Tunnel inverted arch virtual slag removing device

Abstract

The invention relates to the technical field of tunnel construction, and discloses a tunnel inverted arch virtual slag removing device which comprises a mounting frame, the mounting frame is fixedly connected with a traction vehicle, and a guiding mechanism, a pushing mechanism and a conveying mechanism are arranged on the mounting frame. According to the invention, through the cooperation of the guiding mechanism, the pushing mechanism and the conveying mechanism, the continuous mechanical cleaning of the tunnel inverted arch virtual slag is realized, the dependence on low-efficiency and high-risk manual operation is avoided, the cleaning efficiency is greatly improved, and the cycle period of tunnel construction is obviously shortened; the first guide plate and the second guide plate which are arranged in an inclined mode and spaced progressively increasing are adopted, scattered slags distributed on the two sides and the middle of the inverted arch can be effectively gathered and concentrated towards the center line position in the traction vehicle advancing process, finally, the slags are gathered into a bearing hopper, the problem that a cleaning blind area exists in a traditional cleaning mode is solved, and the cleaning efficiency is improved. And it is ensured that virtual slag on the surface of the inverted arch base is comprehensively removed, and the cleanliness and engineering quality of the base surface are improved.

Description

Technical Field

[0001] This invention relates to the field of tunnel construction technology, and more specifically to a device for removing loose debris from tunnel invert arches. Background Technology

[0002] In the field of tunnel construction, the invert arch, as the foundational load-bearing component of the tunnel structure, directly affects the long-term stability and operational safety of the entire tunnel. Before pouring the invert arch concrete, it is essential to thoroughly remove any loose debris, such as a mixture of gravel, rock powder, and soil, left over from blasting, excavation, and support processes from its base surface. Otherwise, this debris will form a weak interlayer between the invert arch and the stable bedrock, leading to uneven stress on the concrete slab. This can result in a series of serious consequences, such as settlement, cracking, or even instability of the invert arch structure, greatly threatening the quality and durability of the tunnel project.

[0003] Currently, the removal of loose debris from the invert arch at construction sites still heavily relies on manual labor combined with small machinery (such as handheld pneumatic picks, small excavators, or buckets). This method has many inherent drawbacks. First, manual cleaning is extremely inefficient, and the cleaning speed cannot keep up with the progress requirements of subsequent concrete pouring, becoming a key bottleneck restricting the tunnel excavation cycle. Second, the working space inside the tunnel is usually very limited and the environment is harsh, making cleaning not only extremely labor-intensive but also posing significant safety hazards such as falling objects from heights and mechanical injuries. Third, neither manual labor nor existing small machinery can effectively clean the corner areas where the invert arch meets the sidewalls, easily creating cleaning dead zones and blind spots, resulting in incomplete removal of loose debris and potential quality problems for the project. In addition, the loose debris removed needs to be transported multiple times before it can be finally transported out of the tunnel, which further increases the complexity of construction organization, construction period, and cost. Summary of the Invention

[0004] In order to overcome the shortcomings of the existing technology, which still relies heavily on manual operation combined with small machinery for cleaning up loose material in tunnel inverts, the present invention provides a loose material removal device for tunnel inverts to solve the problems existing in the background technology.

[0005] The present invention provides the following technical solution: a device for removing loose debris from a tunnel invert, comprising a mounting frame, which is fixedly connected to a traction vehicle. The mounting frame is provided with a guiding mechanism, a pushing mechanism, and a conveying mechanism. The guiding mechanism is used to gather loose debris in the tunnel invert together during the movement of the traction vehicle. The pushing mechanism is used to push the loose debris away from the guiding mechanism and to allow the loose debris to enter the conveying mechanism. The conveying mechanism is used to collect all the loose debris into a special container.

[0006] Preferably, the guiding mechanism includes a guide plate one and a guide plate two, both of which are fixedly installed on the mounting frame, and both guide plates one and two are arranged at an angle.

[0007] Preferably, the distance between guide plate one and guide plate two increases along the direction of travel of the traction vehicle, and a carrying bucket is provided between guide plate one and guide plate two.

[0008] Preferably, a cylinder is fixedly installed on guide plate one, a fixed frame is fixedly installed on guide plate two, a fixed rod is fixedly connected to the top of the fixed frame, and extension frame one and extension frame two are fixedly connected to the top of the carrying bucket. Extension frame one is fixedly connected to the output end of the cylinder, and extension frame two is sleeved on the surface of the fixed rod.

