An integrated prefabricated box culvert automated production system and production method thereof

Abstract

The present invention discloses an integrated prefabricated box culvert automated production system and a production method thereof, the production system comprising: a pouring production line, a steaming curing line, a mold transport device and a control system; the pouring production line and the steaming curing line are arranged in parallel, the mold transport device is arranged at both ends of the pouring production line and the steaming curing line, and the mold transport device completes the circulation of the integrated prefabricated box culvert and its mold between the pouring production line and the steaming curing line; the control system is connected with the pouring production line, the steaming curing line and the mold transport device through electrical signals for overall regulation. The present invention provides an automated production system and a production method thereof with a high degree of automation and independent maintenance conditions, which improves the mechanization and technological degree of prefabricated box culvert production, reduces labor input, improves labor productivity, and stabilizes and improves product quality to a certain extent.

Description

Technical Field

[0001] The present invention relates to the technical field of integral prefabricated box culvert production, in particular to the technology of integral prefabricated box culvert production for shield tunnels, and specifically to an integral prefabricated box culvert automated production system and a production method thereof. Background Art

[0002] At present, the domestic production process of integral prefabricated box culverts is mainly the fixed pedestal method. The fixed pedestal method is a relatively traditional production method. The main processes still rely on traditional manual construction methods. During maintenance, it is also carried out by covering with tarpaulin and introducing steam. The transportation between each process is mostly carried out by lifting equipment. The human participation is high, and the continuity and automation between each process are low. In particular, a coherent automated production line cannot be formed between the various processes of pouring production and between pouring and maintenance. In view of this situation, it is urgent to develop an automated production line with a high degree of automation and independent maintenance conditions to improve the mechanization and technological level of prefabricated box culvert production, reduce labor input, improve labor productivity, and stabilize and improve product quality to a certain extent. Summary of the invention

[0003] The purpose of the present invention is to provide an integrated prefabricated box culvert automated production system and a production method thereof, in order to solve the above-mentioned problems of the prior art. The purpose of the present invention is achieved through the following technical solutions:

[0004] An integrated prefabricated box culvert automated production system comprises: a pouring production line, a steaming curing line, a mold transporting device and a control system; the pouring production line and the steaming curing line are arranged in parallel, and the steaming curing line is arranged as one or two parallel lines; the mold transporting device is arranged at both ends of the pouring production line and the steaming curing line, and the mold transporting device completes the circulation of the integrated prefabricated box culvert and its mold between the pouring production line and the steaming curing line; the control system is connected to the pouring production line, the steaming curing line and the mold transporting device through electrical signals. The casting production line is used for casting and producing integral prefabricated box culverts and performing static maintenance and finishing operations on the integral prefabricated box culvert; the casting production line includes a demoulding station, a mold cleaning and spraying station, a steel cage mold entering station, a mold closing station, a casting and vibrating station, a static station and a finishing station which are arranged in sequence; a plurality of groups of rollers are symmetrically and fixedly arranged on both sides of the casting production line, and the rollers are in contact with the bottom of the integral prefabricated box culvert mold; a hydraulic jacking system is arranged below the casting production line, and the hydraulic jacking system includes a hydraulic cylinder and a propeller connected to the cylinder, and the cylinder drives the propeller to push the integral prefabricated box culvert mold forward, and supports and slides through rollers, so that the integral prefabricated box culvert mold on the casting production line is moved from one station to the next station. The steaming and curing line is used to steam-cure the integral prefabricated box culvert transported by the casting production line; the steaming and curing line is composed of a plurality of independent steam curing kilns arranged in sequence, each independent steam curing kiln is provided with an exit and an entrance, and both the exit and the entrance are provided with electric rolling shutter doors, the exit of the previous independent steam curing kiln corresponds to the entrance of the next independent steam curing kiln; each independent steam curing kiln is provided with a set of independent temperature sensors and solenoid valves, which can independently control the temperature in the kiln, each independent steam curing kiln is provided with mold running tracks and steel pier supports on both sides, and adjacent independent steam curing kilns are connected through mold running tracks. The mold transport device is a mother-and-child trolley, including a mother trolley and a child trolley arranged on the mother trolley. The mother trolley is ferried between the end of the steaming and curing line and the production pouring line. The child trolley is provided with a hydraulic lifting system. The child trolley can lift the integral prefabricated box culvert mold by the hydraulic lifting system and move along the mold running track in the steaming and curing line to move the integral prefabricated box culvert mold into or out of the independent steam curing kiln.

