Soil loosening assembly, soil removal system and soil removal device

Abstract

The present disclosure relates to a soil breaking assembly, a soil removal system and a soil removal device, wherein the soil breaking assembly is used to break and move soil in a direction close to a central axis by rotation, the soil breaking assembly comprises: a cutter head (1) in the shape of a ring; a plurality of breaking plates (2) arranged in a ring shape in the circumferential direction on the cutter head (1), the breaking plates (2) extend in a direction close to the central axis from a breaking plate first end (203) close to the cutter head (1) to a breaking plate second end (204) away from the cutter head (1), the length of the breaking plate first end (203) is greater than the length of the breaking plate second end (204), and the inner edges (201) of the plurality of breaking plates (2) form an accommodation cavity (20); and a plurality of cutter teeth (3) arranged on the outer edges (202) of the breaking plates (2), and the plurality of cutter teeth (3) are arranged in the length direction of the breaking plates (2).

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of emergency rescue equipment, and in particular to a soil loosening assembly, a soil removal system and a soil removal device. BACKGROUND

[0002] When geological disasters such as earthquakes and mudslides occur, rainfall and underground water often occur, and the soil is prone to hardening during on-site rescue, increasing the difficulty of rescue.

[0003] At present, the conventional rescue method mainly uses conventional engineering machinery such as excavators and loaders to clean up the periphery, and when approaching the buried person, uses a hand shovel or a spade to loosen the hardened soil for excavation and rescue. Hardened soil can cause suction removal operation to fail, and how to effectively loosen and remove the soil is a technical problem that needs to be solved to improve rescue efficiency. SUMMARY

[0004] Embodiments of the present disclosure provide a soil loosening assembly, a soil removal system and a soil removal device, which can improve the loosening efficiency and transfer efficiency of the soil.

[0005] According to a first aspect of the present disclosure, a soil loosening assembly is provided for loosening soil by rotation and moving the soil in a direction close to a central axis, the soil loosening assembly comprising:

[0006] a cutter head in the shape of a ring;

[0007] a plurality of loosening plates circumferentially arranged on the cutter head, the loosening plates extending in a direction close to the central axis from a first end of the loosening plate close to the cutter head to a second end of the loosening plate away from the cutter head, the length of the first end of the loosening plate being greater than the length of the second end of the loosening plate, and the inner edges of the plurality of loosening plates forming a containing cavity; and

[0008] a plurality of cutter teeth arranged on the outer edges of the loosening plates, the plurality of cutter teeth being arranged in the length direction of the loosening plates.

[0009] In some embodiments, the first end of the loosening plate is inclinedly connected to the cutter head.

[0010] In some embodiments, the loosening plate comprises a base body connected to the cutter head,

[0011] the cutter teeth, the base body and the cutter head are in an integrated structure; and / or

[0012] a support framework is arranged in the base body.

[0013] In some embodiments, the soil loosening assembly further comprises:

[0014] a deformation sensing assembly arranged on the base body, the deformation sensing assembly being configured to send a signal when deformation of the base body is detected; and

[0015] a controller configured to stop the soil loosening assembly from rotating in the event of receiving the signal.

[0016] In some embodiments, the deformation sensing assembly includes four strain gauges in a full-bridge configuration.

[0017] In some embodiments, the loosening plate further comprises an elastic wrapping portion wrapped outside the base body, and the deformation sensing assembly is located between the base body and the elastic wrapping portion.

[0018] In some embodiments, the line type of the outer edge and / or the inner edge of the loosening plate is a three-dimensional space cosine curve.

[0019] In some embodiments,

[0020] The line type function of the outer edge is x=a1*sin(t*360)-b1, y=c1*cos(t*360)+d1, z=e1*sin(t*360); and / or

[0021] The line type function of the inner edge is x=a2*sin(t*360)-b2, y=c2*cos(t*360)+d2, z=e2*sin(t*360);

[0022] Wherein, a1>a2, b1<b2, c1>c2, d1>d2, e1≥e2, x, y, z are spatial positions, and t is a time variable starting from a reference point.

[0023] In some embodiments,

[0024] For the line type function of the outer edge, a1=20-30, b1=20-30, c1=80-90, d1=20-30, e1=120-130; and / or

[0025] For the line type function of the inner edge, a2=20-30, b2=40-60, c2=50-70, d2=10-20, e2=110-130.

[0026] In some embodiments, when the central axis extends in the vertical direction, the included angle between the cutting edge of the cutter tooth and the horizontal plane is 50-70°.

