Steel arch frame and assembling method of steel arch frame

Abstract

The invention discloses a steel arch frame and an assembling method of the steel arch frame. Two sets of advancing sliding rails which are symmetrical up and down are fixedly installed in a beam frame assembly, a needle beam assembly is installed in the beam frame assembly in a sliding mode through the advancing sliding rails, supports are fixedly installed at the bottoms of the two ends of the needle beam assembly, and the needle beam assembly and the supports are fixedly installed on the beam frame assembly. Advancing transmission assemblies are arranged at the tops of the two ends of the needle beam assembly, and guardrails are fixedly installed at the positions, located on the outer sides of the advancing transmission assemblies, of the needle beam assembly; the vertical oil cylinder contracts to enable the support to suspend, at the moment, a winch on the rear portion is started to drive the needle beam assembly to move forwards with the beam frame assembly as a supporting point, and the vertical oil cylinder drives the support to make contact with the ground and support the whole beam frame assembly. At the moment, the winch is started to drive the whole beam frame assembly to move forwards by taking the needle beam assembly as a supporting point, so that the trolley can be conveniently moved to the next pouring position, and the effect of moving and advancing without depending on a sliding rail is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of tunnel lining construction, in particular to a steel arch frame and an assembling method of the steel arch frame. Background Art

[0002] The steel formwork trolley is a special equipment designed and manufactured to improve the surface finish and lining speed of tunnel lining and reduce labor intensity. The steel formwork trolley is generally composed of a template part, a gantry body part, a walking system, a supporting mechanism, a translation system and other auxiliary devices. The use of a steel formwork trolley can not only avoid construction interference and improve construction efficiency, but more importantly, it greatly improves the lining construction quality in the tunnel, and also improves the mechanization degree of tunnel construction.

[0003] When the existing steel formwork trolley is in use, as the tunnel construction progresses, if one section of the lining construction is not centered, it will cause the subsequent lining construction section to deviate greatly, which will affect the construction progress. In addition, when it is under construction, it needs to rely on slide rails, and the laying of slide rails will increase the construction time and increase the labor intensity of the construction workers, which will delay the overall construction progress.

[0004] Therefore, the demand for high-reliability products is urgent, so we proposed a steel arch construction method, which has the function of moving and correcting the centering to avoid large deviations without relying on slide rails. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a steel arch construction method, which has the advantages of being able to move without relying on slide rails and being able to perform centering correction to avoid large errors, thereby solving the above-mentioned problems.

[0006] In order to achieve the above-mentioned purpose of being able to move and advance without relying on slide rails and to correct the centering to avoid large error deviations, the present invention provides the following technical solutions: a steel arch frame, wherein two sets of upper and lower symmetrical traveling slide rails are fixedly installed inside the beam frame assembly, a needle beam assembly is slidably installed in the beam frame assembly through the traveling slide rails, supports are fixedly installed at the bottom of both ends of the needle beam assembly, side molds are arranged on the left and right sides of the beam frame assembly, a top mold is arranged above the beam frame assembly, a plurality of hydraulic cylinders are fixedly installed on the outside of the beam frame assembly, and the side molds and the top molds are supported and positioned by the hydraulic cylinders, traveling transmission assemblies are arranged on the tops of both ends of the needle beam assembly, and the traveling transmission assemblies at both ends are centrally symmetrically arranged, and a guardrail is fixedly installed on the outside of the traveling transmission assembly of the needle beam assembly.

[0007] As an optimization, the area where the needle beam assembly is surrounded by guardrails forms a workbench, and an electrical control system is provided on the workbench. The hydraulic cylinder is controlled by the electrical control system, and the electrical control system can control the hydraulic cylinder to extend and retract, thereby driving the side mold and the top mold to support the upright mold for lining or to shrink for demolding.