[0005] For further optimization of the rollers, the spacing between each group of rollers is equal, and the bottom of each integral prefabricated box culvert mold contacts more than three groups of rollers; each group of rollers has two and is symmetrically fixed on both sides of the casting production line, and the spacing between the two symmetrical rollers in the same group is less than the width of the integral prefabricated box culvert mold.

[0006] For further optimization of the hydraulic jacking system, the pushing direction of the hydraulic cylinder is consistent with the running direction of the casting production line. The thruster includes a moving trolley connected to the hydraulic cylinder and a push rod rotatably connected to the moving trolley. The moving trolley is parallel to the casting production line. When the hydraulic cylinder extends and drives the thruster to extend, the push rod rotates to be perpendicular to the moving trolley to push the integral prefabricated box culvert mold to move. When the hydraulic cylinder contracts and drives the thruster to return to the origin, the push rod rotates to be parallel to the moving trolley.

[0007] Furthermore, a braking and positioning device is provided on the left side of each workstation of the casting production line to prevent the mold from passing by inertia.

[0008] As for the mold, the mold circulating on the casting production line is a multi-layer structure, which includes, from bottom to top, a mold base plate, an outer mold moving track, and a mold body; the mold base plate is a rectangular truss, and an outer mold moving track extending outward is fixed to the upper part of the mold base plate; the mold body includes an inner and outer layer, namely an outer mold and an inner mold arranged in the outer mold, and the outer mold can move on the mold base plate along the outer mold moving track, and the moving direction is perpendicular to the casting production line.

[0009] Furthermore, a walking path for construction workers is arranged on the top periphery of the outer mold, and the walking path is connected with a downward walking ladder directly reaching the bottom of the mold.

[0010] Furthermore, the automatic material distribution equipment on the casting production line is a multi-layer structure, which includes a mold material distribution hopper, a low hopper, and a high hopper from bottom to top.

[0011] An integrated prefabricated box culvert automated production method, using the integrated prefabricated box culvert automated production system, comprises the following steps:

[0012] S1. Automatic demoulding operation is performed on the demoulding station of the casting production line to obtain finished integral prefabricated box culverts and integral prefabricated box culvert molds;

[0013] S2. The integral prefabricated box culvert mold enters the casting production line and, driven by the hydraulic jacking system, flows from the right end to the left end of the casting production line and is supported by rollers disposed on both sides of the casting production line;

[0014] S3. Under the control of the control system, the integral prefabricated box culvert mold performs related process operations at the corresponding station on the casting production line using corresponding supporting equipment to complete the production of the integral prefabricated box culvert;

[0015] S4. When the integral prefabricated box culvert mold is transferred to the left end of the pouring production line, the sub-trolley moves to the lower left end of the pouring production line, lifts up the integral prefabricated box culvert mold, and moves along the track. When it moves to the left entrance of the steaming and curing line, the sub-trolley separates from the mother trolley and enters the steaming and curing line. The integral prefabricated box culvert mold is transported to the corresponding position in the independent steaming and curing kiln through the mold running track, and the integral prefabricated box culvert therein is cured;

[0016] S5. After the curing operation is completed, the sub-trolley moves the cured integral prefabricated box culvert mold from the corresponding position in the independent steam curing kiln to the right end of the casting production line;

[0017] S6. Repeat steps S1 to S5 to enter the next production maintenance operation.

