Formwork component for cast-in-place construction of cover plates of drainage blind ditches on two sides of tunnel

Abstract

The utility model discloses a template component for cast-in-place construction of cover plates of drainage blind ditches on two sides of a tunnel, which comprises a mold for cast-in-place of the cover plates, the mold comprises a bottom mold, and a support rod or a hanging rod is arranged on the bottom mold; the supporting rod penetrates through the bottom die and is in threaded connection with the bottom die, the upper end of the supporting rod is located above the die, and the lower end is arranged at the ditch bottom of the drainage blind ditch. The hanging rod is in threaded connection with the bottom die, the upper end of the hanging rod is located above the die, and the upper end of the hanging rod is rotatably hung on a fixed part; the template component realizes the removal of the bottom die after the cover plates of the drainage blind ditches on the two sides of the tunnel are poured by adopting a cast-in-place process.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel engineering, in particular to a template component for cast-in-place construction of drainage ditch covers on both sides of a tunnel. Background Art

[0002] The drainage culverts on both sides of the tunnel are usually prefabricated due to their small cross-sectional dimensions (generally designed to be 45×60cm and 60×45cm). However, due to the deviation in the flatness of the top surface of the ditch binding casting and the construction deviation of the prefabricated thickness of the cover plate, the cover plate needs to be leveled with mortar during installation. Due to the mortar strength and the problem of the emptying of the padding part, the heavy vehicle rolling during the passage can easily cause the cover plate to sink and deform. Therefore, the drainage culvert covers on both sides of the tunnel can be cast using the cast-in-place process to overcome the above problems. However, if the cast-in-place process is used, due to the small cross-sectional dimensions of the ditch body, the removal of the bottom formwork of the cover plate poses a technical difficulty. Therefore, the teams use steel bars to cross the ditch board, and use wooden formwork as the bottom formwork. After the concrete is poured, the wooden board cannot be removed. If the steel bars are corroded and the wooden board rots, it will fall into the ditch and block the water flow, making it difficult to clear. In addition, the trapezoidal ditch board design of the sewage ditch on the outside of the cover plate increases the difficulty of construction. If the trapezoidal ditch board is formed by secondary molding, it is easy to pollute the formed components and is labor-consuming and time-consuming. Utility Model Content

[0003] In view of this, the purpose of the utility model is to provide a formwork component for cast-in-place construction of drainage ditch covers on both sides of the tunnel, so as to at least solve the technical problem of removing the bottom formwork of the drainage ditch covers on both sides of the tunnel cast in-place.

[0004] The purpose of this utility model is achieved through the following technical solutions:

[0005] A formwork component for cast-in-place construction of drainage ditch cover plates on both sides of a tunnel, comprising a cast-in-place mold for the cover plate, the mold comprising a bottom mold, and a support rod or a hanging rod is provided on the bottom mold;

[0006] The support rod passes through the bottom mold and is threadedly connected to the bottom mold, the upper end of the support rod is located above the mold, and the lower end is placed on the bottom of the drainage ditch;

[0007] The hanging rod is threadedly connected to the bottom mold, the upper end of the hanging rod is located above the mold, and the upper end of the hanging rod is rotatably suspended on a fixed component.

[0008] Furthermore, the upper end of the support rod is rotatably suspended on a fixed component.

[0009] Furthermore, the bottom mold is connected to a lower bracket, and a lower movable roller is provided under the lower bracket.

[0010] Furthermore, in the width direction of the drainage ditch, the bottom template includes a middle template and edge templates on both sides of the middle template, and the edge template is connected to the middle template by a connecting piece that can enable the edge template to flip upward relative to the middle template.

[0011] Furthermore, guide wheels that can roll on the walls of the drainage ditch are respectively provided on both sides of the lower bracket, and there is a gap between the guide wheels on both sides of the lower bracket and the walls on both sides of the drainage ditch. The guide wheels on both sides of the lower bracket protrude beyond the width of the edge templates on both sides of the bottom mold after being folded upward.

