A pipe segment curing agent spraying device and use method thereof

Abstract

A device for spraying a pipe segment curing agent comprises a turning machine; the turning machine comprises a base, a support frame, a bottom support seat, a turning seat, a movable hinge seat, a turning cylinder, a fixed hinge seat, a lifting seat, and a lifting cylinder. The support frame is erected on the base, and a bottom support seat is arranged at the lower part of the support frame. The middle part of the bottom surface of the turning seat is hingedly installed on the top side of the support frame through a fixed hinge seat. A movable hinge seat is fixedly arranged at the end of the turning seat, and a turning cylinder is arranged between the movable hinge seat and the bottom support seat. A lifting seat is fixedly installed on a side of the top surface of the turning seat away from the movable hinge seat, and a sprayer is slidably installed on a side of the turning seat away from the lifting seat. The sprayer is slidably arranged on the turning machine to spray the curing agent on the upper and lower curved surfaces of the inverted pipe segment, and can realize automatic spraying, adapt to pipe segments of different sizes, ensure uniform spraying of the two curved surfaces of the pipe segment, reduce the occupied space, and improve production efficiency.

Description

Technical Field

[0001] The invention relates to a tunnel segment production device, and in particular to a segment curing agent spraying device and a use method thereof. Background Art

[0002] In the prior art, after the segment is demoulded, it needs to be transferred to the curing agent spraying station to spray the curing agent evenly on both sides of the segment. The conventional process is to spray with a handheld sprayer manually, and then use a roller brush to apply it evenly. During the spraying process, each curved surface is required to be sprayed at least twice, and the two spraying directions are perpendicular to each other to ensure that the curing agent is sprayed evenly at each position. At the same time, during the manual brushing process, the segment is generally placed vertically, and the two curved surfaces of the segment are perpendicular to the bottom surface, which is convenient for manual operation. However, this vertical spraying easily causes the curing agent to flow down the vertical surface of the segment, resulting in uneven curing agent spraying. At the same time, it is also necessary to set up a specific curing agent spraying station, which not only occupies manufacturing space, but also consumes time and effort in manual spraying.

[0003] Therefore, it is necessary to design a segment curing agent spraying device and a method of using the same, which can realize automatic spraying, adapt to segments of different sizes, ensure uniform spraying on the two curved surfaces of the segment, reduce floor space, and improve production efficiency. Summary of the invention

[0004] The object of the present invention is to provide a segment curing agent spraying device and a method of using the same to solve the technical problems in the prior art.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A segment curing agent spraying device, comprising a turning machine;

[0007] The turning machine includes a base, a support frame, a bottom support seat, a turning seat, a movable hinge seat, a turning cylinder, a fixed hinge seat, a lifting seat, and a lifting cylinder. The support frame is erected on the base, and a bottom support seat is arranged at the lower part of the support frame. The middle part of the bottom surface of the turning seat is hingedly mounted on the top side of the support frame through a fixed hinge seat, a movable hinge seat is fixedly arranged at the end of the turning seat, a turning cylinder is arranged between the movable hinge seat and the bottom support seat, a lifting seat is fixedly installed on the side of the top surface of the turning seat away from the movable hinge seat, the extension direction of the lifting seat is perpendicular to the extension direction of the turning seat, and a lifting cylinder is vertically installed at the central position of one side of the lifting seat facing the movable hinge seat, and it is characterized in that a sprayer is slidably installed on the side of the turning seat away from the lifting seat, and the sprayer is slidably arranged on the turning machine to spray the curing agent on the upper and lower curved surfaces of the inverted pipe segments.

[0008] Preferably, the sprayer includes a track, a track slider, a lifting frame, a moving mechanism, a rotating mechanism, a flipping mechanism, and a spraying arm; the track includes two symmetrical tracks, which are fixedly installed on the side of the flipping seat away from the lifting seat; a track slider is slidably installed on the track, and a lifting frame is installed on the side of the two track sliders away from the track; the track slider drives the lifting frame to rise and fall along the flipping seat.

[0009] Preferably, the lifting frame is a rectangular frame structure, the lifting frame includes a short side and a long side, and the lifting frame is hollow inside, wherein the hollow space is larger than the top projection area of ​​the pipe segment.

[0010] Preferably, a moving mechanism is installed at the lower part of the lifting frame, and the moving mechanism moves along the short side and the long side of the frame body at the lower part of the lifting frame or moves from one side to another; a rotating mechanism is rotatably installed at the bottom of the moving mechanism, and the rotating mechanism rotates relative to the moving mechanism in a self-driven manner, and the rotating axis of the rotating mechanism is perpendicular to the plane where the lifting frame is located; a flipping mechanism is rotatably installed on the side of the rotating mechanism, and the rotating axis of the flipping mechanism is perpendicular to the rotating axis of the rotating mechanism; the flipping mechanism rotates relative to the rotating mechanism in a self-driven manner; a spray arm is fixedly installed on one side of the flipping mechanism, and nozzles are equidistantly arranged on the spray arm, the length of the spray arm is equal to half the length of the long side of the lifting frame, and the length of the spray arm is greater than half the length of the short side; at a top-down angle perpendicular to the plane of the lifting frame, the cross-sectional range of the moving mechanism and the rotating mechanism is within the width range of the short side and the long side of the lifting frame.

