Automatic positioning and cutting device for opening holes in tunnel profile steel arch web

Abstract

The invention relates to an automatic positioning and cutting device for tunnel section steel arch web trepanning, and belongs to the technical field of arch cutting equipment. The device comprises a conveying mechanism and a positioning and cutting mechanism, the conveying mechanism is used for conveying an arch frame, the positioning and cutting mechanism comprises a positioning assembly, a linkage assembly and a cutting assembly, the positioning assembly is arranged in front of the cutting assembly in the conveying direction of the arch frame, and the linkage assembly is connected with the positioning assembly and the cutting assembly. The lowest height of the positioning assembly is lower than that of the cutting assembly, the weight of the positioning assembly is larger than that of the cutting assembly, the positioning assembly comprises a first inclined face, and when the arch frame is conveyed in the conveying direction, a flange plate of the arch frame can abut against the first inclined face and slide relatively to push the positioning assembly to move upwards by a preset distance; the positioning assembly moves upwards to drive the cutting assembly to move downwards to be close to the web through the linkage assembly, and the cutting assembly is used for cutting and trepanning the web of the arch frame. The method has the effect of improving the problem of poor positioning precision and reliability of trepanning of the web of the arch center.

Description

Technical Field

[0001] The present application relates to the technical field of arch frame cutting equipment, and in particular to an automatic positioning and cutting device for opening holes in the web of a tunnel steel arch frame. Background Art

[0002] In tunnel construction, tunnel steel arches are important structural support components, playing a key role in ensuring tunnel stability and safety. These are typically fabricated from curved I-beams, with holes cut into the webs to accommodate their intended use. With the continued expansion of tunnel construction and increasing demands for construction quality, the manufacturing and processing quality of tunnel steel arches also needs to be improved.

[0003] Currently, traditional tunnel steel arch web drilling operations rely primarily on manual positioning and cutting. Operators must first use measuring tools to mark the hole locations on the arch webs to determine the precise opening points. They then use a cutting gun to cut according to the marked locations. This manual operation is labor-intensive and cumbersome. Another common method uses infrared positioning and a multi-axis mechanism to adjust the position of a plasma cutting gun to achieve web drilling.

[0004] However, manual positioning and cutting in this method is not only inefficient and time-consuming, but also easily affected by the operator's skill level and working state, making it difficult to ensure the accuracy of the hole positioning, affecting the overall quality and performance of the arch. Multi-axis structures are complex and costly, and infrared detection is easily affected by obstructions, which is not conducive to improving the reliability of hole positioning.

[0005] The above-mentioned related technologies have the defects of poor positioning accuracy and reliability of the openings in the arch web. Summary of the Invention

[0006] In order to improve the problem of poor positioning accuracy and reliability of openings in the web of an arch frame, the present application provides an automatic positioning and cutting device for openings in the web of a tunnel steel arch frame.

[0007] The automatic positioning and cutting device for opening holes in the web of a tunnel steel arch frame provided in this application adopts the following technical solutions: An automatic positioning and cutting device for opening holes in the web of a tunnel steel arch frame, comprising: a conveying mechanism, the conveying mechanism is used to convey the arch frame so that the web of the arch frame is placed horizontally; a positioning and cutting mechanism, the positioning and cutting mechanism comprising a positioning component, a linkage component and a cutting component, along the conveying direction of the arch frame, the positioning component is arranged in front of the cutting component, the linkage component is respectively connected to the positioning component and the cutting component, the lowest height of the positioning component is lower than the lowest height of the cutting component, the weight of the positioning component is greater than the weight of the cutting component, the positioning component includes a first inclined surface, when the arch frame is conveyed along the conveying direction, the flange plate of the arch frame can abut against the first inclined surface and slide relatively, pushing the positioning component to move up a preset distance, the upward movement of the positioning component drives the cutting component to move down through the linkage component, so that the cutting component moves down close to the web of the arch frame, and the cutting component is used to cut holes in the web of the arch frame.

[0008] By adopting the above technical solution, the conveying mechanism can convey the arch frame and place its web horizontally, which is convenient for subsequent cutting operations; the positioning component can be heavier than the cutting component and have a minimum height lower than the cutting component. The positioning component uses the first inclined surface to cooperate with the arch frame, so that the arch frame abuts the first inclined surface and slides relatively during the conveying process. Through the decomposition of the force of the first inclined surface, the positioning component is pushed up a preset distance. At the same time, the linkage component can transmit the upward movement of the positioning component to the cutting component, driving the cutting component to move down close to the web of the arch frame, so that the cutting component can cut the web of the arch frame. Since the arch frame pushes the positioning component to move a preset distance, and the movement of the positioning component drives the movement of the cutting component, they are related. Therefore, the opening position of the arch frame of the same specification on the web is the same distance from the flange plate, and the cutting component is the same distance from the web, thereby realizing automatic positioning of the opening position of the arch frame web, improving the positioning and cutting efficiency, and the feature of achieving positioning through physical contact alleviates the problem of poor reliability of light detection.

[0009] Optionally, the positioning assembly includes a second inclined surface, which is arranged opposite to the first inclined surface. The second inclined surface is used to slide with the flange plate of the arch frame, so that the positioning assembly can slowly descend after moving up.

[0010] By adopting the above technical solution, the positioning assembly is provided with a second inclined surface which is opposite to the first inclined surface. The second inclined surface slides with the arch frame, so that the positioning assembly can slowly descend after moving up, thereby reducing the damage to the web caused by the sudden descent of the positioning assembly with a certain weight; at the same time, the positioning assembly can pass over the flange plate and contact the web. As the arch frame is transported, the positioning assembly and the web slide relative to each other. The weight of the positioning assembly can be used to clean the upper surface of the web close to the cutting assembly, thereby reducing the problem of abnormal protrusions on the upper surface of the web close to the cutting assembly during cutting, thereby improving the cutting quality.