[0018] Furthermore, step S3 specifically includes the following steps:

[0019] S31. The integral prefabricated box culvert mold enters the mold cleaning and spraying station for mold cleaning and spraying of release agent. After the operation is completed, it flows along the casting production line to the next station;

[0020] S32. After the operation of step S31, the integral prefabricated box culvert mold sequentially enters the steel cage mold station and the mold closing station, and the steel cage is molded, embedded parts are installed and inspected. After the operation is completed, the casting production line is transferred to the next station;

[0021] S33. After the operation of step S32, the integral prefabricated box culvert mold enters the pouring and vibrating station for automatic concrete pouring and vibrating operations. After the operation is completed, the pouring production line is transferred to the next station;

[0022] S34. After the operation of step S33, the integral prefabricated box culvert mold enters the static stop position, and after the operation is completed, the casting production line is transferred to the next station;

[0023] S35. After the operation in step S34, the integral prefabricated box culvert mold is subjected to a plurality of static stop stations for curing and then enters a plastering station for plastering operation.

[0024] Furthermore, the integral prefabricated box culvert mold is placed at a corresponding position in an independent steam curing kiln, and the curing operation includes the following steps: when the integral prefabricated box culvert mold enters the independent steam curing kiln, according to the number of integral prefabricated box culvert molds in each independent steam curing kiln and related curing parameters, the real-time temperature in the independent steam curing kiln is identified by a temperature sensor, and the steam output is intelligently adjusted by controlling the opening and closing of the solenoid valve.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] 1. The casting production line of the present invention uses a hydraulic jacking system as a transmission power mechanism, and the driven roller provides support and sliding for the mold, which can achieve precise control of the advancement and stopping of the mold, and park the mold in the corresponding process to cooperate with the overall operation of the production line.

[0027] 2. The present invention adopts a mother-and-child trolley as a mold transport device to provide lane changing for the mold when entering and exiting the kiln, and can transfer the mold from the production pouring line to the corresponding position in the steaming line, thereby providing a convenient, effective and precise mold movement function.

[0028] 3. The independent steam curing kiln provided in the present invention is an independent curing unit, which can realize temperature regulation in each closed space, realize temperature rise, constant temperature and temperature drop controllable, and does not interfere with the curing work in other kilns. The curing line can complete curing from left to right in sequence. After the right end completes the curing first, it can be transported away by the mother-and-child trolley for demoulding and enter the next process. The mother-and-child trolley that completes the transportation can return to take the next mold that has completed curing. The whole process is coherent and efficient.

[0029] 4. The present invention is applied to the automated production of integral prefabricated box culverts. The central control system regulates the pouring production line, steaming line and mold transport device as a whole. The integral prefabricated box culvert mold moves regularly at a certain rhythm on the production line. The construction personnel only need to stand at a fixed workstation to cooperate in completing the operation of this process, which is accurate, efficient, time-saving and labor-saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the plan layout of the integrated prefabricated box culvert automated production system in an embodiment of the present invention.

[0031] Figure 2 It is a side view of a casting production line in an embodiment of the present invention.

[0032] Figure 3 It is a side view of the steaming line in an embodiment of the present invention.

[0033] Figure 4 Schematic diagram of the mold and power system in a pouring production line station in an embodiment of the present invention.

[0034] Figure 5 Schematic diagram of the structure of the integral prefabricated box culvert mold of the present invention.

[0035] Figure 6 It is a schematic diagram of the layout of the pouring material distribution equipment of the present invention.

[0036] Reference numerals:

[0037] 1. Casting production line; 2. Steam curing line; 3. Mould transport device; 4. Integral prefabricated box culvert mould; 5. Integral prefabricated box culvert; 6. Independent steam curing kiln; 101. Demolding station, 102. Mould cleaning and spraying station, 103. Steel cage moulding station, 104. Mould closing station, 105. Pouring and vibrating station, 106. Static stop station, 107. Hydraulic jacking system, 1071. Moving trolley, 1072. Push rod, 108. Roller, 109. Stairs; 110. High hopper, 111. Low hopper, 112. Material distribution hopper; 201. Electric rolling door; 401. Mould bottom plate; 402. External mould moving track; 403. External mould; 404. Internal mould; 405. External mould walking wheel. DETAILED DESCRIPTION

[0038] The specific implementation modes of the present invention are described in detail below in conjunction with the accompanying drawings, but it should be understood that the protection scope of the present invention is not limited by the specific implementation modes.

