Tunnel second lining formwork polishing device

Abstract

The present application relates to the technical field of tunnel secondary lining template polishing, and discloses a tunnel secondary lining template polishing device, which comprises a mounting frame, a side polishing assembly is arranged at the top of the mounting frame, a surface polishing assembly is arranged on the left inner wall of the mounting frame, and a mounting plate is fixedly arranged on the left side of the mounting frame. In the present application, the multidimensional limiting and interval adjustable structure of the limiting assembly is used to realize accurate limiting and stable and continuous conveying of the template. The limiting assembly is used to constrain the template conveying path from above and below and from multiple directions through multiple sets of limiting rollers one, limiting rollers two and limiting rollers three, the adjusting rod is used to drive the adjusting plate and the limiting rollers three to move, the clamping interval can be flexibly adjusted, the templates of different thickness specifications can be adapted, the templates can be prevented from deviating and moving during polishing, the polishing position is accurate, and the problems of eccentric polishing and missed polishing are avoided. The conveying drive of the conveying roller can be used to realize continuous feeding and polishing of the template, and the continuity and smoothness of the operation are improved.

Description

Technical Field

[0001] This invention relates to the field of tunnel secondary lining template grinding technology, and in particular to a tunnel secondary lining template grinding device. Background Technology

[0002] The tunnel secondary lining formwork is the core forming tool for the secondary lining concrete pouring. It is mostly a steel splicing structure, and its surface smoothness and splicing accuracy directly determine the forming quality of the secondary lining concrete and the waterproof performance of the joints. After each demolding, the surface of the formwork will be covered with concrete residue, hardened cement scale, and oxide rust. Burrs and misalignments are easily generated on the spliced ​​sides. If it is reused directly without grinding and cleaning, it will cause defects such as sticking, pitting of the lining surface, and grout leakage at the joints. It will also aggravate the corrosion and wear of the formwork. Therefore, grinding treatment must be performed before each reuse.

[0003] Traditional template grinding relies heavily on manual labor. The enclosed space inside the tunnel and the high concentration of grinding dust pose a high occupational health risk to workers. Moreover, since templates are large-sized components, manual labor is inefficient, and uneven grinding force and speed can easily lead to problems such as missed grinding or over-grinding. The grinding quality is unstable and it is difficult to meet the efficiency and quality requirements for template turnover.

[0004] Most existing mechanical grinding equipment is single-station flat grinding, which can only process the front of the template and cannot grind the sides and joints at the same time. It requires multiple grinding processes, which is cumbersome and inefficient. Inadequate grinding of the side joints will directly affect the splicing accuracy of the template and the sealing of the joints, thus restricting the improvement of the secondary lining construction quality. Most grinding equipment lacks an adaptive floating structure and flexible limiting mechanism, which cannot adapt to the size deviation and surface undulation of the template. It is difficult to maintain uniform grinding pressure, which can easily lead to problems such as local over-grinding that reduces the thickness of the template wall or local under-grinding that leaves residue. The equipment has poor adaptability and cannot meet the grinding needs of templates of different specifications.

[0005] To address the aforementioned issues, a tunnel secondary lining template grinding device is proposed. Summary of the Invention

[0006] To overcome the above shortcomings, this invention provides a tunnel secondary lining template grinding device, which aims to improve the problems of high occupational health risks, low efficiency and unstable grinding quality of traditional manual template grinding. Existing mechanical grinding is mostly single-station flat grinding, which cannot process the sides at the same time, and lacks an adaptive structure, resulting in poor adaptability and difficulty in meeting the efficiency and quality requirements of template grinding.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: a tunnel secondary lining template grinding device, including a mounting frame, a side grinding component is provided at the top center of the mounting frame, a surface grinding component is provided on the left side of the inner wall of the mounting frame, a mounting plate is fixedly installed on the left side of the mounting frame, a limit component is provided at the top of the mounting plate, and a plurality of limit rollers are rotatably connected to the top right side of the mounting frame. The limiting assembly includes a base, which is fixedly installed on the top rear side of the mounting plate. A motor four is fixedly installed on the top of the base. A drive wheel two is fixedly connected to the output end of the motor four. Two belts two are sleeved on the outer wall of the drive wheel two. A driven wheel two is sleeved on the inner wall of each of the two belts two. A drive wheel three is fixedly installed on the front side of the driven wheel two. A limiting roller one is fixedly installed on the front side of the inner wall of the drive wheel three. A belt three is sleeved on the outer wall of the drive wheel three. A driven wheel three is sleeved on the inner wall of the belt three. A limiting roller two is fixedly installed on the front side of the inner wall of the driven wheel three. Multiple connecting plates three are fixedly installed on the top left and right ends of the top of the mounting plate. An adjusting plate is slidably connected to the top of the inner wall of the multiple connecting plates three. An adjusting rod is threadedly connected to the top of the inner wall of the adjusting plate. A limiting roller three is rotatably connected to the bottom side of the inner wall of the multiple adjusting plates.

