Tunnel secondary lining steel bar prefabricated module assembly trolley and method

Abstract

The present invention provides a trolley and method for assembling prefabricated modules of tunnel secondary lining steel bars, which belongs to the technical field of tunnel construction, and includes a frame, wherein the frame includes a plurality of parallel main beams, a plurality of longitudinal beams parallel to each other are connected between the main beams, a plurality of columns are connected at the bottom of the connection between the longitudinal beams and the beams on both sides, a power cylinder is connected at the bottom of the column, and a walking wheel set is connected at the bottom of the power cylinder; the two ends of the main beams on both sides are respectively connected to longitudinal steel bar clamps, a plurality of annular steel bar clamps are connected between the two longitudinal steel bar clamps, the bottom of the annular steel bar clamps are connected to vertical supports, and the vertical supports are fixed on the main beams; a lifting assembly is connected to the frame. The present invention facilitates the positioning and installation of steel bars through the design of segmented segment steel bars and longitudinal steel bar clamps and annular steel bar clamps, and at the same time facilitates the installation of segment steel bars through a special-shaped sleeve with a beveled side, thereby reducing the labor intensity of workers and improving construction efficiency.

Description

Technical Field

[0001] The invention belongs to the technical field of tunnel construction, and in particular relates to a trolley and method for assembling prefabricated modules of secondary lining steel bars of a tunnel. Background Art

[0002] Tunnels are transportation facilities buried in the ground. They have complex structures and numerous construction processes, involving dozens of unit construction processes. Tunnel secondary lining is a key link in tunnel construction. It is an important load-bearing structure of tunnel engineering and the last line of defense for tunnel engineering construction.

[0003] At present, transportation infrastructure is developing rapidly, and more and more tunnels are being built in mountainous areas with complex terrain. Therefore, tunnel quality control will be the focus of tunnel construction. In the process of highway tunnel construction, the quality control of the secondary lining construction is the key to affecting the overall construction of the tunnel project, and the secondary lining steel bar is an important part that affects the durability and stability of the tunnel. Summary of the invention

[0004] The present invention aims to solve the technical problems in the related art at least to a certain extent. To this end, the present invention proposes a tunnel secondary lining steel bar prefabricated module assembly trolley and method.

[0005] On the one hand, the technical solution proposes an assembly trolley for prefabricated modules of tunnel secondary lining steel bars, including a frame, the frame including several parallel main beams, several parallel longitudinal beams connected between the main beams, several columns connected at the bottom of the connection between the longitudinal beams and the beams on both sides, the bottom of the columns are connected to power cylinders, and the bottom of the power cylinders are connected to walking wheel groups; the two ends of the main beams on both sides are respectively connected to longitudinal steel bar clamps, several circumferential steel bar clamps are connected between the two longitudinal steel bar clamps, the bottom of the circumferential steel bar clamps are connected to vertical supports, and the vertical supports are fixed on the main beams; the frame is connected to a lifting component.

[0006] Preferably, a panel is arranged on the main beam; and a walking staircase is connected to one side of the frame.

[0007] Preferably, the lifting assembly comprises a crane which is slidable on mutually perpendicular tracks which are mounted on the panel.

[0008] Preferably, the lifting assembly includes two supports symmetrically connected to the outermost columns, the supports are provided with guide grooves vertically, and the guide grooves are vertically slidably connected to the lifting seats; the top of the supports is rotatably connected to the transmission shaft, one end of the transmission shaft is connected to the driving motor, the transmission shaft is fixedly connected to the transmission sprocket, the transmission sprocket is connected to a transmission chain that cooperates with the transmission sprocket, one end of the transmission chain is connected to the lifting seat, and the other end of the transmission chain is connected to the counterweight block.

[0009] Preferably, the lifting seats on both sides are symmetrically provided with slots, and the extension plates can be inserted into the slots to form a lifting space.

