Slagging-off device for tunnel section

Abstract

The invention belongs to the technical field of slagging-off devices for tunnel sections, and particularly relates to a slagging-off device for tunnel sections, which comprises a vehicle body and a conveying mechanism, a mechanical arm is movably mounted on the vehicle body, a bucket is arranged at the end of the mechanical arm, the conveying mechanism comprises a conveying channel, the conveying channel is fixedly mounted on the vehicle body, and a feeding port is formed in the end of the conveying channel. The two groups of conveying shafts are rotatably mounted at two ends in the conveying channel, the chain wheels are fixedly sleeved on the conveying shafts, the chain is arranged in the conveying channel, the two groups of chain wheels are meshed with the chain, a plurality of groups of fixing pieces are mounted on the chain at equal intervals, and push plates are fixedly mounted on the fixing pieces; in the continuous circular motion process of the multiple sets of push plates, the multiple sets of push plates not only achieve conveying of broken stone residues, but also can prevent broken stone from rolling down, and the conveying efficiency of the broken stone residues is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of slag scraping devices for tunnel sections, in particular to a slag scraping device for tunnel sections. Background Art

[0002] In the process of clearing debris, the scraper can also transport the debris to the slag truck, which greatly improves the efficiency of debris handling and enables it to be widely used in coal mining, metal mine development, tunnel construction and other fields. In these places, the scraper is mainly responsible for clearing debris in narrow passages and assisting transportation.

[0003] The patent with publication number CN218346295U discloses a hydraulic scraper with a rotatable bucket, a vehicle body, and a support frame fixedly installed on the vehicle body. A first movable shaft is fixedly connected to the front of the support frame. A first mechanical arm is clamped on the outside of the first movable shaft. The first mechanical arm is clamped with the second movable shaft through a first hydraulic rod. A connector is clamped on the outside of the second movable shaft. This solution allows the staff to adjust the bucket position at will through the setting of the vehicle body, the support frame, the first movable shaft, the first mechanical arm, the first hydraulic rod, the bucket and the bucket teeth, thereby improving the practicability of the device. The bucket teeth protect the bucket and reduce the frequency of bucket replacement.

[0004] In the above scheme, the residue is scraped to the loading port of the transport channel by a bucket, and then the residue at the loading port is transported away by a transmission belt, so that the residue is discharged to the slag transport vehicle through a discharge port. A large amount of crushed stone residue will be generated during the construction of the tunnel section. Since the slope at the loading port is large, the bucket scrapes the crushed stone onto the transmission belt, and part of the crushed stone will roll down from the transmission belt, reducing the transportation efficiency of the transmission belt for the residue. For this reason, the present invention provides a slag scraping device for a tunnel section. Summary of the invention

[0005] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0006] The technical solution adopted by the present invention to solve the technical problem is as follows: a slag removal device for a tunnel section described in the present invention comprises a vehicle body and a conveying mechanism, a mechanical arm is movably mounted on the vehicle body, a bucket is arranged at the end of the mechanical arm, the conveying mechanism comprises a transport channel, the transport channel is fixedly mounted on the vehicle body, a feed port is arranged at the end of the transport channel, two groups of conveying shafts rotatably mounted at both ends of the transport channel, sprockets fixedly mounted on the conveying shafts, a chain arranged in the transport channel, the two groups of sprockets are meshed with the chain, a plurality of groups of fixing parts are equidistantly mounted on the chain, and a push plate is fixedly mounted on the fixing parts;

[0007] During the continuous circular motion of several groups of push plates, the several groups of push plates not only achieve the transportation of gravel residues, but also the push plates can block the gravel from rolling down, improving the transportation efficiency of the gravel residues.

[0008] Preferably, the conveying mechanism further includes a first synchronous gear, the first synchronous gear is fixedly installed at the end of a group of transmission shafts, the drum brush is rotatably installed on the transportation channel, a second synchronous gear is fixedly sleeved at one end of the drum brush, and the second synchronous gear and the first synchronous gear are both engaged with the synchronous toothed belt;

[0009] The rotating drum brush rubs against the passing push plate, so that the soil attached to the push plate is cleaned by the drum brush, ensuring the cleaning efficiency of the push plate for the residues.

