Concrete forming equipment and forming method for prefabricated box girder

Abstract

The invention provides concrete forming equipment and a forming method for a prefabricated box girder, and belongs to the technical field of concrete prefabricated box girders. The device comprises a guide table, a box girder body and a box girder prefabricated template used for forming the box girder body, and further comprises a partition lubricating assembly and a detection driving assembly. Through cooperation of the speed reducer, the lead screw and the hydraulic cylinder, the positions of the scraping plate and the grinding disc can be adjusted, the surface of the box girder is scraped and polished, and flatness and smoothness are ensured; the movable disc is matched with the spring, can adjust and buffer impact according to the surface fluctuation of the box girder, protects the box girder and prolongs the service life of the millstone and the movable disc; the partition lubricating assembly realizes precise lubrication by using a special nozzle and a nano channel; the low-viscosity nano lubricant guarantees timely lubrication, the detection driving assembly intelligently controls the lubrication degree according to feedback of a friction force sensor, the utilization rate is improved, the grinding disc condition can be inferred by analyzing sensor data, grinding disc parameters are adjusted in time when friction force is abnormal, and damage to a box girder and excessive abrasion of the grinding disc are prevented.

Description

Technical Field

[0001] The present invention relates to the technical field of prefabricated concrete box girders, and in particular to concrete forming equipment and a forming method for prefabricated box girders. Background Art

[0002] Precast concrete box girders are prefabricated components that are usually used in bridges, tunnels and other engineering projects. Precast box girders usually have a rectangular or box-shaped section. This shape provides a large cross-sectional area, which helps to bear the load of the bridge or other structure. The box girder contains cavities and holes inside to reduce its own weight and provide a better strength-to-weight ratio. It also helps to guide cables, pipes, etc. through the box girder.

[0003] At present, the prefabrication of box girders usually includes casting the bottom plate, web plate, top plate in the mold, curing and curing of the box girder, demolding and trimming the edges, and polishing. After the top plate of the box girder is cast, the top plate needs to be finished. However, the characteristics of the box girder material and the differences in the casting and curing processes may lead to uneven surface hardness. The existing devices have many limitations when dealing with box girders with uneven surface hardness. It is difficult for them to sense this hardness difference. When the grinding wheel is polishing on the surface of the box girder, it encounters an area with higher hardness. The grinding wheel needs to overcome greater resistance, which significantly increases the friction between the grinding wheel and the surface of the box girder. In the area with lower hardness, the grinding wheel is relatively easier to pass through and the friction is smaller. This irregular change in friction will aggravate the wear of the grinding wheel, which will not only affect its own service life, but also damage the surface of the box girder.

[0004] How to invent a concrete forming equipment to improve these problems has become an urgent problem to be solved by technicians in this field. Summary of the invention

[0005] In order to make up for the above shortcomings, the present invention provides a concrete forming device and a forming method for prefabricated box beams, aiming to improve the problems mentioned in the above background.

[0006] The present invention is achieved in that:

[0007] The present invention provides a concrete forming equipment, comprising a guide platform, a box beam body and a box beam precast template for forming the box beam body, a mounting frame is installed on the outer side of the guide platform, a bottom plate of the box beam precast template is slidably connected to the guide platform, a guide rail and a mounting seat are installed on the top of the mounting frame, a reducer is fixedly connected to one side of one of the mounting seats, a first lead screw is fixedly connected to the output end of the reducer, the first lead screw is rotatably connected to two mounting seats, a slide is slidably arranged on the guide rail, a mounting plate is fixedly installed on the upper end of the slide, a guide rail is fixedly connected to one side of the mounting plate, the guide rail is threadedly connected to the first lead screw, a hydraulic cylinder is fixedly connected to the upper side wall of the mounting plate, a piston rod is slidably connected to the inside of the hydraulic cylinder, and the end of the piston rod passes through the side wall of the mounting plate and extends to the lower side of the mounting plate. The top end of the piston rod is fixedly mounted with a scraper, and the side wall of the scraper is fixedly connected to a support plate, and a support seat is fixedly mounted on the support plate, and one side of the support seat is fixedly connected to a motor, and an output end of the motor is fixedly connected to a second screw, and the second screw is rotatably connected to the two support seats, and a positioning nut is threadedly connected to the second screw, and the bottom wall of the positioning nut abuts against the top wall of the support plate. A positioning sleeve is clamped inside the positioning nut through a connecting bolt, and a sliding mounting plate is slidably abutted against the upper end of the mounting plate. The upper end of the connecting shaft passes through the side wall of the sliding mounting plate, and a driving mechanism is installed above the sliding mounting plate, and the output end of the driving mechanism is connected to the upper end of the connecting shaft, and a connecting shaft is rotatably connected in the positioning sleeve, and a polishing assembly is fixedly connected to the lower end of the connecting shaft, and also includes:

[0008] Partition lubrication assembly: The partition lubrication assembly is arranged inside the polishing assembly. When the top surface of the box beam body is polished, the partition lubrication assembly can lubricate the polishing area;

[0009] Detection drive component: The detection drive component is arranged on the polishing component. The detection drive component can control the degree of lubrication according to the friction force of the polishing area, and can also perform integrated analysis on the state of the polishing component.

[0010] Preferably, the upper side wall of the scraper is fixedly connected with a guide rod, the side wall of the mounting plate is penetrated by a through hole matching the guide rod, and the lower side wall of the mounting plate is fixedly connected with a connecting plate for supporting the supporting plate.

[0011] Preferably, the polishing assembly includes a grinding disc and a movable disc, the grinding disc is fixedly connected to the lower end of the connecting shaft, the lower end of the grinding disc is provided with a movable cavity matching the movable disc, the upper side wall of the movable disc is fixedly connected with a limiting guide column, the upper side wall of the limiting guide column is fixedly connected with a spring, the interior of the grinding disc is provided with a liquid storage cavity, the lower side wall of the liquid storage cavity is provided with a groove matching the limiting guide column, and the upper end of the spring is fixedly connected to the top wall of the liquid storage cavity.

[0012] Preferably, the limiting guide column is hexagonal in shape, and is sealed and slidably connected to the liquid storage chamber. The lower end of the grinding disc is flush with the lower end of the scraper. In the initial state, the upper end of the movable disc is located in the movable chamber and the lower end is below the grinding disc.

