A mine tunnel mining and boring machine with protective function

Abstract

The present invention relates to the technical field of mine tunneling machines, and more specifically, to a mine tunneling machine with a protective function. The machine comprises a shield head, a propulsion device and a feeding device, wherein a discharge device is provided on both sides of the feeding device and connected to the shield head, a limit movable part fixed to the tunnel is provided on one side of the propulsion device, and a flipping part is provided on the feeding device between the propulsion device and the shield head, and a hollow clamping plate clamped on one side of the arch plate can increase the interception area of ​​the crushed stone, thereby playing a role in blocking the falling crushed stone, and then, a cleaning wedge is used to slide in the groove to clean the crushed stone inside the groove, so that the crushed stone overflows from both sides of the cleaning wedge, and when the cleaning wedge is completely collapsed into the cavity, the slide plate drives the cleaning wedge to move upward, so that the crushed stone on the cleaning wedge is wrapped by the clamping plate, thereby cleaning the crushed stone in the groove, and preventing gaps between the arch plates from affecting the later concrete pouring.

Description

Technical Field

[0001] The invention relates to the technical field of mine tunnel mining and heading machines, in particular to a mine tunnel mining and heading machine with a protective function. Background Art

[0002] With the rapid development of the national economy, my country's urbanization process is accelerating. In the future, for a long time, domestic urban subway tunnels, hydraulic tunnels, cross-river tunnels, railway tunnels, highway tunnels, municipal pipelines and other tunnel projects will require a large number of tunnel boring machines. Tunnel boring machines are highly intelligent and integrate mechanical, electrical, hydraulic, optical and computer technologies into one major technical equipment for tunnel construction.

[0003] During the tunnel boring machine excavation process, a circle of arch plates will be laid on the inner wall of the tunnel every time the tunnel boring machine excavates a certain distance, so that concrete can be poured on the outside of the arch plates and the inner wall of the tunnel can be supported with the help of the arch plates to ensure the safe operation of trains in the later stage.

[0004] It can be seen that when splicing arched plates, in order to increase the splicing speed and save space, the arched plates are usually arranged into multiple arc-shaped plate bodies, and are spliced ​​by plug-in matching at the head and tail ends of the plate bodies (that is, one end of the plate body bulges outward, and the other end is recessed inward to form a groove). Then, the single plate body is transported into the tunnel by the feeding device of the tunnel boring machine. However, during the splicing process, the groove of the plate body will appear to be inclined upward or downward. When the groove is in an inclined upward state, the vibration of the machine will cause the gravel on the inner wall of the tunnel to fall, and the fallen gravel will easily fall into the groove, resulting in the phenomenon that the plates are not tightly fitted during splicing, so that when concrete is poured on the outside of the plate body later, the concrete falls along the gap to the inside of the plate body, resulting in a waste of concrete. Summary of the invention

[0005] The object of the present invention is to provide a mine tunnel mining and heading machine with a protective function to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the present invention aims to provide a mine tunnel mining excavation machine with a protective function, including a shield head, a propulsion device and a feeding device, wherein discharge devices are arranged on both sides of the feeding device and are connected to the shield head, a limit movable part fixed to the tunnel is arranged on one side of the propulsion device, and a flipping part is arranged on the feeding device between the propulsion device and the shield head, and the flipping part is rotatably connected to the limit movable part through an auxiliary part, and a clamping part for clamping an arch plate is arranged at the bottom of a first hydraulic rod symmetrically arranged on the side of the flipping part, and the arch plate The head and tail ends of the plate are respectively provided with protrusions and grooves, the protruding end of the arch plate is kept flush with the groove of another arch plate, and the protruding end slides into the groove to realize the splicing of the arch plates. A plurality of arch plates are spliced ​​head to tail to form an annular plate to support the inner wall of the tunnel. The first hydraulic rod pushes the clamping part and the arch plate outward, and with the assistance of the auxiliary parts, the cleaning part provided at the bottom of the clamping part slides in the groove of the arch plate to realize the cleaning of the gravel inside the groove, and the clamping parts on both sides cooperate with the arch plates to protect the gravel falling inside the tunnel;

