Prefabricated box girder inner mold pressing bar

Abstract

The utility model discloses a prefabricated box girder inner mould pressing lever which comprises an inner mould pressing lever body, the inner mould pressing lever body comprises a prefabricated box girder outer formwork body, inner mould bodies are arranged on the two sides of the prefabricated box girder outer formwork body and inside the prefabricated box girder outer formwork body, and a pressing lever plate is arranged on the upper surface of the prefabricated box girder outer formwork body. By designing a reinforcing supporting mechanism, the top end of a lower reinforcing steel plate and the end of a reinforcing inclined plate can make contact with the lower surface of a pressing lever plate and are fixed through bolts, then a sliding supporting rod slides in a supporting transverse rod, a rotating locking bolt is opened for fixing, and the end of the sliding supporting rod and the side face of a prefabricated box girder outer formwork body are fixed through bolts; therefore, the end portion of the pressing lever plate is reinforced and supported when the pressing lever plate is pressed and adjusted, more stable pressing operation is achieved when the pressing lever plate is pressed downwards, deformation is not prone to occurring, and an outer formwork body and an inner formwork body of a prefabricated box girder are more tightly pressed and installed.

Description

Technical Field

[0001] The utility model belongs to the technical field of internal die pressing bars, and particularly relates to an internal die pressing bar for a precast box girder. Background Technique

[0002] A precast box girder is a box girder structure formed by pouring concrete into a pouring cavity formed after an outer mold and an inner mold are combined. When prefabricating the box girder, the inner mold is the main component, and it is necessary to tightly press the inner mold for pouring. Usually, it is tightened by an internal mold pressing bar. The existing internal mold pressing bar is a device for strengthening and installing the inner mold during the prefabrication construction of the precast box girder. The internal mold pressing bar is convenient for strengthening the support and pressing construction at the end, and at the same time increasing the area in the middle of the inner mold to strengthen the extrusion, improving the effect of the internal mold pressing bar body on strengthening the support and pressing of the inner mold of the precast box girder;

[0003] When the existing internal mold pressing bar presses and installs the inner mold of the precast box girder, the pressing bar is directly placed on the upper surface of the precast box girder. After the bottom end of the threaded rod is clamped and installed with the ground through a hook, the top of the thread rotates the nut to pull and adjust the threaded rod to press and install the pressing bar downward, so as to press the inner mold of the precast box girder. And during the pressing operation, both ends of the pressing bar are in a hollow state, which is not convenient for strengthening the support. When the nut rotates and presses on the outer surface of the threaded rod to a certain extent, it is easy to cause the end of the pressing bar to be deformed by force, and after being deformed by force, the inner mold is not fastened, affecting the effect of the internal mold pressing bar on strengthening the support and pressing of the inner mold of the precast box girder. For this reason, the utility model proposes an internal mold pressing bar for a precast box girder. Summary of the Utility Model

[0004] The purpose of the utility model is to provide an internal mold pressing bar for a precast box girder, so as to solve the problems proposed in the above background technique that when the pressing bar presses the inner mold of the precast box girder, both ends of the pressing bar are in a hollow state, which is not convenient for strengthening the support, so that when the nut rotates and presses on the outer surface of the threaded rod to a certain extent, it is easy to cause the end of the pressing bar to be deformed by force, resulting in the inner mold not being fastened, and affecting the effect of the internal mold pressing bar on strengthening the support and pressing of the inner mold of the precast box girder.

[0005] To achieve the above purpose, the utility model provides the following technical solution: An internal mold pressing bar for a precast box girder, including an internal mold pressing bar body, the internal mold pressing bar body includes a precast box girder outer template body, an inner mold body is arranged inside both sides of the precast box girder outer template body, a pressing bar plate is arranged on the upper surface of the precast box girder outer template body, two threaded rods three are arranged at the middle position of the pressing bar plate, a nut four rotates on the surface of the pressing bar plate at the top of the threaded rod three, and the following are further arranged on the internal mold pressing bar body:

[0006] A strengthening support mechanism, and the strengthening support mechanism includes strengthening support components arranged at both ends of the lower surface of the pressing bar plate, and an extended support and fixing component is arranged at the connection between the end of the strengthening support component and the side surface of the precast box girder outer template body;

[0007] A pressing mechanism, and the pressing mechanism includes a connecting component arranged at the bottom end of the third threaded rod, and a pressing component is arranged on the lower surface and the edge of the connecting component.

