Integral box culvert electric mold moving trolley and construction method thereof

Abstract

The invention relates to the technical field of engineering formwork trolleys, in particular to an integral box culvert electric formwork moving trolley and a construction method of the integral box culvert electric formwork moving trolley. The internal mold system is arranged in the box culvert and used for supporting and protecting the box culvert from the interior of the box culvert; the outer mold system is arranged outside the box culvert; the box culvert is supported and protected from the outside of the box culvert. The inner mold system comprises an inner mold trolley support, an inner mold walking mechanism, an inner mold plate and an inner mold fixing mechanism, the inner mold walking mechanism is used for driving the inner mold trolley support to do translational motion in the box culvert, the inner mold trolley support is used for supporting the inner mold fixing mechanism and the inner mold plate, and the inner mold fixing mechanism is used for fixing the inner mold plate to the inner wall of the box culvert; the trolley is provided with a top side formwork supporting system, the erecting procedure and time of a formwork support in a box chamber in traditional cast-in-place construction are optimized, the trolley is driven by a walking motor, the on-site assembling and disassembling time is shortened, and the box culvert construction period is shortened by 20%.

Description

Technical Field

[0001] The invention relates to the technical field of engineering formwork trolleys, and in particular to an integral box culvert electric formwork moving trolley and a construction method thereof. Background Art

[0002] With the rapid development of highway bridges and culverts, the process methods and appearance quality of the previous cast-in-place construction of box culverts and passages are difficult to meet higher requirements. The traditional construction methods are in urgent need of transformation and upgrading. Through innovative construction methods, formwork, support systems, concrete vibration, and appearance quality control methods, the construction of box culverts and passages will be more standardized and safer, and the physical quality and construction image of box culverts will be improved.

[0003] The existing prior art is: 1. Cast-in-place support construction technology: after the construction of the box bottom plate is completed, the side wall reinforcement is tied, the buckle support is set up, the I-beam, square timber, side formwork and top formwork are laid, the top plate reinforcement is tied, and concrete is poured. Due to the limitations of the traditional support construction method, there are many problems in the operation process, such as large workload of support installation and removal, many side wall tie rod holes, many template joints, and misalignment. Not only does it increase the safety hazards during the operation, but it is also difficult to ensure the appearance quality control, and there are many problems such as poor appearance quality; 2. Simple formwork trolley construction technology: The simple formwork trolley is connected by steel pipe columns to form a support frame, with walking wheels at the bottom, which moves the trolley and the formwork as a whole. There are also buckle brackets to build the support frame. After the construction is completed, the rolling steel pipe is placed at the bottom, and the frame is pulled by the chain to move to achieve the purpose of walking. The above methods have problems such as poor stability of the inner mold support frame, cumbersome installation and reinforcement, the presence of tie rod holes, surface misalignment, poor mobility, and no reliable outer mold system. The appearance quality of the box construction cannot be guaranteed.

[0004] After searching, Chinese Patent No. 201621053001.3 discloses a trolley for rectangular box culvert and tunnel construction, including a steel support (1) and a side plate formwork (3), wherein the side plate formwork (3) is connected to the steel support (1) through a lateral support rod (4), a reaction force slide (6) is arranged on the top of the steel support (1), one end of a transverse beam (5) is connected to the side plate formwork (3), and the other end is inserted into the reaction force slide (6), a transverse force device is arranged between the transverse beam (5) and the top of the steel support (1), and a vertical support screw (2) is arranged at the bottom of the steel support (1). The above patent has the following shortcomings: each time the mold is removed, the lateral support rod needs to be manually removed, and there are many times of demolding for box culverts such as tunnels, which makes the work intensity of the construction personnel relatively large.

[0005] The purpose of the invention in this application is to solve the problems of large workload in installation and disassembly of traditional box culvert and channel construction supports, many template joints, misalignment and leakage, low qualified rate of protective layer, etc. It aims to provide an integral electric mold transfer trolley with easy assembly, labor saving, precise mold adjustment, electric drive, high safety and high degree of standardization, so as to improve the overall standardized construction quality of box culverts. Summary of the invention

[0006] In view of the above-mentioned shortcomings of the prior art, the present invention provides an integral box culvert electric mold shifting trolley and a construction method thereof, which can effectively solve the existing problems.

