Unloading device

Abstract

An embodiment of the present invention provides a car unloading device, including a support assembly, a lifting assembly, a vertical screw conveyor, a horizontal screw conveyor, and a scraper assembly. The lifting assembly includes a lifting frame slidably arranged on the support assembly, and a first driving member that drives the lifting frame to move vertically; the vertical screw conveyor is arranged on the lifting frame, and a feed port is opened on the side wall adjacent to its bottom end, and a discharge port is opened on the upper part; the horizontal screw conveyor is arranged on the vertical screw conveyor, and the feed end is connected to the discharge port of the vertical screw conveyor; the scraper assembly includes two second telescopic members arranged on both sides of the vertical screw conveyor, two third telescopic members respectively arranged vertically on the second telescopic members, and two first scrapers respectively arranged on the two third telescopic members. The entire unloading process will not apply external clamping force to the car body, which can prevent the car body from being damaged by force such as deformation and paint peeling, ensuring the integrity of the car body during unloading, and eliminating the operation and repair cost of the car body.

Description

Technical Field

[0001] The invention belongs to the technical field of train unloading, and in particular relates to an unloading device. Background Art

[0002] Transporting goods by train is a common mode of transportation. Train transportation has the characteristics of large carrying capacity, low transportation cost, long-distance transportation, and timely arrival of goods. It is often used for long-distance transportation of bulk materials such as coal and sand and gravel. The total amount of coal transported by railways in my country each year is as high as tens of billions of tons.

[0003] Upon arrival, train cars need to be unloaded. Manual unloading of bulk materials like coal and sand and gravel is slow and labor-intensive, so a car dumper is often used to assist. A car dumper clamps the car, flipping it over and dumping the cargo. Excessive clamping force can easily cause paint peeling or deformation. Summary of the Invention

[0004] The present invention provides a car unloading device, which aims to solve the problem of using a tipping machine to assist in unloading in the prior art. When the tipping machine is working, it needs to clamp the car body to drive the car body to flip over and dump the goods in the car body. When the clamping force is too large, the surface paint layer is likely to fall off or the car body is deformed.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is to provide a vehicle unloading device, comprising:

[0006] Support components;

[0007] A lifting assembly, comprising a lifting frame slidably mounted on the support assembly in a vertical direction, and a first driving member for driving the lifting frame to move vertically, wherein the first driving member is mounted on the support assembly;

[0008] A vertical screw conveyor is vertically arranged on the lifting frame, and a feed port is opened on the side wall near the bottom end, and a discharge port is opened on the upper part of the vertical screw conveyor;

[0009] a horizontal screw conveyor connected to the vertical screw conveyor, with its feed end communicating with the discharge port of the vertical screw conveyor; and

[0010] The scraper assembly includes two second telescopic members respectively arranged on both sides of the vertical screw conveyor along a first horizontal direction, two third telescopic members respectively arranged vertically at the telescopic ends of the second telescopic members, and two first scrapers respectively arranged at the telescopic ends of the two third telescopic members, and the first horizontal direction is perpendicular to the conveying direction of the horizontal screw conveyor.

[0011] In one possible implementation, the support assembly includes:

[0012] Unloading tracks; and

[0013] The bracket is arranged on one side of the unloading track, and the lifting frame is arranged on the bracket along a vertical sliding direction.

[0014] In a possible implementation, the lifting frame is provided with a plurality of the vertical screw conveyors along a first horizontal direction, and the horizontal screw conveyors, the scraper assemblies and the vertical screw conveyors correspond one to one.

[0015] In a possible implementation, the telescopic strokes of the second telescopic members of two adjacent scraper assemblies partially overlap in the first horizontal direction.

[0016] In one possible implementation, the vertical screw conveyor includes:

[0017] The conveyor body is arranged on the lifting frame and is provided with a feeding cavity in the vertical direction, the discharge port is provided at the upper part of the feeding cavity, and an intermediate material port is provided at the bottom of the feeding cavity;

[0018] A drill body is provided at the bottom of the conveyor body, the bottom of the drill body has a sharp end, the drill body is provided with a feed cavity connected to the middle feed port, and the side wall of the feed cavity is provided with the feed port;

[0019] A feeding screw vertically passes through the middle material opening, with both ends of the feeding screw respectively disposed in the feeding cavity and the feeding cavity; and

[0020] The fourth driving member is provided on the conveyor body and is used for driving the feeding screw to rotate.