[0011] Optionally, the linkage assembly includes a support frame, a first rack, a linkage gear and a second rack. The support frame is mounted above the conveying mechanism. The first rack and the second rack are both slidably connected to the support frame. The linkage gear is rotatably connected to the support frame. The first rack and the second rack are both engaged with the linkage gear and are respectively arranged on both sides of the linkage gear. The first rack is connected to the positioning assembly, and the second rack is connected to the cutting assembly. A limit block is provided on the top of the first rack, and the limit block is used to cooperate with the support frame to limit the lowest position of the positioning assembly.

[0012] By adopting the above technical solution, the support frame is erected above the conveying mechanism, providing support and installation basis for the first rack, the linkage gear and the second rack; the first rack is connected to the positioning assembly, and can slide upward when the positioning assembly is pushed upward by the arch frame; the linkage gear is rotatably connected to the support frame, and at the same time engages with the first rack and the second rack, which can convert the linear motion of the first rack into circular motion, and transmit it to the second rack, so that the second rack moves vertically, and in the opposite direction of movement of the first rack; the second rack is connected to the cutting assembly, and slides downward under the drive of the linkage gear, so that after the flange plate pushes the positioning assembly upward, it drives the cutting assembly to move downward, so as to facilitate cutting and opening holes in the web of the arch frame, facilitate accurate positioning of the hole position, and make the spacing between the hole position on each arch frame and the flange plate more precise.

[0013] Optionally, the linkage assembly includes a slide rail, a sliding drive member and a slider, the lower end of the first rack is provided with a clamping member, the slide rail is connected to the support frame, the slider is slidably connected to the slide rail, the sliding drive member is arranged on the slide rail, the sliding drive member is arranged above the slider, the telescopic end of the sliding drive member is used to selectively clamp the slider, the slider is slidably connected to the first rack, and the slider is arranged above the clamping member. In the initial state, the sliding drive member is used to limit the upward movement distance of the slider, and the arch frame pushes the first rack upward until the clamping member abuts against the slider and reaches the cutting state. After the cutting is completed, the sliding drive member releases the limit on the slider, and the clamping member can push the slider upward, so that the positioning assembly can pass over the flange plate and slide with the web plate.

[0014] By adopting the above technical solution, the sliding drive member is used to selectively clamp the slider, and in the initial state, the upper limit of the upward movement of the slider along the slide rail is limited, so that the arch frame pushes the first rack to move up until the clamping member abuts the slider, and then the cutting state is reached, thereby achieving precise positioning and cutting; after the cutting is completed, the sliding drive member releases the limit, and the clamping member pushes the slider to move up synchronously, so that the positioning component can cross the flange plate and slide with the web, scrape the upper surface of the web close to the cutting component, and improve the surface quality of the web after cutting.

[0015] Optionally, the cutting assembly includes a cutting platform, a cutting drive, a first cutting gear, a second cutting gear, a rotating member and a cutting member. The cutting platform is connected to the linkage assembly, the cutting drive is arranged on the cutting platform, the output end of the cutting drive is transmission-connected to the first cutting gear, the second cutting gear is rotationally connected to the cutting platform, the second cutting gear is engaged with the first cutting gear, the rotating member is connected to the second cutting gear, the second cutting gear is used to drive the rotating member to rotate in a horizontal plane, one end of the rotating member is connected to the cutting member, and the cutting member is used to cut the web of the arch frame.

[0016] By adopting the above technical solution, the cutting platform is used to connect the linkage assembly to provide support and installation basis for the entire cutting assembly; the cutting drive is used to provide power for the circular motion of the cutting member, and the output end of the cutting drive is connected to the first cutting gear to drive the first cutting gear to rotate; the first cutting gear is engaged with the second cutting gear to transmit the power of the cutting drive to the second cutting gear; the second cutting gear is rotatably connected to the cutting platform, rotates under the drive of the first cutting gear, and drives the rotating member connected to the second cutting gear to rotate around the axis of the second cutting gear in the horizontal plane; the end of the rotating member is connected to the cutting member, and the rotation of the second cutting gear is transmitted to the cutting member, and the cutting member performs circular motion driven by the rotating member, thereby cutting and opening a hole in the web of the arch frame through the circularly rotating cutting member.

[0017] Optionally, the cutting assembly further includes a connecting piece, a sleeve and a locking piece, one end of the connecting piece is connected to the center of the second cutting gear, and the other end of the connecting piece is connected to the outer wall of the sleeve, the rotating piece is slid through the sleeve, so that the horizontal distance between the cutting piece and the axis of the second cutting gear is adjustable, the sleeve is provided with a screw hole, the locking piece is screwed into the screw hole, and the end of the locking piece can tighten the rotating piece.

[0018] By adopting the above technical solution, the connecting member connects the second cutting gear and the sleeve, so that they form an integral linkage structure; the rotating member can slide in the sleeve, thereby realizing the adjustment of the horizontal distance between the cutting member and the axis of the second cutting gear, thereby realizing the adjustment of the opening radius, which can adapt to the cutting requirements of different sizes or positions; the screw hole provided on the sleeve is used to screw the locking member, and after the end of the locking member is tightened against the rotating member, the position of the rotating member in the sleeve can be fixed, thereby ensuring the stability of the cutting process and improving the cutting quality.

[0019] Optionally, the cutting drive member causes the rotating member to rotate alternately in clockwise and counterclockwise directions.

[0020] By adopting the above technical solution, the cutting drive member causes the rotating member to rotate alternately in clockwise and counterclockwise directions, which can change the cutting direction, complete the cutting of the arch frame web more flexibly, and improve the cutting efficiency and quality.

[0021] Optionally, the conveying mechanism includes two groups of lower conveying components, which are horizontally spaced apart and connected by a number of connecting components, so that the arch frame is erected on the two groups of lower conveying components, and the two groups of lower conveying components move synchronously to convey the arch frame.