[0008] As an optimization, the traveling transmission assembly includes a winch fixedly mounted on a workbench, the winch is wound with a steel cable through a winding roller, pulley seats are fixedly mounted on the opposite side of the beam frame assembly and the workbench, and the steel cable passes through the pulley seat in sequence, and the end of the steel cable is fixedly mounted on the workbench, the steel cable will be wound by starting the winch, and then the needle beam assembly will be pulled as a whole to slide along the traveling slide rail through the steel cable.

[0009] As an optimization, three groups of pulley seats are arranged on one side, and the three groups of pulley seats opposite to each other on both sides are arranged alternately.

[0010] As an optimization, a vertical cylinder is fixedly installed between the support and the needle beam assembly, and the vertical cylinder includes three cylinders. The cylinders on both sides are inclined 60° and are symmetrical to each other. The vertical cylinder is controlled by an electrical control system. The electrical control system controls the extension and retraction of the vertical cylinder, which will make the support butt against the ground to support the beam frame assembly or make the support float on the ground to facilitate the movement of the trolley.

[0011] As an optimization, an installation groove is opened in the middle of the top side of the support, and a leveling cylinder is arranged in the installation groove. The leveling cylinder is controlled by an electrical control system. The electrical control system controls the vertical cylinder and the leveling cylinder to extend and retract, so as to facilitate positioning and alignment.

[0012] The construction method of the steel arch is as follows: S. First, the needle beam assembly is lifted by a crane and installed into the beam frame assembly by sliding along the travel rail. Then, the support, hydraulic cylinder and guardrail are assembled in sequence. At this time, the support is suspended and does not touch the ground. The hydraulic cylinder is used to support and position the side mold and the top mold so that the side mold and the top mold are circularly surrounded by the outside of the beam frame assembly. The assembly of the steel mold trolley is completed. S. When lining, first clean the tunnel, then roughen the construction joints and rinse with pressure water; S. Then, the inner wall of the tunnel is lined with steel bars, and the steel bars are tied tightly with pads, staggered and dispersed, and the steel bars are tied around the inner wall of the tunnel within a range of 240°, and the four pouring positions of the lining trolley are advanced; S. After that, the side formwork and top formwork can be supported by starting the hydraulic cylinder, so that the side formwork and top formwork are supported in a circle in the tunnel, and the formwork operation is completed. Then, concrete can be pumped into the formwork through the concrete delivery pump, and the concrete can be vibrated with a vibrator to ensure that there are no bubbles or gaps inside the concrete. S. After the concrete solidifies, since the support is suspended on the ground, when the rear winch is started to reel in the steel cable, the needle beam assembly will be pulled forward along the travel rail. At the same time, the hydraulic cylinder will be started to contract, causing the side mold and top mold to separate from the concrete, thus completing the demolding operation. S, and then start the vertical cylinder to drive the support to contact the ground and lift the entire beam frame assembly as well as the side form and top form off the ground. At this time, start the winch in front to pull the entire beam frame assembly forward to the next casting position, thereby completing the travel operation of the trolley.

[0013] As an optimization, when moving to the next pouring position for lining pouring, fine-tuning is performed by moving the vertical cylinder up and down and the leveling cylinder left and right to ensure accurate positioning.

[0014] Compared with the prior art, the present invention provides a steel arch frame, which has the following beneficial effects: The steel arch frame is suspended by contracting the vertical oil cylinder. At this time, starting the winch at the rear will drive the needle beam assembly to move forward with the beam frame assembly as the support point, and the vertical oil cylinder drives the support to contact the ground and lift the beam frame assembly as a whole. At this time, starting the winch can drive the beam frame assembly as a whole to move forward with the needle beam assembly as the support point, thereby facilitating the movement of the trolley to the next casting position, thereby achieving the effect of moving without relying on the slide rail.

