Template system for prefabricating box girder of high-speed railway

Abstract

The utility model discloses a high-speed railway precast box girder formwork system which comprises a bottom formwork, two side formworks, two end formworks and an inner formwork, the two side formworks are arranged on the side faces of the bottom formwork respectively, the two end formworks are arranged between the bottom formwork and the side formworks respectively, and the inner formwork is arranged between the two side formworks. The end mold comprises demolding driving parts, a first mounting seat extending downwards and second mounting seats extending towards the outer side, the first mounting seat is arranged on the lower portion of the end mold, the second mounting seats are arranged on the two sides of the upper portion of the end mold, and the demolding driving parts are arranged on the first mounting seat and the second mounting seats; and a telescopic mechanism for adjusting the shape and size of the inner mold is arranged on the inner mold. And when the inner mold needs to be demolded, the shape of the inner mold is controlled to be reduced by utilizing the telescopic mechanism, so that the inner mold is relatively easy to demold, the difficulty during demolding of the inner mold is greatly reduced, the construction efficiency of a prefabricated box girder template system is effectively improved, and the problem that the demolding difficulty of the inner mold is relatively high is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of construction of prefabricated box girders on high-speed railways, in particular to a template system for prefabricated box girders on high-speed railways. Background Art

[0002] The construction process of prefabricated box beams is usually as follows: after assembling the bottom form, two side forms, two end forms and the inner form, the inner form is placed inside the side form, and then grouting and vibration are performed between the inner form and the side form; after the concrete pouring is completed, the inner form and the end form are removed to obtain the required prefabricated box beam. Usually, the internal space of the box beam is small, and in the traditional box beam formwork, it is difficult to demold the inner form, and there is a problem that the inner form is not easy to demold. At the same time, when the end form is demolded, there is a reaction force of the end form demolding that acts on the concrete beam, affecting the surface molding quality of the concrete beam.

[0003] The Chinese patent with the authorization announcement number CN2194024U discloses an automatic demoulding device for end molds and a box beam template system, including a demoulding drive, a first mounting seat extending downward and a second mounting seat extending outward, the first mounting seat is arranged at the lower part of the end mold, the second mounting seat is arranged at both sides of the upper part of the end mold, and the demoulding drive is arranged on the first mounting seat and the second mounting seat. The above-mentioned public document further discloses a box beam template system, including an end mold, a bottom mold arranged below the end mold, and an outer mold arranged on both sides of the end mold, and also includes an automatic demoulding device for the end mold, the demoulding drive on the first mounting seat acts on the bottom mold, and the demoulding component on the second mounting seat acts on the outer mold. The end mold of the above-mentioned public document does not need to be opened on the end mold, which will not affect the forming effect of the beam body. When demoulding, the demoulding drive can push the end mold to drive the end mold to separate quickly from the beam body, and the reaction force of the demoulding drive can act on the outer mold and the bottom mold respectively, avoiding acting on the concrete beam, and will not affect the surface forming quality of the concrete beam.

[0004] The above-mentioned public documents can solve the problem that when the end mold is demolded, the reaction force of the end mold will act on the concrete beam and affect the surface molding quality of the concrete beam. However, it does not solve the problem that the inner mold is difficult to demold. On the basis that the end mold demolding will not affect the surface molding quality of the concrete beam, how to reduce the difficulty of demolding the inner mold is an urgent problem that needs to be solved. Utility Model Content

[0005] In view of the deficiencies in the above-mentioned background technology, the utility model proposes a high-speed railway prefabricated box girder formwork system to solve the problem that it is difficult to demould the inner mold.

[0006] The technical solution of the utility model is achieved as follows: a high-speed railway prefabricated box girder formwork system, including a bottom form, two side forms, two end forms and an inner form, the two side forms are respectively arranged on the sides of the bottom form, the two end forms are respectively arranged between the bottom form and the side forms, and the inner form is arranged between the two side forms; the end form includes a demolding drive component, a first mounting seat extending downward and a second mounting seat extending outward, the first mounting seat is arranged at the lower part of the end form, the second mounting seat is arranged on both sides of the upper part of the end form, the demolding drive component is arranged on the first mounting seat and the second mounting seat, and the inner form is provided with a telescopic mechanism for adjusting the shape and size of the inner form itself.