[0011] Preferably, the nozzle is a conical atomizing nozzle with adjustable flow rate and spray angle.

[0012] Preferably, a controller is also included, which is connected to the flip cylinder, the lifting cylinder, the moving mechanism, the rotating mechanism, the flip mechanism, and the spray arm control, and the controller can individually control the opening and closing, flow rate, and spray angle of each nozzle P.

[0013] A method for using a segment curing agent spraying device, characterized in that:

[0014] The steps of spraying the curing agent on the upper and lower curved surfaces of the pipe segment by the turning machine and the spraying machine are as follows:

[0015] S1: The turning machine runs until the turning seat is in a vertical position, the lifting frame of the spraying machine moves downward so that the lifting frame is located above the upper curved surface of the pipe segment, the turning mechanism rotates the spraying arm so that the nozzle faces the upper curved surface of the pipe segment, and the spraying arm moves according to the spraying path of the spraying arm to complete the spraying of the upper curved surface of the pipe segment;

[0016] S2: After the lifting cylinder of the tilting machine extends to lift the pipe segment, the lifting cylinder contracts to lift the pipe segment up;

[0017] S3: The lifting frame of the sprayer moves downward so that the segment passes through the lifting frame, so that the lifting frame is located below the lower arc surface of the segment, the flip mechanism rotates the spray arm so that the nozzle faces the lower arc surface of the segment, and the spray arm moves according to the spraying path of the spray arm to complete the spraying of the lower arc surface of the segment;

[0018] S4: The turning machine extends the turning cylinder to rotate the turning seat from a vertical position to a horizontal position to complete the turning of the pipe segment.

[0019] The movement of the spray arm according to the spray path of the spray arm comprises the following steps:

[0020] S11: the spray arm starts from the end of one short side and moves along a short side spraying path and then stops at the other end of the short side;

[0021] S12: The spray arm rotates 90 degrees clockwise under the operation of the rotating mechanism, so that the axis of the spray arm is parallel to the short side;

[0022] S13: the spraying arm starts from the end of the adjacent long side and travels along a long side spraying path and stops at the other end of the long side;

[0023] S14: The spray arm rotates 90 degrees clockwise under the operation of the rotating mechanism, so that the axis of the spray arm is parallel to the long side;

[0024] S15: Repeat S11-S14 to complete a short side spraying path and a long side spraying path in sequence, and then end the spraying.

[0025] The short side spraying path is that the spray arm moves along the short side of the lifting frame through the moving mechanism, and the axis direction of the spray arm is perpendicular to the short side; the long side spraying path is that the spray arm moves along the long side of the lifting frame through the moving mechanism, and the axis direction of the spray arm is perpendicular to the long side.

[0026] The nozzles on the spray arm in the short side spray path adjust the spray angle of each nozzle according to the distance from the lower upper arc surface or the distance from the upper lower arc surface, so that the spray angles of the nozzles along the spray arm direction decrease or increase in sequence; in the short side spray path, the spray flow rate of each nozzle is the same, and the spray flow rate of the nozzle does not change with the path and time;

[0027] In the long-side spraying path, the spray angle of the nozzle on the spray arm first decreases and then increases, or first increases and then decreases, as the spray arm moves, but the spray angle of each nozzle is the same at the same time; in the long-side spraying path, the spray flow rate of the nozzle on the spray arm first decreases and then increases, or first increases and then decreases, as the spray arm moves, but the spray flow rate of each nozzle is the same at the same time.

[0028] The beneficial effects of the present invention are:

[0029] 1. The segment curing agent spraying device and the use method of the present application combine the segment flipping and spraying process, and at the same time, the segment does not need to be erected when spraying the curing agent, and the curing agent spraying is completed in a horizontal state. At the same time, through a spraying path cycle of a spraying arm, the same curved surface of the segment is sprayed twice in mutually perpendicular directions, which reduces the spraying process and improves the spraying efficiency.

[0030] 2. The corresponding nozzle control logic is set under the long-side spraying path and the short-side spraying path. The spray angle of each nozzle on the spray arm under the short-side spraying path is adjusted according to the distance from the nozzle to the lower upper arc surface or the distance from the upper lower arc surface, so that the spray angle of the nozzle along the spray arm direction decreases or increases successively; under the short-side spraying path, the spray flow rate of each nozzle is the same, and the spray flow rate of the nozzle does not change with the path and time; under the long-side spraying path, the spray angle of the nozzle on the spray arm first decreases and then increases or first increases and then decreases as the spray arm moves, but the spray angle of each nozzle is the same at the same time; under the long-side spraying path, the spray flow rate of the nozzle on the spray arm first decreases and then increases or first increases and then decreases as the spray arm moves, but the spray flow rate of each nozzle is the same at the same time, thereby ensuring the uniformity of spraying. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1-2 This is a schematic diagram of the structure of the segment curing agent spraying device of the present application;

[0032] Figure 3 It is the short side spray path of this application;

[0033] Figure 4-5 It is a side view of the short side spray path of this application;

