Concrete segmental beam end face gluing device and construction method

Abstract

The invention provides a concrete segmental beam end face gluing device. A sliding rail matched with the width of a beam is arranged above the end face of a segmental beam, a sliding block is in sliding connection with the sliding rail, the upper end of a pressing rod is rotationally connected with the sliding block, a lifting mechanism is arranged on the pressing rod and drives a gluing box to move up and down in the length direction of the pressing rod, and a rotating mechanism is further arranged on the gluing box; the control device is used for controlling the gluing box to rotate along the central axis of the gluing box, a plurality of gluing pipes are arranged on the inner side of the gluing box, the outer side of the gluing box is communicated with the gluing device through a pipeline, the outlet ends of the gluing pipes abut against the end face of the segmental beam, and the gluing device comprises a sealing tank, a stirring mechanism, a pressurizing mechanism, an exhaust port and a valve. The construction method comprises the steps of end face dynamic analysis and partition modeling, manual and automatic cooperative gluing time sequence control, length-width ratio driven path parameter self-adaptive adjustment and manual operation feedback calibration. The problems that the manual gluing quality is difficult to guarantee, more structural adhesive is wasted, and the construction safety is poor are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of segmental beam erection, and particularly to a glue coating device and construction method for the end face of a concrete segmental beam. Background Art

[0002] With the rapid development of construction engineering technology, the construction and installation technology of segmental beams is moving towards industrialization, automation, and intelligence. At present, the production, transportation, and installation of segmental beams have been basically automated, significantly improving the construction efficiency and quality control level. However, in the key process of glue coating on the end face of segmental beams, manual operation is still mainly relied on, resulting in problems such as uneven glue layer thickness, serious material waste, low construction efficiency, and high safety risks in high-altitude operations, which severely restricts the automation level of the overall construction process. In contrast, automatic glue coating technology has been widely used in fields such as automobile manufacturing and building decoration, such as automatic plastering machines and airless spraying machines, providing an important reference for the innovation of glue coating technology on the end face of segmental beams.

[0003] In view of the above technical bottlenecks, it is of great significance to develop an automated construction process and supporting equipment suitable for glue coating on the end face of concrete segmental beams. This technology can draw on the mature experience of other industries, combine the special requirements of segmental beam construction, and achieve precision and intelligence in the glue coating process through innovative design. Through technological innovation, not only can the glue coating quality and construction efficiency be improved, but also material consumption and safety risks can be reduced, thereby promoting the transformation and upgrading of segmental beam construction technology towards a higher level of automation and intelligence. Summary of the Invention

[0004] The main object of the present invention is to provide a glue coating device and construction method for the end face of a concrete segmental beam, so as to solve the problems of difficult quality assurance of manual glue coating, more waste of structural glue, and poor construction safety.

[0005] To solve the above technical problems, the technical solution adopted by the present invention is: A glue coating device for the end face of a concrete segmental beam, a slide rail adapted to the beam width is provided above the end face of the segmental beam, a slider is slidably connected to the slide rail, the upper end of a pressure rod is rotatably connected to the slider, a lifting mechanism is provided on the pressure rod, and the lifting mechanism drives the glue coating box to move up and down along the length direction of the pressure rod. A rotating mechanism is also provided on the glue coating box for controlling the rotation of the glue coating box along its central axis. A plurality of glue coating tubes are provided inside the glue coating box, and the outside is connected to a glue feeding device through a pipeline. The outlet end of the glue coating tube abuts against the end face of the segmental beam; The glue feeding device includes a sealed tank, a stirring mechanism, a pressurizing mechanism, an exhaust port, and a valve.

[0006] In a preferred embodiment, first guide grooves are provided on both the left and right sides of the pressure rod. Both ends of the guide block extend out of the first guide grooves and are slidably connected to the pressure rod. Second guide grooves are provided on both the inner and outer sides of the pressure rod. One end of the guide pipe passes through the second guide groove on the inner side and is connected to the glue application box, and the other end passes through the middle of the guide block and the second guide groove on the outer side and is connected to the pipeline. The guide block drives the glue application box to move up and down along the length direction of the pressure rod. The lengths of the first guide groove and the second guide groove are adapted to the height of the segment beam. The width of the first guide groove is equal to the width of the guide block, and the width of the second guide groove is equal to the outer diameter of the guide pipe.

[0007] In a preferred embodiment, the structure of the lifting mechanism is as follows: the driven wheel and the driving wheel are respectively rotatably connected to the upper and lower ends of the pressure rod. One end of the belt is connected to one end of the guide block, and the other end sequentially bypasses the driven wheel, passes through the belt hole at the other end of the guide block, bypasses the driving wheel, and then is connected to one end of the guide block to form a closed loop. The rotating shaft of the driving wheel passes through the pressure rod and is connected to the rotary handle. The rotary handle drives the guide block to lift and lower with the rotation of the belt.