[0012] Furthermore, an elastic strip is provided on a side of the edge template away from the middle template.

[0013] Furthermore, it also includes an upper bracket, which spans the drainage ditch and has two sides respectively located on the roadbed base and in the cable trench, and upper movable rollers are respectively connected to the lower parts of the two sides of the upper bracket, and the upper movable rollers on both sides of the upper bracket respectively move on the roadbed base and the bottom of the cable trench; the mold also includes a side mold, which is connected to the side of the upper bracket above the roadbed base facing the drainage ditch and partially overlaps with the drainage ditch wall in the horizontal direction; an upper bracket fastening rod is vertically connected to the side of the upper bracket located in the cable trench, the upper bracket fastening rod passes through the side of the upper bracket located in the cable trench and is threadedly connected thereto, and one end of the upper bracket fastening rod is against the inner wall of the cable trench.

[0014] Furthermore, the upper bracket includes a cross bar arranged above the side of the cable trench close to the drainage ditch, and an upper bracket height adjustment rod is provided on the cross bar. The upper bracket height adjustment rod passes through the cross bar and is threadedly connected to the cross bar. The lower end of the upper bracket height adjustment rod rests on the side of the cable trench close to the drainage ditch.

[0015] Furthermore, the mold also includes a groove side casting template for the sewage ditch, which is connected to the upper bracket through a connecting structure, and the groove side casting template for the sewage ditch is composed of a first template and a second template in the width direction of the drainage ditch, and a groove side casting cavity for the sewage ditch is formed between the first template and the second template; the second template is located on the side of the groove side casting cavity of the sewage ditch facing the cable trench, and the connecting structure includes a first connecting rod and a second connecting rod, one end of the first connecting rod is connected to the middle of the top surface of the second template, and the other end is hingedly connected to the part of the upper bracket close to the drainage ditch, one end of the second connecting rod is hingedly connected to the end of the first connecting rod close to the second template, and the other end is hingedly connected to the part of the upper bracket away from the drainage ditch, and the second connecting rod is a telescopic rod with adjustable length.

[0016] Furthermore, the lower parts of both sides of the upper bracket are connected to movable rollers through lifting structures.

[0017] The beneficial effects of the utility model are:

[0018] The utility model discloses a formwork component for cast-in-place construction of drainage ditch cover plates on both sides of a tunnel. When the cover plates are cast-in-place, the lower end of the support rod is placed on the bottom of the drainage ditch, and the support rod supports the bottom mold so that the top surface of the bottom mold is flush with the top surface of the ditch bank of the drainage ditch. When the bottom mold is removed, the support rod is rotated in situ. Due to the obstruction of the drainage ditch, the bottom mold cannot be rotated and can only move downward, so that the bottom mold is removed. After the bottom mold is removed, the support rod is rotated out, and the bottom mold is pulled to the next station for casting the cover plates by the end portion. Alternatively, when the cover plates are cast-in-place, the upper end of the hanging rod is hung on a fixed component, and the hanging rod hangs the bottom mold so that the top surface of the bottom mold is flush with the top surface of the ditch bank of the drainage ditch. When the bottom mold is removed, the hanging rod is rotated in situ. Due to the obstruction of the drainage ditch, the bottom mold cannot be rotated and can only move downward, so that the bottom mold is removed. After the bottom mold is removed, the hanging rod is rotated out, and the bottom mold is pulled to the next station for casting the cover plates by the end portion.

[0019] This formwork component enables the removal of the bottom formwork after the drainage ditch covers on both sides of the tunnel are cast using the cast-in-place process.

[0020] The lower end of the support rod is placed on the bottom of the drainage ditch, and the upper end is suspended on the fixed component, so the bearing capacity is better.

[0021] The bottom mold is connected to a lower bracket provided with a lower moving roller, and the bottom mold is pulled by the end of the bottom mold to save effort.