[0007] Preferably, the inner mold includes an inner mold frame and an inner mold body which is expanded or contracted by a telescopic mechanism, the inner mold body is adapted to the structure of the box beam, and the telescopic mechanism is arranged between the inner mold frame and the inner mold body.

[0008] Preferably, the telescopic mechanism comprises a telescopic cylinder, and the inner template body comprises an end segment, a variable segment and a middle segment connected in sequence, and the end segment, the variable segment and the middle segment can all adjust their own shapes and sizes through the telescopic cylinder.

[0009] Preferably, the end segment, variable segment and middle segment each include a fixed plate and two telescopic plates, the fixed plate is connected to the inner mold frame, the two telescopic plates are respectively hinged at both ends of the fixed plate, one end of the telescopic cylinder is hinged to the fixed plate, and the other end is hinged to the telescopic plate, and the telescopic cylinder is connected to an external control system.

[0010] Preferably, a plurality of the telescopic cylinders are symmetrically arranged on the fixed plate.

[0011] Preferably, a first support screw and a second support screw are further provided between the inner mold frame and the inner mold plate body, one end of the first support screw is detachably connected to the inner mold frame, and the other end is detachably connected to the fixed plate, and one end of the second support screw is detachably connected to the inner mold frame, and the other end is detachably connected to the telescopic plate.

[0012] Preferably, a moving mechanism is provided at the bottom of the inner mold frame.

[0013] Preferably, the moving mechanism includes a support column arranged on the ground, the top of the support column passes through the bottom mold and extends between the two side molds, the top of the support column is connected to a support frame, the support frame is provided with a roller group, and a limiting saddle is provided at the bottom of the inner mold frame, and the limiting saddle is in rolling cooperation with the roller group.

[0014] Preferably, the roller group includes at least two rollers, and any of the rollers includes a wheel body and a wheel frame, the wheel frame is connected to the supporting frame, the wheel body is rotatably arranged on the wheel frame, the wheel body is rollingly matched with a limiting saddle, and the wheel frame is limiting matched with a limiting saddle.

[0015] Preferably, two first mounting seats are provided, and the two first mounting seats are respectively provided on both sides of the lower part of the end mold; two second mounting seats are provided, and the two second mounting seats are respectively provided on both sides of the upper part of the end mold; the demolding drive component is a cylinder, and a synchronization module is provided on the end mold, and the synchronization module is connected to the cylinder.

[0016] Beneficial effects of the utility model:

[0017] 1. The inner mold of the utility model is provided with a telescopic mechanism for adjusting the shape and size of the inner mold itself. When the inner mold needs to be demoulded, the telescopic mechanism is used to control the shape of the inner mold itself to shrink, making it easier to demould the inner mold, greatly reducing the difficulty of demoulding the inner mold and effectively improving the construction efficiency of the prefabricated box girder formwork system.

[0018] 2. The bottom of the inner mold of the utility model is provided with a moving mechanism, and the position of the inner mold can be adjusted by the moving mechanism. At the same time, the entire inner mold can be moved on the moving mechanism, so as to facilitate the removal of the inner mold from the mounting hole after demoulding, and facilitate the entry into the mounting hole during prefabrication. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present utility model, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a schematic diagram of the utility model.

[0021] Figure 2 It is a schematic diagram of the inner mold of the utility model.

[0022] Figure 3 It is a schematic diagram of the middle section of the inner mold of the utility model.

[0023] Figure 4 It is a schematic diagram of the contraction of the middle section of the inner mold of the utility model.

[0024] Figure 5 It is a schematic diagram of the stretching of the end segment of the inner mold of the utility model.

[0025] Figure 6 It is a schematic diagram of the contraction of the end segment of the inner mold of the utility model.

[0026] Figure 7 It is a schematic diagram of the mobile mechanism of the utility model.

