CN115787514A - Be suitable for continuous variable cross section hydraulic pressure and adjust centre form - Google Patents

Abstract

The invention provides an internal mold suitable for continuously variable cross-section hydraulic adjustment. The hydraulic internal mold includes a hydraulic skeleton and a template; the template includes a top mold, a side mold, and a bottom mold; the hydraulic skeleton is arranged inside the template; Telescopic skeleton, the telescopic skeleton includes cross braces, trusses, and outriggers. The two trusses are correspondingly distributed at both ends of the cross braces, so as to move away from or approach each other with the sliding of the two trusses; The two ends of the hydraulic inner mold rotate along the section of the hydraulic inner mold with respect to the hinge point to drive the two side molds to rotate to the center line of the truss. Set up a truss that moves along the length of the cross brace. The movement of the truss drives the top form or side form on both sides to shrink, so as to separate from the concrete after pouring, so as to achieve rapid demoulding and improve disassembly efficiency.

Description

A hydraulically adjustable internal mold suitable for continuous variable cross-section

technical field

The invention belongs to the technical field of bridge construction equipment, and in particular relates to an internal mold suitable for hydraulic adjustment of continuously variable section.

Background technique

Cantilever pouring construction refers to a construction method in which concrete beams are poured section by section to the mid-span symmetrically and balancedly with special equipment on both sides of the bridge centered on the pier, and prestressed section by section. The hanging basket bridge building machine is a special equipment that is used to bear the weight of the beam body and the construction load when pouring the concrete beam body by the cantilever method, and can move forward section by section. During the construction process of the traditional bridge building machine, it is necessary to set the inner mold corresponding to the inner wall of the shell to cooperate with the hanging basket bridge building machine to build the bridge. However, the existing inner mold is generally supported by the formwork, which is difficult to disassemble and affects the construction. efficiency.

Therefore, it is necessary to provide an improved technical solution for the above-mentioned deficiencies in the prior art.

Contents of the invention

The purpose of the present invention is to overcome the shortcomings in the above-mentioned prior art, and the present invention provides a hydraulically adjustable internal mold suitable for continuously variable cross-section.

In order to achieve the above object, the present invention provides the following technical solutions:

A hydraulically adjustable internal mold suitable for continuously variable cross-section, the hydraulic internal mold includes a hydraulic skeleton and a template;

The templates include:

A top mold, the two top molds are arranged on the top of the hydraulic inner mold and are located on both sides of the hydraulic inner mold;

Side molds, the two side molds are respectively arranged on both sides of the hydraulic inner mold, and extend upward to the corresponding top mold;

A bottom mold, the bottom mold is arranged at the bottom of the hydraulic inner mold, and the two sides of the bottom mold are respectively detachably connected to the bottoms of the two side molds;

The hydraulic skeleton is arranged inside the template, and the hydraulic skeleton includes a plurality of equidistantly distributed telescopic skeletons, and the telescopic skeletons include:

Cross brace;

Truss, the two trusses are correspondingly distributed at the two ends of the cross brace, and are slidably assembled along the length direction of the cross brace, and the two top molds are respectively connected to the two cross braces to follow the two The sliding of each of the trusses away from or close to each other;

The two outriggers are respectively hinged on the two ends of the two trusses away from each other, and rotate along the section of the hydraulic inner mold with respect to the hinge point, so as to drive the two side molds toward the Truss centerline rotation.

Preferably, a supplementary mold is provided above the two top molds, and the supplementary mold is located between the two top molds to cover the gap between the two top molds.

Preferably, the telescopic frame further includes a push rod, the push rod is arranged in the middle of the cross brace, and the top of the push rod correspondingly pushes against the supplementary mold.

Preferably, a convex line extending toward the ejector pin is provided at the center line of the supplementary mold, and a sleeve corresponding to the ejector pin is provided at the bottom of the boss.

