An automatic longitudinal movement device and method for box girder inner formwork

Abstract

This invention discloses an automatic longitudinal movement device and method for box girder inner molds, belonging to the field of precast concrete component production equipment. The device includes: a drive mechanism comprising a base and two drive seats slidably disposed on the base, the two drive seats being distributed along the length of the base, and each drive seat having a drive unit; and an extension mechanism detachably installed between the two drive seats. By driving the two drive units, the inner mold moves along the length of the base under the guidance of the limiting and guiding mechanism, thereby transporting the inner mold located on the frame into the box girder. This not only ensures stability during transportation but also effectively reduces the workload of workers. Compared to gantry cranes, this invention requires less space and, through the limiting and guiding mechanism, ensures that the inner mold does not deviate during longitudinal movement, reducing the likelihood of collisions between the inner mold and the box girder cavity during movement.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of prefabricated concrete component production equipment, in particular to a box girder inner mold automatic longitudinal movement device and method. BACKGROUND

[0002] In the infrastructure construction of railways, highways and the like, prefabricated concrete box girders are widely used due to their stable quality and high construction efficiency. The prefabrication process of the box girder is usually completed on a beam forming platform, wherein the installation and removal of the inner mold is one of the core processes, and the efficiency and safety thereof directly affect the construction period and cost of the entire project.

[0003] At present, the longitudinal movement (i.e. movement out of the mold after demolding and movement into the mold before molding) of the inner mold in the industry is generally carried out by a winch. The winch pulls the inner mold through a steel wire rope, and the inner mold is in a passive towing state during the entire movement process, which is prone to cause the inner mold to deviate and collide in the narrow box girder cavity, not only damaging the inner mold and its attached hydraulic pipeline, but also scratching the inner wall of the initially set concrete box girder, causing product defects. Secondly, in terms of operation process and safety, this method relies on manual operation. The operator needs to frequently enter the platform below or the box girder to hang, remove and guide the steel wire rope, which not only has high labor intensity but also low work efficiency.

[0004] In addition, although there are some improved schemes on the market, such as using a large gantry crane for integral hoisting, this method not only has high requirements for the site, but also cannot solve the problems of accurate guidance and anti-collision of the inner mold during movement in the box. SUMMARY

[0005] The present application provides a box girder inner mold automatic longitudinal movement device and method, which can solve the problems of poor stability, easy deviation and collision, high labor intensity and low efficiency of the prefabricated concrete box girder during movement of the inner mold in the prior art.

[0006] A box girder inner mold automatic longitudinal movement device and method, comprising:

[0007] A driving mechanism comprising a base and two driving seats slidingly arranged on the base, the two driving seats being distributed along the length direction of the base, and a driving portion being arranged on the driving seat;

[0008] An extension mechanism being detachably installed between the two driving seats, and the distance between the two driving seats being changed by the extension mechanism;

[0009] A limiting and guiding mechanism being installed on the driving seat, the inner mold being placed on the limiting and guiding mechanism and being in contact with the driving portion, the inner mold being moved by the driving portion, and the inner mold being moved along the length direction of the base under the limitation of the limiting and guiding mechanism.

[0010] Further, the lengthening mechanism comprises a plurality of bearing beam frames, which are detachably connected to each other to form a beam frame assembly, and the two ends of the beam frame assembly away from each other are detachably connected to the two drive bases, respectively.

[0011] Further, the bearing beam frame is provided with a limiting frame plate and a guide frame plate at one end and one of the drive bases, respectively, and the other end of the bearing beam frame and the other drive base are provided with a positioning plug plate, the positioning plug plate is inserted through the guide frame plate and positioned on the limiting frame plate, a plurality of through holes are formed in the guide frame plate, the limiting frame plate and the positioning plug plate, a transmission assembly is installed on the base, and the bearing beam frame is horizontally moved towards the guide frame plate and the limiting frame plate through the transmission assembly.

[0012] Further, the transmission assembly comprises a main conveying part installed on the base and a vice conveying part rotatably installed on the base, the vice conveying part is located on one side of the two drive bases, and is a placement area for placing the bearing beam frame to be installed, and a driving part is installed on the drive base to drive the rotation of the vice conveying part.

