A slurry transportation device for shield construction

Abstract

The application discloses a kind of shield construction slag transport devices, it is related to shield machine technical field, the present application includes shell, the inside of shell is provided with conveyor belt and conveyer belt, conveyer belt surface is horizontally arranged "J" type and is tightly attached to the lower surface of conveyor belt with front end, the outer surface of conveyer belt is provided with several baffle, the inside of shell is close to the upper edge of conveyer belt and is provided with cleaning brush mechanism, the inside of shell is close to the rear of conveyor belt and is provided with separation mechanism.The present application can form protection with the surface of conveyor belt by slag, to prevent gravel from damaging belt surface or inside structure, prolong service life, and the present application can reduce the problem of slag falling to the inside of shell, prolong maintenance cycle.

Description

TECHNICAL FIELD

[0001] The application belongs to the field of shield machines, and particularly relates to a shield construction spoilage soil transfer device. BACKGROUND

[0002] A shield machine is a tunnel boring machine using a shield method. The shield method is different from an open construction method. In the shield construction process, spoilage soil is generally transferred out by a shield belt machine. The spoilage soil is discharged from the rear of a cutter head and falls, but a large number of stones with large volumes are mixed in the spoilage soil. The stones directly falling on the surface of the belt machine can damage the inner frame and the belt surface of the belt machine, and affect the service life of the transfer device. The stones can also cause the problem of adhesion of the spoilage soil to the belt surface, which is not conducive to the full discharge of the spoilage soil. SUMMARY

[0003] The application provides a shield construction spoilage soil transfer device, and aims to make up for the shortcomings of the prior art and at least solve the shortcomings of the prior art mentioned in the background.

[0004] The application achieves the application purpose by adopting the following technical scheme:

[0005] The shield construction spoilage soil transfer device comprises a shell, a conveying belt and a conveying belt arranged on the inner side of the shell, the surface of the conveying belt is horizontally arranged in a J shape and is tightly arranged at the lower surface and the front end of the conveying belt, a plurality of blocking plates are arranged on the outer surface of the conveying belt, a cleaning brush mechanism is arranged on the inner side of the shell and close to the upper edge of the conveying belt, and a separation mechanism is arranged on the inner side of the shell and close to the rear of the conveying belt.

[0006] In the shield construction spoilage soil transfer device, second rotating rollers and first rotating rollers are arranged on the inner side of the conveying belt and close to the front and rear, respectively, the two ends of the first rotating rollers and the second rotating rollers are rotationally connected with the shell, an inner support frame is arranged on the inner side of the conveying belt and close to the first rotating rollers and the second rotating rollers, and the two ends of the inner support frame are fixedly connected with the inner wall of the shell.

[0007] In the shield construction spoilage soil transfer device, an edge roller is arranged on the inner side of the conveying belt and close to the rear end, an upper roller, an intermediate roller and a lower roller are arranged on the inner side of the conveying belt and close to the outer periphery of the second rotating rollers from top to bottom, respectively, the two ends of the edge roller, the upper roller, the intermediate roller and the lower roller are rotationally connected with the shell, the middle shafts of the edge roller and the first rotating roller are connected with the output shafts of motors, respectively, and the motors are fixedly installed on the side surface of the shell.

[0008] The preceding shield construction spoil conveying device, the cleaning mechanism includes a movable plate slidingly installed in the housing along the direction of the two sides of the housing, an elastic mechanism is arranged at the end of the movable plate and the connection part of the housing, a brush is fixedly installed on the front surface of the movable plate, a transmission mechanism is arranged at the rear of the movable plate, and the transmission mechanism is driven by the contact of the blocking plate.

[0009] The preceding shield construction spoil conveying device, the elastic mechanism includes a bent head fixedly arranged at one end of the movable plate and a T-shaped column slidingly arranged through the bent head, the end of the T-shaped column is fixedly connected to the outer surface of the housing, and a return spring is arranged on the outer side of the T-shaped column; the other end of the movable plate is provided with an anti-edge falling structure.