[0034] Figure 6 It is a schematic diagram of the spray flow rate of the nozzle under the short side spray path of the present application;

[0035] Figure 7 It is a schematic diagram of the spray angle of the nozzle under the short side spraying path of the present application;

[0036] Figure 8 This is a schematic diagram of the nozzle flow rate changing with time under the short side spraying path of this application;

[0037] Fig. 9 It is the long side spraying path of this application;

[0038] Fig.10 This is a schematic diagram of the long side spraying path of the present application when viewed from the width direction of the pipe segment;

[0039] Fig.11 This is a schematic diagram of the long side spraying path of the present application when viewed from the length direction of the tube segment;

[0040] Figure 12-13 It is a schematic diagram of the spray angle and spray flow rate of each nozzle P at a certain time t on the long side spray path of the present application;

[0041] Figure 14-15 It is a schematic diagram of the spray flow rate and spray angle of the nozzle changing with time during the long side spraying path of the present application;

[0042] Fig.16 It is a schematic diagram of the spray path of the spray arm of this application;

[0043] Fig.17 This is a schematic diagram of the working process of the segment curing agent spraying device of the present application;

[0044] Turning machine 1, spraying machine 2, pipe segment 3, base 11, support frame 12, bottom support seat 13, turning seat 14, movable hinge seat 15, turning cylinder 16, fixed hinge seat 17, lifting seat 18, lifting cylinder 19, lifting fixture 191, lifting point 31, track 21, track slider 22, lifting frame 23, moving mechanism 24, rotating mechanism 25, turning mechanism 26, spray arm 27, nozzle P, short side 231, long side 232. DETAILED DESCRIPTION

[0045] The specific implementation of the present invention is described in detail below with reference to the accompanying drawings and preferred embodiments.

[0046] In the demoulding process of the pipe segment, a pipe segment flipping machine is generally used. The present application combines the pipe segment flipping process with the curing agent spraying process. A spraying mechanism that can move up and down is set on the flipping machine. The upper curved surface of the pipe segment is sprayed before flipping. After the flipping machine lifts the pipe segment, the lower curved surface of the pipe segment is sprayed. After the spraying is completed, the pipe segment is flipped again. In this way, the pipe segment flipping and spraying processes are combined, and at the same time, the pipe segment does not need to be erected when spraying the curing agent, and the curing agent spraying is completed in a horizontal state.

[0047] like Figure 1-2 The figure shows a schematic diagram of the structure of the curing agent spraying device of the present application. The curing agent spraying device of the present application comprises a turning machine 1, a spraying machine 2 and a pipe segment 3. The spraying machine 2 is slidably arranged on the turning machine 1 to spray the upper and lower curved surfaces of the pipe segment 3 placed upside down. After the turning machine 1 hoists and turns the pipe segment 3 placed upside down, the pipe segment 3 is placed in a vertical position to facilitate the subsequent processes.

[0048] The turning machine 1 includes a base 11, a support frame 12, a bottom support seat 13, a turning seat 14, a movable hinge seat 15, a turning cylinder 16, a fixed hinge seat 17, a hoisting seat 18, and a hoisting cylinder 19. The support frame 12 is erected on the base 11, a bottom support seat 13 is arranged at the lower part of the support frame 12, the middle part of the bottom surface of the turning seat 14 is hingedly mounted on the top side of the support frame 12 through a fixed hinge seat 17, a movable hinge seat 15 is fixedly arranged at the end of the turning seat 14, and a turning cylinder 16 is arranged between the movable hinge seat 15 and the bottom support seat 13. Through the extension and contraction of the turning cylinder 16, the turning seat 14 can be rotated around the fixed hinge seat 17, so that the turning seat 14 is turned from a vertical position to a horizontal position. A hoisting seat 18 is fixedly installed on the side of the top surface of the turning seat 14 away from the movable hinge seat 15, and the extending direction of the hoisting seat 18 is perpendicular to the extending direction of the turning seat 14. When the flip seat 14 is in a vertical position, the hoisting seat 18 is in a horizontal position. A number of ribs are provided between the hoisting seat 18 and the flip seat 13 to strengthen the rigidity of the connection between the two. A hoisting cylinder 19 is vertically installed at the central position of one side of the hoisting seat 18 facing the movable hinge seat 15, and a hoisting fixture 191 matching the upper surface of the pipe segment 3 is provided at the end of the hoisting cylinder 19. The hoisting fixture 191 is used to fix the hoisting point 31 on the pipe segment 3 to the hoisting cylinder 19, and the hoisting fixture 191 can be in the form of a conventional hoisting fixture connection structure such as a bolt, a buckle, and a hook.

[0049] On the side of the flip seat 14 away from the lifting seat 18, the sprayer 2 is slidably installed. The sprayer 2 includes a track 21, a track slider 22, a lifting frame 23, a moving mechanism 24, a rotating mechanism 25, a flipping mechanism 26, and a spraying arm 27. The track 21 includes two symmetrical ones, which are fixedly installed on the side of the flip seat 14 away from the lifting seat 18. The track slider 22 is slidably installed on the track 21, and the lifting frame 23 is installed on the side of the two track sliders 22 away from the track 21. The track slider 22 can drive the lifting frame 23 to rise and fall along the flip seat 14. The track slider 22 can move on the track 21 in a self-driving manner. The specific track structure can be a conventional I-shaped track or a ball track. The self-driving moving mechanism of the track slider 22 can be a conventional gear rack moving structure or a wire rope lifting mechanism pulled by a winch. The lifting frame 23 is a rectangular frame structure, such as Figure 3 and Fig. 9 As shown, the lifting frame 23 includes a short side 231 and a long side 232 . The lifting frame 23 is hollow inside, and the hollow space inside is larger than the top projection area of ​​the pipe segment 3 .