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: The present invention provides an integral box culvert electric mold moving trolley, comprising a box culvert constructed with reinforced concrete box-shaped pipe sections; an inner mold system arranged inside the box culvert, used to support and protect the box culvert from the inside; and an outer mold system arranged outside the box culvert; used to support and protect the box culvert from the outside; the inner mold system comprises an inner mold trolley bracket, an inner mold walking mechanism, an inner mold template, and an inner mold fixing mechanism, the inner mold walking mechanism is used to drive the inner mold trolley bracket to perform translational movement inside the box culvert, the inner mold trolley bracket is used to support the inner mold fixing mechanism and the inner mold template, and the inner mold fixing mechanism is used to fix the inner mold template on the inner wall of the box culvert; the outer mold system comprises an outer mold fixing mechanism, an outer mold trolley bracket, an outer mold template, and an outer mold walking mechanism, the outer mold walking mechanism is used to drive the outer mold trolley bracket to move, the outer mold trolley bracket is used to support the outer mold template and the outer mold fixing mechanism, and the outer mold fixing mechanism is used to fix the outer mold template on the outer wall of the box culvert.

[0008] Furthermore, the inner mold walking mechanism includes two built-in steel rails laid on the ground and parallel to each other, a walking steel support is slidably connected to the built-in steel rails, a fixed rod is fixedly connected above the walking steel support, and a walking motor is also fixed on the fixed rod; the inner mold trolley bracket includes a vertical support rod fixed above the fixed rod, and the top and bottom between the two vertical support rods are respectively fixedly connected to transverse support rods; a reinforcing rod is fixedly connected between each transverse support rod and the vertical support rod.

[0009] Furthermore, the inner mold fixing mechanism is respectively arranged on the outer sides of the two vertical support rods and the top end of the upper transverse support rod. The inner mold plate includes a top mold plate located at the top, side mold plates located on both sides and side connecting plates located at the bottom of both sides. The bottom loose-leaf rigid mold, side mold plate and top mold plate are all composed of large steel mold plates hinged to each other. A top connecting plate is fixedly connected to the bottom of the top mold plate to form a fixed relationship with the inner mold fixing mechanism on the transverse support rod; a side connecting plate is fixedly connected to the side of the side connecting plate facing the inner mold trolley bracket, and a plurality of hinged columns are fixedly connected to the side connecting plate to form a fixed relationship with the inner mold fixing mechanism on the vertical support rod.

[0010] Furthermore, the inner mold fixing mechanism is a forward and reverse screw rod.

[0011] Furthermore, the inner mold fixing mechanism is a rigid lifting member.

[0012] Furthermore, the inner mold fixing mechanism located on the top connecting plate adopts positive and negative screw rods; and the inner mold fixing mechanism located on the upper transverse support rod adopts a rigid lifting piece.

[0013] Furthermore, the outer mold walking mechanism includes external steel rails laid on the ground and parallel to each other, a moving steel block is slidably connected to the external steel rails, a driving motor is fixedly connected to one side of the moving steel block, and the two motors are connected to a master control switch; the outer mold trolley bracket includes a vertical support rod fixed to the top of the moving steel block, a gate-type I-beam is fixedly connected to the top of the vertical support rod, a connecting plate is fixedly connected between two gate-type I-beams located on the same cross section, and reinforcing ribs are arranged on the gate-type I-beam; the outer mold plate is composed of large steel mold plates hinged to each other; the external mold fixing mechanism includes a positioning block fixed on the gate-type I-beam cross bar.

[0014] Furthermore, a lifting ring is provided above the outer template; and a lifting ring is fixedly connected to the top of the fixed template to form a fixed relationship with the hanging hook.

[0015] Furthermore, an electric push rod is fixedly connected to one side of the positioning block, a telescopic rod is fixedly connected to the output end of the electric push rod, and a steering gear box is fixedly connected to the bottom of the positioning block. The internal gears of the steering gear box are respectively transmission-connected to the first support clamping rod and the second support clamping rod, and the telescopic rod, the first support clamping rod and the second support clamping rod are all machined with racks that mesh with the gears; the electric push rod has an extended state and a shortened state; when the electric push rod is in the extended state, the telescopic rod moves downward, so that the gear transmission causes the second support clamping rod and the first support clamping rod to move away from each other and thus break away from the fixation to the fixed template; when the electric push rod is in the shortened state, the telescopic rod moves upward, so that the gear transmission causes the second support clamping rod and the first support clamping rod to approach each other and thus fix the fixed template.