[0009] Preferably, the pushing mechanism includes a receiving frame, a positioning frame, and a motor. A pushing plate is fixedly installed on the receiving frame, and the positioning frame is fixedly connected to the top of the mounting frame.

[0010] Preferably, the positioning frame has a sliding groove inside, and a slider is fixedly connected to the bottom of the receiving frame. The slider is slidably installed in the sliding groove, and a fixed shaft is also fixedly connected to the receiving frame.

[0011] Preferably, the motor is fixedly connected to the mounting bracket, and a connecting rod one and a connecting rod two are provided between the motor output end and the fixed shaft. One end of the connecting rod one is fixedly connected to the motor output end, and the other end of the connecting rod one is rotatably connected to one end of the connecting rod two through a connecting shaft. The other end of the connecting rod two is rotatably connected to the fixed shaft.

[0012] Preferably, the conveying mechanism includes a support frame and a storage box. The support frame is fixedly installed on the guide plate 2, and rollers are rotatably installed on the support frame. Multiple rollers are provided, and a conveyor belt is installed between the multiple rollers.

[0013] Preferably, the storage box is fixedly installed on the guide plate 2, a clearance opening is provided on one side of the storage box, and a door panel is hinged to the other side of the storage box. The conveyor belt passes through the clearance opening and extends into the storage box.

[0014] Preferably, a drive device is provided on the support frame, which is used to provide rotational force to the roller.

[0015] The beneficial effects of this invention are: This invention achieves continuous mechanized cleaning of loose debris in tunnel inverts through the coordinated operation of a guiding mechanism, a pushing mechanism, and a conveying mechanism. This eliminates reliance on inefficient and high-risk manual labor, significantly improving cleaning efficiency and shortening the tunnel construction cycle. The invention employs two guide plates, arranged at an angle with increasing spacing, which effectively gather and concentrate scattered loose debris from both sides and the center of the invert towards the centerline during the movement of the traction vehicle, ultimately flowing into the carrying bucket. This overcomes the blind spots inherent in traditional cleaning methods, ensuring complete removal of loose debris from the invert base surface and improving the cleanliness of the base surface and the overall project quality. The pushing mechanism adopts… The system employs a crank-slider structure driven by a motor and consisting of a connecting rod and a slider. This structure precisely converts the motor's rotational motion into the stable linear reciprocating motion of the pusher plate. The transmission process is smooth and reliable, and the output thrust is strong and uniform. It can efficiently push the loose slag accumulated in the carrying hopper into the conveyor belt, ensuring the smoothness of the cleaning process. The integrated design of the conveying mechanism and the storage box allows the cleaned loose slag to be continuously sent into a special container for temporary storage via the conveyor belt. This achieves immediate cleaning and storage of loose slag, eliminating cumbersome intermediate transfer links. This not only optimizes the construction process and reduces costs, but also helps maintain the cleanliness of the working environment and construction safety inside the tunnel. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0018] Figure 2 This is a schematic diagram of the overall structure of the present invention.

[0019] Figure 3 This is a diagram showing the cooperation between the guiding mechanism and the pushing mechanism of the present invention.

[0020] Figure 4 This is a diagram showing the cooperation between the guiding mechanism and the pushing mechanism of the present invention.

[0021] Figure 5 This is a schematic diagram of the guiding mechanism structure of the present invention.

[0022] Figure 6 This is a schematic diagram of the pushing mechanism structure of the present invention.

[0023] Figure 7 For the present invention Figure 6 Enlarged view of the structure at point A in the image.

[0024] Figure 8 This is a schematic diagram of the conveying mechanism of the present invention.