[0022] When the bottom mold includes a middle mold and edge molds on both sides of the middle mold, during the process of the bottom mold moving downward, due to the friction resistance on both sides of the drainage ditch, the two edge molds flip upward relative to the middle mold, and it is more labor-saving to pull the bottom mold by the end of the bottom mold.

[0023] The guide wheels arranged on both sides of the lower bracket make it possible to pull the bottom mold smoothly from the end of the bottom mold.

[0024] The elastic strips are used to adapt to the deviation of the construction width of the drainage ditch and the curved section of the drainage ditch.

[0025] The side mold of the mold is connected to an upper bracket provided with an upper moving roller, which makes it easier to move the side mold to the next station for pouring the cover plate. The upper bracket is fixed by an upper bracket fastening rod, thereby fixing the side mold of the mold, making it easier to install the mold.

[0026] The upper bracket height adjustment rod is used to adjust the height of the upper bracket to achieve height adjustment of the trench side casting template and the side template of the sewage trench of the mold.

[0027] The trench side casting template of the sewage trench is composed of a first template and a second template, and the trench side of the sewage trench can be directly cast between the first template and the second template.

[0028] The second template is connected to the upper bracket through the first connecting rod and the second connecting rod. The length of the second connecting rod is adjustable to facilitate the removal of the second template.

[0029] Other advantages, objectives and features of the present invention will be described in the following description to some extent, and will be apparent to those skilled in the art based on the following examination and research, or can be taught from the practice of the present invention to some extent. The objectives and other advantages of the present invention can be realized and obtained through the following description and claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be further described in detail below with reference to the accompanying drawings, in which:

[0031] Figure 1 This is a three-dimensional diagram of the first embodiment of the present utility model.

[0032] Figure 2 This is a three-dimensional diagram from another perspective of the first embodiment of the present invention.

[0033] Figure 3 This is an end view of an embodiment of the present utility model.

[0034] Figure 4 This is a cross-sectional view of an embodiment of the present utility model.

[0035] Figure 5 This is a cross-sectional view of the second embodiment of the present utility model.

[0036] In the figure: side form 2, bottom form 3, first formwork 4, second formwork 5, drainage ditch 6, ditch side of sewage ditch 7, cable ditch 8, middle formwork 9, edge formwork 10, waterproof board 11, elastic rubber strip 12, cover plate 13, upper bracket 14, lower bracket 15, first connecting rod 16, screw 17, lower moving roller 18, guide wheel 19, roadbed base 20, upper moving roller 21, tightening screw 22, door-type bracket 23, moving roller mounting bracket 24, upper moving roller adjusting screw 25, upper bracket fixing screw 26, cross beam 27, vertical beam 28, second connecting rod 29, cross bar 31, upper bracket height adjustment screw 32. DETAILED DESCRIPTION

[0037] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the preferred embodiments are only for illustrating the present invention, rather than for limiting the protection scope of the present invention.

