A prefabricated highway small box beam end mold device with variable side angle

Abstract

The invention discloses an end mold device for a prefabricated highway small box girder with variable side angles, and specifically relates to the technical field of highway bridge construction. According to the invention, a web template 1 and a web template 2 are both installed in alignment with the fitting part of the end of the box girder, and a linear mold withdrawal component pulls the web template 2 to move linearly, driving the end of a mounting seat 3 and a rotating template 4 to rotate, and driving the connecting cross plate and the rotating template 3 to move together. At this time, one end of the rotating template 3 rotates with the mounting seat 2 to obtain a box girder with this end angle; the linear mold withdrawal component pulls the web template to move linearly, driving the end of the mounting seat 2 and the rotating template 3 to rotate, and driving the connecting cross plate and the rotating template 4 to move together. At this time, one end of the rotating template 4 rotates with the mounting seat 3 to obtain the end of the box girder with different angles, which are adapted to the changing angle of the end of the prefabricated box girder, and there is no need to remove the mold. A set of end mold equipment is suitable for supporting the molds of various prefabricated box girder ends.

Description

Technical Field

[0001] The invention relates to the technical field of highway bridge construction, in particular to a prefabricated highway small box beam end mold device with variable side angles. Background Art

[0002] In the process of bridge construction, considering the construction efficiency and quality, more and more projects adopt the construction method of prefabricated box girders. In the prefabrication process, one of the necessary large-scale construction equipment is the formwork device for casting the box girder. Combined with the current design of the smart beam factory, the formwork needs to be able to be quickly demolded when the concrete pouring is completed and the demolding conditions are met, and at the same time, it can be quickly supported to reduce the time of dismantling the formwork. Due to the changes in the end angles of the prefabricated box girder, the end formwork device is required to continuously adjust the angle to match it. The existing highway box girder uses a set of end forms at one angle. During use, the formwork needs to be manually dismantled to replace the formwork at another angle, which increases the labor intensity of the workers and affects the efficiency of beam making. Summary of the invention

[0003] The purpose of the present invention is to provide a prefabricated small highway box girder end mold device with variable side angle, so as to solve the problem mentioned in the above background technology that a set of highway box girder end molds can only be used at one angle and are limited in applicability.

[0004] The present invention can be realized by the following technical scheme: a prefabricated highway small box girder end mold device with variable side angle, comprising a box girder, a side mold assembly for adjusting the angle of the box girder end, and a linear mold withdrawal assembly for pulling the side mold assembly for longitudinal movement;

[0005] The side formwork assembly comprises a web formwork 1 and a web formwork 2 adapted to engage with the end of the box beam, the web formwork 1 and the web formwork 2 are arranged in irregular shapes and are respectively arranged on both sides of the end of the box beam, and a mounting seat 1 and a mounting seat 2 are respectively fitted and installed on both sides of the web formwork 1, one end of the mounting seat 1 is rotatably connected to a rotating formwork 1, and one end of the mounting seat 2 is rotatably connected to a rotating formwork 3;

[0006] The two side surfaces of the web template two are respectively fitted with a mounting seat three and a mounting seat four, one end of the mounting seat three is rotatably connected to a rotating template four, one end of the mounting seat four is rotatably connected to a rotating template two, and a connecting cross plate is fixedly connected between the rotating template four and the rotating template three.

[0007] A further technical improvement of the present invention is that the rotating template 1, rotating template 3, rotating template 4 and rotating template 2 are all arranged in close contact with the end surface of the box beam, and the connection points between the rotating template 1 and the mounting seat 1, the mounting seat 2 and the rotating template 3, the rotating template 4 and the mounting seat 3, and the mounting seat 4 and the rotating template 2 are all rotatably connected through pins.

[0008] A further technical improvement of the present invention is that a strip mounting hole 1 is provided on the top outer wall surface of the web template 1 and the web template 2, the cross-sections of the mounting seat 1, the mounting seat 2, the mounting seat 3 and the mounting seat 4 are all arranged in a triangular shape, and the ends of the mounting seat 1 and the mounting seat 2 as well as the ends of the mounting seat 3 and the mounting seat 4 are arranged opposite to each other and are flush with the top surfaces of the web template 1 and the web template 2 respectively, and the web template 1 and the web template 2 are respectively fixed to the mounting seat 1 and the mounting seat 2 as well as the mounting seat 3 and the mounting seat 4 by bolts.