[0025] The attached figures are labeled as follows: 1. Mounting frame; 2. Guiding mechanism; 21. Guide plate one; 22. Guide plate two; 23. Loading hopper; 231. Extension frame one; 232. Extension frame two; 24. Cylinder; 25. Fixing frame; 26. Fixing rod; 3. Pushing mechanism; 31. Pushing plate; 32. Receiving frame; 321. Fixing shaft; 33. Positioning frame; 34. Motor; 35. Connecting rod one; 36. Connecting rod two; 361. Connecting shaft; 4. Conveying mechanism; 41. Support frame; 42. Roller shaft; 43. Storage box; 431. Clearance opening; 432. Door panel; 44. Drive equipment; 45. Conveyor belt. Detailed Implementation

[0026] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0027] Reference Figures 1 to 2 The present invention provides a device for removing loose debris from the tunnel invert, including a mounting frame 1, which is fixedly connected to a traction vehicle. The mounting frame 1 is provided with a guiding mechanism 2, a pushing mechanism 3 and a conveying mechanism 4. The guiding mechanism 2 is used to gather loose debris in the tunnel invert during the movement of the traction vehicle. The pushing mechanism 3 is used to push the loose debris away from the guiding mechanism 2 and to allow the loose debris to enter the conveying mechanism 4. The conveying mechanism 4 is used to collect all the loose debris into a special container.

[0028] Reference Figures 1 to 5 The guiding mechanism 2 includes a guide plate 21 and a guide plate 22. Both guide plates 21 and 22 are fixedly installed on the mounting frame 1, and both guide plates 21 and 22 are arranged at an angle. The distance between guide plates 21 and 22 increases along the direction of travel of the traction vehicle. A carrying bucket 23 is provided between guide plates 21 and 22.

[0029] A cylinder 24 is fixedly installed on guide plate 1 21, a fixed frame 25 is fixedly installed on guide plate 22, a fixed rod 26 is fixedly connected to the top of the fixed frame 25, and an extension frame 1 231 and an extension frame 232 are fixedly connected to the top of the carrying bucket 23. The extension frame 1 231 is fixedly connected to the output end of the cylinder 24, and the extension frame 232 is sleeved on the surface of the fixed rod 26.

[0030] During use, as the tractor moves inside the tunnel invert, guided by guide plate 1 21 and guide plate 2 22, the loose slag on both sides of the tunnel invert gathers towards the middle and converges into the carrying bucket 23. When the carrying bucket 23 is full of loose slag, the tractor stops moving, the output end of cylinder 24 extends upward, and cylinder 24 drives the carrying bucket 23 to move upward synchronously through extension frame 1 231. The movement of the carrying bucket 23 drives extension frame 2 232 to move upward synchronously along the fixed rod 26. Afterwards, the pushing mechanism 3 pushes the loose slag away from the carrying bucket 23. After the loose slag is completely pushed away, the output end of the cylinder 24 shortens downward again, and the carrying bucket 23 returns to its initial position. The carrying bucket 23 returns to the space between the guide plate 1 21 and the guide plate 22, and the traction vehicle continues to travel in the tunnel invert arch. The above steps are repeated, and so on.

[0031] In summary, the guiding mechanism 2, through the inclined arrangement and increasing spacing of the guiding plates 21 and 22, can efficiently gather and concentrate the loose debris scattered on both sides and in the middle of the tunnel invert towards the centerline during the movement of the traction vehicle, and finally collect it into the bearing bucket 23. This overcomes the problem of blind spots in the cleaning of traditional cleaning methods, ensures that the loose debris on the surface of the invert base is completely removed, and improves the cleanliness of the base surface and the quality of the project.

[0032] Reference Figures 1 to 7 The pushing mechanism 3 includes a receiving frame 32, a positioning frame 33 and a motor 34. A pushing plate 31 is fixedly installed on the receiving frame 32. The positioning frame 33 is fixedly connected to the top of the mounting frame 1. A sliding groove is opened inside the positioning frame 33. A slider is fixedly connected to the bottom of the receiving frame 32. The slider is slidably installed in the sliding groove. A fixed shaft 321 is also fixedly connected to the receiving frame 32.

[0033] The motor 34 is fixedly connected to the mounting bracket 1. A connecting rod 35 and a connecting rod 36 are provided between the output end of the motor 34 and the fixed shaft 321. One end of the connecting rod 35 is fixedly connected to the output end of the motor 34. The other end of the connecting rod 35 is rotatably connected to one end of the connecting rod 36 through a connecting shaft 361. The other end of the connecting rod 36 is rotatably connected to the fixed shaft 321.