[0010] Preferably, the walking wheel group includes a support seat, a side wall of the support seat is rotatably connected to one end of the first connecting rod, the other end of the first connecting rod is rotatably connected to the second connecting rod, and the bottom of the second connecting rod is connected to the walking wheel; the side wall of the support seat on one side of the first connecting rod is rotatably connected to a hydraulic rod, the output end of the hydraulic rod is connected to the middle part of the first connecting rod, and the side wall of the support seat on one side of the second connecting rod is rotatably connected to a guide rod, and one end of the guide rod is connected to the middle part of the second connecting rod; when the first connecting rod is parallel to the second connecting rod, the walking wheel can extend out of the support seat.

[0011] Preferably, a plurality of secondary crossbeams are provided at the bottom of the main crossbeam parallel to the main crossbeam, one end of the secondary crossbeam is connected to one side of the column, and the other end of the secondary crossbeam is connected to the annular steel bar clamp.

[0012] Preferably, a first diagonal brace is connected between the main crossbeam and the column, and a second diagonal brace is connected between the secondary crossbeam and the column.

[0013] Secondly, this technical solution also proposes a prefabricated steel bar module for assembling a trolley for a tunnel secondary lining prefabricated steel bar module, comprising a plurality of arc-shaped segmental steel bars, adjacent segmental steel bars being connected by special-shaped sleeves, one side of the special-shaped sleeve being cross-cut and the other side being obliquely cut.

[0014] On the other hand, the technical solution also proposes a steel bar installation method using the tunnel secondary lining steel bar prefabricated module assembly trolley, comprising the following steps:

[0015] S1. Preliminary preparation work: ensure that the segment reinforcement profile is consistent with the lining profile, and measure and lay out the trolley travel line and trolley space;

[0016] S2. The trolley moves, the hydraulic rod is activated, the travel wheels extend out of the support seat, and the trolley is moved to the designated position;

[0017] S3. Positioning the trolley. After the centerline of the trolley coincides with the centerline of the tunnel, retract the hydraulic rod to retract the travel wheels back into the support seat and fix the trolley to the specified position;

[0018] S4. The trolley is lifted and the power cylinder is started to make the longitudinal steel bar clamps and the annular steel bar clamps stick to the inner wall of the tunnel;

[0019] S5. Rebar binding. The secondary lining steel bars are prefabricated in the factory. The segmental steel bars are bound in the hole. Workers walk up the stairs to the panel, place the segmental steel bars on the lifting seat, start the driving motor of the lifting assembly, and transport the segmental steel bars to the panel; position and fix the steel bars according to the position of the annular steel bar clamps; connect the segmental steel bars through special-shaped sleeves;

[0020] S6. System conversion: After the steel bar segments are assembled, they are connected to the reserved steel bars of the inverts on both sides, the power cylinder is started, the trolley is lowered, and the stress state is changed from the trolley stress to the overall secondary lining steel bar structure stress;

[0021] S7. After the trolley descends and exits and the system conversion is completed, the hydraulic rod is started to extend the travel wheels out of the support seat and move to the next stage of construction until all the tunnel reinforcement is installed.

[0022] Compared with the prior art, the above technical solution has the following advantages or beneficial effects:

[0023] 1. The present invention facilitates the positioning and installation of steel bars through the design of segmented steel bars and longitudinal steel bar clamps and circumferential steel bar clamps. At the same time, the installation of segment steel bars is facilitated through a special-shaped sleeve with an oblique cut on one side, thereby reducing the labor intensity of workers and improving construction efficiency.

[0024] 2. The present invention provides a lifting assembly on the side of the column, which makes it convenient for workers to transport segmental steel bars. At the same time, an extension plate can be connected between the lifting assemblies on both sides for transporting steel bar modules.

[0025] 3. The present invention drives the traveling wheels to extend out and retract into the supporting seat through the hydraulic rod, which facilitates the fixing of the trolley when positioning the trolley and improves the construction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The accompanying drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0027] Figure 1 It is a schematic diagram of the overall structure of the first embodiment.

[0028] Figure 2 It is a front elevation view of the first embodiment.

[0029] Figure 3 It is a side elevation view of the embodiment.