Preferably, a slideway corresponding to the truss is provided on the cross brace, and the truss is slidably fitted in the slideway;

Two first push rods are arranged on the truss, and the two first push rods respectively drive the two trusses to move along the slideway.

Preferably, a second push rod is hinged between the leg and the truss.

Preferably, the side form is fixed on the leg by bolts;

The top form is fixed on the truss by bolts.

As a preference, support rails are provided under both sides of the cross brace, the support rails are I-shaped steel, one end of the support rail is anchored on the top surface of the inner cavity of the cast bridge, and the other end is fixed on the bridge building machine;

The bottom of the cross brace is provided with two support wheels extending towards the sides of the support rail respectively, and a third push rod is arranged above the support rail, and the third push rod is facing the bottom surface of the cross brace.

Preferably, any two adjacent telescopic frames are fixed by connecting rods, and the connecting rods are fixed on the cross braces by bolts.

Preferably, the bottom of the side form is provided with a transition plate whose bottom edge is an inclined edge, and the bottom form is fixed on the transition plate in a detachable manner.

Beneficial effects: a truss moving along the length direction of the cross brace is provided, and the movement of the truss drives the top form or side form on both sides to shrink, thereby separating from the poured concrete, so as to realize rapid demoulding and improve disassembly efficiency.

Description of drawings

The accompanying drawings constituting a part of the present application are used to provide a further understanding of the present invention, and the schematic embodiments and descriptions of the present invention are used to explain the present invention, and do not constitute an improper limitation of the present invention. in:

Fig. 1 is a schematic structural diagram of a hydraulic internal mold in a specific embodiment provided by the present invention;

Fig. 2 is a schematic sectional view of a hydraulic internal mold in a specific embodiment provided by the present invention;

Fig. 3 is a schematic diagram of the structure of hydraulic internal mold expansion in the specific embodiment provided by the present invention;

Fig. 4 is a schematic structural diagram of hydraulic internal mold shrinkage in a specific embodiment provided by the present invention;

Fig. 5 is the structural diagram of mending mold in the specific embodiment provided by the present invention;

FIG. 6 is an enlarged schematic diagram of point A in FIG. 1 .

In the figure: 1. top mold; 2. push rod; 3. third push rod; 4. truss; 5. first push rod; 6. second push rod; 7. outrigger; 8. side form; 9. Support rail; 10, support wheel; 11, bottom mold; 12, front upper beam; 13, anchor rod; 14, transition plate; 15, casing; slip sleeve.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below, obviously, the described embodiments are only some of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments of the present invention belong to the protection scope of the present invention.

In the description of the present invention, the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", " The orientations or positional relationships indicated by "top", "bottom", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and do not require that the present invention must be constructed and operated in a specific orientation, so they cannot be understood as Limitations on the Invention. The terms "connected" and "connected" used in the present invention should be understood in a broad sense, for example, it can be fixedly connected or detachably connected; it can be directly connected or indirectly connected through intermediate parts, for ordinary A skilled person can understand the specific meanings of the above terms according to specific situations.

The present invention will be described in detail below with reference to the accompanying drawings and examples. It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

As shown in Figures 1-6, the present invention provides a hydraulically adjustable inner mold suitable for continuous variable cross-section, which can be disassembled and moved quickly, so as to quickly carry out pouring construction and transfer of bridge segments. In this implementation, the hydraulic inner mold Including the hydraulic skeleton and formwork, wherein the template is located in the circumferential direction of the hydraulic skeleton, and the formwork is supported by the hydraulic skeleton to maintain the shape of the corresponding bridge inner cavity, so as to match the outer mold set on the bridge-building machine basket to form the corresponding bridge. mold.