[0009] A further technical improvement of the present invention is that the linear demolding assembly includes a base, two brackets and two inclined brackets are installed on the top surface of the base, a screw transmission assembly is arranged inside each of the brackets, each set of screw transmission assemblies includes two upper and lower screws and a limit rod arranged between the two screws, and the ends of the two screws and the limit rod are fixed to the mounting end surface of the web template two.

[0010] A further technical improvement of the present invention is that the screw transmission assembly also includes an electric motor installed in the bracket through a fixed frame, the driving end of the electric motor is converted into two output ends after passing through a reduction reversing box, each output end is connected to a steering linear drive housing, a fixed seat is provided on one side of the steering linear drive housing and is fixedly installed on the inner wall surface of the bracket, a worm gear is provided on the external threaded sleeve of one end of the screw passing through the steering linear drive housing, a worm connected to the output end is installed in the steering linear drive housing, and the worm gear is meshed with the worm gear.

[0011] A further technical improvement of the present invention is that a plurality of side rollers rotatably mounted on an inclined bracket are arranged on the top surface of the base, and the side rollers on both sides are respectively arranged to fit the outer wall surfaces of the web template one and the web template two, and the side width of the inclined bracket is smaller than the side width of the bracket, and an infrared laser that emits infrared laser toward the upper end of the box beam is installed on the outer wall surface of the end of the bracket, and the laser beam emitted by the infrared laser is not blocked by the web template one or the web template two.

[0012] A further technical improvement of the present invention is that a vacant cavity is provided on the top surface of the base close to the box girder, and a calibration lifting assembly for lifting the height of the web template one or the web template two is installed inside the vacant cavity, and the calibration lifting assembly includes an electric push rod arranged in the middle of the bottom surface of the inner cavity of the vacant cavity, and the pushing end of the electric push rod is fixedly connected to a support seat, and a bottom roller placed on the bottom of the web template one or the web template two is rollingly installed inside the support seat, and the bottom of the side roller is adjacent to the edge of the vacant cavity.

[0013] A further technical improvement of the present invention is that telescopic rods are arranged in the inner cavity of the vacant cavity and on both sides of the electric push rod, and the extended ends of the telescopic rods are fixed to the bottom surface of the support seat.

[0014] A further technical improvement of the present invention is that a pull-out box 1 and a pull-out box 2 are respectively fitted on the inner wall surfaces of the bottom of the web template 1 and the web template 2, a connecting vertical plate is installed between the pull-out box 1 and the pull-out box 2, two strip-shaped mounting holes 2 are provided on the surfaces of the pull-out box 1 and the pull-out box 2, and the pull-out box 1 and the pull-out box 2 are fixed to the connecting vertical plate by bolts.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The web template 1 and the web template 2 are both installed in alignment with the fitting part of the end of the box beam. The angle between the rotating template 1 and the end of the box beam is adaptively changed by rotating the pin shaft. The web template 2 is pulled by the linear demoulding component to move linearly, driving the end of the mounting seat 3 and the rotating template 4 to rotate, and driving the connecting cross plate and the rotating template 3 to move together. At this time, one end of the rotating template 3 rotates with the mounting seat 2 to obtain a box beam with this end angle; the linear demoulding component pulls the web template to move linearly, driving the end of the mounting seat 2 and the rotating template 3 to rotate, and driving the connecting cross plate and the rotating template 4 to move together. At this time, one end of the rotating template 4 rotates with the mounting seat 3 to obtain an end of the box beam with a different angle from the above-mentioned embodiment, which is suitable for the casting of box beams with different end angles and adapted to the changing angle of the end of the prefabricated box beam. There is no need to remove the mold. A set of end mold equipment is suitable for the support of various prefabricated box beam ends;

[0017] 2. During the entire end mold process, the rotating template 1 and the rotating template 2 can be moved to rotate with the mounting seat 1 and the mounting seat 4 respectively. At this time, the rotating template 1 and the rotating template 2 are not in contact with the end of the box beam, which is convenient for casting an angled end;