[0030] Figure 4 It is a schematic diagram of the skeleton structure of Example 1.

[0031] Figure 5 It is a schematic diagram of segment steel bar assembly of the present invention.

[0032] Figure 6 It is a schematic diagram of the steel bar module of the present invention.

[0033] Figure 7 It is a schematic diagram of the skeleton structure of Example 2.

[0034] Figure 8 yes Figure 7Enlarged view of point A in the middle.

[0035] Fig. 9 This is a schematic diagram of installing the extension plate in the second embodiment.

[0036] Fig.10 It is a cross-sectional view of the traveling wheel assembly in the traveling state.

[0037] Fig.11 It is a cross-sectional view of the traveling wheel set in the folded state.

[0038] Fig.12 It is a flow chart of the installation of the second lining steel bars of the present invention.

[0039] Description of reference numerals:

[0040] 1. Main beam; 2. Column; 3. First diagonal brace; 4. Longitudinal beam; 5. Vertical brace; 6. Secondary beam; 7. Second diagonal brace; 8. Panel; 9. Circumferential steel bar clamp; 10. Longitudinal steel bar clamp; 11. Hoist; 12. Track; 13. Segmental steel bar; 14. Steel bar module; 15. Special-shaped sleeve; 16. Walking stairs; 17. Power cylinder; 18. Walking wheel set; 19. Support seat; 20. Lifting assembly; 21. Support seat; 22. Guide groove; 23. Lifting seat; 24. Clamping groove; 25. Driving motor; 26. Transmission shaft; 27. Transmission sprocket; 28. Transmission chain; 29. ​​Counterweight; 31. Guide rod; 32. First connecting rod; 33. Hydraulic rod; 34. Second connecting rod; 35. Walking wheel; 36. Extension plate. DETAILED DESCRIPTION

[0041] In order to clearly illustrate the technical features of the present solution, the present invention is described in detail below through specific implementation methods and in combination with the accompanying drawings. The disclosure below provides many different embodiments or examples for realizing different structures of the present invention. In order to simplify the disclosure of the present invention, the components and settings of specific examples are described below. In addition, the present invention may repeat reference numbers and / or letters in different examples. This repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. It should be noted that the components illustrated in the accompanying drawings are not necessarily drawn to scale. The present invention omits the description of known components and processing technologies and processes to avoid unnecessary limitations on the present invention. The orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", and "third" are used only for descriptive purposes and cannot be understood as indicating or implying relative importance. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] Embodiment 1:

[0043] refer to Figure 1-Figure 4 In order to solve the problem of steel bar positioning, this embodiment proposes a tunnel secondary lining steel bar prefabricated module assembly trolley, including a frame, the frame includes a plurality of parallel main beams 1, a plurality of longitudinal beams 4 parallel to each other are connected between the main beams 1, a plurality of columns 2 are connected at the bottom of the connection between the longitudinal beams 4 and the beams on both sides, a power cylinder 17 is connected at the bottom of the column 2, and a walking wheel group 18 is connected at the bottom of the power cylinder 17; the two ends of the main beams 1 on both sides are respectively connected to the longitudinal steel bar clamps 10, a plurality of annular steel bar clamps 9 are connected between the two longitudinal steel bar clamps 10, the bottom of the annular steel bar clamps 9 is connected to the vertical support 5, and the vertical support 5 is fixed on the main beam 1; a panel 8 is arranged on the main beam 1; a walking staircase 16 is connected to one side of the frame; and a lifting assembly 20 is connected to the frame. The lifting assembly 20 includes a crane 11, which can slide on mutually perpendicular tracks 12, and the track 12 is installed on the panel 8. A plurality of secondary crossbeams 6 are arranged at the bottom of the main crossbeam 1 parallel to the main crossbeam 1 , one end of the secondary crossbeam 6 is connected to one side of the column 2 , and the other end of the secondary crossbeam 6 is connected to the annular steel bar clamp 9 .