[0022] By adopting the above technical solution, two groups of lower conveying components arranged horizontally at intervals and connected by a number of connecting components can enable the arch frame to be firmly erected thereon, and the synchronous movement of the two groups of lower conveying components can keep the arch frame stable during the conveying process, thereby realizing stable and efficient conveying of the arch frame.

[0023] Optionally, the conveying mechanism includes two groups of upper conveying components, the upper conveying components corresponding to the lower conveying components, the upper conveying components are arranged above the lower conveying components, and the arch frame is clamped between the upper conveying components and the lower conveying components in the vertical direction. The upper conveying components abut the upper end of the arch frame, and the corresponding upper conveying components and the lower conveying components cooperate to convey the arch frame.

[0024] By adopting the above technical solution, the conveying mechanism adopts two groups of upper conveying components to cooperate with the corresponding lower conveying components, and the arch frame is clamped between the two in the vertical direction. The upper conveying component abuts the upper end of the arch frame, and the upper and lower conveying components cooperate to convey the arch frame, making the arch frame more stable during the conveying process, reducing the shaking or deviation of the arch frame, and ensuring that the arch frame can be accurately conveyed to the cutting station. The clamping action of the upper conveying component and the lower conveying component can give the arch frame sufficient power to push the positioning component, thereby improving the accuracy and stability of the cutting hole.

[0025] Optionally, it also includes a swinging mechanism, which is vertically arranged between the lower conveying assembly and the upper conveying assembly, and the swinging mechanism includes a bearing base, a swinging member and a support plate, the bearing base is arranged on the lower conveying assembly, the fixed end of the swinging member is arranged on the bearing base, the swinging end of the swinging member is connected to the support plate, so that the support plate swings on the bearing base, and the support plate is used to support the arch frame so that the arch frame swings along the arc direction of the arch frame itself, and the linkage assembly includes a telescopic driving member, the fixed end of the telescopic driving member is connected to the second rack, the telescopic end of the telescopic driving member is connected to the cutting platform, and the telescopic driving member is used to drive the cutting platform to move vertically relative to the second rack.

[0026] By adopting the above technical solution, the swinging mechanism is used to drive the arch frame to swing, wherein the supporting base is used to carry the swinging member and the supporting plate, so that the swinging mechanism can be transported as a whole on the lower conveying assembly; the swinging member is used to provide a power source, so that the supporting plate swings on the supporting base, and then the arch frame on the supporting plate can swing along the arc of the arch frame itself, so that the alignment position of the cutting member on the arch frame can be changed, so that holes can be opened at multiple positions on the arch frame through the cutting assembly; and the cutting platform and the second rack are connected by a telescopic drive member, so that the vertical distance between the cutting member and the arch frame can be adjusted, so that when the arch frame swings, the lower end of the cutting member can be separated from the arch frame through the telescopic drive member, thereby reducing the risk of interference.

[0027] In summary, this application has at least the following beneficial technical effects: The arch frame is transported by the conveying mechanism and the web is placed horizontally. The positioning and cutting mechanism uses the arch frame to push the positioning component upward and drive the cutting component downward to cut holes in the web, thereby realizing automatic positioning and cutting of holes in the web of the tunnel steel arch frame, improving cutting efficiency, reducing manpower and time consumption, and alleviating the problem that manual positioning and cutting are easily affected by the operator's skill level and working status, ensuring the accuracy of the hole position, making the hole position accurate and the hole size consistent, and improving the overall quality and performance of the arch frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is an overall schematic diagram of the automatic positioning and cutting device for opening holes in the web of a tunnel steel arch frame according to the first embodiment of the present application.

[0029] Figure 2 It is a schematic diagram of the conveying mechanism of Example 1 of the present application.

[0030] Figure 3 This is a schematic diagram of the cooperation between the positioning component and the cutting component of Example 1 of the present application.

[0031] Figure 4 It is an overall schematic diagram of the automatic positioning and cutting device for opening holes in the web of a tunnel steel arch frame according to the second embodiment of the present application.

[0032] Figure 5 yes Figure 4 Enlarged view of point A in the middle.

[0033] Description of reference numerals: 110, web plate; 120, flange plate; 1. Conveying mechanism; 11. Lower conveying assembly; 12. Upper conveying assembly; 121. Limiting member; 2. Positioning and cutting mechanism; 21. Positioning assembly; 211. First inclined surface; 212. Second inclined surface; 22. Linkage assembly; 221. Support frame; 222. First rack; 2221. Limit block; 223. Linkage gear; 224. Second rack; 225. Slide rail; 226. Sliding drive member; 227. Sliding block; 228. Connecting member; 229. Telescopic drive member; 23. Cutting assembly; 231. Cutting platform; 232. Cutting drive member; 233. First cutting gear; 234. Second cutting gear; 235. Rotating member; 236. Cutting member; 237. Connecting member; 238. Sleeve; 239. Locking member; 3. Swing mechanism; 31. Load-bearing base plate; 32. Swing member; 321. Connecting member; 33. Support plate. DETAILED DESCRIPTION

[0034] The following is combined with Figure 1 -Attached Figure 5 The present application is further described in detail. In this embodiment, unless otherwise specified, the terms "connected", "connected" and "fixed" are understood in a broad sense, including fixed connection, detachable connection, connection to form an integral structure, mechanical connection, electrical connection, direct connection, indirect connection through an intermediary, internal connection and interaction between two elements, and can be understood based on the specific circumstances.

[0035] In this application, unless otherwise expressly specified and limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or the first and second features being in contact not directly but through another feature between them. Moreover, in the description of this embodiment, the terms "above", "below", "left", "right", and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application. Unless otherwise specified, orientation words such as "inside" and "outside" used in this application refer to the outlines of the corresponding components themselves.