[0027] In the figure, 1 is an inner mold frame, 2 is a supporting frame, 3 is a side mold, 4 is a limiting horse stool, 5 is a wheel body, 6 is a wheel frame, 7 is a telescopic cylinder, 8 is an end mold, 9 is a first mounting seat, 10 is a second mounting seat, 11 is a synchronization module, 12 is a fixed plate, 13 is a telescopic plate, 14 is a first supporting screw, 15 is a second supporting screw, 16 is a bottom mold, 17 is a mounting hole, 18 is an inner mold, 19 is a middle segment, 20 is a variable segment, 21 is an end segment, 22 is a first telescopic plate, 23 is a second telescopic plate, 24 is a hydraulic rod, and 25 is a connecting frame. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] Embodiment 1, a high-speed railway prefabricated box girder template system, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, it includes a bottom mold 16, two side molds 3, two end molds 8 and an inner mold 18, the two side molds 3 are respectively arranged on the sides of the bottom mold 16, the two end molds 8 are respectively arranged between the bottom mold 16 and the side molds 3, and the inner mold 18 is arranged between the two side molds 3; the end mold 8 includes a demolding drive component, a first mounting seat 9 extending downward and a second mounting seat 10 extending outward, the first mounting seat 9 is arranged at the lower part of the end mold 8, and the second mounting seat 10 is arranged on both sides of the upper part of the end mold 8, the demolding drive component is arranged on the first mounting seat 9 and the second mounting seat 10, and the inner mold 18 is provided with a telescopic mechanism for adjusting the shape and size of the inner mold 18 itself. The end mold 8 is provided with a mounting hole 17, and the mounting holes 17 of the two end molds 8 are coaxially arranged. The inner mold 18 enters the space formed by the bottom mold 16, the two side molds 3, and the two end molds 8 along the mounting hole 17. When the inner mold 18 needs to be demolded, the telescopic mechanism is used to control the shape of the inner mold itself to shrink, so that the inner mold is easier to demold, which greatly reduces the difficulty of demolding the inner mold and effectively improves the construction efficiency of the prefabricated box girder formwork system.

[0030] Embodiment 2, based on embodiment 1, a high-speed railway prefabricated box girder template system, such as Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6As shown, the inner mold 18 includes an inner mold frame 1 and an inner mold body that is expanded or contracted by a telescopic mechanism, the inner mold body is adapted to the structure of the box beam, and the telescopic mechanism is arranged between the inner mold frame 1 and the inner mold body. When the inner mold 18 needs to be demoulded, the telescopic mechanism controls the inner mold body to contract toward the inner mold frame 1, so that the overall shape of the inner mold 18 is reduced, and then the inner mold 18 is easier to demould, which greatly reduces the difficulty of demoulding the inner mold 18 and effectively improves the efficiency of the construction of the prefabricated box beam template system.

[0031] Embodiment 3, based on embodiment 2, a high-speed railway prefabricated box girder template system, such as Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, the telescopic mechanism includes a telescopic cylinder 7, and the inner template body includes an end segment 21, a variable segment 20 and a middle segment 19 connected in sequence, and the end segment 21, the variable segment 20 and the middle segment 19 can all adjust their own shapes and sizes through the telescopic cylinder 7. The inner template body is composed of the end segment 21, the variable segment 20 and the middle segment 19 connected in sequence because the structural dimensions of the box beam are different during the actual construction process. In order to fit the structural dimensions of the box beam, the inner template body is designed as a three-section connection structure in which the end segment 21, the variable segment 20 and the middle segment 19 are connected in sequence. The end segment 21, the variable segment 20 and the middle segment 19 can all be adjusted by the telescopic cylinder 7 to meet the requirements of reducing the overall shape of the inner mold 18 and making it easy to demould.