[0008] In a preferred embodiment, the structure of the rotating mechanism is as follows: a cross-shaped groove is provided on the outer side of the guide block, and a cross-shaped convex portion is provided in the middle of the guide pipe. The cross-shaped convex portion is embedded in the cross-shaped groove to limit the rotational freedom of the guide pipe relative to the guide block. A rotating cavity communicating with the cross-shaped groove is also provided in the middle of the guide block. The diameter of the rotating cavity is larger than the maximum circumscribed circle diameter of the cross-shaped convex portion. The guide pipe is sleeved in an elastic member. One end of the elastic member is connected to the inner wall of the rotating cavity, and the other end is connected to the cross-shaped convex portion to limit the cross-shaped convex portion from disengaging from the cross-shaped groove.

[0009] In a preferred embodiment, a spherical structure is provided in the middle of the wall of the glue application pipe. Its wall thickness is smaller than the wall thickness of the rest of the glue application pipe. The wall of the spherical structure is made of an elastic material, and this elastic material allows the spherical structure to undergo elastic deformation when axially stressed and drives the spherical structure to automatically return to its initial shape after the external force is removed.

[0010] In a preferred embodiment, a scraping plate is further provided on the glue application box. A toothed structure is provided at the front end of the scraping plate, and long circular holes are provided on both sides at the rear end. Bolts pass through the long circular holes to connect and lock the scraping plate to the glue application box. The length direction of the long circular hole is consistent with the adjustment direction of the scraping plate, so that the scraping plate can slide along the length direction of the long circular hole to adjust the distance between the end of the toothed structure of the scraping plate and the end of the glue application pipe.

[0011] In a preferred embodiment, the structure of the glue application device is as follows: the output end of the reduction motor is coaxially and drivingly connected to the stirring shaft. The stirring shaft passes through the top sealing cover of the sealing tank and extends into the sealing tank, and extends to the lower region of the inner cavity of the sealing tank. Stirring blades are further provided at the lower end of the stirring shaft. An outlet is provided at the bottom of the sealing tank. The outlet is connected to the guide pipe through a pipeline to form a glue application channel. A valve is further provided on the pipeline to control the opening and closing of the glue application channel. The connections between both ends of the pipeline and the glue outlet and the guiding pipe are both detachable connections.

[0012] In a preferred solution, a pressurizing mechanism is provided on one side of the top of the sealing tank. The high-pressure gas storage tank is connected to the air inlet of the air pump, the air outlet of the air pump is connected to the pressurizing pipeline, and the pressurizing pipeline passes through the top sealing cover of the sealing tank and extends into the inner cavity of the sealing tank; On the other side of the top of the sealing tank, an exhaust port is further provided for adjusting the internal pressure of the sealing tank.

[0013] In a preferred solution, the glue application device further includes a manual glue gun for applying glue to multiple assembly grooves on the end face of the segment beam. The structure of the manual glue gun is as follows: the rear end of the glue injection box is connected to the front end of the electric push rod housing through a connecting frame. The glue injection box is in a rectangular box structure, and the height of its glue application end face is the same as the height dimension of the assembly groove. The execution end of the electric push rod passes through the rear end of the glue injection box and extends into the inner cavity. A push plate adapted to the inner cavity contour of the glue injection box is provided at the front end of the execution end. A sealing sleeve is provided between the execution end and the rear end wall of the glue injection box. A hand-held handle is provided in the middle of the electric push rod housing; The glue application end face is provided with a glue application port having the same length as the length of the glue application end face, and a plurality of thickness-limiting columns are symmetrically provided at both ends thereof. The height of the thickness-limiting columns is adapted to the glue application thickness; The volume of the glue injection box is the same as the total glue application amount of multiple assembly grooves.

[0014] In a preferred solution, a construction method of a glue application device for the end face of a concrete segment beam includes: S1. End face dynamic analysis and zoning modeling: Measure the actual maximum length L and maximum width W of the end face of the segment beam, calculate the aspect ratio R = L / W, and dynamically divide the glue application area according to the value range of R: When R≥2, the end face is divided into a horizontally-prioritized main area, a vertically-secondary area, and an assembly groove sub-area; When 1<R<2, the end face is equally divided into a horizontal and vertical cross-grid area, and the assembly groove sub-area is calibrated; When R≤1, the end face is divided into a vertically-prioritized main area, a horizontally-secondary area, and an assembly groove sub-area; Based on the zoning results, a glue application path topology diagram is generated, in which the horizontally-prioritized main area adopts a continuous broken line path, and the vertically-prioritized main area adopts a segmented snake-shaped path; S2. Manual and automatic collaborative glue application timing control: Preferably, a glue injection box driven by a slide rail and a lifting mechanism is used to complete the glue application in the main area. The glue application path in the main area generates a continuous broken line or a segmented snake-shaped path according to the zoning results in S1. After the glue application in the main area is completed, the assembly groove sub-area is supplemented with glue by a manual glue gun. When supplementing the glue, the glue application pressure of the manual glue gun is adjusted in real time according to the glue application thickness in the main area, so that the difference in the glue layer thickness between the assembly groove and the main area does not exceed ±0.5mm; S3. Adaptive adjustment of path parameters driven by aspect ratio: Dynamically set the lateral slip speed V and the vertical step S according to the R value, satisfying: When R ≥ 2, , ; When R ≤ 1, , ; Among them, and are the correction coefficients of the end face surface roughness; S4. Manual operation feedback calibration: During the gluing process of the glue applicator box (6), the thickness of the glue layer is monitored in real time. If the thickness deviation exceeds ±1 mm, the gluing is paused, the distance between the scraping plate and the glue applicator tube is manually adjusted, and then the operation continues. After the gluing is completed, a detachable thickness gauge caliper is used to randomly inspect the thickness of the glue layer. The sampling points are located at the junction of the main area and the assembly groove, and the sampling ratio ≥ 10%.