[0013] Preferably, the partitioned lubrication assembly includes a liquid guiding cavity, a liquid guiding platform, an inner ring nozzle, an outer ring nozzle, a liquid injection tube and a one-way air inlet. The liquid guiding platform is fixedly connected to the upper side wall of the movable disk and is communicated with the liquid guiding cavity. The side wall of the liquid guiding platform is provided with a liquid guiding port. The liquid injection tube and the one-way air inlet are respectively fixedly arranged on the upper side of the grinding disc and are both communicated with the liquid storage cavity. A plug is installed at the end of the liquid injection tube, and lubricant can be added to the liquid storage cavity through the liquid injection tube. A through port matching the liquid guiding platform is provided inside the grinding disc, and a liquid level sensor is provided at the bottom of the liquid storage cavity.

[0014] Preferably, the bottom of the inner circle nozzle and the outer circle nozzle are flush with the bottom of the movable disk, the inner circle nozzle and the outer circle nozzle are circumferentially distributed at the bottom of the movable disk and are both connected to the liquid guide cavity, wherein the inner circle nozzle is located at the inner circle of the movable disk, and the outer circle nozzle is located at the outer circle of the movable disk, the liquid guide platform is arranged adjacent to the inner circle nozzle, and the outer circle nozzle is arranged adjacent to the edge of the movable disk, a liquid inlet cavity 1 is arranged inside the inner circle nozzle, a plurality of side channels 1 are opened on the circumference of the liquid inlet cavity 1, and a channel 1 is opened on the lower side, a liquid inlet cavity 2 is arranged inside the outer circle nozzle, a plurality of side channels 2 are opened on the circumference of the liquid inlet cavity 2, and a channel 2 is opened on the lower side, the inner diameter of the liquid inlet cavity 2 is equal to that of the liquid inlet cavity 1 and the depth of the liquid inlet cavity 2 is greater than the depth of the liquid inlet cavity 1, the opening length of the side channel 2 is greater than the opening length of the side channel 1, and the caliber of the channel 2 is greater than the caliber of the channel 1.

[0015] Preferably, the lubricant is a low-viscosity nano-lubricant, the internal channels of the inner ring nozzle and the outer ring nozzle are both nano-lubricating channels, the liquid guide platform in the initial state blocks the liquid storage cavity, and the liquid guide port is inside the liquid storage cavity when the bottom of the movable disk is flush with the bottom of the grinding disk.

[0016] Preferably, the detection drive assembly includes a micro electric cylinder, a plurality of friction force sensors and a heat conduction groove, the micro electric cylinder is fixedly arranged on the top of the grinding disc, the output end of the micro electric cylinder passes through the side wall of the grinding disc and extends into the liquid storage cavity, the output end of the micro electric cylinder located inside the liquid storage cavity is fixedly connected with a pressure ring, there is a gap between the pressure ring and the side wall of the liquid storage cavity and the spring, and the friction force sensor is installed at the bottom of the movable disc.

[0017] Preferably, the friction sensor and the micro electric cylinder are electrically connected, the friction sensor is distributed between the inner circle nozzle and the outer circle nozzle and at the bottom center of the movable disk, the heat conduction groove is located inside the liquid conduction cavity and is arranged around the installation interval of the friction sensor, a central liquid conduction channel is opened on the lower side of the heat conduction groove located at the bottom center of the movable disk, and the friction sensor is a strain gauge sensor.

[0018] A method for forming a prefabricated box beam using a concrete forming device comprises the following steps:

[0019] S1: The bottom web steel skeleton and top plate steel bars are formed on a special steel bar binding cradle;

[0020] S2: The hydraulic system controls the closed mold with the mobile bottom mold trolley. Before hoisting, the mold release agent is sprayed on the surface of the box beam precast template, the steel cage is hoisted into the box beam precast template, and the end molds are installed at both ends of the box beam precast template and the inner mold is installed in the box beam precast template;

[0021] S3: pour concrete on the top of the box girder precast formwork until the bottom plate, web plate and top plate of the box girder are initially formed;

[0022] S4: Use the polishing assembly to automatically vibrate and level the top plate, and polish along the length and width directions of the box girder body;

[0023] S5: After the initial setting of the box girder body, the surface of the box girder body is watered for maintenance;

[0024] S6: Stranding of steel strands. Before stranding, remove the anchor plate and the mortar at the bell mouth. Pre-tension the box girder on the guide platform to increase the bending strength of the box girder and reduce cracks. After removing the end mold and inner mold, pre-tension the box girder.

[0025] S7: After the initial tensioning is completed, the beam is lifted, the box beam body is moved to the outside of the box beam precast formwork, the inside and outside of the box beam body are maintained, and the final tensioning is performed;

[0026] S8: After the final tensioning is completed for h, cut the anchor outer steel strand according to the marking mark, and carry out pipeline grouting construction within hours after the final tensioning is completed;

[0027] S9: Anchor sealing. Before anchor sealing, a short steel bar with a hook at one end and a thread at the other end is installed in the bolt hole of the anchor plate and tied together with the steel mesh in the anchor hole to ensure that the end sealing concrete is connected to the beam body as a whole, and then the overall anchor sealing template is installed;

[0028] S10: After the secondary finishing of the anchor concrete is completed, cover its surface with plastic film for heat preservation and moisture retention. After the curing is completed, apply waterproof coating on the beam end.

[0029] The beneficial effects of the present invention are:

[0030] Through the coordination of reducer, lead screw, hydraulic cylinder, etc., the position of scraper and grinding disc can be adjusted to achieve scraping and polishing of the box beam surface, ensuring that the box beam surface meets high flatness and smoothness requirements. The movable disc can automatically adjust its position according to the ups and downs of the box beam surface. The spring plays a buffering role, reducing the impact of the grinding disc on the box beam surface, protecting the structural integrity of the box beam surface, and extending the service life of the grinding disc and movable disc. The zoned lubrication component meets the lubrication needs of different positions of the grinding disc. Through specially designed inner and outer ring nozzles and nano-lubrication channels, it can achieve precise lubrication of the contact area between the grinding disc and the box beam surface, improve the lubrication effect, and reduce friction and wear. The low-viscosity nano-lubricant is combined with the nano-lubrication channel to ensure that the lubricant can flow quickly and smoothly to meet the lubrication needs of different areas in a timely manner.

