Energy-saving curing device for concrete box girder production

Abstract

This invention belongs to the technical field of building material production equipment, and relates to an energy-saving curing device for concrete box girder production. It includes a movable base, to which a first hydraulic push rod and a second hydraulic push rod are fixedly connected. A guide plate is fixedly connected to the telescopic end of the first hydraulic push rod, and a connecting plate is fixedly connected to the telescopic end of the second hydraulic push rod. A moisture-retaining component is provided on the connecting plate, including a swing frame rotatably connected to the connecting plate. A connecting member is rotatably connected to the swing frame, and a swing rod is rotatably connected to the connecting member. A movable plate is provided on the guide plate, and a fixed plate is fixedly connected to the connecting plate. Both the movable plate and the fixed plate are rotatably connected to swing seats, and each swing seat has a swing plate. A moisture-retaining film is fixedly connected between the movable plate and the fixed plate, between the two swing seats, and between the two swing plates. This invention covers the sprayed portion of the box girder with the moisture-retaining film and proceeds to the next stage of curing only after a preset moisture-retaining time has been achieved, thus reducing energy and water consumption.

Description

Technical Field

[0001] This invention relates to the field of building material production equipment technology, and in particular to an energy-saving curing device for the production of concrete box girders. Background Technology

[0002] As the core load-bearing component of bridge engineering, concrete box girders are usually manufactured centrally in beam fabrication plants. The finished box girders are placed side by side at intervals in the plant area and require seven to fourteen days of moist curing to ensure that the concrete hydration reaction is fully carried out, reach the design strength, and prevent surface cracking. At present, the mainstream curing methods include mobile spray curing and steam curing. Among them, mobile spray curing equipment is widely used due to its high degree of automation and controllable water consumption.

[0003] However, in high-temperature, dry, or windy environments, the existing mobile spray curing equipment still causes extremely rapid evaporation of moisture from the sprayed surface. Actual measurements show that when the ambient temperature exceeds 30°C and the relative humidity is below 50%, the moisture content of the exposed concrete surface drops below the critical value within 10 to 15 minutes after spraying, failing to meet curing requirements. Therefore, frequent and repeated spraying is often necessary on-site, leading to a significant increase in energy and water consumption. Summary of the Invention

[0004] To overcome the shortcomings mentioned in the background above, the present invention provides an energy-saving curing device for the production of concrete box girders.

[0005] The technical solution is as follows: An energy-saving curing device for concrete box girder production includes a movable base, a first hydraulic push rod and symmetrically distributed second hydraulic push rods fixedly connected to the movable base, a guide plate fixedly connected to the telescopic end of the first hydraulic push rod, and a connecting plate fixedly connected to the telescopic ends of the symmetrically distributed second hydraulic push rods, two symmetrically distributed moisturizing components provided on the connecting plate for covering the box girder, the moisturizing components including a swing frame rotatably connected to the connecting plate, a connecting member rotatably connected to the swing frame, a swing rod rotatably connected to the connecting member, several spray heads provided on all the swing frames and all the swing rods, a movable plate provided on the guide plate, a fixed plate fixedly connected to the connecting plate, a first telescopic rod fixedly connected between the movable plate and the fixed plate, a swing seat rotatably connected to both the movable plate and the fixed plate, a swing plate provided on the swing seat, and a moisturizing film fixedly connected between the movable plate and the fixed plate, between the two swing seats, and between the two swing plates.

[0006] Furthermore, the projection of the moisturizing film onto the plane of the movable base near the side of the first hydraulic push rod is arc-shaped, and the projections of the movable plate, the fixed plate, the swing seat, and the swing plate onto the plane of the movable base near the side of the first hydraulic push rod are located outside the projection of the moisturizing film onto the plane of the movable base near the side of the first hydraulic push rod.

[0007] Furthermore, the projections of the swing frame onto the horizontal plane and the swing rod onto the horizontal plane are both located outside the projections of the two moisturizing films onto the horizontal plane.

[0008] Furthermore, the moisturizing film has a hydrophobic barrier layer to inhibit the evaporation of the covered moisture.

[0009] Furthermore, the guide plate is provided with an inclined portion, which is used to guide and support the symmetrically distributed moving plates.