[0015] The steel arch frame is easy to install and disassemble the steel mold trolley through assembly. The construction personnel can measure and start the vertical cylinder to move up and down and the leveling cylinder to move left and right for fine adjustment, which can ensure accurate positioning, thereby achieving the effect of centering correction to avoid large error deviation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 It is a front schematic diagram of the structure of the present invention; Figure 3 It is a schematic diagram of the structure of the present invention; Figure 4 It is a schematic diagram of the beam frame assembly structure of the present invention; Figure 5 This is a schematic diagram of the needle beam assembly structure of the present invention; Figure 6 It is a schematic diagram of the traveling structure of the needle beam assembly of the present invention; Figure 7 For the present invention Figure 6 A schematic diagram of the enlarged local structure in the middle.

[0017] In the figure: 1. Beam frame assembly; 2. Travel slide rail; 3. Needle beam assembly; 4. Support; 5. Side mold; 6. Top mold; 7. Hydraulic cylinder; 8. Travel transmission assembly; 9. Guardrail; 10. Winch; 11. Steel cable; 12. Pulley seat; 13. Vertical cylinder; 14. Leveling cylinder. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] See also Figure 1-2 A steel arch frame, two groups of symmetrical travel rails 2 are fixedly installed inside the beam frame assembly 1, a needle beam assembly 3 is slidably installed in the beam frame assembly 1 through the travel rails 2, and supports 4 are fixedly installed at the bottom of both ends of the needle beam assembly 3. A vertical oil cylinder 13 is fixedly installed between the support 4 and the needle beam assembly 3, and the vertical oil cylinder 13 includes three oil cylinders, the oil cylinders on both sides are inclined 60° and symmetrical to each other, and the vertical oil cylinder 13 is controlled by an electrical control system. The electrical control system controls the extension and contraction of the vertical oil cylinder 13, which will make the support 4 abut against the ground to support the beam frame assembly 1 or make the support 4 suspended on the ground, which is convenient for the trolley to move; See also Figure 1-6 Side molds 5 are provided on the left and right sides of the beam frame assembly 1, a top mold 6 is provided on the top of the beam frame assembly 1, a plurality of hydraulic cylinders 7 are fixedly installed on the outer side of the beam frame assembly 1, and the side molds 5 and the top molds 6 are supported and positioned by the hydraulic cylinders 7, and travel transmission assemblies 8 are provided on the top of both ends of the needle beam assembly 3, and the travel transmission assemblies 8 at both ends are centrally symmetrically arranged, and a guardrail 9 is fixedly installed on the outer side of the travel transmission assembly 8 of the needle beam assembly 3.

[0020] See also Figure 3 The area of ​​the needle beam assembly 3 surrounded by the guardrail 9 forms a workbench, and an electrical control system is provided at the workbench. The hydraulic cylinder 7 is controlled by the electrical control system. The electrical control system can control the hydraulic cylinder 7 to extend and retract, thereby driving the side mold 5 and the top mold 6 to support the standing mold for lining or to shrink for demolding; See also Figure 4-6The travel transmission assembly 8 includes a winch 10 fixedly mounted on the workbench, the winch 10 is wound with a steel cable 11 through a winding roller, a pulley seat 12 is fixedly mounted on the beam frame assembly 1 and the opposite side of the workbench, and the steel cable 11 passes through the pulley seat 12 in sequence, and three groups of pulley seats 12 are arranged on one side, and the three groups of pulley seats 12 opposite to each other on both sides are staggered, and the end of the steel cable 11 is fixedly mounted on the workbench, and the steel cable 11 will be wound up by starting the winch 10, and then the needle beam assembly 3 will be pulled by the steel cable 11 to slide along the travel slide rail 2 as a whole; See also Figure 7 A mounting groove is provided in the middle of the top side of the support 4, and a leveling cylinder 14 is arranged in the mounting groove. The leveling cylinder 14 is controlled by an electrical control system, and the electrical control system controls the vertical cylinder 13 and the leveling cylinder 14 to extend and retract, so as to facilitate positioning and alignment.