[0008] As a further description of the above technical solution: Connecting frames are fixedly installed on both the left and right sides of the mounting frame, and multiple conveying rollers are rotatably connected to the inner wall of the connecting frames.

[0009] As a further description of the above technical solution: The surface polishing assembly includes two connecting plates, both of which are fixedly installed on the front and rear ends of the left side of the inner wall of the mounting frame. Multiple spring rods are fixedly installed on the inner side of each connecting plate, and a connecting rod is fixedly installed on the top of each spring rod. A connecting plate is installed on the outer side of each connecting rod. A T-block is slidably connected to the top of each connecting rod. Connecting rods are fixedly installed on adjacent sides of the two T-blocks. An adjusting wheel is fixedly installed on the front side of each connecting rod. Fixed plates are fixedly connected diagonally on the outer side of each connecting plate. A motor is fixedly installed at the bottom of each fixed plate. A drive wheel is fixedly connected to the output end of the motor. Two belts are sleeved on the outer wall of the drive wheel, and driven wheels are sleeved on the inner walls of the two belts. A polishing roller is fixedly connected to the inner wall of the driven wheel. Two polishing rollers are rotatably connected to adjacent sides of the connecting plate.

[0010] As a further description of the above technical solution: The side grinding assembly includes a motor one, which is fixedly installed on the top center front side of the mounting frame. The output end of the motor one is fixedly connected to a drive rod. Two movable plates are slidably connected to the outer wall of the drive rod. Multiple limiting wheels are rotatably connected to the bottom of the two movable plates. U-shaped plates are slidably connected to the outer sides of the multiple limiting wheels. A motor two is fixedly installed on the inner wall of the two movable plates. A grinding wheel is fixedly connected to the output end of the motor two.

[0011] As a further description of the above technical solution: The bottom end face of the U-shaped plate is fixedly connected to the top surface of the mounting frame. The opening of the U-shaped plate faces inward. The two ends of the drive rod pass through the two side walls of the U-shaped plate respectively. The end of the drive rod is rotatably connected to the inner wall of the side wall of the U-shaped plate. The two movable plates are symmetrically arranged on the left and right sections of the drive rod.

[0012] As a further description of the above technical solution: Multiple limiting rollers are evenly spaced along the top right edge of the mounting frame. The bottom shaft of each limiting roller is inserted into the top mounting hole of the mounting frame. The shaft of each limiting roller is rotatably connected to the inner wall of the mounting frame. The axes of the multiple limiting rollers are arranged vertically, and the outer wheel surfaces are in the same vertical plane.

[0013] As a further description of the above technical solution: Multiple conveying rollers are evenly spaced along the length of the connecting frame. The two ends of the conveying rollers pass through the two side walls of the connecting frame, and the end rods of the conveying rollers are rotatably connected to the inner side wall of the connecting frame. The two connecting frames are symmetrically fixed to the left and right outer walls of the mounting frame, and the axis of the conveying rollers is arranged horizontally.

[0014] As a further description of the above technical solution: The two ends of the grinding roller 1 pass through the driven wheels 1 on both sides respectively. The end of the grinding roller 1 is coaxially and fixedly connected to the inner wall of the driven wheel 1. The two grinding rollers 2 are arranged in parallel on the upper and lower sides of the grinding roller 1 respectively. The two ends of the grinding roller 2 are rotatably connected to the inner wall of the corresponding side connecting plate 2.

[0015] As a further description of the above technical solution: The rear end rod of the first limiting roller is coaxially and fixedly connected to the inner wall of the third driving wheel, and the rear end rod of the second limiting roller is coaxially and fixedly connected to the inner wall of the third driven wheel. The axes of the first limiting roller and the second limiting roller are on the same horizontal plane, and their wheel surfaces are arranged at intervals relative to each other.