[0010] Furthermore, the swing rod is fixedly connected to a second telescopic rod, the swing seat is rotatably connected to a support member, the second telescopic rod is rotatably connected to the corresponding support member, the swing plate is fixedly connected to the corresponding second telescopic rod, and the connecting plate is provided with two symmetrically distributed power components, which are used to drive the corresponding swing frame to rotate.

[0011] Furthermore, the power assembly includes a first electric push rod, which is rotatably connected to the connecting plate. The telescopic end of the first electric push rod is rotatably connected to the corresponding swing frame. A second electric push rod is rotatably connected to the support member near the fixed plate. The telescopic end of the second electric push rod is fixedly connected to the adjacent second telescopic rod.

[0012] Furthermore, it also includes a fixed base plate, which is fixed between the guide plate and the connecting plate. An air pump is installed on the fixed base plate. Airbags are fixed to the moving plate, the fixed plate, the swing seat, and the swing plate. The airbags are used to contact the box girder, and all the airbags are connected to the air pump.

[0013] Furthermore, all of the airbags are provided with contact blocks, which are used to increase friction between the airbag and the box girder.

[0014] Furthermore, the fixed base plate is fixedly connected with symmetrically distributed spring telescopic rods, and the telescopic ends of the spring telescopic rods are fixedly connected to the corresponding movable plates.

[0015] The beneficial effects of the present invention using the above structure are as follows: The present invention covers the sprayed box girder with a moisturizing film, so that the sprayed box girder immediately enters a relatively sealed moisturizing state, and the next stage of maintenance is carried out after the preset moisturizing time is reached. This reduces the evaporation time of the moisture on the surface of the box girder, keeps the sprayed box girder continuously moist within the preset time, reduces the number of frequent sprayings, and also significantly reduces energy and water consumption.

[0016] By cooperating with the second telescopic rod and the support, the moisturizing film is adjusted along with the swing rod when the position is adjusted according to the size of the box girder, ensuring that the spray position corresponds to the position of the moisturizing film and improving maintenance efficiency.

[0017] By isolating the two sides of the moisturizing film from the air through airbags, a semi-closed barrier is formed between the humid air inside the film and the external environment, which can effectively slow down the evaporation of moisture inside the film, prolong the surface wetting time, and improve the moisturizing performance. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a three-dimensional structural diagram of the first hydraulic push rod, the second hydraulic push rod, and the movable plate of the present invention; Figure 3 This is a three-dimensional structural diagram of the fixing plate and the swing seat of the present invention; Figure 4 This is a three-dimensional structural diagram of the swing rod and swing plate of the present invention; Figure 5 For the present invention Figure 4 An enlarged 3D structural diagram at point A in the middle; Figure 6 This is a three-dimensional structural diagram of the movable plate and the first telescopic rod of the present invention; Figure 7 This is a three-dimensional structural cross-sectional view of the spring telescopic rod of the present invention; Figure 8 This is a schematic diagram of the three-dimensional structure of the moisturizing film of the present invention after it has been unfolded.

[0019] Reference numerals: 1-Moving base, 2-First hydraulic push rod, 21-Guide plate, 3-Second hydraulic push rod, 4-Connecting plate, 5-Swing frame, 6-Connector, 7-Swing rod, 8-Moving plate, 81-First telescopic rod, 9-Fixed plate, 10-Swing seat, 11-Swing plate, 12-Moisturizing film, 301-Second telescopic rod, 302-Supporting component, 201-First electric push rod, 202-Second electric push rod, 401-Fixed base plate, 402-Air pump, 403-Airbag, 501-Spring telescopic rod. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] Example 1 In high-temperature, dry, or windy environments, the use of existing mobile spray curing devices to spray the surface of box girders results in extremely rapid evaporation of the water sprayed onto the box girder surface. Frequent and repeated spraying is often required on site, leading to a significant increase in energy and water consumption.