[0018] 3. Place the web template 1 and the web template 2 on the bottom roller and fit them against the side rollers. The infrared laser is emitted by the infrared laser toward the upper end of the box beam. The infrared light beam is shone along the inner side of the web template 1 and the web template 2 toward the end of the box beam. Compare whether the position on the web template 1 and the web template 2 matches the position of the end of the box beam. Then the electric push rod drives the support seat to rise until the irradiation position of the inner side of the web template 1 and the web template 2 coincides with the position of the laser beam toward the upper end of the box beam. The rise is stopped and the height is automatically aligned. There is no need to manually find the height of the web template 1 and the web template 2. Then the ends of the lead screw and the limit rod are fixed to the installation end faces of the web template 1 and the web template 2 to facilitate the control of the movement of the web template 1 or the web template 2. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0020] Figure 1 It is a schematic diagram of the external structure of the present invention;

[0021] Figure 2 It is a schematic diagram of the three-dimensional structure of the web template 1 and the web template 2 of the present invention;

[0022] Figure 3 For the present invention Figure 1 A partial enlarged view of the middle A;

[0023] Figure 4 For the present invention Figure 2 A partial enlarged view of point B in the middle;

[0024] Figure 5 For the present invention Figure 1 A partial enlarged view of point C in the middle;

[0025] Figure 6 This is a cross-sectional view of the installation of the support base of the present invention.

[0026] In the figure: 1. web template 1; 2. web template 2; 3. rotating template 1; 4. rotating template 2; 5. rotating template 3; 6. rotating template 4; 7. mounting seat 1; 8. mounting seat 2; 9. mounting seat 3; 10. mounting seat 4; 11. connecting cross plate; 12. pull-out box 1; 13. pull-out box 2; 14. connecting vertical plate; 15. bracket; 16. lead screw; 17. motor; 18. base; 19. box beam; 20. side roller; 21. infrared laser; 22. strip mounting hole 2; 23. strip mounting hole 1; 24. limit rod; 25. fixed seat; 26. vacant cavity; 27. electric push rod; 28. telescopic rod; 29. ​​support seat; 30. bottom roller; 31. steering linear drive housing. DETAILED DESCRIPTION

[0027] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation methods, structures, features and effects of the present invention are described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0028] See also Figure 1-Figure 6As shown, the present invention provides a prefabricated highway small box girder end mold device with variable side angles, including a box girder 19, a side mold assembly for adjusting the angle of the end of the box girder 19, and a linear mold withdrawal assembly for pulling the side mold assembly to make longitudinal movement; the side mold assembly includes a web template 1 and a web template 2 adapted to fit with the end of the box girder 19, the web template 1 and the web template 2 are set in irregular shapes and are respectively arranged on both sides of the end of the box girder 19, and the two sides of the web template 1 are respectively fitted with a mounting seat 17 and a mounting seat 28, and one end of the mounting seat 17 is provided. The web template 2 is rotatably connected with a rotating template 3, and one end of the mounting seat 2 8 is rotatably connected with a rotating template 3 5; the two sides of the web template 2 are respectively fitted with mounting seats 3 9 and mounting seats 4 10, one end of the mounting seat 3 9 is rotatably connected with a rotating template 4 6, and one end of the mounting seat 4 10 is rotatably connected with a rotating template 2 4, and a connecting cross plate 11 is fixedly connected between the rotating template 4 6 and the rotating template 3 5. In the initial state, the mounting seat 1 7 and the rotating template 1 3, the mounting seat 2 8 and the rotating template 3 5, the rotating template 4 6 and the mounting seat 3 9 and the mounting seat The seat four 10 and the rotating template two 4 have been rotated and installed, and the rotating template three 5 and the rotating template four 6 are fixed by connecting the cross plate 11, and the mounting seat one 7 and the mounting seat two 8 are respectively installed on the two sides of the web template one 1, wherein the mounting seat one 7 and the mounting seat two 8 slide along the surface of the web template one 1 and are adaptively installed, and the mounting seat three 9 and the mounting seat four 10 are respectively installed on the two sides of the web template two 2, and the mounting seat three 9 and the mounting seat four 10 can slide along the surface of the web template two 2 and are adaptively installed, and then the linear mold withdrawal assembly is connected to the web template one 1 and the web template 2 2 are installed. When the end mold is formed, the web template 1 and the web template 2 2 are close to the end of the box beam 19 and fit with the end surface of the box beam 19. The fitting parts of the web template 1 and the end of the box beam 19 are aligned. The web template 2 2 makes a linear longitudinal movement, and the mounting seat 3 9 moves with the web template 2 2. The end of the mounting seat 3 9 rotates with the rotating template 4 6 and drives the connecting cross plate 11 and the rotating template 3 5 to move together. At this time, one end of the rotating template 3 5 rotates with the mounting seat 2 8 to obtain the box beam 19 with this end angle.Another method is that the web template 1 makes a linear longitudinal movement, the mounting seat 2 8 moves with the web template 1, the end of the mounting seat 2 8 rotates with the rotating template 3 5 and drives the connecting cross plate 11 and the rotating template 4 6 to move together, at this time, one end of the rotating template 4 6 rotates with the mounting seat 3 9, and the end of the box beam 19 with a different angle from the above embodiment is obtained, and in the whole end mold process, the rotating template 1 3 and the rotating template 2 4 can be moved to rotate with the mounting seat 1 7 and the mounting seat 4 10 respectively, at this time, the rotating template 1 3 and the rotating template 2 4 are not in contact with the end of the box beam 19, which is convenient for casting an angled end, adapting to the casting of box beams 19 with different end angles, and adapting to the changing angle of the end of the prefabricated box beam, without the need to remove the mold, a set of end mold equipment is suitable for supporting the molds of various prefabricated box beam ends, and has high applicability. ;