[0013] Further, the main conveying part has a plurality of rotating roller parts, the rotating roller part comprises a plurality of rotating rods linearly and rotatably installed at the bottom of one of the drive bases, a plurality of sliding grooves are circularly and arrayed on the outer circumferential side of the rotating rod, and a plurality of pivot rods are linearly and rotatably installed at the bottom of the other drive base, one end of the pivot rod is circularly and arrayed with a plurality of sliding rods, and the sliding rods are slidingly and inserted into the sliding grooves, and a transmission assembly is installed on the base to drive the rotation of the pivot rod and the rotating rod.

[0014] Further, the vice conveying part comprises a turnover plate rotatably installed on the drive base, a plurality of rotating roller parts are installed between the two turnover plates, the transmission assembly drives the rotation of all the rotating rods and pivot rods, and further comprises a limiting plate slidingly sleeved on the plurality of rotating roller parts of the turnover plate, a positioning plate for being inserted into the positioning slot is slidingly installed on the limiting plate, and a limiting part for limiting the movement of the positioning plate is installed on the limiting plate.

[0015] Further, two rotating plates are symmetrically and rotatably installed on the base, the transmission assembly comprises a prismatic rod, a plurality of prismatic rods are linearly and rotatably installed between the two rotating plates and on the base, the plurality of prismatic rods are slidingly and penetrated through the rotating rods and pivot rods in the same direction, respectively, a synchronous belt assembly is transmissionally installed between every two prismatic rods, a motor is installed on the base to drive the rotation of one of the prismatic rods, and the rotation axes of the turnover plate and the rotating plate are coaxial with the pivot rods on the base.

[0016] Further, the inner mold bottom is provided with a rack and a guide rail, the driving part comprises a transmission gear rotatably installed on the top of the driving base, a motor is installed on the driving base to drive the transmission gear to rotate, the limiting guide mechanism comprises two groups of guide wheels symmetrically and slidably installed on the driving base, the two ends of the two groups of guide wheels away from each other are provided with limiting rings, and an adjusting assembly is installed on the driving base to drive the two groups of guide wheels to move close to or away from each other.

[0017] Further, the multiple guide wheels in the same group are connected through connecting plates, the adjusting assembly comprises a sliding plate slidably installed on the driving base, two connecting plates are hingedly connected with a hinge rod, and the two hinge rods are hingedly connected with the sliding plate, and a threaded adjusting screw is horizontally rotatably installed on the driving base and penetrates the sliding plate.

[0018] An automatic longitudinal moving method of a box girder inner mold, comprising the automatic longitudinal moving device of the box girder inner mold, and comprising the following steps:

[0019] S1: The extension mechanism is adjusted according to the distance between the frame body on which the inner mold is placed and the box girder, so that the distance between the two driving bases is changed, and it is ensured that the subsequent inner mold can be smoothly transferred into the box girder;

[0020] S2: In the demolding process, the driving part is in contact with the driving end of the inner mold which has been completed pouring, the inner mold is supported and limited by the limiting guide mechanism, the driving part is started to drive the inner mold, and the inner mold is moved out of the box girder body under the guidance of the limiting guide mechanism:

[0021] S3: The inner mold is moved along the length direction of the rack by the driving part cooperating with the limiting guide mechanism, and the inner mold is moved into the corresponding box girder.

[0022] Beneficial effects:

[0023] The inner mold is moved along the length direction of the base under the guidance of the limiting guide mechanism by driving the two driving parts, so that the inner mold on the frame body is transported into the box girder, the stability during transportation is ensured, the labor amount of workers is effectively reduced during transportation, compared with the gantry crane mode, the application has small site requirement, and the inner mold is prevented from deviating during longitudinal movement by the limiting guide mechanism, and the problem of collision with the box cavity during movement of the inner mold is not easy to occur. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is a three-dimensional structure schematic view of the application;

[0025] Figure 2 It is a state display diagram when the application is used;

[0026] Figure 3 It is a first state schematic view of the application;

[0027] Figure 4 is a second state schematic diagram of the present application;

[0028] Figure 5 is a partial structure schematic diagram of the present application;

[0029] Figure 6 is a second state schematic diagram of the present application; Figure 5 is another perspective schematic diagram;

[0030] Figure 7 is a second state schematic diagram of the present application; Figure 5 is a partial perspective sectional view;

[0031] Figure 8 is another partial structure schematic diagram of the present application;

[0032] Figure 9 is a second state schematic diagram of the present application; Figure 1 is another perspective schematic diagram;

[0033] Figure 10 is a second state schematic diagram of the present application; Figure 9 is a partial perspective sectional view;

[0034] Figure 11 is a partial structure exploded view of the present application.