[0031] The detection drive component automatically adjusts the pressure of the micro electric cylinder on the lubricant in the liquid storage chamber according to the information fed back by the friction sensor, thereby realizing intelligent control of the lubrication degree, avoiding excessive or insufficient lubrication, and improving the utilization rate of the lubricant; by analyzing the periodic changes in the friction sensor data, the wear degree of the grinding disc and whether there is an unevenness problem can be inferred, providing a basis for the replacement or maintenance of the grinding disc, and avoiding the impact of excessive wear of the grinding disc on the polishing quality; when the sensor detects abnormal friction caused by uneven hardness or pressure changes on the box beam surface, the control system can adjust the grinding disc working parameters in time to ensure normal contact between the grinding disc and the box beam surface, and prevent damage to the box beam surface and excessive wear of the grinding disc. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0033] Figure 1 It is a schematic diagram of the overall structure of a concrete forming equipment provided by the present invention;

[0034] Figure 2 It is a left-side structural schematic diagram of a concrete forming device provided by the present invention;

[0035] Figure 3 It is a front cross-sectional structural schematic diagram of a concrete forming device provided by the present invention;

[0036] Figure 4 The present invention provides a concrete forming device Figure 3 The enlarged structural diagram at A in the middle;

[0037] Figure 5 It is a structural schematic diagram of a grinding disc of a concrete forming equipment provided by the present invention;

[0038] Figure 6 It is a schematic diagram of the bottom structure of a grinding disc of a concrete forming equipment provided by the present invention;

[0039] Figure 7 It is a structural schematic diagram of a liquid guide platform of a concrete forming equipment provided by the present invention;

[0040] Figure 8 It is a schematic diagram of a compression ring structure of a concrete forming equipment provided by the present invention;

[0041] Fig. 9 It is a schematic diagram of the cross-sectional structure of the inner ring nozzle of a concrete forming equipment provided by the present invention;

[0042] Fig.10 It is a schematic diagram of the cross-sectional structure of a liquid guiding cavity of a concrete forming equipment provided by the present invention;

[0043] Fig.11 The present invention provides a schematic diagram of the structure of an inner ring nozzle and an outer ring nozzle of a concrete forming device.

[0044] In the figure: 1, guide table; 2, box beam prefabricated template; 3, mounting plate; 4, reducer; 5, hydraulic cylinder; 6, grinding disc; 7, liquid storage chamber; 8, support plate; 9, movable plate; 10, box beam body; 11, mounting frame; 31, guide rail; 32, sliding mounting plate; 33, connecting plate; 41, first lead screw; 42, mounting seat; 51, piston rod; 52, scraper; 60, movable chamber; 61, connecting shaft; 62, positioning sleeve; 63, positioning nut; 64, connecting bolt; 71, injection pipe; 72, one-way air inlet; 73, pressure ring; 74 , micro electric cylinder; 81, support seat; 82, motor; 90, liquid guide cavity; 91, limit guide column; 92, liquid guide table; 93, inner ring nozzle; 94, outer ring nozzle; 95, friction sensor; 96, heat conduction groove; 310, slide table; 521, guide rod; 710, plug; 821, second screw; 911, spring; 921, liquid guide port; 931, liquid inlet cavity one; 932, channel one; 933, side channel one; 941, liquid inlet cavity two; 942, channel two; 943, side channel two; 961, center liquid guide channel. DETAILED DESCRIPTION

[0045] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0046] Embodiment 1, refer to Figure 1-Figure 7 A concrete forming device comprises a guide platform 1, a box beam body 10 and a box beam prefabricated template 2 for forming the box beam body 10. A mounting frame 11 is installed on the outer side of the guide platform 1. The bottom plate of the box beam prefabricated template 2 is slidably connected to the guide platform 1, so that the box beam body 10 can move smoothly along the guide platform 1 after forming for subsequent processing. A guide rail 31 and a mounting seat 42 are installed on the top of the mounting frame 11. A reducer 4 is fixedly connected to one side of one of the mounting seats 42. A first lead screw 41 is fixedly connected to the output end of the reducer 4. The first lead screw 41 is rotatably connected to the two mounting seats 42. A slide 310 is slidably provided on the guide rail 31, a mounting plate 3 is fixedly installed on the upper end of the slide 310, a guide rail 31 is fixedly connected to one side of the mounting plate 3, the guide rail 31 is threadedly connected to the first lead screw 41, a hydraulic cylinder 5 is fixedly connected to the upper side wall of the mounting plate 3, a piston rod 51 is slidably connected inside the hydraulic cylinder 5, an end of the piston rod 51 passes through the side wall of the mounting plate 3 and extends to the lower side of the mounting plate 3, a scraper 52 is fixedly installed on the end of the piston rod 51, a support plate 8 is fixedly connected to the side wall of the scraper 52, a support seat 81 is fixedly installed on the support plate 8, one of the support seats 81 A motor 82 is fixedly connected to one side, and a second lead screw 821 is fixedly connected to the output end of the motor 82. The second lead screw 821 is rotatably connected to the two support seats 81. A positioning nut 63 is threadedly connected to the second lead screw 821. The bottom wall of the positioning nut 63 abuts against the top wall of the support plate 8. The interior of the positioning nut 63 is clamped and installed with a positioning sleeve 62 through a connecting bolt 64. A sliding mounting plate 32 is slidably abutted against one side of the mounting plate 3. The upper end of the connecting shaft 61 passes through the side wall of the sliding mounting plate 32. A driving mechanism is installed above the sliding mounting plate 32. The output end of the driving mechanism is connected to the upper end of the connecting shaft 61. The connecting shaft 61 is connected to the positioning sleeve 62, and the lower end of the connecting shaft 61 is fixedly connected to the polishing assembly. The output end of the reducer 4 is connected to the first lead screw 41, which is used to drive the mounting plate 3 to slide on the guide rail 31. The hydraulic cylinder 5 on the mounting plate 3 drives the scraper 52 to move through the piston rod 51 to achieve the scraping operation on the surface of the box beam body 10, so that it meets certain flatness requirements, in preparation for the subsequent polishing treatment. The position of the positioning nut 63 and the polishing assembly can be adjusted by the motor 82 and the second lead screw 821 to achieve the polishing treatment of different positions of the box beam body 10, and also includes:

[0047] Partition lubrication assembly: The partition lubrication assembly is arranged inside the polishing assembly. When the top surface of the box beam body 10 is polished, the partition lubrication assembly can lubricate the polishing area;

[0048] Detection drive assembly: The detection drive assembly is arranged on the polishing assembly. The detection drive assembly can control the degree of lubrication according to the friction force of the polishing area, and can also perform integrated analysis on the state of the polishing assembly.