[0029] See also Figure 1 and Figure 2 As shown, the rotating template 1 3, the rotating template 3 5, the rotating template 4 6 and the rotating template 2 4 are all arranged to fit the end surface of the box beam 19, and the connection points between the rotating template 1 3 and the mounting seat 1 7, the mounting seat 2 8 and the rotating template 3 5, the rotating template 4 6 and the mounting seat 3 9, and the mounting seat 4 10 and the rotating template 2 4 are all connected by rotation through the pin shaft. When the angle is adjusted, the web template 1 and the web template 2 2 are aligned and installed with the fitting part of the end of the box beam 19. The angle between the rotating template 1 3 and the end of the box beam 19 is adaptively changed by the rotation of the pin shaft, and the linear mold withdrawal assembly is pulled The web template 2 moves linearly, driving the end of the mounting seat 3 9 and the rotating template 4 6 to rotate, and driving the connecting cross plate 11 and the rotating template 3 5 to move together. At this time, one end of the rotating template 3 5 rotates with the mounting seat 2 8 to obtain a box beam 19 with this end angle; the linear demolding assembly pulls the web template 1 to move linearly, driving the end of the mounting seat 2 8 and the rotating template 3 5 to rotate, and making the connecting cross plate 11 and the rotating template 4 6 move together. At this time, one end of the rotating template 4 6 rotates with the mounting seat 3 9 to obtain a box beam 19 with a different end angle.

[0030] See also Figure 2 and Figure 3As shown, a strip-shaped mounting hole 23 is provided on the top outer wall surface of the web template 1 and the web template 2, and the cross-sections of the mounting seat 1 7, the mounting seat 2 8, the mounting seat 3 9 and the mounting seat 4 10 are all set to be triangular, and the ends of the mounting seat 1 7 and the mounting seat 2 8 as well as the mounting seat 3 9 and the mounting seat 4 10 are set oppositely and are flush with the top surfaces of the web template 1 and the web template 2 2 respectively, and the web template 1 and the web template 2 2 are respectively fixed to the mounting seat 1 7 and the mounting seat 2 8 as well as the mounting seat 3 9 and the mounting seat 4 10 by bolts, and the mounting seat 1 7 and the mounting seat 2 8 are both slid on the side of the web template 1 along the strip-shaped mounting hole 23, and then the mounting seat 1 7 and the mounting seat 2 8 are installed on the side of the web template 1 by bolts, and the mounting seat 3 9 and the mounting seat 4 10 are installed on the web template 2 2 in the same way.