[0044] In addition, the prefabricated steel bar module of this embodiment includes Figure 5 and Figure 6 Two types, Figure 5 The steel bar prefabricated module includes a plurality of arc-shaped segment steel bars 13, and adjacent segment steel bars 13 are connected by special-shaped sleeves 15. One side of the special-shaped sleeve 15 is normal, and the other side is cut. The prefabricated steel bar is threaded in advance, and the special-shaped sleeve is installed. When assembled on site, the cut end is connected to another segment steel bar 13. The special-shaped sleeve 15 is provided to facilitate the centering of the steel bars during the installation process. The steel bar prefabricated module is installed by first hoisting it onto the panel 8 with a crane 11 and then assembling it. Figure 6 The prefabricated steel bar module is assembled first and then hoisted to divide the secondary lining steel bars into a plurality of steel bar modules 14. The steel bar modules 14 are installed from one side to the other. The positioning of the steel bar modules 14 is determined by positioning fixtures and connected by special-shaped sleeves 15.

[0045] Embodiment 2:

[0046] refer to Figure 7-Figure 9 As shown, other parts are the same as those of the first embodiment, except that: the lifting assembly 20 of this embodiment includes two supports 21 symmetrically connected to the outermost column 2, the supports 21 are vertically provided with guide grooves 22, and the guide grooves 22 are vertically slidably connected to the lifting seat 23; the top of the support 21 is rotatably connected to the transmission shaft 26, one end of the transmission shaft 26 is connected to the driving motor 25, the transmission shaft 26 is fixedly connected to the transmission sprocket 27, the transmission sprocket 27 is connected to the transmission chain 28 that cooperates with the transmission sprocket 27, one end of the transmission chain 28 is connected to the lifting seat 23, and the other end of the transmission chain 28 is connected to the counterweight 29. The lifting seats 23 on both sides are symmetrically provided with card slots 24, and the extension plate 36 can be inserted into the card slots 24 to form a lifting space.

[0047] The advantage of the lifting assembly 20 of this embodiment is that, compared with the crane 11 of the first embodiment, the device is easy to connect. In addition, when lifting the steel bar module 14, the lifting assembly 20 of this embodiment can install an extension plate 36 between the two lifting seats 23, which is more convenient and quick when lifting the steel bar formwork, and the extension plate 36 can be removed when not in use to facilitate the passage of vehicles and people at the bottom of the trolley.

[0048] Working principle: First, start the drive motor 25, which drives the drive sprocket 27 on the drive shaft 26 to rotate, and the drive sprocket 27 drives the drive chain 28 above to move. Since the two sections of the drive chain 28 have a counterweight block 29 and a lifting seat 23 respectively, the weight of the counterweight block 29 and the lifting seat 23 loaded with steel bars are equivalent. Driven by the drive sprocket 27, one end of the counterweight block 29 descends and one end of the lifting seat 23 rises, thereby realizing the lifting function.

[0049] Embodiment three:

[0050] refer to Fig.10 and Fig.11 As shown, other parts are the same as those in Example 1, except that: the walking wheel group 18 includes a support seat 19, and the side wall of the support seat 19 is rotatably connected to one end of the first connecting rod 32, and the other end of the first connecting rod 32 is rotatably connected to the second connecting rod 34, and the bottom of the second connecting rod 34 is connected to the walking wheel 35; the side wall of the support seat 19 on one side of the first connecting rod 32 is rotatably connected to the hydraulic rod 33, and the output end of the hydraulic rod 33 is connected to the middle part of the first connecting rod 32, and the side wall of the support seat 19 on one side of the second connecting rod 34 is rotatably connected to the guide rod 31, and one end of the guide rod 31 is connected to the middle part of the second connecting rod 34; when the first connecting rod 32 and the second connecting rod 34 are in a straight line, the walking wheel 35 can extend out of the support seat 19.

[0051] Working principle: First, the hydraulic rod 33 contracts, driving the first connecting rod 32 to move to one side. At this time, due to the function of the guide rod 31, the second connecting rod 34 moves in the opposite direction, and the walking wheel 35 is retracted into the support seat 19; the hydraulic rod 33 extends to extend the walking wheel 35 out of the support seat 19.