[0038] Embodiment 1

[0039] like Figure 1-4As shown, a formwork component for cast-in-place construction of drainage ditch cover plates on both sides of a tunnel includes a 6-meter-long mold for casting the cover plate 13. The mold consists of a sewage ditch side casting template, a side mold 2, a bottom mold 3, a first end face template, and a second end face template. The sewage ditch side casting template is composed of a first template 4 and a second template 5 in the width direction of the drainage ditch 6. The first template 4 and the second template 5 are inclined on the opposite sides and the upper part is close to the lower part and far away from the lower part. The first template 4 and the second template 5 form a trapezoidal sewage ditch side 7 casting cavity between the opposite sides. The second template 5 is a right-angled trapezoid on the cross section of the drainage ditch 6, and its right-angled side is against the cable ditch 8 side, and the other right-angled side is located at the lower side. The side mold 2 is located above the roadbed base 20 and its lower part overlaps with the drainage ditch 6 side. In the width direction of the drainage ditch 6, the bottom mold 3 includes a middle mold 9 and edge molds 10 on both sides of the middle mold 9. The edge mold 10 and the middle mold 9 are connected by a plurality of spring hinges evenly spaced along the length direction of the drainage ditch 6 to enable the edge mold 10 to flip upward relative to the middle mold 9. Of course, the spring hinge can be replaced by other connecting parts with similar functions. For example, the edge mold 10 and the middle mold 9 are hinged by a hinge axis, and the lower part of the middle mold 9 extends toward the edge mold 10 and overlaps with part of the edge mold 10. In the process of the bottom mold 3 moving downward, due to the friction resistance on both sides of the drainage ditch 6, the two edge molds 10 flip upward relative to the middle mold 9. It is more labor-saving to pull the bottom mold 3 by the end of the bottom mold 3. When installing the mold, press down the edge molds 10 on both sides to make their top surfaces flush with the top surface of the middle mold 9. An elastic rubber strip 12 is provided on the side of the edge template 10 away from the middle template 9 to adapt to the deviation of the construction width of the drainage ditch 6 and the curved section of the drainage ditch 6 (when the drainage ditch 6 is 400mm wide, it is divided into 20mm elastic rubber strip + 60mm edge template + 260mm middle template + 60mm edge template + 20mm elastic rubber strip in sequence). A waterproof board 11 can be provided on the bottom template 3. When installing the mold, the two sides of the waterproof board 11 are folded down and wedged between the wall of the drainage ditch 6 and the elastic rubber strip 12 to prevent leakage. The first end face template and the second end face template are required for the first station of the cover plate 13 casting. The station behind the cover plate 13 casting only needs the first end face template. The groove side casting template and the side template 2 of the sewage ditch and the first template 4 and the second template 5 of the groove side casting template of the sewage ditch are concrete casting ports.

[0040] The middle template 9 of the bottom mold 3 is fixed on the top surface of the lower bracket 15, and the lower bracket 15 is a rectangular frame structure. The lower bracket 15 includes four longitudinal beams arranged in a rectangular shape on the cross section of the drainage ditch 6. The two end positions of the four longitudinal beams, the positions 1 meter away from the ends of the two ends, and the two adjacent longitudinal beams in the middle are connected by connecting rods. The two ends of the four longitudinal beams are located 1 meter away from the end heads, and the middle bottom surfaces of the two horizontal connecting rods are respectively welded with ∮25mm fine-rolled threaded nuts. The holes corresponding to the nuts at both ends of the middle template 9 are provided with ∮25mm through holes. Two ∮25mm fine-rolled threaded screw rods 17 respectively penetrate the through holes at both ends of the middle template 9 and are respectively threadedly connected to the nuts corresponding to the two through holes. The two screw rods 17 can be support rods of other structures, such as a support rod with external threads only in the lower section. The upper ends of the two screw rods 17 are both located above the mold, and the lower ends are both placed on the bottom of the drainage ditch 6. The two screw rods 17 support the bottom mold 3. Of course, the screw rods 17 can also be one or more than two. The two screw rods 17 are rotated in their original positions. Due to the obstruction of the drainage ditch 6, the bottom mold 3 cannot be rotated and can only move downward, thereby realizing the removal of the bottom mold 3. The two screw rods 17 are completely unscrewed from the mold, and the bottom mold 3 can be pulled by the end of the bottom mold 3 to the next station for pouring the cover plate 13. Lower moving rollers 18 are respectively provided on both sides of the lower ends of the lower bracket 15 at a position 1 meter away from the end, so that the bottom mold 3 can be pulled by the end of the bottom mold 3 to save effort. Guide wheels 19 are respectively provided on both sides of the two ends of the lower bracket 15. There is a gap between the guide wheels 19 on both sides of the lower bracket 15 and the walls of the drainage ditch 6 on both sides. The guide wheels 19 on both sides of the lower bracket 15 protrude beyond the width of the edge templates 10 on both sides of the bottom mold 3 after being folded upward. After demolding, the edge templates 10 on both sides of the bottom mold 3 are turned upward relative to the middle template 9. When the bottom mold 3 is pulled by the end of the bottom mold 3 to the next station for pouring the cover plate 13, if the lower bracket 15 is offset, the guide wheels 19 on one side of the lower bracket 15 will move on the side wall of the drainage ditch 6, so that the bottom mold 3 can be pulled by the end of the bottom mold 3 more smoothly, and the lower bracket 15 is prevented from being blocked by the side of the drainage ditch 6.