[0016] A method for extracting an integral box culvert electric mold transfer trolley, comprising: S1: Lay inner and outer rails inside and outside the box culvert respectively, connect and fasten the transverse support rods, reinforcing rods and vertical support rods respectively by connecting steel plates + screws + steel washers, and connect and fasten the outer formwork and fixed formwork by connecting steel plates + screws + steel washers, and then set up the inner and outer formwork trolley brackets on the corresponding inner and outer rails; S2: driving the motor moving device to reach the designated position, adjusting and fixing the inner template through the inner template fixing mechanism so that it supports and protects the inner wall of the box culvert, and adjusting and fixing the outer template through the outer template fixing mechanism so that it supports and protects the outer wall of the box culvert; S3: After the demolding operation is completed, the inner mold fixing mechanism adjusts the inner mold plate, and the outer mold fixing mechanism adjusts the outer mold plate, so that the inner mold trolley bracket and the outer mold trolley bracket can be moved to the next position under the drive of the inner mold walking mechanism and the outer mold walking mechanism; S4: Repeat steps S2-S3 until the overall demoulding operation of the box culvert is completed.

[0017] Beneficial Effects Compared with the known public technology, the technical solution provided by the present invention has the following beneficial effects: (1) The trolley is equipped with a top and side formwork support system, which optimizes the process and time of erecting the indoor formwork support in the traditional cast-in-place construction. It uses a traveling motor drive to reduce the on-site assembly and disassembly time, shortening the box culvert construction period by 20%.

[0018] (2) The use of a standardized steel mold + lead screw adjustment support system facilitates the disassembly, reinforcement and adjustment of the template, greatly improving the construction accuracy of the template, and the steel guarantee qualification rate reaches more than 95%.

[0019] (3) The use of tie-rod-free construction with an integral formwork reduces the misalignment and slurry leakage between traditional bamboo plywood panels. At the same time, the use of an attached vibrator greatly improves the appearance quality of the box culvert.

[0020] (4) The use of electric mold transfer trolley construction technology reduces the input of manpower, formwork, square timber and other resources, achieving the effect of energy conservation, emission reduction and green environmental protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 It is an overall schematic diagram of the integrated box culvert electric mold transfer trolley of the present invention; Figure 2 It is a schematic diagram of the main structure of the integrated box culvert electric mold transfer trolley of the present invention; Figure 3 It is a schematic diagram of the inner mold trolley support structure of the integral box culvert electric mold transfer trolley of the present invention; Figure 4 It is a schematic diagram of the inner template structure of the present invention; Figure 5 It is a schematic diagram of the structure of the outer mold system of the present invention; Figure 6 It is a schematic diagram of the structure of the positioning block of the present invention; Figure 7 It is a schematic diagram of the structure of the outer mold fixing mechanism of the present invention; Figure 8 It is a schematic diagram of the internal structure of the steering gear box of the present invention.

[0023] Reference numerals 100-inner mold system; 110-inner mold trolley support; 111-lateral support rod; 112-reinforcement rod; 113-vertical support rod; 120-inner mold walking mechanism; 121-built-in steel rail; 122-walking steel support; 123-fixing rod; 130-inner mold plate; 131-top connecting plate; 132-side connecting plate; 133-bottom loose-leaf steel mold; 134-side mold plate; 135-top mold plate; 140-inner mold fixing mechanism; 141-positive and negative screw rods; 142-rigid lifting piece; 200-external mold system; 210-external mold fixing mechanism; 211-positioning block; 212-hanging hook; 213-vacuum suction cup; 214-electric push rod; 215-telescopic rod; 216-first supporting clamping rod; 217-steering gear box; 218-second supporting clamping rod; 220-external mold trolley bracket; 221-vertical load-bearing rod; 222-door type I-beam; 223-connecting plate; 230-external mold plate; 231-fixed mold plate; 232-lifting ring; 240-external mold walking mechanism; 241-external rail; 242-moving steel block; 300-Box culvert. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are 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.

