Soil sampling equipment for deep foundation pit

Abstract

The utility model relates to deep foundation pit soil taking equipment, and relates to the field of deep foundation pit construction, and the deep foundation pit soil taking equipment comprises a pile casing serving as a fender post, a first conveying mechanism and a second conveying mechanism; wherein the pile casing comprises a discharge port and a plurality of feed ports; the pile casing is vertically arranged, the discharging port is located above the ground, and the multiple feeding ports are located below the ground and arranged at intervals in the vertical direction. The first conveying mechanism is used for conveying earthwork into the pile casing through the feeding port. And the second conveying mechanism is used for conveying the earthwork in the pile casing out of the pile casing through the discharge port. The earthwork in the pile casing is conveyed to the position above the ground through the second conveying mechanism, and the effect of achieving earthwork lifting of the deep foundation pit in an environment-friendly, energy-saving and low-cost mode is achieved.

Description

Technical Field

[0001] The present application relates to the field of deep foundation pit construction, and in particular to a deep foundation pit soil taking device. Background Art

[0002] At present, with the development of urban construction, there is an increasing demand for the development of three-dimensional urban space. Underground space for various purposes has been developed and utilized in large and medium-sized cities around the world, such as multi-story basements of high-rise buildings, subways and underground stations.

[0003] Especially with the rapid development of urban rail transit, deep foundation pit projects in the urban core area are mostly adjacent to the operating subway section tunnels. The deep foundation pit excavation must meet the strict deformation protection requirements of the adjacent subway section tunnels to ensure the safe operation of the subway.

[0004] Existing earth-moving equipment for deep foundation pits includes long-arm excavators, shell bucket telescopic arm excavators, and grab excavators. During the construction process, these equipment have intervals during which soil cannot be taken, and the construction efficiency needs to be further improved. Utility Model Content

[0005] The present application provides a deep foundation pit earth-excavating device, which is environmentally friendly, energy-saving and low-cost in achieving the effect of earth-excavating in a deep foundation pit.

[0006] The present application provides a deep foundation pit earth-excavation equipment, comprising a casing, a first conveying mechanism and a second conveying mechanism; wherein the casing comprises a discharge port and a plurality of feed ports; the casing is placed vertically, the discharge port is located above the ground, the plurality of feed ports are located below the ground and are arranged at intervals along the vertical direction; the first conveying mechanism is used to deliver earth into the casing through the feed port; the second conveying mechanism is used to deliver earth in the casing out of the casing through the discharge port.

[0007] In the above technical solution, multiple feed ports are arranged at different heights of the casing. As the foundation pit is excavated from top to bottom, the height of the first conveying mechanism gradually decreases, and the first conveying mechanism is respectively connected to the feed ports at corresponding heights. The first conveying mechanism delivers the earth into the casing through the feed ports at corresponding heights.

[0008] Compared with setting only one feed inlet, the setting of multiple feed inlets can reduce the height of earth that needs to be lifted in the middle process of excavating the foundation pit downward, thereby improving efficiency and reducing energy consumption.

[0009] Due to the setting of the casing, the earth is located in a relatively closed space during the lifting process. It is not easy to generate dust when the earth is lifted to affect the on-site environment, which is helpful for environmental protection.

[0010] Using this device also has the effect of silent noise reduction.

[0011] As an optional solution, the multiple feed ports include a first feed port and a second feed port, wherein the first feed port is located above the second feed port; the first conveying mechanism can be connected to the first feed port or the second feed port, and the first conveying mechanism is connected to the second feed port when the first feed port is blocked.

[0012] As an optional solution, it also includes a first blocking component for blocking the first material opening, and the first blocking component is detachably fixedly connected to the casing.

[0013] As an optional solution, the first plugging assembly includes an inner plate, an outer plate and a fastening assembly; wherein the inner plate is an arc-shaped plate that contacts the inner wall of the casing and covers the first material port; the outer plate contacts the outer wall of the casing; and the fastening assembly presses the inner plate and the outer plate against the casing.

[0014] As an optional solution, the fastening assembly includes a screw and a nut; wherein, one end of the screw is fixedly connected to the inner plate, and the other end passes through the first material opening; a connecting hole is opened on the outer plate to avoid the screw; the nut is threadedly connected to one end of the screw passing through the connecting hole to press the inner plate and the outer plate against the casing.