[0031] See also Figure 1 and Figure 5 As shown, the linear mold withdrawal assembly includes a base 18, on the top surface of which are mounted two brackets 15 and two inclined brackets, each bracket 15 is provided with a screw drive assembly, each set of screw drive assemblies includes two upper and lower screws 16 and a limit rod 24 provided between the two screws 16, the ends of the two screws 16 and the limit rod 24 are fixed to the mounting end surface of the web template 2, the web template 2 is pushed to move by the screw 16, and the limit rod 24 is limited and slid on the bracket 15 to increase stability during movement.

[0032] See also Figure 5 As shown, the screw drive assembly also includes an electric motor 17 installed in the bracket 15 through a fixed frame. The driving end of the electric motor 17 is converted into two output ends after passing through a reduction reversing box. Each output end is connected to a steering linear drive housing 31. A fixed seat 25 is provided on one side of the steering linear drive housing 31 and is fixedly installed on the inner wall surface of the bracket 15. The screw 16 passes through the steering linear drive housing 31 and an external thread sleeve is provided with a worm gear at one end. A worm connected to the output end is installed in the steering linear drive housing 31, and the worm is meshed with the worm gear. Through the meshing of the worm and the worm gear in the steering linear drive housing 31, the worm gear drives the screw 16 to make longitudinal linear motion, and the web template 1 or the web template 2 2 is driven to move through the screw 16 to adapt to the casting of box beams 19 with different end angles.

[0033] See also Figure 1As shown, the top surface of the base 18 is provided with a plurality of side rollers 20 rotatably mounted on an inclined bracket, and the side rollers 20 on both sides are respectively arranged to fit the outer wall surfaces of the web template 1 and the web template 2, and the side width of the inclined bracket is smaller than the side width of the bracket 15. An infrared laser 21 for emitting infrared laser toward the upper end of the box beam 19 is installed on the outer wall surface of the end of the bracket 15. The laser beam emitted by the infrared laser 21 is not blocked by the web template 1 or the web template 2, and the infrared laser 21 emits the infrared laser toward the upper end of the box beam 19. The infrared beam is irradiated toward the end of the box beam 19 along the inner side surfaces of the web template 1 and the web template 2, and the positions on the web template 1 and the web template 2 are compared with the positions of the end of the box beam 19 to see if they match, so as to facilitate the angle adjustment of the web template 1 and the web template 2 to the end of the box beam 19.

[0034] See also Figure 6 As shown, a vacant cavity 26 is provided on the top surface of the base 18 near the box beam 19, and a calibration lifting assembly for lifting the height of the web template 1 or the web template 2 is installed inside the vacant cavity 26. The calibration lifting assembly includes an electric push rod 27 arranged in the middle of the bottom surface of the inner cavity of the vacant cavity 26, and the pushing end of the electric push rod 27 is fixedly connected to a support seat 29. The inner surface of the support seat 29 is rollingly installed with a bottom roller 30 placed on the bottom of the web template 1 or the web template 2. The bottom of the side roller 20 is adjacent to the edge of the vacant cavity 26, and the inner cavity of the vacant cavity 26 and the two sides of the electric push rod 27 are provided with telescopic Rod 28, the extended end of the telescopic rod 28 is fixed to the bottom surface of the support seat 29, and the support seat 29 is driven to rise by the electric push rod 27. The bottom roller 30 in the support seat 29 raises the outer side surfaces of the web template 1 and the web template 2 along the side roller 20 until the irradiation position of the inner side surfaces of the web template 1 and the web template 2 coincides with the position of the laser beam above the end of the box beam 19, and then the rise is stopped, and then the ends of the lead screw 16 and the limit rod 24 are fixed to the installation end surfaces of the web template 1 and the web template 2, so as to facilitate the control of the movement of the web template 1 or the web template 2.

[0035] See also Figure 4As shown, a pull-out box 12 and a pull-out box 2 13 are respectively fitted on the inner wall surfaces of the bottom of the web template 1 and the web template 2, a connecting vertical plate 14 is installed between the pull-out box 12 and the pull-out box 2 13, and two strip-shaped mounting holes 22 are provided on the surfaces of the pull-out box 12 and the pull-out box 2 13. The pull-out box 12 and the pull-out box 2 13 are both fixed to the connecting vertical plate 14 by bolts. The pull-out box 12 is first fixed to the bottom of the web template 1, and then the bottom of the web template 22 is fixed to the pull-out box 2 13, and finally the connecting vertical plate 14 is used to fix the pull-out box 12 and the pull-out box 2 13 together to achieve the fixation between the web template 1 and the web template 2. When the web template 1 and the web template 2 are moved, the connecting vertical plate 14 needs to be removed from the pull-out box 12 and the pull-out box 2 13.