[0025] The present invention will be further described below in conjunction with the embodiments.

[0026] Example: An integral box culvert electric mold transfer trolley, such as Figure 1-8As shown, it includes a box culvert 300 constructed with reinforced concrete box-shaped pipe segments, an inner mold system 100 arranged inside the box culvert 300, used to support and protect it from the inside of the box culvert 300; and an outer mold system 200 arranged outside the box culvert 300; used to support and protect it from the outside of the box culvert 300; Furthermore, the inner mold system 100 includes an inner mold trolley support 110, an inner mold walking mechanism 120, an inner mold template 130, and an inner mold fixing mechanism 140. The inner mold walking mechanism 120 is used to drive the inner mold trolley support 110 to perform translational movement inside the box culvert 300, the inner mold trolley support 110 is used to support the inner mold fixing mechanism 140 and the inner mold template 130, and the inner mold fixing mechanism 140 is used to fix the inner mold template 130 on the inner wall of the box culvert 300; specifically, the inner mold walking mechanism 120 includes two built-in rails 121 laid on the ground and parallel to each other, and a walking steel support 122 is slidably connected to the built-in rail 121, and the walking steel support 122 is above It is fixedly connected with a fixing rod 123, and a walking motor is also fixed on the fixing rod 123; the inner mold trolley bracket 110 includes a vertical support rod 113 fixed above the fixing rod 123, and the top and bottom between the two vertical support rods 113 are respectively fixedly connected with a transverse support rod 111, and each transverse support rod 111 is fixedly connected with the vertical support rod 113 with a reinforcing rod 112. It is worth noting that the inner mold trolley bracket 110 composed of the transverse support rod 111, the reinforcing rod 112, and the vertical support rod 113 has stability, and it can provide good support for the upper side and the left and right sides; the inner mold fixing mechanism 140 is respectively arranged on the two vertical support rods. The outer side of the support rod 113 and the top of the upper transverse support rod 111, the inner template 130 includes a top template 135 located at the top, side templates 134 located on both sides and side connecting plates 132 located at the bottom of both sides. The bottom loose-leaf steel mold 133, the side template 134 and the top template 135 are all composed of large steel templates hinged to each other. The top template 135 is fixedly connected to the top connecting plate 131 at the bottom, which is used to form a fixed relationship with the inner mold fixing mechanism 140 on the transverse support rod 111. The side connecting plate 132 is fixedly connected to the side of the inner mold trolley bracket 110, and the side connecting plate 132 is fixedly connected to the side connecting plate 132. There are multiple hinged columns connected to form a fixed relationship with the inner mold fixing mechanism 140 on the vertical support rod 113. It is worth noting that according to the construction difficulties such as the relatively simple traditional trolley, poor structural force performance, time-consuming and labor-intensive assembly, and poor mobility, the inner mold system 100 is optimized to meet the problems existing in the existing box culvert and channel construction methods. The inner mold trolley bracket 110 + inner mold walking mechanism 120 + inner template 130 + inner mold fixing mechanism 140 is combined with the force bearing system, and the bottom loose-leaf rigid mold 133 is added, and the inner template 130 is fixed by the inner mold fixing mechanism 140. The entire trolley is guaranteed to travel by a walking motor and a steel rail combination; Some specific solutions about the inner mold fixing mechanism 140: First, the inner mold fixing mechanism 140 adopts a positive and negative screw rod 141, which is a retractable screw that can be remotely controlled. The retractable end of the screw rod is processed with a hinged column, which is convenient for forming a fixed relationship with the inner mold plate 130, and the adjustment is convenient and quick; second, the inner mold fixing mechanism 140 adopts a rigid lifting member 142, which is a jack that can be remotely controlled. The structure is light and strong, flexible and reliable, and has more reliable supporting performance than the screw rod; third, the inner mold fixing mechanism 140 located on the top connecting plate 131 adopts a positive and negative screw rod 141, while the inner mold fixing mechanism 140 located on the upper transverse support rod 111 adopts The rigid lifting pieces 142 on the left and right sides only need to apply pressure to the inner template 130 to fix it, while the upper inner template 130 also needs to withstand its own gravity, so a stronger supporting performance is required; the third scheme adopted in this embodiment, in which the side template 134 is connected and reinforced by the positive and negative screw rods 141 set on the bottom loose-leaf rigid template 133, and the top template 135 is connected and reinforced by the rigid lifting pieces 142 set on the transverse support rod 111, and the size adjustment and reinforcement of the templates at various locations can be connected and reinforced by the positive and negative screw rods 141 and the rigid lifting pieces 142 to ensure consistency with the size of the design drawing.