[0035] Explanation of reference signs:

[0036] 1, driving mechanism; 101, base; 102, driving seat; 103, driving part; 1031, transmission gear; 1032, guide wheel; 1033, limiting ring; 1034, toothed rail; 1035, guide rail; 2, extension mechanism; 201, bearing beam frame; 3, limiting guide mechanism; 4, transmission assembly; 401, main conveying piece; 4011, rotating rod; 4012, sliding groove; 4013, pivoting rod; 4014, sliding rod; 402, auxiliary conveying piece; 4021, rotating plate; 4022, turnover plate; 4023, limiting plate; 4024, positioning groove; 4025, limiting piece; 4026, limiting piece; 403, driving piece; 5, guide frame plate; 6, positioning plug-in plate; 7, through hole; 8, transmission assembly; 801, prismatic rod; 802, synchronous belt assembly; 9, adjusting assembly; 901, connecting plate; 902, sliding plate; 903, hinged rod; 904, adjusting screw; 10, limiting frame plate. DETAILED DESCRIPTION

[0037] The specific embodiments of the present application are described in detail below, but it should be understood that the protection scope of the present application is not limited by the specific embodiments.

[0038] As Figures 1 to 11 shown, the box girder inner mold automatic longitudinal moving device and method provided by the embodiment of the present application comprises:

[0039] The driving mechanism 1 comprises a base 101 and two driving bases 102 slidingly arranged on the base 101. In the embodiment, the driving bases 102 can be manually moved or driven by electricity. Preferably, two belt pulleys are installed at the bottom of the base 101, and a belt is synchronously installed on the two belt pulleys. The two driving bases 102 are respectively installed on the two long sections of the belt. A motor for driving one of the belt pulleys to rotate is installed on the base 101. Of course, the belt pulley and the belt can be replaced by an existing chain wheel and chain. The driving bases 102 are distributed along the length direction of the base 101. A driving part 103 is arranged on the driving base 102. Preferably, four universal wheels distributed in a rectangular shape are arranged at the bottom of the base 101 to facilitate the movement and adjustment of the base 101. Preferably, adjustable supports are arranged at the four corners of the bottom of the base 101 to adapt to the heights of inner molds of different models.

[0040] The extension mechanism 2 is detachably installed between the two driving bases 102. The distance between the two driving bases 102 is changed through the extension mechanism 2. That is, the distance between the two driving bases 102 can be changed according to the actual length of the inner mold, so that the overall length can be adjusted according to the actual scene, improving the overall applicability and retaining the high applicability of the existing winch. It should be noted that in other embodiments, four universal wheels can be installed at the bottom of the driving base 102, and the base 101 can be directly removed. The extension mechanism 2 is installed between the two driving bases 102, which can maximize the adaptability and ensure that the inner mold can be moved into the corresponding box girder cavity. It should be noted that there is a certain distance between the frame body on which the inner mold is placed and the box girder cavity. The two driving bases 102 are located between the frame body and the box girder, and the extension mechanism 2 has a good supporting effect. In the case where the base 101 is not present, the extension mechanism 2 can effectively ensure the coaxiality of the two driving bases 102, ensure the stability during the transportation of the inner mold, and effectively prevent the inner mold from deviating during the transportation.