[0039] Example 1

[0040] like Figures 1 to 3 As shown, an integrated prefabricated box culvert automated production system includes: a casting production line 1, a steaming and curing line 2, a mold transport device 3 and a control system.

[0041] The pouring production line 1 and the steam curing line 2 are arranged in parallel. In this embodiment, each pouring production line corresponds to a steam curing line. According to actual needs, it can also be adjusted so that one pouring production line corresponds to two parallel steam curing lines. The mold transport device 3 is arranged at both ends of the pouring production line 1 and the steam curing line 2. The mold transport device 3 completes the circulation of the integral prefabricated box culvert 5 and the integral prefabricated box culvert mold 4 between the pouring production line 1 and the steam curing line 2; the control system is connected to the pouring production line 1, the steam curing line 2 and the mold transport device 3 through electrical signals. The central control system performs overall regulation on the coordination of the pouring production line 1, the steam curing line 2 and the mold transport device 3.

[0042] The pouring production line 1 is used for pouring and producing the integral prefabricated box culvert 5 and performing static maintenance and finishing operations on the integral prefabricated box culvert 5; the pouring production line includes a demoulding station 101, a mold cleaning and spraying station 102, a steel cage mold insertion station 103, a mold closing station 104, a pouring and vibrating station 105, a plurality of static stop stations 106 and a finishing station, which are arranged in sequence.

[0043] Multiple groups of rollers 108 are symmetrically fixed on both sides of the pouring production line 1, and the rollers 108 are in contact with the bottom of the integral prefabricated box culvert mold 4. In this embodiment: the spacing between each group of rollers 108 is equal, and the bottom of each integral prefabricated box culvert mold 4 contacts more than 3 groups of rollers 108, so as to set the spacing between each group of rollers; each group of rollers 108 is two and symmetrically fixed on both sides of the pouring production line 1, and the spacing between the two symmetrical rollers 108 in the same group is less than the width of the integral prefabricated box culvert mold 4. The rollers are provided with rims to control the direction of the mold.

[0044] like Figure 4 As shown, an independent hydraulic jacking system 107 is arranged under each workstation of the casting production line 1. The hydraulic jacking system 107 includes a hydraulic cylinder and a propeller connected to the cylinder. The cylinder drives the propeller to push the integral prefabricated box culvert mold 4 forward, and supports and slides through the roller 108, so that the integral prefabricated box culvert mold 4 on the casting production line 1 is moved from one workstation to the next workstation.

[0045] In this embodiment, the propulsion direction of the hydraulic cylinder in the hydraulic jacking system 107 is consistent with the running direction of the casting production line 1. The thruster includes a mobile trolley 1071 connected to the hydraulic cylinder and a push rod 1072 rotatably connected to the mobile trolley. The mobile trolley is parallel to the casting production line 1. When the hydraulic cylinder extends and drives the thruster to extend, the push rod rotates to be perpendicular to the mobile trolley, thereby pushing the integral prefabricated box culvert mold 4 to move. When the hydraulic cylinder contracts and drives the thruster back to the origin, the push rod rotates to be parallel to the mobile trolley. In this embodiment, a translation trolley is placed under each workstation, and all the trolleys are connected in series. In this way, all workstations move forward as a whole, and the action of one workstation is completed in two times, and the cycle operation is realized step by step. A braking positioning device is set on the left side of each workstation of the casting production line 1 to prevent the mold from passing by inertia. Reduce the buffer at the end of the cylinder propulsion and reduce the disturbance of the mold start and stop to the concrete.

[0046] The steam curing line 2 is used to steam cure the integral prefabricated box culvert 5 delivered by the casting production line 1; the steam curing line 2 is composed of a plurality of independent steam curing kilns 6 arranged in sequence, each of which is provided with an exit and an entrance, and both the exit and the entrance are provided with electric rolling shutter doors 201, and the exit of the previous independent steam curing kiln 6 corresponds to the entrance of the next independent steam curing kiln 6; each independent steam curing kiln 6 is provided with a set of independent temperature sensors and solenoid valves, which can independently control the temperature in the kiln, and mold running tracks and steel pier supports are provided on both sides of each independent steam curing kiln 6, and adjacent independent steam curing kilns 6 are connected through mold running tracks. In this embodiment, each kiln independently cures a set of molds. A temperature-controlled LED display screen is separately provided outside the kiln to display the temperature in the kiln in real time. In this embodiment, there are 1 8 kilns on the steam curing line, with a total of 8 independent steam curing kilns. Each kiln is provided with a set of steam pipes, which are connected by the main steam pipe in the workshop.