[0015] The present invention provides a concrete segment beam end face gluing device and a construction method, and its beneficial effects are as follows: High-efficiency automated gluing and precise control. Through the coordinated control of the slide rail, the lifting mechanism and the guide groove, the glue applicator box is driven to move precisely horizontally or vertically. Combining with the spherical structure of the elastic glue applicator tube to adapt to the uneven end face, ensuring that the thickness of the glue layer is uniform, and solving the problem of uneven thickness of manual gluing; Dynamic zoning modeling technology and adaptive path parameter adjustment significantly improve the gluing efficiency of large areas.

[0016] Resource conservation and construction quality optimization. The sealed tank integrates a stirring and pressurizing mechanism to ensure the fluidity of the colloid and reduce precipitation waste; The volume of the manual glue gun is precisely matched to the requirements of the assembly groove, reducing colloid waste; The adjustable design of the scraping plate completes gluing and scraping simultaneously, reducing the trimming process and saving working hours.

[0017] Adaptability to complex working conditions and operation convenience. The glue applicator box realizes multi-angle rotation through the cooperation of the cross protrusion and the elastic part, quickly switching between horizontal and vertical gluing directions; The thickness limiting column and the push rod of the manual glue gun control the thickness of the glue layer in the assembly groove, being flexible in complex areas; The lightweight manual glue gun and the design of driving the belt to lift by the rotary handle are labor-saving in operation and have a wide coverage range, adapting to different sizes of segment beams.

[0018] Improvement of stability and safety: The detachable design of the guide groove and the pipeline prevents deviation. Combining with the pressure balance of the exhaust port of the sealed tank, it avoids colloid spraying or interruption of flow, ensuring construction safety; Real-time thickness monitoring and a certain sampling ratio ensure the qualified rate; The length of the modular slide rail can be customized, with strong expandability, suitable for diverse engineering needs.

[0019] Green construction and cost optimization: Precise gluing reduces material waste, and optimizing the process reduces energy consumption; Improving the utilization rate of the colloid and the design of convenient maintenance extend the service life of the device. Brief Description of the Drawings

[0020] The present invention will be further described below in conjunction with the drawings and embodiments: Figure 1 is a schematic diagram of the overall structure of the present invention; Figure 2 is an axonometric structure diagram of the segment beam and the glue application device of the present invention; Figure 3 is a side view structure diagram of the segment beam and the glue application device of the present invention; Figure 4 is a schematic diagram of the structure of the glue feeding device of the present invention; Figure 5 is a rear view structure diagram of the glue application device of the present invention; Figure 6 is a side view structure diagram of the lifting mechanism of the present invention; Figure 7 is a sectional view structure diagram of the connection between the pressure bar, the glue application box and the guide block of the present invention; Figure 8 is a connection structure diagram of the glue application box and the guide block of the present invention; Figure 9 is a sectional view structure diagram of the glue application box of the present invention; Figure 10 is a sectional view structure diagram of the rotating mechanism of the present invention; Figure 11 is a schematic diagram of the layout of the assembly grooves on the end face of the segment beam of the present invention; Figure 12 is a schematic diagram of the structure of the manual glue gun of the present invention; Figure 13 is a structure diagram of the glue application end face of the glue injection box of the present invention.

[0021] In the figure: segment beam 1; assembly groove 101; slide rail 2; slider 3; pressure bar 4; first guide groove 401; second guide groove 402; lifting mechanism 5; driven wheel 501; driving wheel 502; belt 503; glue application box 6; glue application tube 601; spherical structure 6011; guide tube 602; cross protrusion 6021; pipeline 7; glue feeding device 8; sealing tank 801; stirring mechanism 802; reduction motor 8021; stirring shaft 8022; stirring blade 8023; pressurizing mechanism 803; high-pressure gas storage tank 8031; air pump 8032; pressurizing pipeline 8033; exhaust port 804; valve 805; glue outlet 806; guide block 9; belt hole 901; cross groove 902; rotating cavity 903; elastic member 10; scraping plate 11; tooth-like structure 1101; oblong hole 1102; glue injection box 12; glue application port 1201; thickness limiting column 1202; connecting frame 13; electric push rod 14; push plate 15; sealing sleeve 16; hand-held handle 17. Detailed Embodiments

[0022] Embodiment 1 As shown Figures 1 to 13 In the figure, there is a glue - applying device for the end face of a concrete segment beam. Above the end face of the segment beam 1, there is a slide rail 2 adapted to the beam width. A slider 3 is slidably connected to the slide rail 2. The upper end of a pressure rod 4 is rotatably connected to the slider 3. An elevating mechanism 5 is provided on the pressure rod 4, and the elevating mechanism 5 drives a glue - applying box 6 to move up and down along the length direction of the pressure rod 4. A rotating mechanism is also provided on the glue - applying box 6 to control the rotation of the glue - applying box 6 along its central axis. A plurality of glue - applying tubes 601 are provided inside the glue - applying box 6, and the outside is connected to a glue - feeding device 8 through a pipeline 7. The outlet ends of the glue - applying tubes 601 abut against the end face of the segment beam 1; The glue - feeding device 8 includes a sealed tank 801, a stirring mechanism 802, a pressurizing mechanism 803, an exhaust port 804 and a valve 805.

