Movable inverted arch template structure

Abstract

A movable inverted arch formwork structure comprises a bottom formwork laid at the bottom of a tunnel; the side dies are rotationally connected to the two sides of the bottom die, and rails are detachably connected to the tops of the side dies; the advancing mechanism is slidably connected to the track; the lifting mechanism is fixedly connected to the advancing mechanism and detachably connected to the bottom die; and the folding mechanism is arranged on the side wall of the lifting mechanism and detachably connected to the side mold. By means of the mode that the side formworks can be folded inwards, the front formwork can be moved to the rear without turning the formworks, the formworks cannot rotate in the moving process, the moving route is fixed, the situation that hoisting equipment is damaged and workers are collided due to rotation of the formworks is avoided, and construction safety is improved.

Description

Technical Field

[0001] This utility model relates to the field of inverted arch construction technology, and more specifically, to a movable inverted arch formwork structure. Background Technology

[0002] Due to geological conditions, tunnels are often constructed in areas with poor geological conditions. In order to meet the requirements of foundation bearing capacity and overall tunnel annular stress, it is often necessary to design an invert arch. During the construction of the invert arch, the formwork needs to be moved to carry out construction section by section.

[0003] Patent CN111188633B discloses a rapid construction method for secondary lining of small-section tunnels. It uses a self-propelled gantry crane to lift the formwork of the already constructed area, and rotates it so that the formwork can pass through the gantry crane and move to the place where it needs to be laid.

[0004] However, during the process of moving the formwork, the formwork may slide and rotate, which may easily injure the gantry crane components or the operators, affecting construction safety. Utility Model Content

[0005] To overcome the shortcomings mentioned above, this utility model aims to provide a movable arch formwork structure that can fold the formwork and move the arch formwork without it wobbling.

[0006] A movable arch formwork structure includes: a bottom formwork laid at the bottom of a tunnel; side formworks rotatably connected to both sides of the bottom formwork, with a track detachably connected to the top of the side formworks; a traveling mechanism slidably connected to the track; a lifting mechanism fixed to the traveling mechanism, the lifting mechanism being detachably connected to the bottom formwork; and a folding mechanism disposed on the side wall of the lifting mechanism, the folding mechanism being detachably connected to the side formworks.

[0007] Furthermore, a pivot is provided at the top of the bottom mold sidewall, and the pivot is rotatably connected to the side mold.

[0008] Furthermore, the traveling mechanism includes two rollers, a motor housing, a counterweight box, and a first connecting rod. The rollers move on the track and are provided with protective shells. The motor housing connects the two protective shells. The traveling motor inside the motor housing provides power to the rollers. The counterweight box is fixed to the top of the motor housing.

[0009] Furthermore, the first connecting rod is L-shaped and is located on the top of the protective shell.

[0010] Furthermore, the lifting mechanism includes a second connecting rod, a first hydraulic rod, and a track rod. The second connecting rod is fixed to the bottom of the first connecting rod, the first hydraulic rod is fixed to the bottom of the second connecting rod, and the track rod is fixed to the bottom of the first hydraulic rod.

[0011] Furthermore, the second connecting rod is horizontal with the tunnel extension direction.

[0012] Furthermore, a threaded rod is rotatably connected inside the track rod, and a drive motor is rotatably connected to the side wall of the threaded rod, with the drive motor located on the side wall of the track rod.

[0013] Furthermore, the folding mechanism includes a sliding block, a third connecting rod, and a second hydraulic rod. The sliding block is screwed to the threaded rod, the third connecting rod is rotatably connected to the bottom of the sliding block, and the second hydraulic rod is rotatably connected to the side wall of the sliding block.

[0014] Furthermore, a first connecting seat is fixedly connected to the top of the bottom mold, and the bottom of the third connecting rod is detachably connected to the first connecting seat via a first pin.

[0015] Furthermore, a second connecting seat is fixedly connected to the side wall of the side mold, and the telescopic end of the second hydraulic rod is detachably connected to the second connecting seat via a second pin.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] ① By folding the side formwork inward, the front formwork can be moved to the rear without turning the formwork. The formwork will not rotate during the movement, and the movement route is fixed, which avoids damage to the hoisting equipment and collisions with workers caused by the rotation of the formwork, thus improving the safety of construction. Attached Figure Description

[0018] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0019] Figure 1 This is a schematic diagram of the overall structure of a movable inverted arch formwork structure.

[0020] Figure 2 This is a schematic diagram of a movable arch formwork structure in a moving state.

[0021] Figure 3 This is a cross-sectional view of the track rod in a movable arch formwork structure.

[0022] Figure 4 yes Figure 1 Enlarged view of point A in the middle.

[0023] Figure 5 yes Figure 1 Enlarged view of point B in the middle.