[0015] As an optional solution, an annular sleeve is fixed on the outer plate, the outer peripheral surface of the annular sleeve is in contact with the side surface of the first material port, and a grouting port is provided above the side wall of the annular sleeve.

[0016] As an optional solution, the multiple feed ports also include a third feed port and a second sealing component; wherein the third feed port is located below the second feed port; the second sealing component can seal the second feed port; and the first conveying mechanism is connected to the third feed port when the first feed port and the second feed port are sealed.

[0017] As an alternative, the casing comprises a cylinder that can be used in a concrete structure as a maintenance opening.

[0018] As an optional solution, the first feed port and the second feed port are two adjacent feed ports along the vertical direction, and the vertical interval between the first feed port and the second feed port is 4-6 meters; and / or the vertical height of the casing is 25-50 meters; and / or the diameter of the casing is 0.8-1.2 meters.

[0019] As an optional solution, a third conveying mechanism is further included, which is arranged on the ground and is used to move the earth sent out from the discharge port. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic diagram of the overall structure of an embodiment;

[0021] Figure 2 The diagram is a schematic diagram of the structure in which the first plugging component plugs the first material port in an embodiment;

[0022] Figure 3 is a schematic diagram of a structure in which a filler is arranged in the first material port in an embodiment;

[0023] Figure 4 is a schematic diagram of the structure of an outer plate and an annular sleeve in an embodiment;

[0024] Figure 5 The present invention is a schematic diagram of the structure in which the first conveying mechanism is connected with the third material port in an embodiment.

[0025] 1. First conveying mechanism; 2. Second conveying mechanism; 3. Casing; 31. Feed inlet; 311. First feed inlet; 312. Second feed inlet; 313. Third feed inlet; 32. Discharge outlet; 4. First plugging assembly; 41. Inner plate; 42. Outer plate; 43. Fastening assembly; 431. Screw; 432. Nut; 44. Annular sleeve; 45. Connecting hole; 5. Second plugging assembly. DETAILED DESCRIPTION

[0026] The present application is further described in detail below through the accompanying drawings and embodiments. Through these descriptions, the characteristics and advantages of the present application will become clearer and more specific.

[0027] The word "exemplary" is used exclusively herein to mean "serving as an example, embodiment, or illustration." Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments. Although various aspects of the embodiments are shown in the drawings, the drawings are not necessarily drawn to scale unless otherwise noted.

[0028] In addition, the technical features involved in different embodiments of the present application described below can be combined with each other as long as they do not conflict with each other.

[0029] In the related technology, a foundation pit with an excavation depth of more than 5 meters is called a deep foundation pit. During the construction of the underground space, the excavated earth needs to be lifted above the ground and then transported to the designated location using a dump truck. When the existing technology uses a bucket to lift earth, since the bucket is in an open space, dust is easily generated during the earth lifting process; the bucket equipment is expensive and costly; the process of lifting earth with a bucket is cyclical, i.e. filling the bucket, lifting the bucket, pouring the earth out of the bucket, and lowering the bucket into the foundation pit. The bucket is not continuously lifting the earth, which hinders the improvement of on-site construction efficiency.

[0030] Reference Figures 1 to 5 The embodiment of the present application discloses a deep foundation pit earth-excavating equipment, including a casing 3, a first conveying mechanism 1 and a second conveying mechanism 2.

[0031] The casing 3 includes a discharge port 32 and a plurality of feed ports 31 ; the casing 3 is placed vertically, the discharge port 32 is located above the ground, and the plurality of feed ports 31 are located below the ground and are arranged at intervals along the vertical direction.

[0032] The first conveying mechanism 1 is used to convey the earth into the casing 3 through the feed port 31 ; the second conveying mechanism 2 is used to convey the earth in the casing 3 out of the casing 3 through the discharge port 32 .

[0033] Specifically, the cross section of the casing 3 is determined according to design requirements. For example, the casing 3 is cylindrical; optionally, the casing 3 is square cylindrical. The upper end of the casing 3 is located above the ground, and the lower end of the casing 3 extends below the bottom surface. The casing 3 is placed vertically. For example, the casing 3 can be placed in the vertical direction; optionally, the casing 3 can be placed tilted according to site requirements. Preferably, the tilt angle of the casing 3 is not less than 45°.