[0041] The limiting guide mechanism 3 is installed on the drive seat 102. The inner mold is placed on the limiting guide mechanism 3 and contacts the drive part 103. The drive part 103 drives the inner mold to move, and under the limitation of the limiting guide mechanism 3, the inner mold moves along the length direction of the base 101. That is, after the extension mechanism 2 is adjusted, the two drive seats 102 are placed in a suitable position, with one drive seat 102 facing the inner cavity of the box girder and the other drive seat 102 facing the frame on which the inner mold is placed. The drive part 103 is located below the inner mold and contacts the inner mold. Then, the two drive parts 103 are driven. This allows the inner mold to move along the length of the base 101 under the guidance of the limiting and guiding mechanism 3, thereby transporting the inner mold located on the frame into the box girder. This not only ensures stability during transportation but also effectively reduces the workload of workers. Workers do not need to enter the box girder to attach, detach, and guide the wire ropes, which effectively improves work efficiency. Compared with the gantry crane method, this application not only requires less space but also ensures that the inner mold will not deviate during longitudinal movement through the limiting and guiding mechanism 3, making it less likely to collide with the box girder cavity when moving the inner mold.

[0042] like Figure 1 As shown, in order to facilitate the adjustment of the distance between the two drive seats 102, the extension mechanism 2 includes multiple load-bearing beams 201. The multiple load-bearing beams 201 are detachably connected to each other to form a beam assembly. The two ends of the beam assembly that are far apart from each other are detachably connected to the two drive seats 102 respectively. The design of multiple load-bearing beams 201 being detachable allows for the installation of a corresponding number of load-bearing beams 201 according to the actual site requirements. Furthermore, when it is necessary to move the two drive seats 102 in the future, the load-bearing beams 201 can be disassembled to reduce the overall weight, making it more convenient to move the drive seats 102.

[0043] like Figures 1 to 6 As shown, in some embodiments, a limiting frame plate 10 and a guide frame plate 5 are provided on one end of the supporting beam frame 201 and on one of the drive seats 102, and a positioning insert plate 6 is provided on the other end of the supporting beam frame 201 and on the other drive seat 102. The positioning insert plate 6 passes through the guide frame plate 5 and is inserted into the limiting frame plate 10. The guide frame plate 5, the limiting frame plate 10, and the positioning insert plate 6 are all provided with multiple through holes 7. Specifically, as shown... Figure 4 Combination Figure 8 As shown, one end of the load-bearing beam 201 has two limiting frame plates 10 and guide frame plates 5, which are arranged in a rectangular shape (as shown in the diagram). Figure 8 The drive seats 102 are distributed in a consistent manner. At the other end of the supporting beam frame 201 are four rectangularly arranged positioning plates 6. Similarly, the two drive seats 102 are also rectangularly arranged. Thus, when the positioning plates 6 of the supporting beam frame 201 are positioned as follows... Figure 3After being inserted into the limiting frame plate 10 from left to right, the positioning plate 6 can smoothly pass through the through slot on the limiting frame plate 10. The slot on the limiting frame plate 10 serves as a guide. As the supporting beam frame 201 continues to move, the two vertical positioning plates 6 will be inserted into the two vertical limiting frame plates 10. One end of the slot on the limiting frame plate 10 is sealed, meaning that after the positioning plate 6 is inserted into the limiting frame plate 10 and fits against its inner side, the positioning plate 6 will then be in contact with the limiting frame plate 10. The positioning plate 6 and the through hole 7 on the limiting frame plate 10 are coaxial, and the positioning plate 6 and the through hole 7 on the guide frame plate 5 are also coaxial. Installation can be completed directly using bolts and nuts. The installation method for the two load-bearing beams 201 is the same. A transmission assembly 4 is installed on the base 101. The transmission assembly 4 drives the load-bearing beam 201 to move horizontally from the guide frame plate 5 to the limiting frame plate 10. In other words, the transmission assembly 4 can directly move the load-bearing beam 201 from the guide frame plate 5 to the limiting frame plate 10. Figure 3 The direction is indicated by moving from left to right, which makes it easier to insert the positioning plate 6 into the limiting frame plate 10, making installation more convenient.

[0044] like Figure 1 As shown, in some embodiments, the transmission assembly 4 includes a main conveyor 401 mounted on the base 101 and a secondary conveyor 402 rotatably mounted on the base 101. The secondary conveyor 402 is located on one side of the two drive seats 102 and serves as a placement area for placing the load-bearing beam 201 to be installed. The drive seats 102 are equipped with drive components 403 that drive the secondary conveyor 402 to rotate. After the load-bearing beam 201 is placed on the secondary conveyor 402, the drive component 403 can directly transport the load-bearing beam 201 to the main conveyor 401. The main conveyor 401 continues to drive the corresponding load-bearing beam 201 to move, thereby avoiding manual hoisting and improving the speed of installing the load-bearing beam 201.