[0049] Furthermore, the upper side wall of the scraper 52 is fixedly connected with a guide rod 521, the side wall of the mounting plate 3 is penetrated with a through hole matching the guide rod 521, the lower side wall of the mounting plate 3 is fixedly connected with a connecting plate 33 supporting the support plate 8, the arrangement of the guide rod 521 and the connecting plate 33 improves the moving stability of the polishing assembly, the polishing assembly includes a grinding disc 6 and a movable disc 9, the grinding disc 6 is fixedly connected to the lower end of the connecting shaft 61, the lower end of the grinding disc 6 is provided with an active cavity 60 matching the movable disc 9, the upper side wall of the movable disc 9 is fixedly connected with a limiting guide post 91, the limiting guide post 91 The upper side wall is fixedly connected with a spring 911, a liquid storage chamber 7 is provided inside the grinding disc 6, and a groove matching the limiting guide column 91 is provided on the lower side wall of the liquid storage chamber 7. The upper end of the spring 911 is fixedly connected with the top wall of the liquid storage chamber 7, and the movable disc 9 is connected with the grinding disc 6 through the limiting guide column 91 and the spring 911. The movable disc 9 can move up and down in the movable chamber 60 of the grinding disc 6. This arrangement enables the movable disc 9 to automatically adjust its position according to the unevenness of the box beam surface and the pressure exerted on the grinding disc 6, thereby ensuring that the grinding disc 6 always maintains good contact with the box beam surface and improving the polishing effect.

[0050] It should be noted that the limit guide post 91 is set in a hexagonal shape, and there is a sealed sliding connection between the limit guide post 91 and the liquid storage chamber 7. On the one hand, it plays a role in limiting the rotation of the movable disk 9, ensuring that the movable disk 9 can only move in the vertical direction and ensure that it can rotate synchronously with the grinding disk 6; on the other hand, the sealed sliding connection can prevent the lubricant in the liquid storage chamber 7 from leaking. The lower end of the grinding disk 6 is flush with the lower end of the scraper 52. In the initial state, the upper end of the movable disk 9 is located in the active cavity 60 and the lower end is below the grinding disk 6. When the grinding disk 6 contacts the surface of the box beam, the spring 911 can play a buffering role to prevent the grinding disk 6 from causing excessive impact on the surface of the box beam.

[0051] In this embodiment, first, the first screw 41 is driven by the reducer 4 to adjust the position of the mounting plate 3 so that the scraper 52 moves to a suitable starting position. Then, the hydraulic cylinder 5 is started, the piston rod 51 is extended, and the scraper 52 moves downward to contact the surface of the box beam body 10. As the mounting plate 3 moves along the guide rail 31, the scraper 52 moves on the surface of the box beam to scrape the concrete flat.

[0052] After the scraping operation is completed, the second lead screw 821 is driven by the motor 82 to adjust the positions of the positioning nut 63 and the connecting shaft 61, so that the grinding disc 6 moves to the position where polishing is required, and the driving mechanism at the upper end of the connecting shaft 61 drives the connecting shaft 61 to rotate, thereby driving the grinding disc 6 to rotate. The grinding disc 6 polishes the surface of the box beam body 10 during rotation. During polishing, the piston rod 51 moves downward appropriately to increase the contact force between the movable disc 9 and the surface of the box beam. This allows the movable disc 9 to apply greater pressure to the surface of the box beam during rotation, thereby improving the polishing effect, more effectively removing the unevenness of the box beam surface, and making the surface smoother. The grinding disc 6 begins to polish the surface of the box beam under the state of increased contact force, first starting from the edge position. When the edge is polished, the motor 82 drives the second lead screw 821 again to move the grinding disc 6 to the other side along the axial direction of the second lead screw 821. The surface of the box beam in this section is continuously polished until the polishing work of the entire section is completed. After the polishing of one section is completed, the piston rod 51 is controlled to move upward so that the grinding disc 6 and other related structures return to a relatively high position to avoid damage to the polished surface when moving the mounting plate 3. Then, the first screw 41 is driven by the reducer 4 to adjust the position of the mounting plate 3 and move the grinding disc 6 to the next section that needs to be polished. After the mounting plate 3 moves to the appropriate position, the above-mentioned polishing process is repeated again, that is, the position of the grinding disc 6 is first fine-tuned by the motor 82, the driving mechanism drives the grinding disc 6 to rotate, the piston rod 51 is appropriately moved downward to increase the contact force for polishing, and after the edge is polished, it moves along the second screw 821 to complete the polishing of the entire section. Then, the piston rod 51 moves upward, and then the mounting plate 3 is moved to prepare for the work of the next section. This cycle is repeated until the polishing process of the surface of the entire box beam body 10 is completed.

[0053] After being scraped, the surface of the box beam may still be uneven to a certain extent. The movable plate 9 is connected to the grinding plate 6 through the limiting guide column 91, and under the action of the spring 911, it can automatically adjust its position according to the ups and downs of the box beam surface. When the grinding plate 6 moves to the convex part of the box beam surface, the movable plate 9 is subjected to upward pressure, compresses the spring 911 and moves upward, so that the grinding plate 6 maintains good contact with the surface of the box beam, avoiding excessive wear or damage to the surface of the box beam due to excessive local pressure; when encountering a concave part, the elastic force of the spring 911 will push the movable plate 9 downward to ensure that the movable plate 9 can still fit the surface of the box beam for polishing, thereby ensuring the continuity and uniformity of the polishing process; this automatic adjustment mechanism enables the movable plate 9 to always maintain a relatively stable contact pressure with the surface of the box beam during the entire polishing process, avoiding the problem of uneven polishing caused by surface unevenness, and both the high points and low points on the surface of the box beam can be polished with appropriate pressure, effectively improving the flatness and smoothness of the surface of the box beam and ensuring the polishing quality.

[0054] In the process of grinding disc 6 rotating to polish the surface of the box beam, a certain impact force will inevitably be generated. The presence of spring 911 plays a buffering role, which can absorb and disperse these impact forces and reduce the direct impact of grinding disc 6 on the surface of the box beam. This not only helps to protect the structural integrity of the surface of the box beam and prevent cracks or damage, but also can extend the service life of grinding disc 6 and movable disc 9 and reduce the maintenance cost of equipment.

[0055] Example 2, refer to Figure 6-Figure 11 The partitioned lubrication assembly includes a liquid guiding cavity 90, a liquid guiding platform 92, an inner ring nozzle 93, an outer ring nozzle 94, a liquid injection tube 71 and a one-way air inlet 72. The liquid guiding platform 92 is fixedly connected to the upper side wall of the movable disk 9 and is connected to the liquid guiding cavity 90. The side wall of the liquid guiding platform 92 is provided with a liquid guiding port 921. The liquid injection tube 71 and the one-way air inlet 72 are respectively fixedly arranged on the upper side of the grinding disc 6 and are both connected to the liquid storage cavity 7. The one-way air inlet 72 connects the liquid storage cavity 7 with the outside atmosphere to ensure the pressure balance in the liquid storage cavity 7. When the lubricant flows out, the air can enter the liquid storage cavity 7 through the one-way air inlet 72 to avoid the formation of negative pressure in the cavity and affect the normal outflow of the lubricant. The end of the liquid injection tube 71 is installed with a plug 710 to prevent the lubricant from flowing out. The lubricant can be added to the liquid storage chamber 7 through the liquid injection tube 71. The grinding disc 6 is provided with a through opening matching the liquid guide platform 92. A liquid level sensor is provided at the bottom of the liquid storage chamber 7 for real-time monitoring of the liquid level of the lubricant in the liquid storage chamber 7. By obtaining the liquid level information, the operator can timely understand the remaining amount of lubricant in the liquid storage chamber 7 so that it can be replenished through the liquid injection tube 71 when necessary to ensure the continuity of the lubrication process. The liquid guide chamber 90 serves as a channel for the flow of lubricant, connecting the liquid guide platform 92 and the inner ring nozzle 93 and the outer ring nozzle 94 to ensure that the lubricant can be smoothly transported from the liquid storage chamber 7 to the contact area between the movable disc 9 and the box beam surface that needs lubrication.

