[0054] In the following description, many specific details are explained in order to fully understand the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.
[0055] In the following, specific embodiments of the present invention will be described with reference to the accompanying drawings.
[0056] See Figure 1 to 4 As shown, the present invention provides a hydraulic self-moving steel form trolley and a construction method thereof. The hydraulic self-moving steel form trolley can meet the construction requirements of full-section circular tunnel concrete lining, including simple structure and convenient installation , Strong adaptability, can demould the concrete at the bottom of the tunnel in advance and can repair concrete construction defects in time.
[0057] As attached Figure 1-4 As shown, the hydraulic self-moving steel mold trolley of the present invention mainly includes a trolley moving device, a trolley structure frame, a steel structure combined template and a hydraulic control device, and the trolley structure frame is set on the trolley On the mobile device, the trolley structure frame is movably connected with the trolley moving device, the steel structure composite template is arranged in the trolley structure frame, and the steel structure composite template and the trolley structure frame are Hinge connection, the hydraulic control device is used to control the hydraulic self-moving steel mold trolley.
[0058] A trolley moving device, the trolley moving device includes a front wheel track 32, a rear middle wheel tool track 5 and a support device, the trolley front wheel 33, the front wheel support 8, the trolley rear wheel 4, and the hydraulic rail climber 9 And front and rear support frames, the support device is connected to the trolley structure frame as a whole, the hydraulic rail climber 9 is fixed on the front wheel rail 32 and connected with the trolley structure frame, the hydraulic climbing The rail 9 is controlled by a hydraulic control device.
[0059] The front wheel rail 32 is supported by a rail support 31. The front wheel guide rail 32 is generally a 24KG/M steel rail double-track arrangement, and is fixed on the tunnel floor with insert bars and section steel. The front wheel rail 32 can be used for binding The steel bar installation trolley rails of the full-section circular structural steel bar of the tunnel are shared, saving process time, and the use of the rail type can ensure stable walking and improve safety and reliability.
[0060] The rear middle wheel tool track 5 floats on the concrete base plate that has to be strengthened, and is generally manufactured in sections with a 38KG/M steel rail monorail. The length of the single section is about 3 meters, and it is used in turnover.
[0061] The front wheel 33 of the trolley is made of steel casting, matched with the front wheel track 32, and is arranged on both sides of two wheels.
[0062] The rear wheel 4 is also cast, and runs on the tool track 5 of the rear middle wheel.
[0063] The supporting device includes a front wheel support 8 and a rear wheel support 3. Both the front wheel support 8 and the rear wheel support 3 are made of section steel and are connected to the trolley structure frame as a whole and are arranged in the The two ends of the hydraulic self-moving steel mold trolley are described.
[0064] The hydraulic rail climber 9 is fixed on the front wheel rail 32, and the rail climber cylinder 10 is connected to the hydraulic self-moving steel mold trolley. The hydraulic rail climber 9 is controlled by a centralized hydraulic console. Drive the rail climber cylinder 10 to sequentially complete the movement of the trolley.
[0065] The trolley structure frame includes a steel structure frame, a center column beam 1 and a supporting connection device, the steel structure frame is a portal frame, and the center column beam 1 and the supporting connection device are arranged on the steel The inside of the structural frame is used to support the steel structure frame.
[0066] The inside of the steel frame can be hollow, hollow or support frame, preferably hollow channel type, so that personnel, equipment, and materials can pass through during construction, which facilitates parallel operations between different tunnels and improves work efficiency. Moreover, a working platform or walkway is provided at the inlet 30 of the steel structure frame, and the working platform or walkway leads from the front end to the back end of the trolley structure frame. On the one hand, it is used to improve the hydraulic pressure. The movable steel mold trolley is convenient for the passage of personnel and materials during construction; on the other hand, it can be beneficial to the parallel operation of other processes and improve the work efficiency of the hydraulic self-moving steel mold trolley. In addition, in order to facilitate the demolding of the bottom mold 16, sufficient demolding space is reserved at the bottom of the door frame to ensure that personnel can enter smoothly to repair the bottom concrete defects after the bottom plate is demolded.