[0047] The mold transport device 3 is a mother-and-child trolley, including a mother trolley and a child trolley arranged on the mother trolley. The mother trolley is ferried between the end of the steaming and curing line 2 and the production pouring line 1. The child trolley is provided with a hydraulic lifting system. The child trolley can lift the integral prefabricated box culvert mold 4 by the hydraulic lifting system and move along the mold running track in the steaming and curing line 2 to move the integral prefabricated box culvert mold 4 into or out of the independent steam curing kiln 6. In this embodiment, the power supply mode of the mother trolley is: the ground busbar is powered. The power supply mode of the child trolley: the child trolley is equipped with a lithium battery, and the operation is powered by the lithium battery. The mother trolley is equipped with an automatic charger. The child trolley leaves the mother trolley and is powered by the lithium battery. The child trolley returns to the mother trolley and is automatically charged.

[0048] like Figure 5 As shown, in this embodiment, the integral prefabricated box culvert mold 4 is a multi-layer structure, which includes, from bottom to top, a mold bottom plate 401, an outer mold moving track 402, and a mold body; the mold bottom plate 401 is a rectangular truss, and an outer mold moving track 402 extending outward is fixed on the upper part of the mold bottom plate 401; the mold body includes two layers, an outer mold 403 and an inner mold 404 arranged in the outer mold 403, respectively. The outer mold 403 can move on the mold bottom plate 401 along the outer mold moving track 402 through the outer mold walking wheel 405, and the moving direction is perpendicular to the casting production line 1. In this embodiment, the external dimensions of the mold are: 11m long, 4.5m wide, and 2.5m high; a construction personnel walking path is arranged on the top periphery of the outer mold 403, and the walking path is connected to a downward walking ladder 109.

[0049] like Figure 6As shown, in this embodiment, the automatic material distribution equipment on the casting production line is a multi-layer structure, which includes, from bottom to top, a mold material distribution hopper 112, a low hopper 111, and a high hopper 110. The high hopper 110 is used to receive the casting material. When receiving the casting material, the lower opening of the high hopper 110 corresponds to the entrance of the low hopper 111. The low hopper 111 can move back and forth along the casting area to transfer the casting material to the material distribution hopper 112 evenly distributed in the casting area, and the material distribution hopper 112 is used for casting.

[0050] Example 2

[0051] An integrated prefabricated box culvert automated production method, using the integrated prefabricated box culvert automated production system described in Example 1, comprises the following steps:

[0052] S1. Performing automatic demoulding operation at the demoulding station 101 of the casting production line 1 to obtain a finished integral prefabricated box culvert 5 and an integral prefabricated box culvert mold 4 respectively.

[0053] S2. The integral prefabricated box culvert mold 4 enters the pouring production line 1 and, driven by the hydraulic jacking system 107, flows from the right end to the left end of the pouring production line and is supported by rollers 108 arranged on both sides of the pouring production line.

[0054] S3. Under the control of the control system, the integral prefabricated box culvert mold 4 performs related process operations at the corresponding station on the casting production line 1 using corresponding supporting equipment to complete the production of the integral prefabricated box culvert 5.

[0055] S4. When the integral prefabricated box culvert mold 4 is transferred to the left end of the pouring production line 1, the mother and child trolleys run to the lower left end of the pouring production line 1, lift up the integral prefabricated box culvert mold 4, and move it along the track. When it moves to the left end entrance of the steaming and curing line 2, the child trolley separates from the mother trolley and enters the steaming and curing line 2. The integral prefabricated box culvert mold 4 is transported to the corresponding position in the independent steaming and curing kiln 6 through the mold running track, and the integral prefabricated box culvert 5 in the integral prefabricated box culvert mold 4 is cured.