[0056] Furthermore, the bottom of the inner ring nozzle 93 and the outer ring nozzle 94 are flush with the bottom of the movable disk 9, and the inner ring nozzle 93 and the outer ring nozzle 94 are circumferentially distributed at the bottom of the movable disk 9 and are both connected to the liquid guide cavity 90, wherein the inner ring nozzle 93 is located at the inner ring of the movable disk 9, and the outer ring nozzle 94 is located at the outer ring of the movable disk 9. This position setting can lubricate different areas of contact between the movable disk 9 and the box beam surface separately, ensuring that the contact area between the bottom of the entire grinding disk 6 and the box beam surface can be fully lubricated, the liquid guide platform 92 is adjacent to the inner ring nozzle 93, and the outer ring nozzle 94 is adjacent to the edge of the movable disk 9, and a liquid inlet cavity 931 is arranged inside the inner ring nozzle 93, and a plurality of side channels 933 and a lower side channel 933 are opened on the circumferential side of the liquid inlet cavity 931. A channel 1 932 is provided, and a liquid inlet chamber 2 941 is provided inside the outer ring nozzle 94. A plurality of side channels 2 943 are provided on the circumference of the liquid inlet chamber 2 941, and a channel 2 942 is provided on the lower side. The inner diameter of the liquid inlet chamber 2 941 is equal to that of the liquid inlet chamber 1 931, and the depth of the liquid inlet chamber 2 941 is greater than the depth of the liquid inlet chamber 1 931. The opening length of the side channel 2 943 is greater than the opening length of the side channel 1 933, and the caliber of the channel 2 942 is greater than the caliber of the channel 1 932. These design differences are to meet the lubrication requirements of different positions of the movable disk 9. The outer ring may be subjected to greater friction and wear than the inner ring during the polishing process, and more lubricant is required. Therefore, a larger channel size and a deeper liquid inlet chamber are used to ensure sufficient lubricant supply.

[0057] It should be noted that the lubricant is a low-viscosity nano-lubricant. The low viscosity property enables the nano-lubricant to flow quickly and smoothly in the liquid storage chamber 7, the liquid guide chamber 90 and the nano-lubricating channel. When the grinding disc 6 is working, it can quickly respond to the lubrication needs of different areas on the surface of the grinding disc 6 and the box beam, and reach the parts that need lubrication in time to ensure the timeliness and effectiveness of lubrication. Compared with high-viscosity lubricants, low-viscosity nano-lubricants can be filled into the tiny gap between the grinding disc 6 and the surface of the box beam more quickly to form a uniform lubricating film, effectively reducing friction. The internal channels of the inner ring nozzle 93 and the outer ring nozzle 94 are both nano-lubricating channels. The size of the nano-lubricating channels is small and precise, which can provide a good lubrication effect on the low-viscosity nano-lubricant. The flow rate of the lubricant is finely controlled. According to the different lubrication requirements of the inner and outer rings of the grinding disc 6, by designing nano-lubricating channels with different structures (such as the difference in the internal channels of the inner ring nozzle 93 and the outer ring nozzle 94), the precise adjustment of the lubricant outflow at different positions can be achieved. The tiny size and special design of the nano-lubricating channel help the lubricant to flow out of the nozzle in a more uniform manner. During the rotation of the grinding disc 6, the evenly flowing lubricant can form a uniform lubricating film on the surface of the grinding disc 6 and the box beam, avoiding local insufficient lubrication or excessive lubrication. This uniform lubricating film can effectively reduce the fluctuation of friction, improve the polishing quality, and make the flatness and smoothness of the box beam surface more consistent.

[0058] In the initial state, the liquid guiding platform 92 blocks the liquid storage chamber 7. When the bottom of the movable disk 9 is flush with the bottom of the grinding disk 6, the liquid guiding port 921 is located inside the liquid storage chamber 7. The liquid guiding platform 92 is fixedly connected to the upper side wall of the movable disk 9 and communicates with the liquid guiding chamber 90, playing the role of guiding and distributing the lubricant. The liquid guiding port 921 on the side wall is the key channel for the lubricant in the liquid storage chamber 7 to enter the liquid guiding chamber 90. In the initial state, the liquid storage chamber 7 is blocked to prevent lubricant leakage. It is opened only under specific conditions (such as changes in the position of the movable disk 9) to control the outflow timing of the lubricant.

[0059] In this embodiment, in the initial state, there is a certain positional relationship between the bottom of the movable disk 9 and the bottom of the grinding disk 6. At this time, the liquid guide platform 92 blocks the liquid storage cavity 7, and the liquid guide port 921 is inside the liquid storage cavity 7. The lubricant cannot flow out, thereby ensuring the storage of the lubricant and preventing leakage.

[0060] When the grinding wheel 6 starts to polish the surface of the box beam, as the grinding wheel 6 contacts the surface of the box beam and applies pressure, the movable plate 9 moves upward under the action of pressure (because the movable plate 9 is connected to the grinding wheel 6 through the limiting guide column 91 and the spring 911). The upward movement of the movable plate 9 causes the liquid guide port 921 to leave the blocked position of the liquid storage chamber 7, and the liquid storage chamber 7 is connected to the liquid guide platform 92. Since the upward movement of the limiting guide column 91 will cause the pressure in the cavity to increase, the lubricant in the liquid storage chamber 7 flows into the liquid guide cavity 90 through the liquid guide port 921 under the action of gravity and the pressure in the cavity.