[0010] Preferably, the fixing member includes a U-shaped clamping sleeve, the U-shaped clamping sleeve is fixedly installed on the chain, fixedly installed inside the fixing tube in the U-shaped clamping sleeve, a rotating connecting column rotatably installed inside the fixing tube, one end of the connecting column is fixedly connected to the push plate, the other end of the connecting column is fixedly connected to two groups of connecting rods, two groups of connecting rods are respectively inserted with movable heads, springs sleeved on the two groups of connecting rods, the movable heads are slidably connected to the inner cavity of the fixing tube, a roller is rotatably installed at the end of the movable head, an avoidance groove is opened on the lower end surface of the transportation channel, a pushing inclined surface for pushing the roller is arranged at one end of the avoidance groove, two groups of spiral grooves are opened on the fixing tube, and two groups of pin shafts are arranged on the outer ring of the movable head, and the two groups of pin shafts are respectively located in the two groups of spiral grooves;

[0011] After the push plate rotates by a certain degree, it is perpendicular to the drum brush. Since the thickness of the push plate is relatively thin, the push plate can easily pass through the fiber filaments on the drum brush and will not cause destructive damage to the fiber filaments. At the same time, the drum brush can clean the soil attached to the push plate, not only improving the service life of the drum brush, but also making the volume of the drum brush smaller, not only making the device structure more compact, but also reducing the manufacturing cost of the device.

[0012] Preferably, the push plate includes a plate body, one end of the connecting column is fixedly connected to the plate body, a telescopic claw movably installed inside the plate body, two groups of U-shaped elastic strips symmetrically arranged inside the plate body, one end of the U-shaped elastic strip is fixedly connected to the inner wall of the telescopic claw, the other end of the U-shaped elastic strip is fixedly connected to the inner wall of the plate body, guiding grooves are opened on both sides inside the transportation channel, bearing shafts are arranged at both ends of the telescopic claw, and the guiding groove is composed of a U-shaped groove, an inclined groove, a straight groove and an arc groove;

[0013] Under the guidance of the arc groove, the telescopic claw will completely retract into the plate body. Under the action of the rebounding force of the U-shaped elastic strip, the telescopic claw is kept inside the plate body, reducing the width of the entire push plate.

[0014] The beneficial effects of the present invention are as follows:

[0015] 1. When several groups of push plates are continuously moving in a circular motion, they can not only transport the crushed stone residue, but also stop the crushed stone from rolling down, thereby improving the transport efficiency of the crushed stone residue.

[0016] 2. When the push plate moves obliquely upward along the transport channel, the roller on the fixed part will roll along the inner wall of the transport channel; when the push plate moves obliquely downward along the transport channel, the roller will roll into the avoidance groove opened on the lower end surface of the transport channel, and under the action of the spring rebound force, the movable head will move toward the roller along the two sets of connecting rods, and at the same time, the movable head will drive the two sets of pins to slide along the two sets of spiral grooves respectively. Under the guidance of the spiral grooves, the movable head together with the two sets of connecting rods, the screw-on column and the push plate will rotate to a certain degree. After the rotation, the push plate will be perpendicular to the drum brush. Since the push plate is thin, the push plate can easily pass through the fiber filaments on the drum brush without causing destructive damage to the fiber filaments. At the same time, the drum brush can clean up the mud attached to the push plate, which not only improves the service life of the drum brush, but also reduces the size of the drum brush, which not only makes the device structure more compact, but also reduces the manufacturing cost of the device.

[0017] 3. When the push plate moves obliquely upward along the transport channel, the two sets of receiving shafts at both ends of the push plate will slide along the corresponding linear grooves. When the push plate changes from moving obliquely upward to moving obliquely downward, the receiving shafts will slide from the linear grooves to the arc grooves. Under the guidance of the arc grooves, the telescopic claws will be completely retracted into the plate body. Under the rebound force of the U-shaped elastic strip, the telescopic claws will be maintained in the plate body, reducing the width of the entire push plate. When the roller brush is cleaning the push plate, the length of the fiber filaments on the roller brush can be shortened, thereby reducing the volume of the entire roller brush again. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described below in conjunction with the accompanying drawings.

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0020] Figure 2 It is a cross-sectional schematic diagram of the conveying mechanism of the present invention.

[0021] Figure 3 It is a schematic diagram of the conveying mechanism of the present invention from another perspective.

[0022] Figure 4 It is a schematic diagram of the chain, fixing part and push plate assembly of the present invention.

[0023] Figure 5 It is a cross-sectional schematic diagram of the fixing member of the present invention.

[0024] Figure 6 It is a schematic diagram of the combination of the fixed tube and the movable head of the present invention.

[0025] Figure 7 Schematic diagram of the combination of the transportation channel, fixing member, push plate and drum brush of the present invention.