[0027] According to a second aspect of the present disclosure, a soil removal system is provided, comprising:

[0028] a first suction pipeline, a negative pressure suction port being arranged at a first end of the first suction pipeline; and

[0029] The soil loosening assembly of the above embodiments, the cutter head is connected to the first end of the first suction pipeline, and the negative pressure suction port is communicated with the accommodating cavity.

[0030] In some embodiments, the soil removal system further comprises:

[0031] a driving mechanism comprising a driving component and a speed reduction assembly connected between an output end of the driving component and the second end of the first suction pipeline, the driving mechanism being configured to drive the first suction pipeline to rotate; and

[0032] a second suction pipeline connected between the negative pressure source and the second end of the first suction pipeline.

[0033] In some embodiments, the soil loosening plate comprises a base connected to the cutter head, and the soil loosening assembly further comprises:

[0034] a deformation sensing assembly arranged on the base and configured to send a signal when deformation of the base is detected; and

[0035] a controller arranged on the first suction pipeline, the controller being configured to stop the driving mechanism when the signal is received.

[0036] According to a third aspect of the present disclosure, a soil removal device is provided, comprising the soil loosening assembly of the above embodiments, or the soil removal system of the above embodiments.

[0037] In some embodiments, the soil removal device comprises a soil suction vehicle, a suction machine or a soil removal experiment table.

[0038] Based on the above technical solutions, the soil loosening assembly of the embodiments of the present disclosure has a simple and reliable structure. During the rotation of the soil loosening assembly around the central axis, the cutter teeth cut the soil, and the soil loosening plate cooperates with the plurality of cutter teeth. The outer edge of the soil loosening plate wraps the cut soil, which can improve the soil loosening effect and efficiency. The soil loosening plate pushes the soil towards the accommodating cavity during rotation, and the inner edge of the soil loosening plate transports the soil towards the central axis, so that the soil moves and accumulates towards the center of rotation, improves the density of the soil in the accommodating cavity, facilitates the transfer of the soil in the accommodating cavity by the suction device, and further improves the transfer efficiency of the soil. By simultaneously improving the soil loosening efficiency and the transfer efficiency, not only can the hardened soil be effectively loosened, but also the soil can be quickly transported to the center of rotation, which facilitates subsequent collection and processing, greatly improves the removal efficiency of the hardened soil, and improves the rescue efficiency of the buried personnel. BRIEF DESCRIPTION OF DRAWINGS

[0039] The accompanying drawings, which are included to provide a further understanding of the present disclosure and constitute a part of this application, illustrate certain illustrative embodiments of the present disclosure and are used to explain the present disclosure, but do not limit the present disclosure. In the drawings:

[0040] Figure 1 is a structural schematic diagram of some embodiments of the soil loosening assembly of the present disclosure.

[0041] Figure 2 Structural schematic diagram of another embodiment of the soil loosening assembly of the present disclosure.

[0042] Figure 3 Structural schematic diagram of some embodiments of the deformation sensing assembly of the soil loosening assembly of the present disclosure.

[0043] Figure 4 Structural schematic diagram of some embodiments of the soil loosening assembly acting on the cut surface of the present disclosure.

[0044] Figure 5 Structural schematic diagram of some embodiments of the angle between the cutter tooth and the cut surface of the soil loosening assembly of the present disclosure.

[0045] Figure 6 Structural schematic diagram of some embodiments of the soil loosening system of the present disclosure.

[0046] Legend of reference signs

[0047] 1, cutter head; 2, loosening plate; 3, cutter tooth; 4, deformation sensing assembly; 5, first suction pipeline; 6, driving mechanism; 7, second suction pipeline; 8, controller; 61, driving component; 62, speed reduction assembly; 10, horizontal plane; 20, accommodating cavity; 21, base body; 22, elastic wrapping part; 201, inner edge; 202, outer edge; 203, first end of loosening plate; 204, second end of loosening plate; 30, cutting edge; 40, strain gauge; 50, negative pressure suction port. DETAILED DESCRIPTION

[0048] Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. The description of the exemplary embodiments is merely illustrative in nature and is in no way intended to limit the disclosure, its application or uses. The disclosure can be implemented in numerous different forms, not limited to the embodiments described herein. These embodiments are provided so that this disclosure will be thorough and complete, and fully convey the scope of the disclosure to those skilled in the art. It should be noted that: unless otherwise specifically stated, the relative arrangement of components and steps set forth in these embodiments, the composition of materials, numerical expressions, and numerical values should be interpreted as merely exemplary, rather than as a limitation.