[0024] In the diagram: 1. Bottom mold; 11. First connecting seat; 2. Side mold; 21. Track; 22. Second connecting seat; 3. Traveling mechanism; 31. Roller; 311. Protective shell; 32. Motor box; 33. Counterweight box; 34. First connecting rod; 4. Lifting mechanism; 41. Second connecting rod; 42. First hydraulic rod; 43. Track rod; 431. Threaded rod; 432. Drive motor; 5. Folding mechanism; 51. Sliding block; 52. Third connecting rod; 53. Second hydraulic rod; 6. Rotating shaft; 7. First pin; 8. Second pin. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] like Figure 1 , 2 As shown, a movable arch formwork structure includes: a bottom formwork 1 laid at the bottom of the tunnel; side formwork 2 rotatably connected to both sides of the bottom formwork 1, with a track 21 detachably connected to the top of the side formwork 2; a traveling mechanism 3 slidably connected to the track 21; a lifting mechanism 4 fixed to the traveling mechanism 3, which is detachably connected to the bottom formwork 1; and a folding mechanism 5 provided on the side wall of the lifting mechanism 4, which is detachably connected to the side formwork 2.

[0027] The bottom formwork 1 is laid on the bottom surface of the invert arch, and the side formwork 2 is laid on the side wall of the invert arch. After several bottom formwork 1 and side formwork 2 are laid, concrete is poured to form a concrete invert arch. The top of the side wall of the bottom formwork 1 is equipped with a rotating shaft 6, which is rotatably connected to the side formwork 2. The side formwork 2 on both sides can rotate towards the bottom formwork 1. After the side formwork 2 rotates inward, the overall volume becomes smaller, which facilitates the movement of the bottom formwork 1 and the side formwork 2. After the side formwork 2 is unfolded, there is no gap between the side formwork 2 and the side wall of the bottom formwork 1, and the concrete will not enter the joint.

[0028] The traveling mechanism 3 includes two rollers 31, a motor housing 32, a counterweight box 33, and a first connecting rod 34. The rollers 31 move on the track 21, which is bolted to the top of the side mold 2. When the mold needs to be moved, the track 21 is installed on the side mold 2 according to the moving route. The rollers 31 are equipped with protective shells 311, and the rollers 31 rotate relative to the protective shells 311. The motor housing 32 connects the two protective shells 311, thereby connecting the two rollers 31 into a whole. The traveling motor in the motor housing 32 provides power to the rollers 31. The counterweight box 33 and the motor housing 32 are both located on the side close to the tunnel. When the traveling motor starts, the rollers 31 rotate, driving the traveling mechanism 3 to move along the track 21. The counterweight box 33 is fixed to the top of the motor housing 32. The counterweight box 33 contains counterweight blocks and prevents the bottom mold 1 and the side mold 2 from tipping over during hoisting.

[0029] The first connecting rod 34 is L-shaped and is located on the top of the protective shell 311. The first connecting rod 34 faces the middle of the tunnel and its front end is located above the bottom mold 1. The first connecting rod 34 is used to connect the lifting mechanism 4.

[0030] The lifting mechanism 4 includes a second connecting rod 41, a first hydraulic rod 42, and a track rod 43. The second connecting rod 41 is fixed to the bottom of the first connecting rod 34. The second connecting rod 41 is horizontal to the tunnel extension direction and perpendicular to the first connecting rod 34. The first hydraulic rod 42 is fixed to both ends of the bottom of the second connecting rod 41. The track rod 43 is fixed to the bottom of the first hydraulic rod 42 and is located below the second connecting rod 41. When the first hydraulic rod 42 extends or retracts, it drives the track rod 43 to rise or fall, which in turn drives the folding mechanism 5 to rise or fall.

[0031] like Figure 3 As shown, the length of the track rod 43 is greater than the length of the side mold 2 and the bottom mold 1. A threaded rod 431 is rotatably connected inside the track rod 43. A drive motor 432 is rotatably connected to the side wall of the threaded rod 431. The drive motor 432 is located on the side wall of the track rod 43. After the drive motor 432 is started, it drives the threaded rod 431 to rotate. A folding mechanism 5 is connected to the threaded rod 431.

[0032] The folding mechanism 5 includes a sliding block 51, a third connecting rod 52, and a second hydraulic rod 53. The sliding block 51 is screwed to the threaded rod 431. When the threaded rod 431 rotates, the sliding block 51 moves along the track rod 43. The third connecting rod 52 is rotatably connected to the bottom of the sliding block 51, and the second hydraulic rod 53 is rotatably connected to the side wall of the sliding block 51.

[0033] like Figure 4As shown, a first connecting seat 11 is fixedly connected to the top of the bottom mold 1. When the third connecting rod 52 is vertical, the bottom of the third connecting rod 52 can enter the first connecting seat 11. At this time, the first pin 7 can be screwed into the first connecting seat 11 and the third connecting rod 52. The side wall of the first pin 7 is provided with threads, the first connecting seat 11 is provided with threaded holes, and the bottom of the third connecting rod 52 is also provided with through holes. The first pin 7 can pass through the first connecting seat 11 and the third connecting rod 52.