[0026] Figure 8 Schematic diagram of the combination of the rotary connection column and the sectional push plate of the present invention.

[0027] Fig. 9 Side view of the combination of the sectional transportation channel, chain, fixing member, push plate and drum brush of the present invention.

[0028] In the figure: 1, vehicle body; 2, robotic arm; 3, bucket; 4, conveying mechanism; 401, transportation channel; 4011, clearance groove; 4012, top push inclined surface; 4013, guiding groove; 31, U-shaped groove; 32, inclined groove; 33, straight groove; 34, arc groove; 402, feed inlet; 403, transmission shaft; 404, sprocket; 405, chain; 406, fixing member; 407, push plate; 408, first synchronous gear; 409, synchronous toothed belt; 410, second synchronous gear; 411, drum brush; 4061, C-shaped retaining sleeve; 4062, fixed pipe; 621, spiral groove; 4063, rotary connection column; 4064, connecting rod; 4065, movable head; 651, pin shaft; 4066, roller; 4067, spring; 4071, plate body; 4072, telescopic claw; 4073, U-shaped elastic strip; 4074, receiving shaft. Detailed implementation manners

[0029] In order to make the technical means, creative features, achieved purposes and functions of the present invention easy to understand, the present invention will be further described below in conjunction with specific implementation manners.

[0030] Embodiment 1

[0031] As Figure 1 shown in Figure 2 A mucking device for a tunnel section according to an embodiment of the present invention includes a vehicle body 1 and a conveying mechanism 4. A robotic arm 2 is movably installed on the vehicle body 1. A bucket 3 is provided at the end of the robotic arm 2. The conveying mechanism 4 includes a transportation channel 401. The transportation channel 401 is fixedly installed on the vehicle body 1. A feed inlet 402 is provided at the end of the transportation channel 401. Two groups of transmission shafts 403 are rotatably installed at both ends inside the transportation channel 401. Sprockets 404 are fixedly sleeved on the transmission shafts 403. A chain 405 is provided inside the transportation channel 401. Both groups of sprockets 404 are engaged with the chain 405. A number of groups of fixing members 406 are equidistantly installed on the chain 405. A push plate 407 is fixedly installed on the fixing member 406.

[0032] Specifically, the operation principle of the mechanical arm 2 and the bucket 3 adopts the corresponding structure of the excavator in the prior art. When it is necessary to remove slag, the whole device is moved forward to the range of the crushed stone residue area by manipulating the vehicle body 1, and the slag transport vehicle is parked below the other end of the transport channel 401. Then, a group of transmission shafts 403 are driven by a motor to rotate, and a group of transmission shafts 403 drives the corresponding sprockets 404 to rotate, so that the chain 405 and several groups of fixing parts 406 and several groups of push plates 407 do circular motion around the two groups of sprockets 404, and the attached below Figure 2 The direction indicated by the middle arrow is the direction of circular motion, and then the robotic arm 2 is manipulated to make the bucket 3 scoop the crushed stone residue into the feed port 402, and then several groups of push plates 407 will drive the crushed stone residue to move obliquely upward along the transport channel 401, and fall into the slag transport vehicle through the other end of the transport channel 401, thereby realizing the cleaning of the crushed stone residue. Compared with the prior art, several groups of push plates 407 are in the process of continuously making circular motions, and several groups of push plates 407 can not only realize the transportation of crushed stone residue, but also can block the crushed stone from rolling down, thereby improving the transportation efficiency of the crushed stone residue.

[0033] Embodiment 2

[0034] like Figure 3 As shown, compared with Example 1, another embodiment of the present invention is: the conveying mechanism 4 also includes a first synchronous gear 408, the first synchronous gear 408 is fixedly mounted on the end of a set of conveying shafts 403, and a roller brush 411 is rotatably mounted on the transport channel 401, and one end of the roller brush 411 is fixedly sleeved with a second synchronous gear 410, and the second synchronous gear 410 and the first synchronous gear 408 are both engaged with a synchronous belt 409.