[0049] The "first", "second", and similar words used in the present disclosure do not represent any order, number, or importance, but are only used to distinguish different parts. "Include" or "contain" and similar words mean that the elements before the word cover the elements listed after the word, and do not exclude the possibility of also covering other elements. "Up", "down", "left", "right", and the like are only used to represent relative positional relationships, and when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0050] In the present disclosure, when it is described that a specific device is located between a first device and a second device, there can be or can not be an intervening device between the specific device and the first device or the second device. When it is described that a specific device is connected to another device, the specific device can be directly connected to the other device without an intervening device, or can not be directly connected to the other device with an intervening device.

[0051] All the terms used in the present disclosure, including technical terms or scientific terms, have the same meanings as understood by those skilled in the art to which the present disclosure belongs, unless otherwise specifically defined. It should also be understood that the terms defined in general dictionaries should be interpreted in the meanings consistent with the meanings in the context of related technology, and should not be interpreted in idealized or excessively formalized meanings, unless otherwise explicitly defined herein.

[0052] Techniques, methods, and devices known to those of ordinary skill in the relevant art can not be discussed in detail, but should be considered part of the specification where appropriate.

[0053] Based on the above embodiments of the present disclosure, the technical features of one embodiment can be beneficially combined with one or more other embodiments without explicit denial or conflict.

[0054] The inventors found in the research process that geological disasters such as debris flow and earthquake often occur with rain and other rain weather, and soil hardening often occurs during rescue and relief, making the soil hard and difficult to break and remove, and often requiring the use of tools or equipment to break the hardened soil before removing and cleaning. However, conventional wheeled engineering vehicles are also difficult to approach the rescue site, and currently basically use hand-digging and pick-paring methods for rescue, which seriously affects the rescue efficiency, and close-range operation can easily endanger rescue personnel. Conventional engineering machinery has high operation efficiency, but is easy to cause secondary injury to the buried person; and manual tool or manual cleaning has the problems of high labor intensity, high risk, and low operation efficiency. However, the application of large vehicle-mounted excavating and suction vehicles to buried object personnel rescue also has the problem that the removal operation cannot be smoothly performed due to the hardening of the buried object.

[0055] To improve the soil breaking efficiency and transfer efficiency, first, the present disclosure provides a soil breaking assembly, as shown in Figures 1 to 5 The soil breaking assembly, for breaking soil by rotation and moving the soil in the direction close to the central axis, comprises:

[0056] The cutter head 1 is annular;

[0057] A plurality of breaking plates 2 are circumferentially arranged on the cutter head 1, and the breaking plates 2 extend towards the center axis from the first end 203 of the breaking plate close to the cutter head 1 to the second end 204 of the breaking plate away from the cutter head 1, the length of the first end 203 of the breaking plate is greater than the length of the second end 204 of the breaking plate, and the inner edges 201 of the plurality of breaking plates 2 form a containing cavity 20.

[0058] A plurality of cutter teeth 3 are arranged on the outer edges 202 of the breaking plates 2, and the plurality of cutter teeth 3 are arranged along the length direction of the breaking plates 2.

[0059] Specifically, the soil breaking assembly of the present disclosure is particularly suitable for soil with a hardened surface, which can be, for example, surface soil, river and sea mud, etc. Specifically, the breaking plates 2 are circumferentially arranged on the side of the cutter head 1 close to the soil, and the center axis is perpendicular to the disc surface of the cutter head 1, and a plurality of cutter teeth 3 are arranged on each breaking plate 2, which can improve the breaking effect and efficiency. Specifically, the plurality of cutter teeth 3 are arranged at a certain angle along the breaking plate 2.

[0060] Specifically, the cutter teeth 3 are responsible for cutting the hardened surface, and cooperate with the inclined arrangement and rotating movement of the breaking plates 2 to achieve the breaking and conveying of the soil. The cutter head 1 can be connected to the suction pipe wall of the suction device, for example, so that the suction port is aligned with the hollow part on the inner side of the cutter head 1, and the soil in the containing cavity 20 is timely transferred.

[0061] Specifically, the first end 203 of the breaking plate is away from the center axis relative to the second end 204 of the breaking plate, that is, the breaking plate 2 is inclined from the first end to the second end towards the center axis, so that the containing cavity 20 gradually narrows from the end close to the cutter head 1 to the end away from the cutter head 1, and the arrangement of the containing cavity 20 helps to reserve enough space for the broken soil, and prepares for suction removal, etc. The inclined arrangement of the breaking plate 2 can also ensure that the cutter teeth 3 form a better angle when contacting the soil, so as to more effectively cut into the soil, reduce cutting resistance, and improve the breaking efficiency.