[0034] Before excavating the foundation, it is necessary to cast retaining piles at the set location. The number and arrangement of retaining piles are determined according to the design requirements. Retaining piles are piles formed by pouring concrete in prefabricated holes in the soil layer. They can be used to protect the foundation pit and prevent landslides. Retaining piles are composed of concrete and steel bars, which can effectively bear horizontal and vertical loads.

[0035] The casing in this solution is arranged side by side with the retaining piles, and the casing and the other retaining piles are arranged on the same straight line. The casing can also be understood as a cylindrical retaining pile. A feasible way is to pour concrete in the casing after the casing completes the soil taking function so that the casing can be used as a retaining pile. The position of the casing is based on the needs. For example, the casing is arranged between two retaining piles made of reinforced concrete, and the two retaining piles and the casing form a structure of a bite pile.

[0036] In another embodiment, the casing is disposed between two retaining piles made of reinforced concrete, with a spacing between the two retaining piles and the casing to form an intermediate row structure.

[0037] In another embodiment, a certain thickness of concrete may be poured outside the casing so that the casing serves as a cylindrical retaining pile.

[0038] When constructing casing 3, a rotary drilling rig is used to drill a pit with a diameter of 1.2 meters. The depth of the pit is determined according to needs. The steel casing is lowered with a diameter of 1 meter. 20 cm thick concrete is poured around the outer periphery of the steel casing for reinforcement. Two anchor cables are used to reinforce every 4 to 6 meters, and a force-reducing pad is added for reinforcement. An opening is made 1 meter below the 4-meter support point, that is, 5 meters, for the feed port to keep the transmission unobstructed.

[0039] The present application sets a casing 3 as a closed space, and earthwork is lifted inside the casing 3 .

[0040] The casing 3 is provided with a feed port 31 and a discharge port 32. There is one discharge port 32 located above the ground. There are multiple feed ports 31. The multiple feed ports 31 are spaced apart in the vertical direction so that the multiple feed ports 31 are located at different height positions on the side wall of the casing 3.

[0041] In this embodiment, a plurality of discharge ports 32 are arranged at intervals along the vertical direction on the casing 3. In another embodiment, the plurality of discharge ports 32 include two groups of discharge ports, the two groups of discharge ports are arranged at intervals along the circumference of the casing 3, and any one group of discharge ports includes a plurality of discharge ports 32 arranged at intervals along the vertical direction. In this case, two opposite discharge ports 32 can be provided at the same height of the casing 3, which helps to improve the soil extraction efficiency.

[0042] The first conveying mechanism 1 is located below the ground. The first conveying mechanism 1 uses an existing planar conveying method. Exemplarily, the first conveying mechanism 1 is a belt conveying mechanism. The first conveying mechanism 1 moves the earth excavated underground to the feed port 31 of the casing 3, and the earth enters the inner cavity of the casing 3 from the feed port 31.

[0043] The second conveying mechanism 2 is located in the inner cavity of the casing 3 and is used to convey the earth in the casing 3 to the ground and move it out of the inner cavity of the casing 3 from the discharge port 32. Exemplarily, the second conveying mechanism 2 includes a screw conveyor.

[0044] It should be noted that in the drawings, in order to facilitate the display of various features, the first conveying mechanism 1 is schematically placed outside the casing 3. One end of the first conveying mechanism 1 can pass through the feed port 31 as needed, so that the soil can fall from the first conveying mechanism 1 and fall onto the second conveying mechanism 2, and be driven by the second conveying mechanism 2 to move.

[0045] In the accompanying drawings, the driving motor of the second conveying mechanism 2 is arranged above the ground. In another embodiment, the driving motor of the second conveying mechanism 2 is arranged below the ground, located at the bottom end of the casing 3. At this time, the discharge port of the casing can be the upper port of the casing 3.

[0046] Multiple feed ports 31 are arranged at different heights of the casing 3. As the foundation pit is excavated from top to bottom, the height of the first conveying mechanism 1 gradually decreases, and the first conveying mechanism 1 is respectively connected to the feed ports 31 at corresponding heights. The first conveying mechanism 1 delivers the earth into the casing 3 through the feed ports 31 at corresponding heights.

[0047] Compared with only one feed inlet 31 , the provision of multiple feed inlets 31 can relatively reduce the height of earth that needs to be lifted during the downward excavation of the foundation pit, thereby improving efficiency and reducing energy consumption.

