Mold closing mechanism of T-beam pouring mold

Abstract

The utility model relates to a mold closing mechanism of a T-beam pouring mold, which comprises a track, a mold base connected to the track in a sliding manner, a T-beam pouring mold arranged on the mold base and a mold closing mechanism, the T-beam pouring mold comprises a bottom mold plate supported on a mold base, two side molds and two end molds, the two side molds and the two end molds are transversely distributed on the mold base in an opening and closing mode, and a cavity for pouring a T-beam is defined by the bottom mold plate, the side molds and the end molds. The mold closing device comprises two telescopic top frames which are distributed on the two sides of the rail and used for abutting against the two side molds in a one-to-one correspondence mode, each telescopic top frame comprises a mold closing part fixing frame and a telescopic top rod which is connected to the mold closing part fixing frame and stretches out and draws back towards the rail, and the telescopic top rods are detachably connected with the side molds. The die assembly structure has the advantage of simple die assembly structure, and solves the problem that the die assembly structure is complicated when the T beam is manufactured.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge construction, in particular to a mold closing mechanism for a T-beam casting mold. Background Art

[0002] The T-beam includes a middle beam extending along the longitudinal bridge direction and a top beam connected to the upper end of the middle beam, and the top beam outputs the middle beam to both sides along the transverse bridge. The existing T-beam casting mold has complex mold closing equipment; the shrinkage or expansion caused by concrete curing (depending on the properties of concrete, some shrinkage, some expansion) will affect the surface strength effect of the cast T-beam body. Utility Model Content

[0003] The first purpose of the utility model is to provide a mold clamping mechanism of a T-beam casting mold with a simple mold clamping structure, thereby solving the problem of complex mold clamping structure during T-beam production.

[0004] The second purpose of the utility model is to further provide a T-beam casting mold with a cavity that can change with the expansion and contraction of concrete, thereby solving the problem that the existing mold cavity is fixed and does not change, causing the expansion or contraction of concrete during solidification to affect the surface strength of the T-beam body.

[0005] The above technical problems are solved by the following technical solutions: a clamping mechanism for a T-beam casting mold, the T-beam comprising an intermediate beam extending along a longitudinal bridge direction and a top beam connected to the upper end of the intermediate beam, the top beam extending out of the intermediate beam to both sides along a transverse bridge, and characterized in that it comprises a track, a mold base slidably connected to the track, a T-beam casting mold arranged on the mold base, and a clamping mechanism, the T-beam casting mold comprising a bottom mold plate supported on the mold base, two side molds and two end molds distributed on the mold base transversely and capable of opening and closing, the bottom mold plate, the side molds and the end molds forming a cavity for casting the T-beam, the clamping mechanism comprising two telescopic top frames distributed on both sides of the track for supporting the two side molds in a one-to-one manner, the telescopic top frame comprising a clamping portion fixing frame and a telescopic top rod connected to the clamping portion fixing frame and extending toward the track, the telescopic top rod being detachably connected to the side molds. The process of T-beam production is: the T-beam casting mold is maintained in a closed state through the mold closing mechanism, concrete is poured in the T-beam casting mold, and after the concrete solidifies, it forms the middle beam together with the middle beam steel frame and the top beam together with the top beam steel frame.

[0006] Preferably, the telescopic push rod is a hydraulic cylinder structure, which has a good fixing effect.

[0007] As a preference, it also includes a pressure plate located above between the two side molds and a pressure plate lifting cylinder for driving the pressure plate to rise and fall, the side mold includes a plate body for enclosing a cavity of a T-beam and a template frame supporting the plate body, the telescopic top rod is connected to the template frame, the plate body includes an upper vertical plate aligned with the side of the top beam, an inclined plate supporting the top beam, and a lower vertical plate aligned with the side of the middle beam, which are arranged in sequence from top to bottom, the inclined plate and the lower vertical plate are supported on the template frame by springs, and the pressure plate is located between the upper vertical plates of the two side molds and is sealed and slidably connected together. When in use, after pouring concrete, the pressure plate is covered on the upper surface of the uncured T-beam and then driven downward by the pressure plate lifting cylinder to apply the preload force set by the spring, so that the plate body can reliably hold the T-beam regardless of expansion or contraction during concrete curing, thereby ensuring the compactness of the T-beam produced by the casting mold.