[0052] Steel bar installation method:

[0053] S1. Preliminary preparation work: determine whether the tunnel lining profile meets the requirements before processing the segment reinforcement, and measure and lay out the trolley travel line and trolley space in advance to prevent insufficient clearance or width from affecting subsequent work.

[0054] S2. The trolley moves, and the hydraulic lever 33 is activated to extend the travel wheel 35 out of the support seat 19, and the trolley is moved to the designated position;

[0055] S3. After the trolley is positioned and the centerline of the trolley coincides with the centerline of the tunnel, the hydraulic rod 33 is retracted to retract the travel wheel 35 back into the support seat 19 and fix the trolley to the specified position;

[0056] S4. The trolley is lifted and the power cylinder 17 is started, so that the longitudinal steel bar fixture 10 and the annular steel bar fixture 9 are attached to the inner wall of the tunnel;

[0057] S5. Steel bar binding, the secondary lining steel bar is prefabricated in the factory, the semi-finished segment steel bar is bound in the hole, the worker walks to the panel 8 via the walking stairs 16, places the segment steel bar 13 on the lifting seat 23, starts the driving motor 25 of the lifting assembly 20, and transports the segment steel bar 13 to the panel 8; the steel bar is positioned and fixed according to the position of the annular steel bar fixture 9; the segment steel bar 13 is connected through the special-shaped sleeve 15;

[0058] S6. System conversion: After the steel bar segments are assembled, they are connected to the reserved steel bars of the inverts on both sides, the power cylinder 17 is started, the trolley descends, and the stress state is changed from the trolley stress to the overall secondary lining steel bar structure stress.

[0059] S7. The trolley descends and exits. After the system conversion is completed, the hydraulic rod 33 is started to extend the travel wheel 35 out of the support seat 19 and move to the next stage of construction until all the tunnel reinforcement is installed.

[0060] Although the above describes the specific implementation mode of the invention in conjunction with the drawings, it is not intended to limit the scope of protection of the invention. Based on the technical solution of the present invention, various modifications or variations that can be made by those skilled in the art without creative work are still within the scope of protection of the present invention.

Claims

1. A tunnel secondary lining steel bar prefabricated module assembly trolley, including a frame, characterized in that: The frame comprises a plurality of parallel main beams (1), a plurality of longitudinal beams (4) parallel to each other are connected between the main beams (1), a plurality of columns (2) are connected at the bottom of the connection between the longitudinal beams (4) and the beams on both sides, the bottom of the columns (2) are connected to a power cylinder (17), and the bottom of the power cylinder (17) is connected to a walking wheel set (18); the two ends of the main beams (1) on both sides are respectively connected to longitudinal steel bar clamps (10), a plurality of circumferential steel bar clamps (9) are connected between the two longitudinal steel bar clamps (10), the bottom of the circumferential steel bar clamps (9) are connected to vertical supports (5), and the vertical supports (5) are fixed on the main beams (1); the frame is connected to a lifting assembly (20); The lifting assembly (20) comprises two supports (21) symmetrically connected to the outermost columns (2), the supports (21) are vertically provided with guide grooves (22), and the guide grooves (22) are vertically slidably connected to the lifting seat (23); the top of the support (21) is rotatably connected to the transmission shaft (26), one end of the transmission shaft (26) is connected to the driving motor (25), the transmission shaft (26) is fixedly connected to the transmission sprocket (27), the transmission sprocket (27) is connected to the transmission chain (28) matched with the transmission sprocket (27), one end of the transmission chain (28) is connected to the lifting seat (23), and the other end of the transmission chain (28) is connected to the counterweight (29); The lifting seats (23) on both sides are symmetrically provided with slots (24), and the extension plates (36) can be inserted into the slots (24) to form a lifting space.

2. The tunnel secondary lining steel bar prefabricated module assembly trolley according to claim 1 is characterized by: A panel (8) is arranged on the main crossbeam (1); and a walking staircase (16) is connected to one side of the frame.