[0022] An energy-saving curing device for the production of concrete box girders, such as Figures 1-8 As shown, the device includes a movable base 1, a first hydraulic push rod 2 and symmetrically distributed second hydraulic push rods 3 fixedly connected to the movable base 1. The telescopic end of the first hydraulic push rod 2 is fixedly connected to a guide plate 21. The telescopic ends of the symmetrically distributed second hydraulic push rods 3 are jointly fixedly connected to a connecting plate 4. Two symmetrically distributed moisturizing components are provided on the connecting plate 4. The moisturizing components are used to cover the box girder. The moisturizing components include a swing frame 5, which is rotatably connected to the connecting plate 4. The swing frame 5 is rotatably connected to a connector 6. The connector 6 is rotatably connected to a swing rod 7. Several spray heads are provided on all swing frames 5 and all swing rods 7. A movable plate 8 is provided on the guide plate 21. A fixed plate 9 is fixedly connected to the connecting plate 4. A first telescopic rod 81 is fixed between the movable plate 8 and the fixed plate 9. A swing seat 10 is rotatably connected to both the movable plate 8 and the fixed plate 9. A swing plate 11 is provided on the swing seat 10. A moisturizing film 12 is jointly fixed between the movable plate 8 and the fixed plate 9, between the two swing seats 10, and between the two swing plates 11.

[0023] like Figures 1-8 As shown, the projection of the moisturizing film 12 onto the plane of the movable base 1 near the side of the first hydraulic push rod 2 is arc-shaped. The projections of the movable plate 8, the fixed plate 9, the swing seat 10, and the swing plate 11 onto the plane of the movable base 1 near the side of the first hydraulic push rod 2 are located outside the projection of the moisturizing film 12 onto the plane of the movable base 1 near the side of the first hydraulic push rod 2. The projections of the swing frame 5 onto the horizontal plane and the swing rod 7 onto the horizontal plane are both located outside the projections of the two moisturizing films 12 onto the horizontal plane. The moisturizing film 12 has a hydrophobic barrier layer to inhibit the evaporation of the covered moisture. The guide plate 21 is provided with an inclined portion, which is used to guide and support the symmetrically distributed movable plates 8.

[0024] In the above scheme, a water tank is installed on the movable base 1, there are two second hydraulic push rods 3, the connecting plate 4 has two hinge plates symmetrically distributed front and back, the two moisturizing components are symmetrically distributed front and back, the swing frame 5 has a hinge plate, the connecting piece 6 is composed of a C-shaped plate and a cylinder, the cylinder of the connecting piece 6 is provided with a hole, the swing rod 7 is located in the hole of the cylinder of the connecting piece 6 and swings up and down, and the swing rod 7 can swing horizontally relative to the adjacent swing frame 5, all the spray heads on the swing frame 5 and all the spray heads on the swing rod 7 can communicate with the water tank installed on the movable base 1. The hoses are connected, but not shown in the diagram. The telescopic ends of the first hydraulic push rod 2 and the two second hydraulic push rods 3 are used to jointly adjust the distance between all the moving plates 8 and all the fixed plates 9 and the inner wall of the box girder. Water is injected into the spray head to spray and cure the inner wall of the box girder. The moisturizing film 12 is used to cover the sprayed part of the box girder, so that the sprayed box girder immediately enters a relatively sealed moisturizing state. After the preset moisturizing time is reached, the next stage of curing is carried out, which reduces the evaporation time of the moisture on the surface of the box girder. The moisturizing film 12 is in a relaxed state at the beginning.

[0025] like Figures 2-5 As shown, the swing rod 7 is fixedly connected to the second telescopic rod 301, the swing seat 10 is rotatably connected to the support member 302, the second telescopic rod 301 is rotatably connected to the corresponding support member 302, the swing plate 11 is fixedly connected to the corresponding second telescopic rod 301, and two symmetrically distributed power components are provided on the connecting plate 4. The power components are used to drive the corresponding swing frame 5 to rotate.

[0026] In the above scheme, the telescopic end of the second telescopic rod 301 is rotatably connected to the corresponding support member 302 on the right side, and the fixed part of the second telescopic rod 301 is rotatably connected to the corresponding support member 302 on the left side. Through the cooperation between the second telescopic rod 301 and the support member 302, when the position of the swing rod 7 is adjusted according to the size of the box girder, the moisturizing film 12 is also adjusted together, ensuring that the spray position corresponds to the position of the moisturizing film 12, thereby improving the maintenance efficiency.

[0027] like Figures 3-5 As shown, the power assembly includes a first electric push rod 201, which is rotatably connected to the connecting plate 4. The telescopic end of the first electric push rod 201 is rotatably connected to the corresponding swing frame 5. A second electric push rod 202 is rotatably connected to the support member 302 near the fixed plate 9. The telescopic end of the second electric push rod 202 is fixedly connected to the adjacent second telescopic rod 301.