[0067] The steel structure combined template consists of a top mold 24, a bottom mold 16 and two side molds 12. The four templates are welded into standard modules with steel plate ribbed plates to facilitate installation and removal. The top mold 24 and the two side molds 12 are hingedly connected by a top mold and a side mold hinged ear 21. The top mold 24, the bottom mold 16 and the two side molds 12 pass through the side mold steel structure through the beam 13, the side mold The cylinder hinge seat 14, the bottom mold steel structure through beam 18, and the top mold through beam 26 are integrated with the trolley structure frame to form four independent formwork beams. The formwork beam and the trolley structure frame are then Through the hinged connection with the hydraulic system, the functions of fixing, positioning and demoulding are achieved. A certain number of concrete inlets 30 are left on both sides of the formwork 12, which is convenient for observation, feeding and vibrating during the construction process. 24 Reserve a concrete plugging hole 2 for feeding, exhausting, vibrating and other operations. Similarly, part of the bottom mold 16 should also be reserved for exhausting holes for exhausting and vibrating.
[0068] The top mold bracket 25 is connected to the top mold cylinder 22 through the top mold through beam 26, and the working principle is the same on both sides, and is used to support the top mold 24.
[0069] The bottom mold connecting bracket 17 is connected to the bottom mold cylinder 7 through the bottom mold through beam 18 for supporting the bottom mold 16.
[0070] The bottom mold 16 is set to be capable of demolding first, and the bottom space after demolding can accommodate personnel to repair the defects of the bottom concrete construction, so that the construction quality is guaranteed.
[0071] Hydraulic control device, the hydraulic control device includes hydraulic side mold cylinder 15, top mold cylinder 22, bottom mold cylinder 7, hydraulic rail climber cylinder 10, hydraulic jacks 28 and 29, connecting tubing and hydraulic console.
[0072] The hydraulic jack 29 is controlled by a translation mechanism 27 connected to the top die through beam 26. The working principle of the hydraulic jack 28 is the same as that of the hydraulic jack 29.
[0073] The number of hydraulic cylinders, the number of jacks, and the tonnage can be set according to the length, diameter, and structural type of different hydraulic self-moving steel mold trolleys.
[0074] The hydraulic control console is a special equipment, installed at the end of the hydraulic self-moving steel mold trolley, connected with each hydraulic cylinder and each jack by the hydraulic oil pipe, and is automatically controlled by a computer to realize the hydraulic automatic control of the present invention. The movable steel mold trolley has the functions of moving, walking, lifting, leveling, supporting, adjusting, fixing and demolding.
[0075] The length of the hydraulic self-moving steel mold trolley of the present invention can be determined according to the length of the tunnel lining pouring section, generally shorter, preferably 10-16 meters, can be made into a segmented modular type, and adjusted according to the length of the tunnel. , Not only can meet the requirements of tunnel turning, but also is not restricted by the assembly site, and the weight is relatively small, so the cost is relatively low, and installation and removal are very convenient.
[0076] In addition, the hydraulic self-moving steel mold trolley of the present invention can be assembled outside the hole or inside the hole, and the hydraulic rail climber 9 is used to walk along the laid track. In order to enable the hydraulic self-moving steel mold trolley of the present invention to adapt to the turning requirements of the tunnel with different curvatures, the turning requirements of the steel mold trolley must be fully considered during the design and manufacture, and its modulus can be adjusted if necessary to make it It can be freely disassembled and assembled when needed to meet the needs of turning tunnels with different curvature radii.