[0048] In this embodiment, due to the provision of the casing 3, the earth is located in a relatively closed space during the lifting process, and dust is not easily generated when the earth is lifted to affect the on-site environment, which is helpful for environmental protection.

[0049] Since earthwork can continuously enter the casing 3 and be lifted inside the casing 3, the earthwork can be lifted continuously, which helps to improve construction efficiency.

[0050] Compared with equipment using a bucket, the use of this device can reduce costs.

[0051] Since the earthwork is lifted in the casing 3, the safety of the construction process is improved compared to the use of the bucket.

[0052] Reference Figure 1 As an optional solution, the first feed port 311 and the second feed port 312 are two feed ports 31 adjacent to each other in the vertical direction, and the first feed port 311 and the second feed port 312 are spaced 4-6 meters apart in the vertical direction;

[0053] Specifically, the vertical interval between the first material opening 311 and the second material opening 312 is determined according to design requirements. For example, the vertical interval between the first material opening 311 and the second material opening 312 is 5 meters; optionally, the vertical interval between the first material opening 311 and the second material opening 312 is 4 meters or 6 meters.

[0054] Since the steel supports are generally 4 meters apart, the first material opening 311 and the second material opening 312 are vertically spaced within this range, which can facilitate construction and facilitate maintaining the structural strength of the casing 3.

[0055] Reference Figure 1 As an optional solution, the vertical height of the casing 3 is 25-50 meters. The diameter of the casing 3 is 0.8-1.2 meters.

[0056] Specifically, the vertical height of the casing 3 is determined according to design requirements. Exemplarily, the height of the casing 3 is 30 meters; optionally, the height of the casing 3 is 25 meters, 35 meters, 38 meters, 45 meters or 50 meters.

[0057] The diameter of the casing 3 is determined according to design requirements. For example, the diameter of the casing 3 is 1 meter; optional diameters are 0.8 meters, 0.9 meters, 1.1 meters or 1.2 meters.

[0058] Reference Figure 1 As an optional solution, the casing 3 includes a concrete cylinder that can be used as a maintenance port.

[0059] Specifically, the specifications of the casing 3 are designed according to the standards of the retaining piles, so that the casing 3 can be used as a maintenance port in the later stage. The maintenance port is used for inspection, overhaul and daily maintenance by future staff. The concrete cylinder serving as the maintenance port improves the use efficiency of the casing 3 and reduces the project cost.

[0060] In another embodiment, the body of the casing 3 is used as a part of the maintenance opening. After the earthwork is lifted, concrete is poured so that the casing 3 meets the design requirements of the retaining piles and serves as a maintenance opening in the later stage.

[0061] In another embodiment, the casing 3 is pulled out and reused.

[0062] In another embodiment, the casing 3 may be a steel pipe.

[0063] Reference Figure 1 As an optional solution, the multiple feed ports 31 include a first feed port 311 and a second feed port 312 , and the first feed port 311 is located above the second feed port 312 .

[0064] The first conveying mechanism 1 can be connected to the first material port 311 or the second material port 312 , and the first conveying mechanism 1 is connected to the second material port 312 when the first material port 311 is blocked.

[0065] Specifically, during the construction process, after the earthwork corresponding to the height of the first material port 311 is lifted, the first conveying mechanism 1 is connected to the second material port 312, and the first material port 311 is sealed. The sealing method can be achieved by winding a steel belt or using the first sealing component 4 described later.

[0066] Furthermore, the first material opening 311 is located directly above the second material opening 312 , and the channel cross-sections of the first material opening 311 and the second material opening 312 are the same.

[0067] Since the first material opening 311 is located above the second material opening 312, a small amount of earth will be squeezed out of the first material opening 311 during the process of the second conveying mechanism 2 lifting earth. Blocking the first material opening 311 can ensure that the earth can be smoothly moved out of the discharge port 32 from the second material opening 312 in the casing 3, so that the earth can move stably in the casing 3.

[0068] Reference Figure 2 As an optional solution, it also includes a first blocking component 4 for blocking the first material opening 311, and the first blocking component 4 is detachably fixedly connected to the casing 3.

[0069] Specifically, the first plugging component 4 blocks the first material opening 311, and the first plugging component 4 is detachably fixedly connected to the first material opening 311. When blockage occurs in the casing 3, the first plugging component 4 can be removed to facilitate maintenance of the casing 3.