[0010] The preceding shield construction spoil conveying device, the transmission mechanism includes a fixed horizontal plate fixedly installed in the inner side of the housing and close to the upper side of the conveying belt, and a comb rack slidingly arranged through the upper surface of the fixed horizontal plate, the lower end of the comb rack is rotatably connected with a contact roller, the contact roller is arranged close to the surface of the conveying belt, a plurality of connecting frames are fixedly connected to the rear edge of the comb rack, the lower end of each connecting frame is fixedly connected with a guide column, and a slanted guide groove is arranged at the position corresponding to each guide column on the rear surface of the movable plate.

[0011] The preceding shield construction spoil conveying device, the lower end of the comb rack is fixedly connected with a sleeve ring, and the outer surface of the contact roller is provided with a ring groove, and the sleeve ring is movably arranged in the inner side of the ring groove.

[0012] The preceding shield construction spoil conveying device, the separation mechanism includes a fixed steel fixedly installed in the inner side of the housing and a receiving plate slidingly installed on the upper surface of the fixed steel, the front surface of the fixed steel is fixedly connected with a plurality of triangular columns, the lower surface of the receiving plate is provided with a triangular groove, and the triangular column is slidingly arranged in the inner side of the triangular groove; a folding plate is fixedly arranged at the rear end of the receiving plate, and a telescopic cylinder is arranged between the folding plate and the fixed steel.

[0013] The preceding shield construction spoil conveying device, the front surface of the folding plate is fixedly connected with a plug-in column, the rear surface of the fixed steel is fixedly connected with a sleeve, and the plug-in column is slidingly inserted into the rear end of the sleeve.

[0014] The preceding shield construction spoil conveying device, the inner side of the housing is provided with a delivery belt close to the lower side of the separation mechanism. Advantages

[0015] Compared with the prior art, the present application has the following advantages:

[0016] 1、The present application can form a protection for the surface of the conveying belt by means of the spoil, so as to prevent the gravel from damaging the belt surface or the inner structure, prolong the service life, and reduce the problem of spoil falling into the inner side of the housing, and prolong the maintenance cycle.

[0017] 2. During the use of this invention, when gravel and slag fall, the gravel is cushioned by the fine soil layer, thus protecting the conveyor belt. During conveying, the gravel is screened by several triangular prisms, causing the gravel in the gravel layer to be scraped off by the surface of the receiving plate. The fine soil layer is divided by the receiving plate into a scraped soil layer and a downstream soil layer. The downstream soil layer falls onto the surface of the conveyor belt, and through the combined action of the baffle plate and the conveyor belt, the fine soil layer is transported back to the surface of the conveyor belt to form a fine soil layer on its surface, which plays a protective role. This protects the surface and inner structure of the conveyor belt and prevents damage caused by the impact of gravel.

[0018] 3. In this invention, by controlling the extension and retraction of the telescopic cylinder, the receiving plate can be moved closer to or further away from the rear of the conveyor belt. This adjustment can change the amount of the downstream soil layer, thereby adjusting the thickness of the fine soil layer on the surface of the conveyor belt. This ensures that the buffering effect is appropriate and also prevents the fine soil layer from being too thick, which could cause difficulties in the transfer between the conveyor belts. It has high flexibility of use and can reasonably control the effect of buffering and protection.

[0019] 4. In this invention, when the conveyor belt moves, the blocking plate pushes the contact roller, causing the comb frame to move upward, which in turn causes the guide post to move upward and slide obliquely along the inner side of the inclined guide groove. At this time, under the guidance of the inclined guide groove, the movable plate will move horizontally and squeeze the return spring. When the blocking plate moves away from the contact roller, under the action of the return spring, the movable plate moves back to its original position. Thus, with each contact between the blocking plate and the contact roller, the movable plate will reciprocate, and the bristles will clean the surface of the conveyor belt back and forth, ensuring that the slag falls off and greatly reducing the adhesion of slag. In addition, the slag adhering to the surface of the conveyor belt will no longer have an impact, as it will mix into the fine soil layer and will not fall to the bottom of the shell, reducing the accumulation of soil inside the shell and extending the maintenance cycle. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of a tunnel boring machine excavation and soil transfer device according to the present invention;

[0022] Figure 2 This is a partial cross-sectional structural schematic diagram of a shield tunneling excavation soil transfer device according to the present invention;

[0023] Figure 3 This is a cross-sectional view of the conveyor belt and conveyor belt section of a shield tunneling excavation soil transfer device according to the present invention.