[0023] This application completes the main glue - applying process through an automated mechanism and introduces manual intervention and auxiliary operations in key links, effectively balancing the efficiency of automated construction and the flexibility of manual work, realizing the organic combination of automation and manual work. While retaining the high efficiency and stability of automated operations, the limitations of pure automated equipment under complex working conditions are compensated by flexible manual regulation.

[0024] The glue - applying box 6 is adjusted to the corresponding height of the pressure rod 4 through the elevating mechanism 5. The worker holds the lower end of the pressure rod 4 and presses it down, making the end of the glue - applying tube 601 abut against the end face of the segment beam 1. When performing horizontal glue - applying, keep pressing down the pressure rod 4 and apply a horizontal force. Through the sliding cooperation between the slider 3 and the slide rail 2, the horizontal movement of the end of the glue - applying tube 601 is realized; when performing vertical glue - applying, slide the pressure rod 4 to the vertical glue - applying area, and drive the vertical movement of the end of the glue - applying tube 601 through the elevating mechanism 5 to realize vertical glue - applying. The glue is extruded under pressure from the glue - feeding device 8, flows through the pipeline 7, the glue - applying box 6, reaches the glue - applying tube 601 and is applied to the end face of the segment beam 1.

[0025] In a preferred embodiment, first guide grooves 401 are provided on both the left and right sides of the pressure rod 4. Both ends of a guide block 9 extend out of the first guide grooves 401 and are slidably connected to the pressure rod 4. Second guide grooves 402 are provided on both the inner and outer sides of the pressure rod 4. One end of a guide tube 602 passes through the second guide groove 402 on the inner side and is connected to the glue - applying box 6, and the other end passes through the middle of the guide block 9 and the second guide groove 402 on the outer side and is connected to the pipeline 7. The guide block 9 drives the glue - applying box 6 to move up and down along the length direction of the pressure rod 4; The lengths of the first guide grooves 401 and the second guide grooves 402 are adapted to the height of the segment beam 1. The width of the first guide grooves 401 is equal to the width of the guide block 9, and the width of the second guide grooves 402 is equal to the outer diameter of the guide tube 602.

[0026] By the dimensional fit and sliding connection between the two ends of the guiding block 9 and the first guiding groove 401, the degree of freedom of its forward and backward movement along the pressing rod 4 is restricted. By the dimensional fit and sliding connection between the guiding tube 602 and the second guiding groove 402, the degree of freedom of the guiding block 9 to move along the left and right sides of the pressing rod 4 is restricted, so that the guiding block 9 can only move vertically along the length direction of the pressing rod 4. The relative position between the glue application box 6 and the guiding block 9 is restricted by the guiding tube 602 to prevent the offset and jitter of the glue application box 6, and accurate glue application is realized.

[0027] In the preferred solution, the structure of the lifting mechanism 5 is as follows: the driven wheel 501 and the driving wheel 502 are respectively rotatably connected to the upper and lower ends of the pressing rod 4. One end of the belt 503 is connected to one end of the guiding block 9, and the other end sequentially bypasses the driven wheel 501, passes through the belt hole 901 at the other end of the guiding block 9, bypasses the driving wheel 502 and then is connected to one end of the guiding block 9 to form a closed loop. The rotating shaft of the driving wheel 502 passes through the pressing rod 4 and is connected to the rotary handle 504. The rotary handle 504 drives the guiding block 9 to lift with the rotation of the belt 503.

[0028] The belt 503 bypasses the driven wheels 501 at both ends and the driving wheel 502 to form an oval closed loop. One end of the guiding block 9 is connected to a point on the belt 503. Then the guiding block 9 can be regarded as a fixed point on the belt 503 and moves with the rotation of the belt 503. The relative rotation of the guiding block 9 around the connecting end with the belt 503 is restricted by the belt hole 901 at the other end of the guiding block 9, and the vertical movement of the guiding block 9 is realized. In the preferred solution, the structure of the rotating mechanism is as follows: a cross-shaped groove 902 is provided on the outer side of the guiding block 9, and a cross-shaped protrusion 6021 is provided in the middle of the guiding tube 602. The cross-shaped protrusion 6021 is embedded in the cross-shaped groove 902 to restrict the rotational degree of freedom of the guiding tube 602 relative to the guiding block 9. A rotating cavity 903 communicating with the cross-shaped groove 902 is also provided in the middle of the guiding block 9. The diameter of the rotating cavity 903 is larger than the maximum circumscribed circle diameter of the cross-shaped protrusion 6021. The guiding tube 602 is sleeved in the elastic member 10. One end of the elastic member 10 is connected to the inner wall of the rotating cavity 903, and the other end is connected to the cross-shaped protrusion 6021 to restrict the cross-shaped protrusion 6021 from disengaging from the cross-shaped groove 902.