[0036] Example 1 like Figure 1 、 Figure 2 and Figure 3 As shown, the first embodiment of the present application discloses an automatic positioning and cutting device for opening holes in the web of a tunnel steel arch frame (hereinafter referred to as the "device"). The device is used to cut holes in the web 110 of an I-beam, which includes two flanges 120 and a web 110 connected to the two flanges 120 at both ends. The device comprises a conveying mechanism 1 and a positioning and cutting mechanism 2, which can precisely locate the hole opening on the web 110, ensuring a controllable distance between the hole opening and the flanges 120.

[0037] like Figure 1 、 Figure 2 and Figure 3 As shown, the conveying mechanism 1 is used to convey the arch frame, and during conveyance, the web 110 of the arch frame is placed horizontally to facilitate subsequent cutting operations. The positioning and cutting mechanism 2 includes a positioning assembly 21, a linkage assembly 22, and a cutting assembly 23. The linkage assembly 22 connects the positioning assembly 21 and the cutting assembly 23 respectively. Along the conveying direction of the arch frame, the positioning assembly 21 is located in front of the cutting assembly 23. The weight of the positioning assembly 21 is greater than the weight of the cutting assembly 23. The lowest height of the positioning assembly 21 is lower than the lowest height of the cutting assembly 23, and the lowest height of the cutting assembly 23 is higher than the highest height of the flange plate 120. This ensures that when the arch frame is conveyed, the front flange plate 120 can pass under the cutting assembly 23 and contact the positioning assembly 21.

[0038] The positioning assembly 21 includes a first inclined surface 211. When the arch is transported along the conveying direction, the flange plate 120 of the arch can abut against the first inclined surface 211 and slide relative to it. The first inclined surface 211 decomposes the force, pushing the positioning assembly 21 upward by a preset distance. The upward movement of the positioning assembly 21 drives the cutting assembly 23 downward through the linkage assembly 22, thereby causing the cutting assembly 23 to move downward close to the arch web 110, so that the cutting assembly 23 can cut a hole in the arch web 110. Because the arch pushes the positioning assembly 21 upward by the preset distance and the positioning assembly 21 drives the cutting assembly 23 downward, the hole openings on the web 110 of arches of the same specification and batch are at the same distance from the flange plate 120 at the front end. The cutting assembly 23 is also suspended above the web 110 at the same distance, ensuring consistent cutting quality. This achieves automatic positioning of the hole openings on the arch web 110, improves positioning and cutting efficiency, and enhances cutting quality. Furthermore, the feature of achieving positioning through physical contact of the positioning component 21 alleviates the problem of poor reliability of light detection.

[0039] like Figure 1 、 Figure 2 and Figure 3 As shown, the conveying mechanism 1 optionally includes two sets of lower conveying assemblies 11. The two sets of lower conveying assemblies 11 are arranged horizontally and spaced apart and connected by a plurality of connecting assemblies. This improves the stability of the two sets of lower conveying assemblies 11 and enables the arch to be stably erected on the two sets of lower conveying assemblies 11. The synchronous movement of the two sets of lower conveying assemblies 11 can keep the arch stable during the conveying process, achieving stable and efficient conveying of the arch.

[0040] Optionally, the conveying mechanism 1 includes two groups of upper conveying assemblies 12, the upper conveying assemblies 12 corresponding to the lower conveying assemblies 11, and the upper conveying assemblies 12 are arranged above the lower conveying assemblies 11. In the vertical direction, the arch is clamped between the upper conveying assemblies 12 and the lower conveying assemblies 11, and the upper conveying assemblies 12 abut the upper end of the arch. The corresponding upper conveying assemblies 12 and the lower conveying assemblies 11 cooperate to convey the arch, making the arch more stable during the conveying process, reducing the shaking or deviation of the arch, ensuring that the arch can be accurately conveyed to the cutting station, and through the clamping action of the upper conveying assemblies 12 and the lower conveying assemblies 11, the arch has sufficient power to push the positioning assembly 21, thereby improving the accuracy and stability of the cutting opening.

[0041] like Figure 1 、 Figure 2 and Figure 3 As shown, optionally, the upper conveying assembly 12 is provided with a plurality of limit members 121 in the circumferential direction, and the limit members 121 are arranged at intervals along the circumference of the upper conveying assembly 12, and the limit members 121 are used to limit the horizontal movement of the arch frame. The plurality of limit members 121 arranged at intervals along the circumference of the upper conveying assembly 12 can contact the arch frame when conveying the arch frame, thereby effectively limiting the horizontal movement of the arch frame, ensuring the stability of the arch frame during the conveying process, and further providing sufficient driving force for the arch frame, thereby improving the working efficiency and cutting accuracy of the entire device. The lower conveying assembly 11 can use a double-speed chain conveyor line, and the upper conveying assembly 12 can be a synchronous belt conveyor line, and the lower end surface of the synchronous belt of the synchronous belt conveyor line can contact the upper end of the arch frame. The limiting member 121 is a raised structure arranged on the outer surface of the synchronous belt; two adjacent limiting members 121 can be regarded as a group, and the spacing between the two limiting members 121 in the same group is equal to or greater than the horizontal width of the arch frame, so that the two limiting members 121 in the same group are respectively located on the opposite sides of the two flange plates 120 of the arch frame; the spacing between different groups of limiting members 121 can be set as needed.