[0056] The specific process of transportation into the kiln is as follows: the sub-trolley enters the last station of the casting production line 1 from under the integral prefabricated box culvert mold 4, and the mold is lifted up (separated from the ground roller 108) by the hydraulic lifting system of the sub-trolley, and the sub-trolley returns to the mother trolley, and the mother trolley moves horizontally to the left entrance of the steaming and curing line 2. The sub-trolley runs the mold from the mold running track on the steaming and curing line 2 to the designated independent steam curing kiln 6, and the hydraulic lifting system of the sub-trolley descends to place the mold on the steel pier support in the kiln, and the sub-trolley returns to the mother trolley, and the mother trolley returns to the end of the casting production line 1 to complete an operation cycle.

[0057] S5. After the curing operation is completed, the sub-trolley moves the cured integral prefabricated box culvert mold 4 from the corresponding position in the independent steam curing kiln 6 to the right end of the casting production line 1.

[0058] The specific process of transportation out of the kiln is as follows: the sub-trolley runs from the right end of the steam-curing line 2 from the mother trolley to the designated independent steam curing kiln 6, the hydraulic lifting system of the sub-trolley rises, lifts the integral prefabricated box culvert mold 4, the sub-trolley returns to the mother trolley, the mother trolley returns to the right end of the production pouring line 1, the sub-trolley transports the mold to the first workstation at the right end of the production pouring line 1, lowers the mold and places it on the ground roller 108, the sub-trolley returns to the mother trolley, and a running cycle is completed.

[0059] S6. Repeat steps S1 to S5 to enter the next production maintenance operation.

[0060] In this embodiment, the designed production cycle is 60 minutes.

[0061] Step S3 specifically includes the following steps:

[0062] S31. The integral prefabricated box culvert mold 4 enters the mold cleaning spraying station 102 for mold cleaning and spraying release agent operation, and after completion of the operation, it flows along the casting production line to the next station;

[0063] S32. After the operation of step S31, the integral prefabricated box culvert mold 4 sequentially enters the steel cage mold station 103, the mold station 104, the steel cage mold, embedded parts and inspection operations, after the operation is completed, the casting production line is transferred to the next station;

[0064] S33. After the operation of step S32, the integral prefabricated box culvert mold 4 enters the pouring and vibrating station 105 for automatic concrete pouring and vibrating operation. After the operation is completed, the pouring production line is transferred to the next station;

[0065] S34. After the operation of step S33, the integral prefabricated box culvert mold 4 enters the static stop station 106, and after the operation is completed, the casting production line is transferred to the next station;

[0066] S35. After the operation in step S34, the integral prefabricated box culvert mold 4 is subjected to a plurality of static stop stations for curing and then enters a plastering station for plastering operation.

[0067] The integral prefabricated box culvert mold 4 is placed at a corresponding position in an independent steam curing kiln 6, and a curing operation is performed, including the following steps: after the integral prefabricated box culvert mold 4 enters the independent steam curing kiln 6, according to the number of integral prefabricated box culvert molds in each independent steam curing kiln 6 and related curing parameters, the real-time temperature in the independent steam curing kiln is identified by a temperature sensor, and the steam output is intelligently adjusted by controlling the opening and closing of the solenoid valve.

[0068] The foregoing description of specific exemplary embodiments of the present invention is for the purpose of illustration and demonstration. These descriptions are not intended to limit the present invention to the precise form disclosed, and it is obvious that many changes and variations can be made based on the above teachings, such as the number of curing kilns, the power supply mode of the mother-child car, and all the changes made based on this embodiment. The purpose of selecting and describing the exemplary embodiments is to explain the specific principles of the present invention and its practical application, so that those skilled in the art can realize and utilize various different exemplary embodiments of the present invention and various different options and changes. The scope of the present invention is intended to be defined by the claims and their equivalents.