[0029] In this solution, the elastic member 10 is selected as a pre-compressed spring with a relatively large elastic modulus, so that the cross-shaped protrusion 6021 is restricted within the cross-shaped groove 902 area, and does not disengage from the guiding block 9 due to the reaction force when the end of the glue application tube 601 abuts against the end face of the segment beam 1, nor will the cross-shaped protrusion 6021 be pulled back into the rotating cavity 903.

[0030] When the vertical gluing and horizontal gluing processes are switched, the guide tube 602 is manually held and extended from the outer part of the pressure rod 4 and the guide tube 602 is pushed inward so that the cross-shaped protrusion 6021 on it enters the rotating cavity 903 area. The guide tube 602 is vertically rotated in the desired direction and then released. The elastic part 10 pushes the cross-shaped protrusion 6021 to embed into the cross groove 902 at a vertical angle, thereby realizing the conversion of the gluing angle of the glue tube 601.

[0031] In the preferred embodiment, a spherical structure 6011 is provided in the middle of the wall of the rubber-coated tube 601, and its wall thickness is smaller than the wall thickness of the rest of the rubber-coated tube 601. The wall of the spherical structure 6011 is made of elastic material, which allows the spherical structure 6011 to undergo elastic deformation when subjected to axial force, and drives the spherical structure 6011 to automatically return to its original shape after the external force is removed.

[0032] Through the physical properties of specific elastic materials, the glue coating tube 601 can adapt to the uneven end surface of the segment beam 1, and its self-recovery performance ensures the consistency of subsequent glue coating height, thereby improving the construction quality.

[0033] In the preferred embodiment, the glue coating box 6 is further provided with a scraper 11, the front end of the scraper 11 is provided with a tooth structure 1101, and both sides of the rear end are provided with oblong holes 1102, and bolts pass through the oblong holes 1102 to connect and lock the scraper 11 with the glue coating box 6; The length direction of the oblong hole 1102 is consistent with the adjustment direction of the scraper 11, so that the scraper 11 can slide along the length direction of the oblong hole 1102 to adjust the distance between the end of the tooth structure 1101 of the scraper 11 and the end of the glue coating tube 601.

[0034] When applying glue, rotate the guide tube 602 so that the scraper 11 is located on the rear side of the moving direction of the glue tube 601. The glue flows out from multiple glue tubes 601 and is applied to the end face of the segment beam 1. The scraper 11 then flattens the glue through its tooth structure 1101. Adjust the relative distance between the scraper 11 and the glue box 6. The distance from the end of the tooth structure 1101 to the end of the glue tube 601 is the thickness of the glue layer, thereby achieving consistency in gluing.

[0035] In the preferred embodiment, the structure of the gluing device 8 is as follows: the output end of the reduction motor 8021 is coaxially connected to the stirring shaft 8022, the stirring shaft 8022 passes through the top sealing cover of the sealed tank 801, extends into the sealed tank 801, and extends to the lower area of the inner cavity of the sealed tank 801. The lower end of the stirring shaft 8022 is further provided with a stirring blade 8023; The bottom of the sealed tank 801 is provided with a glue outlet 806, which is connected to the guide tube 602 through a pipe 7 to form a glue channel. The pipe 7 is also provided with a valve 805 for controlling the opening and closing of the glue channel. The connections between both ends of the pipeline 7 and the glue outlet 806 and the guiding pipe 602 are both detachable connections.

[0036] In the preferred solution, a pressurizing mechanism 803 is provided on one side of the top of the sealed tank 801. The high-pressure gas storage tank 8031 is connected to the air inlet of the air pump 8032. The air outlet of the air pump 8032 is connected to the pressurizing pipeline 8033. The pressurizing pipeline 8033 passes through the top sealing cover of the sealed tank 801 and extends into the inner cavity of the sealed tank 801. On the other side of the top of the sealed tank 801, an exhaust port 804 is further provided for adjusting the internal pressure of the sealed tank 801.

[0037] By integrating the stirring mechanism 802 and the pressurizing mechanism 803 on the sealed tank, the colloid is continuously stirred to prevent it from precipitating and ensure its fluidity, so that the colloid can flow out smoothly through the pressurizing mechanism 803.

[0038] The viscosity of the colloid selected in this construction plan can reach 1.2 MPa. The pressurizing range of common small air pumps is from 0.6 MPa to several hundred megapascals. Therefore, the air pump 8032 can be used to achieve the pressurized extrusion of the colloid.