[0021] In a possible implementation, the drill body is rotatable along a vertical axis at the bottom of the conveyor body, and the vertical screw conveyor further includes a fifth driving member provided at the conveyor body for driving the drill body to rotate.

[0022] In a possible implementation, two first scrapers are arranged on both sides of the vertical screw conveyor relative to each other, and the first scrapers are semi-conical components. When the two first scrapers are matched together, a conical material receiving space that is thinner at the top and thicker at the bottom is formed.

[0023] In one possible implementation, the scraper assembly also includes two second scrapers, which are respectively arranged at the telescopic ends of the two third telescopic members and are located on the side of the corresponding first scraper away from the vertical screw conveyor. The second scraper is a plate-like component perpendicular to the first horizontal direction.

[0024] In a possible implementation, a spray water pipe is provided on the second scraper.

[0025] In a possible implementation, the unloading device further includes an intermediate silo, which is connected to the discharge end of the horizontal screw conveyor.

[0026] Compared with the prior art, the unloading device provided by the present invention has the following beneficial effects:

[0027] The unloading device provided by the present invention includes a support assembly, a lifting assembly, a vertical screw conveyor, a horizontal screw conveyor, and a scraper assembly. The vertical screw conveyor is mounted on the lifting assembly. A first driving member can drive the vertical screw conveyor to move up and down. The two first scrapers can move in a first horizontal direction under the drive of a second telescopic member and can move up and down under the drive of a third telescopic member.

[0028] The working principle of the unloading device provided by the present invention is: first, the vertical screw conveyor and the scraper assembly are raised to a height higher than the train car to avoid collision. Then the train car that needs to be unloaded is moved along the first horizontal direction to the bottom of the vertical screw conveyor, and the first driving member drives the lifting frame and the vertical screw conveyor to descend, so that the feed port is inserted downward into the material (coal, sand and gravel) in the car, so that the material can enter the vertical screw conveyor from the feed port, and the vertical screw conveyor is started to lift the material entering it upward to the discharge port, and then transport it outward from the horizontal screw conveyor to other locations to complete the unloading. The entire unloading process will not apply external clamping force to the car, and can prevent the car from being damaged by deformation, paint peeling, etc. due to the force, ensuring the integrity of the car during unloading, and eliminating the operation and repair cost of the car repair.

[0029] Taking into account the long length of the carriage, the present invention can scrape materials from other positions to the position of the vertical screw conveyor by setting a scraper assembly. The scraper assembly includes two relatively arranged first scrapers. When scraping is required, the first scraper is first driven downward by the third telescopic member and inserted into the material to a certain depth. Then, the second telescopic member is contracted to gather materials from other positions to the position of the vertical screw conveyor, and the materials from other positions of the carriage are scraped to the feed port, ensuring complete unloading and solving the problem of residual materials due to incomplete unloading. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 A schematic structural diagram of a vehicle unloading device provided in an embodiment of the present invention;

[0031] Figure 2 A schematic structural diagram of the unloading device provided by an embodiment of the present invention from another angle;

[0032] Figure 3 A schematic structural diagram of the unloading device provided by an embodiment of the present invention from another angle;

[0033] Figure 4A schematic structural diagram of the unloading device provided by an embodiment of the present invention from another angle;

[0034] Figure 5 Schematic diagram of the structure of a vertical screw conveyor and a horizontal screw conveyor in an embodiment of the present invention;

[0035] Figure 6 for Figure 5 A partial enlarged view of part A in the middle;

[0036] Figure 7 2. It is an internal cross-sectional view of a vertical screw conveyor and a horizontal screw conveyor in an embodiment of the present invention;

[0037] Figure 8 Schematic diagram of the structure of the scraper assembly in an embodiment of the present invention.

[0038] Description of reference numerals:

[0039] 1. Unloading device;

[0040] 10. Support assembly; 11. Unloading track; 12. Bracket;

[0041] 20. Lifting assembly; 21. Lifting frame; 22. First driving member;

[0042] 30. Vertical screw conveyor; 31. Conveyor body; 311. Feeding chamber; 312. Discharge port; 32. Drill body; 321. Feeding chamber; 322. Feeding port; 33. Feeding screw; 34. Fourth drive member; 35. Fifth drive member;

[0043] 40. Horizontal screw conveyor;

[0044] 50. Scraper assembly; 51. Second telescopic member; 52. Third telescopic member; 53. First scraper; 54. Second scraper; 55. Spray water pipe;

[0045] 60. Intermediate silo. DETAILED DESCRIPTION

[0046] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0047] It should be noted that when an element is referred to as being "fixed to," "fixed," or "fixedly disposed" on another element, it may be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected to," "connected to" another element, it may be directly connected to the other element or there may also be an intermediate element. When an element is referred to as being "set on," "disposed on" another element, it may be directly on the other element or there may also be an intermediate element. "Multiple" refers to two or more. "At least one" refers to one or more. "Several" refers to one or more.