Wherein, the template includes a top mold 1, a side mold 8 and a bottom mold 11, and the two top molds 1 are arranged on the top of the hydraulic inner mold, and are located on both sides of the hydraulic inner mold, so as to splice on both sides of the centerline of the hydraulic skeleton, There are also two side molds 8, and the two side molds 8 are respectively arranged on both sides of the hydraulic inner mold, and extend upward to the corresponding top mold 1; the bottom mold 11 is arranged on the bottom of the hydraulic inner mold, and the two sides of the bottom mold 11 are respectively The bottoms of the two side molds 8 are detachably connected, and the circumferential direction of the hydraulic skeleton is spliced and closed by splicing the top mold 1, the side mold 8 and the bottom mold 11; the hydraulic skeleton is arranged inside the formwork, and the hydraulic skeleton includes multiple The telescopic skeleton of distance distribution, the telescopic skeleton comprises cross brace 17, truss 4 and support leg 7, and cross brace 17 distributes horizontally along the width direction of bridge, and two trusses 4 are distributed at the two ends of cross brace 17 correspondingly, and along cross brace 17 The two topforms 1 are respectively connected to the two cross braces 17 to move away from or approach each other with the sliding of the two trusses, thereby driving the two topforms 1 to move away from or approach each other, and then in the bridge width direction Shrink on the top, so that the inner mold is separated from the solidified concrete; the two legs 7 are respectively hinged at the two ends of the two trusses 4 away from each other, and rotate along the section of the hydraulic inner mold with respect to the hinge point, when it is necessary to remove the inner mold , remove the bottom mold 11, and then rotate the two side molds 8 to the centerline of the truss 4 through the rotation of the legs 7, thereby reducing the longitudinal height of the inner mold, so that the top mold 1 can be separated from the bridge top mold 1.

In an optional embodiment, a supplementary mold 16 is provided above the two top molds 1, and the supplementary mold 16 is located between the two top molds 1, and its lower surface is close to the upper surfaces of the two top molds 1 for covering the two top molds. The gap between the top molds 1, when the two trusses 4 are far away from each other, the inner mold is opened, the two top molds 1 are far away from each other, the gap between the two becomes larger, and the gap can be blocked by setting the repair mold 16 , to ensure normal pouring requirements.

In this implementation, the telescopic skeleton also includes a push rod 2, which is arranged in the middle of the cross brace 17, and the top of the push rod 2 corresponds to the push-contact patching mold 16, and the push rod 2 can be a telescopic rod, such as an air cylinder, a hydraulic cylinder or Studs, preferably studs, can adjust the height of the studs to match the patching mold 16, and can eject the patching mold 16 from bottom to top to ensure that the patching mold 16 will not be deformed by force during the pouring process; Die 16 midline place is provided with the protruding line that extends to ejector pin 2, strengthens the intensity of mending mold 16 by protruding line, in addition, when two top molds 1 are close to each other, can make two top molds 1 as far as possible Get closer to increase the amount of deformation in the horizontal direction; the bottom of the boss is provided with a sleeve 15 corresponding to the ejector rod 2, and the ejector rod 2 can be inserted into the sleeve 15, and the side of the sleeve 15 is provided with perforations, and the pins pass through the sleeve in turn 15 and ejector pin 2, ejector pin 2 and mending mold 16 are fixed.

In an optional embodiment, the cross brace 17 is provided with a slideway corresponding to the truss 4, and the truss 4 is slidably fitted in the slideway. In this embodiment, the cross brace 17 and the truss 4 can be I-beams. There are guide plates 18 protruding upward on both sides of 17 to form slideways. The width of the guide plates 18 in the length direction of the cross brace 17 is relatively narrow, and they are located at both ends of the cross brace 17 to correspond to the two trusses 4. On the trusses 4, there are Two first push rods 5, the two first push rods 5 respectively drive the two trusses 4 to move along the slideway, can drive the two trusses 4 to drive the top mold 1, the first push rods 5 are hydraulic cylinders, and are correspondingly connected to the On the hydraulic station, the truss 4 has a certain height in the longitudinal direction, and its upper surface is an inner wall adapted to the shape of the inner cavity of the bridge, thereby supporting the top form 1 . In this implementation, a sliding sleeve 19 is provided at one end of the truss 4 close to the middle of the cross brace 17. The sliding sleeve 19 is correspondingly sleeved on the cross brace 17, and is adapted to the cross section of the cross brace 17. It can slide about the length direction of the cross brace, and can The moving track of the truss 4 is further defined.