[0024] Figure 4 Figure 1 is a perspective view of a shield construction slag transporting device according to the present application; Figure 2 Figure 2 is an enlarged view of structure A in Figure 1;

[0025] Figure 5 Figure 3 is a schematic view of a separating mechanism of the shield construction slag transporting device according to the present application;

[0026] Figure 6 Figure 4 is a schematic view of a cleaning mechanism of the shield construction slag transporting device according to the present application; Figure 1

[0027] Figure 5 is a schematic view of a cleaning mechanism of the shield construction slag transporting device according to the present application; Figure 7 Figure 2 Figure 6 is an enlarged view of structure B in Figure 1;

[0028] Figure 8 Figure 7 Figure 7 is an enlarged view of structure C in Figure 1;

[0029] Figure 9 Figure 8 is a schematic view of a partial state of the shield construction slag transporting device according to the present application in use;

[0030] Figure 10 Figure 9 is a schematic view of a partial state of the shield construction slag transporting device according to the present application in use; Figure 9

[0031] Reference signs: 1 - shell, 2 - conveying belt, 3 - inner support frame, 4 - first rotating roller, 5 - second rotating roller, 6 - upper roller, 7 - middle roller, 8 - lower roller, 9 - side roller, 10 - conveying belt, 11 - blocking plate, 12 - motor, 13 - fixed horizontal plate, 14 - comb rack, 15 - collar, 16 - contact roller, 17 - ring groove, 18 - movable plate, 19 - inclined guide groove, 20 - guide column, 21 - connecting frame, 22 - receiving plate, 23 - folded plate, 24 - fixed steel, 25 - sleeve, 26 - insertion column, 27 - telescopic cylinder, 28 - triangular column, 29 - triangular groove, 30 - anti-edge falling device, 31 - bent head, 32 - T-shaped column, 33 - return spring, 34 - brush, 35 - fine soil layer, 36 - scraped soil layer, 37 - lower flow soil layer, 38 - gravel layer, 39 - falling area, 40 - sending belt. Embodiment

[0032] ​​​In order to make the personnel in the technical field better understand the scheme of the present application, the technical scheme in the embodiments of the present application will be clearly and completely described below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor should belong to the scope of protection of the present application.

[0033] It should be noted that the terms "first", "second", and the like in the specification and claims of the present application and the above-described drawings are used to distinguish similar objects, and do not necessarily have to be used to describe a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device including a series of steps or units does not have to be limited to only those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0034] In the present application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0035] In addition, in addition to being used to indicate the orientation or positional relationship, the above-mentioned partial terms can also be used to indicate other meanings, for example, the term "upper" can also be used to indicate a certain attachment relationship or connection relationship in some cases. For those skilled in the art, the specific meaning of these terms in the present application can be understood according to the specific circumstances.

[0036] In addition, the terms "mount", "set", "provided with", "connected", "connected", "sleeved" should be broadly understood. For example, it can be a fixed connection, a detachable connection, or a monolithic structure; it can be a mechanical connection, or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or internal communication between two devices, elements or components. For those skilled in the art, the specific meaning of the above-mentioned terms in the present application can be understood according to the specific circumstances.

[0037] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0038] Example. A device for transferring excavated soil during shield tunneling construction, such as... Figures 1-10 As shown, the system includes a housing 1, with a conveyor belt 2 and a conveyor belt 10 disposed inside the housing 1. The surface of the conveyor belt 10 is horizontally shaped like a "J" and is attached to the lower surface and front end of the conveyor belt 2. Several baffle plates 11 are protruding from the outer surface of the conveyor belt 10. A cleaning mechanism is disposed inside the housing 1 near the upper edge of the conveyor belt 10, and a separating mechanism is disposed inside the housing 1 near the rear of the conveyor belt 2. During the movement of the conveyor belt 10, the fine soil layer 35 on its surface is delivered to the upper surface of the conveyor belt 2; the separating mechanism removes the gravel layer 38 from above and divides the fine soil layer 35 into a scraped soil layer 36 and a downstream soil layer 37.

