Earthwork conveying belt feeding device for deep foundation pit excavation

Abstract

The utility model discloses a deep foundation pit excavation earthwork conveying belt feeding device which comprises a material conveying bin with an opening in the top, a feeding hopper is arranged at the top of one side of the material conveying bin, a grating screen is arranged at the opening in the top of the feeding hopper, and a discharging opening is formed in a bottom plate of the side, away from the feeding hopper, of the material conveying bin and located above a conveying belt. A spiral reamer is further arranged in the material conveying bin, one end of the spiral reamer is driven by a driving motor located on the outer side of the material conveying bin, and the spiral reamer can convey earthwork in the material conveying bin to the discharging port. The feeding device is simple in structure and ingenious in design, stable feeding of excavated earthwork is achieved through cooperation of the conveying bin arranged above the conveying belt in a striding mode and the spiral reamer, stable and efficient operation of the conveying belt is guaranteed, the risk that the earthwork falls in the transportation process is reduced, the earthwork loaded into the feeding hopper through an excavator can be screened, and therefore the earthwork conveying efficiency is improved. The spiral reamer is prevented from being clamped, so that the whole device can stably and uninterruptedly operate, and the excavation efficiency of a foundation pit is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of deep foundation pit excavation, in particular to a deep foundation pit excavation earthwork conveyor belt feeding device. Background Art

[0002] At present, with the improvement of building function requirements, the rational development and utilization of underground space is a requirement for sustainable urban development. The foundation pit design is getting deeper and deeper. Deep foundation pits often require earth excavation. For deep foundation pits with internal supports and small sites, conveyor belts are often required to transport the excavated earth. To this end, the excavated earth needs to be efficiently and stably loaded onto the conveyor belt at the bottom of the conveyor belt. However, the existing method of directly transporting the earth by an excavator or by setting up a simple hopper often has the problem of limited loading space and low loading efficiency. Moreover, it is difficult for the existing loading method to evenly spread the excavated earth on the conveyor belt, which results in low utilization of the conveyor belt, and even the problem of piles of earth falling from the conveyor belt during transportation. Utility Model Content

[0003] The utility model aims to provide a conveyor belt feeding device for deep foundation pit excavation to solve the technical problems described in the background technology.

[0004] In order to achieve the above technical purpose, the utility model adopts the following technical solutions:

[0005] A feeding device for a conveyor belt for excavating earth in a deep foundation pit comprises a feeding bin with an opening on the top, an upper hopper is arranged on the top of one side of the feeding bin, and a grille screen is arranged at the top opening of the upper hopper, a discharge port is arranged on the bottom plate of the feeding bin on the side away from the upper hopper, and the discharge port is located above the conveyor belt, a spiral reamer is also arranged inside the feeding bin, one end of the spiral reamer is driven by a driving motor located outside the feeding bin, and the spiral reamer can transport the earth in the feeding bin to the discharge port.

[0006] Preferably, an attached vibrator is installed on the outer side of the wall plate of the upper hopper.

[0007] Preferably, the grille screen is formed by welding vertically arranged steel plate strips.

[0008] Preferably, the grille screen is hingedly mounted at the top opening of the upper hopper via hinges.

[0009] Preferably, a retaining plate is provided at the discharge port.

[0010] Compared with the prior art, the utility model has the following beneficial effects: the utility model has a simple structure and ingenious design. The feeding bin arranged across the conveyor belt cooperates with the spiral reamer to realize the smooth feeding of the excavated earth, thereby ensuring the smooth and efficient operation of the conveyor belt and reducing the risk of earth falling during transportation. At the same time, the loading hopper arranged on one side of the feeding bin can provide a wider operating space for the feeding function. The cooperation of the grid screen and the vibrator can screen the earth loaded into the loading hopper by the excavator to remove steel bars, stones and other debris to prevent such debris from falling into the feeding bin and jamming the spiral reamer. At the same time, it can also play a certain cutting role on large pieces of soil, so that when the excavated soil volume is too large or the water content is high, the earth can fall into the feeding bin evenly in a relatively small volume, thereby reducing the pressure on the spiral reamer and avoiding excessive operating load of the driving motor, so that the entire device can operate smoothly and uninterruptedly, ensuring the excavation efficiency of the foundation pit. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The above and / or other aspects and advantages of the present invention will become clearer and easier to understand through the detailed description made in conjunction with the following drawings, which are only schematic and do not limit the present invention, wherein:

[0012] Figure 1 It is a schematic diagram of the top view structure of the utility model;

[0013] Figure 2 This is a schematic diagram of the main structure of the utility model;

[0014] Figure 3 It is a side structural schematic diagram of the utility model.

[0015] Figure numerals: 1. upper hopper; 2. feed bin; 3. spiral reamer; 4. drive motor; 5. vibrator; 6. grid screen; 7. hinge; 8. support frame; 9. conveyor belt; 10. discharge port; 11. retaining plate. DETAILED DESCRIPTION

[0016] Hereinafter, an embodiment of a deep foundation pit excavation earthwork conveyor belt feeding device of the utility model will be described with reference to the accompanying drawings. The embodiments recorded herein are specific embodiments of the utility model, which are used to illustrate the concept of the utility model, are explanatory and exemplary, and should not be interpreted as limiting the implementation mode of the utility model and the scope of the utility model. In addition to the embodiments recorded herein, those skilled in the art can also adopt other obvious technical solutions based on the contents disclosed in the claims and the specification of this application, including technical solutions that adopt any obvious replacement and modification of the embodiments recorded herein.