[0039] In the preferred solution, the glue application device further includes a manual glue gun for applying glue to multiple assembly grooves 101 on the end face of the segmental beam 1. The structure of the manual glue gun is as follows: the rear end of the glue injection box 12 is connected to the front end of the housing of the electric push rod 14 through a connecting frame 13. The glue injection box 12 is in the shape of a rectangular box body, and the height of its glue application end face is the same as the height dimension of the assembly groove 101. The execution end of the electric push rod 14 passes through the rear end of the glue injection box 12 and extends into the inner cavity. A push plate 15 adapted to the inner cavity contour of the glue injection box 12 is provided at the front end of the execution end. A sealing sleeve 16 is provided between the execution end and the rear end wall of the glue injection box 12. A hand-held handle 17 is provided in the middle of the housing of the electric push rod 14. The glue application end face is provided with a glue application port 1201 having the same length as the glue application end face, and a plurality of thickness-limiting columns 1202 are symmetrically provided at both ends thereof. The height of the thickness-limiting columns 1202 is adapted to the glue application thickness. The volume of the glue injection box 12 is the same as the total glue application amount of the multiple assembly grooves 101.

[0040] In the area of the assembly groove 101 on the end face contour of the concrete segmental beam 1, since there is a height difference between its surface height and the horizontal and vertical surfaces of the rest of the large area, the adaptive height of the glue application pipe 601 cannot fill it. Therefore, the glue application process of the assembly groove 101 is realized by the method of manually squeezing glue with a manual glue gun.

[0041] During glue application, the worker holds the hand-held handle 17, makes the glue application end face of the glue injection box 12 extend into the assembly groove 101, the thickness-limiting columns 1202 abut against the inner surface of the assembly groove 101, starts the electric push rod 14, and its execution end drives the push plate 15 to move, so that the colloid flows through the glue application port 1201 to the inner surface of the assembly groove 101.

[0042] Example 2 As further described in conjunction with Example 1, as Figures 1 to 13 shown in the structure, a construction method of a glue coating device for the end face of a concrete segmental beam, the method comprising: S1. Dynamic analysis of the end face and zoning modeling: Measure the actual maximum length L and maximum width W of the end face of the segmental beam 1, calculate the aspect ratio R = L / W, and dynamically divide the glue coating area according to the numerical range of R: When R≥2, divide the end face into a horizontally-prioritized main area, a vertically-secondary area, and an assembly groove sub-area; When 1<R<2, divide the end face into a horizontally and vertically-crossed grid area equally, and calibrate the assembly groove sub-area; When R≤1, divide the end face into a vertically-prioritized main area, a horizontally-secondary area, and an assembly groove sub-area; Generate a glue coating path topology diagram based on the zoning result, wherein the horizontally main area adopts a continuous broken line path, and the vertically main area adopts a segmented snake-shaped path; S2. Manual and automatic collaborative glue coating timing control: Preferably use the glue coating box 6 driven by the slide rail 2 and the lifting mechanism 5 to complete the glue coating of the main area. The glue coating path of the main area generates a continuous broken line or a segmented snake-shaped path according to the zoning result of S1. After the glue coating of the main area is completed, supplement the glue coating of the assembly groove sub-area with a manual glue gun. When supplementing the glue coating, adjust the glue application pressure of the manual glue gun in real time according to the glue coating thickness of the main area, so that the difference in the glue layer thickness between the assembly groove 101 and the main area does not exceed ±0.5 mm; S3. Aspect ratio-driven adaptive adjustment of path parameters: Dynamically set the horizontal sliding speed V and the vertical step S according to the R value, satisfying: When R≥2, , ; When R≤1, , ; Wherein, , are the surface roughness correction coefficients of the end face, calculated by measuring the maximum uneven height h of the end face, , ; S4. Manual operation feedback calibration: During the glue coating process of the glue coating box 6, monitor the glue layer thickness in real time. If the thickness deviation exceeds ±1 mm, pause the glue coating, manually adjust the distance between the scraping plate and the glue coating tube, and then continue the operation. After the glue coating is completed, use a detachable thickness gauge to randomly inspect the glue layer thickness. The sampling points are located at the junction of the main area and the assembly groove, and the sampling ratio ≥10%.

[0043] Example 3 As further described in conjunction with Example 1 and Example 2, asFigure 11 The layout structure of the assembly groove 101 on the end face of the segment beam 1 shown. The main structure of the segment beam 1 includes a top plate, a bottom plate, a middle web and two side webs. The assembly groove 101 is arranged on the surface of each structure according to certain force analysis results.

[0044] Before construction, calculate the total expected glue application amount on the end face according to the design parameters of the end face of the segment beam 1 and the designed glue application thickness. After construction, obtain the actual total glue application amount of the construction from the front and rear glue amounts stored in the glue application device (8). Summarize the empirical data and summarize the relationship between the total expected glue application amount and the actual total glue application amount. Before the next construction, pre-store an appropriate amount of glue in the glue application device (8) according to this empirical ratio to avoid waste caused by excessive pre-mixed glue amount.

[0045] Among them, the pre-stored glue amount of the manual glue gun has a greater correlation with the construction quality. According to the layout dimensions and quantities of the assembly grooves 101 on the top plate, bottom plate, middle web and two side webs, combined with the requirement of the construction plan that the glue application thickness is 3 mm, the total glue application amount of the assembly groove 101 can be calculated by the combined key groove dimensions and quantities. The total glue application amount of the assembly groove 101 is about 0.003 - 0.0035 m³. The density of the glue is usually between 1.1 and 1.4 g / cm³. The mass of the glue under this volume does not exceed 4 kg. The mass of the small electric push rod 14 is about 4 kg. Precisely control the total volume of the glue injection box 12 within the required glue application amount to avoid affecting the construction efficiency due to repeated glue suction and injection. At the same time, control the mass that the worker needs to hold within 10 kg to facilitate manual glue application.

