Self-walking spanning type arch ring formwork trolley for open cut tunnel main body structure

Abstract

The utility model discloses a self-walking spanning type arch ring formwork trolley for an open cut tunnel main body structure, which relates to the technical field of tunnel construction equipment and comprises a lower door frame, an upper door frame, a top formwork, a bottom section formwork, a middle section formwork and a top section formwork, the upper door frame is supported on the lower door frame through a trolley lifting oil cylinder, and the top section formwork is installed on the top formwork. The device is characterized in that a cylinder body of a trolley lifting oil cylinder is fixed on the upper door frame, and the free end of a piston rod is pressed on the lower door frame; the middle section die is rotationally connected with the top section die and the bottom section die; a folding and unfolding driving mechanism is mounted among the upper door frame, the middle-section mold and the bottom-section mold and is used for driving the middle-section mold and the bottom-section mold to be folded or unfolded relative to the top-section mold; and when the middle section die and the bottom section die are located at the maximum folding position, the position of the bottom section die is higher than the position before folding. By optimizing the structural design of the trolley, the construction efficiency, the space utilization rate and the structural stability are improved, meanwhile, the operation process is simplified, and the adaptability of the trolley is enhanced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a tunnel construction equipment technical field, specifically, relate to a kind of self-propelled spanning type arch ring formwork trolley for open cut tunnel main body structure. BACKGROUND

[0002] The trolley design in tunnel lining construction is a key factor affecting construction efficiency and quality, especially in open cut tunnel construction, the stability and walking performance of the trolley are crucial. The traditional full-hydraulic non-brace lining trolley is usually composed of a trolley frame, a formwork and a hydraulic power system, and the formwork is erected and dismantled by a hydraulic device, which can realize the lining of the whole cross section of the tunnel. However, in the construction process, the conversion of the foundation pit support system often becomes a key problem affecting the safety and efficiency of the construction. The traditional method requires setting up lateral supports for the foundation pit to support the tunnel structure, while the self-propelled trolley needs to walk along the length direction of the tunnel, which requires more frequent removal of the lateral supports for the foundation pit, and then reinstallation of the lateral supports for the foundation pit after walking to the designated position, resulting in unstable stress on the tunnel structure during the whole process, thereby affecting the construction quality and safety, and the operation is complicated.

[0003] Therefore, a self-propelled spanning type arch ring formwork trolley is provided, which divides the trolley portal into an upper portal and a lower portal, and installs a trolley lifting cylinder on the lower portal, with the free end of the piston rod of the trolley lifting cylinder pointing upwards and supporting the upper portal. When the trolley walks along the length direction of the tunnel, and when a trolley lifting cylinder is disturbed by the lateral support of the foundation pit, the free end of the piston rod of the trolley lifting cylinder is simply retracted below the lateral support of the foundation pit, and the trolley continues to walk. When the trolley lifting cylinder moves to the front of the lateral support of the foundation pit, the free end of the piston rod is extended and supports the upper portal again, so that the trolley can smoothly cross the lateral support of the foundation pit, avoiding the problem of unstable tunnel structure caused by the removal and installation of the lateral support of the foundation pit.

[0004] However, the above-mentioned self-propelled spanning type arch ring formwork trolley has the following defects: all trolley lifting cylinders are installed on the lower portal, which greatly occupies the lower space in the tunnel, but the lower space in the tunnel is often narrow, which greatly interferes with the layout of mechanical equipment, materials and operation range inside the tunnel; in addition, the formwork on the trolley does not have a folding function, which often limits the space when crossing the lateral support of the foundation pit, resulting in a large operation difficulty. UTILITY MODEL CONTENTS

[0005] The utility model provides a self-propelled spanning type arch ring formwork trolley for open cut tunnel main body structure, which can solve the above-mentioned problems.