[0050] A moving mechanism 24 is installed at the lower part of the lifting frame 23. The moving mechanism 24 can move along the short side 231 and the long side 232 of the frame at the lower part of the lifting frame 23 or move from one side to another side. The moving mechanism 24 is a conventional roller moving mechanism or a gear moving mechanism, and a micro DC variable frequency motor for driving the roller or gear to rotate is arranged inside the moving mechanism 24, for example, it can be a micro DC motor model of N20, 130, 370, 520, etc. At the same time, a groove track or a rack matching the roller or gear of the moving mechanism 24 is arranged at the bottom of the short side 231 and the long side 232 of the lifting frame 23, and the groove track or the rack at the corner connection part of the short side 231 and the long side 232 is smoothly connected to each other, so as to ensure that the moving mechanism 24 can move at the corner position, and move from the short side 231 or the long side 232 to the adjacent long side 232 or the short side 231.

[0051] A rotating mechanism 25 is rotatably mounted at the bottom of the moving mechanism 24. The rotating mechanism 25 can rotate relative to the moving mechanism 24 in a self-driven manner. The rotating axis of the rotating mechanism 25 is perpendicular to the plane where the lifting frame 23 is located. The rotating mechanism 25 is rotatably mounted at the bottom of the moving mechanism 24 through a ball bearing, a roller bearing or a slip ring. Its self-driven rotation is achieved by a conventional micro DC variable frequency motor driving a small gear to rotate relative to a fixed large gear. The rotating mechanism 25 can rotate 360 ​​degrees relative to the moving mechanism 24 and can be fixed at any angle position. The micro DC variable frequency motor can be, for example, a micro DC motor model of N20, 130, 370, 520, etc.

[0052] A flip mechanism 26 is rotatably mounted on the side of the rotating mechanism 25, and the rotation axis of the flip mechanism 26 is perpendicular to the rotation axis of the rotating mechanism 25. The flip mechanism 26 can rotate relative to the rotating mechanism 25 in a self-driven manner. The flip mechanism 26 is rotatably mounted on the side of the rotating mechanism 25 through a ball bearing, a roller bearing or a slip ring. Its self-driven rotation is achieved by a conventional micro DC variable frequency motor driving a small gear to rotate relative to a fixed large gear. The flip mechanism 26 can rotate 180 degrees relative to the rotating mechanism 25 and can only be fixed at two extreme angle positions. The micro DC variable frequency motor can be, for example, a micro DC motor model of N20, 130, 370, 520, etc.

[0053] A spray arm 27 is fixedly mounted on one side of the flip mechanism 26, and nozzles P are arranged equidistantly on the spray arm 27, and the nozzles P are used to spray the curing agent. The length of the spray arm 27 is equal to half the length of the long side 232 of the lifting frame 23, and the length of the spray arm 27 is greater than half the length of the short side 231. By flipping the flip mechanism 26, the nozzles P of the spray arm 27 can be turned upward or downward. The nozzles P are conical atomizing nozzles with adjustable flow rate and spray angle.

[0054] In addition, the present application also includes a controller, which adopts a conventional single-chip microcomputer controller, and the controller is connected to the flip cylinder 16, the hoisting cylinder 19, the moving mechanism 24, the rotating mechanism 25, the flip mechanism 26, and the spray arm 27. It can control the extension and fixation of the flip cylinder 16 and the hoisting cylinder 19, the moving position and speed of the moving mechanism 24, the rotation angle of the rotating mechanism 25, the flip position of the flip mechanism 26, and the opening and closing, flow rate and spray angle of each nozzle P can be controlled separately.

[0055] At the same time, from a top-down angle perpendicular to the plane of the lifting frame 23, the cross-sectional range of the moving mechanism 24 and the rotating mechanism 25 is located within the width range of the short side 231 and the long side 232 of the lifting frame 23, thereby ensuring that the lifting of the lifting frame 23 can allow the pipe segment 3 to pass through the hollow range inside the lifting frame 23.

[0056] The above is the structure of the pipe segment curing agent spraying device of the present application. The following is an explanation of the method of using the pipe segment curing agent spraying device of the present application.