[0061] The lubricant entering the liquid guide cavity 90 flows to the inner ring nozzle 93 and the outer ring nozzle 94 respectively. Due to the different internal structural designs of the inner ring nozzle 93 and the outer ring nozzle 94, the lubricant flows out from the nozzle at different flow rates and in different ways according to the lubrication requirements of different positions of the grinding disc 6 (movable disc 9). The liquid inlet cavity 1 931 and the corresponding channel structure of the inner ring nozzle 93 allow an appropriate amount of lubricant to flow out through the side channel 1 933 and the channel 1 932 to lubricate the contact area between the inner ring of the movable disc 9 and the surface of the box beam; the liquid inlet cavity 2 941 and its channel structure of the outer ring nozzle 94 ensure that more lubricant flows out through the side channel 2 943 and the channel 2 942 to meet the greater lubrication requirements of the contact area between the outer ring of the movable disc 9 and the surface of the box beam.

[0062] During the outflow of the lubricant, the one-way air inlet 72 allows outside air to enter the liquid storage chamber 7, maintaining the pressure balance in the liquid storage chamber 7 and ensuring that the lubricant can continue to flow out smoothly. At the same time, the liquid level sensor monitors the liquid level in the liquid storage chamber 7 in real time. When the liquid level drops to a certain level, it indicates that the lubricant in the liquid storage chamber 7 is insufficient. The operator can open the plug 710 of the injection tube 71 to add lubricant to the liquid storage chamber 7 to ensure the continuation of the lubrication process.

[0063] Example 3, refer to Figure 8-Figure 10The detection drive component includes a micro electric cylinder 74, a plurality of friction sensors 95 and a heat conduction groove 96. The micro electric cylinder 74 is fixedly arranged on the top of the grinding disc 6. The output end of the micro electric cylinder 74 passes through the side wall of the grinding disc 6 and extends to the inside of the liquid storage chamber 7. The output end of the micro electric cylinder 74 located in the liquid storage chamber 7 is fixedly connected with a pressure ring 73. By receiving the command of the control system, the micro electric cylinder 74 can accurately control the expansion and contraction of its output end, thereby adjusting the pressure of the lubricant in the liquid storage chamber 7 through the pressure ring 73. There is a gap between the pressure ring 73 and the side wall of the liquid storage chamber 7 and the spring 911, which ensures that the lubricant can be smoothly injected while ensuring that the air pressure in the cavity is consistent. The friction sensor 95 is installed at the bottom of the movable disk 9.

[0064] Furthermore, the friction sensor 95 and the micro electric cylinder 74 are electrically connected, and wireless transmission technology, such as Bluetooth, wireless radio frequency, etc., can be used to feed back the measured friction data to the control system in real time. The control system compares the actual measured friction data with the preset friction threshold to determine whether the current lubrication level meets the demand. If the friction exceeds or falls below the threshold range, the control system will issue an instruction to control the action of the micro electric cylinder 74, adjust the pressure of the pressure ring 73 on the lubricant in the liquid storage chamber 7, and then adjust the lubrication level to achieve closed-loop control of the lubrication process. The friction sensor 95 is distributed between the inner ring nozzle 93 and the outer ring nozzle 94 and at the bottom center of the movable disk 9. The heat conduction groove 96 is located inside the liquid conduction cavity 90 and is arranged around the installation interval of the friction sensor 95. During the operation of the movable disk 9, the friction between the movable disk 9 and the surface of the box beam will generate heat. The heat conduction groove 96 and the flowing lubricant can conduct this heat away to avoid local temperature. The temperature is too high, which helps to protect the friction sensor 95 and make it work in a suitable temperature environment to ensure the accuracy and stability of the sensor measurement data. A central liquid guide channel 961 is provided on the lower side of the heat conduction groove 96 located at the center of the bottom of the movable disk 9. During the flow of the lubricant, the central liquid guide channel 961 can guide part of the lubricant to flow to the central area of ​​the bottom of the movable disk 9 to ensure that this area can also be fully lubricated, thereby further improving the lubrication uniformity of the entire contact area between the grinding disk 6 and the box beam surface. The friction sensor 95 is a strain gauge sensor. As a strain gauge sensor, the friction sensor 95 can accurately measure the friction between the grinding disk 6 and the box beam surface in real time. The selection of these positions can comprehensively obtain the friction information when different parts of the movable disk 9 are in contact with the box beam surface, and provide accurate data support for the control system. The surface of the friction sensor 95 should be added with a wear-resistant coating, such as a ceramic coating, a cemented carbide coating, etc., to improve the wear resistance of the sensor.

[0065] In this embodiment, when the grinding disc 6 starts to work, the nano-lubricant mainly relies on the capillary action of the nano-lubricating channel to play a role. The nano-lubricating channel is a carefully designed tiny channel inside the grinding disc 6, and its size is at the nanometer level. The nano-lubricant has special physical properties, and there is adhesion and surface tension between it and the channel wall. When the grinding disc 6 is close to the surface of the box beam but has not yet started a large amount of relative movement, the nano-lubricant will form a thin liquid film on the channel wall under the action of adhesion. At the same time, due to the existence of surface tension, this liquid film tends to shrink, thereby forming a spontaneous driving force in the nano-lubricating channel, so that the nano-lubricant slowly penetrates into the surface of the grinding disc 6 along the channel. When the lubricant flows in the liquid guiding cavity 90, part of the lubricant will flow to the central area of ​​the bottom of the grinding disc 6 through the central liquid guiding channel 961, realizing comprehensive and uniform lubrication.

[0066] In this process, the nano-lubricant gradually spreads on the surface of the grinding disc 6 through capillary action to form an initial nano-lubricating film. Although this lubricating film is relatively thin, it can provide a certain degree of lubrication between the grinding disc 6 and the box beam surface in the initial stage of the rotation of the grinding disc 6, reduce the initial friction between the two, and protect the grinding disc 6 and the box beam surface from excessive wear.

[0067] When the grinding wheel 6 is polishing the surface of the box beam, the friction sensor 95 at the bottom of the movable plate 9 senses the friction between the grinding wheel 6 and the surface of the box beam in real time. Since the friction sensor 95 is a strain gauge sensor, when the movable plate 9 is subjected to the friction force, the part where the sensor is located will produce strain, and the resistance value of the strain gauge will change. The change in resistance value is converted into an electrical signal through the measuring circuit. This electrical signal represents the current friction force. The friction sensor 95 is distributed between the inner circle nozzle 93 and the outer circle nozzle 94 and at the bottom center of the movable plate 9, and can comprehensively obtain the friction force information of different positions of the grinding wheel 6.