[0041] The trench side casting template and the side template 2 of the sewage trench are connected to the upper bracket 14. The first end template can be connected to the upper bracket 14 or temporarily installed. The upper bracket 14 includes two longitudinal beams respectively located above the roadbed base 20 and above the cable trench 8. The two ends of the two longitudinal beams are connected by oblique rods at a distance of 1.05 meters from the end. The two oblique rods are connected to the longitudinal beams above the cable trench 8. The lower ends of the two vertical rods are tubular with bottom openings. The lower ends of the two vertical rods are respectively connected with supporting legs with upper movable rollers 21. The lower ends of the two vertical rods are respectively provided with two threaded holes at intervals along the height direction. Tightening screws 22 are provided in the threaded holes. Loosening the two tightening screws 22 on the vertical rods can make the supporting legs slide relative to the vertical rods, thereby achieving adjustable spacing between the upper movable rollers 21 and the longitudinal beam. The upper movable rollers 21 on the two vertical rods move on the bottom of the cable trench 8. Of course, the upper movable rollers 21 here can also be connected to the vertical rods through other lifting structures. The connection position of the two oblique rods with the longitudinal beam above the roadbed base 20 is respectively connected to a door-shaped bracket 23 on one side of the longitudinal beam away from the drainage ditch 6. The door-shaped bracket 23 is arranged along the width direction of the drainage ditch 6. Of course, the two oblique rods can be directly connected to the top surface of the door-shaped bracket 23, so that the force is better. The inner sides of the door-shaped bracket 23 are respectively provided with slide grooves along their height direction. The door-shaped bracket 23 is provided with a U-shaped movable roller mounting bracket 24 with an opening facing downward. The upper movable roller 21 is installed in the U-shaped movable roller mounting bracket 24 through a rotating shaft. The two sides of the U-shaped movable roller mounting bracket 24 are respectively slidably arranged in the two slide grooves of the door-shaped bracket 23. A through hole is vertically provided in the middle of the top of the door-shaped bracket 23. Nuts are welded on the upper and lower sides of the through hole of the bracket 23, and an upper movable roller adjusting screw rod 25 passes through the through hole and is threadedly connected to the two nuts. The lower end of the upper movable roller adjusting screw rod 25 is rotatably connected to the top middle of the U-shaped movable roller mounting bracket 24. The rotatable connection method can be a bearing or a limit plate located on the upper and lower sides of the U-shaped movable roller mounting bracket 24 and vertically connected to the upper movable roller adjusting screw rod 25. The upper movable roller adjusting screw rod 25 is rotated, and the U-shaped movable roller mounting bracket 24 moves along the sliding groove of the gate-shaped bracket 23 to achieve an adjustable spacing between the upper movable roller 21 and the top surface of the gate-shaped bracket 23. Of course, the upper movable roller 21 here can also be connected to the vertical rod through other lifting structures. The upper bracket 14 is provided with an upper movable roller 21 to realize the movement along the length direction of the drainage culvert 6, and then the trench side casting template and the side mold 2 of the sewage trench of the mold are moved to reach different casting stations of the cover plate 13. The upper support can adapt to the roadbed base 20 and the cable trench 8 of different elevations by tightening the screw 22 and the upper movable roller adjusting the screw rod 25.Through holes are respectively provided on the two vertical rods, and nuts are respectively welded on both sides of the through holes of the two vertical rods. Two upper bracket