[0062] Optionally, the breaking plate 2 can also be referred to as a breaking fin. Optionally, the plurality of breaking plates 2 can be arranged at equal intervals in the circumferential direction, or can be arranged at any interval, or can be arranged adjacently.

[0063] Optionally, the cutter head 1 can be made of carbon steel material, the breaking plate 2 can be made of elastic-plastic material, and the cutter tooth 3 can be made of elastic-plastic material, for example, the surface of the breaking plate 2 can be made of polytetrafluoroethylene material, so that the broken soil is not easy to adhere to the breaking plate 2, and at the same time, it will not cause secondary damage to the buried personnel. Optionally, the cutter tooth 3 can be a linear cutting tooth, or a point cutting tooth.

[0064] The soil breaking assembly of the embodiment is simple and reliable in structure. During rotation of the soil breaking assembly around the central axis, the cutting teeth 3 cut the soil, the soil breaking plate 2 cooperates with the cutting teeth 3, and the outer edge 202 of the soil breaking plate 2 wraps the cut soil, so that the soil breaking effect and the soil breaking efficiency are improved. During rotation, the soil breaking plate 2 pushes the soil into the accommodating cavity 20, the inner edge 201 of the soil breaking plate 2 transports the soil to the direction close to the central axis, so that the soil moves to the rotation center and is accumulated, the soil density in the accommodating cavity 20 is improved, the soil in the accommodating cavity 20 is conveniently transferred by the suction device, and the soil transfer efficiency is improved. By simultaneously improving the soil breaking efficiency and the soil transfer efficiency, the hard soil can be effectively broken, and the soil can be quickly transported to the rotation center, so that the soil is conveniently collected and processed, the hard soil removal efficiency is greatly improved, and the rescue efficiency of the buried person is improved.

[0065] In some embodiments, as shown in Figures 1 to 4 the first end 203 of the soil breaking plate is inclinedly connected to the cutter head 1.

[0066] Specifically, the first end 203 of the soil breaking plate is inclinedly connected to the cutter head 1, that is, the first end 203 of the soil breaking plate is located between the radial direction and the tangential direction of the circular ring, and correspondingly, the surface of the soil breaking plate 2 is also an inclined surface, that is, the surface of the soil breaking plate 2 is located between the radial direction and the tangential direction.

[0067] By inclining the first end 203 of the soil breaking plate to the cutter head 1, the broken soil can be transported along the inclined surface of the soil breaking plate to the center, the transverse movement of the soil is reduced, the smoothness and efficiency of the soil transportation are improved, the load is dispersed, and the structural stability and durability of the entire soil breaking assembly are improved. The inclined surface design can make the entire soil breaking plate 2 push the soil into the accommodating cavity 20 during rotation, effectively complete the internal rotation of the broken soil, reduce the risk of soil jamming, and reduce the safety hazard caused by soil jamming.

[0068] In some embodiments, as shown in Figure 2 and Figure 3 the soil breaking plate 2 comprises a base body 21, the base body 21 is connected to the cutter head 1,

[0069] the cutting tooth 3, the base body 21 and the cutter head 1 are of an integrated structure; and / or

[0070] the base body 21 is provided with a support framework.

[0071] Specifically, the base body 21 can be made of carbon steel, the base body 21 and the cutter head 1 are of an integrated structure, and the base body 21 provides support for the overall curved form of the soil breaking plate 2. Alternatively, the materials of the cutting tooth 3, the base body 21 and the cutter head 1 can be the same or different, for example, when the materials are different, a double-color injection molding process or the like can be used for integrated formation.

[0072] The embodiment can improve the stability and structural strength of the soil loosening assembly, and further improve the soil loosening efficiency of the soil loosening assembly and prolong the service life of the soil loosening assembly by means of the integrated structure and / or the support framework arranged in the base body 21.

[0073] In some embodiments, as shown in Figure 3 The soil loosening assembly further comprises:

[0074] The deformation sensing assembly 4 is arranged on the base body 21, and the deformation sensing assembly 4 is configured to send a signal when the deformation of the base body 21 is detected; and

[0075] The controller 8 is configured to stop the rotation of the soil loosening assembly when the signal is received.

[0076] Specifically, when the soil loosening assembly contacts the rescued person, the base body 21 of the loosening plate 2 is slightly deformed due to the increase of the load, and the controller 8 stops the rotation of the soil loosening assembly, which can effectively avoid causing secondary injury to the rescued person. Optionally, the controller 8 can include a wireless transmission device and the like.