[0045] like Figures 1 to 8As shown, in some embodiments, the main conveyor 401 has multiple rotating rollers, each comprising multiple rotating rods 4011 linearly arranged and rotatably mounted on the bottom of one of the drive seats 102. The outer periphery of each rotating rod 4011 has a circular array of grooves 4012. The bottom of the other drive seat 102 has a multiple pivot rod 4013 linearly arranged and rotatably mounted. One end of each pivot rod 4013 has a circular array of slide rods 4014, which are slidably inserted into the grooves 4012. A transmission assembly 8 for driving the pivot rods 4013 and rotating rods 4011 to rotate is mounted on the base 101. When the position between the two drive seats 102 is adjusted, the slide bar 4014 moves within the slide groove 4012, thereby changing the total length of the roller component. Then, when the pivot bar 4013 and the rotating bar 4011 are rotated by the transmission assembly 8, it is ensured that there are no obstructions on the roller component that would affect the conveying of the load-bearing beam 201. The roller component is circular in shape. When multiple pivot bars 4013 and rotating bars 4011 rotate, the load-bearing beam 201 located on it can be moved. This not only ensures the stability during movement, but also allows the length of the roller component to be adaptively adjusted according to the movement of the drive seat 102, effectively improving adaptability.

[0046] like Figures 1 to 8 As shown, in some embodiments, the auxiliary conveying member 402 includes a tilting plate 4022 rotatably mounted on the drive seat 102. Specifically, the drive member 403 is a hydraulic rod hinged to the drive seat 102, and the telescopic end of the hydraulic rod is hinged to the tilting plate 4022. Multiple rotating rollers are installed between the two tilting plates 4022. That is, as shown... Figure 1 and Figure 11 As shown, one of the flip plates 4022 has multiple pivot rods 4013 rotatably mounted in an array, and another flip plate 4022 has multiple rotating rods 4011 rotatably mounted in an array. The sliding rods 4014 on the pivot rods 4013 are also slidably inserted into the corresponding grooves 4012 of the rotating rods 4011. The transmission assembly 8 drives all the rotating rods 4011 and pivot rods 4013 to rotate. That is, the transmission assembly 8 not only drives the rotating rollers on the main conveyor 401, but also drives the rotating parts on the auxiliary conveyor 402, making it more convenient to use. It also includes a limiting plate 4023 slidably fitted onto the multiple rotating rollers of the flip plate 4022. The supporting beam frame 201 has a positioning groove 4024. A positioning plate 4025 for inserting into the positioning groove 4024 is slidably mounted on the limiting plate 4023. A limiting member 4026 for restricting the movement of the positioning plate 4025 is installed on the limiting plate 4023. Figure 3As shown in the diagram, when installing the first load-bearing beam 201, it is only necessary to align the load-bearing beam 201 with one side of the corresponding flipping plate 4022. At this time, the flipped side provides good guidance, ensuring that when multiple rollers rotate, the positioning insert 6 can sequentially pass through the guide frame 5 and be inserted into the limiting frame 10. When installing the next load-bearing beam 201 after completing the installation of one load-bearing beam 201, the following steps are taken: Figure 4 As shown in the diagram, the movable limiting plate 4023 causes the positioning plate 4025 to be inserted into the positioning groove 4024 of the previous load-bearing beam 201, thereby limiting the position of the limiting plate 4023. At this point, after placing the load-bearing beam 201 to be installed on the auxiliary conveyor 402, it is only necessary to place the load-bearing beam 201 against one side of the limiting plate 4023. Thus, when all the rotating rollers rotate, the worker can hold the conveyed load-bearing beam 201 to ensure that the positioning insert 6 on the load-bearing beam 201 is smoothly inserted into the limiting frame plate 10. Once the positioning insert 6 is inserted into the limiting frame plate 10, it means that the positioning insert 6 can move smoothly within the guide frame plate 5, thus avoiding repeated back-and-forth movement of the load-bearing beam 201 and ensuring that the positioning insert 6 can be smoothly inserted into the limiting frame plate 10. This makes the installation of the load-bearing beam 201 more convenient and faster. Specifically, this application is not intended to limit the scope of the installation. The positioning component 4026 can be further restricted by any limiting structure that can limit the positioning plate 4025. In this embodiment, a positioning rod is elastically slidably mounted on the limiting plate 4023 by a spring, and a positioning hole is provided on one side of the positioning plate 4025. After the positioning plate 4025 moves into the limiting plate 4023, the positioning plate 4025 is coaxial with the positioning hole, thereby inserting the positioning rod into the positioning hole. In this way, when the auxiliary conveying component 402 is not needed, the auxiliary conveying component 402, which is in a horizontal state, can be rotated to ninety degrees. Before this, the positioning plate 4025 needs to be moved into the limiting plate 4023 to avoid affecting the rotation of the auxiliary conveying component 402. This can effectively reduce the space occupied by the auxiliary conveying component 402. After the installation of the supporting beam frame 201 is completed, the auxiliary conveying component 402 can be rotated and stored to facilitate the subsequent transfer of the drive seat 102.