[0057] The segment curing agent spraying device of the present application sprays the upper and lower curved surfaces of the segment 3 by moving the spraying arm 27. There are two basic spraying paths of the spraying arm 27, one of which is as follows: Figure 3 In the short side spraying path shown, the spraying arm 27 moves along the short side 231 of the lifting frame 23 through the moving mechanism 24, and the axis direction of the spraying arm 27 is perpendicular to the short side 231. Under this basic spraying path, the spraying trajectory of the curing agent is parallel to the width direction of the tube segment 3, and the spraying range of the short side spraying path can cover half of the area in the length direction of the tube segment 3. Another method is as follows Fig. 9 In the long side spraying path shown, the spray arm 27 moves along the long side 232 of the lifting frame 23 through the moving mechanism 24, and the axial direction of the spray arm 27 is perpendicular to the long side 232. Under this basic spraying path, the spraying trajectory of the curing agent is parallel to the length direction of the pipe segment 3, and the spraying range of the long side spraying path can cover half of the area in the width direction of the pipe segment 3.

[0058] When the lifting frame 23 is located above the segment 3 and the nozzle P of the spray arm 27 is facing downward, the curing agent spraying on the upper curved surface 32 of the segment 3 is completed through the combination of the short side spraying path and the long side spraying path. When the lifting frame 23 is located below the segment 3 and the nozzle P of the spray arm 27 is facing upward, the curing agent spraying on the lower curved surface 33 of the segment 3 is completed through the combination of the short side spraying path and the long side spraying path.

[0059] Since the upper arc surface 32 and the lower arc surface 33 of the tube segment 3 have a certain curvature, and the size of the tube segment 3 is usually large, when the tube segment 3 is placed upside down, the height difference between the highest point and the lowest point of the arc surface is large, and the nozzle P in the present application moves horizontally during the spraying process. Therefore, in order to ensure the uniformity of the curing agent spraying, the present application sets different control logics for the nozzle P of the short-slice spraying path and the long-side spraying path.

[0060] like Figure 4 It is a side view of the short side spraying path, taking the arc surface 32 on the spraying tube segment 3 as an example. As shown in the figure, since the nozzle P is a conical atomizing nozzle, when the spray arm 27 moves horizontally along the short side 231, the distances of the nozzles P at different positions relative to the arc surface 32 on the tube segment 3 are different along the axial direction of the spray arm 27, and the lower part of some nozzles P near the tail of the spray arm 27 (close to the end of the moving mechanism 24) are not in the air above the tube segment 3 due to the size of the tube segment 3. Under this spray group path, if the spray angle α of each nozzle P is all the same, a spray overlap area S will be generated at the end of the upper arc surface 32. This spray overlap area will cause the curing agent spray to be thicker in the end area of ​​the upper arc surface 32, while the spray layer in the area near the middle is thinner. Therefore, under the short side spray path, the nozzle P on the spray arm 27 needs to adjust the spray angle α according to its distance from the upper arc surface 32 below, so that the spray range of each nozzle P on the pipe segment 3 is as consistent as possible without overlapping or generating gaps.

[0061] like Figure 5 As shown, since the length of the spray arm 27 is half of the length of the long side 232, and the center line of the pipe segment 3 is usually placed at a position directly opposite to the center of the lifting frame 23, the nozzle P1 located at the head of the spray arm 27 (the end farthest from the moving mechanism 24) is closest to the upper arc surface 32. The nozzles P are numbered from this position. The nozzle at the PX position is directly opposite to the end position of the pipe segment 3. The nozzles from the PX to the PN positions are not in the air below or above the pipe segment. During spraying, the nozzles P1 to PX are controlled to be opened, and the nozzles PX to PN are controlled to be closed. At the same time, the controller calculates the spray angles α1 to αX of the nozzles P1 to PX, so that the spray shapes of the nozzles P1 to PX do not overlap with each other and the spray angles α1 to αX decrease in sequence, and at the same time, it is ensured that the spray shapes of the nozzles P1 to PX can cover the entire upper arc surface 32 area under the spray arm 27, so that the spray range of each nozzle P sprayed on the pipe segment 3 is as consistent as possible and does not overlap with each other or generate gaps. The controller stores different combinations of nozzle numbers and spray angles for different sizes of segments. The position of nozzle PX is related to the length of segment 3, and the size and reduction rate of spray angles α1 to αX are related to the length and arc size of segment 3. In addition, in order to ensure the uniformity of spraying, the spray flow Q of nozzles P1 to PX is the same under the short side spraying path, and the spray flow Q of nozzle P does not change with the path time. Figure 6 The figure shows the spray flow rate diagram of nozzles P1 to PN in the short side spraying path; Figure 7 The figure shows the schematic diagram of the spray angle α of the nozzle P1 to PN in the short side spraying path; Figure 8 Shown is a schematic diagram of the nozzle flow Q changing with time under the short side spraying path.