[0016] The present invention has the following beneficial effects: 1. In this invention, the multi-dimensional limiting and adjustable spacing structure of the limiting component enables precise limiting and stable continuous conveying of the template. The limiting component constrains the template conveying path from multiple directions, including top, bottom, and sides, through multiple sets of limiting rollers one, two, and three. With the help of the adjusting rod, the adjusting plate and the limiting roller three can be moved, which can flexibly adjust the clamping spacing to adapt to templates of different thicknesses and prevent the template from shifting or moving during the grinding process, ensuring accurate grinding position and avoiding uneven grinding and missed grinding problems. With the conveying drive of the conveying roller, continuous feeding and grinding of the template can be achieved, improving the continuity and smoothness of the operation.

[0017] 2. In this invention, the dual-station collaborative arrangement of the surface grinding component and the side grinding component enables simultaneous grinding of the template plane and the side splicing seam. The multiple grinding rollers one and two of the surface grinding component correspond to the front of the template, and together with the floating support structure formed by the spring rod and the connecting rod one, they adaptively fit the template surface, and the grinding pressure is uniform and stable. The movable grinding wheel of the side grinding component is aligned with the side of the template and the splicing seam, and simultaneously cleans the side residue and splicing burrs. The full-section grinding operation can be completed in one feed, without the need for multi-stage processing, which greatly improves the grinding efficiency, while ensuring the grinding accuracy of the splicing edge and improving the sealing of the template after splicing.

[0018] 3. In this invention, the floating adaptive grinding structure ensures uniform grinding quality and effectively extends the service life of the template. The floating spring rod structure and the sliding adjustment structure of the T-block of the surface grinding component can adapt to the slight undulations and dimensional deviations of the template surface, avoiding over-grinding or under-grinding defects caused by rigid grinding. The grinding roller driven by constant speed produces uniform grinding patterns, which not only removes concrete residue, oxidation rust and splicing burrs, but also avoids excessive wear on the template substrate, improves the stability of grinding quality, effectively extends the turnover service life of the template, and ensures the forming appearance and structural quality of the secondary lining concrete.

[0019] 4. In this invention, the integrated conveying, limiting, and grinding process is adapted to the narrow construction scenario of tunnels, and the efficiency of template turnover is accelerated. The grinding device integrates the conveying roller, limiting component, and double grinding component into one unit, which can directly connect to the template turnover station of the secondary lining trolley. There is no need for additional template transfer, the on-site deployment is convenient, it is adapted to the narrow construction space inside the tunnel, greatly shortens the template cleaning and turnover cycle, accelerates the secondary lining construction cycle, and improves the overall construction efficiency of the tunnel project. Attached Figure Description

[0020] Figure 1 This is a perspective view of a tunnel secondary lining template grinding device proposed in this invention; Figure 2 This is a schematic diagram of the mounting plate structure of a tunnel secondary lining template grinding device proposed in this invention; Figure 3This is a schematic diagram of the mounting frame structure of a tunnel secondary lining template grinding device proposed in this invention; Figure 4 This is a schematic diagram of the side grinding component structure of a tunnel secondary lining template grinding device proposed in this invention; Figure 5 This is a schematic diagram of the moving plate structure of a tunnel secondary lining template grinding device proposed in this invention; Figure 6 This is a schematic diagram of the surface grinding component structure of a tunnel secondary lining template grinding device proposed in this invention; Figure 7 This is a schematic diagram of the grinding roller structure of a tunnel secondary lining template grinding device proposed in this invention; Figure 8 This is a schematic diagram of the limiting component structure of a tunnel secondary lining template grinding device proposed in this invention; Figure 9 This is a schematic diagram of the limiting roller structure of a tunnel secondary lining template grinding device proposed in this invention.