[0027] Furthermore, the outer mold system 200 includes an outer mold fixing mechanism 210, an outer mold trolley support 220, an outer mold plate 230 and an outer mold walking mechanism 240, the outer mold walking mechanism 240 is used to drive the outer mold trolley support 220 to move, the outer mold trolley support 220 is used to support the outer mold plate 230 and the outer mold fixing mechanism 210, and the outer mold fixing mechanism 210 is used to fix the outer mold plate 230 on the outer wall of the box culvert 300. Specifically, the outer mold walking mechanism 240 includes external rails 210 and 220 parallel to each other laid on the ground. 41, a moving steel block 242 is slidably connected to the external steel rail 241, and a driving motor is fixedly connected to one side of the moving steel block 242. The two motors are connected to a master control switch. After turning on, the two motors work simultaneously and move forward to the specified position at a speed of 15m / min; the external mold trolley bracket 220 includes a vertical support rod 221 fixed to the top of the moving steel block 242, and a gate-shaped I-beam 222 is fixedly connected to the top of the vertical support rod 221. The two gate-shaped I-beams 222 located on the same cross section are fixed between them. The same connecting plate 223 is connected, and a reinforcing rib is arranged on the gate-shaped I-beam 222. The connecting plate 223 and the reinforcing rib make the vertical support rods 221 on both sides of the box culvert 300 move synchronously to ensure the stability of the device operation; the outer template 230 is composed of large steel templates hinged to each other, and a lifting ring 232 is arranged above the outer template 230 to form a fixed relationship with the outer template fixing mechanism 210. The outer template fixing mechanism 210 includes a positioning block 211 fixed on the cross bar of the gate-shaped I-beam 222, and the positioning block 211 is fixed on the cross bar of the gate-shaped I-beam 222. 11 A hanging hook 212 is arranged at the bottom, and a hanging ring 232 is fixedly connected to the top of the fixed formwork 231 to form a fixed relationship with the hanging hook 212; it should be noted that the construction methods of the outer formwork of the box culvert and the side wall of the channel mainly include a combination of bamboo plywood + square wood + steel pipe + tie rod and a large steel formwork upright + tie rod. The wooden formwork system has the problems of many joints of the bamboo plywood, misalignment, bulging formwork, many tie holes, and a large workload for formwork installation and removal. The large steel formwork system has the problems of difficult formwork installation, poor adjustability, and poor mobility.The present invention arranges a movable steel block 242 on the basis of the box culvert as a walking device of the outer formwork fixing mechanism 210, and installs an assembleable gate-type I-beam 222 thereon, and fixes the outer formwork 230 by cooperating with the hanging hook 212 and the hanging ring 232, so as to play the role of hanging walking and adjusting the formwork installation; at the same time, the box culvert and the channel wall formwork are mostly fixed with reserved tension holes, and tension rods are set for tensioning and fixing. There are quality defects such as water seepage and leakage at the tension rod holes. At the same time, for the situation that the side wall height is high and the bottom chamfered steel bars are dense, there may be appearance quality defects such as rotten roots at the bottom of the wall and insufficient vibration. According to the existing box culvert and channel formwork installation process, it is proposed to replace the traditional bamboo plywood wooden formwork with a large steel formwork with high rigidity to reduce the occurrence of joints and misalignment. The reinforcement adopts the form of pre-buried tension rods at the bottom and full-length tension at the top, which eliminates the generation of wall tension rod holes and avoids the workload of post-processing of leakage of tension rod holes. At the same time, an attached vibrator is used in combination with a vibrator rod to improve the concrete vibration effect.