[0007] When the cleaning part is about to contact the arched plate on one side, the ejection part in the clamping part is pressed against the side of the arched plate, so that the slide plate slidably connected to the cleaning part and the cleaning part move upward, and the cleaning part pushes the crushed stones to expand and contract inside the clamping part, so as to limit the crushed stones to be cleaned;

[0008] When the clamping part slides on the groove, the crushed stones on both sides of the groove of the arched plate are scraped off to make the arched plates on both sides fit together.

[0009] As a further improvement of the present technical solution, the flipping part includes a flipping plate and a bottom plate. The bottom of the first hydraulic rod provided on the side of the flipping plate is fixedly connected to the bottom plate. The gear plate fixedly connected to the inner ring of the flipping plate is meshed with the gear coaxially connected to the driving motor. The driving motor is fixed at the end of the auxiliary part away from the limiting moving part.

[0010] As a further improvement of the present technical solution, the driving motor drives the flip plate to rotate through gears and toothed discs, so that the raised end of the arched plate clamped by the clamping part remains flush with the groove of the other arched plate, so as to cooperate with the auxiliary part to pull the toothed disc to make the raised end slide into the groove to achieve splicing.

[0011] As a further improvement of the present technical solution, the clamping part is composed of a second hydraulic rod and a clamping plate, the second hydraulic rod is symmetrically fixed to the bottom of the base plate, and the end of the second hydraulic rod is fixedly connected to the clamping plate, the clamping plates on both sides are hollow and solid respectively, the outer edge of the solid clamping plate protrudes from the hollow clamping plate, and anti-slip pads are provided on the inner sides of the arch plates clamped by the clamping plates on both sides.

[0012] As a further improvement of the technical solution, a sliding plate is slidably connected to the hollow splint on one side, and a second spring is mounted on the sliding rod fixedly connected to one end of the sliding plate away from the cleaning part. The other end of the second spring away from the sliding plate is connected to a limit block fixed in the cavity of the hollow splint, and the limit block is slidably connected to the sliding rod.

[0013] As a further improvement of the present technical solution, the ejection part includes a push rod and an extrusion block fixedly connected to the push rod, the push rod is slidably connected to a splint, and a stop block is coaxially connected to the push rod in the cavity, the stop block is used to keep the extrusion block in contact with the circular plate at the end of the slide rod, the contact portion between the extrusion block and the circular plate is arc-shaped, the push rod is in contact with an arched plate on one side, the push rod pushes the extrusion block to cause sliding between the slide rod and the limit block, so that the cleaning part at the bottom of the slide plate shrinks into the splint, thereby wrapping the cleaned gravel.

[0014] As a further improvement of the present technical solution, the cleaning part includes a cleaning wedge slidably connected to a slide plate, and one side of the cleaning wedge that is in contact with the slide plate is rotatably connected to an auxiliary rod. The slider rotatably connected to the auxiliary rod slides in a slide groove at the bottom of the slide plate, and the ends of the cross bar passing through the sliders on both sides are both provided with a first spring, and the first spring resists the slider.

[0015] As a further improvement of the technical solution, when the cleaning wedge is fully extended, the cleaning wedge exceeds the extended length of the push rod in the vertical direction, so that after the cleaning wedge contacts the arch plate on one side, the push rod contacts the arch plate to achieve the cleaning of the gravel.

[0016] As a further improvement of the technical solution, in the process that the push rod is gradually squeezed back into the cavity, the height of the cleaning wedge increases until the cleaning wedge is completely collapsed into the cavity of the splint, and the splint wraps the gravel.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. In the mining tunnel boring machine with protective function, the interception area of ​​​​the crushed stone can be increased by clamping the hollow clamping plate on one side of the arch plate, so as to block the falling crushed stone, and then, the cleaning wedge is used to slide in the groove to clean the crushed stone inside the groove, so that the crushed stone overflows from both sides of the cleaning wedge, and when the cleaning wedge is completely collapsed into the cavity, the slide plate drives the cleaning wedge to move upward, so that the crushed stone on the cleaning wedge is wrapped by the clamping plate, so as to clean the crushed stone in the groove, prevent the existence of gaps between the arch plates, and affect the later pouring of concrete.