[0034] When in use, when the slag in the carrying hopper 23 is full, the output end of the cylinder 24 extends upward, and the cylinder 24 drives the carrying hopper 23 to move upward synchronously through the extension frame 231. During this process, the pusher plate 31 is gradually inserted into the carrying hopper 23. Subsequently, motor 34 drives connecting rod 35 to rotate around the output shaft of motor 34. The rotation of connecting rod 35 drives the receiving frame 32 to move linearly synchronously through connecting rod 36. The slider at the bottom of the receiving frame 32 slides synchronously along the groove in the positioning frame 33. In the first half cycle of one rotation of connecting rod 35, the receiving frame 32 drives the pusher plate 31 to move away from the bearing hopper 23. During this process, the pusher plate 31 pushes the loose slag away from the bearing hopper 23. In the second half cycle of one rotation of connecting rod 35, the receiving frame 32 drives the pusher plate 31 back into the bearing hopper 23.

[0035] In summary, the pushing mechanism 3 adopts an approximate crank-slider structure driven by the motor 34 and composed of a combination of connecting rod and slider. It can accurately convert the rotational motion of the motor 34 into the stable linear reciprocating motion of the pushing plate 31. Its transmission process is smooth and reliable, and the output thrust is strong and uniform. Thus, it can efficiently push the loose slag accumulated in the carrying hopper 23 into the conveying mechanism 4, ensuring the smoothness and continuity of the cleaning process.

[0036] Reference Figures 1 to 8 The conveying mechanism 4 includes a support frame 41 and a storage box 43. The support frame 41 is fixedly installed on the guide plate 22. Rollers 42 are rotatably installed on the support frame 41. Multiple rollers 42 are provided, and a conveyor belt 45 is installed between the multiple rollers 42. A drive device 44 is provided on the support frame 41, which is used to provide rotational force to the rollers 42.

[0037] Storage box 43 is fixedly installed on guide plate 22. A clearance opening 431 is provided on one side of storage box 43, and a door panel 432 is hinged on the other side of storage box 43. Conveyor belt 45 passes through clearance opening 431 and extends into storage box 43.

[0038] In use, during the first half of the cycle of one revolution of the connecting rod 35, the receiving frame 32 drives the pushing plate 31 to move away from the carrying hopper 23. During this process, the pushing plate 31 pushes the loose slag away from the carrying hopper 23, and the loose slag falls onto the conveyor belt 45. During the second half of the cycle of one revolution of the connecting rod 35, the receiving frame 32 drives the pushing plate 31 back into the carrying hopper 23. The driving device 44 drives the roller shaft 42 to rotate around its own axis. The rotation of the roller shaft 42 drives the conveyor belt 45 to rotate synchronously. Under the traction of the conveyor belt 45, the loose slag falls into the storage box 43 for collection.

[0039] In summary, the integrated design of the conveying structure and the storage box 43 allows the cleaned slag to be continuously fed into a special container for temporary storage via the conveyor belt 45, achieving immediate cleaning and storage of slag. This eliminates the cumbersome intermediate transfer process, not only optimizing the construction process and reducing costs, but also helping to maintain a clean working environment and construction safety within the tunnel. In addition, workers can easily clean the slag inside the storage box 43 by opening the door panel 432, further facilitating the operation.

[0040] The working principle of this invention is as follows: During the process of the traction vehicle moving inside the tunnel invert, under the guidance of guide plate 1 21 and guide plate 22, the loose slag on both sides of the tunnel invert gathers towards the middle and converges into the carrying bucket 23. When the carrying bucket 23 is full of loose slag, the traction vehicle stops moving, the output end of cylinder 24 extends upward, and cylinder 24 drives the carrying bucket 23 to move upward synchronously through extension frame 1 231. The movement of the carrying bucket 23 drives extension frame 232 to move upward synchronously along the fixed rod 26. During this process, the push plate 31 is gradually inserted into the carrying bucket 23.

[0041] Subsequently, motor 34 drives connecting rod 35 to rotate around the output shaft of motor 34. The rotation of connecting rod 35 drives the receiving frame 32 to move linearly synchronously through connecting rod 36. The slider at the bottom of the receiving frame 32 slides synchronously along the groove in the positioning frame 33. In the first half cycle of one rotation of connecting rod 35, the receiving frame 32 drives the pusher plate 31 to move away from the bearing hopper 23. During this process, the pusher plate 31 pushes the loose slag away from the bearing hopper 23, and the loose slag falls onto the conveyor belt 45. In the second half cycle of one rotation of connecting rod 35, the receiving frame 32 drives the pusher plate 31 back into the bearing hopper 23. The driving device 44 drives the roller shaft 42 to rotate around its own axis. The rotation of the roller shaft 42 drives the conveyor belt 45 to rotate synchronously. Under the traction of the conveyor belt 45, the loose slag falls into the storage box 43 for collection.