In an optional embodiment, a second push rod 6 is hinged between the leg 7 and the truss 4, the second push rod 6 is a hydraulic cylinder, and is correspondingly connected to the hydraulic station, and one end of the second push rod 6 is hinged on Below the truss 4, the other end is hinged on the inner side of the support leg 7 to form a triangle with the support leg 7 and the truss 4, and then the drive of the support leg 7 can be performed quickly.

In an optional embodiment, both the legs 7 and the cross frame can be made of I-beam or square steel, the side form 8 is fixed on the leg 7 by bolts; the top form 1 is fixed on the truss 4 by bolts.

In an optional embodiment, support rails 9 are provided under both sides of the cross brace 17, and the support rails 9 are I-shaped steel, which can support the hydraulic frame. Specifically, one end of the I-shaped steel passes through the anchor rod 13 or anchor cables etc. are anchored on the inner cavity top surface of the cast bridge, and the other end is fixed on the bridge building machine (the front upper beam 12 of the hanging basket, the front upper beam connects the ends of the two main girders of the bridge building machine) to This carries out the I-beam support; the bottom of the cross brace 17 is provided with two support wheels 10 extending to the sides of the I-beam respectively, and the support wheels 10 are fixed on the cross brace 17 in a detachable manner through the wheel seat. There is a third push rod 3 on the top, the third push rod 3 can be a hydraulic cylinder, which is correspondingly connected to the hydraulic station, the third push rod 3 is facing the bottom surface of the cross brace 17, and the hydraulic frame and the inner mold can be lifted up by stretching .

During pouring, the support rail 9 is fixed according to the size of the internal mold and the cross section of the bridge. After the fixation is completed, the telescopic skeleton is hoisted to the support rail 9 for assembly and splicing, and then the support wheel 10 is installed, and the third push rod 3 shrinks to make the The support wheel acts on the top of the wing plate at the bottom of the support rail 9, and then a plurality of telescopic skeletons are docked, and any adjacent two telescopic skeletons are fixed by connecting rods, and the connecting rods are fixed on the cross brace 17 by bolts. Install top mold 1, side mold 8, supplementary mold 16 and bottom mold 11 after the hydraulic skeleton butt joint is completed, lift up the height of the inner mold through the third push rod 3, and then push outward through the first push rod 5 Lift up to make the inner mold fully propped in place, and then pouring can be performed (first segment).

After pouring is completed, loosen the front upper beam and the support rail, drive the bridge building machine basket and the front upper beam 12 to move forward simultaneously (only the connection relationship between the support rail and the front upper beam is simply shown in the figure), and the support rail 9 Extend and assemble forward with the hanging basket, connect the support rail to the front upper beam, remove the bottom mold 11 inside the hydraulic skeleton, and drive the inner molds on both sides to move inward through the retraction of the first push rod 5, so that the side molds 8 are released Then the second push rod 6 shrinks to rotate the two side molds 8 to the middle. At this time, there is a certain gap between the bottom of the side mold 8 and the bottom surface of the inner cavity of the bridge, and the third push rod 3 shrinks, so that the top mold 1 and the supplementary mold 16 are demoulded ; Then the hydraulic skeleton is advanced along the support rail 9, and the inner mold is opened after advancing in place, then the bottom mold 11 is installed, and the next section (the second section) can be carried out after the third push rod 3 is jacked up. )pouring.

During the pouring process of the second section, the support rail 9 at the first section is removed, and the corresponding support rail 9 is riveted at the first section, and the two adjacent support rails 9 are fixed by bolts, Specifically, an I-shaped steel segment is set at the bottom of the support rail 9 and fixed to the two support rails 9 by bolts.