[0048] Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

[0049] Please also refer to Figures 1 to 8 , the unloading device 1 provided in an embodiment of the present invention is described below.

[0050] See also Figures 1 to 4 、 Figure 6 An embodiment of the present invention provides a vehicle unloading device 1, comprising a support assembly 10, a lifting assembly 20, a vertical screw conveyor 30, a horizontal screw conveyor 40, and a scraper assembly 50. The lifting assembly 20 includes a lifting frame 21 that slides vertically on the support assembly 10, and a first driving member 22 that drives the lifting frame 21 to move vertically, and the first driving member 22 is provided on the support assembly 10; the vertical screw conveyor 30 is vertically provided on the lifting frame 21, and a feed port 322 is opened on the side wall adjacent to the bottom end, and a discharge port 312 is opened on the upper part of the vertical screw conveyor 30; the horizontal screw conveyor 40 is provided on the vertical screw conveyor 30, and the feed end is connected to the discharge port 312 of the vertical screw conveyor 30; the scraper assembly 50 includes two second telescopic members 51 respectively provided on both sides of the vertical screw conveyor 30 along the first horizontal direction, two third telescopic members 52 respectively provided vertically at the telescopic ends of the second telescopic members 51, and two first scrapers 53 respectively provided at the telescopic ends of the two third telescopic members 52, and the first horizontal direction is perpendicular to the conveying direction of the horizontal screw conveyor 40.

[0051] Compared with the prior art, the unloading device 1 provided by the present invention has the following beneficial effects:

[0052] The unloading device 1 provided by the present invention includes a support assembly 10, a lifting assembly 20, a vertical screw conveyor 30, a horizontal screw conveyor 40, and a scraper assembly 50. The vertical screw conveyor 30 is arranged on the lifting assembly 20. The first driving member 22 can drive the vertical screw conveyor 30 to move up and down. The two first scrapers 53 can move in a first horizontal direction under the drive of the second telescopic member 51 and can move up and down under the drive of the third telescopic member 52.

[0053] The working principle of the unloading device 1 provided by the present invention is as follows: first, the vertical screw conveyor 30 and the scraper assembly 50 are raised to a height higher than the train car to avoid collision. Then the train car to be unloaded is moved along the first horizontal direction to the bottom of the vertical screw conveyor 30, and the first driving member 22 drives the lifting frame 21 and the vertical screw conveyor 30 to descend, so that the feed port 322 is inserted downward into the material (coal, sand and gravel) in the car, so that the material can enter the vertical screw conveyor 30 from the feed port 322. The vertical screw conveyor 30 is started and the material entering it is lifted upward to the discharge port 312, and then transported outward from the horizontal screw conveyor 40 to other locations to complete the unloading. The entire unloading process does not apply an external clamping force to the car, which can prevent the car from being damaged by deformation, paint peeling, etc. due to the force, ensuring the integrity of the car during unloading and eliminating the operation and repair cost of the car repair.

[0054] Taking into account the long length of the carriage, the present invention can scrape materials from other positions to the position of the vertical screw conveyor 30 by setting a scraper assembly 50. The scraper assembly 50 includes two first scrapers 53 arranged opposite to each other. When scraping is required, the first scraper 53 is first driven downward by the third telescopic member 52 and inserted into the material to a certain depth. Then, the second telescopic member 51 is retracted to gather materials from other positions to the position of the vertical screw conveyor 30, and the materials from other positions of the carriage are scraped to the feed port 322, ensuring complete unloading and solving the problem of residual materials due to incomplete unloading.

[0055] In this embodiment of the present invention, the support assembly 10 is used to provide support for other components and the train carriage. The specific structure, shape, and material of the support assembly 10 are not limited, as long as it provides stable support for the various components. The lifting assembly 20 comprises a support frame mounted on the support assembly 10 and a first drive member 22. The first drive member 22 is used to drive the lifting frame 21 vertically upward and downward, thereby driving the vertical screw conveyor 30 downward and downward into the train carriage materials. After unloading is completed, the first drive member 22 drives the vertical screw conveyor 30 to a height above the train carriage.