[0008] Preferably, a connecting strip aligned with the connection between the top beam and the middle beam is provided between the inclined plate and the lower vertical plate, a plurality of connecting strip adjusting screws are threadedly connected to the formwork frame, a push-pull head is provided at the end of the connecting strip adjusting screw, the connecting strip is provided with a plurality of push-pull blind holes, the push-pull head is passed through the push-pull blind holes to drive the connecting strip to extend and retract toward the cavity, the inclined plate is connected to the connecting strip through an upper elastic sealing strip, the upper elastic sealing strip is sealed and fixed to the upper inclined plate and the connecting strip, the lower vertical plate is connected to the connecting strip through a lower elastic sealing strip, the lower elastic sealing strip is sealed and fixed to the lower vertical plate and the connecting strip. During the process of assembling the T-beam casting mold, if the concrete used is the concrete that shrinks during solidification, the connecting strip is adjusted to be flush with the inclined plate and the lower vertical piece through the connecting strip adjusting screw; if the concrete used is the concrete that expands during solidification, the connecting strip is adjusted to be recessed in the connection between the inclined plate and the lower vertical piece through the connecting strip adjusting screw. The depth of the recessed connection between the inclined plate and the lower vertical piece is greater than the expansion amount of the concrete after solidification, so that the connection between the middle beam and the top beam of the cast T-beam can have a convex strip extending in the longitudinal direction of the bridge, thereby improving the strength of the connection.

[0009] Preferably, the cross section of the connecting strip is triangular.

[0010] Preferably, the lower end of the side mold is further provided with a base frame connected to the mold base, the base frame is provided with a plurality of inclined support rails distributed along the longitudinal bridge direction, one end of the inclined support rail facing the middle of the cavity is higher and the other end is lower, and the lower end of the side mold is provided with a slider slidably connected to the inclined support rail. The mold can be closed by pulling down obliquely, thereby reducing the impact on the T-beam during mold closing and making mold closing more labor-saving.

[0011] Preferably, the inclined support track includes an upper plate and a middle plate connected to the lower surface of the upper plate, and both ends of the upper plate extend out of the middle plate. Both ends of the lower surface of the slider are provided with slide grooves, and the edges of both ends of the upper plate are correspondingly penetrated and slidably connected in the slide grooves. The side mold can be limited in the longitudinal direction of the bridge, thereby improving the accuracy of the mold closing.

[0012] Preferably, a positioning block is provided at the lower end of the oblique support track to prevent the slider from falling out of the support track, so that the side mold can be turned over and fall out.

[0013] The utility model has the following beneficial effects: the mold clamping mechanism has a simple structure, and the change of the solidified volume has little effect on the quality of the concrete. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the utility model;

[0015] Figure 2 for Figure 1 A local enlarged schematic diagram of D;

[0016] Figure 3 for Figure 1 A local enlarged schematic diagram of point E.