[0036] See also Figure 1-Figure 6 As shown, the present invention also provides a method for using a prefabricated highway small box beam end mold device with a variable side angle, and the method comprises the following steps:

[0037] Step 1: Place the outer surfaces of the web template 1 and web template 2 that have been connected together on the bottom roller 30 in the calibration lifting assembly and fit them to the surface of the side roller 20. Then, the infrared laser 21 on the bracket 15 emits an infrared laser toward the upper end of the box beam 19. The infrared beam shines along the inner side of the web template 1 and the web template 2 toward the end of the box beam 19. After comparison, the electric push rod 27 is controlled to move. The installation parts of the web template 1 and the web template 2 are lifted to the same height as the fitting part of the irradiated end of the box beam 19 through the upward movement of the electric push rod 27.

[0038] Step 2: After the web template 1 and the web template 2 are aligned with the fitting parts of the end of the box beam 19, the two lead screws 16 and the limit rods 24 in the brackets 15 on both sides are fixed to the mounting end faces of the web template 1 and the web template 2, respectively, and the two lead screws 16 linearly push the web template 1 and the web template 2 to move toward the end face of the box beam 19;

[0039] Step three, the web formwork 1 and the web formwork 2 2 are both close to the end of the box girder 19 and aligned with the fitting part of the end of the box girder 19, the web formwork 2 2 makes a linear longitudinal movement, the mounting seat 3 9 moves with the web formwork 2 2, the end of the mounting seat 3 9 rotates with the rotating formwork 4 6 and drives the connecting cross plate 11 and the rotating formwork 3 5 to move together, at this time, one end of the rotating formwork 3 5 rotates with the mounting seat 2 8; the web formwork 1 makes a linear longitudinal movement, the mounting seat 2 8 moves with the web formwork 1 1, the end of the mounting seat 2 8 rotates with the rotating formwork 3 5 and drives the connecting cross plate 11 and the rotating formwork 4 6 to move together, at this time, one end of the rotating formwork 4 6 rotates with the mounting seat 3 9 to adapt to the casting of the box girder 19 with different end angles.

[0040] When the present invention is in use, firstly, the web template 1 and the web template 2 are placed on the bottom roller 30 and fit against the side roller 20, and the infrared laser 21 emits an infrared laser toward the upper end of the box beam 19, and the infrared light beam shines toward the end of the box beam 19 along the inner side of the web template 1 and the web template 2, and compares whether the position on the web template 1 and the web template 2 matches the position of the end of the box beam 19, and then the electric push rod 27 drives the support seat 29 to rise until the irradiation position of the inner side of the web template 1 and the web template 2 coincides with the position of the laser light beam toward the upper end of the box beam 19, and the rise is stopped, and the height is automatically aligned, and there is no need to manually find the height of the web template 1 and the web template 2, and then the ends of the lead screw 16 and the limit rod 24 are fixed to the installation end faces of the web template 1 and the web template 2, so as to facilitate the control of the movement of the web template 1 or the web template 2;

[0041] The web template 1 and the web template 2 are both installed in alignment with the fitting part of the end of the box beam 19, and the angle between the rotating template 13 and the end of the box beam 19 is adaptively changed by the rotation of the pin shaft. The web template 22 is pulled by the linear demoulding assembly to move linearly, driving the end of the mounting seat 39 and the rotating template 46 to rotate, and driving the connecting cross plate 11 and the rotating template 35 to move together. At this time, one end of the rotating template 35 rotates with the mounting seat 28 to obtain the box beam 19 with this end angle; the linear demoulding assembly pulls the web template 1 to move linearly, driving the end of the mounting seat 28 and the rotating template 35 to rotate, and driving the connecting cross plate 11 and the rotating template 46 to move together. At this time, one end of the rotating template 46 rotates with the mounting seat 39 to obtain the end of the box beam 19 with a different angle from the above-mentioned embodiment, which is suitable for the casting of the box beam 19 with different end angles, and is compatible with the changing angle of the end of the prefabricated box beam, without the need to remove the mold, and a set of end mold equipment is suitable for the support molds of various prefabricated box beam ends;