[0077] The embodiment can monitor the deformation of the base body 21 by means of the deformation sensing assembly 4, can feed back the load deformation of the loosening plate 2 in real time, and can stop the rotation or feeding of the soil loosening assembly when the deformation of the base body 21 occurs, which can effectively avoid causing secondary injury to the rescued person and improve the use safety of the soil loosening assembly.

[0078] In some embodiments, as shown in Figure 3 The deformation sensing assembly 4 includes four strain gauges 40 in a full-bridge structure.

[0079] Specifically, the full-bridge structure is based on the working principle of Wheatstone bridge. When the strain gauge is subjected to external force, the resistance of the strain gauge will change, which will cause the change of the output voltage of the bridge. By measuring the change of the output voltage, the strain experienced by the strain gauge can be calculated.

[0080] Specifically, the four strain gauges 40 are connected in a closed loop in a two-by-two opposite manner, that is, two strain gauges are connected together as the diagonal lines of the bridge, and the other two are connected as another set of diagonal lines. When the strain gauges are subjected to force, the resistance of the strain gauges changes, causing the bridge to be unbalanced and thus generating a voltage difference.

[0081] The embodiment uses four strain gauges 40 in a full-bridge structure, which has higher sensitivity and accuracy than deformation sensing assemblies 4 in single-arm or half-bridge structures, and can more accurately detect slight deformation, thereby improving the use safety of the soil loosening assembly.

[0082] In some embodiments, as shown in FIG. 1, the soil loosening assembly 1 comprises a loosening plate 2 and a plurality of cutting teeth 3. Figure 2 As shown in FIG. 2, the loosening plate 2 further comprises an elastic wrapping portion 22, which is wrapped outside the base body 21, and the deformation sensing assembly 4 is located between the base body 21 and the elastic wrapping portion 22.

[0083] Specifically, the elastic wrapping portion 22 can be made of an elastic material with certain wear resistance and strength, such as polytetrafluoroethylene, etc. Specifically, by driving the cutting teeth 3 to cut the soil through the elastically compressible loosening plate 2, the cutting teeth 3 can exert appropriate cutting force on the soil during cutting. When the soil loosening assembly contacts the rescued person, the elastic wrapping portion 22 of the loosening plate 2 can drive the cutting teeth 3 to rebound, thereby causing the base body 21 to deform slightly.

[0084] The loosening plate 2 of this embodiment comprises the elastic wrapping portion 22, which can make the soil loosening assembly have both strength and elasticity, prolong the service life of the soil loosening assembly, provide additional protection, and further reduce the possibility of causing secondary injury to the buried person. In addition, the elastic wrapping portion 22 can reduce the direct impact of hard objects on the loosening plate 2, and protect the base body 21 from being damaged.

[0085] In some embodiments, as shown in FIG. 1, the soil loosening assembly 1 comprises a loosening plate 2 and a plurality of cutting teeth 3. Figures 1 to 4 As shown in FIG. 2, the outer edge 202 and / or the inner edge 201 of the loosening plate 2 has a three-dimensional space cosine curve line type.

[0086] Specifically, by setting the line type of the outer edge 202 and the inner edge 201 as a three-dimensional space cosine curve, the diameter of the first end 203 of the loosening plate is greater than the diameter of the second end 204 of the loosening plate, and the length of the first end 203 of the loosening plate is greater than the length of the second end 204 of the loosening plate. The outer edge 202 and the inner edge 201 are arranged along the cosine curve, the cutting teeth 3 break up the hard soil, the outer edge 202 pushes the loosened hard soil into the accommodating cavity 20, and the inner edge 201 effectively rotates the hard soil into the accommodating cavity 20 and prevents the hard soil from being scattered outside the accommodating cavity 20.

[0087] By setting the line type of the outer edge 202 and / or the inner edge 201 of the loosening plate 2 as a three-dimensional space cosine curve, this embodiment can increase the contact area between the loosening plate 2 and the soil, which helps to better break up the soil and improve the loosening efficiency. In addition, the loosening plate 2 can guide the soil to be transported along the center axis direction, reduce the residue of the soil on the loosening plate, and improve the smoothness of the soil transportation. Furthermore, the loosening plate 2 can increase the overall rigidity, improve the structural stability of the soil loosening assembly, and also can disperse the load, reduce the local stress concentration, and improve the bending resistance of the loosening plate 2.

[0088] In some embodiments, as shown in FIG. 1, the soil loosening assembly 1 comprises a loosening plate 2 and a plurality of cutting teeth 3.