[0028] In the above scheme, two symmetrically distributed first electric push rods 201 are rotatably connected to two hinge plates on the connecting plate 4, respectively. The telescopic end of the first electric push rod 201 is rotatably connected to the hinge plate on the adjacent swing frame 5. The telescopic end of the first electric push rod 201 is used to drive the adjacent swing frame 5 to rotate. Through the rotation of the swing frame 5, the length of the projection of the two swing frames 5 on the horizontal plane in the front-back direction corresponds to the width of the box girder. The support member 302 on the left side is rotatably connected to the corresponding second electric push rod 202 through the fixing frame. The telescopic end of the second electric push rod 202 is used to drive the adjacent second telescopic rod 301 to rotate. Through the rotation of all the second telescopic rods 301, the swing rod 7 is adjusted according to the tilt angle of the side of the box girder.

[0029] The working principle of this embodiment is as follows: When using this device to spray and cure box girders, the operator first moves the movable base 1 and all its parts to the box girders placed side by side. Then, the first hydraulic push rod 2 and the two second hydraulic push rods 3 are activated. The telescopic end of the first hydraulic push rod 2 drives the two movable plates 8 to move upward through the guide plate 21. At the same time, the two second hydraulic push rods 3 together drive the two fixed plates 9 to move upward through the connector 6. All the movable plates 8 and all the fixed plates 9 together drive the parts on them to move upward together until the movable plates 8, fixed plates 9 and swing seat 10 move upward to the point where they are about to contact the lower side of the box girder. At this point, the telescopic ends of the first hydraulic push rod 2 and the two second hydraulic push rods 3 stop moving upward.

[0030] When the height of the swing frame 5 is about to contact the lower side of the box girder, the two first electric push rods 201 are activated. The telescopic ends of the two first electric push rods 201 respectively drive the corresponding swing frame 5 to swing. The swing frame 5 drives the corresponding swing rod 7 to swing together through the corresponding connecting piece 6. The swing frame 5 and the corresponding swing rod 7 rotate relative to each other. During this process, the swing rod 7 moves together with the two corresponding swing plates 11 through the second telescopic rod 301. The support member 302 moves together with the corresponding swing plate 11. At this time, the support member 302 and the corresponding swing seat 10 rotate relative to each other until the two swing... After the projection of the frame 5 onto the horizontal plane in the front-to-back direction corresponds to the width of the box girder, the telescopic end of the first electric push rod 201 stops moving. Then, the two second electric push rods 202 are activated. The telescopic ends of the second electric push rods 202 drive the corresponding swing rods 7 and the two corresponding swing plates 11 to swing through the corresponding second telescopic rods 301. During this process, the swing rods 7 and the corresponding connecting parts 6 rotate relative to the swing plates 11 and the corresponding supporting parts 302 until all the swing plates 11 swing to the side of the box girder, at which point the telescopic ends of the second electric push rods 202 stop moving.

[0031] After all the swing frames 5 and swing rods 7 are adjusted, the movable base 1 moves all its parts between two adjacent box girders. When all the swing frames 5 and swing rods 7 are inside the adjacent box girders, water from the water tank installed on the movable base 1 is introduced through water valves to the spray heads of the swing frames 5 and swing rods 7. Water sprays out from the spray heads of the swing frames 5 and swing rods 7 (this spray position is the initial spray position). As the movable base 1 continues to move until the two swing seats 10 and two swing plates 11 on the right reach the initial spray position, the two swing seats 10 on the right are manually adjusted. The movable base 10 and the two swing plates 11 are fixed. Then, the movable base 1 drives the parts on it to continue moving. At this time, all the swing bases 10 and swing plates 11 on the right side stop moving. During this process, the telescopic ends of the two second telescopic rods 301 and the telescopic ends of the two first telescopic rods 81 begin to move. The guide plate 21 loses contact with the two movable plates 8, and the moisturizing film 12 is gradually stretched until the telescopic ends of the two second telescopic rods 301 and the two first telescopic rods 81 are fully extended. Then, the movable base 1 stops moving, and all the spray heads on the swing frame 5 and the swing rod 7 stop spraying water. At this time, the swing rod 7 and the moisturizing film 12 are at an angle of... Figure 8 The state shown.

