Formwork trolley of cast-in-place culvert

Abstract

The utility model provides a formwork trolley of a cast-in-place culvert, which belongs to the technical field of culvert construction and comprises a truss unit and a steel formwork unit, the truss unit comprises two parallel vertical beams, a top cross beam is arranged at the tops of the two vertical beams, a plurality of reinforcing rods are arranged between the two vertical beams, an upper stabilizing frame is arranged at the top of the top cross beam, and a lower stabilizing frame is arranged at the top of the steel formwork unit. The steel formwork unit comprises a top formwork arranged on the top of the upper stabilizing frame, adjusting section formworks are hinged to the two sides of the top formwork respectively, side formworks are hinged to the other ends of the adjusting section formworks, and adjusting units are arranged between the side formworks and the vertical beams and between the adjusting formworks and the vertical beams. The problems that an existing formwork is insufficient in deformation control, procedures are tedious due to separation of the formwork and a supporting system, rapid turnover is difficult, and the continuous construction requirement of a culvert cannot be met are solved.

Description

Technical Field

[0001] This utility model relates to the field of culvert construction technology, and more specifically, to a formwork trolley for cast-in-place culverts. Background Technology

[0002] As a key structure in highway engineering, the efficiency and quality of cast-in-place construction of culverts directly affect the overall progress of the project. Currently, large culverts such as slab culverts and box culverts mostly adopt segmented cast-in-place technology, which requires repeated disassembly and reassembly of formwork and correction. This results in problems such as high labor input and long construction period. Traditional formwork systems (such as bulk steel formwork and wooden formwork) have poor integrity and are prone to bulging and bursting under the impact of concrete pouring, leading to defects such as honeycomb surface and dimensional deviation. In addition, the construction of the top slab relies on the scaffolding support system, which requires pre-compression test and high bearing capacity foundation. The erection period is long and it is difficult to move, which poses safety hazards such as scaffolding instability and collapse.

[0003] While existing technologies have attempted to move the formwork as a whole during improvements, they still suffer from insufficient deformation control. In particular, the formwork is prone to deformation under concrete lateral pressure, affecting structural accuracy. Furthermore, the separation of the formwork from the support system leads to cumbersome procedures, making rapid turnover difficult and failing to meet the requirements for continuous culvert construction. Utility Model Content

[0004] To overcome the above deficiencies, this utility model provides a formwork trolley for cast-in-place culverts, which solves the aforementioned problems.

[0005] This utility model is implemented as follows:

[0006] A formwork trolley for cast-in-place culverts includes a truss unit and a steel formwork unit. The truss unit includes two parallel vertical beams, with a top crossbeam at the top of the two vertical beams and several reinforcing bars between them. An upper stabilizing frame is provided at the top of the top crossbeam, and telescopic rollers and positioning cylinders are provided at the bottom of the vertical beams. The steel formwork unit includes a top formwork mounted on the top of the upper stabilizing frame. Adjustable section formworks are hinged to both sides of the top formwork, and a side formwork is hinged to the other end of the adjustable section formwork. An adjustment unit is provided between the side formworks and the adjustable section formworks and the vertical beams.

[0007] In an embodiment of this utility model, the telescopic roller includes a height working cylinder, a roller frame is provided at the bottom of the height working cylinder, rollers are provided inside the roller frame, there are two sets of rollers, and they are a double-wheel structure, arranged front and rear on the inner side of the roller frame near the bottom, a roller mounting part is provided on the front and rear direction of the vertical beam near the bottom, and the outer side wall of the height working cylinder is fixedly installed in the roller mounting part near the top.

[0008] In an embodiment of this utility model, a plurality of positioning operation cylinders are provided at the bottom of the vertical beam near the middle, and a support plate is provided at the end of the output shaft of the positioning operation cylinder.

[0009] In an embodiment of this utility model, the outer side of the vertical beam is provided with several connecting parts, which are arranged in three rows of linearly equal parts, namely the first connecting part, the second connecting part and the third connecting part from top to bottom.

[0010] In an embodiment of this utility model, the inner side of the side template is provided with a plurality of equal fourth connecting parts, fifth connecting parts and sixth connecting parts. The fourth connecting parts are linearly and equally distributed on the upper side of the side template, the fifth connecting parts are linearly and equally distributed on the middle side of the side template, and the sixth connecting parts are linearly and equally distributed on the bottom side of the side template.