[0019] 2. In the mine tunnel mining and boring machine with protective function, the splint slides on the side of the groove to clean up the gravel that falls on the side and pushes the gravel out from the side. When the cleaning wedge is completely collapsed into the cavity, the splint wraps the gravel on the cleaning wedge to prevent the gravel from falling into the groove again when it is moved out of the groove, thereby affecting the splicing efficiency of the arch plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 It is a schematic diagram of the structure of the shield head, propulsion device, feeding device and turning part of the present invention;

[0022] Figure 3 It is a schematic diagram of the exploded structure of the feeding device and the clamping part of the present invention;

[0023] Figure 4 It is a schematic diagram of the exploded structure of the driving motor, gear and toothed disc of the present invention;

[0024] Figure 5 It is a left view of the clamping part, the bottom plate and the first hydraulic rod structure of the present invention;

[0025] Figure 6 It is a schematic diagram of the explosion structure of the clamping parts on both sides of the present invention;

[0026] Figure 7 It is a schematic diagram of the enlarged structure of point A of the present invention;

[0027] Figure 8 It is a schematic diagram of the enlarged structure of point B of the present invention;

[0028] Fig. 9 It is a schematic diagram of the structure of the clamping plate, the sliding plate and the cleaning wedge of the present invention;

[0029] Fig.10 It is a schematic diagram of the structure of the second hydraulic rod, clamping plate and cleaning wedge block of the present invention.

[0030] The meaning of each number in the figure is:

[0031] 100, shield head; 101, propulsion device; 102, feeding device; 103, limit moving part; 104, auxiliary part;

[0032] 200, turning part; 201, turning plate; 202, bottom plate; 203, first hydraulic rod; 204, driving motor; 205, gear; 206, gear plate;

[0033] 300, clamping part; 301, second hydraulic rod; 302, clamping plate;

[0034] 310, slide plate; 311, slide bar; 312, second spring; 313, limit block; 314, round plate;

[0035] 400, cleaning part; 401, cleaning wedge; 402, auxiliary rod; 403, cross bar; 404, first spring;

[0036] 500, ejector; 501, ejector rod; 502, extrusion block. DETAILED DESCRIPTION

[0037] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations 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 referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0039] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0040] like Figure 1 , Figure 2 , Figure 3 and Figure 7As shown, it includes a shield head 100, a propulsion device 101 and a feeding device 102. Discharging devices are provided on both sides of the feeding device 102 and are connected to the shield head 100. A limit moving part 103 fixed to the tunnel is provided on one side of the propulsion device 101. A flipping part 200 is provided on the feeding device 102 between the propulsion device 101 and the shield head 100. The flipping part 200 is rotatably connected to the limit moving part 103 through an auxiliary part 104. The bottom of the first hydraulic rod 203 symmetrically provided on the side of the flipping part 200 is provided with a first hydraulic rod 203 for turning the arched The clamping part 300 of the plate clamping has protrusions and grooves at the head and tail ends of the arch plate respectively. The protruding end of the arch plate is kept flush with the groove of another arch plate, and the protruding end slides into the groove to realize the splicing of the arch plates. A plurality of arch plates are spliced ​​head to tail to form an annular plate to support the inner wall of the tunnel. The first hydraulic rod 203 pushes the clamping part 300 and the arch plate outward, and with the assistance of the auxiliary part 104, the cleaning part 400 provided at the bottom of the clamping part 300 slides in the groove of the arch plate to realize the cleaning of the gravel inside the groove.

[0041] Secondly, when the clamping part 300 slides on the groove, the gravel on both sides of the groove of the arch plate is scraped off so that the arch plates on both sides can fit tightly.