[0042] Optionally, the positioning assembly 21 includes a second inclined surface 212, which is disposed opposite to the first inclined surface 211 and has an inclination direction opposite to the first inclined surface 211. The second inclined surface 212 is configured to slide with the flange plate 120 of the arch frame, allowing the positioning assembly 21 to slowly descend after being moved upward. The positioning assembly 21 is provided with a second inclined surface 212, which is disposed opposite to the first inclined surface 211. The second inclined surface 212 slides with the arch frame, allowing the positioning assembly 21 to slowly descend after being moved upward, thereby reducing damage to the web 110 caused by the sudden descent of the heavy positioning assembly 21. At the same time, the positioning assembly 21 is able to pass over the flange plate 120 and contact the web 110. As the arch frame continues to be transported, the positioning assembly 21 and the web 110 slide relative to each other. The weight of the positioning assembly 21 can clean the upper surface of the web 110 near the cutting assembly 23, reducing the problem of abnormal protrusions on the upper surface of the web 110 close to the cutting assembly 23 during cutting, thereby improving cutting quality. The inclination angles of the first inclined surface 211 and the second inclined surface 212 are not limited and can be set as needed.

[0043] like Figure 1 、 Figure 2 and Figure 3 As shown, the linkage assembly 22 optionally includes a support frame 221, a first rack 222, a linkage gear 223, and a second rack 224. The support frame 221 is mounted above the conveying mechanism 1, providing support and a mounting base for the first rack 222, the linkage gear 223, and the second rack 224. The first rack 222 and the second rack 224 are both slidably connected to the support frame 221, and the linkage gear 223 is rotationally connected to the support frame 221. The first rack 222 and the second rack 224 are both meshed with the linkage gear 223 and are located on either side of the linkage gear 223, so that the vertical movement directions of the first rack 222 and the second rack 224 are opposite. The first rack 222 is connected to the positioning assembly 21, and the second rack 224 is connected to the cutting assembly 23. The first rack 222 is connected to the positioning assembly 21, and can slide upward when the positioning assembly 21 is pushed upward by the arch frame; the linkage gear 223 is rotatably connected to the support frame 221, and at the same time engages with the first rack 222 and the second rack 224, which can convert the linear motion of the first rack 222 into circular motion and transmit it to the second rack 224, so that the second rack 224 moves vertically, and in the opposite direction of the movement of the first rack 222; the second rack 224 is connected to the cutting assembly 23, and slides downward under the drive of the linkage gear 223, so that after the front flange plate 120 pushes the positioning assembly 21 to move upward, it drives the cutting assembly 23 to move downward, so as to facilitate cutting and opening holes in the web 110 of the arch frame, facilitating accurate positioning of the hole position, and making the horizontal spacing between the hole position on each arch frame and the flange plate 120 more precise.

[0044] The first rack 222 and the second rack 224 are both mounted on the top of the support frame 221. A stopper 2221 is provided on the top of the first rack 222. The stopper 2221 is configured to engage with the support frame 221 to limit the lowest position of the positioning assembly 21. The stopper 2221 is provided at the upper end of the first rack 222 to limit the lowest height of the positioning assembly 21, to which the lower end of the first rack 222 is connected. This prevents the first rack 222 from moving downward and disengaging from the linkage gear 223, thereby ensuring the reliability of the device.

[0045] like Figure 1 、 Figure 2 and Figure 3 As shown, the linkage assembly 22 optionally includes a slide rail 225, a sliding driver 226, and a slider 227. The slide rail 225 is connected to the support frame 221. The sliding driver 226 is disposed on the slide rail 225. One side of the slider 227 is slidably connected to the slide rail 225, and the slide drive 226 is disposed above the slider 227. The telescopic end of the sliding driver 226 vertically extends and retracts, and the telescopic end of the sliding driver 226 is connected to the slider 227. The telescopic end of the sliding driver 226 selectively engages with the slider 227. Specifically, the telescopic end of the sliding driver 226 extends to engage the slider 227 at a lower limit, and the telescopic end retracts to release the lower limit engagement of the slider 227, allowing the slider 227 to continue to move upward. A clamping member 228 is disposed at the lower end of the first rack 222. The clamping member 228 is fixedly connected to the first rack 222. The slider 227 is disposed above the clamping member 228, and the other side of the slider 227 is slidably connected to the first rack 222. In the initial state, the sliding drive member 226 remains extended to limit the upward movement distance of the slider 227, so that the arch pushes the first rack 222 to move up a preset distance until the clamping member 228 abuts against the slider 227, that is, the cutting state is reached and the cutting assembly 23 can start the cutting operation; after the cutting is completed, the sliding drive member 226 releases the limit on the slider 227, and the clamping member 228 pushes the slider 227 to move upward, so that the positioning assembly 21 can pass over the flange plate 120 and slide with the web 110.

[0046] The sliding drive member 226 is used to selectively engage the slider 227. In the initial state, the upper limit of the upward movement of the slider 227 along the slide rail 225 is limited, so that the arch pushes the first rack 222 to move up to the clamping member 228 and abut against the slider 227. At this time, the cutting state is reached, and precise positioning and cutting can be achieved; after the cutting is completed, the sliding drive member 226 releases the limit, and the clamping member 228 pushes the slider 227 to move up synchronously, allowing the positioning component 21 to pass over the flange plate 120 and slide with the web 110, scraping the upper surface of the web 110 close to the cutting component 23, thereby improving the surface quality of the web 110 after cutting. The sliding drive 226 can be a retractable structure such as a pneumatic cylinder, a hydraulic cylinder, or an electric telescopic rod. In its initial state, the sliding drive 226 is extended, and the extended end of the sliding drive 226 limits the position of the slider 227. After the cutting is completed, the sliding drive 226 retracts, allowing the slider 227 to continue to move upward, thereby causing the positioning assembly 21 to continue to move upward, pass over the flange plate 120, and slide relative to the web plate 110 as the arch continues to be transported, and then pass over another flange plate 120, completing the cutting and opening process of one arch. The clamping member 228 can be a cylindrical structure mounted on the lower end of the first rack 222 to improve the balance of the first rack 222.