[0021] See also Figure 1-7 The construction method of the steel arch is as follows: S1. First, the needle beam assembly 3 is lifted by a crane, and is slidably installed into the beam frame assembly 1 along the travel slide rail 2, and then the support 4, hydraulic cylinder 7 and guardrail 9 are assembled in sequence. At this time, the support 4 is suspended and does not touch the ground, and the side mold 5 and the top mold 6 are supported and positioned by the hydraulic cylinder 7, so that the side mold 5 and the top mold 6 are circularly surrounded on the outside of the beam frame assembly 1, and the assembly of the steel mold trolley is completed; S2. When lining, first clean the tunnel, then roughen the construction joints and rinse with pressurized water; S3, then the inner wall of the tunnel is lined with steel bars, and the steel bars are tied tightly with pads, staggered and dispersed, and the steel bars are tied around the inner wall of the tunnel within a range of 240°, and four pouring positions of the lining trolley are advanced; S4, then the side formwork 5 and the top formwork 6 can be supported by starting the hydraulic cylinder 7, so that the side formwork 5 and the top formwork 6 are supported in a circular shape in the tunnel, that is, the formwork operation is completed, and then concrete can be pumped into the formwork through a concrete delivery pump, and the concrete can be vibrated by a vibrator to ensure that there are no bubbles and gaps inside the concrete; S5. After the concrete solidifies, since the support 4 is suspended on the ground, when the rear winch 10 is started to reel in the steel cable 11, the needle beam assembly 3 will be pulled forward along the travel slide rail 2 as a whole. At the same time, the hydraulic cylinder 7 will be started to contract to separate the side mold 5 and the top mold 6 from the concrete, thus completing the demolding operation. S6, and then start the vertical cylinder 13 to drive the support 4 to contact the ground and lift the beam frame assembly 1 as a whole, as well as the side mold 5 and the top mold 6 off the ground. At this time, start the winch 10 in front to pull the beam frame assembly 1 as a whole forward to the next casting position, thereby completing the travel operation of the trolley; when moving to the next casting position for lining casting, fine-tuning is performed by moving the vertical cylinder 13 up and down and the leveling cylinder 14 left and right to ensure accurate positioning.

[0022] To sum up, the steel arch frame is suspended by contracting the vertical cylinder 13 to make the support 4 suspended. At this time, starting the winch 10 at the rear will drive the needle beam assembly 3 to move forward with the beam frame assembly 1 as the support point, and the vertical cylinder 13 drives the support 4 to contact the ground and support the beam frame assembly 1 as a whole. At this time, starting the winch 10 can drive the beam frame assembly 1 as a whole to move forward with the needle beam assembly 3 as the support point, thereby facilitating the movement of the trolley to the next casting position, thereby achieving the effect of moving without relying on the slide rail.

[0023] The steel arch frame is convenient for installation and disassembly of the steel mold trolley through assembly. The construction personnel take measurements and start the vertical cylinder 13 to move up and down and the leveling cylinder 14 to move left and right for fine adjustment, which can ensure accurate positioning, thereby achieving the effect of centering correction to avoid large error deviation.

[0024] In the description of the present invention, unless otherwise clearly specified and limited, the terms "set", "install", "connect", "connect", and "fix" 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 an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] The standard parts used in the present invention can all be purchased from the market, and the special-shaped parts can all be customized according to the description and the drawings.