[0042] Specifically in use: the device is the same as the existing shield machine. After the shield head 100 has excavated a certain distance in the tunnel, the propulsion device 101 will retract backwards to leave enough working space for the flipping part 200, and then the feeding device 102 will be used to transport the arch plate to the clamping position, and the first hydraulic rod 203 will push the clamping part 300 down to clamp and fix the arch plate. Then, with the assistance of the flipping part 200, the arch plate is rotated to the splicing position, and finally the cleaning part 400 and the arch plate are made to slide in the groove through the auxiliary part 104 to clean the gravel in the groove. At the same time, the clamping parts 300 on both sides of the arch plate can cooperate with the arch plate to protect the gravel falling into the tunnel, prevent the gravel from falling into the groove and affecting the splicing of the arch plate. When the splicing is completed, the limit moving part 103 moves a certain distance in the excavation direction, and the shield head 100 is pushed to excavate again through the propulsion device 101.

[0043] It can be seen that after the arch plate is clamped by the clamping part 300, the clamped arch plate is rotated to the splicing position by cooperating with the flipping part 200 for splicing, so as to form support inside the excavated tunnel. Moreover, since there is still a certain gap between the arch plate and the inner wall of the tunnel, the gap can be filled by injecting concrete at a later stage. After the concrete solidifies, the inner wall of the tunnel can be supported by cooperating with the arch plate to ensure the safety of train driving at a later stage.

[0044] Therefore, based on the above structure, Figure 3 Cooperate Figure 4The specific structure of the flipping part 200 is further disclosed. The flipping part 200 includes a flipping plate 201 and a bottom plate 202. When the arched plate on the feeding device 102 is transported to the clamping position, at this time, the first hydraulic rod 203 pushes the bottom fixedly connected bottom plate 202 and the clamping part 300 arranged at the bottom of the bottom plate 202 to move downward, and the arched plate on the feeding device 102 is clamped by the clamping parts 300 on both sides to prevent the arched plate from loosening during splicing, which affects the splicing efficiency.

[0045] Next, in order to save time for splicing, protrusions and grooves are respectively provided at the head and tail ends of the arched plate, so that a plurality of arched plates can be spliced ​​head to tail to form an annular plate to support the inner wall of the tunnel.

[0046] Therefore, when splicing, the toothed disc 206 fixedly connected to the inner ring of the flip plate 201 meshes with the gear 205 coaxially connected to the drive motor 204. The drive motor 204 is fixed to the end of the auxiliary member 104 away from the limit moving member 103. The drive motor 204 drives the gear 205 to rotate, so that the toothed disc 206 and the flip plate 201 rotate synchronously, thereby realizing the flipping of the clamped arched plate, and under the action of the auxiliary member 104, the clamped arched plate is pushed to the side of the arched plate at the next position (refer to Fig.10 , and at this time the raised end of the arched plate is kept flush with the groove of another arched plate, so as to cooperate with the auxiliary part 104 to pull the toothed disc 206 to slide the raised end into the groove to realize the splicing of the arched plates).

[0047] It should be noted that the laid arch plate is on the outer circle of the entire feeding device 102 so that the arch plate can provide support for the feeding device 102 in the later stage, and when the limit moving part 103 moves forward, the laid arch plate can also be used to block the limit moving part 103, so that the limit moving part 103 can push the shield head 100 forward to excavate.

[0048] Next, through Figure 5 and Figure 6The specific structure of the clamping part 300 is disclosed. The clamping part 300 is composed of a second hydraulic rod 301 and a clamping plate 302. The second hydraulic rod 301 is fixed to the bottom of the bottom plate 202 in a symmetrical manner, and the end of the second hydraulic rod 301 is fixedly connected to the clamping plate 302. The clamping plates 302 on both sides are hollow and solid respectively. The outer edge of the solid clamping plate 302 protrudes from the hollow clamping plate 302. Therefore, when the arch plate is clamped and fixed, the second hydraulic rod 301 is used to push The clamping plates 302 expand to both sides so that the distance between the clamping plates 302 on both sides can accommodate the arched plate, and cooperate with the first hydraulic rod 203 to push the bottom plate 202 downward so that the clamping plates 302 on both sides are aligned with the arched plate in the horizontal direction, and then the second hydraulic rod 301 pulls the clamping plates 302 to clamp the arched plate. Secondly, in order to prevent the clamped arched plate from loosening, an anti-slip pad is provided on the inner side of the clamping plates 302 that clamp the arched plate to increase the friction between the arched plate and the clamping plates 302.