[0039] This invention can use slag and soil to form a protective layer on the surface of the conveyor belt 2, preventing gravel from damaging the belt surface or inner structure and extending its service life; it can also reduce the occurrence of slag and soil falling into the inner side of the shell 1 and extend the maintenance cycle.

[0040] like Figure 2 , Figure 3 As shown, a second roller 5 and a first roller 4 are respectively arranged on the inner side of the conveyor belt 2 near the front and rear. The two ends of the first roller 4 and the second roller 5 are rotatably connected to the housing 1. An inner support frame 3 is arranged on the inner side of the conveyor belt 2 near the first roller 4 and the second roller 5. The two ends of the inner support frame 3 are fixedly connected to the inner wall of the housing 1. The inner support frame 3 is used to increase the structural strength and prevent the surface from collapsing during the conveyor belt 2.

[0041] A side roller 9 is provided on the inner side of the conveyor belt 10 near the rear end. An upper roller 6, an intermediate roller 7, and a lower roller 8 are arranged sequentially from top to bottom on the inner side of the conveyor belt 10 and near the outer periphery of the second rotating roller 5. The two ends of the side roller 9, the upper roller 6, the intermediate roller 7, and the lower roller 8 are rotatably connected to the housing 1. The central shaft of the side roller 9 and the first rotating roller 4 are respectively connected to the output shaft of the motor 12. The motor 12 is fixedly installed on the side surface of the housing 1 and serves as the power source. The connection between the side roller 9, the upper roller 6, the intermediate roller 7, and the lower roller 8 and the conveyor belt 10 is the same as the connection between the synchronous belt and the synchronous pulley (the conventional belt tooth and groove structure is not shown in the figure).

[0042] like Figure 4 , Figure 6 , Figure 7 and Figure 8As shown, the cleaning mechanism comprises a movable plate 18 slidingly installed inside the shell 1 in the direction of both sides of the shell 1, the end of the movable plate 18 is provided with an elastic mechanism at the connection with the shell 1, the front surface of the movable plate 18 is fixedly installed with a brush 34, and the rear of the movable plate 18 is provided with a transmission mechanism which is driven by the blocking plate 11.

[0043] The elastic mechanism comprises a bent head 31 fixedly arranged at one end of the movable plate 18 and a T-shaped column 32 slidingly passing through the bent head 31, the end of the T-shaped column 32 is fixedly connected to the outer surface of the shell 1, the outer side of the T-shaped column 32 is sleeved with a return spring 33, and the other end of the movable plate 18 is provided with an anti-off edge 30 to prevent the movable plate 18 from being excessively translated and separated from the shell 1.

[0044] The transmission mechanism comprises a fixed horizontal plate 13 fixedly installed inside the shell 1 and close to the upper side of the conveying belt 10 and a comb rack 14 slidingly passing through the upper surface of the fixed horizontal plate 13, the lower end of the comb rack 14 is rotatably connected with a contact roller 16 close to the surface of the conveying belt 10, the rear edge of the comb rack 14 is fixedly connected with a plurality of connecting racks 21, the lower end of the connecting rack 21 is fixedly connected with a guide column 20, the rear surface of the movable plate 18 is provided with an inclined guide slot 19 at the position corresponding to the guide column 20, and the guide column 20 is slidingly clamped into the inner side of the inclined guide slot 19.

[0045] The lower end of the comb rack 14 is fixedly connected with a sleeve ring 15, the outer surface of the contact roller 16 is provided with a ring groove 17, the sleeve ring 15 is slidingly clamped into the inner side of the ring groove 17, and the contact roller 16 can avoid abrasion to the surface of the conveying belt 10.