[0056] There is no limitation on the specific structure of the first driving member 22. It can be a telescopic driving structure such as a hydraulic cylinder, a pneumatic cylinder, an electric telescopic rod that can be vertically extended or retracted, or it can be a mechanical structure such as a screw lift, a pulley lift, a slider mechanism that can output reciprocating linear motion.

[0057] The embodiment of the present invention can unload bulk materials with high fluidity, such as coal powder, coal cinders, small coal lumps, and sand and gravel, so that the materials can smoothly enter the side feed port 322. The vertical screw conveyor 30 has a feed port 322 at the bottom. When the bottom end is inserted into the material, under the action of gravity and internal extrusion force, the material can enter the conveyor through the feed port 322 on the bottom side wall and be lifted to the top horizontal screw conveyor 40. The horizontal screw conveyor 40 transports the material to other locations.

[0058] In order to facilitate the insertion of materials into the vertical screw conveyor 30 , a sharp insertion end may be provided at the bottom of the vertical screw conveyor 30 .

[0059] When the embodiment of the present invention is in use, the bottom of the vertical screw conveyor 30 is buried in the material, which generates less dust during unloading and is more environmentally friendly.

[0060] The horizontal screw conveyor 40 is used to transport the materials lifted by the vertical screw conveyor 30 to other locations. Optionally, the horizontal screw conveyor 40 can be connected to a silo for temporary storage of materials. Or it can be connected to other conveying devices (belt conveyors) and the like.

[0061] The scraper assembly 50 is used to gather materials at other locations in the carriage toward the center so that the materials can smoothly enter the vertical screw conveyor 30. When there is only one vertical screw conveyor 30, the telescopic stroke of the two second telescopic members 51 along the first horizontal direction should be adapted to the length of the carriage to scrape the materials at the front and rear ends of the carriage to the center.

[0062] The mounting end of the second telescopic member 51 is fixedly connected to the side wall of the vertical screw conveyor 30, and the telescopic end extends along the first horizontal direction away from the vertical screw conveyor 30. The mounting end of the third telescopic member 52 is fixedly connected to the telescopic end of the second telescopic member 51, and the telescopic end extends downward and is fixedly connected to the first scraper 53.

[0063] There is no limitation on the specific structures of the second telescopic member 51 and the third telescopic member 52 , which may be telescopic drive structures such as hydraulic cylinders, air cylinders, and electric telescopic rods that can be vertically telescopic.

[0064] See also Figure 1 and Figure 2 In some possible embodiments, the support assembly 10 includes an unloading rail 11 and a bracket 12 disposed on one side of the unloading rail 11 , and the lifting frame 21 is vertically slidably disposed on the bracket 12 .

[0065] In this embodiment, the unloading track 11 is used for moving the train carriages. The bracket 12 is provided on one side of the unloading track 11 , and the lifting frame 21 is slidably fitted on the bracket 12 .

[0066] See also Figure 1 and Figure 3 In some possible embodiments, the lifting frame 21 is provided with a plurality of vertical screw conveyors 30 along the first horizontal direction, and the horizontal screw conveyors 40 and the scraper assemblies 50 correspond one to one to the vertical screw conveyors 30 .

[0067] In this embodiment, a plurality of vertical screw conveyors 30 are arranged on the lifting frame 21, and the plurality of vertical screw conveyors 30 are arranged at intervals along the length direction of the carriage. The horizontal screw conveyor 40 and the scraper assembly 50 correspond to the vertical screw conveyors 30 one by one. When unloading the vehicle, the plurality of vertical screw conveyors 30 work simultaneously, which helps to improve the unloading efficiency.

[0068] See also Figure 1 and Figure 3 In some possible embodiments, the telescopic strokes of the second telescopic members 51 of two adjacent scraper assemblies 50 partially overlap in the first horizontal direction.

[0069] In this embodiment, the telescopic members 51 of two adjacent scraper assemblies 50 partially overlap in the first horizontal direction, eliminating blind spots and ensuring that materials at different locations can be scraped and conveyed. Specifically, when the second telescopic member 51 of one scraper assembly 50 extends, the second telescopic member 51 of the adjacent scraper assembly 50 contracts to avoid interference and collision.