[0042] During the entire end mold process, the rotating template 1 3 and the rotating template 2 4 can be moved to rotate with the mounting seat 1 7 and the mounting seat 4 10 respectively. At this time, the rotating template 1 3 and the rotating template 2 4 are not in contact with the end of the box beam 19, which is convenient for casting an angled end.

[0043] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A prefabricated highway small box girder end mold device with variable side angle, characterized in that: It comprises a box beam (19), a side mold assembly for adjusting the angle of the end of the box beam (19), and a linear mold withdrawal assembly for pulling the side mold assembly to move longitudinally; The side formwork assembly comprises a web formwork 1 (1) and a web formwork 2 (2) adapted to engage with the end of the box beam (19); the web formwork 1 (1) and the web formwork 2 (2) are arranged in irregular shapes and are respectively arranged on both sides of the end of the box beam (19); a mounting seat 1 (7) and a mounting seat 2 (8) are respectively fitted and installed on both side surfaces of the web formwork 1 (1); one end of the mounting seat 1 (7) is rotatably connected to a rotating formwork 1 (3); and one end of the mounting seat 2 (8) is rotatably connected to a rotating formwork 3 (5); The two side surfaces of the web template 2 (2) are respectively fitted with a mounting seat 3 (9) and a mounting seat 4 (10); one end of the mounting seat 3 (9) is rotatably connected to the rotating template 4 (6); one end of the mounting seat 4 (10) is rotatably connected to the rotating template 2 (4); a connecting transverse plate (11) is fixedly connected between the rotating template 4 (6) and the rotating template 3 (5); The linear die-retracting assembly comprises a base (18), on the top surface of which two brackets (15) and two oblique brackets are mounted, each bracket (15) is provided with a screw transmission assembly inside, each set of screw transmission assemblies comprises two upper and lower screws (16) and a limit rod (24) arranged between the two screws (16), and the ends of the two screws (16) and the limit rod (24) are fixed to the mounting end surface of the second web template (2); The top surface of the base (18) is provided with a plurality of side rollers (20) rotatably mounted on an inclined bracket, the side rollers (20) on both sides are respectively arranged to fit with the outer wall surfaces of the web template one (1) and the web template two (2), the side width of the inclined bracket is smaller than the side width of the bracket (15), and an infrared laser (21) is installed on the outer wall surface of the end of the bracket (15) for emitting infrared laser toward the upper end of the box beam (19), and the laser beam emitted by the infrared laser (21) is not blocked by the web template one (1) or the web template two (2); A vacant cavity (26) is provided on the top surface of the base (18) close to the box beam (19), and a calibration lifting assembly for lifting the height of the web template one (1) or the web template two (2) is installed inside the vacant cavity (26), and the calibration lifting assembly includes an electric push rod (27) arranged in the middle of the bottom surface of the inner cavity of the vacant cavity (26), and the pushing end of the electric push rod (27) is fixedly connected to a support seat (29), and a bottom roller (30) placed on the bottom of the web template one (1) or the web template two (2) is rotatably installed inside the support seat (29), and the bottom of the side roller (20) is adjacent to the edge of the vacant cavity (26); The rotating template 1 (3), the rotating template 3 (5), the rotating template 4 (6) and the rotating template 2 (4) are all arranged in close contact with the end surface of the box beam (19), and the connection points between the rotating template 1 (3) and the mounting seat 1 (7), the mounting seat 2 (8) and the rotating template 3 (5), the rotating template 4 (6) and the mounting seat 3 (9), and the mounting seat 4 (10) and the rotating template 2 (4) are all rotatably connected via pins.