[0047] like Figure 1 、 Figure 2 and Figure 3 As shown, optionally, the cutting assembly 23 includes a cutting platform 231, a cutting drive 232, a first cutting gear 233, a second cutting gear 234, a rotating member 235, and a cutting member 236. The cutting platform 231 is connected to the lower end of the second rack 224 of the linkage assembly 22, providing support and a mounting base for the entire cutting assembly 23. The cutting drive 232 is provided on the cutting platform 231. The output end of the cutting drive 232 is transmission-connected to the first cutting gear 233. The second cutting gear 234 is rotationally connected to the cutting platform 231, and the second cutting gear 234 is meshed with the first cutting gear 233. The rotating member 235 is connected to the second cutting gear 234. The second cutting gear 234 is used to drive the rotating member 235 to rotate in a horizontal plane. One end of the rotating member 235 is connected to the cutting member 236. The cutting member 236 is used to cut the web 110 of the arch frame and, driven by the rotating member 235, to open a hole.

[0048] The cutting drive 232 is used to provide power for the circular motion of the cutting member 236. The output end of the cutting drive 232 is connected to the first cutting gear 233, driving the first cutting gear 233 to rotate. The first cutting gear 233 meshes with the second cutting gear 234, transmitting the power of the cutting drive 232 to the second cutting gear 234. The second cutting gear 234 is rotatably connected to the cutting platform 231, and rotates under the drive of the first cutting gear 233, driving the rotating member 235 connected to the second cutting gear 234 to rotate in a horizontal plane around the axis of the second cutting gear 234. The end of the rotating member 235 is connected to the cutting member 236, transmitting the rotation of the second cutting gear 234 to the cutting member 236. The cutting member 236 is driven by the rotating member 235 to perform circular motion, thereby cutting and opening the web 110 of the arch frame. In this embodiment, the cutting drive 232 and the cutting member 236 can be located on either side of the second rack 224 to improve the balance and stability of the structure. The cutting drive 232 is a motor capable of forward and reverse rotation; the rotating member 235 can be a rod or plate-shaped structure; the cutting member 236 can be a cutting gun, of any type, such as a plasma cutting gun. The first and second cutting gears 233 and 234 can be covered with a housing to enhance safety and facilitate the arrangement of the cutting gun's power connection structure. In this embodiment, the cutting gun's rotation radius is greater than the combined diameters of the first and second cutting gears 233 and 234 to prevent interference.

[0049] like Figure 1 、 Figure 2 and Figure 3 As shown, optionally, the cutting assembly 23 also includes a connector 237, a sleeve 238 and a locking member 239. One end of the connector 237 is connected to the center of the second cutting gear 234, that is, the connector 237 is connected to the lower end surface of the second cutting gear 234 and is coaxial with the second cutting gear 234. The other end of the connector 237 is connected to the outer wall of the sleeve 238, and the rotating member 235 is slidably inserted into the sleeve 238, so that the horizontal distance between the cutting member 236 and the axis of the second cutting gear 234 can be adjusted, thereby achieving adjustment of the opening radius and adapting to cutting requirements of different sizes or positions. The sleeve 238 is provided with a screw hole, and the locking member 239 can be a bolt. The locking member 239 is screwed into the screw hole, and the end of the locking member 239 can tighten the rotating member 235 to fix the position of the rotating member 235 in the sleeve 238, thereby ensuring the stability of the cutting process and improving the cutting quality.

[0050] like Figure 1 、 Figure 2 and Figure 3As shown, the cutting drive 232 optionally rotates the rotating member 235 alternately clockwise and counterclockwise, changing the cutting direction and enabling more flexible cutting of the arch web 110, thereby improving cutting efficiency and quality. The lowest point of the cutting assembly 23 is higher than the highest point of the flange 120, preventing interference from the flange 120. Furthermore, this alternating cutting direction reduces the risk of excessive entanglement of cables or pipes connected to the cutting member 236, which could affect its usability. It should be noted that the flange plate 120 described in this embodiment that cooperates with the positioning and cutting mechanism 2 is the flange plate 120 located at the front end along the conveying direction; the cooperation relationship between the flange plate 120 located at the rear end and the positioning and cutting mechanism 2 is the same as that of the flange plate 120 at the front end, which will not be repeated here, but at this time the positioning and cutting mechanism 2 is no longer coordinated with the web 110; the sliding drive member 226 is in an extended state in the initial state, and retracts after one cutting is completed until the flange plate 120 at the rear end of the current arch passes through the positioning component 21, and the sliding drive member 226 is reset to the extended state, waiting for the arrival of the next arch. This device can be provided with necessary control mechanisms to facilitate the regulation of the actions of each component as needed. For example: in terms of the start and stop control of the conveying mechanism 1, it is necessary to stop after the clamping member 228 abuts against the slider 227, and to run after the sliding drive member 226 retracts.

[0051] It can be understood that the device also includes necessary structures for connection, support, driving, positioning, limiting and control functions so that the device can operate normally; parameters such as the shape, size, material and setting quantity of each part of the device can be determined as needed as long as the corresponding functions can be achieved.

[0052] The embodiment of the present application discloses an automatic positioning and cutting device for opening a hole in a tunnel-shaped steel arch web. The principle of operation is as follows: the conveying mechanism 1, through the coordinated action of the lower conveying assembly 11 and the upper conveying assembly 12, stably conveys the arch to the positioning and cutting mechanism 2. During the conveying process, the stopper 121 ensures the accuracy of the arch's horizontal position. When the arch is conveyed to the positioning and cutting mechanism 2, the arch abuts the first inclined surface 211 of the positioning assembly 21, pushing the positioning assembly 21 upward. This is then driven downward by the linkage assembly 22, which drives the cutting assembly 23 downward. Upon reaching the cutting station, the cutting drive 232 drives the cutting assembly 23 to cut the arch web 110. After cutting is completed, the sliding drive 226 of the linkage assembly 22 is activated, allowing the positioning assembly 21 to slide over the flange plate 120 and continue to slide with the web 110, cleaning the upper surface of the web 110. Subsequently, as the arch continues to be conveyed, the positioning and cutting mechanism 2 passes over the rear flange plate 120, preparing for the next cut. The entire process is automated. Compared with traditional manual positioning and cutting methods, it greatly improves the efficiency and accuracy of hole opening, reduces manpower input, and reduces labor intensity. At the same time, it also improves the processing quality of the arch frame, meeting the large-scale, high-quality construction needs of modern tunnel projects.