[0089] The linear function of the outer edge 202 is x=a1*sin(t*360)-b1, y=c1*cos(t*360)+d1, and z=e1*sin(t*360); and / or

[0090] The linear function of the inner edge 201 is x=a2*sin(t*360)-b2, y=c2*cos(t*360)+d2, and z=e2*sin(t*360).

[0091] Wherein, a1>a2, b1<b2, c1>c2, d1>d2, e1>=e2, x, y, z are spatial positions, and t is a time variable from a reference point.

[0092] Specifically, a1>a2 indicates that the amplitude of the outer edge 202 in the x-axis direction is greater than that of the inner edge 201, b1<b2 indicates that the position offset of the outer edge 202 in the x-axis direction is less than that of the inner edge 201, c1>c2 indicates that the amplitude of the outer edge 202 in the y-axis direction is greater than that of the inner edge 201, d1>d2 indicates that the position offset of the outer edge 202 in the y-axis direction is greater than that of the inner edge 201, and e1>=e2 indicates that the amplitude of the outer edge 202 in the z-axis direction is greater than or equal to that of the inner edge 201. Optionally, a1-a2=3; b1-b2=-22; c1-c2=29; d1-d2=10; and e1-e2=0-2.

[0093] This embodiment can obtain the specific spatial positions of the outer edge 202 and the inner edge 201 according to the time variable t from the reference point by setting the linear function of the outer edge 202 and / or the inner edge 201, thereby realizing many advantages of the linear function being a three-dimensional spatial cosine curve, such as improving the breaking efficiency, improving the smoothness of soil transportation, increasing the overall rigidity of the breaking plate 2, and improving the bending resistance of the breaking plate 2.

[0094] In some embodiments,

[0095] For the linear function of the outer edge 202, a1=20-30, b1=20-30, c1=80-90, d1=20-30, and e1=120-130; and / or

[0096] For the linear function of the inner edge 201, a2=20-30, b2=40-60, c2=50-70, d2=10-20, and e2=110-130.

[0097] This embodiment can obtain the specific spatial positions of the outer edge 202 and the inner edge 201 according to the time variable t from the reference point by setting the specific parameter range of the linear function of the outer edge 202 and / or the inner edge 201, thereby realizing many advantages of the linear function being a three-dimensional spatial cosine curve, such as improving the breaking efficiency, improving the smoothness of soil transportation, increasing the overall rigidity of the breaking plate 2, and improving the bending resistance of the breaking plate 2.

[0098] In some embodiments, as shown in Figure 4 and Figure 5 In the case where the central axis extends in the vertical direction, the included angle between the cutting edge 30 of the cutter tooth 3 and the horizontal plane 10 is 50°-70°.

[0099] Specifically, the horizontal plane 10 is the horizontal cutting surface. Alternatively, in the case where the central axis extends in other directions, the cutting surface can also be other angles perpendicular to the central axis.

[0100] This embodiment can ensure that the cutter tooth 3 forms an optimal cutting angle when breaking the soil, thereby improving the breaking efficiency, by setting the included angle between the cutting edge 30 of the cutter tooth 3 and the horizontal plane 10 to 50°-70°. The appropriate cutting angle can disperse the load and improve the overall structural stability and durability of the soil breaking assembly.

[0101] The inventors have also found in the research process that some prior art cannot throw the soil and sand back to the center of rotation, and the operation efficiency is significantly reduced; some prior art cannot adapt to the use of excavation and suction at the same time, and the rescue efficiency of the buried person is reduced; some prior art requires close operation of the operator, and the broken and consolidated soil is easy to scatter, and multiple movements of the suction port are required to complete the suction operation, which is low in operation efficiency.

[0102] To solve at least one of the above problems, the present disclosure also proposes a soil removal system, as shown in Figure 6 comprising:

[0103] a first suction pipeline 5, the first end of which is provided with a negative pressure suction port 50; and

[0104] The soil breaking assembly of the above embodiment, the cutter head 1 is connected to the first end of the first suction pipeline 5, and the negative pressure suction port 50 is communicated to the accommodation cavity 20.

[0105] Specifically, the first suction pipeline 5 strips the broken and accumulated soil from the ground surface. Specifically, the cutter head 1 is connected to the pipe wall of the first end of the first suction pipeline 5, the first suction pipeline 5 drives the soil breaking assembly to rotate by rotation, the soil is accumulated in the accommodation cavity 20, and is moved away from the ground surface under the driving of the negative pressure suction port, and then is transferred through the first suction pipeline 5. Alternatively, the cutter head 1 of the soil breaking assembly is hinged to the first suction pipeline 5.