Claims

1. An automated production method for an integral prefabricated box culvert, characterized in that: An integrated prefabricated box culvert automated production system is used, including: a pouring production line, a steaming and curing line, a mold transport device and a control system; The pouring production line and the steaming curing line are arranged in parallel, and the steaming curing line is arranged as one or two parallel lines; the mold transporting device is arranged at both ends of the pouring production line and the steaming curing line, and the mold transporting device completes the circulation of the integral prefabricated box culvert and its mold between the pouring production line and the steaming curing line; the control system is connected to the pouring production line, the steaming curing line and the mold transporting device through electrical signals; The casting production line is used for casting and producing integral prefabricated box culverts and performing static maintenance and finishing operations on the integral prefabricated box culverts; the casting production line includes a demoulding station, a mold cleaning and spraying station, a steel cage mold insertion station, a mold closing station, a casting and vibrating station, a static station and a finishing station which are arranged in sequence; a plurality of groups of rollers are symmetrically and fixedly arranged on both sides of the casting production line, and the rollers are in contact with the bottom of the integral prefabricated box culvert mold; a hydraulic jacking system is arranged below the casting production line, and the hydraulic jacking system includes a hydraulic cylinder and a propeller connected to the cylinder, and the cylinder drives the propeller to push the integral prefabricated box culvert mold forward, and supports and slides through rollers, so that the integral prefabricated box culvert mold on the casting production line is moved from one station to the next station; The steam curing line is used to steam-cure the integral prefabricated box culvert delivered by the casting production line; the steam curing line is composed of a plurality of independent steam curing kilns arranged in sequence, each independent steam curing kiln is provided with an exit and an entrance, and both the exit and the entrance are provided with electric rolling shutter doors, and the exit of the previous independent steam curing kiln corresponds to the entrance of the next independent steam curing kiln; each independent steam curing kiln is provided with a set of independent temperature sensors and solenoid valves, which can independently control the temperature in the kiln, and mold running tracks and steel pier supports are provided on both sides of each independent steam curing kiln, and adjacent independent steam curing kilns are connected through mold running tracks; The mold transport device is a mother-and-child trolley, including a mother trolley and a child trolley arranged on the mother trolley. The mother trolley is ferried between the end of the steaming and curing line and the production pouring line. The child trolley is provided with a hydraulic lifting system. The child trolley can lift the integral prefabricated box culvert mold by the hydraulic lifting system and move along the mold running track in the steaming and curing line to move the integral prefabricated box culvert mold into or out of the independent steam curing kiln; The power supply mode of the mother trolley: the ground busbar is powered; the power supply mode of the child trolley: the child trolley is equipped with a lithium battery, and the operation is powered by the lithium battery. The mother trolley is equipped with an automatic charger. The child trolley leaves the mother trolley and is powered by the lithium battery. The child trolley returns to the mother trolley and is automatically charged; The steps include: S1. Automatic demoulding operation is performed on the demoulding station of the casting production line to obtain finished integral prefabricated box culverts and integral prefabricated box culvert molds; S2. The integral prefabricated box culvert mold enters the casting production line and, driven by the hydraulic jacking system, flows from the right end to the left end of the casting production line and is supported by rollers disposed on both sides of the casting production line; S3. Under the control of the control system, the integral prefabricated box culvert mold performs related process operations at the corresponding station on the casting production line using corresponding supporting equipment to complete the production of the integral prefabricated box culvert; S4. When the integral prefabricated box culvert mold is transferred to the left end of the pouring production line, the mother and child trolleys run to the lower left end of the pouring production line, lift up the integral prefabricated box culvert mold, and move it to the left entrance of the steaming and curing line, the child trolley separates from the mother trolley and enters the steaming and curing line, and the integral prefabricated box culvert mold is transported to the corresponding position in the independent steaming and curing kiln through the mold running track, and the integral prefabricated box culvert therein is cured; The specific process of transportation into the kiln is as follows: the sub-trolley enters the last station of the casting production line from under the integral prefabricated box culvert mold, and the mold is lifted up by the hydraulic lifting system of the sub-trolley. The sub-trolley returns to the mother trolley, and the mother trolley moves horizontally to the left entrance of the steaming and curing line. The sub-trolley moves the mold from the mold running track on the steaming and curing line to the designated independent steam curing kiln. The hydraulic lifting system of the sub-trolley descends, and the mold is placed on the steel pier support in the kiln. The sub-trolley returns to the mother trolley, and the mother trolley returns to the end of the casting production line to complete a running cycle; S5. After the curing operation is completed, the sub-trolley moves the cured integral prefabricated box culvert mold from the corresponding position in the independent steam curing kiln to the right end of the casting production line; S6. Repeat steps S1 to S5 to enter the next production maintenance operation.