[0070] See also Figure 5 、 Figure 6 and Figure 7 In some possible embodiments, the vertical screw conveyor 30 includes a conveyor body 31, a drill body 32, a feed screw 33, and a fourth drive member 34. The conveyor body 31 is disposed on the lifting frame 21 and is vertically provided with a feed cavity 311, an outlet 312 being provided at the top of the feed cavity 311, and an intermediate material port being provided at the bottom of the feed cavity 311; the drill body 32 is disposed at the bottom of the conveyor body 31 and has a sharp end at the bottom of the drill body 32. The drill body 32 is provided with a feed cavity 321 connected to the intermediate material port, and a feed port 322 is provided on the side wall of the feed cavity 321; the feed screw 33 vertically penetrates the intermediate material port, and the two ends of the feed screw 33 are respectively disposed in the feed cavity 311 and the feed cavity 321; the fourth drive member 34 is disposed on the conveyor body 31 and is used to drive the feed screw 33 to rotate.

[0071] In this embodiment, the vertical screw conveyor 30 includes a conveyor body 31, a drill body 32, a feed screw 33, and a fourth drive member 34. The conveyor body 31 is vertically mounted on the lifting frame 21, and the drill body 32 is located below the conveyor body 31. The drill body 32 has a sharp tip to facilitate insertion of materials. To improve component durability, the drill body 32 can be made of a wear-resistant material.

[0072] The fourth driving member 34 is used to drive the feeding screw 33 to rotate, so as to lift the material from the feeding port 322 upward to the position of the discharging port 312. The fourth driving member 34 can be a power device capable of outputting rotational motion, such as a motor or a hydraulic rotary motor, and this embodiment does not limit this.

[0073] It should be noted that the feed port 322 is provided on the side wall of the feed chamber 321. There is no restriction on the shape, size, or number of the feed port 322, as long as the material can smoothly enter through the feed port 322. Multiple feed ports 322 can be provided along the circumference to ensure that material from all directions can enter through the feed port 322.

[0074] See also Figure 6 and Figure 7 In some possible embodiments, the drill body 32 is arranged at the bottom of the conveyor body 31 and rotates along the vertical axis. The vertical screw conveyor 30 also includes a fifth driving member 35 arranged at the conveyor body 31 for driving the drill body 32 to rotate.

[0075] In this embodiment, the drill body 32 is rotatably coupled to the conveyor body 31. During the downward insertion of the material, the drill body 32 rotates while downward, facilitating the downward drilling. After reaching a predetermined position, the drill body 32 rotates circumferentially, facilitating the entry of the material in all directions into the feed port 322.

[0076] The fifth driving member 35 is used to drive the drill body 32 to rotate. The specific structure of the fifth driving member 35 is not limited, and can be a rotating driving member such as a motor, a hydraulic rotary motor, etc. The driving method can be chain drive, gear drive, etc.

[0077] See also Figure 1 、 Figure 4 and Figure 8 In some possible embodiments, two first scrapers 53 are relatively arranged on both sides of the vertical screw conveyor 30. The first scrapers 53 are semi-conical components. When the two first scrapers 53 are matched, a conical material receiving space with a thin top and a thick bottom is formed.

[0078] In this embodiment, the width (cone diameter) of the first scraper 53 is adapted to the width of the carriage. When the first scraper 53 moves along the length direction of the carriage, it can scrape the material to the position of the vertical screw conveyor 30 .

[0079] In this embodiment, the first scraper 53 is designed to be a semi-conical shape with a thin top and a thick bottom, which can automatically gather the material to the center position when scraping the material, so that the material is accumulated with the vertical screw conveyor 30 as the center, reducing material residue and making unloading more thorough.

[0080] See also Figure 1 、 Figure 4 and Figure 8In some possible embodiments, the scraper assembly 50 also includes two second scrapers 54, which are respectively arranged at the telescopic ends of the two third telescopic members 52, and are located on the side of the corresponding first scraper 53 away from the vertical screw conveyor 30. The second scraper 54 is a plate-shaped component perpendicular to the first horizontal direction.

[0081] Since the carriage is usually rectangular with right angles on all sides, this embodiment provides a second scraper 54, and the second scraper 54 is plate-shaped, and the scraper width is adapted to the diameter of the first scraper 53, that is, the width of the carriage, which can smoothly scrape out the material in the corner, reduce material residue, and make unloading more thorough.