[0008] Preferably, two threaded rods are arranged at both ends of the pressing bar plate. At the top end of the two threaded rods, a first nut rotates on the surface of the pressing bar plate. At the bottom end of the two threaded rods, a clamping body is welded and fixed. The end of the clamping body is clamped with a hook, and the hook is cast in the ground on one side of the outer formwork body of the precast box girder through concrete.

[0009] Preferably, the strengthening and supporting component includes lower reinforcement steel plates fixed to both ends of the lower surface of the pressing bar plate through fixing bolts. The two threaded rods penetrate through the interior of the lower reinforcement steel plates. One side of the bottom end of the lower reinforcement steel plates is welded and fixed with a reinforcing inclined plate, and the top end of the reinforcing inclined plate is fixed to the lower surface of the pressing bar plate through a fixing bolt.

[0010] Preferably, a triangular structure is formed by the end of the pressing bar plate, the lower reinforcement steel plates and the reinforcing inclined plate.

[0011] Preferably, the extending and supporting and fixing component includes a supporting cross bar welded and fixed to the bottom end of the reinforcing inclined plate. Locking bolts rotate on both sides of the end of the supporting cross bar. A sliding supporting rod slides inside the supporting cross bar, and the end of the sliding supporting rod is fixed to the side surface of the outer formwork body of the precast box girder through a fixing bolt.

[0012] Preferably, the connecting component is a connecting seat arranged at the bottom end of the third threaded rod. A rotating ring rotates inside the connecting seat, and the surface of the rotating ring is welded and fixed to the bottom end of the third threaded rod.

[0013] Preferably, the pressing component includes a main lower pressing plate welded and fixed at the middle position of the lower surface of the connecting seat. Four reinforcing rods are welded and fixed at the edge of the connecting seat, and an auxiliary lower pressing plate is welded at the end of the reinforcing rods. The lower surfaces of the main lower pressing plate and the auxiliary lower pressing plate contact the surface of the outer formwork body of the precast box girder.

[0014] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0015] By designing the strengthening and supporting mechanism, the top end of the lower reinforcement steel plate and the end of the reinforcing inclined plate can be made to contact the lower surface of the pressing bar plate and be fixed by bolts. Then, the sliding supporting rod slides inside the supporting cross bar, is opened and the locking bolt is fixed. The end of the sliding supporting rod is fixed to the side surface of the outer formwork body of the precast box girder through bolts. Thus, when the pressing bar plate is adjusted under pressing, the end of the pressing bar plate is strengthened and supported, and the pressing operation is more stable when the pressing bar plate is pressed down, and it is not easy to deform. The outer formwork body of the precast box girder and the inner formwork are more firmly pressed and installed, and the strengthening and supporting and pressing effect of the inner formwork pressing bar main body on the inner formwork of the precast box girder is improved. Brief Description of the Drawings

[0016] Figure 1 is a schematic structural view of the present utility model;

[0017] Figure 2 for the present utility model Figure 1 is an enlarged schematic structural view of part A in the present utility model;

[0018] Figure 3 for the present utility model Figure 1 is an enlarged schematic structural view of part B in the present utility model;

[0019] Figure 4 is a schematic structural view of the connecting seat, reinforcing rod and auxiliary lower pressing plate of the present utility model;

[0020] In the figure: 100, main body of the internal die pressing bar; 101, external formwork body of the precast box girder; 102, internal die body; 103, pressing bar plate; 1031, lower reinforcing steel plate; 1032, reinforcing inclined plate; 1033, supporting cross bar; 1034, locking bolt; 1035, sliding supporting rod; 104, nut one; 105, threaded rod two; 106, clamping body; 107, hook; 108, threaded rod three; 1081, connecting seat; 1082, rotating ring; 1083, reinforcing rod; 1084, main lower pressing plate; 1085, auxiliary lower pressing plate; 109, nut four. Detailed Description of the Preferred Embodiment