[0017] In the description of the present invention, it should be noted that the terms "front", "rear", "left", "right", "top", "bottom", "up", "down", "inside", "outside", "horizontal", "longitudinal", "vertical", "oblique" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0018] The drawings of this specification are schematic diagrams, which assist in explaining the concept of the utility model and schematically show the shapes of various parts and their mutual relationships. Please note that in order to clearly show the structure of various components of the embodiments of the utility model, the drawings are not drawn according to the same scale. The same reference numerals are used to represent the same parts.

[0019] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The embodiments are only used to explain the present invention and are not intended to limit the scope of the present invention. Figure 1-3 , the preferred embodiments of the utility model are further described in detail:

[0020] like Figure 1-3 As shown, the utility model preferably adopts a conveyor belt feeding device for deep foundation pit excavation, comprising a feeding bin 2 with an opening at the top, the feeding bin 2 is arranged above the conveyor belt 9 through a support frame 8 arranged at the bottom, an upper hopper 1 is arranged on the top of one side of the feeding bin 2, and a grid screen 6 is arranged at the top opening of the upper hopper 1, a discharge port 10 is opened at the bottom plate of the feeding bin 2 on the side away from the upper hopper 1, and the discharge port 10 is located above the conveyor belt 9, and the upper hopper 1 is located on the other side away from the conveyor belt 9, which can provide a wider operating space for the excavator and improve the loading efficiency of the earthwork, and a spiral reamer 3 is also arranged inside the feeding bin 2, one end of the spiral reamer 3 is driven by a driving motor 4 located outside the feeding bin 2, and the spiral reamer 3 can transport the earthwork in the feeding bin 2 to the discharge port 10, in order to ensure the stable installation of the driving motor 4, the driving motor 4 can also be installed in place through the support frame 8;

[0021] The feed bin 2 and the upper hopper 1 are both made of 10mm thick steel plates welded together. The feed bin 2 is preferably designed as a rectangular parallelepiped structure with a top opening, and the upper hopper 1 can be set as a bucket structure with a large top opening and a small bottom opening, so that the earthwork can be more conveniently transported to the feed bin 2 by an excavator. The grid screen 6 is welded by vertically arranged steel strips, preferably using 10mm thick and 150mm wide steel strips crisscrossed and welded into a grid-like grate structure, and the size of each grid is controlled at about 200×200mm. The top of the grille screen 6 is flush with the top of the upper hopper 1. It is used to screen out the steel bars, stones, etc. in the soil when the excavator loads the soil into the upper hopper 1 to prevent them from falling into the feed bin 2 and blocking the spiral reamer 3. At the same time, it plays a certain cutting role on the large pieces of soil and divides them into small pieces. The grille screen 6 is not welded to the side wall of the upper hopper 1. C25 steel bars are welded around the bottom of the grille screen 6 along the side wall of the upper hopper 1 to hold the grille screen 6 in place. A hinge is set at the side wall of the upper hopper 1. 7 The grille screen 6 is hinged to the upper hopper 1, so that when there are too many debris such as steel bars and stones screened out on the grille screen 6, the grille screen 6 can be lifted up by an excavator for cleaning. In order to more conveniently achieve the above purpose, a part of the top of the wall plate on the side where the upper hopper 1 is hinged to the grille screen 6 should be cut off to form an installation gap. In order to better play the screening and cutting role of the grille screen 6, an attached vibrator 5 should be installed on the outer side of the side wall of the upper hopper 1, so that when the excavated soil volume is too large or the water content is high, the soil can be more The crushed soil can fall into the feeding bin 2 well, and the two sets of spiral reamers 3 arranged at the bottom of the feeding bin 2 are responsible for pushing the crushed soil to the discharge port 10, so that the soil is evenly spread on the conveyor belt 9. Of course, in order to prevent the soil at the discharge port 10 from splashing to the outside of the conveyor belt 9, retaining plates 11 can be arranged on both sides of the conveyor belt 9. The top of the retaining plate 11 is fixed on the feeding bin 2, and the bottom end can be detachably fixed on the frame of the conveyor belt 9 to improve its stability and avoid displacement or falling off due to long-term impact of the soil.

[0022] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A conveyor belt feeding device for deep foundation pit excavation, characterized in that: The invention comprises a feeding bin (2) with an opening at the top, an upper hopper (1) being arranged at the top of one side of the feeding bin (2), and a grille screen (6) being arranged at the top opening of the upper hopper (1), a discharge port (10) being arranged at the bottom plate of the feeding bin (2) on the side away from the upper hopper (1), and the discharge port (10) being located above a conveyor belt (9), and a spiral reamer (3) being arranged inside the feeding bin (2), one end of the spiral reamer (3) being driven by a driving motor (4) located outside the feeding bin (2), and the spiral reamer (3) being capable of conveying earth in the feeding bin (2) to the discharge port (10).

2. A conveyor belt feeding device for deep foundation pit excavation according to claim 1, characterized in that: An attached vibrator (5) is installed on the outer side of the wall plate of the upper hopper (1).

3. The deep foundation pit excavation earthwork conveyor belt feeding device according to claim 1, characterized in that: The grille screen (6) is formed by welding vertically arranged steel plate strips.

4. The deep foundation pit excavation earthwork conveyor belt feeding device according to claim 1, characterized in that: The grille screen (6) is hingedly mounted at the top opening of the upper hopper (1) via hinges (7).

5. The deep foundation pit excavation earthwork conveyor belt feeding device according to claim 1, characterized in that: A soil retaining plate (11) is provided at the discharge port (10).

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