[0046] The above embodiments are only the preferred technical solutions of the present invention and should not be regarded as limitations on the present invention. The protection scope of the present invention should be the technical solutions recorded in the claims, including the equivalent replacement solutions of the technical features in the technical solutions recorded in the claims. That is, the equivalent replacement improvements within this scope are also within the protection scope of the present invention.

Claims

1. A glue - coating device for the end face of a concrete segment beam, characterized in that: Above the end face of the segment beam (1), there is a slide rail (2) adapted to the beam width. The slider (3) is slidably connected to the slide rail (2). The upper end of the pressure rod (4) is rotatably connected to the slider (3). An elevating mechanism (5) is provided on the pressure rod (4). The elevating mechanism (5) drives the glue application box (6) to move up and down along the length direction of the pressure rod (4). A rotating mechanism is also provided on the glue application box (6) for controlling the rotation of the glue application box (6) along its central axis. A plurality of glue application tubes (601) are provided inside the glue application box (6), and the outside is communicated with the glue supply device (8) through a pipeline (7). The outlet end of the glue application tube (601) abuts against the end face of the segment beam (1). The glue supply device (8) includes a sealed tank (801), a stirring mechanism (802), a pressurizing mechanism (803), an exhaust port (804) and a valve (805).

2. The glue coating device for the end face of a concrete segment beam according to claim 1, wherein: On the left and right sides of the pressure rod (4), there are first guide grooves (401). Both ends of the guide block (9) extend out of the first guide grooves (401) and are slidably connected to the pressure rod (4). On the inner and outer sides of the pressure rod (4), there are second guide grooves (402). One end of the guide tube (602) passes through the second guide groove (402) on the inner side and is connected to the glue application box (6), and the other end passes through the middle of the guide block (9) and the second guide groove (402) on the outer side and is connected to the pipeline (7). The guide block (9) drives the glue application box (6) to move up and down along the length direction of the pressure rod (4). The lengths of the first guide groove (401) and the second guide groove (402) are adapted to the height of the segment beam (1). The width of the first guide groove (401) is equal to the width of the guide block (9). The width of the second guide groove (402) is equal to the outer diameter of the guide tube (602).

3. The glue - applying device for the end face of a concrete segment beam according to claim 1, characterized in that: The structure of the elevating mechanism (5) is as follows: The driven wheel (501) and the driving wheel (502) are respectively rotatably connected to the upper and lower ends of the pressure rod (4). One end of the belt (503) is connected to one end of the guide block (9), and the other end successively bypasses the driven wheel (501), passes through the belt hole (901) at the other end of the guide block (9), bypasses the driving wheel (502) and then is connected to one end of the guide block (9) to form a closed loop. The rotating shaft of the driving wheel (502) passes through the pressure rod (4) and is connected to the turning handle (504). The turning handle (504) drives the guide block (9) to move up and down as the belt (503) rotates.

4. The glue - applying device for the end face of a concrete segmental beam according to claim 1, characterized in that: The structure of the rotating mechanism is as follows: A cross-shaped groove (902) is provided on the outer side of the guide block (9). A cross-shaped protrusion (6021) is provided in the middle of the guide tube (602). The cross-shaped protrusion (6021) is embedded in the cross-shaped groove (902) to limit the rotational freedom of the guide tube (602) relative to the guide block (9). A rotating cavity (903) communicating with the cross-shaped groove (902) is also provided in the middle of the guide block (9). The diameter of the rotating cavity (903) is larger than the maximum circumscribed circle diameter of the cross-shaped protrusion (6021). The guide tube (602) is sleeved in the elastic member (10). One end of the elastic member (10) is connected to the inner wall of the rotating cavity (903), and the other end is connected to the cross-shaped protrusion (6021) to limit the cross-shaped protrusion (6021) from disengaging from the cross-shaped groove (902).

5. The glue - applying device for the end face of a concrete segment beam according to claim 1, characterized in that: The middle part of the wall of the glue - applying tube (601) is provided with a spherical structure (6011), whose wall thickness is smaller than that of the rest of the glue - applying tube (601). The wall of the spherical structure (6011) is made of an elastic material, and this elastic material allows the spherical structure (6011) to undergo elastic deformation when subjected to axial force, and drives the spherical structure (6011) to automatically return to its initial shape after the external force is removed.

6. The glue - applying device for the end face of a concrete segmental beam according to claim 1, wherein: The glue - applying box (6) is also provided with a scraping plate (11). The front end of the scraping plate (11) is provided with a toothed structure (1101), and the two sides of the rear end are provided with long circular holes (1102). Bolts pass through the long circular holes (1102) to connect and lock the scraping plate (11) to the glue - applying box (6); The length direction of the long circular holes (1102) is consistent with the adjustment direction of the scraping plate (11), so that the scraping plate (11) can slide along the length direction of the long circular holes (1102) to adjust the distance between the end of the toothed structure (1101) of the scraping plate (11) and the end of the glue - applying tube (601).