[0053] Example 2 like Figure 4 and Figure 5 As shown, the automatic positioning and cutting device for opening holes in the web of a tunnel steel arch frame in this embodiment is basically the same as that in the first embodiment, except that the device further includes a swing mechanism 3, which is used to drive the arch frame to swing.

[0054] The swing mechanism 3 is vertically disposed between the lower conveying assembly 11 and the upper conveying assembly 12. The swing mechanism 3 includes a supporting base plate 31, a swinging member 32, and a supporting plate 33. The supporting base plate 31 is disposed on the lower conveying assembly 11 and is used to support the swinging member 32 and the supporting plate 33, so that the swing mechanism 3 can be transported as a whole on the lower conveying assembly 11. The swinging member 32 is used to provide a power source. The fixed end of the swinging member 32 is disposed on the supporting base plate 31. The swinging end of the swinging member 32 is connected to the supporting plate 33, so that the supporting plate 33 swings on the supporting base plate 31. The supporting plate 33 is used to support the arch frame so that the arch frame on the supporting plate 33 can swing along the curvature of the arch frame itself, so that the alignment position of the cutting member 236 on the arch frame can be changed along the curvature extension direction of the arch frame, thereby enabling the cutting assembly 23 to realize multiple positions on the arch frame.

[0055] like Figure 4 and Figure 5As shown, the linkage assembly 22 includes a telescopic drive member 229, the fixed end of which is connected to the second rack 224, and the telescopic end of which is connected to the cutting platform 231. The telescopic drive member 229 is used to drive the cutting platform 231 to move vertically relative to the second rack 224. The cutting platform 231 and the second rack 224 are connected by the telescopic drive member 229, so that the vertical distance between the cutting member 236 and the arch can be adjusted. Therefore, when the arch swings, the telescopic drive member 229 can separate the lower end of the cutting member 236 from the arch, reducing the risk of interference. The swing member 32 can be a swing cylinder, the rotating end of which is connected to the support plate 33 via a connector 321. The length of the connector 321 and the location of the swing cylinder are set as needed to enable the arch to rotate along its own arc extension direction. The support plate 33 can be curved, with its curvature consistent with that of the arch frame. Limiting plates (not shown) can be provided at both ends of the support plate 33. These limiting plates cooperate with the ends of the arch frame to reduce relative sliding between the arch frame and the support plate 33 during the swinging process, which could affect positioning accuracy. Two sliding grooves can be provided on the upper side of the support plate 33, corresponding one-to-one with the flange plate 120 and slidingly connected to ensure that the arch frame can be stably supported on the support plate 33. The support plate 33 is slidably connected to the supporting base plate 31. The telescopic drive member 229 can be a structure capable of vertical telescopic movement, such as a pneumatic cylinder, hydraulic cylinder, or electric telescopic rod. The swing mechanism 3 is electrically connected to a control mechanism to achieve coordinated movement.

[0056] like Figure 4 and Figure 5 As shown, when in use, after the cutting assembly 23 opens a hole in the web, the arch frame is driven to swing by the swing mechanism 3 so that multiple holes can be opened on the web. The swing direction and swing angle of the swing member 32 are set as needed. At the same time, the arch frame is always in contact with the positioning assembly 21 during the swing. The telescopic drive member 229 is used to drive the cutting member 236 to move up a fixed distance after one hole is cut and the arch frame needs to swing to cut the next hole, so that the cutting member 236 temporarily separates from the web. After one swing is completed, the telescopic drive member 229 drives the cutting member 236 to move down a fixed distance for cutting. The fixed distance is set as needed. The swing mechanism 3 drives the arch frame to swing back and forth clockwise for a first angle and counterclockwise for a second angle, and then returns to the initial position to improve the conveying stability.

[0057] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. An automatic positioning and cutting device for opening holes in tunnel steel arch webs, characterized in that: include: A conveying mechanism (1), the conveying mechanism (1) is used to convey the arch frame so that the web (110) of the arch frame is placed horizontally; A positioning and cutting mechanism (2) comprising a positioning assembly (21), a linkage assembly (22) and a cutting assembly (23); along the arch conveying direction, the positioning assembly (21) is arranged in front of the cutting assembly (23); the linkage assembly (22) is respectively connected to the positioning assembly (21) and the cutting assembly (23); the lowest height of the positioning assembly (21) is lower than the lowest height of the cutting assembly (23); the weight of the positioning assembly (21) is greater than the weight of the cutting assembly (23); The weight of the positioning component (21) is that the positioning component (21) includes a first inclined surface (211). When the arch is transported along the transport direction, the flange plate (120) of the arch can abut against the first inclined surface (211) and slide relatively, pushing the positioning component (21) to move up a preset distance. The upward movement of the positioning component (21) drives the cutting component (23) to move down through the linkage component (22), so that the cutting component (23) is close to the web (110) of the arch, and the cutting component (23) is used to cut a hole in the web (110) of the arch.

2. The automatic positioning and cutting device for opening holes in the web of a tunnel steel arch frame according to claim 1 is characterized in that: The positioning assembly (21) includes a second inclined surface (212), which is arranged to be separated from the first inclined surface (211). The second inclined surface (212) is used to slide with the flange plate (120) of the arch frame, so that the positioning assembly (21) can slowly descend after moving up.