fixing screw rods 26 respectively penetrate the through holes on the two vertical rods and are respectively threadedly connected to the nuts corresponding to the through holes. The other ends of the two upper bracket fixing screw rods 26 are against the side of the cable trench 8 near the drainage culvert 6. The two upper bracket fixing screw rods 26 can be upper bracket fastening rods of other structures, such as a section of upper bracket fastening rods with external threads. The upper bracket 14 is fixed by the two upper bracket fixing screw rods 26, so that the groove side casting template and the side mold 2 of the sewage trench are fixed, and the mold is convenient. The longitudinal beam connection position of the two oblique rods and the roadbed base 20 is respectively provided with a cross beam 27 on the side of the longitudinal beam facing the cable trench 8. The free end of the cross beam 27 is vertically connected to the vertical beam 28, and the free end of the vertical beam 28 is connected to the oblique rod. The top surface of the first template 4 of the groove side casting template of the sewage trench is fixed on the two vertical beams 28, and the side mold 2 is fixed on the side of the door-shaped bracket 23. The second formwork 5 of the trench wall casting formwork of the sewage ditch is provided with connecting structures corresponding to the two vertical beams 28, and the connecting structures include a first connecting rod 16 and a second connecting rod 29. One end of the first connecting rod 16 is hingedly connected to the lower end of the vertical beam 28 through a hinged seat, and the other end is fixedly connected to the middle of the top surface of the second formwork 5. The second connecting rod 29 is a telescopic rod with adjustable length. The specific second connecting rod 29 includes a middle threaded sleeve, and both ends of the threaded sleeve are respectively threadedly connected to the screws. The threads at both ends of the threaded sleeve are opposite, and the threads of the corresponding two screws are opposite. One end of the second connecting rod 29 is hingedly connected to the first connecting rod 16 located at one end of the second formwork 5 through a hinged seat, and the other end is hingedly connected to the connection position of the vertical beam 28 and the diagonal rod through the hinged seat. The two connecting structures limit the first formwork 4 and the second formwork 5. After the pouring is completed, the threaded sleeve is rotated, and the second connecting rod 29 is shortened to realize the removal of the second formwork 5. The two beams 27 are connected to limit blocks at opposite sides, and the two screw rods 17 pass through the two limit blocks and are connected to limit nuts. The limit nuts here can be replaced by limit members of other structures, such as limit plates, and of course, limit blocks can also be omitted. A cross bar 31 is provided on the upper bracket 14 above the side of the cable trench 8 near the drainage culvert 6. Corresponding nuts are welded on the upper and lower sides of the cross bar 31, respectively. An upper bracket height adjustment screw rod 32 is provided on the cross bar 31. The upper bracket height adjustment screw rod 32 passes through the cross bar 31 and is threadedly connected with the nuts on the upper and lower sides of the cross bar 31. The lower end of the upper bracket height adjustment screw rod 32 is against the side of the cable trench 8 near the drainage culvert 6. The upper bracket height adjustment screw rod 32 can be an upper bracket height adjustment rod of other structures, such as an upper bracket height adjustment rod with external threads only in a certain section. The upper bracket height adjustment screw rod 32 is used to adjust the height of the upper bracket 14 to achieve the height adjustment of the trench side casting template and the side mold 2 of the sewage trench of the mold. When the cover plate 13 is poured, the mold overlaps with the concrete poured in the previous station, and no second end surface template is required.