[0011] In an embodiment of this utility model, the adjustment unit includes a plurality of first working cylinders, second working cylinders and third working cylinders. The bottom of the first working cylinder is hinged to the first connecting part, and its output end is hinged to the fourth connecting part. The bottom of the second working cylinder is hinged to the second connecting part, and its output end is hinged to the sixth connecting part. The third working cylinder is hinged to the third connecting part, and its output end is hinged to the fifth connecting part.

[0012] In an embodiment of this utility model, the adjustment unit further includes a fourth working cylinder and a fifth working cylinder. The bottom and the end of the output end of the fourth working cylinder are respectively hinged to the inner side of the top template and the adjustment section template, and close to the hinge point of the two. The bottom and the end of the output end of the fifth working cylinder are respectively hinged to the inner side of the adjustment section template and the side template, and close to the hinge point of the two.

[0013] The beneficial effects of this utility model are as follows: This solution mainly utilizes the coordinated operation of truss units and steel formwork units. The truss unit, as the supporting structure of the entire trolley, provides mobility through telescopic rollers and achieves stable support through positioning hydraulic cylinders. The steel formwork unit is installed around the truss unit and consists of a top formwork, an adjustable section formwork, and side formwork. These formworks are connected by hinges to form a formwork system that can be flexibly expanded or contracted. During construction, the height of the telescopic rollers is controlled by the hydraulic cylinders to bring the top formwork to the target height. Simultaneously, the positioning hydraulic cylinders extend from the support plate to contact the ground, ensuring the trolley remains stable and does not move. Then, through... By controlling the extension and retraction of the No. 1-5 working cylinders, the adjustment section template and side template are unfolded to the appropriate position, so that the outer contour section of the steel template unit matches the dimensions required by the culvert design. At this point, the subsequent pouring operation of this section can begin. After the culvert section is formed, the working cylinders and height working cylinders are retracted to separate the template from the culvert. The trolley is then moved to the next section position for the next round of construction via the telescopic rollers. This method achieves flexible movement and stable support of the template trolley within the culvert. At the same time, the hinged design of the steel template unit and the control of the adjustment unit enable the template to unfold and retract quickly, greatly shortening the construction cycle and improving construction efficiency. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0015] Figure 1 A structural schematic diagram of a formwork trolley for a cast-in-place culvert provided for an embodiment of this utility model;

[0016] Figure 2 A schematic diagram of the truss unit provided for an embodiment of this utility model;

[0017] Figure 3 A schematic diagram of the structure of the adjustment unit provided for an embodiment of this utility model.

[0018] In the diagram: 10. Truss unit; 11. Vertical beam; 1101. First connecting part; 1102. Second connecting part; 1103. Third connecting part; 1104. Lateral connecting part; 1105. Roller mounting part; 12. Top crossbeam; 13. Telescopic roller; 1301. Height working cylinder; 1302. Roller frame; 14. Positioning working cylinder; 15. Reinforcing rod; 20. Upper stabilizing frame; 30. Steel formwork unit; 31. Top formwork; 32. Adjustable section formwork; 33. Side formwork; 3301. Fourth connecting part; 3302. Fifth connecting part; 3303. Sixth connecting part; 40. Adjustment unit; 41. First working cylinder; 42. Second working cylinder; 43. Third working cylinder; 44. Fourth working cylinder; 45. Fifth working cylinder. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0020] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0021] like Figure 1-2As shown, this utility model provides a formwork trolley for cast-in-place culverts, including a truss unit 1010 and a steel formwork unit 30. The truss unit 10 includes two parallel vertical beams 11, with a top horizontal beam 12 at the top of the two vertical beams 11, and several reinforcing rods 15 between them. An upper stabilizing frame 20 is provided at the top of the top horizontal beam 12. Telescopic rollers 13 and positioning cylinders 14 are provided at the bottom of the vertical beams 11, allowing movement on the ground of the culvert via the telescopic rollers 13. The steel formwork unit 30 includes a formwork trolley mounted on the upper stabilizing frame. The top template 31 at the top of the 20 has adjustable section templates 32 hinged to both sides of the top template 31. The other end of the adjustable section template 32 is hinged to a side template 33. An adjustment unit 40 is set between the side template 33 and the adjustable section template and the vertical beam 11. In this scheme, the height of the steel template unit 30 is adjusted by telescopic rollers 13. The adjustment unit 40 can adjust the left and right expansion and contraction of the hinged steel template unit 30. Through the two, the functions of rapid formwork support and demolding movement are realized, and efficient culvert formwork support operation is achieved.