3. The automatic positioning and cutting device for opening holes in the web of a tunnel steel arch frame according to claim 1 is characterized in that: The linkage assembly (22) comprises a support frame (221), a first rack (222), a linkage gear (223) and a second rack (224); the support frame (221) is mounted above the conveying mechanism (1); the first rack (222) and the second rack (224) are both slidably connected to the support frame (221); the linkage gear (223) is rotatably connected to the support frame (221); the first rack (222) and the second rack (224) are both engaged with the linkage gear (223) and are respectively arranged on both sides of the linkage gear (223); the first rack (222) is connected to the positioning assembly (21); the second rack (224) is connected to the cutting assembly (23); a limit block (2221) is provided on the top of the first rack (222); the limit block (2221) is used to cooperate with the support frame (221) to limit the lowest position of the positioning assembly (21).

4. The automatic positioning and cutting device for opening holes in the web of a tunnel steel arch frame according to claim 3 is characterized in that: The linkage assembly (22) includes a slide rail (225), a sliding drive member (226) and a slider (227); a clamping member (228) is provided at the lower end of the first rack (222); the slide rail (225) is connected to the support frame (221); the slider (227) is slidably connected to the slide rail (225); the sliding drive member (226) is provided on the slide rail (225); the sliding drive member (226) is provided above the slider (227); the telescopic end of the sliding drive member (226) is used to selectively clamp the slider (227); the slider (227) is slidably connected to the first rack (222); The rack (222) and the slider (227) are arranged above the clamping member (228). In the initial state, the sliding drive member (226) is used to limit the upward movement distance of the slider (227). The arch pushes the first rack (222) to move upward until the clamping member (228) abuts against the slider (227) and reaches the cutting state. After the cutting is completed, the sliding drive member (226) releases the limit on the slider (227), and the clamping member (228) can push the slider (227) to move upward, so that the positioning assembly (21) can pass over the flange plate (120) and slide with the web (110).

5. The automatic positioning and cutting device for opening holes in the web of a tunnel steel arch frame according to claim 3 is characterized in that: The cutting assembly (23) comprises a cutting platform (231), a cutting drive (232), a first cutting gear (233), a second cutting gear (234), a rotating member (235) and a cutting member (236). The cutting platform (231) is connected to the linkage assembly (22). The cutting drive (232) is arranged on the cutting platform (231). The output end of the cutting drive (232) is transmission-connected to the first cutting gear (233). The second cutting gear (234) is rotationally connected to the cutting platform (231). The second cutting gear (234) is meshed with the first cutting gear (233). The rotating member (235) is connected to the second cutting gear (234). The second cutting gear (234) is used to drive the rotating member (235) to rotate in a horizontal plane. One end of the rotating member (235) is connected to the cutting member (236). The cutting member (236) is used to cut the web (110) of the arch frame.

6. The automatic positioning and cutting device for opening holes in the web of a tunnel steel arch frame according to claim 5, characterized in that: The cutting assembly (23) further comprises a connecting member (237), a sleeve (238) and a locking member (239), one end of the connecting member (237) being connected to the center of the second cutting gear (234), and the other end of the connecting member (237) being connected to the outer wall of the sleeve (238), the rotating member (235) being slidably arranged in the sleeve (238) so that the horizontal distance between the cutting member (236) and the axis of the second cutting gear (234) is adjustable, the sleeve (238) being provided with a screw hole, the locking member (239) being screwed to the screw hole, and the end of the locking member (239) being able to press against the rotating member (235).

7. The automatic positioning and cutting device for opening holes in the web of a tunnel steel arch frame according to claim 5, characterized in that: The cutting drive member (232) causes the rotating member (235) to rotate alternately in clockwise and counterclockwise directions.

8. The automatic positioning and cutting device for opening holes in the web of a tunnel steel arch frame according to claim 5, characterized in that: The conveying mechanism (1) comprises two groups of lower conveying assemblies (11), the two groups of lower conveying assemblies (11) are arranged horizontally at intervals and connected by a plurality of connecting assemblies, so that the arch frame is erected on the two groups of lower conveying assemblies (11), and the two groups of lower conveying assemblies (11) move synchronously to convey the arch frame.

9. The automatic positioning and cutting device for opening holes in the web of a tunnel steel arch frame according to claim 8, characterized in that: The conveying mechanism (1) includes two groups of upper conveying components (12), the upper conveying components (12) corresponding to the lower conveying components (11), the upper conveying components (12) are arranged above the lower conveying components (11), and an arch frame is clamped between the upper conveying components (12) and the lower conveying components (11) in the vertical direction. The upper conveying components (12) abut against the upper end of the arch frame, and the corresponding upper conveying components (12) and the lower conveying components (11) cooperate to convey the arch frame.

10. The automatic positioning and cutting device for opening holes in the web of a tunnel steel arch frame according to claim 9, characterized in that: The invention also includes a swing mechanism (3), wherein the swing mechanism (3) is arranged between the lower conveying assembly (11) and the upper conveying assembly (12) in the vertical direction, and the swing mechanism (3) includes a bearing base plate (31), a swing member (32) and a supporting plate (33), wherein the bearing base plate (31) is arranged on the lower conveying assembly (11), the fixed end of the swing member (32) is arranged on the bearing base plate (31), and the swing end of the swing member (32) is connected to the supporting plate (33), so that the supporting plate (33) ) swings on the bearing base plate (31), the supporting plate (33) is used to support the arch frame so that the arch frame swings along the arc direction of the arch frame itself, the linkage assembly (22) includes a telescopic drive member (229), the fixed end of the telescopic drive member (229) is connected to the second rack (224), the telescopic end of the telescopic drive member (229) is connected to the cutting platform (231), and the telescopic drive member (229) is used to drive the cutting platform (231) to move vertically relative to the second rack (224).

Images