[0042] The multiple template members are softly connected, so that the cover plate 13 can be cast and formed at one time and 2-5 sections can be removed, thereby improving the casting efficiency of the cover plate 13.

[0043] The process for pouring the cover plate 13 in this embodiment is as follows:

[0044] The steel skeleton of the cover plate 13 is processed and manufactured, and is tied and formed on the tire formwork frame according to a segment of 6m - clean up the debris in the drainage ditch 6 to be constructed - put in the lower bracket 15 with the bottom mold 3, and turn the screw 17 clockwise to lift the lower bracket 15 with the bottom mold 3 until the top surface of the bottom mold 3 is flush with the ditch of the drainage ditch 6 - press down the edge templates 10 on both sides, and wedge the two sides of the waterproof board 11 between the ditch and the elastic strip 12 - apply the release agent - put on the steel cage - move the ditch side casting template with the sewage ditch and the upper bracket 14 of the side mold 2 to the corresponding position and drop it so that the screw 17 passes through the through hole on the limit block - adjust the height of the upper bracket on the cross bar 31 and adjust the screw 32 to the design elevation point of the layout - lock the cable ditch 8 Fix the screw rod 26 on the upper bracket - tighten the limiting nut on the screw rod 17 on the upper side of the cross beam 27 to lock the trench side casting formwork, the side form 2 and the bottom form 3 of the sewage trench together - pour concrete - cure - after reaching the demolding strength, loosen the limiting nut on the screw rod 17 on the upper side of the cross beam 27 - rotate the screw rod 17 in reverse in situ, and the bottom form 3 moves down - after moving down to a certain extent (out of the concrete), continue to screw the screw rod 17 upward in the reverse direction, and under the action of the self-weight of the lower bracket 15 with the bottom form 3, the lower bracket 15 with the bottom form 3 falls to the bottom of the trench as a whole - lift the upper bracket 14 with the side form 2 and the trench side casting formwork of the sewage trench to complete the formwork removal - pull one end of the lower bracket 15 with the bottom form 3 to enter the next construction station.

[0045] Embodiment 2

[0046] like Figure 5 As shown, the difference from Example 1 is that the lower end of the screw rod 17 is not placed on the bottom of the drainage ditch 6, the lower end of the screw rod 17 passes through the through hole on the bottom mold 3 and is threadedly connected to the nut corresponding to the through hole and located on the lower bracket 15, the upper end of the screw rod 17 passes through the limit block on the upper bracket 14 and is threadedly connected to the limit nut, of course, the limit block can be other fixed components on the upper bracket 14, the screw rod 17 can also be other hanging rods such as a hanging rod with an external thread at a certain section, the screw rod 17 lifts the bottom mold 3, and the two screw rods 17 are rotated in their original positions respectively. Due to the obstruction of the drainage ditch 6, the bottom mold 3 cannot rotate and can only move downward, thereby realizing the removal of the bottom mold 3.

[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution, which should be included in the scope of the claims of the utility model.

Claims

1. A formwork component for cast-in-place construction of drainage ditch cover plates on both sides of a tunnel, comprising a cast-in-place mold for the cover plate (13), the mold comprising a bottom mold (3), characterized in that: The bottom mold (3) is provided with a support rod or a hanging rod; The support rod passes through the bottom mold (3) and is threadedly connected to the bottom mold (3), the upper end of the support rod is located above the mold, and the lower end is placed on the bottom of the drainage ditch (6); The hanging rod is threadably connected to the bottom mold (3); the upper end of the hanging rod is located above the mold; the upper end of the hanging rod is rotatably suspended on a fixed component.

2. The formwork component for cast-in-place construction of drainage ditch covers on both sides of the tunnel according to claim 1, characterized in that: The upper end of the support rod is rotatably suspended on a fixing component.

3. The formwork member for cast-in-place construction of drainage ditch covers on both sides of a tunnel according to claim 1 or 2, characterized in that: The bottom mold (3) is connected to a lower bracket (15), and a lower movable roller (18) is provided under the lower bracket (15).