[0062] like Fig. 9 FIG. 2 is a schematic diagram of a long side spraying path, in which the spraying arm 27 moves from one side of the tube segment 3 to the other side along the length direction of the tube segment 3. Fig.10 The figure shows a schematic diagram of the long side spraying path observed from the width direction of the tube segment. The figure shows an example of spraying the curved surface 32 on the tube segment 3. It can be seen from the figure that the axis of the spray arm 27 is parallel to the width direction of the tube segment under the long side spraying path. Since the length of the spray arm 27 is greater than half of the width of the tube segment 3, the spray arm 27 can cover half of the range in the width direction of the tube segment. The nozzle P closest to the tail end of the spray arm 27 (the end closest to the moving mechanism 24) is numbered as P'1, and the nozzle at the P'X position is directly opposite to the center line of the width direction of the tube segment 3. The nozzle closest to the head end is P'N. During spraying, the nozzles P'1 to P'X are controlled to be open, and the nozzles P'X to P'N are closed. At the same time, the controller calculates the spray angles α of the nozzles P'1 to P'X, so that the spray shapes of the nozzles P'1 to P'X do not overlap with each other and the spray angles α are the same, while ensuring that the spray shapes of the nozzles P'1 to P'X can cover the entire upper arc surface 32 area under the spray arm 27, so that the spraying range of each nozzle P on the pipe segment 3 is as consistent as possible without overlapping or generating gaps. During the movement of the spray arm 27 from one end of the tube segment to the other end, the distance between the spray arm 27 and the upper arc surface 32 of the tube segment 3 first decreases and then increases. Therefore, when the spray arm 27 moves to different positions, in order to ensure the uniformity of spraying, the spray angle α of the nozzle P also needs to be increased and then decreased. This can ensure that the spray boundaries of adjacent nozzles P are adjacent, so that the spray shapes of nozzles P'1 to P'X at each position of the spray arm 27 can cover the entire upper arc surface 32 area under the spray arm 27. When the spray arm 27 is located at both ends of the tube segment 3, the spray angle α is the smallest, and when the spray arm 27 is located in the center of the tube segment 3, the spray angle α is the largest, and the rate of change of the reduction and increase of the spray angle is consistent, ensuring that the spray amount at each position of the arc surface of the tube segment 3 is uniform.

[0063] like Fig.11The diagram shows a schematic diagram of the long side spraying path observed from the length direction of the tube segment. The diagram shows an example of spraying the curved surface 32 on the tube segment 3. It can be seen from the figure that during the movement of the spray arm 27 from one end of the tube segment to the other end, the distance between the spray arm 27 and the curved surface 32 on the tube segment 3 first decreases and then increases, and at the same time, all nozzles P on the spray arm 27 are at the same distance from the curved surface 32 on the tube segment 3. Take the moving mechanism 24 driving the spray arm 27 to move a distance C as an example. When the spray arm 27 moves a distance C at the edge of the tube segment 3, the length of the curved surface it sprays is C1, and when the spray arm 27 moves a distance C at the center of the tube segment 3, the length of the curved surface it sprays is C2. Since the spray angles of the nozzles P are the same and the heights of the nozzles P from the cambered surface are different, C1 is greater than C2. If the flow rate Q of the nozzles P is kept constant during the movement, the curing agent sprayed per unit area in the C1 region will be less than the curing agent sprayed per unit area in the C1 region. In other words, the closer to the central position, the thicker the curing agent is sprayed, which leads to uneven curing agent spraying. Therefore, in the process of the spray arm 27 moving from one end of the tube segment to the other, it is necessary to adjust the flow rate Q of all the nozzles P as the moving position changes, that is, the flow rate Q of all the nozzles P decreases first and then increases. When the spray arm 27 is located at both ends of the tube segment 3, the flow rate Q is the largest, and when the spray arm 27 is located at the center of the tube segment 3, the flow rate Q is the smallest, and the rate of change of the flow rate decrease and increase is consistent, so as to ensure that the spray amount at each position of the cambered surface of the tube segment 3 is uniform. The controller stores different combinations of nozzle numbers, spray angles, and spray flow rates Q for different sizes of tube segments, where the nozzle number is related to the width of the tube segment 3, the spray angle is related to the width and arc of the tube segment, and the spray flow rate Q is related to the length and arc of the tube segment. Figure 12-13 They are respectively the schematic diagrams of the spray angle and spray flow rate of each nozzle P at a certain moment t. It can be seen from the figure that at each moment, the schematic diagrams of the spray angle and spray flow rate of each nozzle are the same; Figure 14-15 3 is a schematic diagram of the change of the spray flow rate Q and the spray angle α of the nozzle P with time during the movement of the spray arm 27 from one end of the tube segment to the other end. As shown in the figure, the flow rate Q of all nozzles P first decreases and then increases. When the spray arm 27 is located at both ends of the tube segment 3, the flow rate Q is the largest, and when the spray arm 27 is located at the center of the tube segment 3, the flow rate Q is the smallest. The spray angle α of the nozzle P first increases and then decreases. When the spray arm 27 is located at both ends of the tube segment 3, the spray angle α is the smallest, and when the spray arm 27 is located at the center of the tube segment 3, the spray angle α is the largest, and the rate of change of the spray angle and the spray flow rate is consistent.

[0064] The above only illustrates the spray control logic for the upper arc surface 32 of the tube segment 3 in the short side spray path and the long side spray path. For the lower arc surface 33 of the tube segment 3, its control logic is consistent with the spray control logic of the upper arc surface 32. The specific spray angle and spray flow rate are designed according to the size of the lower arc surface 33. Only in the short side spray path, the spray angles α1 to αX of the nozzles P1 to PX increase successively. In the long side spray path, when the spray arm 27 moves from one end of the tube segment to the other end, the flow rate Q of all nozzles P first increases and then decreases, and the spray angle α of the nozzle P first decreases and then increases.