[0032] Embodiment 4, based on embodiment 3, a high-speed railway prefabricated box girder template system, such as Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, the end segment 21, the variable segment 20 and the middle segment 19 all include a fixed plate 12 and two telescopic plates 13, the fixed plate 12 is connected to the inner mold frame 1, the two telescopic plates 13 are respectively hinged at the two ends of the fixed plate 12, one end of the telescopic oil cylinder 7 is hinged to the fixed plate 12, and the other end is hinged to the telescopic plate 13, and the telescopic oil cylinder 7 is connected to an external control system. The control system is set to control the telescopic amount of each telescopic oil cylinder 7. Under the control of the control system, the telescopic amount of each telescopic oil cylinder 7 can be automatically controlled, thereby adjusting the shape of the inner mold 18 to complete mold closing, demoulding, and shape adjustment of the inner mold 18, thereby greatly improving the construction efficiency of the prefabricated box beam template.

[0033] Embodiment 5, based on embodiment 4, a high-speed railway prefabricated box girder template system, such as Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, a plurality of telescopic oil cylinders 7 are symmetrically arranged on the fixed plate 12. The number of telescopic oil cylinders 7 is determined according to the length of the fixed plate 12 and the supporting force required by the telescopic plate 13. The telescopic oil cylinders 7 on the inner mold 18 are all symmetrically arranged.

[0034] The structures of the terminal segment and variable segment are similar, such as Figure 5 and Figure 6 shown.

[0035] The structure of the middle segment, such as Figure 3 and Figure 4 As shown, the telescopic plate 13 includes a first telescopic plate 22 and a second telescopic plate 23, wherein one end of the telescopic oil cylinder 7 is hinged to the fixed plate 12 and the other end is hinged to the first telescopic plate 22, the first telescopic plate 22 is hinged to the second telescopic plate 23, and the first telescopic plate 22 and the second telescopic plate 23 are connected by a hydraulic rod 24, one end of the hydraulic rod 24 is hinged to the first telescopic plate 22 and the other end is hinged to the second telescopic plate 23, and the hydraulic rod 24 is also connected to the control system, and the control system controls the telescopic amount of the hydraulic rod 24. When the overall shape of the inner mold 18 is reduced, the hydraulic rod 24 controls the second telescopic plate to retract into the entire inner mold 18, and at the same time, the control system controls the telescopic oil cylinder 7 to retract toward the fixed plate 12 to reduce the overall size of the inner mold 18. The control system is an existing structure, and the control system can realize the synchronous pushing of each telescopic oil cylinder 7 and the hydraulic rod 24.

[0036] Example 6, based on Example 5, a high-speed railway prefabricated box girder template system, such as Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, a first support screw 14 and a second support screw 15 are further provided between the inner mold frame 1 and the inner mold body, one end of the first support screw 14 is detachably connected to the inner mold frame 1, and the other end is detachably connected to the fixed plate 12, and one end of the second support screw 15 is detachably connected to the inner mold frame 1, and the other end is detachably connected to the telescopic plate 13. The provision of the first support screw 14 and the second support screw 15 further improves the supporting force of the inner mold frame 1 on the inner mold body, and ensures the firmness of the inner mold body when it is extended or retracted.

[0037] Embodiment 7, based on any one of Embodiments 2 to 6, a high-speed railway prefabricated box girder formwork system, such as Figure 7 As shown, a moving mechanism is provided at the bottom of the inner mold frame 1. The inner mold frame 1 is provided with a moving mechanism at the bottom, and the inner mold 18 can be adjusted in position by the moving mechanism. At the same time, the entire inner mold 18 can be moved on the moving mechanism, so that the inner mold 18 can be easily removed from the mounting hole 17 after demoulding, and can be easily entered into the mounting hole 17 during prefabrication.

[0038] Embodiment 8, based on embodiment 7, a high-speed railway prefabricated box girder template system, such as Figure 7 As shown, the mobile mechanism includes a support column arranged on the ground, the top of the support column passes through the bottom mold 16 and extends between the two side molds 3, the top of the support column is connected to a support frame 2, the support frame 2 is provided with a roller group, and the bottom of the inner mold frame 1 is provided with a limit saddle 4, and the limit saddle 4 and the roller group are in rolling cooperation. The rolling cooperation between the limit saddle 4 and the roller group allows the entire inner mold 18 to move on the mobile mechanism, thereby facilitating the inner mold 18 to be removed from the mounting hole 17 after demoulding, and conveniently entering the mounting hole 17 during prefabrication.