4. The formwork member for cast-in-place construction of drainage ditch covers on both sides of a tunnel according to claim 3, characterized in that: In the width direction of the drainage ditch (6), the bottom mold (3) comprises a middle mold (9) and edge molds (10) on both sides of the middle mold (9), and the edge mold (10) is connected to the middle mold (9) via a connecting piece that enables the edge mold (10) to flip upward relative to the middle mold (9).

5. The formwork member for cast-in-place construction of drainage ditch covers on both sides of a tunnel according to claim 4, characterized in that: Guide wheels (19) are respectively provided on both sides of the lower bracket (15) and can roll on the wall of the drainage ditch (6). There is a gap between the guide wheels (19) on both sides of the lower bracket (15) and the walls on both sides of the drainage ditch (6). The guide wheels (19) on both sides of the lower bracket (15) protrude beyond the width of the edge templates (10) on both sides of the bottom mold (3) after being folded upwards.

6. The formwork member for cast-in-place construction of drainage ditch covers on both sides of a tunnel according to claim 4, characterized in that: An elastic rubber strip (12) is provided on the side of the edge template (10) away from the middle template (9).

7. The formwork member for cast-in-place construction of drainage ditch covers on both sides of a tunnel according to claim 1 or 2, characterized in that: It also includes an upper bracket (14), the upper bracket (14) straddling the drainage ditch (6) and its two sides are respectively located on the roadbed base (20) and in the cable ditch (8), the lower parts of the two sides of the upper bracket (14) are respectively connected to upper moving rollers (21), the upper moving rollers (21) on both sides of the upper bracket (14) respectively travel on the roadbed base (20) and on the bottom of the cable ditch (8); the mold also includes a side mold (2), the side mold (2) is connected to the side of the upper bracket (14) above the roadbed base (20) facing the drainage ditch (6) and partially overlaps with the side of the drainage ditch (6) in the horizontal direction; the side of the upper bracket (14) located in the cable ditch (8) is vertically connected to an upper bracket fastening rod, the upper bracket fastening rod passes through the side of the upper bracket (14) located in the cable ditch (8) and is threadedly connected thereto, and one end of the upper bracket fastening rod abuts against the inner wall of the cable ditch (8).

8. The formwork member for cast-in-place construction of drainage ditch covers on both sides of a tunnel according to claim 7, characterized in that: The upper bracket (14) comprises a cross bar (31) arranged above the side of the cable trench (8) close to the drainage ditch (6), and an upper bracket height adjustment rod is arranged on the cross bar (31). The upper bracket height adjustment rod passes through the cross bar (31) and is threadedly connected to the cross bar (31), and the lower end of the upper bracket height adjustment rod abuts against the side of the cable trench (8) close to the drainage ditch (6).

9. The formwork member for cast-in-place construction of drainage ditch covers on both sides of a tunnel according to claim 7, characterized in that: The mold further comprises a trench side casting template for the sewage ditch, the trench side casting template for the sewage ditch being connected to the upper bracket (14) via a connecting structure, the trench side casting template for the sewage ditch being composed of a first template (4) and a second template (5) being combined in the width direction of the drainage ditch (6), a trench side (7) casting cavity for the sewage ditch being formed between the first template (4) and the second template (5); the second template (5) being located on a side of the trench side (7) casting cavity for the sewage ditch facing the cable ditch, the connecting structure comprising a first connecting rod (16) and a second connecting rod (29), one end of the first connecting rod (16) being connected to the middle of the top surface of the second template (5) and the other end being hingedly connected to a portion of the upper bracket (14) close to the drainage ditch (6), one end of the second connecting rod (29) being hingedly connected to an end of the first connecting rod (16) close to the second template (5) and the other end being hingedly connected to a portion of the upper bracket (14) away from the drainage ditch (6), the second connecting rod (29) being a telescopic rod with adjustable length.

10. The formwork member for cast-in-place construction of drainage ditch covers on both sides of a tunnel according to claim 9, characterized in that: The lower parts of both sides of the upper bracket (14) are respectively connected to the movable rollers (21) via lifting structures.

Images