[0070] When the casing 3 is used to lift the earthwork of another foundation pit after completing the earthwork lifting of one foundation pit, the first plugging assembly 4 is detachably fixedly connected to the casing 3, which helps to facilitate the reuse of the first plugging assembly 4.

[0071] Reference Figure 3 As an optional solution, the first plugging assembly 4 includes an inner plate 41, an outer plate 42 and a fastening assembly 43. The inner plate 41 is an arc-shaped plate that contacts the inner side wall of the casing 3 and covers the first material opening 311; the outer plate 42 contacts the outer side wall of the casing 3; and the fastening assembly 43 presses the inner plate 41 and the outer plate 42 against the casing 3.

[0072] Specifically, the inner plate 41 and the outer plate 42 are both arc-shaped plates, the inner plate 41 fits with the inner side wall of the casing 3, and the outer plate 42 fits with the outer side wall of the casing 3. The inner plate 41 and the outer plate 42 can both cover the first material opening 311, and the fastening assembly 43 presses the inner plate 41 against the inner side wall of the casing 3, and presses the outer plate 42 against the outer side wall of the casing 3. The fastening assembly 43 realizes a detachable fixed connection between the inner plate 41 and the outer plate 42 and the casing 3.

[0073] It should be noted that, in order to facilitate the display of the inner plate 41, the internal wall thickness is magnified in the drawings. The wall thickness of the inner plate 41 should be as thin as possible while ensuring the structural strength to reduce the impact on the earthwork transportation of the second conveying mechanism 2.

[0074] Reference Figure 3 As an optional solution, the fastening assembly 43 includes a screw 431 and a nut 432; wherein, one end of the screw 431 is fixedly connected to the inner plate 41, and the other end passes through the first material opening 311; a connecting hole 45 for avoiding the screw 431 is opened on the outer plate 42; the nut 432 is threadedly connected to one end of the screw 431 passing through the connecting hole 45, so as to press the inner plate 41 and the outer plate 42 against the casing 3.

[0075] Specifically, one end of the screw rod 431 is welded to the inner plate 41, and the end of the screw rod 431 welded to the inner plate 41 does not pass through the inner plate 41. The connecting hole 45 is a waist-shaped hole with a vertical length, which can accommodate one end of the screw rod 431 to pass through and move a certain distance vertically.

[0076] Reference Figure 4 As an optional solution, an annular sleeve 44 is fixed on the outer plate 42 , the outer peripheral surface of the annular sleeve 44 is in contact with the side surface of the first material port 311 , and a grouting port is provided above the side wall of the annular sleeve 44 .

[0077] Specifically, the grouting port is configured as a notch above the annular sleeve 44 .

[0078] After the earthwork of the deep foundation pit is lifted, the casing 3 is used as a maintenance port. The first material port 311 needs to be closed, and the outer plate 42 is separated from the outer wall of the casing 3 by rotating the nut 432, and then the concrete mortar is injected into the annular sleeve 44 and the first material port 311 through the grouting port. The annular sleeve 44 can prevent the mortar from flowing out of the first material port 311, and then the outer plate 42 is pressed against the outer wall of the casing 3 by the nut 432. After the concrete mortar solidifies, the filling of the first material port 311 is completed.

[0079] Reference Figure 5 As an optional solution, the plurality of feed ports 31 further include a third feed port 313 and a second blocking component 5. The third feed port 313 is located below the second feed port 312; the second blocking component 5 can block the second feed port 312; the first conveying mechanism 1 is connected to the third feed port 313 when the first feed port 311 and the second feed port 312 are blocked.

[0080] Specifically, the drawings only illustrate four feed ports 31, which are the first feed port 311, the second feed port 312, the third feed port 313 and the fourth feed port from top to bottom, wherein the fourth feed port is not marked in the drawings, and the actual number of feed ports 31 is determined according to design requirements. In this embodiment, the height interval between the third feed port 313 and the second feed port 312 is 5 meters. The composition of the second plugging component 5 is the same as that of the first plugging component 4. In another embodiment, the second plugging component 5 can be composed of other structural forms.

[0081] When the first conveying mechanism 1 is connected to the third material port 313 , the first blocking component 4 blocks the first material port 311 , and the second blocking component 5 blocks the second material port 312 .