[0039] Embodiment 9, based on embodiment 8, a high-speed railway prefabricated box girder template system, such as Figure 7 As shown, the roller group includes at least two rollers, and any of the rollers includes a wheel body 5 and a wheel frame 6. The wheel frame 6 is connected to the support frame 2, and the wheel body 5 is rotatably arranged on the wheel frame 6. The wheel body 5 is in rolling cooperation with the limiting saddle 4, and the wheel frame 6 is in limiting cooperation with the limiting saddle 4. The rolling cooperation between the wheel body 5 and the limiting saddle 4 enables the entire inner mold 18 to move on the moving mechanism, and the limiting cooperation between the wheel frame 6 and the limiting saddle 4 is to avoid the inner mold 18 from shifting during the movement of the inner mold 18 on the moving mechanism. Among two adjacent rollers, the wheel frames 6 of the two rollers are fixedly connected by a connecting frame 25.

[0040] Embodiment 10, based on embodiment 1, a high-speed railway prefabricated box girder template system, such as Figure 1 As shown, there are two first mounting seats 9, which are respectively arranged on both sides of the lower part of the end mold 8; there are two second mounting seats 10, which are respectively arranged on both sides of the upper part of the end mold 8; the demolding drive component is a cylinder, and a synchronization module 11 is provided on the end mold 8, and the synchronization module 11 is connected to the cylinder.

[0041] The first mounting seat 9 is arranged at the lower part of the end mold 8 and extends downward, the second mounting seat 10 is arranged at both sides of the end mold 84 and extends outwardly, and the demoulding driving member is arranged on the first mounting seat 9 and the second mounting seat 10. There is no need to open a hole on the end mold 8, which will not affect the forming effect of the beam body. When the end mold 8 is demoulded, the demoulding driving member pushes the side mold 3 and the bottom mold 16 to drive the end mold 8 to separate from the beam body quickly, and the reaction force of the demoulding driving member can act on the bottom mold 16 and the side mold 3 respectively to avoid acting on the concrete beam, so it will not affect the surface forming quality of the concrete beam, and the structure is simple and reasonable. Preferably, one second mounting seat 10 is arranged on each side of the upper part of the end mold 8 to save oil cylinders.

[0042] The synchronous module 11 controls each oil cylinder to synchronously push the end mold 8, ensuring synchronous demoulding of each part of the end mold 8, and the structure is simple and effective. The synchronous module 11 is an existing structure that can realize the synchronous pushing of each oil cylinder.

[0043] When the embodiment 10 is implemented, when the end mold 8 is demoulded, the synchronization module 11 is started, and the synchronization module 11 controls the demoulding driving member to start at the same time, wherein the demoulding driving member on the first mounting seat 9 acts on the bottom mold 16, and the demoulding driving member on the second mounting seat 10 acts on the side mold 3, and the reaction force of the demoulding driving member can act on the bottom mold 16 and the side mold 3 respectively, and the demoulding driving member pushes the side mold 3 and the bottom mold 16 to drive the end mold 8 to be quickly separated from the beam body, thereby completing the demoulding work of the end mold 8;

[0044] When the inner mold is demolded, the first support screw 14 and the second support screw 15 between the inner mold frame 1 and the inner mold plate body are loosened, and then the control system is started. The control system controls the telescopic cylinders 7 and the hydraulic rods 24 to shrink, shrink the inner mold to a removable state, and then move the inner mold along the moving mechanism. The inner mold 18 is removed from the mounting hole 17 to complete the demolding of the inner mold 18.