[0017] In the figure: middle beam 1, top beam 2, track 54, mold base 55, bottom template 60, side template 61, bottom template frame 62, bottom plate 63, template frame 64, upper vertical plate 65, inclined plate 66, lower vertical plate 67, spring 68, connecting strip 69, connecting strip adjusting screw 70, push-pull head 71, upper elastic sealing strip 72, lower elastic sealing strip 73, base frame 74, oblique support track 75, upper plate 76, middle plate 77, positioning block 78, pressure plate 79, pressure plate lifting cylinder 80, slider 90. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments; based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0019] See also Figures 1 to 3, a mold closing mechanism for a T-beam casting mold, the T-beam includes an intermediate beam 1 extending along the longitudinal bridge direction and a top beam 2 connected to the upper end of the intermediate beam. The top beam outputs the intermediate beam to both sides along the transverse bridge. The utility model includes a track 54, a mold base 55 slidably connected to the track, a T-beam casting mold 56 arranged on the mold base, and a mold closing mechanism 57 distributed beside the track. The T-beam casting mold includes a bottom template 60 connected to the mold base, two side molds 61 and two end molds distributed on the mold base in a transverse and openable manner, and the bottom template, the side molds and the end molds surround a cavity for casting the T-beam. The bottom template includes a bottom template base frame 62 and a bottom plate 63 fixed on the bottom template base frame. The side mold includes a plate body and a template frame 64 supporting the plate body. The plate body includes an upper vertical plate 65 aligned with the side of the top beam, an inclined plate 66 supporting the top beam, and a lower vertical plate 67 aligned with the side of the intermediate beam, which are arranged in sequence from top to bottom. The inclined plate and the lower vertical plate are supported on the template frame by springs 68. A connecting strip 69 is provided between the inclined plate and the lower vertical plate, which is aligned with the connection between the top beam and the middle beam. The template frame is threadedly connected with a plurality of connecting strip adjustment screws 70. A push-pull head 71 is provided at the end of the connecting strip adjustment screw, and the connecting strip is provided with a plurality of push-pull blind holes. The push-pull head is inserted into the push-pull blind hole to drive the connecting strip to extend and retract toward the cavity. The inclined plate is connected to the connecting strip through an upper elastic sealing strip 72, and the upper elastic sealing strip is sealed and fixed with the upper inclined plate and the connecting strip. The lower vertical plate is connected to the connecting strip through a lower elastic sealing strip 73, and the lower elastic sealing strip is sealed and fixed with the lower vertical plate and the connecting strip. The cross section of the connecting strip is triangular. The lower end of the side mold is also provided with a bottom frame 74 connected to the mold base. The bottom frame is provided with a plurality of inclined support rails 75 distributed along the longitudinal bridge direction, and the inclined support rails are high at one end and low at the other end toward the middle of the cavity. The lower end of the side mold is provided with a slider 90 slidably connected to the inclined support rails. The inclined support track includes an upper plate 76 and a middle plate 77 connected to the middle of the lower surface of the upper plate, and the two ends of the upper plate extend out of the middle plate. The two ends of the lower surface of the slider are provided with slide grooves, and the two end edges of the upper plate are correspondingly penetrated and slidably connected in the slide grooves. The lower end of the inclined support track is provided with a positioning block 78 to prevent the slider from falling out of the support track.

[0020] The process of casting a T-beam is as follows: assemble the T-beam casting mold and build the middle beam steel bar skeleton and the top beam steel bar skeleton inside the T-beam casting mold, maintain the side molds in a closed state through the mold closing mechanism, pour concrete in the T-beam casting mold, and after the concrete solidifies, form the middle beam together with the middle beam steel bar skeleton and form the top beam together with the top beam steel bar skeleton.

[0021] After pouring the concrete, the pressure plate is placed on the upper surface of the uncured T-beam and then driven downward by the pressure plate lifting cylinder to apply the preload force set by the spring, so that the plate can reliably hold the T-beam regardless of expansion or contraction during the curing of the concrete, thereby ensuring the compactness of the T-beam cast in the mold. Specifically: In the first step, during the mold assembly process, if the concrete used is a cured and shrunk concrete, the connecting strip is adjusted by the connecting strip adjusting screw to be flush with the inclined plate and the lower vertical piece; if the concrete used is a cured and expanded concrete, the connecting strip is adjusted by the connecting strip adjusting screw to be recessed in the connection between the inclined plate and the lower vertical piece. The depth of the connecting strip recessed in the connection between the inclined plate and the lower vertical piece is greater than the expansion amount of the concrete after curing, so that the connection between the middle beam and the top beam of the cast T-beam can have a convex strip extending along the longitudinal bridge direction, thereby improving the strength of the connection.