[0021] Legend: 1. Mounting frame; 2. Connecting frame; 3. Conveyor roller; 4. Mounting plate; 5. Side grinding assembly; 501. Motor 1; 502. Drive rod; 503. Moving plate; 504. Limiting wheel; 505. U-shaped plate; 506. Motor 2; 507. Grinding wheel; 6. Surface polishing assembly; 601. Connecting plate one; 602. Spring rod; 603. Connecting rod one; 604. Connecting plate two; 605. T-block; 606. Connecting rod two; 607. Adjusting wheel; 608. Fixing plate; 609. Motor three; 610. Drive wheel one; 611. Belt one; 612. Driven wheel one; 613. Polishing roller one; 614. Polishing roller two; 7. Limiting assembly; 701. Base; 702. Motor 4; 703. Drive wheel 2; 704. Belt 2; 705. Driven wheel 2; 706. Drive wheel 3; 707. Belt 3; 708. Driven wheel 3; 709. Limiting roller 1; 710. Limiting roller 2; 711. Limiting roller 3; 712. Connecting plate 3; 713. Adjusting plate; 714. Adjusting rod; 8. Limiting roller four. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] Reference Figure 1-9 This invention provides an embodiment of a tunnel secondary lining template grinding device. The mounting frame 1 serves as the main load-bearing base of the device, employing a portal rigid frame structure to provide stable installation support for each functional component. The overall structure is compact and can be directly connected to the secondary lining trolley workstation, adapting to the confined construction space inside the tunnel. A side grinding component 5 is located at the top center of the mounting frame 1, corresponding to the side of the template and the splice joint, enabling side grinding operations. A surface grinding component 6 is located on the left side of the inner wall of the mounting frame 1, corresponding to the front area of ​​the template. The mounting frame 1 is equipped with a mounting plate 4 fixedly installed on the left side. The top of the mounting plate 4 is equipped with a limit component 7, which forms a multi-dimensional limit and active conveying for the template on the feeding side. Multiple limit rollers 8 are rotatably connected to the top right side of the mounting frame 1, which form a lateral limit for the template on the discharge side. The whole adopts a layout of feeding limit, dual-station synchronous grinding, and discharge limit. The template can complete the full-section grinding of the surface and sides in one feeding, without the need for multi-process processing, which greatly improves the grinding efficiency.

[0024] The limiting component 7 includes a base 701, which is fixedly installed on the top rear side of the mounting plate 4 to provide mounting support for the limiting drive component. A motor 702 is fixedly installed on the top of the base 701 to provide driving power for the active rotation of the limiting roller. A drive wheel 703 is fixedly connected to the output end of the motor 702. Two belts 704 are fitted onto the outer wall of the drive wheel 703, and driven wheels 705 are fitted onto the inner walls of both belts 704, forming a double-belt drive pair to synchronously transmit rotational power. A drive wheel 706 is fixedly installed on the front side of the driven wheel 705. A limiting roller 709 is fixedly installed on the front side of the inner wall of the drive wheel 706. A belt 707 is fitted onto the outer wall of the drive wheel 706. The inner wall is fitted with a driven wheel 708. A limiting roller 710 is fixedly installed on the front side of the inner wall of the driven wheel 708, forming an active limiting roller group with upper and lower opposite sides. Multiple connecting plates 712 are fixedly installed on the top left and right ends of the mounting plate 4. An adjusting plate 713 is slidably connected to the top of the inner wall of the multiple connecting plates 712. An adjusting rod 714 is threadedly connected to the top of the inner wall of the adjusting plate 713. A limiting roller 711 is rotatably connected to the bottom side of the inner wall of the multiple adjusting plates 713. Multiple sets of limiting rollers constrain the template conveying path from the top, bottom, and sides. Rotating the adjusting rod can drive the adjusting plate and the limiting roller 711 to move, flexibly adjust the clamping distance, adapt to templates of different thicknesses, prevent the template from shifting or moving during the grinding process, and make the grinding position accurate.

[0025] Connecting frames 2 are fixedly installed on both the left and right sides of the mounting frame 1. The connecting frames 2 adopt a side-mounted frame structure and are symmetrically arranged on the feeding and discharging sides of the mounting frame, forming feeding and discharging conveying sections respectively. Multiple conveying rollers 3 are rotatably connected to the inner wall of the connecting frame 2. The conveying rollers are evenly spaced along the length of the connecting frame, and the top of the roller surface is on the same horizontal plane, forming a continuous conveying support surface. The symmetrical connecting frames on both sides, together with multiple sets of conveying rollers, can stably support large-sized steel templates. The conveying process is smooth and without jamming. With the active drive of the limiting component, continuous feeding and grinding of the template can be realized, improving the continuity and smoothness of the operation. There is no need to manually push the template section by section, reducing the intensity of manual labor and adapting to the grinding operation scenario at the tunnel site.