[0068] The friction sensor 95 transmits the measured electrical signal to the control system. A suitable friction threshold range is preset in the control system. When the actually measured friction exceeds this range, the control system will make corresponding decisions according to the exceeding situation. If the friction is too large, it means that the current nano-lubricating film may not be able to provide sufficient lubrication effect. The friction between the grinding disc 6 and the box beam surface is too large, which may cause problems such as increased wear and reduced work efficiency. The control system will issue a command to the micro-electric cylinder 74 to extend the output end of the micro-electric cylinder 74, push the pressure ring 73 downward, and increase the lubrication of the liquid storage chamber 7. The pressure of the lubricant. When the pressure increases, the speed at which the lubricant flows out of the liquid storage chamber 7 is accelerated and the flow rate is increased, which further increases the thickness of the nano-lubricating film, thereby improving the lubrication degree and reducing the friction. On the contrary, if the friction detected by the friction sensor 95 is lower than the set threshold lower limit, it means that the lubricating effect of the nano-lubricating film is too strong, or the current nano-lubricant is supplied too much, which may cause a waste of nano-lubricant and may also affect the working performance of the grinding disc 6. The control system will instruct the micro-electric cylinder 74 to contract, and the pressure of the pressure ring 73 on the lubricant will be reduced, thereby reducing the outflow of the lubricant and avoiding excessive lubrication.

[0069] Through the capillary action of this nano-lubricating channel and the coordinated work of the micro-electric cylinder 74, as well as the dynamic adjustment of the control system based on the feedback of the friction sensor 95, the formation process of the nano-lubricating film can be accurately controlled, so that it can achieve the best lubrication effect in different working stages and different areas of the surface of the grinding disc 6 (movable disc 9), effectively improving the working efficiency and service life of the grinding disc 6, while ensuring the processing quality of the box beam surface.

[0070] On the other hand, during the rotation of the grinding disc 6, each sensor will pass through different positions on the box beam surface in turn. If the grinding disc 6 is flat, the friction data measured by each sensor should show a periodic and relatively stable change pattern during one rotation. If the grinding disc 6 is uneven, the periodic change of the sensor data will be abnormal. For example, when the grinding disc 6 rotates to a certain angle, the friction data of a certain sensor suddenly fluctuates greatly, and this fluctuation is not caused by the local characteristics of the box beam surface. In this case, it is possible that the grinding disc 6 is uneven at the corresponding position. By analyzing the changing trend of these friction data, the degree of wear of the grinding disc 6 can be inferred, which provides a basis for the replacement or maintenance of the grinding disc 6 and avoids affecting the polishing quality due to excessive wear of the grinding disc 6.

[0071] The characteristics of the box girder material and the differences in the casting and curing processes may lead to uneven surface hardness. When the grinding wheel 6 contacts the area with higher hardness on the box girder surface, greater force is required to overcome the surface resistance, and the friction will increase; in the area with lower hardness, the grinding wheel 6 is relatively easier to pass through, and the friction is smaller. If the pressure on the grinding wheel 6 in a certain area suddenly increases, the friction will increase accordingly. After the sensor detects this change, it will feed back to the control system. The system can adjust the working parameters of the grinding wheel 6 in time, such as reducing the pressure applied to the grinding wheel 6, to ensure normal contact between the grinding wheel 6 and the box girder surface, and avoid damage to the box girder surface or excessive wear of the grinding wheel 6 due to excessive pressure.

[0072] It should be noted that the specific models and specifications of the motors, sensors, electric cylinders, and hydraulic cylinders need to be selected and determined based on the actual specifications of the device, and the specific selection calculation method adopts the existing technology in this field, so it will not be described in detail.

[0073] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A concrete forming device, comprising a guide platform (1), a box beam body (10) and a box beam precast template (2) for forming the box beam body (10), wherein a mounting frame (11) is installed on the outer side of the guide platform (1), a bottom plate of the box beam precast template (2) is slidably connected to the guide platform (1), a guide rail (31) and a mounting seat (42) are installed on the top of the mounting frame (11), a reducer (4) is fixedly connected to one side of one of the mounting seats (42), a first lead screw (41) is fixedly connected to the output end of the reducer (4), and the first lead screw ( The guide rail (31) is rotatably connected to the two mounting seats (42); a slide table (310) is slidably arranged on the guide rail (31); a mounting plate (3) is fixedly mounted on the upper end of the slide table (310); a guide rail (31) is fixedly connected to one side of the mounting plate (3); the guide rail (31) is threadedly connected to the first lead screw (41); a hydraulic cylinder (5) is fixedly connected to the upper side wall of the mounting plate (3); a piston rod (51) is slidably connected to the inside of the hydraulic cylinder (5); an end of the piston rod (51) passes through the side wall of the mounting plate (3) and extends to the lower end of the mounting plate (3). On the side, a scraper (52) is fixedly installed at the end of the piston rod (51), and a support plate (8) is fixedly connected to the side wall of the scraper (52), and a support seat (81) is fixedly installed on the support plate (8), and a motor (82) is fixedly connected to one side of one of the support seats (81), and a second lead screw (821) is fixedly connected to the output end of the motor (82), and the second lead screw (821) is rotatably connected to the two support seats (81), and a positioning nut (63) is threadedly connected to the second lead screw (821), and the bottom wall of the positioning nut (63) is connected to the The top wall of the support plate (8) abuts against each other, a positioning sleeve (62) is clamped and installed inside the positioning nut (63) through a connecting bolt (64), one side of the mounting plate (3) is slidably abutted against a connecting plate (32), the upper end of the connecting shaft (61) passes through the side wall of the sliding mounting plate (32), a driving mechanism is installed above the sliding mounting plate (32), the output end of the driving mechanism is connected to the upper end of the connecting shaft (61), the connecting shaft (61) is rotatably connected in the positioning sleeve (62), and the lower end of the connecting shaft (61) is fixedly connected to a polishing component, characterized in that Also includes: Partitioned lubrication assembly: the partitioned lubrication assembly is arranged inside the polishing assembly, and when the top surface of the box beam body (10) is polished, the partitioned lubrication assembly can lubricate the polishing area; Detection drive component: The detection drive component is arranged on the polishing component. The detection drive component can control the degree of lubrication according to the friction force of the polishing area, and can also perform integrated analysis on the state of the polishing component.

2. A concrete forming equipment according to claim 1, characterized in that: The upper side wall of the scraper (52) is fixedly connected to a guide rod (521), the side wall of the mounting plate (3) is penetrated by a through hole matching the guide rod (521), and the lower side wall of the mounting plate (3) is fixedly connected to a connecting plate (33) supporting the supporting plate (8).

3. A concrete forming equipment according to claim 1, characterized in that: The polishing assembly comprises a grinding disc (6) and a movable disc (9); the grinding disc (6) is fixedly connected to the lower end of the connecting shaft (61); the lower end of the grinding disc (6) is provided with a movable cavity (60) matching the movable disc (9); the upper side wall of the movable disc (9) is fixedly connected to a limiting guide column (91); the upper side wall of the limiting guide column (91) is fixedly connected to a spring (911); a liquid storage cavity (7) is provided inside the grinding disc (6); the lower side wall of the liquid storage cavity (7) is provided with a notch matching the limiting guide column (91); the upper end of the spring (911) is fixedly connected to the top wall of the liquid storage cavity (7).