3. The tunnel secondary lining steel bar prefabricated module assembly trolley according to claim 1 is characterized by: The lifting assembly (20) comprises a crane (11) which is capable of sliding on mutually perpendicular rails (12) which are mounted on the panel (8).

4. The tunnel secondary lining steel bar prefabricated module assembly trolley according to claim 1 is characterized by: The travel wheel assembly (18) comprises a support seat (19), wherein a side wall of the support seat (19) is rotatably connected to one end of a first connecting rod (32), the other end of the first connecting rod (32) is rotatably connected to a second connecting rod (34), and the bottom of the second connecting rod (34) is connected to a travel wheel (35); a side wall of the support seat (19) on one side of the first connecting rod (32) is rotatably connected to a hydraulic rod (33), the output end of the hydraulic rod (33) is connected to the middle of the first connecting rod (32), and a side wall of the support seat (19) on one side of the second connecting rod (34) is rotatably connected to a guide rod (31), one end of the guide rod (31) is connected to the middle of the second connecting rod (34); when the first connecting rod (32) is parallel to the second connecting rod (34), the travel wheel (35) can extend out of the support seat (19).

5. The tunnel secondary lining steel bar prefabricated module assembly trolley according to claim 1 is characterized by: A plurality of secondary crossbeams (6) are provided at the bottom of the main crossbeam (1) and are parallel to the main crossbeam (1). One end of the secondary crossbeam (6) is connected to one side of the column (2), and the other end of the secondary crossbeam (6) is connected to a circumferential steel bar clamp (9).

6. The tunnel secondary lining steel bar prefabricated module assembly trolley according to claim 5 is characterized by: A first diagonal brace (3) is connected between the main crossbeam (1) and the column (2), and a second diagonal brace (7) is connected between the secondary crossbeam (6) and the column (2).

7. A prefabricated steel bar module for assembling a trolley for the prefabricated steel bar module for the tunnel secondary lining as claimed in claim 1, characterized in that: It comprises a plurality of arc-shaped segment steel bars (13), adjacent segment steel bars (13) are connected by a special-shaped sleeve (15), one side of the special-shaped sleeve (15) is cross-cut, and the other side is bevel-cut.

8. A method for installing steel bars using the tunnel secondary lining steel bar prefabricated module assembly trolley according to claim 1, characterized in that The following steps are involved: S1. Preliminary preparation work: ensure that the segment reinforcement profile is consistent with the lining profile, and measure and lay out the trolley travel line and trolley space; S2. The trolley moves, the hydraulic lever (33) is activated, the travel wheel (35) extends out of the support seat (19), and the trolley is moved to the designated position; S3. After the trolley is positioned and the centerline of the trolley coincides with the centerline of the tunnel, the hydraulic rod (33) is retracted to retract the travel wheel 35 back into the support seat (19) and fix the trolley to the specified position; S4. The trolley is lifted and the power cylinder (17) is started to make the longitudinal steel bar fixture (10) and the annular steel bar fixture (9) adhere to the inner wall of the tunnel; S5. Steel bar binding, the secondary lining steel bar is prefabricated in the factory, the segment steel bar is bound in the hole, the worker walks to the panel (8) via the walking stairs (16), places the segment steel bar (13) on the lifting seat (23), starts the driving motor (25) of the lifting assembly (20), and transports the segment steel bar (13) to the panel (8); the steel bar is positioned and fixed according to the position of the annular steel bar fixture (9); the segment steel bar (13) is connected through the special-shaped sleeve (15); S6. System conversion: After the steel segment is assembled, it is connected to the reserved steel bars of the invert arch on both sides, the power cylinder (17) is started, the trolley is lowered, and the stress state is changed from the trolley stress to the overall secondary lining steel structure stress; S7. After the trolley descends and exits, and the system conversion is completed, the hydraulic rod (33) is activated to extend the travel wheel (35) out of the support seat (19) and move to the next stage of construction until all the tunnel reinforcement is installed.

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