[0082] See also Figure 8 In some possible embodiments, a spray water pipe 55 is provided on the second scraper 54 .

[0083] Considering that dust is easily generated when scraping materials, in this embodiment, a spray water pipe 55 is provided on the second scraper 54 to spray water to reduce dust when scraping materials, thereby preventing dust from spreading.

[0084] The spray water pipe 55 is connected to the high-pressure water pipe and can be set along the width direction of the second scraper 54. A plurality of water spray heads are set along the length direction of the spray water pipe 55. High-pressure water is transported to the spray water pipe 55 through the high-pressure water pipe to spray water to reduce dust.

[0085] See also Figure 8 In some possible embodiments, the unloading device 1 further includes an intermediate silo 60, which is connected to the discharge end of the horizontal screw conveyor 40. The intermediate silo 60 can temporarily store the unloaded materials. When in use, the materials can be transported to other locations through other conveying devices.

[0086] It can be understood that the various parts in the above embodiments can be freely combined or deleted to form different combination embodiments. The specific contents of each combination embodiment will not be repeated here. After this description, it can be considered that the specification of the present invention has recorded various combination embodiments and can support different combination embodiments.

[0087] 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 and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. Unloading device, characterized in that: include: Support components; A lifting assembly, comprising a lifting frame slidably mounted on the support assembly in a vertical direction, and a first driving member for driving the lifting frame to move vertically, wherein the first driving member is mounted on the support assembly; A vertical screw conveyor is vertically arranged on the lifting frame, and a feed port is opened on the side wall near the bottom end, and a discharge port is opened on the upper part of the vertical screw conveyor; a horizontal screw conveyor connected to the vertical screw conveyor, with its feed end communicating with the discharge port of the vertical screw conveyor; and a scraper assembly comprising two second telescopic members respectively arranged on opposite sides of the vertical screw conveyor along a first horizontal direction, two third telescopic members respectively arranged vertically at the telescopic ends of the second telescopic members, and two first scrapers respectively arranged at the telescopic ends of the two third telescopic members, wherein the first horizontal direction is perpendicular to the conveying direction of the horizontal screw conveyor; The lifting frame is provided with a plurality of the vertical screw conveyors along the first horizontal direction, and the horizontal screw conveyors, the scraper assemblies and the vertical screw conveyors correspond one to one; the telescopic strokes of the second telescopic members of two adjacent scraper assemblies partially overlap in the first horizontal direction.

2. The unloading device according to claim 1, characterized in that: The support assembly comprises: Unloading tracks; and The bracket is arranged on one side of the unloading track, and the lifting frame is arranged on the bracket along a vertical sliding direction.

3. The unloading device according to claim 1, characterized in that: The vertical screw conveyor comprises: The conveyor body is arranged on the lifting frame and is provided with a feeding cavity in the vertical direction, the discharge port is provided at the upper part of the feeding cavity, and an intermediate material port is provided at the bottom of the feeding cavity; A drill body is provided at the bottom of the conveyor body, the bottom of the drill body has a sharp end, the drill body is provided with a feed cavity connected to the middle feed port, and the side wall of the feed cavity is provided with the feed port; A feeding screw vertically passes through the middle material opening, with both ends of the feeding screw respectively disposed in the feeding cavity and the feeding cavity; and The fourth driving member is provided on the conveyor body and is used for driving the feeding screw to rotate.

4. The unloading device according to claim 3, characterized in that: The drill body is rotatable along a vertical axis and is arranged at the bottom of the conveyor body. The vertical screw conveyor further includes a fifth driving member arranged at the conveyor body and used to drive the drill body to rotate.

5. The unloading device according to claim 1, characterized in that: The two first scrapers are oppositely arranged on both sides of the vertical screw conveyor. The first scrapers are semi-conical components. When the two first scrapers are matched, a conical material receiving space with a thin top and a thick bottom is formed.

6. The unloading device according to claim 5, characterized in that: The scraper assembly also includes two second scrapers, which are respectively arranged at the telescopic ends of the two third telescopic members and are located on the side of the corresponding first scraper away from the vertical screw conveyor. The second scraper is a plate-shaped component perpendicular to the first horizontal direction.

7. The unloading device according to claim 6, characterized in that: The second scraper is provided with a spray water pipe.

8. The unloading device according to claim 1, characterized in that: The unloading device further includes an intermediate silo, which is connected to the discharge end of the horizontal screw conveyor.

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