[0065] The above is the control logic of the nozzle P of the spray arm 27 under different spray paths during the spraying of the upper and lower curved surfaces of the tube segment 3. In order to reduce the number of processes and improve efficiency, and to complete two mutually perpendicular sprayings for the same curved surface of the tube segment 3 at the same time, the present application also sets a corresponding spray arm spray path. The spray arm spray path is a combination of basic spray paths, that is, a combination of a short side spray path and a long side spray path. The cycle of the spray arm spray path is achieved through the joint work of the moving mechanism 24, the rotating mechanism 25, and the flipping mechanism 26. Fig.16 The figure shows a schematic diagram of the spray path of the spray arm of the present application. The movement steps of the spray arm 27 in the spray path of the spray arm are as follows:

[0066] S11: the spraying arm 27 starts from the end of one short side 231 and moves along a short side spraying path and stops at the other end of the short side;

[0067] S12: The spray arm 27 rotates 90 degrees clockwise under the operation of the rotating mechanism 25, so that the axis of the spray arm 27 is parallel to the short side;

[0068] S13: the spraying arm 27 starts from the end of the adjacent long side 232 and travels a long side-by-side spraying path and stops at the other end of the long side;

[0069] S14: The spray arm 27 rotates 90 degrees clockwise under the operation of the rotating mechanism 25, so that the axis of the spray arm 27 is parallel to the long side;

[0070] S15: Repeat S11-S14 to complete a short side spraying path and a long side spraying path in sequence, and then end the spraying.

[0071] According to the spraying path of the spray arm described in S11-S15 above, the spray arm 27 rotates one circle along the four sides of the lifting frame 23 under the operation of the moving mechanism 24 and the rotating mechanism 25. The two short side spraying paths complete the spraying along the width direction of the tube segment 3, and the two long side spraying paths complete the spraying along the length direction of the tube segment 3. Through a spraying path cycle of the spray arm 27, the same curved surface of the tube segment 3 is sprayed twice in mutually perpendicular directions, thereby reducing the spraying process and improving the spraying efficiency.

[0072] Combine the following Fig.17 The steps of spraying the curing agent on the upper and lower curved surfaces of the pipe segment 3 by the turning machine 1 and the spraying machine 2 of the present application are described as follows:

[0073] S1: The turning machine 1 runs until the turning seat 14 is in a vertical position, the lifting frame 23 of the spraying machine 2 moves downward so that the lifting frame 23 is located above the upper curved surface 32 of the tube segment 3, the turning mechanism 26 rotates the spraying arm 27 so that the nozzle P faces the upper curved surface 32 of the tube segment 3, and the spraying arm 27 completes the spraying of the upper curved surface 32 of the tube segment 3 according to the spraying path of the spraying arm;

[0074] S2: After the lifting cylinder 19 of the turning machine 1 is extended to lift the pipe segment 3, the lifting cylinder 19 is retracted to lift the pipe segment 3;

[0075] S3: the lifting frame 23 of the spraying machine 2 moves downward so that the segment 3 passes through the lifting frame 23, so that the lifting frame 23 is located below the lower arc surface 33 of the segment 3, the flip mechanism 26 rotates the spraying arm 27 so that the nozzle P faces the lower arc surface of the segment 3, and the spraying arm 27 completes the spraying of the lower arc surface 33 of the segment 3 according to the spraying path of the spraying arm;

[0076] S4: The turning machine 1 extends the turning cylinder 16 to rotate the turning seat 14 from the vertical position to the horizontal position, thereby completing the turning of the pipe segment 3.

[0077] Through the above segment curing agent spraying device and its use method, the segment flipping and spraying process are combined, and at the same time, the segment does not need to be erected when spraying the curing agent, and the curing agent spraying is completed in a horizontal state. At the same time, through a spraying arm spraying path cycle of the spraying arm 27, the same curved surface of the segment 3 is sprayed twice in mutually perpendicular directions, which reduces the spraying process and improves the spraying efficiency. The corresponding nozzle control logic set under the long side spraying path and the short side spraying path ensures the uniformity of the spraying.