[0006] In order to solve the above-mentioned problems, the technical scheme adopted by the utility model is as follows:

[0007] The utility model provides a kind of self-propelled spanning type arch ring formwork trolley for open cut tunnel main body structure, including lower section, upper section, top mould frame, bottom section mould, middle section mould and top section mould, the upper section is supported in the lower section by trolley lifting oil cylinder, the top section mould is installed in the top mould frame, it is characterized in that, the cylinder body of trolley lifting oil cylinder is fixed in upper section, and the free end of piston rod is pressed in lower section;The middle section mould is rotatably connected with the top section mould and bottom section mould;Folding unfolding drive mechanism is installed between the upper section, middle section mould and bottom section mould, for driving the middle section mould and bottom section mould fold or unfold relative to the top section mould;When the middle section mould and bottom section mould are in maximum folding position, the position where the bottom section mould is located is higher than the position before folding.

[0008] As further description of the above technical solution, the folding unfolding drive mechanism includes first adjusting oil cylinder, second adjusting oil cylinder, first support installed in the bottom section mould and second support installed in the middle section mould;Two ends of the first adjusting oil cylinder are rotatably connected with the upper section and second support respectively;Two ends of the second adjusting oil cylinder are rotatably connected with the first support and second support respectively.

[0009] As further description of the above technical solution, the upper section and second support are detachably connected with first support lead screw;The upper section and first support are detachably connected with second support lead screw.

[0010] As further description of the above technical solution, the middle section mould and bottom section mould are detachably connected with auxiliary reinforcing plate between mould.

[0011] As further description of the above technical solution, it further includes ladder stand and ladder stand folding drive oil cylinder;The upper end of the ladder stand is rotatably connected to the upper section, and the lower end is used to support in the lower section;One end of the ladder stand folding drive oil cylinder is rotatably connected to the upper section, and the other end is rotatably connected to the ladder stand.

[0012] As further description of the above technical solution, it further includes watering maintenance system, which includes maintenance water tank installed in the upper section, beam type water sprayer with nozzle upward, water pump placed in the maintenance water tank, and water delivery pipeline connecting the water outlet of the water pump with the water inlet of the beam type water sprayer;One end of the beam type water sprayer is fixedly connected to the upper section, and the part close to the other end is connected to the upper section through inclined steel wire rope, and the inclined steel wire rope is located above the beam type water sprayer.

[0013] Compared with prior art, the utility model has the beneficial effects that:

[0014] 1) By fixing the cylinder body of the trolley lifting oil cylinder to the upper door frame instead of the traditional lower door frame, the limited space of the lower part of the tunnel is effectively released, and this design avoids the problem of the trolley lifting oil cylinder occupying the space of the lower part of the tunnel, so that the mechanical equipment, material storage and operation layout of the construction personnel in the tunnel are more flexible, and the construction efficiency and space utilization are significantly improved.

[0015] 2) The rotary connection of the middle segment mold with the top segment mold and the bottom segment mold, and the setting of the folding and unfolding driving mechanism, enable the mold plate to be flexibly folded according to the height position of the lateral support of the foundation pit, and this modular design not only simplifies the operation process, but also improves the adaptability of the trolley in narrow space, and reduces the operation difficulty; through the folding and unfolding driving mechanism, the trolley can flexibly adjust the folding state of the mold plate according to different height positions of the lateral support of the foundation pit, so that the trolley can smoothly cross obstacles in different construction environments, and the adaptability and versatility of the trolley are enhanced.

[0016] In order to make the above-mentioned purposes, characteristics and advantages of the utility model more obvious and easy to understand, the following will be the embodiment of the utility model, and the detailed description is as follows. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical scheme of the embodiment of the utility model, the following will briefly introduce the drawings needed to be used in the embodiment, it should be understood that the following drawings only show some embodiments of the utility model, therefore should not be regarded as the limitation to the scope, for the ordinary skilled person in the art, on the premise of not paying the creative labor, other related drawings can also be obtained according to these drawings.