[0049] In addition, the clamping plates 302 on both sides are clamped on both sides of the arch plate, and cooperate with the arch plate to increase the protection area for falling gravel, preventing the gravel from falling into the groove and affecting the splicing efficiency of the arch plate.

[0050] The above is embodiment 1 of the present invention. Figure 7-Figure 9 Embodiment 2 of the present invention is shown.

[0051] As the cleaning part 400 moves in the groove, the clamping plate 302 sticks to the two sides of the groove of the arch plate, the clamping plate 302 cleans the gravel on the side of the groove, and the cleaning part 400 scrapes the gravel inside the groove, and the excess gravel overflows from the cleaning part 400 to both sides. Then, when the cleaning part 400 is about to contact the arch plate on the side, the ejection part 500 in the clamping part 300 is squeezed with the side of the arch plate, so that the slide plate 310 slidably connected to the cleaning part 400 and the cleaning part 400 move upward, and the cleaning part 400 pushes the gravel to expand and contract inside the clamping part 300, so as to limit the cleaned gravel.

[0052] In order to enable the ejection part 500 to squeeze and push the slide plate 310 to slide in the clamping plate 302, the slide plate 310 is slidably connected in the hollow clamping plate 302, and a second spring 312 is sleeved on the slide bar 311 fixedly connected to one end of the slide plate 310 away from the cleaning part 400, and the other end of the second spring 312 away from the slide plate 310 is connected to a limit block 313 fixed in the cavity in the hollow clamping plate 302, and the limit block 313 is slidably connected to the slide bar 311, so that the ejection part 500 can be used to squeeze the circular plate 314 set at the end of the slide bar 311, so that the slide plate 310 drives the cleaning part 400 at the bottom to shrink into the clamping plate 302, so as to wrap the gravel cleaned on the cleaning part 400, and prevent the gravel from falling into the groove again and affecting the splicing of the arch plate.

[0053] Therefore, based on the above structure, the specific structure of the ejection part 500 is disclosed. The ejection part 500 includes a ejector rod 501 and an extrusion block 502 fixedly connected to the ejector rod 501. The ejector rod 501 is slidably connected to the clamping plate 302, and a stopper is coaxially connected to the ejector rod 501 in the cavity. The stopper is used to keep the extrusion block 502 in contact with the circular plate 314 at the end of the sliding rod 311 to prevent the extrusion block 502 from detaching from the circular plate 314.

[0054] Because the contact portion between the extrusion block 502 and the circular plate 314 is in an arc shape, when the push rod 501 contacts the arched plate on one side, the push rod 501 pushes the extrusion block 502 to cause sliding between the slide bar 311 and the limit block 313, so that the cleaning portion 400 at the bottom of the slide plate 310 shrinks into the clamping plate 302, thereby wrapping the cleaned gravel. During this process, the second spring 312 is compressed. When the push rod 501 is completely squeezed into the cavity, that is, the clamping plate 302 fits with the arched plate at this time, the cleaning portion 400 is completely shrunk into the clamping plate 302, and the bottom of the cleaning portion 400 is flush with the side of the groove. At this time, the first hydraulic rod 203 can be used again to retract the bottom plate 202 (cooperating with the first hydraulic rod 203). Figure 3 As shown), the hollow clamping plate 302 is completely separated from the arch plate, and the cleaning portion 400 is pushed downward in the opposite direction under the elastic action of the second spring 312, so that the gravel wrapped in the clamping plate 302 is released, while the protruding edge of the solid clamping plate 302 on the other side abuts against the arch plate, and the arch plate can continue to be pushed to move by the auxiliary part 104 so that the arch plates on both sides fit together.