[0106] The soil removal system of the embodiment has a high soil loosening effect and efficiency of the soil loosening assembly, and the soil loosening assembly makes the soil move to the center of rotation and accumulate during rotation, thereby increasing the density of the soil in the accommodating cavity 20, facilitating the first suction pipeline 5 to suction and transfer the soil in the accommodating cavity 20, and further improving the removal efficiency of the soil. By simultaneously improving the loosening efficiency and transfer efficiency of the hardened soil, and synchronously operating the crushing, suction, and transfer of the hardened soil, the rapid removal of the hardened soil during rescue and rescue can be realized, the removal efficiency of the hardened soil is improved, the secondary injury to the buried person during rescue is reduced, and the rescue efficiency of the buried person is improved.

[0107] In some embodiments, as shown in Figure 6 The soil removal system further comprises:

[0108] The driving mechanism 6 comprises a driving component 61 and a speed reduction assembly 62, the speed reduction assembly 62 is connected between the output end of the driving component 61 and the second end of the first suction pipeline 5, and the driving mechanism 6 is configured to drive the first suction pipeline 5 to rotate; and

[0109] The second suction pipeline 7 is connected between the negative pressure source and the second end of the first suction pipeline 5.

[0110] Specifically, the driving mechanism 6 can provide rotary driving force, and the negative pressure source is the transfer destination of the soil. Specifically, the speed reduction assembly 62 is connected between the output end of the driving component 61 and the second end of the first suction pipeline 5, which can reduce the rotating speed of the driving component 61 and ensure that the first suction pipeline 5 and the soil loosening assembly rotate at a suitable rotating speed.

[0111] The driving mechanism 6 of the embodiment cooperates with the second suction pipeline 7 to improve the conveying efficiency of the soil, and the second suction pipeline 7 can convey the soil from the second end of the first suction pipeline 5 away from the cutting surface to a designated position, thereby improving the soil removal efficiency.

[0112] In some embodiments, as shown in Figure 3 and Figure 6 The loosening plate 2 comprises a base body 21 connected to the cutter head 1, and the soil loosening assembly further comprises:

[0113] The deformation sensing assembly 4 is arranged on the base body 21 and is configured to send a signal when the base body 21 is deformed; and

[0114] The controller 8 is arranged on the first suction pipeline 5, and the controller 8 is configured to stop the driving mechanism 6 when the signal is received.

[0115] Specifically, when the soil loosening assembly contacts the rescued person, the base 21 of the loosening plate 2 is slightly deformed due to the increased load, the controller 8 provided in the first suction pipeline 5 receives the signal sent by the deformation sensing assembly 4, the controller 8 stops the driving part 61 of the driving mechanism 6, and the soil loosening assembly stops rotating or feeding, so that secondary injury to the rescued person can be effectively avoided.

[0116] Optionally, the controller 8 can include a wireless transmission device, etc. Optionally, the driving part 61 can be an electric motor or a hydraulic motor, etc.

[0117] The embodiment can monitor the deformation of the base 21 through the deformation sensing assembly 4, can feed back the deformation of the loosening plate 2 in real time, and can stop the driving mechanism 6 from rotating in the case of deformation of the base 21, so that secondary injury to the rescued person can be effectively avoided, and the safety of the soil removal system is improved.

[0118] In addition, the present disclosure also provides a soil removal device including the soil loosening assembly of the above embodiment or the soil removal system of the above embodiment.

[0119] The soil removal device of the embodiment has high loosening effect and efficiency on the hardened soil, and the soil loosening assembly can make the soil move to the center of rotation and accumulate during rotation, so that the suction and removal efficiency of the soil is high, the loosening efficiency and transfer efficiency of the soil are simultaneously improved, and the rescue efficiency of the buried person can be improved.

[0120] In some embodiments, the soil removal device includes a soil suction vehicle, a suction machine or a soil removal test bench.

[0121] Optionally, the soil removal device can include a tracked remote control suction vehicle, a mini suction machine or a comprehensive test test bench of water-containing soil removal mechanism, etc.

[0122] The soil loosening assembly, the soil removal system and the soil removal device provided by the present disclosure are described in detail above. The principles and implementation manners of the present disclosure are described by applying specific embodiments, and the above description of the embodiments is only used to help understand the method of the present disclosure and its core idea. It should be noted that, for those skilled in the art, without departing from the principles of the present disclosure, the present disclosure can be improved and modified in several ways, and these improvements and modifications also fall within the protection scope of the claims of the present disclosure.