[0028] In order to ensure that the device can still stably support the box culvert 300 in a harsh environment such as windy weather, the hanging hook 212 can be replaced with a vacuum suction cup 213, and then the ring 232 on the fixed template 231 can be removed, and the fixed template 231 is adsorbed by the vacuum suction cup 213 to ensure that it always supports and protects the outer wall of the box culvert 300. The hanging hook 212 will cause its chain to sway in windy weather, resulting in unstable clamping of the outer template 230, affecting its support and protection effect on the box culvert 300; Furthermore, since the vacuum suction cup 213 itself has a high cost and is easily damaged in a construction environment, for cost considerations, the following solution can also be considered: an electric push rod 214 is fixedly connected to one side of the positioning block 211, and a telescopic rod 215 is fixedly connected to the output end of the electric push rod 214. A steering gear box 217 is fixedly connected to the bottom of the positioning block 211. The internal gears of the steering gear box 217 are respectively connected to the first support clamping rod 216 and the second support clamping rod 218. The telescopic rod 215, the first support clamping rod 216 and the second support clamping rod 218 are all processed with racks that mesh with the gears; the electric push rod 214 has an extended state and a retracted state. In the short state, when the electric push rod 214 is in the extended state, the telescopic rod 215 moves downward, so that the gear transmission causes the second support clamp rod 218 and the first support clamp rod 216 to move away from each other and thus break away from the fixation of the fixed template 231. When the electric push rod 214 is in the shortened state, the telescopic rod 215 moves upward, so that the gear transmission causes the second support clamp rod 218 and the first support clamp rod 216 to move closer to each other and thus fix the fixed template 231. Through the above scheme, the fixed template 231 can be fixed by the electric push rod 214, the cost is low, and it will not be affected by the reinforcing ribs of the gate-type I-beam 222, providing practicality of the device.

[0029] The specific solutions combined with the actual situation are as follows: It consists of a large steel template + inner template fixing mechanism 140 + inner template trolley bracket 110, the total length of the inner template is 6.5m, the horizontal support rod 111, the reinforcement rod 112, and the vertical support rod 113 are 18# I-beams, and each part is connected and fastened by connecting steel plates + screws + steel washers; In order to better adapt to the trolley construction, the box culvert steel formwork is designed in blocks, which are composed of bottom loose-leaf rigid formwork 133, side formwork 134 and top formwork 135. The formworks are connected by hinges, and 18# I-beams are welded on the main channel steel of the steel formwork to support the connection between the formwork and the steel truss. The vertical support rod 221 is made of 40# double channel steel, and one is set at an interval of 1.85m. A gate-shaped I-beam 222 is set on the vertical support rod 221. The upper steel truss is connected to each other through two sections of 20# channel steel cross beams, 20# channel steel vertical rods and 16# channel steel diagonal braces and installed on the top steel plate of the vertical support rod, forming an external mold trolley support frame connected to the longitudinal beam and placed on the rail; The lifting ring 232 on the fixed formwork 231 is connected to the hanging hook 212 through the lifting ring 232, which plays the role of hanging walking and adjusting the installation position of the formwork. The upper end of the fixed formwork is pulled by the vertical support rod 221 through the length of the higher part. The bottom plate chamfer is 2-3cm lower and embedded steel bars are set for fixing the bottom of the outer formwork, thereby realizing the side wall tie rod-free design; Dongtai to Xinghua Expressway DX-DT2 section is located in Dongtai City, Yancheng City, Jiangsu Province. There are 19 box culverts and 9 channels in the section. The apertures are 1-6.0×4.0m, 1-8.0×4.0m, 1-4.0×3.0m, 1-2.5×2.2m, 1-6.0×3.5m, 1-4.0×2.2m, totaling 998.87 linear meters. In the construction of the box culvert channel, this integral box culvert electric mold transfer trolley was used to effectively improve the construction production efficiency, save resource investment, reduce the intensity of manual work, and the qualified rate of the steel bar protective layer reached more than 95%, the qualified rate of quality inspection was 100%, and the construction period was saved by 15 days.