[0034] like Figure 5 As shown, a second connecting seat 22 is fixedly connected to the side wall of the side mold 2. The first connecting seat 11 and the second connecting seat 22 are in the same vertical plane. The telescopic end of the second hydraulic rod 53 can extend into the second connecting seat 22. The second hydraulic rod 53 and the second connecting seat 22 are connected by a second pin 8. The second pin 8 can be disassembled. The telescopic end of the second hydraulic rod 53 can also rotate around the second pin 8 as the axis.

[0035] How to use this embodiment:

[0036] When it is necessary to move a set of bottom mold 1 and side mold 2 to the next construction section, move roller 31 to the track 21 on the adjacent side mold 2, then connect the third connecting rod 52 and the first connecting seat 11, and also connect the second hydraulic rod 53 and the second connecting seat 22. After connection, retract the first hydraulic rod 42 to lift the bottom mold 1 and side mold 2 upwards, then retract the second hydraulic rod 53 to fold the two side molds 2 inwards. Then move roller 31 to the side where the new template is to be laid. During this period, start the drive motor 432 to move the bottom mold 1 and side mold 2 to the other end of the track rod 43. When the bottom mold 1 and side mold 2 are in the right position, unfold and push the second hydraulic rod 53 to unfold the side mold 2, push the first hydraulic rod 42 to lower the bottom mold 1 to the predetermined position, and then remove the first pin 7 and the second pin 8.

[0037] By folding the side formwork 2 inward, the front formwork can be moved to the rear without turning the formwork. The formwork will not rotate during the movement, and the movement route is fixed, which avoids damage to the hoisting equipment and collisions with workers caused by the rotation of the formwork, thus improving the safety of construction.

[0038] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A movable invert formwork structure, characterized in that: include: A bottom formwork (1) laid on the bottom of the tunnel; The side molds (2) are rotatably connected to the two sides of the bottom mold (1), and the top of the side mold (2) is detachably connected to a track (21); A travel mechanism (3) slidably connected to the track (21); A lifting mechanism (4) fixedly connected to the traveling mechanism (3), wherein the lifting mechanism (4) is detachably connected to the bottom mold (1); A folding mechanism (5) is arranged on the side wall of the lifting mechanism (4), and the folding mechanism (5) is detachably connected to the side mold (2).

2. A movable invert formwork structure according to claim 1, characterized in that: A rotating shaft (6) is provided at the top of the side wall of the bottom mold (1), and the rotating shaft (6) is rotatably connected to the side mold (2).

3. The movable invert formwork structure according to claim 2, characterized in that: The travel mechanism (3) comprises two rollers (31), a motor box (32), a counterweight box (33) and a first connecting rod (34); the roller (31) moves on the track (21); a protective shell (311) is provided on the roller (31); the motor box (32) connects the two protective shells (311); the travel motor in the motor box (32) provides power for the roller (31); and the counterweight box (33) is fixed to the top of the motor box (32).

4. The movable inverted arch formwork structure according to claim 3, characterized in that: The first connecting rod (34) is L-shaped, and the first connecting rod (34) is arranged on the top of the protective shell (311).

5. The movable inverted arch formwork structure according to claim 4, characterized in that: The lifting mechanism (4) comprises a second connecting rod (41), a first hydraulic rod (42) and a track rod (43); the second connecting rod (41) is fixedly connected to the bottom of the first connecting rod (34); the first hydraulic rod (42) is fixedly connected to the bottom of the second connecting rod (41); and the track rod (43) is fixedly connected to the bottom of the first hydraulic rod (42).

6. The movable invert formwork structure according to claim 5, characterized in that: The second connecting rod (41) is parallel to the tunnel extension direction.

7. The movable invert formwork structure according to claim 6, characterized in that: The track rod (43) is rotatably connected to a threaded rod (431) inside, and a side wall of the threaded rod (431) is rotatably connected to a drive motor (432), and the drive motor (432) is arranged on the side wall of the track rod (43).

8. The movable invert formwork structure according to claim 7, characterized in that: The folding mechanism (5) comprises a sliding block (51), a third connecting rod (52) and a second hydraulic rod (53); the sliding block (51) is screwed to the threaded rod (431); the third connecting rod (52) is rotatably connected to the bottom of the sliding block (51); and the second hydraulic rod (53) is rotatably connected to the side wall of the sliding block (51).

9. The movable invert formwork structure according to claim 8, characterized in that: The top of the bottom mold (1) is fixedly connected to a first connecting seat (11), and the bottom of the third connecting rod (52) is detachably connected to the first connecting seat (11) via a first pin shaft (7).

10. The movable invert formwork structure according to claim 9, characterized in that: The side wall of the side mold (2) is fixedly connected with a second connecting seat (22), and the telescopic end of the second hydraulic rod (53) is detachably connected to the second connecting seat (22) via a second pin shaft (8).

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