[0035] Specifically, there are different types of residues generated in the tunnel. Some of the residues are mainly soil. Due to the strong viscosity of the soil, the soil is easy to adhere to the push plate 407. If it is not cleaned in time, too much soil attached to the push plate 407 will not only affect the efficiency of residue transportation, but also greatly increase the energy consumption of the push plate 407. When several groups of push plates 407 are performing circular motion, several groups of push plates 407 will come into contact with the fiber filaments of the roller brush 411. At the same time, the first synchronous gear 408 rotates with a group of transmission shafts 403. The first synchronous gear 408 drives the second synchronous gear 410 to rotate through the synchronous toothed belt 409. The second synchronous gear 410 drives the roller brush 411 to rotate. The rotating roller brush 411 rubs against the passing push plate 407, so that the soil attached to the push plate 407 is cleaned away by the roller brush 411, thereby ensuring the cleaning efficiency of the push plate 407 for the residue.

[0036] like Figures 4 to 6As shown in the figure, the fixing member 406 includes a U-shaped ferrule 4061 which is fixedly installed on the chain 405. Inside the U-shaped ferrule 4061, there is a fixed tube 4062 fixedly installed. Inside the fixed tube 4062, there is a rotary connecting column 4063 rotatably installed. One end of the rotary connecting column 4063 is fixedly connected to a push plate 407, and the other end of the rotary connecting column 4063 is fixedly connected to two groups of connecting rods 4064. Both groups of connecting rods 4064 are inserted with movable heads 4065. There is a spring 4067 sleeved on the two groups of connecting rods 4064. The movable head 4065 is slidably connected to the inner cavity of the fixed tube 4062. At the end of the movable head 4065, a roller 4066 is rotatably installed. An avoidance groove 4011 is opened on the lower end surface of the transportation channel 401. At one end inside the avoidance groove 4011, there is a pushing inclined surface 4012 for pushing the roller 4066. Two spiral grooves 621 are opened on the fixed tube 4062. Two pin shafts 651 are arranged on the outer circle of the movable head 4065, and the two pin shafts 651 are respectively located in the two spiral grooves 621.

[0037] Specifically, when the roller brush 411 cleans the push plate 407, the roller brush 411 is parallel to the push plate 407. This not only requires the roller brush 411 to be the same length as the push plate 407, but also the fiber filaments on the roller brush 411 are squeezed by the push plate 407 to have a very large bending degree, which makes the fiber filaments easy to break and reduces the service life of the fiber filaments. Therefore, when the push plate 407 moves obliquely upward along the transport channel 401, the roller 4066 on the fixing member 406 will be attached to the push plate 407. The inner wall of the transport channel 401 rolls, and the spring 4067 is in a compressed state. When the push plate 407 moves obliquely downward along the transport channel 401, the roller 4066 rolls into the avoidance groove 4011 opened on the lower end surface of the transport channel 401. Under the rebound force of the spring 4067, the movable head 4065 moves along the two groups of connecting rods 4064 toward the roller 4066. At the same time, the movable head 4065 drives the two groups of pins 651 to slide along the two groups of spiral grooves 621 respectively. Under the guidance of the spiral grooves 621, the movable head 4065 moves along the two groups of connecting rods 4064. , the movable head 4065 together with the two sets of connecting rods 4064, the screw-on column 4063 and the push plate 407 are rotated 90 degrees. After rotating 90 degrees, the push plate 407 is perpendicular to the roller brush 411. Since the push plate 407 is thin, the push plate 407 can easily pass through the fiber filaments on the roller brush 411 without causing destructive damage to the fiber filaments. At the same time, the roller brush 411 can clean up the mud attached to the push plate 407, which not only improves the service life of the roller brush 411, but also The volume of the cylindrical brush 411 will become smaller, which not only makes the device structure more compact, but also reduces the manufacturing cost of the device. After the push plate 407 is cleaned by the cylindrical brush 411, the roller 4066 will be squeezed by the push slope 4012 in the air avoidance groove 4011. When the roller 4066 rolls along the push slope 4012, the spring 4067 is compressed by the movable head 4065, and the pin shaft 651 slides back along the spiral groove 621, so that the push plate 407 is restored to a state parallel to the cylindrical brush 411.

[0038] like Figures 7 to 9 As shown, the push plate 407 includes a plate body 4071, one end of a screw-on column 4063 is fixedly connected to the plate body 4071, a telescopic claw 4072 movably installed in the plate body 4071, and two groups of U-shaped elastic bars 4073 are symmetrically arranged in the plate body 4071, one end of the U-shaped elastic bar 4073 is fixedly connected to the inner wall of the telescopic claw 4072, and the other end of the U-shaped elastic bar 4073 is fixedly connected to the inner wall of the plate body 4071, guide grooves 4013 are opened on both sides of the transport channel 401, and receiving shafts 4074 are set at both ends of the telescopic claw 4072. The guide grooves 4013 are composed of a U-shaped groove 31, an oblique groove 32, a straight groove 33, and an arc groove 34.