[0018] Figure 1 is the first application front view schematic diagram of the self-walking spanning type arch ring mold trolley described in embodiment 1;

[0019] Figure 2 is Figure 1 the local enlarged view of the middle A;

[0020] Figure 3 is the second application front view schematic diagram of the self-walking spanning type arch ring mold trolley described in embodiment 1;

[0021] Figure 4 is Figure 1 the local enlarged view of the middle B;

[0022] Figure 5 is the third application front view schematic diagram of the self-walking spanning type arch ring mold trolley described in embodiment 1;

[0023] Figure 6 is Figure 1 the local enlarged view of the middle C;

[0024] Figure 7 is the first application front view schematic diagram of the self-walking spanning arch formwork trolley described in embodiment 2;

[0025] Figure 8 is the second application front view schematic diagram of the self-walking spanning arch formwork trolley described in embodiment 2;

[0026] Figure 9 is the application side view schematic diagram of the self-walking spanning arch formwork trolley described in embodiment 3;

[0027] In the figure: 1, lower door frame; 2, middle section mold; 3, trolley lifting oil cylinder; 4, first supporting lead screw; 5, bottom section mold; 6, second supporting lead screw; 7, upper door frame; 8, first adjusting oil cylinder; 9, top mold frame; 10, top section mold; 11, foundation pit transverse support; 12, second adjusting oil cylinder; 13, auxiliary reinforcing plate between molds; 14, first support; 15, second support; 16, ladder; 17, ladder folding and unfolding driving oil cylinder; 18, maintenance water tank; 19, water pipeline; 20, beam type water sprayer; 21, inclined steel wire rope. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments.

[0029] Embodiment 1

[0030] Please refer to Figures 1-6 The embodiment provides a self-walking spanning arch formwork trolley for a tunnel main body structure, which comprises a lower door frame 1, an upper door frame 7, a top mold frame 9, a bottom section mold 5, a middle section mold 2 and a top section mold 10. The upper door frame 7 is supported on the lower door frame 1 through a trolley lifting oil cylinder 3, and the top section mold 10 is installed on the top mold frame 9. The self-walking spanning arch formwork trolley is characterized in that a cylinder body of the trolley lifting oil cylinder 3 is fixed on the upper door frame 7, and a free end of a piston rod thereof is pressed downward on the lower door frame 1. The middle section mold 2 is rotationally connected with the top section mold 10 and the bottom section mold 5. A folding and unfolding driving mechanism is installed between the upper door frame 7, the middle section mold 2 and the bottom section mold 5, and is used for driving the middle section mold 2 and the bottom section mold 5 to fold or unfold relative to the top section mold 10. When the middle section mold 2 and the bottom section mold 5 are in a maximum folding position, the bottom section mold 5 is located higher than a position before folding.

[0031] In the embodiment, the cylinder body of the trolley lifting oil cylinder 3 is installed on the upper door frame 7 instead of the lower door frame 1, so that the trolley lifting oil cylinder 3 does not occupy the limited space in the lower part of the tunnel, the space in the lower part of the tunnel is effectively released, and the problem of excessive space occupation of the trolley lifting oil cylinder 3 in the traditional design is avoided, so that the mechanical equipment, material storage and construction personnel operation in the tunnel can be more flexibly arranged, and the construction efficiency and space utilization are improved.

[0032] In the open-cut tunnel construction, the foundation pit lateral support 11 crossing the tunnel needs to be set, and the method for the self-walking spanning arch formwork trolley to walk along the length direction of the tunnel is as follows:

[0033] First, demolding is performed; then, according to the height position of the foundation pit lateral support 11 currently interfering with the walking, the free end of the piston rod of the trolley lifting oil cylinder 3 to be interfered is retracted to above the foundation pit lateral support 11, the corresponding form is folded by the folding and unfolding driving mechanism, so that the bottom segment form 5 can be located above the foundation pit lateral support 11, at this time, the trolley can continue to walk away from the interference position, and the free end of the piston rod of the corresponding trolley lifting oil cylinder 3 is lowered again and pressed on the lower door frame 1, so that the foundation pit lateral support 11 does not need to be disassembled.