[0046] As shown in the drawings, Figure 5 The separation mechanism comprises a fixed steel 24 fixedly installed inside the shell 1 and a bearing plate 22 slidingly installed on the upper surface of the fixed steel 24, the front surface of the fixed steel 24 is fixedly connected with a plurality of triangular columns 28, the lower surface of the bearing plate 22 is provided with triangular grooves 29, the triangular columns 28 are slidingly clamped into the inner side of the triangular grooves 29, the stability of the translation of the bearing plate 22 is improved, the rear end of the bearing plate 22 is fixedly provided with a folding plate 23, the folding plate 23 and the fixed steel 24 are provided with a telescopic cylinder 27, preferably a hydraulic cylinder, the front surface of the folding plate 23 is fixedly connected with a plug column 26, the rear surface of the fixed steel 24 is fixedly connected with a sleeve 25, and the plug column 26 is slidingly inserted into the rear end of the sleeve 25, so as to increase the stability of the movement of the bearing plate 22.

[0047] In actual use, a delivery belt 40 is arranged at the lower side of the separation mechanism inside the shell 1, and the delivery belt 40 is used for delivering the muck out of the shield tunneling machine.

[0048] The use process and working principle of the present application are shown in the drawings. Figure 9 、 Figure 10When the gravel and the slag fall, the falling area 39 is formed, and the gravel is received and buffered by the fine soil layer 35, thereby playing a role of protecting the conveying belt 2. During conveying, the gravel in the gravel layer 38 is drawn away through the surface of the receiving plate 22 after being separated by a plurality of triangular columns 28, and the fine soil layer 35 is separated by the receiving plate 22 to form the scraped soil layer 36 and the downstream soil layer 37. The downstream soil layer 37 falls onto the surface of the conveying belt 10, and the fine soil layer 35 is conveyed back to the surface of the conveying belt 2 through the cooperation of the blocking plate 11 and the conveying belt 10, so as to form the fine soil layer 35 on the surface of the conveying belt 2, thereby playing a role of protecting the surface of the conveying belt 2 and the inner structure, preventing the belt conveyor from being damaged due to the impact of the gravel. By controlling the extension and retraction of the telescopic cylinder 27, the receiving plate 22 is moved close to or away from the rear part of the conveying belt 2, and this adjustment can change the amount of the downstream soil layer 37, thereby achieving the effect of adjusting the thickness of the fine soil layer 35 on the surface of the conveying belt 2, ensuring that the buffering effect is appropriate, and also ensuring that the fine soil layer 35 will not be too thick to cause the problem of difficulty in transmission between the conveying belt 10 and the conveying belt 2, and the use flexibility is high, and the buffering and protection effect can be reasonably controlled. When the conveying belt 10 moves, the blocking plate 11 pushes and contacts the roller 16, so that the comb rack 14 moves upward, and then the guide column 20 moves upward and slides along the inner side of the inclined guide groove 19. At this time, under the guidance of the inclined guide groove 19, the movable plate 18 moves in translation and extrudes the return spring 33. When the blocking plate 11 moves away from the roller 16, the movable plate 18 moves back to the original position under the action of the return spring 33. In this way, with each contact between the blocking plate 11 and the roller 16, the movable plate 18 will move back and forth, and the brush 34 will clean the surface of the conveying belt 10 back and forth, thereby ensuring that the slag falls and reducing the adhesion of the slag to a large extent. In addition, the adhesion of the slag to the surface of the conveying belt 2 will no longer have an impact, and the slag will be mixed into the fine soil layer 35 and will not fall to the bottom surface of the shell 1. By reducing the accumulation of soil in the shell 1, the maintenance period is also prolonged.

[0049] The circuit and electronic components and modules are all prior art, and those skilled in the art can fully implement them. The above is only a preferred embodiment of the present application and is not used to limit the present application. Those skilled in the art can make various changes and modifications to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A slurry transportation device for a shield tunneling machine, characterized in that: The utility model provides a kind of automatic cleaning and separating device for paper tube, including shell (1), the inner side of shell (1) is provided with conveying belt (2) and conveying belt (10), conveying belt (10) surface is transversely arranged "J” type and is attached to the lower surface of conveying belt (2) with front end, the outer surface of conveying belt (10) is provided with several blocking plate (11), the inner side of shell (1) is close to the upper edge of conveying belt (10) and is provided with cleaning brush mechanism, the inner side of shell (1) is close to the rear of conveying belt (2) and is provided with separating mechanism; The separating mechanism includes a fixed steel (24) fixedly installed on the inner side of the shell (1) and a receiving plate (22) slidably installed on the upper surface of the fixed steel (24). The front surface of the fixed steel (24) is fixedly connected with a plurality of triangular columns (28). The lower surface of the receiving plate (22) is provided with a triangular groove (29). The triangular columns (28) are slidably inserted into the inner side of the triangular groove (29). The rear end of the receiving plate (22) is fixedly provided with a folding plate (23). The folding plate (23) and the fixed steel (24) are provided with a telescopic cylinder (27).