[0039] Specifically, when the push plate 407 moves obliquely upward along the transport channel 401, the two sets of receiving shafts 4074 at both ends of the push plate 407 will slide along the corresponding linear grooves 33, the U-shaped spring strips 4073 are in a stretched state, and the telescopic claws 4072 extend to the outside of the plate body 4071. When the push plate 407 changes from moving obliquely upward to moving obliquely downward, the receiving shafts 4074 will slide from the linear grooves 33 to the arc grooves 34. Under the guidance of the arc grooves 34, the telescopic claws 4072 will be completely retracted into the plate body 4071. Under the rebound force of the U-shaped spring strips 4073, the telescopic claws 4072 are kept in the plate body 4071, so that the entire push plate 407 is 07 is reduced in width. When the roller brush 411 cleans the push plate 407, the length of the fiber filaments on the roller brush 411 can be shortened, thereby reducing the volume of the entire roller brush 411 again. After the push plate 407 with reduced width is cleaned by the roller brush 411, the receiving shaft 4074 will enter the U-shaped groove 31, and the receiving shaft 4074 will slide into the oblique groove 32 along the U-shaped groove 31. Under the guidance of the oblique groove 32, the telescopic claw 4072 will re-extend to the outside of the extension plate body 4071, the U-shaped elastic strip 4073 will be stretched, and the receiving shaft 4074 will slide along the straight groove 33 again, and the above operation will be repeated in a cycle.

[0040] Working principle: The whole device is advanced to the range of the gravel residue area by manipulating the vehicle body 1, and the slag transport vehicle is parked below the other end of the transport channel 401. Then, a group of transmission shafts 403 are driven by the motor to rotate, and a group of transmission shafts 403 drives the corresponding sprockets 404 to rotate, so that the chain 405 and several groups of fixing parts 406 and several groups of push plates 407 make circular motion around the two groups of sprockets 404. Figure 2 The direction indicated by the middle arrow is the circular motion direction, and then the mechanical arm 2 is controlled to make the bucket 3 scrape the crushed stone residue into the feed port 402, and then a plurality of push plates 407 will drive the crushed stone residue to move obliquely upward along the transport channel 401, and fall into the slag transport vehicle through the other end of the transport channel 401, so as to realize the cleaning of the crushed stone residue;

[0041] When the push plates 407 are in circular motion, they will all come into contact with the fiber filaments of the roller brush 411. At the same time, the first synchronous gear 408 rotates along with the transmission shaft 403. The first synchronous gear 408 drives the second synchronous gear 410 to rotate through the synchronous toothed belt 409. The second synchronous gear 410 drives the roller brush 411 to rotate. The rotating roller brush 411 rubs against the push plates 407 passing by, so that the dirt attached to the push plates 407 is cleaned off by the roller brush 411.

[0042] When the push plate 407 moves obliquely upward along the transport channel 401, the roller 4066 on the fixing member 406 will roll along the inner wall of the transport channel 401, and the spring 4067 is in a compressed state. When the push plate 407 moves obliquely downward along the transport channel 401, the roller 4066 will roll into the avoidance groove 4011 opened on the lower end surface of the transport channel 401. Under the rebound force of the spring 4067, the movable head 4065 moves along the two groups of connecting rods 4064 toward the roller 4066. At the same time, the movable head 4065 drives the two groups of pins 651 to slide along the two groups of spiral grooves 621 respectively. Under the guidance of the spiral grooves 621, the movable head 4065, together with the two groups of connecting rods 4064 and the spiral grooves 621, moves toward the roller 4066. The connecting column 4063 and the push plate 407 rotate 90 degrees. After the push plate 407 rotates 90 degrees, it is perpendicular to the roller brush 411. The push plate 407 can easily pass through the fiber filaments on the roller brush 411. At the same time, the roller brush 411 can clean the dirt attached to the push plate 407. After the push plate 407 is cleaned by the roller brush 411, the roller 4066 is squeezed by the push inclined surface 4012 in the air avoidance groove 4011. When the roller 4066 rolls along the push inclined surface 4012, the spring 4067 is compressed by the movable head 4065, and the pin 651 slides back along the spiral groove 621, so that the push plate 407 is restored to a state parallel to the roller brush 411.