Claims

1. A mold clamping mechanism for a T-beam casting mold, wherein the T-beam comprises an intermediate beam extending along a longitudinal bridge direction and a top beam connected to the upper end of the intermediate beam, wherein the top beam extends out of the intermediate beam to both sides along a transverse bridge direction, and wherein: It includes a track, a mold base slidably connected to the track, a T-beam casting mold arranged on the mold base, and a clamping mechanism. The T-beam casting mold includes a bottom mold plate supported on the mold base, two side molds and two end molds distributed on the mold base transversely and capable of opening and closing. The bottom mold plate, the side molds and the end molds surround a cavity for casting the T-beam. The clamping mechanism includes two telescopic top frames distributed on both sides of the track for supporting the two side molds in a one-to-one manner. The telescopic top frame includes a clamping part fixing frame and a telescopic top rod connected to the clamping part fixing frame and extending toward the track. The telescopic top rod is detachably connected to the side molds.

2. The mold clamping mechanism of a T-beam casting mold according to claim 1, characterized in that: The telescopic push rod is a hydraulic cylinder structure.

3. A mold clamping mechanism for a T-beam casting mold according to claim 1 or 2, characterized in that: It also includes a pressure plate located above between the two side molds and a pressure plate lifting cylinder for driving the pressure plate to rise and fall. The side mold includes a plate body for enclosing a T-beam cavity and a template frame supporting the plate body. The telescopic top rod is connected to the template frame. The plate body includes an upper vertical plate aligned with the side of the top beam, an inclined plate supporting the top beam, and a lower vertical plate aligned with the side of the middle beam, which are arranged in sequence from top to bottom. The inclined plate and the lower vertical plate are supported on the template frame by springs. The pressure plate is located between the upper vertical plates of the two side molds and is sealed and slidably connected together.

4. The mold clamping mechanism of a T-beam casting mold according to claim 3, characterized in that: A connecting strip aligned with the connection between the top beam and the middle beam is provided between the inclined plate and the lower vertical plate, a plurality of connecting strip adjusting screws are threadedly connected to the template frame, a push-pull head is provided at the end of the connecting strip adjusting screw, the connecting strip is provided with a plurality of push-pull blind holes, the push-pull head is passed through the push-pull blind holes to drive the connecting strip to extend and retract toward the cavity, the inclined plate is connected to the connecting strip through an upper elastic sealing strip, the upper elastic sealing strip is sealed and fixed to the upper inclined plate and the connecting strip, the lower vertical plate is connected to the connecting strip through a lower elastic sealing strip, the lower elastic sealing strip is sealed and fixed to the lower vertical plate and the connecting strip.

5. The mold clamping mechanism of a T-beam casting mold according to claim 4, characterized in that: The cross section of the connecting strip is a triangle.

6. A mold clamping mechanism for a T-beam casting mold according to claim 1 or 2, characterized in that: The lower end of the side mold is also provided with a base frame connected to the mold base, and the base frame is provided with a plurality of inclined support rails distributed along the longitudinal bridge direction, and the inclined support rails are higher at one end facing the middle of the cavity and lower at the other end, and the lower end of the side mold is provided with a slider slidably connected to the inclined support rails.

7. The mold clamping mechanism for a T-beam casting mold according to claim 6, characterized in that: The inclined support rail includes an upper plate and a middle plate connected to the lower surface of the upper plate. The two ends of the upper plate extend out of the middle plate. The two ends of the lower surface of the slider are provided with sliding grooves. The two end edges of the upper plate are correspondingly penetrated and slidably connected in the sliding grooves.

8. The mold clamping mechanism for a T-beam casting mold according to claim 6, characterized in that: A positioning block is provided at the lower end of the oblique support track to prevent the sliding block from falling out of the support track.

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