Claims

1. A soil loosening assembly characterized by, A soil breaking-up assembly for breaking up soil and moving the soil towards a direction close to a central axis by rotation, the soil breaking-up assembly comprising: a cutterhead (1) in the shape of a ring; a plurality of breaking-up plates (2) arranged in a ring shape in a circumferential direction on the cutterhead (1), the breaking-up plates (2) extending towards a direction close to the central axis from a first end (203) of the breaking-up plates close to the cutterhead (1) to a second end (204) of the breaking-up plates away from the cutterhead (1), the first end (203) of the breaking-up plates having a length greater than the length of the second end (204) of the breaking-up plates, inner edges (201) of the plurality of breaking-up plates (2) enclosing a receiving cavity (20), the breaking-up plates (2) comprising a base body (21) connected to the cutterhead (1); a plurality of cutter teeth (3) arranged on outer edges (202) of the breaking-up plates (2), the plurality of cutter teeth (3) being arranged in a length direction of the breaking-up plates (2); a deformation sensing assembly (4) arranged on the base body (21), the deformation sensing assembly (4) being configured to send a signal when deformation of the base body (21) is detected; and a controller (8) configured to stop the soil breaking-up assembly from rotating when the signal is received; wherein a line type of the outer edges (202) and / or the inner edges (201) of the breaking-up plates (2) is a three-dimensional space cosine curve, a line type function of the outer edges (202) is x=a1*sin(t*360)-b1, y=c1*cos(t*360)+d1, z=e1*sin(t*360); and / or a line type function of the inner edges (201) is x=a2*sin(t*360)-b2, y=c2*cos(t*360)+d2, z=e2*sin(t*360); wherein a1>a2, b1<b2, c1>c2, d1>d2, e1≥e2, x, y, z are spatial positions, and t is a time variable starting from a reference point.

2. The soil loosening assembly of claim 1, wherein, The first end (203) of the breaking-up plates is obliquely connected to the cutterhead (1).

3. The soil breaking-up assembly according to claim 1, wherein the cutter teeth (3), the base body (21) and the cutterhead (1) are in an integrated structure; and / or the base body (21) is internally provided with a support framework.

4. The soil loosening assembly of claim 1, wherein, The deformation sensing assembly (4) comprises four strain gauges (40) in a full-bridge structure.

5. The soil loosening assembly of claim 1, wherein, The breaking-up plates (2) further comprise an elastic wrapping part (22) wrapped outside the base body (21), and the deformation sensing assembly (4) is located between the base body (21) and the elastic wrapping part (22).

6. The soil breaking-up assembly according to claim 1, wherein for the line type function of the outer edges (202), a1=20-30, b1=20-30, c1=80-90, d1=20-30, and e1=120-130; and / or For the linear function of the inner edge (201), a2=20~30, b2=40~60, c2=50~70, d2=10~20, e2=110~130.

7. A soil loosening assembly according to any one of claims 1 to 5, wherein, In the case where the central axis extends in the vertical direction, the included angle between the cutting edge (30) of the blade tooth (3) and the horizontal plane (10) is 50°~70°.

8. A soil removal system characterized by, The soil breaking and loosening assembly according to any one of claims 1-7, wherein the cutter head (1) is connected to the first end of the first suction pipeline (5), and the negative pressure suction port (50) is communicated with the accommodating cavity (20). The soil breaking and loosening assembly according to any one of claims 1-7, further comprising: a driving mechanism (6) comprising a driving component (61) and a speed reduction assembly (62), the speed reduction assembly (62) being connected between the output end of the driving component (61) and the second end of the first suction pipeline (5), and the driving mechanism (6) being configured to drive the first suction pipeline (5) to rotate; and a second suction pipeline (7) being communicated between a negative pressure source and the second end of the first suction pipeline (5).

9. The soil removal system of claim 8, wherein, The controller (8) is arranged on the first suction pipeline (5), and the controller (8) is configured to stop the driving mechanism (6) upon receiving the signal. The soil breaking and loosening assembly according to any one of claims 1-7, or the soil removal system according to any one of claims 8-10. The soil breaking and loosening assembly according to any one of claims 1-7, or the soil removal system according to any one of claims 8-10. The soil breaking and loosening assembly according to any one of claims 1-7, or the soil removal system according to any one of claims 8-10.

10. The soil removal system of claim 9, wherein, ​ 11. An earth removal apparatus, characterized by, ​ 12. The soil removal apparatus of claim 11, wherein, ​

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