[0034] The states in which the middle segment form 2 and the bottom segment form 5 are not folded are shown in Figure 1 and Figure 2 The state in which the middle segment form 2 is not folded and the bottom segment form 5 is folded is shown in Figure 3 and Figure 4 The state in which the bottom segment form 5 is not folded relative to the middle segment form 2 and the middle segment form 2 is folded is shown in Figure 5 and Figure 6 In summary, the purpose of folding is to span the foundation pit lateral support 11, and how to fold is determined according to the height position of the foundation pit lateral support 11.

[0035] Specifically, the folding and unfolding driving mechanism includes a first adjusting oil cylinder 8, a second adjusting oil cylinder 12, a first support 14 installed on the bottom segment form 5, and a second support 15 installed on the middle segment form 2; the two ends of the first adjusting oil cylinder 8 are respectively rotatably connected to the upper door frame 7 and the second support 15; and the two ends of the second adjusting oil cylinder 12 are respectively rotatably connected to the first support 14 and the second support 15.

[0036] The folding and unfolding driving mechanism is achieved by setting the first adjusting oil cylinder 8 and the second adjusting oil cylinder 12, which are respectively connected to the upper section frame 7, the middle section mold 2 and the bottom section mold 5, realizing the flexible folding and unfolding of the mold plate. The first adjusting oil cylinder 8 is connected to the upper section frame 7 and the second support 15, and the second adjusting oil cylinder 12 is connected to the first support 14 and the second support 15. This design enables the middle section mold 2 and the bottom section mold 5 to be accurately adjusted according to the height position of the foundation pit lateral support 11, thereby being more efficient and stable when crossing the support. In addition, the rotary connection mode of the oil cylinder enhances the flexibility and adaptability of the mechanism, which can meet the needs of different construction environments, further improving the construction efficiency and reducing the complexity of manual operation.

[0037] The first support lead screw 4 is detachably connected between the upper section frame 7 and the second support 15; and the second support lead screw 6 is detachably connected between the upper section frame 7 and the first support 14. The support lead screw enhances the structural stability of the mold plate positioning, preventing the mold plate from deforming or tilting due to uneven stress. Figure 4 The second support lead screw 6 is detached in the middle, Figure 6 Both the first support lead screw 4 and the second support lead screw 6 are detached in the middle.

[0038] The inter-mold auxiliary reinforcing plate 13 is detachably connected between the middle section mold 2 and the bottom section mold 5, further enhancing the overall structural strength and stability of the mold plate. When the middle section mold 2 and the bottom section mold 5 need to remain relatively unfolded, the inter-mold auxiliary reinforcing plate 13 is installed, for example as shown in Figure 2 and Figure 6 If not, it is detached, for example as shown in Figure 4 .

[0039] Example 2

[0040] Different from example 1, the self-propelled crossing arch mold plate trolley is also provided with a climbing ladder 16 and a climbing ladder folding and unfolding driving oil cylinder 17. The upper end of the climbing ladder 16 is rotatably connected to the upper section frame 7, and the lower end is used to support on the lower section frame 1. One end of the climbing ladder folding and unfolding driving oil cylinder 17 is rotatably connected to the upper section frame 7, and the other end is rotatably connected to the climbing ladder 16.

[0041] The climbing ladder 16 provides a convenient access for construction personnel. The upper end of the climbing ladder 16 is rotatably connected to the upper section frame 7, and the lower end is supported on the lower section frame 1. The driving oil cylinder realizes the automatic folding and unfolding function of the climbing ladder 16. This design is to facilitate crossing the foundation pit lateral support 11, as shown in Figure 7 and Figure 8 .