4. A concrete forming equipment according to claim 3, characterized in that: The limiting guide column (91) is hexagonally shaped and is sealed and slidably connected to the liquid storage chamber (7). The lower end of the grinding disc (6) is flush with the lower end of the scraper (52). In the initial state, the upper end of the movable disc (9) is located in the movable chamber (60) and the lower end is located below the grinding disc (6).

5. The concrete forming equipment according to claim 3, characterized in that: The partitioned lubrication assembly comprises a liquid guiding cavity (90), a liquid guiding platform (92), an inner ring nozzle (93), an outer ring nozzle (94), a liquid injection pipe (71) and a one-way air inlet (72); the liquid guiding platform (92) is fixedly connected to the upper side wall of the movable disk (9) and communicates with the liquid guiding cavity (90); a liquid guiding port (921) is provided on the side wall of the liquid guiding platform (92); the liquid injection pipe (71) and the one-way air inlet (72) are respectively fixedly arranged on the upper side of the grinding disc (6) and are both communicated with the liquid storage cavity (7); a plug (710) is installed at the end of the liquid injection pipe (71); lubricant can be supplemented into the liquid storage cavity (7) through the liquid injection pipe (71); a through port matching the liquid guiding platform (92) is provided inside the grinding disc (6); and a liquid level sensor is provided at the bottom of the liquid storage cavity (7).

6. A concrete forming equipment according to claim 5, characterized in that: The bottoms of the inner ring nozzle (93) and the outer ring nozzle (94) are flush with the bottom of the movable disk (9); the inner ring nozzle (93) and the outer ring nozzle (94) are circumferentially distributed at the bottom of the movable disk (9) and are both connected to the liquid guide cavity (90); the inner ring nozzle (93) is located at the inner ring of the movable disk (9), and the outer ring nozzle (94) is located at the outer ring of the movable disk (9); the liquid guide platform (92) is arranged adjacent to the inner ring nozzle (93); the outer ring nozzle (94) is arranged adjacent to the edge of the movable disk (9); a liquid inlet cavity (931) is arranged inside the inner ring nozzle (93); and the circumferential side of the liquid inlet cavity (931) is opened. A plurality of side channels (933) are provided, and a channel (932) is opened on the lower side; a liquid inlet cavity (941) is provided inside the outer ring nozzle (94); a plurality of side channels (943) are opened on the circumference of the liquid inlet cavity (941), and a channel (942) is opened on the lower side; the liquid inlet cavity (941) has an inner diameter equal to that of the liquid inlet cavity (931), and the depth of the liquid inlet cavity (941) is greater than the depth of the liquid inlet cavity (931); the opening length of the side channel (943) is greater than the opening length of the side channel (933); and the caliber of the channel (942) is greater than the caliber of the channel (932).

7. The concrete forming equipment according to claim 5, characterized in that: The lubricant is a low-viscosity nano-lubricant, the internal channels of the inner ring nozzle (93) and the outer ring nozzle (94) are both nano-lubricating channels, the liquid guide platform (92) in the initial state blocks the liquid storage cavity (7), and the liquid guide port (921) is located inside the liquid storage cavity (7) when the bottom of the movable disc (9) is flush with the bottom of the grinding disc (6).

8. The concrete forming equipment according to claim 5, characterized in that: The detection drive assembly comprises a micro electric cylinder (74), a plurality of friction force sensors (95) and a heat conduction groove (96); the micro electric cylinder (74) is fixedly arranged on the top of the grinding disc (6); the output end of the micro electric cylinder (74) penetrates the side wall of the grinding disc (6) and extends into the liquid storage cavity (7); the output end of the micro electric cylinder (74) located in the liquid storage cavity (7) is fixedly connected to a pressure ring (73); a gap exists between the pressure ring (73) and the side wall of the liquid storage cavity (7) and the spring (911); and the friction force sensor (95) is installed at the bottom of the movable disc (9).

9. The concrete forming equipment according to claim 8, characterized in that: The friction sensor (95) and the micro electric cylinder (74) are electrically connected. The friction sensor (95) is distributed between the inner ring nozzle (93) and the outer ring nozzle (94) and at the bottom center of the movable disk (9). The heat conduction groove (96) is located inside the liquid conduction cavity (90) and is arranged around the installation area of ​​the friction sensor (95). A central liquid conduction channel (961) is opened on the lower side of the heat conduction groove (96) located at the bottom center of the movable disk (9). The friction sensor (95) is a strain gauge sensor.

10. A method for forming a prefabricated box beam using the concrete forming equipment according to any one of claims 1 to 9, characterized in that: The steps include: S1: The bottom web steel frame and top plate steel bars are formed on a special steel bar binding frame; S2: The hydraulic system controls the closed mold with the mobile bottom mold trolley. Before hoisting, a mold release agent is sprayed on the surface of the box beam precast template (2), the steel cage is hoisted into the box beam precast template (2), and end molds are installed at both ends of the box beam precast template (2) and an inner mold is installed in the box beam precast template (2); S3: pouring concrete onto the top of the box girder precast formwork (2) until the bottom plate, web plate and top plate of the box girder are initially formed; S4: using a polishing assembly to automatically vibrate and flatten the top plate, and to perform polishing along the length direction and width direction of the box beam body (10); S5: After the box girder body (10) is initially set, the surface of the box girder body (10) is watered for curing; S6: Stranding the steel strands. Before the stranding, the anchor plate and the mortar at the bell mouth are removed. The box girder body (10) is pre-tensioned on the guide platform (1) to increase the bending strength of the box girder body (10) and reduce cracks. After the end mold and the inner mold are removed, the box girder body (10) is pre-tensioned. S7: After the initial tensioning is completed, the beam is lifted, and the box beam body (10) is moved to the outside of the box beam prefabricated template (2), and the inside and outside of the box beam body (10) are maintained, and the final tensioning is performed; S8: 24 hours after the final tensioning, cut the anchor outer steel strand according to the marking mark, and carry out pipeline grouting construction within 48 hours after the final tensioning is completed; S9: Anchor sealing. Before anchor sealing, a short steel bar with a hook at one end and a thread at the other end is installed in the bolt hole of the anchor plate and tied together with the steel mesh in the anchor hole to ensure that the end sealing concrete is connected to the beam body as a whole, and then the overall anchor sealing template is installed; S10: After the secondary finishing of the anchor concrete is completed, cover its surface with plastic film for heat preservation and moisture retention. After the curing is completed, apply waterproof coating on the beam end.

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