[0026] The surface polishing assembly 6 includes two connecting plates 601, both of which are fixedly installed on the front and rear ends of the left side of the inner wall of the mounting frame 1, symmetrically arranged to form a double-sided support structure. Multiple spring rods 602 are fixedly installed on the inner side of each connecting plate 601, and connecting rods 603 are fixedly installed on the top of each spring rod 602. The spring rods are arranged vertically to form an elastic floating support structure. A connecting plate 604 is installed on the outer side of the connecting rods 603, and a T-block 605 is slidably connected to the top of the connecting rods 603. Connecting rods 606 are fixedly installed on adjacent sides of the two T-blocks 605. An adjusting wheel 607 is fixedly installed on the front side of the connecting rods 606 to adjust the distance between the two polishing mechanisms. Fixed plates 608 are fixedly connected to the outer diagonal sides of plate 2 604. A motor 3 609 is fixedly installed at the bottom of the fixed plate 608 to provide rotational power for the grinding roller. A drive wheel 1 610 is fixedly connected to the output end of motor 3 609. Two belts 1 611 are sleeved on the outer wall of drive wheel 1 610. A driven wheel 1 612 is sleeved on the inner wall of the two belts 1 611. A grinding roller 1 613 is fixedly connected to the inner wall of driven wheel 1 612. Two grinding rollers 2 614 are rotatably connected to the adjacent side of connecting plate 2 604. The spring rod floating structure can adapt to the slight undulations of the template surface. The grinding pressure is uniform and stable, which not only removes concrete residue and rust, but also avoids excessive wear on the template substrate, effectively extending the service life of the template.

[0027] The side grinding assembly 5 includes a motor 501, which is fixedly mounted on the top center front side of the mounting bracket 1, providing driving power for the spacing adjustment of the side grinding mechanism. A drive rod 502 is fixedly connected to the output end of the motor 501. The drive rod 502 adopts a bidirectional lead screw structure, which can synchronously drive the two side components to move towards or away from each other. Two movable plates 503 are slidably connected to the outer wall of the drive rod 502. Multiple limiting wheels 504 are rotatably connected to the bottom of the two movable plates 503. U-shaped plates 505 are rolledly connected to the outer side of each of the two movable plates 503. The U-shaped plates provide movement guidance and support for the movable plates. Motor 2 506 is fixedly installed on the inner wall of each of the two movable plates 503. Grinding wheels 507 are fixedly connected to the output end of motor 2 506. The grinding wheels are arranged vertically with their working surfaces facing the side of the template. The movable grinding wheels can be adapted to templates of different widths. They are aligned with the side of the template and the splicing seam to simultaneously clean the side residue and splicing burrs, ensuring the grinding accuracy of the splicing edge and improving the sealing of the template after splicing.

[0028] The bottom end face of the U-shaped plate 505 is fixedly connected to the top surface of the mounting bracket 1. The opening of the U-shaped plate 505 faces inward, forming an inward groove guide rail structure to provide rolling guidance for the limit wheel. The two ends of the drive rod 502 pass through the two side walls of the U-shaped plate 505 respectively. The end of the drive rod 502 is rotatably connected to the inner wall of the side wall of the U-shaped plate 505. The two side walls provide support for the drive rod at both ends, making the drive rod rotate smoothly and coaxially without radial wobble. The two moving plates 503 are symmetrically arranged on the left and right sections of the drive rod 502 and are respectively engaged with the positive and negative thread sections of the double-acting screw. When the drive rod rotates, it can drive the two moving plates to move synchronously in opposite directions or in opposite directions. The spacing adjustment is precise and synchronous, so that the grinding force of the grinding wheels on both sides is consistent, avoiding uneven grinding on one side and ensuring uniform grinding quality on the side.

[0029] Multiple limiting rollers 48 are evenly spaced along the top right edge of the mounting frame 1, forming a lateral limiting row on the discharge side. The bottom shaft of the limiting rollers 48 is inserted into the top mounting hole of the mounting frame 1. The shaft of the limiting rollers 48 is rotatably connected to the inner wall of the mounting frame 1, and can rotate freely with the template conveyor. The rolling friction resistance is small and does not hinder the template feed. The axes of the multiple limiting rollers 48 are arranged vertically, and the outer wheel surfaces are in the same vertical plane. They cooperate with the limiting rollers 3711 on the feed side to form a lateral limiting channel that runs through the front and back, constraining the left and right displacement of the template, preventing the template from shifting in the discharge section, and ensuring accurate positioning of the template throughout the conveying process. This avoids uneven grinding or missed grinding caused by shifting.