[0042] Afterwards, the output end of cylinder 24 shortens downwards, the carrying bucket 23 returns to its initial position, and the carrying bucket 23 returns to the space between guide plate 1 21 and guide plate 22. The traction vehicle continues to move inside the tunnel invert arch, repeating the above steps in a continuous cycle.

[0043] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A device for removing loose slag from a tunnel invert, comprising a mounting frame (1), the mounting frame (1) being fixedly connected to a traction vehicle, characterized in that, The mounting frame (1) is equipped with a guiding mechanism (2), a pushing mechanism (3) and a conveying mechanism (4). The guiding mechanism (2) is used to gather the loose slag in the tunnel arch together during the movement of the traction vehicle. The pushing mechanism (3) is used to push the loose slag away from the guiding mechanism (2) and let the loose slag enter the conveying mechanism (4). The conveying mechanism (4) is used to collect all the loose slag in a special container.

2. The tunnel invert slag removal device according to claim 1, characterized in that, The guiding mechanism (2) includes a first guide plate (21) and a second guide plate (22). Both the first guide plate (21) and the second guide plate (22) are fixedly installed on the mounting frame (1), and both the first guide plate (21) and the second guide plate (22) are arranged at an angle.

3. The tunnel invert slag removal device according to claim 2, characterized in that, The distance between guide plate one (21) and guide plate two (22) increases along the direction of travel of the traction vehicle, and a carrying bucket (23) is provided between guide plate one (21) and guide plate two (22).

4. The tunnel invert slag removal device according to claim 3, characterized in that, A cylinder (24) is fixedly installed on guide plate one (21), a fixed frame (25) is fixedly installed on guide plate two (22), a fixed rod (26) is fixedly connected to the top of the fixed frame (25), an extension frame one (231) and an extension frame two (232) are fixedly connected to the top of the carrying bucket (23), the extension frame one (231) is fixedly connected to the output end of the cylinder (24), and the extension frame two (232) is sleeved on the surface of the fixed rod (26).

5. A device for removing loose slag from a tunnel invert according to claim 4, characterized in that, The pushing mechanism (3) includes a receiving frame (32), a positioning frame (33) and a motor (34). A pushing plate (31) is fixedly installed on the receiving frame (32), and the positioning frame (33) is fixedly connected to the top of the mounting frame (1).

6. A device for removing loose slag from a tunnel invert according to claim 5, characterized in that, The positioning frame (33) has a sliding groove inside, and the bottom of the receiving frame (32) is fixedly connected to a slider. The slider is slidably installed in the sliding groove, and a fixed shaft (321) is also fixedly connected to the receiving frame (32).

7. A device for removing loose slag from a tunnel invert according to claim 6, characterized in that, The motor (34) is fixedly connected to the mounting bracket (1). A connecting rod 1 (35) and a connecting rod 2 (36) are provided between the output end of the motor (34) and the fixed shaft (321). One end of the connecting rod 1 (35) is fixedly connected to the output end of the motor (34), and the other end of the connecting rod 1 (35) is rotatably connected to one end of the connecting rod 2 (36) through the connecting shaft (361). The other end of the connecting rod 2 (36) is rotatably connected to the fixed shaft (321).

8. A device for removing loose slag from a tunnel invert according to claim 7, characterized in that, The conveying mechanism (4) includes a support frame (41) and a storage box (43). The support frame (41) is fixedly installed on the guide plate (22). Rollers (42) are rotatably installed on the support frame (41). Multiple rollers (42) are provided, and a conveyor belt (45) is installed between the multiple rollers (42).

9. A device for removing loose slag from a tunnel invert according to claim 8, characterized in that, The storage box (43) is fixedly installed on the guide plate (22). A clearance opening (431) is provided on one side of the storage box (43), and a door panel (432) is hinged on the other side of the storage box (43). The conveyor belt (45) passes through the clearance opening (431) and extends into the storage box (43).

10. A device for removing loose slag from a tunnel invert according to claim 9, characterized in that, A drive device (44) is provided on the support frame (41) to provide rotational force to the roller (42).

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