2. The end mold device of a prefabricated highway small box beam with variable side angle according to claim 1 is characterized in that: The top outer wall surfaces of the web templates 1 (1) and 2 (2) are both provided with strip-shaped mounting holes 1 (23); the cross-sections of the mounting seats 1 (7), 2 (8), 3 (9) and 4 (10) are all arranged in a triangular shape; the ends of the mounting seats 1 (7) and 2 (8) as well as the ends of the mounting seats 3 (9) and 4 (10) are arranged opposite to each other and are respectively flush with the top surfaces of the web templates 1 (1) and 2 (2); the web templates 1 (1) and 2 (2) are respectively fixed with the mounting seats 1 (7) and 2 (8) as well as the mounting seats 3 (9) and 4 (10) by bolts.

3. The end mold device of a prefabricated highway small box beam with variable side angle according to claim 1 is characterized in that: The lead screw transmission assembly also includes an electric motor (17) mounted in the bracket (15) via a fixing frame, the driving end of the electric motor (17) being converted into two output ends through a reduction reversing box, each output end being connected to a steering linear drive housing (31), a fixing seat (25) being provided on one side of the steering linear drive housing (31) and being fixedly mounted on the inner wall surface of the bracket (15), one end of the lead screw (16) passing through the steering linear drive housing (31) being provided with a worm wheel on the outer thread sleeve, a worm connected to the output end being installed in the steering linear drive housing (31), and the worm wheel being meshed with the worm wheel.

4. The end mold device of a prefabricated highway small box beam with variable side angle according to claim 1 is characterized in that: Telescopic rods (28) are arranged in the inner cavity of the vacant cavity (26) and on both sides of the electric push rod (27), and the extended ends of the telescopic rods (28) are fixed to the bottom surface of the support seat (29).

5. The end mold device of a prefabricated highway small box beam with variable side angle according to claim 4 is characterized in that: A pull-out box 1 (12) and a pull-out box 2 (13) are respectively fitted on the inner wall surfaces of the bottom of the web template 1 (1) and the web template 2 (2); a connecting vertical plate (14) is installed between the pull-out box 1 (12) and the pull-out box 2 (13); two strip-shaped mounting holes 2 (22) are provided on the surfaces of the pull-out box 1 (12) and the pull-out box 2 (13); the pull-out box 1 (12) and the pull-out box 2 (13) are both fixed to the connecting vertical plate (14) by bolts.

6. The end mold device of a prefabricated highway small box beam with variable side angle according to claim 5, characterized in that: The method for using the end mold device comprises the following steps: Step 1: Place the outer surfaces of the web template 1 (1) and the web template 2 (2) that have been connected together on the bottom roller (30) in the calibration lifting assembly so that they fit with the surface of the side roller (20), and then the infrared laser (21) on the bracket (15) emits an infrared laser toward the upper end of the box beam (19), and the infrared beam shines along the inner side surfaces of the web template 1 (1) and the web template 2 (2) toward the end of the box beam (19). After comparison, the electric push rod (27) is controlled to move, and the installation parts of the web template 1 (1) and the web template 2 (2) are lifted to a height consistent with the fitting part of the irradiated end of the box beam (19) through the upward movement of the electric push rod (27); Step 2: After the web template 1 (1) and the web template 2 (2) are aligned with the fitting parts of the end of the box beam (19), the two lead screws (16) and the limit rods (24) in the brackets (15) on both sides are fixed to the mounting end faces of the web template 1 (1) and the web template 2 (2) respectively, and the two lead screws (16) push the web template 1 (1) and the web template 2 (2) to move toward the end face of the box beam (19); Step 3: The web template 1 (1) and the web template 2 (2) are both close to the end of the box beam (19) and aligned with the fitting part of the end of the box beam (19). The web template 2 (2) makes a linear longitudinal movement, and the mounting seat 3 (9) moves along with the web template 2 (2). The end of the mounting seat 3 (9) rotates with the rotating template 4 (6) and drives the connecting cross plate (11) and the rotating template 3 (5) to move together. At this time, one end of the rotating template 3 (5) rotates with the mounting seat 2 (8); the web template 1 (1) makes a linear longitudinal movement, and the mounting seat 2 (8) moves along with the web template 1 (1). The end of the mounting seat 2 (8) rotates with the rotating template 3 (5) and drives the connecting cross plate (11) and the rotating template 4 (6) to move together. At this time, one end of the rotating template 4 (6) rotates with the mounting seat 3 (9) to adapt to the casting of box beams (19) with different end angles.

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