[0055] The specific working process of cleaning the gravel by the cleaning unit 400 is as follows:

[0056] First, the specific structure of the cleaning part 400 is disclosed. The cleaning part 400 includes a cleaning wedge 401 which is slidably connected to the slide plate 310. The side of the cleaning wedge 401 that is in contact with the slide plate 310 is rotatably connected to the auxiliary rod 402. The slider rotatably connected to the auxiliary rod 402 slides in the slide groove at the bottom of the slide plate 310, and the ends of the cross bar 403 passing through the sliders on both sides are both covered with a first spring 404, which resists the slider.

[0057] Therefore, during the sliding process of the cleaning wedge 401 in the groove, the cleaning wedge 401 will collapse to one side due to the resistance of the gravel, that is, the cleaning wedge 401 pushes the auxiliary rods 402 rotatably connected on both sides to squeeze the first spring 404 sleeved on the cross bar 403 outward. When the cleaning wedge 401 is completely retracted into the cavity, the auxiliary rods 402 on both sides are completely embedded in the interior of the cleaning wedge 401. At this time, the cleaning wedge 401 is in contact with the bottom of the slide plate 310. Then, after the clamping plate 302 at this location is released from one side of the arch plate, the slide plate 310 is pushed out in the opposite direction under the elastic action of the second spring 312, and the gravel is released from the cavity. The cleaning wedge 401 returns to its initial state again under the push of the first spring 404 and the auxiliary rod 402 for the next use.

[0058] In addition, when the cleaning wedge 401 is in a natural state, the cleaning wedge 401 is fully extended, and the cleaning wedge 401 exceeds the extended length of the push rod 501 in the vertical direction, so that after the cleaning wedge 401 contacts the arch plate on the side, the push rod 501 contacts the arch plate again, so that in the process of the push rod 501 being gradually squeezed back into the cavity, the height of the cleaning wedge 401 rises until the cleaning wedge 401 is completely collapsed into the cavity of the splint 302, and the splint 302 wraps the gravel, thereby cleaning the gravel in the groove, making the arch plates fit together, to prevent the concrete from falling along the gap to the inner side of the arch plate when pouring concrete on the outer side of the arch plate later, causing waste.