[0030] Multiple conveyor rollers 3 are evenly spaced along the length of the connecting frame 2, with equal spacing between the rollers to form a continuous conveying support surface. This ensures uniform support at the bottom of the template and prevents tilting or jamming during conveying. The shafts at both ends of the conveyor rollers 3 penetrate the side walls of the connecting frame 2, and the end rods of the conveyor rollers 3 are rotatably connected to the inner side walls of the connecting frame 2. The two side walls provide end support for the conveyor rollers, ensuring smooth rotation and strong load-bearing capacity. The two connecting frames 2 are symmetrically fixed to the left and right outer walls of the mounting frame 1, corresponding to the feeding and discharging positions, respectively. The axis of the conveyor rollers 3 is arranged horizontally, with the roller surface protruding from the top surface of the connecting frame. The symmetrically arranged conveying structure allows for smooth feeding and discharging, can accommodate templates of different lengths, and enables continuous and uninterrupted grinding operations, improving overall work efficiency.

[0031] The two ends of the grinding roller 613 pass through the driven wheels 612 on both sides. The end of the grinding roller 613 is coaxially and fixedly connected to the inner wall of the driven wheel 612, and rotates synchronously to transmit rotational power. The transmission is smooth and slip-free, and the grinding speed is uniform and stable. The two grinding rollers 614 are arranged in parallel on the upper and lower sides of the grinding roller 613, forming a three-roller grinding structure, which expands the coverage of the front grinding and reduces the grinding blind spots. The two ends of the shaft of the grinding roller 614 are rotatably connected to the inner wall of the corresponding side connecting plate 604, and can adaptively rotate slightly according to the grinding pressure. With the cooperation of multiple sets of grinding rollers, the main area of ​​the front of the template can be covered at one time. The grinding texture is uniform, and the concrete residue, cement scale and oxide rust on the surface are removed, improving the surface grinding quality and efficiency.

[0032] The rear end rod of the first limiting roller 709 is coaxially and fixedly connected to the inner wall of the third driving wheel 706, and rotates synchronously with the third driving wheel to form an active conveying roller structure. The rear end rod of the second limiting roller 710 is coaxially and fixedly connected to the inner wall of the third driven wheel 708, and rotates synchronously with the third driven wheel, corresponding vertically to the first limiting roller. The axes of the first limiting roller 709 and the second limiting roller 710 are on the same horizontal plane, and their wheel surfaces are arranged relatively alternately to form an upper and lower clamping channel. The fourth motor drives the first limiting roller to rotate actively through belt drive. In conjunction with the driven rotation of the second limiting roller, it can actively drive the template to move forward. The feed speed is uniform and controllable, so that the template grinding speed is stable, avoiding over-grinding or under-grinding caused by uneven speed, and improving the uniformity of grinding quality.

[0033] Working principle: During the feeding and limiting conveying stage, the template to be ground is fed in from the end of the connecting frame 2 on the feeding side. The bottom is supported by the conveying roller 3. The template is pushed forward into the limiting area of ​​the limiting component 7. The motor 4 702 starts, driving the drive wheel 2 703 to rotate. Through the two belts 2 704, the driven wheels 2 705 on both sides rotate synchronously, which in turn drives the drive wheel 3 706 to rotate. Through the belt 3 707, the driven wheel 3 708 rotates, and finally drives the limiting roller 1 709 and the limiting roller 2 710 to rotate synchronously relative to each other. The limiting rollers clamp the template from the top and bottom and actively convey it forward, making the template feeding speed uniform and stable. At the same time, the limiting rollers 3 711 on both sides constrain the template from the side, forming a multi-dimensional limiting with the upper and lower limiting rollers to prevent the template from moving up and down or shifting left and right during the conveying process. This ensures that the template enters the grinding station accurately and avoids uneven grinding or missed grinding caused by positional deviation.

[0034] During the surface floating grinding stage, when the template enters the grinding area of ​​the surface grinding component 6, the motor 609 starts, driving the drive wheel 610 to rotate. Through the two belts 611, the driven wheels 612 on both sides rotate synchronously, which in turn drives the grinding roller 613 to rotate at high speed. Together with the grinding rollers 614 on the upper and lower sides, the front of the template is continuously ground. During the grinding process, the elastic floating support structure formed by the spring rod 602 can adapt to the slight undulations and deformations of the template surface, so that the grinding roller always fits the template surface. The grinding pressure is uniform and stable, which not only removes concrete residue, hardened cement scale and oxidation rust, but also avoids the problem of over-grinding and wall reduction caused by rigid pressure, protects the template base, and extends the service life of the template. The T-block 605 can slide along the connecting rod 603, and with the adjustment wheel 607, the distance between the grinding mechanisms on both sides can be adjusted to adapt to templates of different widths.