[0030] A construction method for an integral box culvert electric mold shifting trolley, comprising: S1: Lay inner rails 121 and outer rails 241 inside and outside the box culvert 300 respectively, connect and fasten the transverse support rods 111, the reinforcing rods 112, and the vertical support rods 113 respectively by connecting steel plates + screws + steel washers, and connect and fasten the outer formwork 230 and the fixed formwork 231 by connecting steel plates + screws + steel washers, and then set the inner mold trolley bracket 110 and the outer mold trolley bracket 220 on the corresponding inner rails 121 and outer rails 241; S2: The motor moving device is driven to reach the designated position, and the inner mold fixing mechanism 140 adjusts and fixes the inner mold plate 130 so that it supports and protects the inner wall of the box culvert 300, and the outer mold fixing mechanism 210 adjusts and fixes the outer mold plate 230 so that it supports and protects the outer wall of the box culvert 300; S3: After the demolding operation is completed, the inner mold fixing mechanism 140 adjusts the inner mold plate 130, and the outer mold fixing mechanism 210 adjusts the outer mold plate 230, so that the inner mold trolley support 110 and the outer mold trolley support 220 can be moved to the next position under the drive of the inner mold walking mechanism 120 and the outer mold walking mechanism 240; S4: Repeat steps S2-S3 until the overall demoulding operation of the box culvert 300 is completed.

[0031] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. An integrated box culvert electric mold transfer trolley, characterized in that: include: Box culvert constructed with reinforced concrete box pipe sections (300); An inner mold system (100) disposed inside the box culvert (300) and used to support and protect the box culvert (300) from inside the box culvert; and an external mold system (200) arranged outside the box culvert (300), used to support and protect the box culvert (300) from the outside; The inner mold system (100) comprises an inner mold trolley support (110), an inner mold walking mechanism (120), an inner mold plate (130), and an inner mold fixing mechanism (140); the inner mold walking mechanism (120) is used to drive the inner mold trolley support (110) to perform translational movement inside the box culvert (300); the inner mold trolley support (110) is used to support the inner mold fixing mechanism (140) and the inner mold plate (130); and the inner mold fixing mechanism (140) is used to fix the inner mold plate (130) on the inner wall of the box culvert (300); The outer mold system (200) comprises an outer mold fixing mechanism (210), an outer mold trolley support (220), an outer mold plate (230), and an outer mold walking mechanism (240); the outer mold walking mechanism (240) is used to drive the outer mold trolley support (220) to move; the outer mold trolley support (220) is used to support the outer mold plate (230) and the outer mold fixing mechanism (210); and the outer mold fixing mechanism (210) is used to fix the outer mold plate (230) on the outer wall of the box culvert (300).

2. The electric mold transfer trolley for an integrated box culvert according to claim 1 is characterized in that: The inner mold walking mechanism (120) comprises two inner steel rails (121) laid on the ground and parallel to each other, a walking steel support (122) being slidably connected to the inner steel rails (121), a fixing rod (123) being fixedly connected above the walking steel support (122), and a walking motor being fixed to the fixing rod (123); the inner mold trolley support (110) comprises a vertical support rod (113) fixed above the fixing rod (123), and a transverse support rod (111) being fixedly connected to the top and bottom between the two vertical support rods (113); A reinforcing rod (112) is fixedly connected between each transverse support rod (111) and the vertical support rod (113).

3. The electric mold transfer trolley for an integrated box culvert according to claim 2 is characterized in that: The inner mold fixing mechanism (140) is respectively arranged on the outside of the two vertical support rods (113) and on the top of the upper transverse support rod (111); the inner mold plate (130) comprises a top mold plate (135) located at the top, side mold plates (134) located at both sides, and side connecting plates (132) located at the bottom of both sides; the bottom loose-leaf steel mold plate (133), the side mold plates (134) and the top mold plate (135) are all composed of large steel mold plates hinged to each other; the top mold plate (135) is fixedly connected to the top connecting plate (131) at the bottom to form a fixed relationship with the inner mold fixing mechanism (140) on the transverse support rod (111); The side connecting plate (132) is fixedly connected to the side facing the inner mold trolley support (110), and a plurality of hinged columns are fixedly connected to the side connecting plate (132) for connecting with the inner mold fixing mechanism (140) on the vertical support rod (113) to form a fixed relationship.

4. The integrated box culvert electric mold transfer trolley according to claim 3 is characterized in that: The inner mold fixing mechanism (140) is a forward and reverse screw rod (141).