[0022] In this embodiment, the telescopic roller 13 includes a height operation cylinder 1301. A roller frame 1302 is provided at the bottom of the height operation cylinder 1301. Rollers are provided inside the roller frame 1302. There are two sets of rollers, which are double-wheel structures. They are arranged at the front and rear on the inner side of the roller frame 1302 near the bottom. A roller mounting part 1105 is provided on the front and rear direction of the vertical beam 11 near the bottom. The outer side wall of the height operation cylinder 1301 is fixedly installed in the roller mounting part 1105 near the top. The height of the steel template unit 30 on the template trolley can be adjusted by adjusting the height operation cylinder 1301 on the telescopic roller 13.

[0023] In this embodiment, a plurality of positioning operation cylinders 14 are provided at the bottom near the middle of the vertical beam 11, and a support plate is provided at the end of the output shaft of the positioning operation cylinder 14.

[0024] like Figure 2 As shown, the outer side of the vertical beam 11 is provided with several connecting parts. These connecting parts are arranged in three rows of linearly equal parts, which are the first connecting part 1101, the second connecting part 1102 and the third connecting part 1103 from top to bottom.

[0025] like Figure 3 As shown, the inner side of the side template 33 is provided with a number of equal fourth connecting parts 3301, fifth connecting parts 3302 and sixth connecting parts 3303. The fourth connecting parts 3301 are linearly and equally distributed on the upper side of the side template 33, the fifth connecting parts 3302 are linearly and equally distributed on the middle side of the side template 33, and the sixth connecting parts 3303 are linearly and equally distributed on the bottom side of the side template 33.

[0026] In this embodiment, the adjustment unit 40 includes a plurality of first working cylinders 41, second working cylinders 42 and third working cylinders 43. The bottom of the first working cylinder 41 is hinged to the first connecting part 1101, and its output end is hinged to the fourth connecting part 3301. The bottom of the second working cylinder 42 is hinged to the second connecting part 1102, and its output end is hinged to the sixth connecting part 3303. The third working cylinder 43 is hinged to the third connecting part 1103, and its output end is hinged to the fifth connecting part 3302.

[0027] In this embodiment, the adjustment unit 40 further includes a fourth working cylinder 44 and a fifth working cylinder 45. The bottom of the fourth working cylinder 44 and the end of its output end are respectively hinged to the inner side of the top template 31 and the adjustment section template 32, and close to the hinge point of the two. The bottom of the fifth working cylinder and the end of its output end are respectively hinged to the inner side of the adjustment section template 32 and the side template 33, and close to the hinge point of the two.

[0028] It should be noted that the hydraulic control system included in the above-mentioned hydraulic cylinders is existing technology and therefore is not shown in the figure.

[0029] In this embodiment, the front and rear sides of the vertical beam 11 are symmetrically provided with transverse connecting parts 1104. Any two template trolleys of this application are connected by connecting rods to their corresponding transverse connecting parts 1104. The length of the template trolley in this application is 2M. By standardizing the template trolley, the effect of free assembly is achieved, so that the template trolley can be freely assembled into a longer template trolley according to the construction requirements, thereby increasing construction efficiency.

[0030] Specifically, the working principle of this cast-in-place culvert formwork trolley is as follows: The formwork trolley is erected at the construction site. The height operation cylinder 1301 on the telescopic roller 13 is controlled to raise the top formwork 31 to the target height. Simultaneously, the positioning operation cylinder 14 is extended to support the ground, ensuring it does not move back and forth. At this point, operation cylinders 1-5 are controlled to unfold the adjustment section formwork 32 and side formwork 33 to the appropriate positions, ensuring the outer contour section of the steel formwork unit 30 matches the dimensions required by the culvert design. Subsequent casting operations for this section can then begin. After this section of the culvert is formed, operation cylinders 1-5 are retracted, allowing the adjustment section formwork 32 and side formwork on both sides to... The formwork 33 separates from the culvert, and then the positioning operation cylinder 14 retracts to release the fixation. The height retraction operation cylinder 1301 separates the top formwork 31 from the top of the culvert. At this time, the formwork trolley can be moved to the next section, and the positioning operation cylinder 14 is fixed to the ground support again. The telescopic roller 13 extends, and the operation cylinders 1-5 extend, so that it is unfolded to the same size as the culvert cross section. Through the above structure, the problems of insufficient deformation control of existing moving formwork, easy deformation of the wall under concrete lateral pressure, affecting the structural accuracy, and the separation of formwork from the support system leading to complicated procedures, difficulty in rapid turnover, and inability to meet the needs of continuous culvert construction are solved.