[0032] After the movable base 1 stops for a period of time (this period is a specific maintenance time, which will be adjusted according to the specific situation on site), the two swing seats 10 and two swing plates 11 on the right side are manually removed from the fixation. Then, the operator pushes all the movable plates 8, swing seats 10, swing plates 11 and their parts on the right side to the left. The guide plate 21 contacts the two movable plates 8 again until the movable plates 8, swing seats 10 and swing plates 11 are in a certain position. Figure 2 After the indicated state is reached, the reset is completed. Then, the moving base 1 continues to move, and the spray head starts spraying water (this spray position is the second spray position). After the right-side moving plate 8, swing seat 10, and swing plate 11 reach the second spray position, the moving base 1 stops moving. Then, the above steps are repeated to manually fix the right-side moving plate 8, swing seat 10, and swing plate 11 until the box girder maintenance is completed. The sprayed part of the box girder is covered by the moisturizing film 12, so that the sprayed box girder immediately enters a relatively sealed moisturizing state. After the preset moisturizing time is reached, the next stage of maintenance is carried out, which reduces the evaporation time of the moisture on the box girder surface and keeps the sprayed box girder continuously moist within the preset time, reducing the number of frequent sprays. It also significantly reduces energy and water consumption. It should be noted that when only one side of the box girder needs to be maintained, only the moisturizing component on one side needs to be activated. This will not be elaborated further.

[0033] Example 2 Based on Example 1, such as Figures 1-4 and Figure 8As shown, it also includes a fixed base plate 401, which is fixed between the guide plate 21 and the connecting plate 4. An air pump 402 is installed on the fixed base plate 401. Airbags 403 are fixed on the moving plate 8, the fixed plate 9, the swing seat 10 and the swing plate 11. The airbags 403 are used to reduce the contact between the moisture and the box girder and the external environment. All airbags 403 are connected to the air pump 402. All airbags 403 are provided with contact blocks. The contact blocks of the airbags 403 are used to increase the friction between the airbags and the box girder.

[0034] like Figures 4-7 As shown, a fixed base plate 401 is fixedly connected to symmetrically distributed spring telescopic rods 501, and the telescopic ends of the spring telescopic rods 501 are fixedly connected to the corresponding movable plates 8.

[0035] In the above scheme, a number of first fixed seats and a number of second fixed seats are installed on the fixed base plate 401. All the first fixed seats are fixedly connected to the corresponding first telescopic rod 81 to increase the support strength of the first telescopic rod 81. All the second fixed seats are fixedly connected to the corresponding spring telescopic rod 501 to increase the support strength of the spring telescopic rod 501. The friction between the airbag 403 and the inner wall of the box girder is greater than the tension at the telescopic end of the spring telescopic rod 501.

[0036] The working principle of this embodiment is as follows: When the right-side swing seat 10 and swing plate 11 reach the initial spray position, the moving base 1 stops moving, and the air pump 402 is started. The air pump 402 introduces air into all the right-side airbags 403 through the control valve. The right-side airbags 403 gradually inflate and come into contact with the inner wall of the box girder. After the right-side airbags 403 are in contact with the inner wall of the box girder, all the right-side airbags 403 fix the corresponding moving plate 8, the corresponding swing seat 10 and the corresponding swing plate 11 to the inner wall of the box girder by friction. The corresponding air pump 402 stops pumping air.

[0037] During the process of the extension ends of the two second telescopic rods 301 and the two first telescopic rods 81 being fully extended, the two moving plates 8 on the right side fix the extension ends of the corresponding spring telescopic rods 501 until they are fully extended. Then, the air pump 402 is started, and the air pump 402 introduces air into all the airbags 403 on the left side through the control valve. All the airbags 403 on the left side are in contact with the inner wall of the box girder. Then, the moving base 1 stops and begins to moisturize part of the box girder after spraying.

[0038] After the mobile base 1 completes a specific maintenance period, the air pump 402 is activated to extract the gas from all the airbags 403. All the airbags 403 lose contact with the inner wall of the box girder. The airbag 403 on the right side loses contact with the inner wall of the box girder. The telescopic end of the spring telescopic rod 501 moves to the left along with all its parts through the two moving plates 8 on the right side until the two spring telescopic rods 501 reach the desired position. Figure 6 Once the state shown is reached, the reset is complete. Then, repeat the above steps for maintenance.

[0039] Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this invention shall be included within the scope of protection of this invention.