[0035] During the simultaneous side grinding stage, while the front of the template is being ground, the side grinding component 5 simultaneously grinds the sides and joints of the template. Motor 2 506 starts, driving the grinding wheel 507 to rotate at high speed to grind the sides of the template, cleaning concrete residue and splicing burrs, ensuring the flatness and precision of the splicing edges, and improving the sealing of subsequent template splicing. Motor 1 501 can drive the drive rod 502 to rotate, which drives two moving plates 503 to move towards or away from each other along the U-shaped plate 505 through bidirectional screw transmission, adjusting the distance between the two grinding wheels 507 to adapt to templates of different thicknesses, ensuring that the grinding wheels always fit the sides of the template. The limiting wheel 504 rolls along the U-shaped plate, providing stable movement guidance and support for the moving plates, keeping the distance adjustment process smooth and the grinding position accurate.

[0036] During the discharge guiding and limiting stage, after the template is polished, it is output from the right discharge section of the mounting frame 1. The bottom is supported by the conveyor roller 3 on the discharge side, and the right side is laterally limited by multiple sets of limiting rollers 8 to constrain the left and right displacement of the template, so that the template is output smoothly and avoids deviation and scraping of the polished surface during the discharge process, thus protecting the surface quality of the polished template. During continuous operation, subsequent templates can be fed in from the feeding side in sequence. The equipment continuously completes the entire process of conveying, limiting, polishing and discharging without manual intervention in each section, realizing assembly line-style polishing operation, greatly improving polishing efficiency, shortening the template cleaning and turnover cycle, and accelerating the secondary lining construction cycle.

[0037] In the specification adaptive adjustment stage, the limit and grinding parameters of the device can be pre-adjusted for templates of different thicknesses and widths. When adjusting the limit distance, the adjusting rod 714 is rotated, and the adjusting plate 713 is driven to slide along the connecting plate 712 through the threaded transmission, which in turn drives the limit rollers 711 on both sides to move towards or away from each other, adjusting the lateral clamping distance to adapt to templates of different thicknesses. When adjusting the side grinding distance, the motor 501 is started to drive the drive rod 502 to rotate, adjusting the distance between the two grinding wheels 507 to adapt to the side grinding of templates of different widths. The multi-dimensional adjustable structure can adapt to various specifications of secondary lining templates. The equipment has strong versatility and can meet the template grinding needs of different tunnel projects without changing the tooling.

[0038] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A tunnel secondary lining template grinding device, comprising a mounting frame (1), characterized in that: The mounting frame (1) has a side grinding component (5) at the top center, a surface grinding component (6) on the left side of the inner wall of the mounting frame (1), a mounting plate (4) fixedly installed on the left side of the mounting frame (1), a limit component (7) on the top of the mounting plate (4), and multiple limit rollers (8) rotatably connected to the top right side of the mounting frame (1). The limiting component (7) includes a base (701), which is fixedly installed on the top rear side of the mounting plate (4). A motor (702) is fixedly installed on the top of the base (701). A drive wheel (703) is fixedly connected to the output end of the motor (702). Two belts (704) are sleeved on the outer wall of the drive wheel (703). Drive wheels (705) are sleeved on the inner walls of the two belts (704). A drive wheel (706) is fixedly installed on the front side of the drive wheel (705). A limiting roller (709) is fixedly installed on the front side of the inner wall of the drive wheel (706). The outer wall of the drive wheel three (706) is fitted with a belt three (707), the inner wall of the belt three (707) is fitted with a driven wheel three (708), the front side of the inner wall of the driven wheel three (708) is fixedly installed with a limiting roller two (710), the top left and right ends of the mounting plate (4) are fixedly installed with multiple connecting plates three (712), the top of the inner wall of the multiple connecting plates three (712) is slidably connected with an adjusting plate (713), the top of the inner wall of the adjusting plate (713) is threadedly connected with an adjusting rod (714), and the bottom of the inner wall of the multiple adjusting plates (713) is rotatably connected with a limiting roller three (711) on one side close to each other.

2. The tunnel secondary lining template grinding device according to claim 1, characterized in that: The mounting frame (1) is fixedly installed with connecting frames (2) on both the left and right sides, and multiple conveying rollers (3) are rotatably connected to the inner wall of the connecting frame (2).