7. The glue - applying device for the end face of a concrete segment beam according to claim 1, characterized in that: The structure of the glue - feeding device (8) is as follows: the output end of the reduction motor (8021) is coaxially and drivingly connected to the stirring shaft (8022). The stirring shaft (8022) passes through the top sealing cover of the sealed tank (801) and extends into the sealed tank (801), and extends to the lower region of the inner cavity of the sealed tank (801). The lower end of the stirring shaft (8022) is also provided with stirring blades (8023); The bottom of the sealed tank (801) is provided with a glue outlet (806). The glue outlet (806) is connected to the guiding tube (602) through a pipeline (7) to form a glue - feeding channel. A valve (805) is also provided on the pipeline (7) to control the opening and closing of the glue - feeding channel; The connections between the two ends of the pipeline (7) and the glue outlet (806) and the guiding tube (602) respectively are both detachable connections.

8. The glue - applying device for the end face of a concrete segment beam according to claim 7, characterized in that: One side of the top of the sealed tank (801) is provided with a pressurizing mechanism (803). The high - pressure gas storage tank (8031) is connected to the air inlet of the air pump (8032). The air outlet of the air pump (8032) is connected to the pressurizing pipeline (8033). The pressurizing pipeline (8033) passes through the top sealing cover of the sealed tank (801) and extends into the inner cavity of the sealed tank (801); The other side of the top of the sealed tank (801) is also provided with an exhaust port (804) for adjusting the internal pressure of the sealed tank (801).

9. The glue - applying device for the end face of a concrete segment beam according to claim 1, wherein: The glue - applying device also includes a manual glue gun for applying glue to multiple assembly grooves (101) on the end face of the segment beam (1). The structure of the manual glue gun is as follows: the rear end of the glue - injecting box (12) is connected to the front end of the outer shell of the electric push rod (14) through a connecting frame (13). The glue - injecting box (12) has a rectangular box - body structure, and the height of its glue - applying end face is the same as the height dimension of the assembly groove (101). The execution end of the electric push rod (14) passes through the rear end of the glue - injecting box (12) and extends into the inner cavity. A push plate (15) adapted to the inner - cavity contour of the glue - injecting box (12) is provided at the front end of the execution end. A sealing sleeve (16) is provided between the execution end and the rear - end wall of the glue - injecting box (12). A hand - held handle (17) is provided in the middle of the outer shell of the electric push rod (14); The sizing end face is provided with a sizing port (1201) having the same length as the sizing end face, and a plurality of thickness-limiting columns (1202) are symmetrically arranged at both ends thereof. The height of the thickness-limiting column (1202) is adapted to the sizing thickness; The volume of the glue injection box (12) is consistent with the total glue application amount of the plurality of assembly grooves (101).

10. The construction method of a glue - applying device for the end face of a concrete segment beam according to any one of claims 1 to 9, characterized in that: The method includes: S1. End face dynamic analysis and partition modeling: Measure the actual maximum length L and maximum width W of the end face of the segment beam (1), calculate the aspect ratio R = L / W, and dynamically divide the glue application area according to the value range of R: When R≥2, the end face is divided into a horizontally-prioritized main area, a vertically-secondary area, and an assembly groove sub-area; When 1<R<2, the end face is equally divided into a horizontal and vertical cross-grid area, and the assembly groove sub-area is calibrated; When R≤1, the end face is divided into a vertically-prioritized main area, a horizontally-secondary area, and an assembly groove sub-area; Based on the partition result, a glue application path topology map is generated, wherein the horizontally main area adopts a continuous broken line path, and the vertically main area adopts a segmented snake-shaped path; S2. Manual and automatic collaborative glue application timing control: Preferably, the glue injection box (6) driven by the slide rail (2) and the lifting mechanism (5) is used to complete the glue application in the main area. The glue application path in the main area generates a continuous broken line or a segmented snake-shaped path according to the S1 partition result. After the glue application in the main area is completed, the assembly groove sub-area is supplemented with glue by a manual glue gun. When supplementing the glue, the glue application pressure of the manual glue gun is adjusted in real time according to the glue application thickness in the main area, so that the difference in the glue layer thickness between the assembly groove (101) and the main area glue layer thickness does not exceed ±0.5 mm; S3. Aspect ratio-driven path parameter adaptive adjustment: Dynamically set the horizontal sliding speed V and the vertical step S according to the R value, satisfying: When R ≥ 2, , ; When R ≤ 1, , ; Among them, and are the correction coefficients for the surface roughness of the end face. S4. Manual operation feedback calibration: During the glue application process of the glue injection box (6), the glue layer thickness is monitored in real time. If the thickness deviation exceeds ±1 mm, the glue application is paused, the distance between the scraping plate and the glue application tube is manually adjusted, and then the operation is continued. After the glue application is completed, a detachable thickness gauge is used to randomly check the glue layer thickness. The sampling point is located at the junction of the main area and the assembly groove, and the sampling ratio ≥10%.

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