Claims

1. An energy-saving curing device for the production of concrete box girders, characterized in that, The system includes a movable base (1), on which a first hydraulic push rod (2) and symmetrically distributed second hydraulic push rods (3) are fixedly connected. The telescopic end of the first hydraulic push rod (2) is fixedly connected to a guide plate (21), and the telescopic ends of the symmetrically distributed second hydraulic push rods (3) are jointly fixedly connected to a connecting plate (4). Two symmetrically distributed moisturizing components are provided on the connecting plate (4). The moisturizing components are used to cover the box girder. The moisturizing components include a swing frame (5), which is rotatably connected to the connecting plate (4). The swing frame (5) is rotatably connected to a connecting piece (6), and the connecting piece (6) is rotatably connected to a swing arm. The moving rod (7), all the swing frames (5) and all the swing rods (7) are provided with a number of spray heads, the guide plate (21) is provided with a moving plate (8), the connecting plate (4) is fixedly connected with a fixed plate (9), the moving plate (8) and the fixed plate (9) are fixedly connected with a first telescopic rod (81), the moving plate (8) and the fixed plate (9) are rotatably connected with a swing seat (10), the swing seat (10) is provided with a swing plate (11), and a moisturizing film (12) is fixedly connected between the moving plate (8) and the fixed plate (9), between the two swing seats (10) and between the two swing plates (11).

2. The energy-saving curing device for concrete box girder production according to claim 1, characterized in that, The projection of the moisturizing film (12) onto the plane of the movable base (1) near the side of the first hydraulic push rod (2) is arc-shaped, and the projections of the movable plate (8), the fixed plate (9), the swing seat (10) and the swing plate (11) onto the plane of the movable base (1) near the side of the first hydraulic push rod (2) are located outside the projection of the moisturizing film (12) onto the plane of the movable base (1) near the side of the first hydraulic push rod (2).

3. The energy-saving curing device for concrete box girder production according to claim 1, characterized in that, The projections of the swing frame (5) onto the horizontal plane and the swing rod (7) onto the horizontal plane are both located outside the projections of the two moisturizing films (12) onto the horizontal plane.

4. The energy-saving curing device for concrete box girder production according to claim 1, characterized in that, The moisturizing film (12) has a hydrophobic barrier layer to inhibit the evaporation of the covered moisture.

5. The energy-saving curing device for concrete box girder production according to claim 1, characterized in that, The guide plate (21) is provided with an inclined part, which is used to guide and support the symmetrically distributed moving plates (8).

6. The energy-saving curing device for concrete box girder production according to claim 1, characterized in that, The swing rod (7) is fixedly connected to the second telescopic rod (301), the swing seat (10) is rotatably connected to the support member (302), the second telescopic rod (301) is rotatably connected to the corresponding support member (302), the swing plate (11) is fixedly connected to the corresponding second telescopic rod (301), and two symmetrically distributed power components are provided on the connecting plate (4). The power components are used to drive the corresponding swing frame (5) to rotate.

7. The energy-saving curing device for concrete box girder production according to claim 6, characterized in that, The power assembly includes a first electric push rod (201), which is rotatably connected to the connecting plate (4). The telescopic end of the first electric push rod (201) is rotatably connected to the corresponding swing frame (5). The support member (302) near the fixed plate (9) is rotatably connected to a second electric push rod (202), and the telescopic end of the second electric push rod (202) is fixedly connected to the adjacent second telescopic rod (301).

8. The energy-saving curing device for concrete box girder production according to claim 7, characterized in that, It also includes a fixed base plate (401), which is fixed between the guide plate (21) and the connecting plate (4). An air pump (402) is installed on the fixed base plate (401). Airbags (403) are fixed on the moving plate (8), the fixed plate (9), the swing seat (10) and the swing plate (11). The airbags (403) are used to contact the box girder. All the airbags (403) are connected to the air pump (402).

9. The energy-saving curing device for concrete box girder production according to claim 8, characterized in that, All of the airbags (403) are provided with contact blocks, which are used to increase friction with the box girder.

10. An energy-saving curing device for concrete box girder production according to claim 8, characterized in that, The fixed base plate (401) is fixedly connected to symmetrically distributed spring telescopic rods (501), and the telescopic ends of the spring telescopic rods (501) are fixedly connected to the corresponding movable plate (8).

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