[0026] The above are only preferred specific implementation modes of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and inventive concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A steel arch frame for tunnel support construction, comprising a beam frame assembly (1), wherein two groups of upper and lower symmetrical travel rails (2) are fixedly installed inside the beam frame assembly (1), a needle beam assembly (3) is slidably installed inside the beam frame assembly (1) through the travel rails (2), and supports (4) are fixedly installed at the bottom of both ends of the needle beam assembly (3), side molds (5) are arranged on the left and right sides of the beam frame assembly (1), a top mold (6) is arranged above the beam frame assembly (1), and a plurality of hydraulic cylinders (7) are fixedly installed on the outside of the beam frame assembly (1), characterized in that: The side mold (5) and the top mold (6) are supported and positioned by a hydraulic cylinder (7); travel transmission components (8) are arranged at the top of both ends of the needle beam assembly (3); and the travel transmission components (8) at both ends are arranged symmetrically with respect to the center; and a guardrail (9) is fixedly installed on the outer side of the travel transmission component (8) of the needle beam assembly (3); The area of ​​the needle beam assembly (3) surrounded by the guardrail (9) forms a workbench, and an electrical control system is provided at the workbench, and the hydraulic cylinder (7) is controlled by the electrical control system; the travel transmission assembly (8) includes a winch (10) fixedly mounted on the workbench, and the winch (10) is wound with a steel cable (11) through a winding roller, and a pulley seat (12) is fixedly mounted on the opposite side of the beam frame assembly (1) and the workbench, and the steel cable (11) passes through the pulley seat (12) in sequence, and the end of the steel cable (11) is fixedly mounted on the workbench.

2. The steel arch according to claim 1, characterized in that: The pulley seats (12) are provided with three groups on one side, and the three groups of pulley seats (12) opposite to each other on two sides are arranged in a staggered manner.

3. The steel arch according to claim 2, characterized in that: A vertical oil cylinder (13) is fixedly installed between the support (4) and the needle beam assembly (3), and the vertical oil cylinder (13) includes three oil cylinders, the oil cylinders on both sides are inclined at 60 degrees and are symmetrical to each other, and the vertical oil cylinder (13) is controlled by an electrical control system.

4. The steel arch according to claim 3, characterized in that: A mounting groove is provided in the middle of the top side of the support (4), a leveling oil cylinder (14) is arranged in the mounting groove, and the leveling oil cylinder (14) is controlled by an electrical control system.

5. The method for assembling a steel arch according to any one of claims 1 to 4 is as follows: S1. First, the needle beam assembly (3) is lifted by a crane and slid along the travel rail (2) to be installed in the beam frame assembly (1). Then, the support (4), the hydraulic cylinder (7) and the guardrail (9) are assembled in sequence. At this time, the support (4) is suspended and does not touch the ground, and the hydraulic cylinder (7) is used to support and position the side mold (5) and the top mold (6), so that the side mold (5) and the top mold (6) are circularly surrounded on the outside of the beam frame assembly (1), and the assembly of the steel mold trolley is completed. S2. When lining, first clean the tunnel, then roughen the construction joints and rinse with pressurized water; S3, then the inner wall of the tunnel is lined with steel bars, and the steel bars are tied tightly with pads, staggered and dispersed, and the steel bars are tied around the inner wall of the tunnel within a range of 240°, and four pouring positions of the lining trolley are advanced; S4, then the hydraulic cylinder (7) can be started to support the side mold (5) and the top mold (6), so that the side mold (5) and the top mold (6) are supported in a circular shape in the tunnel, and the mold erection operation is completed. Then, concrete can be pumped into the mold through a concrete delivery pump, and the concrete is vibrated by a vibrator to ensure that there are no bubbles and gaps in the concrete; S5. After the concrete solidifies, since the support (4) is suspended on the ground, when the rear winch (10) is started to reel in the steel cable (11), the needle beam assembly (3) is pulled to slide forward along the travel rail (2). At the same time, the hydraulic cylinder (7) is started to contract, causing the side mold (5) and the top mold (6) to separate from the concrete, thus completing the demolding operation. S6, and then the vertical oil cylinder (13) is started to drive the support (4) to contact the ground and lift the beam frame assembly (1) as a whole, the side mold (5) and the top mold (6) off the ground. At this time, the front winch (10) is started to pull the beam frame assembly (1) as a whole to move forward to the next casting position, thereby completing the travel operation of the trolley.

6. The method for assembling a steel arch according to claim 5, characterized in that: When moving to the next pouring position for lining pouring, fine adjustment can be performed by moving the vertical cylinder (13) up and down and the leveling cylinder (14) left and right.

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