3. The tunnel secondary lining template grinding device according to claim 1, characterized in that: The surface polishing assembly (6) includes two connecting plates (601). Both connecting plates (601) are fixedly installed on the front and rear ends of the left side of the inner wall of the mounting bracket (1). Multiple spring rods (602) are fixedly installed on the inner side of each connecting plate (601). Connecting rods (603) are fixedly installed on the top of each spring rod (602). Connecting plates (604) are installed on the outer side of each connecting rod (603). T-blocks (605) are slidably connected to the top of each connecting rod (603). Connecting rods (606) are fixedly installed on the adjacent sides of each of the two T-blocks (605). An adjusting wheel (607) is fixedly installed on the front side of the connecting plate 2 (604). A fixing plate (608) is fixedly connected to the outer diagonal of the connecting plate 2 (604). A motor 3 (609) is fixedly installed at the bottom of the fixing plate (608). A drive wheel 1 (610) is fixedly connected to the output end of the motor 3 (609). Two belts 1 (611) are sleeved on the outer wall of the drive wheel 1 (610). A driven wheel 1 (612) is sleeved on the inner wall of the two belts 1 (611). A grinding roller 1 (613) is fixedly connected to the inner wall of the driven roller 1 (612). Two grinding rollers 2 (614) are rotatably connected to the adjacent side of the connecting plate 2 (604).

4. The tunnel secondary lining template grinding device according to claim 1, characterized in that: The side polishing assembly (5) includes a motor (501), which is fixedly installed on the top center front side of the mounting bracket (1). The output end of the motor (501) is fixedly connected to a drive rod (502). The outer wall of the drive rod (502) is slidably connected to two moving plates (503). The bottom of the two moving plates (503) is rotatably connected to multiple limiting wheels (504). The outer sides of the multiple limiting wheels (504) are all slidably connected to U-shaped plates (505). The inner walls of the two moving plates (503) are fixedly installed with a motor (506). The output end of the motor (506) is fixedly connected to a polishing wheel (507).

5. The tunnel secondary lining template grinding device according to claim 4, characterized in that: The bottom end face of the U-shaped plate (505) is fixedly connected to the top surface of the mounting bracket (1). The opening of the U-shaped plate (505) is arranged facing inward. The two ends of the drive rod (502) pass through the two side walls of the U-shaped plate (505) respectively. The end rod of the drive rod (502) is rotatably connected to the inner wall of the side wall of the U-shaped plate (505). The two movable plates (503) are symmetrically arranged on the left and right sections of the drive rod (502).

6. The tunnel secondary lining template grinding device according to claim 1, characterized in that: Multiple limiting rollers (8) are evenly spaced along the top right edge of the mounting frame (1). The bottom shaft of the limiting roller (8) is inserted into the top mounting hole of the mounting frame (1). The shaft of the limiting roller (8) is rotatably connected to the inner wall of the mounting frame (1). The axes of the multiple limiting rollers (8) are arranged vertically, and the outer wheel surfaces are in the same vertical plane.

7. A tunnel secondary lining template grinding device according to claim 22, characterized in that: Multiple conveying rollers (3) are evenly spaced along the length of the connecting frame (2). The two ends of the conveying roller (3) penetrate the two side walls of the connecting frame (2). The end rod of the conveying roller (3) is rotatably connected to the inner side wall of the connecting frame (2). The two sides of the connecting frame (2) are symmetrically fixed to the outer walls of the left and right sides of the mounting frame (1). The axis of the conveying roller (3) is arranged horizontally.

8. A tunnel secondary lining template grinding device according to claim 3, characterized in that: The two ends of the grinding roller one (613) pass through the driven wheels one (612) on both sides respectively. The end of the grinding roller one (613) is coaxially and fixedly connected to the inner wall of the driven wheel one (612). The two grinding rollers two (614) are arranged in parallel on the upper and lower sides of the grinding roller one (613) respectively. The two ends of the grinding roller two (614) are rotatably connected to the inner wall of the corresponding side connecting plate two (604).

9. A tunnel secondary lining template grinding device according to claim 1, characterized in that: The rear end rod of the first limiting roller (709) is coaxially and fixedly connected to the inner wall of the third driving wheel (706), and the rear end rod of the second limiting roller (710) is coaxially and fixedly connected to the inner wall of the third driven wheel (708). The axes of the first limiting roller (709) and the second limiting roller (710) are on the same horizontal plane, and their wheel surfaces are arranged at intervals relative to each other.

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