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0022] Please refer to Figures 1 to 4, the utility model provides a technical solution: a pressing bar for the internal mold of a precast box girder, which includes a main body 100 of the pressing bar for the internal mold. The main body 100 of the pressing bar for the internal mold includes an outer template body 101 of the precast box girder. Inside the outer template body 101 of the precast box girder on both sides of the outer template body 101 of the precast box girder, there is an internal mold body 102. On the upper surface of the outer template body 101 of the precast box girder, there is a pressing bar plate 103. At both ends of the pressing bar plate 103, there is a second threaded rod 105. At the top of the second threaded rod 105, a first nut 104 rotates on the surface of the pressing bar plate 103. At the bottom end of the second threaded rod 105, there is a welded and fixed clamping body 106. At the end of the clamping body 106, there is a hooked ring 107 engaged. And the hooked ring 107 is cast in the ground on one side of the outer template body 101 of the precast box girder by concrete. The clamping body 106 is engaged inside the hooked ring 107. By rotating the first nut 104 at the top of the second threaded rod 105, the second threaded rod 105 and the clamping body 106 are pulled and tightly pressed and fixed, so as to press down the pressing bar plate 103 on the surface of the precast box girder template and tightly install it. At the middle position of the pressing bar plate 103, there are two third threaded rods 108. At the top of the third threaded rod 108, a fourth nut 109 rotates on the surface of the pressing bar plate 103. Then, the third threaded rod 108 is moved downward to further extrude the middle position between the outer template body 101 of the precast box girder and the internal mold body 102. On the main body 100 of the pressing bar for the internal mold, there is also provided:

[0023] A strengthening support mechanism, and this strengthening support mechanism includes strengthening support components arranged at both ends of the lower surface of the pressing bar plate 103. At the connection between the end of the strengthening support component and the side surface of the outer template body 101 of the precast box girder, there is an extended support and fixation component. After the pressing bar plate 103 is fixed on the upper surface of the outer template body 101 of the precast box girder, the two ends of the pressing bar plate 103 are strengthened and supported by the strengthening support mechanism, and the pressing operation is more stable, not easily deformed, and the outer template body 101 of the precast box girder and the internal mold body 102 are more tightly fastened and installed, improving the strengthening support and pressing effect of the main body 100 of the pressing bar for the internal mold on the internal mold of the precast box girder.

[0024] In order to facilitate the strengthening of the support for both ends of the pressing bar plate 103 through the strengthening support component, and to prevent it from deforming easily during pressing, in this embodiment, preferably, the strengthening support component includes a lower reinforcement steel plate 1031 fixed to both ends of the lower surface of the pressing bar plate 103 through fixing bolts. The second threaded rod 105 penetrates through the inside of the lower reinforcement steel plate 1031, facilitating the fixing of the lower reinforcement steel plate 1031 to the lower surface of the pressing bar plate 103 for support connection. One side of the bottom end of the lower reinforcement steel plate 1031 is welded and fixed with a reinforcing inclined plate 1032. The top end of the reinforcing inclined plate 1032 is fixed to the lower surface of the pressing bar plate 103 through fixing bolts. After the lower reinforcement steel plate 1031 is fixed, the top end of the reinforcing inclined plate 1032 contacts the lower surface of the pressing bar plate 103 and is fixed again through bolts. The end of the pressing bar plate 103, the lower reinforcement steel plate 1031, and the reinforcing inclined plate 1032 form a triangular structure, thereby strengthening the support connection of the pressing bar plate 103, the lower reinforcement steel plate 1031, and the reinforcing inclined plate 1032 in the triangular structure, and pressing more stably.

[0025] In order to facilitate the strengthening of the support for the side surface of the outer formwork body 101 of the precast box girder at the bottom end when the lower reinforcement steel plate 1031 is installed and supported through the extension support component, in this embodiment, preferably, the extension support fixing component includes a support cross bar 1033 welded and fixed to the bottom end of the reinforcing inclined plate 1032. Locking bolts 1034 are rotated on both sides of the end of the support cross bar 1033. A sliding support rod 1035 slides inside the support cross bar 1033. The sliding support rod 1035 can be slid open inside the support cross bar 1033, and the locking bolts 1034 are rotated to fix the sliding support rod 1035, facilitating adjustment and installation. The end of the sliding support rod 1035 is fixed to the side surface of the outer formwork body 101 of the precast box girder through fixing bolts until the end of the sliding support rod 1035 is fixedly installed with the outer formwork body 101 of the precast box girder through bolts.