2. The slurry transportation device according to claim 1, wherein: The inner side of the conveying belt (2) is provided with a second rotating roller (5) and a first rotating roller (4) near the front and rear respectively. The two ends of the first rotating roller (4) and the second rotating roller (5) are rotatably connected with the shell (1) respectively. The inner side of the conveying belt (2) is provided with an inner support frame (3) between the first rotating roller (4) and the second rotating roller (5). The two ends of the inner support frame (3) are fixedly connected with the inner wall of the shell (1) respectively.

3. The earth removal device according to claim 2, wherein: The inner side of the conveying belt (10) is provided with a side roller (9) near the rear end. The inner side of the conveying belt (10) is provided with an upper roller (6), an intermediate roller (7), and a lower roller (8) from top to bottom near the periphery of the second rotating roller (5). The two ends of the side roller (9), the upper roller (6), the intermediate roller (7), and the lower roller (8) are rotatably connected with the shell (1) respectively. The central axis of the side roller (9) and the first rotating roller (4) is connected with the output shaft of a motor (12) respectively. The motor (12) is fixedly installed on the side surface of the shell (1).

4. The earth removal device of claim 1, wherein: The cleaning brush mechanism includes a movable plate (18) slidably installed in the shell (1) along the direction of both sides of the shell (1). The end of the movable plate (18) is provided with an elastic mechanism at the connection with the shell (1). The front surface of the movable plate (18) is fixedly installed with a brush (34). The rear of the movable plate (18) is provided with a transmission mechanism which is driven by the blocking plate (11) when it touches.

5. The earth removal device according to claim 4, characterized in that: The elastic mechanism includes a bent head (31) fixedly provided at one end of the movable plate (18) and a T-shaped column (32) slidably provided through the bent head (31). The end of the T-shaped column (32) is fixedly connected with the outer surface of the shell (1). The outer side of the T-shaped column (32) is provided with a return spring (33). The other end of the movable plate (18) is provided with an anti-edge (30).

6. The slurry transportation device of claim 4, wherein: The transmission mechanism comprises a fixed horizontal plate (13) fixedly installed on the inner side of the shell (1) and close to the top of the conveying belt (10) and a comb rack (14) sliding through the upper surface of the fixed horizontal plate (13), the lower end of the comb rack (14) is rotationally connected with a contact roller (16), the contact roller (16) is arranged close to the surface of the conveying belt (10), the rear edge of the comb rack (14) is fixedly connected with a plurality of connecting racks (21), the lower end of the connecting rack (21) is fixedly connected with a guide column (20), the rear surface of the movable plate (18) is provided with an inclined guide slot (19) at the position corresponding to each guide column (20), and the guide column (20) is slidingly clamped into the inner side of the inclined guide slot (19).

7. The earth removal device according to claim 6, characterized in that: The lower end of the comb rack (14) is fixedly connected with a sleeve ring (15), the outer surface of the contact roller (16) is provided with a ring groove (17), and the sleeve ring (15) is slidingly clamped into the inner side of the ring groove (17).

8. The earth removal device of claim 1, wherein: The front surface of the folding plate (23) is fixedly connected with a plug column (26), the rear surface of the fixed steel (24) is fixedly connected with a sleeve (25), and the plug column (26) is slidingly inserted into the rear end of the sleeve (25).

9. The earth removal device of claim 1, wherein: The inner side of the shell (1) is provided with a feeding belt (40) close to the lower part of the separating mechanism.

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