[0042] Example 3

[0043] As Figure 9As shown, different from the embodiment 1, the self-walking spanning arch ring formwork trolley is further provided with a water spraying maintenance system, the system comprising a maintenance water tank 18 installed on the upper door frame 7, a beam type water sprayer 20 with the nozzle facing upward, a water pump placed in the maintenance water tank 18, and a water conveying pipeline 19 connecting the water outlet of the water pump and the water inlet of the beam type water sprayer 20; one end of the beam type water sprayer 20 is fixedly connected with the upper door frame 7, and the part close to the other end is connected with the upper door frame 7 through the inclined steel wire rope 21, and the inclined steel wire rope 21 is located above the beam type water sprayer 20. Through the setting of the water spraying maintenance system, the automatic maintenance of the tunnel lining concrete is realized. The beam type water sprayer 20 is fixed through the inclined steel wire rope 21, so that the deformation of the beam of the beam type water sprayer 20 is avoided.

[0044] The preferred embodiments of the utility model are described above only, and are not used for limiting the utility model, for the person skilled in the art, the utility model can have various changes and changes. Any modification, equivalent replacement, improvement etc. that is made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A self-propelled straddling arch formwork trolley for the main structure of an open-cut tunnel, comprising a lower frame (1), an upper frame (7), a top formwork frame (9), a bottom section formwork (5), a middle section formwork (2), and a top section formwork (10), wherein the upper frame (7) is supported on the lower frame (1) by a trolley lifting cylinder (3), and the top section formwork (10) is installed on the top formwork frame (9), characterized in that, The cylinder body of the trolley lifting cylinder (3) is fixed to the upper frame (7), and the free end of the piston rod is pressed down on the lower frame (1); the middle section mold (2) is rotatably connected to the top section mold (10) and the bottom section mold (5); a folding and unfolding drive mechanism is installed between the upper frame (7), the middle section mold (2) and the bottom section mold (5) to drive the middle section mold (2) and the bottom section mold (5) to fold or unfold relative to the top section mold (10); when the middle section mold (2) and the bottom section mold (5) are in the maximum folded position, the bottom section mold (5) is in a higher position than before folding.

2. The self-propelled straddling arch formwork trolley according to claim 1, characterized in that, The folding and unfolding drive mechanism includes a first adjusting cylinder (8), a second adjusting cylinder (12), a first support (14) installed on the bottom section mold (5), and a second support (15) installed on the middle section mold (2); the two ends of the first adjusting cylinder (8) are rotatably connected to the upper frame (7) and the second support (15), respectively; the two ends of the second adjusting cylinder (12) are rotatably connected to the first support (14) and the second support (15), respectively.

3. The self-propelled straddling arch formwork trolley according to claim 2, characterized in that, A first support screw (4) is detachably connected between the upper frame (7) and the second support (15); a second support screw (6) is detachably connected between the upper frame (7) and the first support (14).

4. The self-propelled straddling arch formwork trolley according to claim 2 or 3, characterized in that, A detachable inter-mold reinforcement plate (13) is provided between the middle section mold (2) and the bottom section mold (5).

5. The self-propelled straddling arch formwork trolley according to claim 1, characterized in that, It also includes a ladder (16) and a ladder retraction and lowering drive cylinder (17); the upper end of the ladder (16) is rotatably connected to the upper frame (7), and the lower end is used to support the lower frame (1); one end of the ladder retraction and lowering drive cylinder (17) is rotatably connected to the upper frame (7), and the other end is rotatably connected to the ladder (16).

6. The self-propelled straddling arch formwork trolley according to claim 1, characterized in that, It also includes a water spraying maintenance system, which includes a maintenance water tank (18) installed on the upper frame (7), a beam sprinkler (20) with the nozzle facing upward, a water pump placed in the maintenance water tank (18), and a water supply pipe (19) connecting the outlet of the water pump to the inlet of the beam sprinkler (20); one end of the beam sprinkler (20) is fixedly connected to the upper frame (7), and the part near the other end is connected to the upper frame (7) by a diagonal steel wire rope (21), which is located above the beam sprinkler (20).

Images