[0059] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A mine tunnel excavation machine with a protective function, comprising a shield head (100), a propulsion device (101) and a feeding device (102), wherein discharge devices are provided on both sides of the feeding device (102) and are connected to the shield head (100), a limit moving part (103) fixed to the tunnel is provided on one side of the propulsion device (101), and a turning part (200) is provided on the feeding device (102) between the propulsion device (101) and the shield head (100), wherein the turning part (200) is rotatably connected to the limit moving part (103) via an auxiliary part (104), and characterized in that: A clamping portion (300) for clamping an arch plate is provided at the bottom of a first hydraulic rod (203) symmetrically arranged on the side of the flipping portion (200); a protrusion and a groove are respectively arranged at the head and tail ends of the arch plate; the protrusion of the arch plate is kept flush with the groove of another arch plate; the protrusion slides into the groove to achieve the splicing of the arch plates; a plurality of arch plates are spliced ​​head to tail to form an annular plate to support the inner wall of the tunnel; the first hydraulic rod (203) pushes the clamping portion (300) and the arch plate outwards; and with the assistance of an auxiliary component (104), a cleaning portion (400) provided at the bottom of the clamping portion (300) slides in the groove of the arch plate to achieve the cleaning of gravel inside the groove; and the clamping portions (300) on both sides cooperate with the arch plates to protect gravel falling inside the tunnel; When the cleaning portion (400) is about to contact the arched plate on the side, the ejection portion (500) in the clamping portion (300) is pressed against the side of the arched plate, so that the slide plate (310) slidably connected to the cleaning portion (400) and the cleaning portion (400) move upward, and the cleaning portion (400) pushes the crushed stones to expand and contract inside the clamping portion (300), thereby limiting the crushed stones to be cleaned; When the clamping part (300) slides on the groove, the crushed stones on both sides of the groove of the arched plate are scraped off, so that the arched plates on both sides fit together; The clamping portion (300) is composed of a second hydraulic rod (301) and a clamping plate (302), wherein the second hydraulic rod (301) is fixed to the bottom of the base plate (202) in a symmetrical manner, and the end of the second hydraulic rod (301) is fixedly connected to the clamping plate (302), the clamping plates (302) on both sides are respectively hollow and solid, the outer edge of the solid clamping plate (302) protrudes from the hollow clamping plate (302), and anti-slip pads are provided on the inner sides of the clamping plates (302) on both sides for clamping the arched plate; A slide plate (310) is slidably connected inside the hollow clamping plate (302) on one side, and a second spring (312) is sleeved on a slide bar (311) fixedly connected to one end of the slide plate (310) away from the cleaning portion (400), and the other end of the second spring (312) away from the slide plate (310) abuts against a limit block (313) fixed in the cavity of the slide plate (310), and the limit block (313) is slidably connected to the slide bar (311); The ejection portion (500) comprises a push rod (501) and an extrusion block (502) fixedly connected to the push rod (501); the push rod (501) is slidably connected to the clamping plate (302), and a stopper is coaxially connected to the push rod (501) in the cavity, and the stopper is used to keep the extrusion block (502) in contact with the circular plate (314) at the end of the sliding rod (311); the contact portion between the extrusion block (502) and the circular plate (314) is arc-shaped, and the push rod (501) is in contact with the arched plate on one side. The push rod (501) pushes the extrusion block (502) to cause sliding between the sliding rod (311) and the limit block (313), so that the cleaning portion (400) at the bottom of the slide plate (310) is retracted into the clamping plate (302), thereby wrapping the cleaned gravel; The cleaning portion (400) comprises a cleaning wedge (401) slidably connected to the slide plate (310); the cleaning wedge (401) is rotatably connected to the auxiliary rod (402) at one side thereof abutting against the slide plate (310); the slide plate rotatably connected to the auxiliary rod (402) slides in a slide groove at the bottom of the slide plate (310); and the ends of the cross bar (403) passing through the slide plates on both sides are both sleeved with a first spring (404), and the first spring (404) abuts against the slide plate.

2. The mine tunnel mining and boring machine with protective function according to claim 1, characterized in that: The flipping part (200) comprises a flipping plate (201) and a bottom plate (202); a first hydraulic rod (203) provided on the side of the flipping plate (201) is fixedly connected to the bottom plate (202); a toothed disc (206) fixedly connected to the inner ring of the flipping plate (201) meshes with a gear (205) coaxially connected to a drive motor (204); and the drive motor (204) is fixed to an end of the auxiliary component (104) away from the limit moving component (103).

3. The mine tunnel mining and boring machine with protective function according to claim 2, characterized in that: The driving motor (204) drives the flip plate (201) to rotate via the gear (205) and the toothed disc (206), so that the raised end of the arched plate clamped by the clamping portion (300) remains flush with the groove of the other arched plate, so that the auxiliary component (104) pulls the toothed disc (206) to slide the raised end into the groove, thereby achieving splicing.

4. The mine tunnel mining and boring machine with protective function according to claim 1, characterized in that: When the cleaning wedge (401) is fully extended, the cleaning wedge (401) exceeds the extended length of the push rod (501) in the vertical direction, so that after the cleaning wedge (401) contacts the arched plate on one side, the push rod (501) contacts the arched plate again to achieve the cleaning of the gravel.

5. The mine tunnel mining and boring machine with protective function according to claim 1, characterized in that: As the push rod (501) is gradually squeezed back into the cavity, the height of the cleaning wedge (401) rises until the cleaning wedge (401) is completely collapsed into the cavity of the clamping plate (302), and the clamping plate (302) wraps the gravel.

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