[0031] The present invention has been further described above with reference to specific embodiments. However, it should be understood that the specific description herein should not be construed as limiting the substance and scope of the present invention. Various modifications made by those skilled in the art to the above embodiments after reading this specification are all within the scope of protection of the present invention.

Claims

1. A form carriage for a cast-in-place culvert, characterized by, The utility model provides a steel formwork unit (30) and truss unit (10) are included, the truss unit (10) includes two parallelly arranged vertical girders (11), the top of two vertical girders (11) is provided with top crossbeam (12), and between two is provided with several reinforcing bars (15), the top of top crossbeam (12) is provided with upper stable frame (20), the bottom of vertical girders (11) is provided with telescopic roller (13) and positioning operation oil cylinder (14), the steel formwork unit (30) includes the top template (31) of being arranged in upper stable frame (20) top, the both sides of top template (31) are respectively hinged with adjusting section template (32), the other end of adjusting section template (32) is hinged with side template (33), and the side template (33) and adjusting section template are provided with adjusting unit (40) between vertical girders (11).

2. A form trolley for cast-in-situ culverts according to claim 1, characterised in that, The telescopic roller (13) includes height operation oil cylinder (1301), the bottom of height operation oil cylinder (1301) is provided with roller frame (1302), the roller frame (1302) is provided with roller, the roller has two groups, and is double -wheeled structure, and is arranged in the inner side of roller frame (1302) near the bottom side, and the inner side of vertical girders (11) near the bottom side is provided with roller mounting portion (1105), and the outer side wall near the top side of height operation oil cylinder (1301) is fixedly arranged in roller mounting portion (1105).

3. A form trolley for cast-in-situ culverts according to claim 1, characterised in that, The bottom near the middle of vertical girders (11) is provided with several positioning operation oil cylinders (14), and the output shaft end of positioning operation oil cylinder (14) is provided with a support plate.

4. A form trolley for cast-in-situ culverts according to claim 1, characterised in that, The outer side of vertical girders (11) is provided with several connecting portions, and the connecting portions are three rows of linearly equidivided connecting portions, which are first connecting portion (1101), second connecting portion (1102) and third connecting portion (1103) from top to bottom.

5. A form carriage for cast-in-place culverts according to claim 4, wherein, The inner side of side template (33) is provided with several fourth connecting portions (3301), fifth connecting portions (3302) and sixth connecting portions (3303) of same number, the fourth connecting portion (3301) is linearly equidivided and arranged on the upper side of side template (33), the fifth connecting portion (3302) is linearly equidivided and arranged on the middle side of side template (33), and the sixth connecting portion (3303) is linearly equidivided and arranged on the bottom side of side template (33).

6. A form carriage for cast-in-place culverts according to claim 5, wherein, The adjusting unit (40) includes several first operation oil cylinders (41), second operation oil cylinders (42) and third operation oil cylinders (43), the bottom of first operation oil cylinder (41) is hinged in first connecting portion (1101), and the output end is hinged in fourth connecting portion (3301), the bottom of second operation oil cylinder (42) is hinged in second connecting portion (1102), and the output end is hinged in sixth connecting portion (3303), and the third operation oil cylinder (43) is hinged in third connecting portion (1103), and the output end is hinged in fifth connecting portion (3302).

7. A form carriage for cast-in-place culverts according to claim 6, wherein The adjusting unit (40) further comprises a fourth working oil cylinder (44) and a fifth working oil cylinder (45), the bottom of the fourth working oil cylinder (44) and the end of its output end are respectively hinged to the inner side of the top formwork (31) and the adjusting segment formwork (32) and close to one side of the hinged position, the bottom of the fifth working oil cylinder and the end of its output end are respectively hinged to the inner side of the adjusting segment formwork (32) and the side formwork (33) and close to one side of the hinged position.

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