[0047] like Figures 1 to 8As shown, in some embodiments, two rotating plates 4021 are symmetrically rotatably mounted on the base 101. The transmission assembly 8 includes prismatic rods 801. Multiple prismatic rods 801 are linearly arrayed and rotatably mounted between the two rotating plates 4021 and on the base 101. The multiple prismatic rods 801 slide through rotating rods 4011 and pivot rods 4013 in the same direction, respectively. A synchronous belt assembly 802 is installed between every two prismatic rods 801. A motor that drives one of the prismatic rods 801 to rotate is mounted on the base 101. The rotation axes of the flipping plate 4022 and the rotating plate 4021 are coaxial with the pivot rod 4013 on the base 101. Thus, when the flipping plate 4022 and the rotating plate 4021 rotate, The synchronous belt assembly 802 between the prismatic rod 801 on the rotating plate 4021 and the prismatic rod 801 on the base 101 will not be pulled and broken due to the rotation of the rotating plate 4021. The synchronous belt assembly 802 can be a chain drive belt assembly or a belt drive belt assembly. Preferably, a chain drive belt assembly is used. When the motor drives one of the prismatic rods 801 to rotate, all the prismatic rods 801 can rotate because the synchronous belt assembly 802 is installed between the prismatic rods 801. Because the prismatic rod 801 slides through the rotating rod 4011 and the pivot rod 4013 in the same direction, multiple rollers will rotate synchronously, ensuring the stability of the conveyor beam 201.

[0048] like Figure 1 and Figure 2 As shown, in some embodiments, a geared rail 1034 and a guide rail 1035 are installed at the bottom of the inner mold. Specifically, there are two guide rails 1035. The driving unit 103 includes a transmission gear 1031 rotatably mounted on the top of the driving seat 102. A motor that drives the transmission gear 1031 to rotate is mounted on the driving seat 102. The limiting and guiding mechanism 3 includes two sets of guide wheels 1032 symmetrically slidably mounted on the driving seat 102. Limiting rings 1033 are constructed at the two ends of the two sets of guide wheels 1032 that are far apart from each other. The guide rails 1035 of the inner mold are respectively located on the two sets of guide wheels 1032. Under the action of the limiting rings 1033, the deviation during movement can be well avoided. The gear 1031 can be a sprocket as in the prior art, while the toothed track 1034 consists of two plates mounted on the inner mold, with columns installed between the plates. Multiple columns form the toothed track 1034, so that when the transmission gear 1031 rotates, it drives the toothed track 1034 to move, thereby realizing the movement of the inner mold. The drive seat 102 is equipped with an adjustment component 9 that drives the two sets of guide wheels 1032 to move closer or further apart. The design of the adjustment component 9 can adjust the distance between the two sets of guide wheels 1032 according to the model of the inner mold, further improving applicability. Preferably, the top of the load-bearing beam 201 can also be equipped with two sets of guide wheels 1032 and the adjustment component 9 to further provide support (not shown in the figure).