[0078] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A segment curing agent spraying device, comprising a turning machine; The turning machine comprises a base, a support frame, a bottom support seat, a turning seat, a movable hinge seat, a turning cylinder, a fixed hinge seat, a lifting seat, and a lifting cylinder. The support frame is erected on the base, a bottom support seat is arranged at the lower part of the support frame, the middle part of the bottom surface of the turning seat is hingedly mounted on one side of the top of the support frame through a fixed hinge seat, a movable hinge seat is fixedly arranged at the end of the turning seat, a turning cylinder is arranged between the movable hinge seat and the bottom support seat, a lifting seat is fixedly mounted on one side of the top surface of the turning seat away from the movable hinge seat, the extending direction of the lifting seat is perpendicular to the extending direction of the turning seat, and a lifting cylinder is vertically mounted at the central position of one side of the lifting seat facing the movable hinge seat, characterized in that: A sprayer is slidably installed on one side of the turning seat away from the lifting seat, and the sprayer is slidably arranged on the turning machine to spray the curing agent on the upper and lower curved surfaces of the inverted pipe segments; The spraying machine includes a track, a track slider, a lifting frame, a moving mechanism, a rotating mechanism, a flipping mechanism, and a spraying arm; the track includes two symmetrical tracks, which are fixedly installed on the side of the flipping seat away from the hanging seat; the track slider is slidably installed on the track, and the lifting frame is installed on the side of the two track sliders away from the track; The track slider drives the lifting frame to move up and down along the flip seat; The lifting frame is a rectangular frame structure, including a short side and a long side, and the lifting frame is hollow inside, wherein the hollow space is larger than the top view projection area of ​​the pipe segment; A moving mechanism is installed at the lower part of the lifting frame, and the moving mechanism moves along the short side and the long side of the frame at the lower part of the lifting frame or moves from one side to another side; a rotating mechanism is rotatably installed at the bottom of the moving mechanism, and the rotating mechanism rotates relative to the moving mechanism in a self-driven manner, and the rotating axis of the rotating mechanism is perpendicular to the plane where the lifting frame is located; a flipping mechanism is rotatably installed on the side of the rotating mechanism, and the rotating axis of the flipping mechanism is perpendicular to the rotating axis of the rotating mechanism; the flipping mechanism rotates relative to the rotating mechanism in a self-driven manner; a spray arm is fixedly installed on one side of the flipping mechanism, and nozzles are equidistantly arranged on the spray arm, the length of the spray arm is equal to half the length of the long side of the lifting frame, and the length of the spray arm is greater than half the length of the short side; at a top-down angle perpendicular to the plane of the lifting frame, the cross-sectional range of the moving mechanism and the rotating mechanism is within the width range of the short side and the long side of the lifting frame.

2. A segment curing agent spraying device according to claim 1, characterized in that: The nozzle adopts a conical atomizing nozzle with adjustable flow rate and spray angle.

3. A segment curing agent spraying device according to claim 2, characterized in that: It also includes a controller, which is connected to the turning cylinder, the lifting cylinder, the moving mechanism, the rotating mechanism, the turning mechanism, and the spray arm control. The controller can individually control the opening and closing, flow rate, and spray angle of each nozzle P.

4. The method for using the segment curing agent spraying device according to claim 3, characterized in that: The steps for the turning machine and the spraying machine to spray the curing agent on the upper and lower curved surfaces of the pipe segment are as follows: S1: The turning machine runs until the turning seat is in a vertical position, the lifting frame of the spraying machine moves downward so that the lifting frame is located above the upper curved surface of the pipe segment, the turning mechanism rotates the spraying arm so that the nozzle faces the upper curved surface of the pipe segment, and the spraying arm moves according to the spraying path of the spraying arm to complete the spraying of the upper curved surface of the pipe segment; S2: After the lifting cylinder of the tilting machine extends to lift the pipe segment, the lifting cylinder contracts to lift the pipe segment up; S3: The lifting frame of the sprayer moves downward so that the segment passes through the lifting frame, so that the lifting frame is located below the lower arc surface of the segment, the flip mechanism rotates the spray arm so that the nozzle faces the lower arc surface of the segment, and the spray arm moves according to the spraying path of the spray arm to complete the spraying of the lower arc surface of the segment; S4: The turning machine extends the turning cylinder to rotate the turning seat from a vertical position to a horizontal position to complete the turning of the pipe segment.

5. The method for using the segment curing agent spraying device according to claim 4, characterized in that: The movement of the spray arm according to the spray path of the spray arm comprises the following steps: S11: the spray arm starts from the end of one short side and moves along a short side spraying path and then stops at the other end of the short side; S12: The spray arm rotates 90 degrees clockwise under the operation of the rotating mechanism, so that the axis of the spray arm is parallel to the short side; S13: the spraying arm starts from the end of the adjacent long side and travels along a long side spraying path and stops at the other end of the long side; S14: The spray arm rotates 90 degrees clockwise under the operation of the rotating mechanism, so that the axis of the spray arm is parallel to the long side; S15: Repeat S11-S14 to complete a short side spraying path and a long side spraying path in sequence, and then end the spraying.

6. The method for using the segment curing agent spraying device according to claim 5, characterized in that: The short side spraying path is that the spray arm moves along the short side of the lifting frame through the moving mechanism, and the axis direction of the spray arm is perpendicular to the short side; the long side spraying path is that the spray arm moves along the long side of the lifting frame through the moving mechanism, and the axis direction of the spray arm is perpendicular to the long side.

7. The method for using the segment curing agent spraying device according to claim 6, characterized in that: The nozzles on the spray arm in the short side spray path adjust the spray angle of each nozzle according to the distance from the lower upper arc surface or the distance from the upper lower arc surface, so that the spray angles of the nozzles along the spray arm direction decrease or increase in sequence; in the short side spray path, the spray flow rate of each nozzle is the same, and the spray flow rate of the nozzle does not change with the path and time; In the long-side spraying path, the spray angle of the nozzle on the spray arm first decreases and then increases, or first increases and then decreases, as the spray arm moves, but the spray angle of each nozzle is the same at the same time; in the long-side spraying path, the spray flow rate of the nozzle on the spray arm first decreases and then increases, or first increases and then decreases, as the spray arm moves, but the spray flow rate of each nozzle is the same at the same time.

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