5. The electric mold transfer trolley for an integral box culvert according to claim 3 is characterized in that: The inner mold fixing mechanism (140) is a rigid lifting member (142).

6. The integrated box culvert electric mold transfer trolley according to claim 3, characterized in that: The inner mold fixing mechanism (140) located on the top connecting plate (131) adopts positive and negative screw rods (141); The inner mold fixing mechanism (140) located on the upper transverse support rod (111) adopts a rigid lifting member (142).

7. The integrated box culvert electric mold transfer trolley according to any one of claims 4, 5 and 6, characterized in that: The outer mold walking mechanism (240) comprises external steel rails (241) laid on the ground and parallel to each other, a moving steel block (242) is slidably connected to the external steel rails (241), a driving motor is fixedly connected to one side of the moving steel block (242), and the two motors are connected to a master control switch; The outer mold trolley support (220) comprises a vertical support rod (221) fixed to the top of the movable steel block (242); a gate-shaped I-beam (222) is fixedly connected to the top of the vertical support rod (221); a connecting plate (223) is fixedly connected between two gate-shaped I-beams (222) located on the same cross section; and reinforcing ribs are provided on the gate-shaped I-beams (222); the outer mold plate (230) is composed of large steel mold plates hinged to each other; The outer mold fixing mechanism (210) comprises a locking block (211) fixed on a crossbar of a gate-shaped I-beam (222).

8. The integrated box culvert electric mold transfer trolley according to claim 7, characterized in that: A lifting ring (232) is provided above the outer template (230); A hanging ring (232) is fixedly connected to the top of the fixed template (231) and is used to form a fixed relationship with the hanging barb (212).

9. The electric mold transfer trolley for an integral box culvert according to claim 7, characterized in that: One side of the positioning block (211) is fixedly connected to an electric push rod (214), the output end of the electric push rod (214) is fixedly connected to a telescopic rod (215), the bottom of the positioning block (211) is fixedly connected to a steering gear box (217), the internal gears of the steering gear box (217) are respectively transmission-connected to a first support clamping rod (216) and a second support clamping rod (218), and the telescopic rod (215), the first support clamping rod (216) and the second support clamping rod (218) are all machined with racks that mesh with the gears; The electric push rod (214) has an extended state and a shortened state; When the electric push rod (214) is in an extended state, the telescopic rod (215) moves downward, so that the gear transmission causes the second support clamping rod (218) and the first support clamping rod (216) to move away from each other and thus break away from the fixation of the fixed template (231); When the electric push rod (214) is in a shortened state, the telescopic rod (215) moves upward, so that the gear transmission causes the second support clamping rod (218) and the first support clamping rod (216) to approach each other, thereby fixing the fixed template (231).

10. A construction method for an integral box culvert electric mold transfer trolley, using the integral box culvert electric mold transfer trolley as claimed in any one of claims 8 and 9, characterized in that: include: S1: laying inner steel rails (121) and outer steel rails (241) inside and outside the box culvert (300), respectively, connecting and fastening the transverse support rods (111), the reinforcing rods (112), and the vertical support rods (113) by connecting steel plates + screws + steel washers, and connecting and fastening the outer formwork (230) and the fixed formwork (231) by connecting steel plates + screws + steel washers, and then setting the inner mold trolley bracket (110) and the outer mold trolley bracket (220) on the corresponding inner steel rails (121) and the outer steel rails (241); S2: driving the motor moving device to reach a designated position, adjusting and fixing the inner template (130) through the inner template fixing mechanism (140) so that it supports and protects the inner wall of the box culvert (300), and adjusting and fixing the outer template (230) through the outer template fixing mechanism (210) so that it supports and protects the outer wall of the box culvert (300); S3: After the demoulding operation is completed, the inner mold fixing mechanism (140) adjusts the inner mold plate (130), and the outer mold fixing mechanism (210) adjusts the outer mold plate (230), so that the inner mold trolley support (110) and the outer mold trolley support (220) can be moved to the next position under the drive of the inner mold walking mechanism (120) and the outer mold walking mechanism (240); S4: Repeat steps S2-S3 until the overall demoulding operation of the box culvert (300) is completed.

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