[0045] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A high-speed railway prefabricated box girder formwork system, comprising a bottom form (16), two side forms (3), two end forms (8) and an inner form (18), wherein the two side forms (3) are respectively arranged on the sides of the bottom form (16), the two end forms (8) are respectively arranged between the bottom form (16) and the side forms (3), and the inner form (18) is arranged between the two side forms (3); the end form (8) comprises a demoulding drive component, a first mounting seat (9) extending downwardly and a second mounting seat (10) extending outwardly, the first mounting seat (9) is arranged at the lower part of the end form (8), the second mounting seat (10) is arranged at both sides of the upper part of the end form (8), the demoulding drive component is arranged on the first mounting seat (9) and the second mounting seat (10), and the character is that The inner mold (18) is provided with a telescopic mechanism for adjusting the shape and size of the inner mold (18) itself.

2. The high-speed railway prefabricated box girder formwork system according to claim 1 is characterized in that: The inner mold (18) comprises an inner mold frame (1) and an inner mold body that is expanded or contracted by a telescopic mechanism, the inner mold body being compatible with the structure of the box beam, and the telescopic mechanism is arranged between the inner mold frame (1) and the inner mold body.

3. The high-speed railway prefabricated box girder formwork system according to claim 2 is characterized in that: The telescopic mechanism comprises a telescopic oil cylinder (7); the inner template body comprises an end segment (21), a variable segment (20) and a middle segment (19) which are connected in sequence; the end segment (21), the variable segment (20) and the middle segment (19) can all adjust their shapes and sizes through the telescopic oil cylinder (7).

4. The high-speed railway prefabricated box girder formwork system according to claim 3 is characterized in that: The end segment (21), the variable segment (20) and the middle segment (19) all comprise a fixed plate (12) and two telescopic plates (13); the fixed plate (12) is connected to the inner mold frame (1); the two telescopic plates (13) are respectively hinged at two ends of the fixed plate (12); one end of the telescopic oil cylinder (7) is hinged to the fixed plate (12) and the other end is hinged to the telescopic plate (13); the telescopic oil cylinder (7) is connected to an external control system.

5. The high-speed railway prefabricated box girder formwork system according to claim 4 is characterized in that: A plurality of telescopic oil cylinders (7) are symmetrically arranged on the fixed plate (12).

6. The high-speed railway prefabricated box girder formwork system according to claim 5, characterized in that: A first supporting screw rod (14) and a second supporting screw rod (15) are further provided between the inner mold frame (1) and the inner mold plate body; one end of the first supporting screw rod (14) is detachably connected to the inner mold frame (1) and the other end is detachably connected to the fixing plate (12); one end of the second supporting screw rod (15) is detachably connected to the inner mold frame (1) and the other end is detachably connected to the telescopic plate (13).

7. The high-speed railway prefabricated box girder formwork system according to any one of claims 2 to 6, characterized in that: A moving mechanism is provided at the bottom of the inner mold frame (1).

8. The high-speed railway prefabricated box girder formwork system according to claim 7, characterized in that: The moving mechanism comprises a support column arranged on the ground, the top of the support column passes through the bottom mold (16) and extends between the two side molds (3), the top of the support column is connected to a support frame (2), a roller group is provided on the support frame (2), and a limiting saddle (4) is provided at the bottom of the inner mold frame (1), and the limiting saddle (4) is in rolling cooperation with the roller group.

9. The high-speed railway prefabricated box girder formwork system according to claim 8, characterized in that: The roller group comprises at least two rollers, each of which comprises a wheel body (5) and a wheel frame (6), the wheel frame (6) being connected to the support frame (2), the wheel body (5) being rotatably arranged on the wheel frame (6), the wheel body (5) being in rolling cooperation with a position-limiting saddle (4), and the wheel frame (6) being in position-limiting cooperation with the position-limiting saddle (4).

10. The high-speed railway prefabricated box girder formwork system according to claim 1, characterized in that: Two first mounting seats (9) are provided, and the two first mounting seats (9) are respectively provided on both sides of the lower part of the end mold (8); two second mounting seats (10) are provided, and the two second mounting seats (10) are respectively provided on both sides of the upper part of the end mold (8); the demoulding drive member is an oil cylinder, and a synchronization module (11) is provided on the end mold (8), and the synchronization module (11) is connected to the oil cylinder.

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