[0049] like Figures 1 to 6 As shown, in some embodiments, multiple guide wheels 1032 in the same group are connected by connecting plates 901. The adjustment assembly 9 includes a sliding plate 902 slidably mounted on the drive seat 102. Two connecting plates 901 are hinged with hinge rods 903, and both hinge rods 903 are hinged to the sliding plate 902. An adjustment screw 904 threaded through the sliding plate 902 is horizontally rotatably mounted on the drive seat 102. Rotating the adjustment screw 904 will drive the sliding plate 902 to move. When the sliding plate 902 moves, it will drive the hinge rods 903 hinged to it to move. Because the hinge rods 903 are hinged to the connecting plates 901, the movement of the sliding plate 902 will allow the two sets of guide wheels 1032 to move closer or further apart through the hinge rods 903, making it more convenient to adjust the two sets of guide wheels 1032. Preferably, a scale plate can be installed on the drive seat 102 so that the operator can calculate or directly know the distance between the two sets of guide wheels 1032.

[0050] like Figures 1 to 11 As shown, an automatic longitudinal movement method for the inner formwork of a box girder includes the aforementioned automatic longitudinal movement device for the inner formwork of a box girder, comprising the following steps:

[0051] S1: Adjust the extension mechanism 2 according to the distance between the frame on which the inner mold is placed and the box girder to change the spacing between the two drive seats 102, so as to ensure that the inner mold can be smoothly transferred into the box girder later.

[0052] S2: In the demolding process, the drive unit 103 contacts the drive end of the completed inner mold, and the inner mold is supported and limited by the limiting and guiding mechanism 3; the drive unit 103 is activated, and the drive unit 103 actively drives the inner mold, so that the inner mold moves out of the box girder under the guidance of the limiting and guiding mechanism 3.

[0053] S3: The drive unit 103, in conjunction with the limiting guide mechanism 3, drives the inner mold to move along the length direction of the toothed rail 1034, moving the inner mold into the corresponding box girder.

[0054] The above-disclosed embodiments are merely a few specific examples of the present invention. However, the embodiments of the present invention are not limited thereto, and any variations that can be conceived by those skilled in the art should fall within the protection scope of the present invention.

Claims

1. A device for automatic longitudinal movement of an inner form of a box girder, characterized in that, The utility model relates to a kind of movable inner moulds, including: drive mechanism (1), including base (101) and two drive seats (102) slidingly disposed on the base (101), two drive seats (102) are distributed along the length direction of base (101), drive part (103) is arranged on the drive seat (102);Extension mechanism (2) is detachably installed between two drive seats (102), the distance between two drive seats (102) is changed by extension mechanism (2);Limiting guide mechanism (3) is installed on the drive seat (102), inner mould is placed on limiting guide mechanism (3) and is contacted with drive part (103), is driven by drive part (103) to move inner mould, and under the limiting of limiting guide mechanism (3) to make inner mould move along the length direction of base (101);The extension mechanism (2) includes multiple bearing beam frames (201), multiple bearing beam frames (201) are detachably connected to each other to form beam frame assembly, and the two ends of beam frame assembly away from each other are detachably connected with two drive seats (102) respectively;Limiting frame plate (10) and guide frame plate (5) are arranged on one end of the bearing beam frame (201) and one of the drive seat (102), positioning plugboard (6) is arranged on the other end of the bearing beam frame (201) and the other drive seat (102), positioning plugboard (6) is inserted to limiting frame plate (10) by passing through guide frame plate (5), multiple through holes (7) are formed in guide frame plate (5), limiting frame plate (10) and positioning plugboard (6), transmission assembly (4) is installed on the base (101), and the bearing beam frame (201) is driven to move horizontally to the direction of guide frame plate (5) to limiting frame plate (10) by transmission assembly (4);The transmission assembly (4) includes main conveying part (401) installed on the base (101) and vice conveying part (402) rotatably installed on the base (101), the vice conveying part (402) is located on one side of two drive seats (102), and the vice conveying part (402) is a placing area for placing the bearing beam frame (201) to be installed, drive part (403) for driving the rotation of the vice conveying part (402) is installed on the drive seat (102);The main conveying part (401) has multiple rotating roller parts, and the rotating roller part includes multiple rotating rods (4011) linearly arrayed rotatably installed on the bottom of one of the drive seats (102), multiple sliding grooves (4012) are formed in the outer circumferential side circular array of the rotating rod (4011), multiple pivot rods (4013) are linearly arrayed rotatably installed on the bottom of the other drive seat (102), multiple sliding rods (4014) are circularly arrayed on one end of the pivot rod (4013), and the sliding rod (4014) is slidably inserted into the sliding groove (4012), and transmission assembly (8) for driving the rotation of the pivot rod (4013) and the rotating rod (4011) is installed on the base (101). ​ ​ ​ ​ ​ ​ ​ The auxiliary conveying part (402) comprises two turnover plates (4022) rotatably installed on the driving base (102), a plurality of rotating roller parts are installed between the two turnover plates (4022), the transmission assembly (8) drives all rotating rods (4011) and pivot rods (4013) to rotate, and the auxiliary conveying part (402) further comprises a limiting plate (4023) slidably sleeved on the plurality of rotating roller parts of the turnover plate (4022), the carrying beam frame (201) is provided with a positioning groove (4024), the limiting plate (4023) is slidably provided with a positioning plate (4025) used for being inserted into the positioning groove (4024), and the limiting plate (4023) is provided with a limiting part (4026) used for limiting movement of the positioning plate (4025).