[0026] A pressing mechanism, and this pressing mechanism includes a connection component provided at the bottom end of the third threaded rod 108. A pressing component is provided on the lower surface and at the edge of the connection component. When both ends of the pressing bar plate 103 are fixed, when the third threaded rod 108 is rotated and moved downward again, the pressing mechanism increases the contact area with the outer formwork body 101 of the precast box girder to squeeze and fix, the pressing is more firm, it is not easy to cause the formwork to rise during concrete pouring, and the pressing tightness of the inner form pressing bar main body 100 at the middle position of the precast box girder inner form is improved.

[0027] In order to facilitate the rotation adjustment of the connecting seat 1081 to assist the pressing position of the auxiliary lower pressing plate 1085 through the connecting component and facilitate the adjustment of the extrusion position according to the installation situation, in this embodiment, preferably, the connecting component is arranged on the connecting seat 1081 at the bottom end of the third threaded rod 108. A rotating ring 1082 is rotated inside the connecting seat 1081. The surface of the rotating ring 1082 is fixedly welded to the bottom end of the third threaded rod 108. The auxiliary lower pressing plate 1085 is adjusted to be pressed and fixed in position for extrusion reinforcement by the rotation of the rotating ring 1082 inside the connecting seat 1081.

[0028] In order to facilitate the increase of the extrusion area between the lower surface of the pressing bar plate 103 and the surface of the outer formwork body 101 of the precast box girder through the pressing component and facilitate the strengthening of the extrusion fixation, in this embodiment, preferably, the pressing component includes a main lower pressing plate 1084 fixedly welded at the middle position of the lower surface of the connecting seat 1081, which can press the main lower pressing plate 1084 against the surface of the outer formwork body 101 of the precast box girder when the connecting seat 1081 is pressed down. Four reinforcing rods 1083 are fixedly welded at the edge of the connecting seat 1081. The auxiliary lower pressing plate 1085 is welded to the end of the reinforcing rod 1083. The lower surfaces of the main lower pressing plate 1084 and the auxiliary lower pressing plate 1085 contact the surface of the outer formwork body 101 of the precast box girder. At the same time, the reinforcing rod 1083 follows the connecting seat 1081 to be pressed down until the auxiliary lower pressing plate 1085 is pressed against the surface of the outer formwork body 101 of the precast box girder, so as to increase the area of extrusion and reinforcement between the outer formwork body 101 of the precast box girder and the inner formwork body 102.

[0029] The working principle and usage process of the present utility model: For this kind of precast box girder inner form pressing bar, when in use, first fix the outer formwork body 101 of the precast box girder at the construction position, fix the inner formwork body 102 inside the outer formwork body 101 of the precast box girder, then engage the clamping body 106 into the hook 107, and rotate the nut one 104 at the top end of the second threaded rod 105 to pull and tightly press the second threaded rod 105 and the clamping body 106, so as to press down the pressing bar plate 103 on the surface of the precast box girder formwork for tight installation;

[0030] Then, before the inner die pressing bar body 100 presses the outer formwork body 101 and the inner formwork body 102 of the precast box girder, the lower reinforcement steel plate 1031 is penetrated through the outer surface of the second threaded rod 105, and the top end is fixed to the lower surface of the pressing bar plate 103 by bolts. The end of the reinforcing inclined plate 1032 contacts the lower surface of the pressing bar plate 103 and is fixed by bolts. Then, the sliding support rod 1035 is slid open inside the support cross bar 1033 and the rotation locking bolt 1034 is fixed. The end of the sliding support rod 1035 is fixed to the side surface of the outer formwork body 101 of the precast box girder by bolts, so as to strengthen the support for the end of the pressing bar plate 103 during the pressing and lowering adjustment of the pressing bar plate 103, make the pressing operation more stable when the pressing bar plate 103 is pressed down, not easily deformed, and more firmly press and install the outer formwork body 101 and the inner formwork body 102 of the precast box girder, improving the strengthening support and pressing effect of the inner die pressing bar body 100 on the inner formwork of the precast box girder;

[0031] Finally, when the pressing bar plate 103 is strengthened to support and press on the surface of the outer formwork body 101 of the precast box girder, the nut four 109 is rotated at the end of the third threaded rod 108 to drive the third threaded rod 108 to press down. When the third threaded rod 108 moves downward, the connecting seat 1081 and the rotating ring 1082 are rotated to adjust the auxiliary lower pressing plate 1085 to the pressing position. When the third threaded rod 108 is further adjusted to drive the connecting seat 1081 to move downward, the main lower pressing plate 1084 and the auxiliary lower pressing plate 1085 are squeezed on the surface of the outer formwork body 101 of the precast box girder, and the outer formwork body 101 of the precast box girder is squeezed to perform an extrusion operation on the inner formwork body 102, facilitating an increase in the contact area for extrusion, making the pressing more firm, not easily causing the formwork to rise during concrete pouring, and improving the extrusion fastening property of the inner die pressing bar body 100 on the middle position of the inner formwork of the precast box girder.