[0043] When the push plate 407 moves obliquely upward along the transport channel 401, the two sets of receiving shafts 4074 at both ends of the push plate 407 will slide along the corresponding linear grooves 33, the U-shaped spring strips 4073 are in a stretched state, and the telescopic claws 4072 extend to the outside of the plate body 4071. When the push plate 407 changes from moving obliquely upward to moving obliquely downward, the receiving shafts 4074 will slide from the linear grooves 33 to the arc grooves 34. Under the guidance of the arc grooves 34, the telescopic claws 4072 will be completely retracted into the plate body 4071. Under the guidance of the oblique groove 32, the telescopic claw 4072 will be extended to the outside of the extension plate body 4071 again, the U-shaped elastic strip 4073 will be stretched, and the receiving shaft 4074 will slide along the straight groove 33 again, and the above operation will be repeated in a cycle.

[0044] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of 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 slag removal device for a tunnel section, comprising a vehicle body (1) and a conveying mechanism (4), characterized in that: A robotic arm (2) is movably installed on the vehicle body (1), and a bucket (3) is provided at the end of the robotic arm (2); The conveying mechanism (4) includes: A transportation channel (401), which is fixedly installed on the vehicle body (1); An inlet (402) is provided at the end of the transportation channel (401); Two groups of transmission shafts (403) rotatably installed at both ends inside the transportation channel (401); Sprockets (404) fixedly sleeved on the transmission shafts (403); A chain (405) provided inside the transportation channel (401), and both groups of sprockets (404) are engaged with the chain (405); A number of groups of fixing members (406) are equidistantly installed on the chain (405); A push plate (407) is fixedly installed on the fixing member (406).

2. A slag removal device for tunnel section according to claim 1, characterized in that: The conveying mechanism (4) further includes: A first synchronous gear (408), which is fixedly installed at the end of one group of the transmission shafts (403); A drum brush (411), which is rotatably installed on the transportation channel (401); A second synchronous gear (410) is fixedly sleeved at one end of the drum brush (411); A synchronous toothed belt (409), and both the second synchronous gear (410) and the first synchronous gear (408) are engaged with the synchronous toothed belt (409).

3. A slag removal device for tunnel section according to claim 2, characterized in that: The fixing member (406) includes: A U-shaped card sleeve (4061), which is fixedly installed on the chain (405); Fixedly installed inside a fixing tube (4062) inside the U-shaped card sleeve (4061); A rotary connection post (4063) rotatably installed inside the fixing tube (4062), and one end of the rotary connection post (4063) is fixedly connected to the push plate (407); The other end of the rotary connection post (4063) is fixedly connected to two connecting rods (4064); Two groups of the connecting rods (4064) are respectively inserted with movable heads (4065); Springs (4067) sleeved on the two groups of connecting rods (4064).

4. A slag removal device for tunnel section according to claim 3, characterized in that: The movable head (4065) is slidably connected to the inner cavity of the fixing tube (4062), and a roller (4066) is rotatably installed at the end of the movable head (4065).

5. A slag removal device for tunnel section according to claim 4, characterized in that: An avoidance groove (4011) is opened on the lower end surface of the transportation channel (401), and a pushing inclined surface (4012) for pushing the roller (4066) is provided at one end inside the avoidance groove (4011).

6. A slag removal device for tunnel section according to claim 5, characterized in that: Two groups of spiral grooves (621) are opened on the fixing tube (4062), and two groups of pin shafts (651) are provided on the outer circle of the movable head (4065), and the two groups of pin shafts (651) are respectively located inside the two groups of spiral grooves (621).

7. A slag removal device for tunnel section according to claim 6, characterized in that: The push plate (407) includes: A plate body (4071), and one end of the rotary connection post (4063) is fixedly connected to the plate body (4071); A telescopic claw (4072) movably installed inside the plate body (4071); Two groups of U-shaped elastic strips (4073) symmetrically arranged inside the plate body (4071).

8. A slag removal device for tunnel section according to claim 7, characterized in that: One end of the U-shaped elastic strip (4073) is fixedly connected to the inner wall of the telescopic claw (4072), and the other end of the U-shaped elastic strip (4073) is fixedly connected to the inner wall of the plate body (4071).

9. A slag removal device for tunnel section according to claim 8, characterized in that: Guide grooves (4013) are provided on both sides of the transport channel (401), and receiving shafts (4074) are provided at both ends of the telescopic claw (4072).

10. A slag removal device for tunnel section according to claim 9, characterized in that: The guide groove (4013) is composed of a U-shaped groove (31), an oblique groove (32), a straight groove (33), and an arc groove (34).

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