[0077] Next, the construction method of the hydraulic self-moving steel mold trolley of the present invention will be described in detail:
[0078] The hydraulic self-moving steel mold trolley is assembled at the predetermined assembly site, and the acceptance is qualified, and the trial operation is carried out to test whether each system is operating normally;
[0079] Install the trolley front wheel rail 32, the support 31, the rear middle wheel tool rail 5, and the rear middle wheel 4, and use the steel bar installation trolley to bind the tunnel full-section circular structural steel bars;
[0080] Install the hydraulic rail climber 9 and the rail climber cylinder 10, the trolley is pulled by the hydraulic rail climber 9 to the concrete pouring section, the front wheel 33 of the trolley runs on the installed track 32, and the rear middle wheel 4 is behind the artificially laid The middle wheel tool track 5 travels, and the rear auxiliary wheel 19 travels on the concrete surface of the bottom plate;
[0081] After the trolley is in place, remove a section of the mold-length track at the bottom of the trolley. The trolley templates 12, 16, 24 are controlled by hydraulic cylinders 7, 15, and 22 driven by hydraulic control devices. The top mold is supported by hydraulic jacks in the order of first supporting the top mold 24, then supporting the side mold 12, and rear supporting the bottom mold 16. Design height. After the two sides of the template and the bottom plate are supported in place, install the side mold positioning screw 20 and the bottom mold positioning screw 11, adjust the template to the design specification size and position, and install the end water stop and stop template;
[0082] Erection of concrete pumps and pump pipes: When concrete is poured on both sides, the concrete pump pipes are connected to the warehouse number from the inlet holes 30 reserved on both sides, and the concrete is poured in layers in order. After the concrete is poured to the top arch, the pump pipes Connect to the warehouse number from the plugging hole 2 of the top arch, and finally plug it to complete a cycle of concrete pouring;
[0083] When the strength of the bottom plate concrete reaches 1/4 of the design strength (before the initial setting of the concrete), use the bottom mold cylinder 7 and the bottom mold jack system 6 to demold the bottom mold; Figure 4 As shown, personnel enter to check the quality of concrete, repair concrete defects and maintain them in time as required before the initial setting of the concrete;
[0084] After the concrete reaches the demolding strength, remove the plug template, remove the side mold positioning screw 20, and demould all in the order of first demolding the side mold 12 and then the top mold 24;
[0085] Use the steel bars to install the trolley track 32 and the rear middle wheel tool track 5, and use the hydraulic rail climber 9 to pull the trolley to the next position, and then proceed to the next cycle of construction in the upper order; complete the entire tunnel section in turn Concrete lining.
[0086] The advantages that can be obtained by using the hydraulic self-moving steel mold trolley of the present invention are:
[0087] 1. Because the hydraulic self-moving steel mold trolley of the present invention is a track-walking type, the installation and removal positions are relatively flexible; and because the hydraulic rail climber is used for pulling, it is very convenient to move. Move to the next position in a short time; in addition, it adopts full hydraulic centralized control, convenient construction operation, and can quickly realize the construction process of trolley movement, positioning, fixing, construction, demoulding, etc.
[0088] 2. The demoulding of the hydraulic self-moving steel form trolley of the present invention conforms to the law of concrete strength pouring. The bottom form is first demolished, the side form is demolished, and the top form is finally demolded; especially the bottom mold has a large demoulding space and can be demolded in advance. After demoulding, personnel can enter in time to check the quality of the concrete lining, quickly and promptly deal with the bottom concrete defects, and can be cured in time;
[0089] 3. The hydraulic self-moving steel mold trolley of the present invention and the steel bar installation trolley share the track, the trolley has high construction accuracy, the quality of steel bar binding is guaranteed, and the construction speed can be effectively improved;
[0090] 4. The hydraulic self-moving steel mold trolley of the present invention is designed as a hollow structure, and the construction channel can be arranged in the middle to facilitate the passage of personnel, construction materials, and tools; it is beneficial to parallel operation of other processes;
[0091] 5. The hydraulic self-moving steel mold trolley of the present invention is relatively small, only 2-3 meters longer than the lining mold. Not only can it meet the requirements of tunnel turning, but it also weighs more than the needle beam steel mold platform of the same specification tunnel The car has been reduced by nearly half, and the manufacturing and installation costs have been greatly reduced.
[0092] The above-mentioned embodiments are used to exemplify the principles and effects of the present invention, but the present invention is not limited to the above-mentioned embodiments. Those skilled in the art can modify the above-mentioned embodiments within the protection scope of the claims without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention should be covered by the claims of the present invention.