[0032] Although the embodiments of the present invention have been shown and described (see the above detailed description), those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A prefabricated box girder inner mold pressure bar, comprising an inner mold pressure bar body (100), the inner mold pressure bar body (100) comprising a prefabricated box girder outer formwork body (101), inner mold bodies (102) are arranged inside the prefabricated box girder outer formwork body (101) on both sides of the prefabricated box girder outer formwork body (101), a pressure bar plate (103) is arranged on the upper surface of the prefabricated box girder outer formwork body (101), two threaded rods (108) are arranged at the middle position of the pressure bar plate (103), and the top end of the threaded rod (108) is located on the surface of the pressure bar plate (103) and is rotatably provided with a nut (109), characterized in that: The inner molded bar body (100) is also provided with: A reinforcing support mechanism, wherein the reinforcing support mechanism comprises reinforcing support components arranged at both ends of the lower surface of the pressure bar plate (103), and an extending support fixing component is arranged at the connection between the end of the reinforcing support component and the side of the prefabricated box beam outer template body (101); The clamping mechanism comprises a connecting component arranged at the bottom end of the threaded rod three (108), and the lower surface and edge of the connecting component are provided with a clamping component.

2. The prefabricated box girder inner molded bar according to claim 1, characterized in that: Two threaded rods (105) are provided at both ends of the pressure bar plate (103); the top end of the threaded rod (105) is located on the surface of the pressure bar plate (103) and is rotatably provided with a nut (104); the bottom end of the threaded rod (105) is welded and fixed with a clamp (106); the end of the clamp (106) is clamped with a hook (107); and the hook (107) is cast on the ground on one side of the prefabricated box beam outer formwork body (101) through concrete.

3. The prefabricated box girder inner molded bar according to claim 2, characterized in that: The reinforcing support assembly comprises a lower reinforcing steel plate (1031) fixed to both ends of the lower surface of the pressure bar plate (103) by fixing bolts, the threaded rod (105) passes through the interior of the lower reinforcing steel plate (1031), a reinforcing inclined plate (1032) is welded and fixed to one side of the bottom end of the lower reinforcing steel plate (1031), and the top end of the reinforcing inclined plate (1032) is fixed to the lower surface of the pressure bar plate (103) by fixing bolts.

4. The prefabricated box girder inner molded bar according to claim 3, characterized in that: The end of the pressure bar plate (103), the lower reinforcement steel plate (1031) and the reinforcement inclined plate (1032) form a triangular structure.

5. The prefabricated box girder inner molded bar according to claim 3, characterized in that: The extended support fixing assembly comprises a support cross bar (1033) welded and fixed to the bottom end of the reinforcing inclined plate (1032), locking bolts (1034) are rotatably provided on both sides of the end of the support cross bar (1033), a sliding support rod (1035) is slidably provided inside the support cross bar (1033), and the end of the sliding support rod (1035) is fixed to the side of the prefabricated box beam outer formwork body (101) by fixing bolts.

6. The prefabricated box girder inner molded bar according to claim 1, characterized in that: The connection assembly is arranged on a connection seat (1081) at the bottom end of the threaded rod three (108), a rotating ring (1082) is arranged inside the connection seat (1081), and the surface of the rotating ring (1082) is welded and fixed to the bottom end of the threaded rod three (108).

7. The prefabricated box girder inner molded bar according to claim 6, characterized in that: The clamping assembly comprises a main lower pressure plate (1084) welded and fixed at the middle position of the lower surface of the connecting seat (1081), four reinforcing rods (1083) are welded and fixed at the edge of the connecting seat (1081), and auxiliary lower pressure plates (1085) are welded at the ends of the reinforcing rods (1083), and the lower surfaces of the main lower pressure plate (1084) and the auxiliary lower pressure plate (1085) contact the surface of the prefabricated box beam outer formwork body (101).

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