2. The automated production method for an integral prefabricated box culvert according to claim 1 is characterized in that: The spacing between each group of rollers is equal, and the bottom of each integral prefabricated box culvert mold contacts more than three groups of rollers; each group of rollers has two and is symmetrically fixed on both sides of the casting production line, and the spacing between the two symmetrical rollers in the same group is less than the width of the integral prefabricated box culvert mold.

3. The automated production method for an integral prefabricated box culvert according to claim 1 is characterized in that: The propulsion direction of the hydraulic cylinder is consistent with the running direction of the casting production line. The thruster includes a moving trolley connected to the hydraulic cylinder and a push rod rotatably connected to the moving trolley. The moving trolley is parallel to the casting production line. When the hydraulic cylinder extends and drives the thruster to extend, the push rod rotates to be perpendicular to the moving trolley, thereby pushing the integral prefabricated box culvert mold to move. When the hydraulic cylinder contracts and drives the thruster to return to the origin, the push rod rotates to be parallel to the moving trolley.

4. The automated production method for an integral prefabricated box culvert according to claim 1 is characterized in that: A braking and positioning device is arranged on the left side of each workstation of the casting production line to prevent the mold from passing by inertia.

5. The automated production method for an integral prefabricated box culvert according to claim 1 is characterized in that: The integral prefabricated box culvert mold is a multi-layer structure, which includes, from bottom to top, a mold base plate, an outer mold moving track, and a mold body; the mold base plate is a rectangular truss, and an outer mold moving track extending outward is fixed to the upper part of the mold base plate; the mold body includes an inner and outer layer, namely an outer mold and an inner mold arranged in the outer mold, and the outer mold can move on the mold base plate along the outer mold moving track, and the moving direction is perpendicular to the casting production line.

6. The automated production method for an integral prefabricated box culvert according to claim 5 is characterized in that: A walking path for construction workers is arranged on the outer periphery of the top of the outer mold, and the walking path is connected with a downward walking ladder directly to the bottom of the mold.

7. The automated production method for an integral prefabricated box culvert according to claim 1, characterized in that: The automatic material distribution equipment on the casting production line is a multi-layer structure, which includes a mold material distribution hopper, a low hopper, and a high hopper from bottom to top.

8. The automated production method for an integral prefabricated box culvert according to claim 1, characterized in that: Step S3 specifically includes the following steps: S31. The integral prefabricated box culvert mold enters the mold cleaning and spraying station for mold cleaning and spraying of release agent. After the operation is completed, it flows along the casting production line to the next station; S32. After the operation of step S31, the integral prefabricated box culvert mold sequentially enters the steel cage mold station and the mold closing station, and the steel cage is molded, embedded parts are installed and inspected. After the operation is completed, the casting production line is transferred to the next station; S33. After the operation of step S32, the integral prefabricated box culvert mold enters the pouring and vibrating station for automatic concrete pouring and vibrating operations. After the operation is completed, the pouring production line is transferred to the next station; S34. After the operation of step S33, the integral prefabricated box culvert mold enters the static stop position, and after the operation is completed, the casting production line is transferred to the next station; S35. After the operation in step S34, the integral prefabricated box culvert mold is subjected to a plurality of static stop stations for curing and then enters a plastering station for plastering operation.

9. The automated production method for an integral prefabricated box culvert according to claim 1, characterized in that: The integral prefabricated box culvert mold is placed at a corresponding position in an independent steam curing kiln, and a curing operation is performed, including the following steps: after the integral prefabricated box culvert mold enters the independent steam curing kiln, according to the number of integral prefabricated box culvert molds in each independent steam curing kiln and related curing parameters, the real-time temperature in the independent steam curing kiln is identified by a temperature sensor, and the steam output is intelligently adjusted by controlling the opening and closing of the solenoid valve.

Images