[0082] When the first conveying mechanism 1 is connected to a feed port 31 at a corresponding height, the feed ports above the feed port 31 can be blocked by using a blocking member.

[0083] Reference Figure 1 As an optional solution, a third conveying mechanism is also included, which is arranged on the ground and is used to move the earth sent out from the discharge port 32.

[0084] Specifically, the third conveying mechanism is set according to the needs of the site, and the third conveying mechanism is an existing belt conveying mechanism, or the third conveying mechanism is a forklift. The third mechanism moves the earth lifted from the casing to the ground above to a muck truck or other designated areas.

[0085] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the above embodiments, a person skilled in the art should understand that the technical solutions described in the above embodiments can still be modified, or some or all of the technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and description of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way.

[0086] The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A deep foundation pit earth-taking device, characterized in that: It comprises a casing (3), a first conveying mechanism (1) and a second conveying mechanism (2); wherein: The casing (3) comprises a discharge port (32) and a plurality of feed ports (31); The casing (3) is placed vertically, the discharge port (32) is located above the ground, and the plurality of feed ports (31) are located below the ground and are arranged at intervals along the vertical direction; The first conveying mechanism (1) is used to convey earth into the casing (3) through the feed port (31); the second conveying mechanism (2) is used to convey earth in the casing (3) out of the casing (3) through the discharge port (32).

2. The deep foundation pit earth-taking equipment according to claim 1, characterized in that: The multiple feed ports (31) include a first feed port (311) and a second feed port (312), wherein the first feed port (311) is located above the second feed port (312); The first conveying mechanism (1) can be connected to the first material port (311) or the second material port (312), and the first conveying mechanism (1) is connected to the second material port (312) when the first material port (311) is blocked.

3. The deep foundation pit earth-taking equipment according to claim 2, characterized in that: It also comprises a first blocking component (4) for blocking the first material opening (311), wherein the first blocking component (4) is detachably fixedly connected to the casing (3).

4. The deep foundation pit earth-taking equipment according to claim 3, characterized in that: The first blocking assembly (4) comprises an inner plate (41), an outer plate (42) and a fastening assembly (43); wherein: The inner plate (41) is an arc-shaped plate that contacts the inner side wall of the casing (3) and covers the first material opening (311); The outer plate (42) is in contact with the outer side wall of the casing (3); The fastening assembly (43) presses the inner plate (41) and the outer plate (42) against the casing (3).

5. The deep foundation pit earth-taking equipment according to claim 4, characterized in that: The fastening assembly (43) comprises a screw (431) and a nut (432); wherein: One end of the screw rod (431) is fixedly connected to the inner plate (41), and the other end passes through the first material opening (311); The outer plate (42) is provided with a connection hole (45) for accommodating the screw rod (431); The nut (432) is threadedly connected to one end of the screw rod (431) passing through the connecting hole (45) so as to press the inner plate (41) and the outer plate (42) against the casing (3).

6. The deep foundation pit earth-taking equipment according to claim 5, characterized in that: An annular sleeve (44) is fixed on the outer plate (42), the outer peripheral surface of the annular sleeve (44) is in contact with the side surface of the first material port (311), and a grouting port is provided above the side wall of the annular sleeve (44).

7. The deep foundation pit earth-taking equipment according to claim 2, characterized in that: The multiple feed ports (31) further include a third feed port (313) and a second blocking component (5); wherein: The third material opening (313) is located below the second material opening (312); The second blocking component (5) is capable of blocking the second material opening (312); The first conveying mechanism (1) is connected to the third material port (313) when the first material port (311) and the second material port (312) are blocked.

8. The deep foundation pit earth-taking equipment according to claim 1, characterized in that: The casing (3) comprises a cylinder body of a concrete structure which can be used as a maintenance opening.

9. The deep foundation pit earth-taking equipment according to claim 2, characterized in that: The first material port (311) and the second material port (312) are two feed ports (31) adjacent to each other in the vertical direction, and the first material port (311) and the second material port (312) are spaced 4-6 meters apart in the vertical direction; and / or the vertical height of the casing (3) is 25-50 meters; And / or the diameter of the casing (3) is 0.8-1.2 meters.

10. The deep foundation pit earth-taking equipment according to claim 1, characterized in that: It also comprises a third conveying mechanism, which is arranged on the ground and is used to move the earth discharged from the discharge port (32).

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