2. The automatic longitudinal moving device for the inner form of a box girder according to claim 1, characterized in that, The base (101) is symmetrically provided with two rotating plates (4021), the transmission assembly (8) comprises a prismatic rod (801), a plurality of prismatic rods (801) are linearly and arrayedly rotatably installed between the two rotating plates (4021) and on the base (101), the plurality of prismatic rods (801) respectively slidably penetrate rotating rods (4011) and pivot rods (4013) in the same direction, every two prismatic rods (801) are transmissionally provided with a synchronous belt assembly (802), the base (101) is provided with a motor for driving one of the prismatic rods (801) to rotate, and rotating shafts of the turnover plates (4022) and the rotating plates (4021) are coaxial with the pivot rods (4013) on the base (101).

3. The automatic longitudinal moving device for the inner form of a box girder according to claim 2, characterized in that, The inner mold bottom is provided with a toothed rail (1034) and a guide rail (1035), the driving part (103) comprises a transmission gear (1031) rotatably installed on the top of the driving base (102), the driving base (102) is provided with a motor for driving the transmission gear (1031) to rotate, and the limiting and guiding mechanism (3) comprises two groups of guide wheels (1032) symmetrically and slidably installed on the driving base (102), the two groups of guide wheels (1032) are provided with limiting rings (1033) at two ends away from each other, and the driving base (102) is provided with an adjusting assembly (9) for driving the two groups of guide wheels (1032) to move close to or away from each other.

4. The automatic longitudinal moving device for the inner form of a box girder according to claim 3, characterized in that, The guide wheels (1032) in the same group are connected through a connecting plate (901), the adjusting assembly (9) comprises a sliding plate (902) slidably installed on the driving base (102), the two connecting plates (901) are both hingedly provided with a hinge rod (903), and the two hinge rods (903) are both hingedly connected to the sliding plate (902), and the driving base (102) is horizontally rotatably provided with an adjusting screw rod (904) penetrating the sliding plate (902) in a threaded mode.

5. A method for automatic longitudinal movement of an inner form for a box girder, characterized in that The box girder inner mold automatic longitudinal moving device comprises the following steps: S1: adjusting the extension mechanism (2) according to the distance between the frame body on which the inner mold is placed and the box girder, so as to change the distance between the two driving bases (102) and ensure that the subsequent inner mold can be smoothly transferred into the box girder; S2: In the demolding process, the driving part (103) is in contact with the driving end of the completed pouring inner mold, which is supported and limited by the limiting guide mechanism (3); the driving part (103) is started to actively drive the inner mold, so that the inner mold moves out of the box girder body under the guidance of the limiting guide mechanism (3): S3: The inner mold is moved to the corresponding box girder along the length direction of the toothed rail (1034) by the driving part (103) cooperating with the limiting guide mechanism (3).

Images