In this embodiment, the support rail is extended and assembled after the concrete reaches the preset strength. During the extended assembly process, under the action of the support wheel, the support wheel stops the lower surface of the upper wing of the I-beam after the support rail is released. This ensures that the support rail will not fall off.

In this implementation, for the construction of bridges with continuously variable cross-sections, the bottom of the side form 8 is provided with a transition plate 14 whose bottom edge is an inclined edge, and the bottom form 11 is fixed on the transition plate 14 in a detachable manner. During the pouring process, When the bottom formwork 11 of the bridge is tilted, the transition plate 14 is installed so that the inner formwork is adapted to the direction of the bridge. The inclination of the bottom edge of the plate 14 is adapted to the direction angle of the bottom surface of the bridge inner cavity. When the bridge bottom mold 11 extends horizontally, the transition plate 14 with a non-inclined bottom surface can be replaced, or the transition plate 14 is not provided, and the bottom surface and the side surface can be directly connected. Die 8 docking.

In this implementation, the supporting wheel 10 is correspondingly connected with a driving motor, and the driving motor can drive the supporting wheel 10 to move along the upper surface of the lower wing plate of the supporting rail 9, so that the inner mold moves forward.

The first push rod 5, the second push rod 6, the third push rod 3 and the driving motor are correspondingly connected with a controller to realize automatic control and improve construction efficiency.

In one embodiment, two wheel seats corresponding to both sides of the support rail 9 are arranged at the same position, and there are two support wheels 10 on each wheel seat, and the two support wheels 10 on both sides are respectively located on both sides of the support rail 9, In addition, in order to reduce the assembly time, only two sets of support wheels 10 are provided on the two cross braces 17 located at both ends of the hydraulic framework.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention are within the scope of the pending rights of the present invention. within the scope of protection.

Claims (10)

1. The hydraulic adjusting internal mold is suitable for a continuous variable cross section and is characterized by comprising a hydraulic framework and a template;

the template includes:

the two top dies are arranged at the top of the hydraulic internal die and positioned at two sides of the hydraulic internal die;

the two side dies are respectively arranged on two sides of the hydraulic internal die and extend upwards to the corresponding top die;

the bottom die is arranged at the bottom of the hydraulic internal die, and two sides of the bottom die are respectively connected with the bottoms of the two side dies in a detachable mode;

the hydraulic pressure skeleton set up in inside the template, the hydraulic pressure skeleton includes the telescopic frame that a plurality of equidistance distribute, telescopic frame includes:

a cross brace;

the two trusses are correspondingly distributed at two ends of the cross brace and are assembled in a sliding mode along the length direction of the cross brace, and the two top molds are respectively connected to the two cross braces so as to be far away from or close to each other along with the sliding of the two trusses;

the two support legs are hinged to two ends, far away from each other, of the two trusses respectively, and rotate along the cross section of the hydraulic internal mold about the hinged point so as to drive the two side molds to rotate towards the central line of the trusses.

2. The internal mold suitable for continuous variable cross-section hydraulic adjustment of claim 1, wherein a supplementary mold is arranged above the two top molds, and the supplementary mold is positioned between the two top molds and used for shielding a gap between the two top molds.

3. The internal mold suitable for continuous variable cross-section hydraulic adjustment of claim 2, wherein the telescopic framework further comprises a top rod, the top rod is arranged in the middle of the cross brace, and the top of the top rod correspondingly supports and contacts the supplementary mold.

4. The internal mold suitable for hydraulic adjustment with continuously variable cross section as claimed in claim 3, wherein a convex strip extending to the top rod is arranged at the center line of the supplementary mold, and a sleeve corresponding to the top rod is arranged at the bottom of the boss.

5. The internal mold suitable for hydraulic adjustment with continuously variable cross section of claim 1, wherein the cross brace is provided with a slideway corresponding to the truss, and the truss is assembled in the slideway in a sliding manner;

two first push rods are arranged on the truss and respectively drive the two trusses to move along the slide way.

6. The internal mold for hydraulic adjustment with continuously variable cross section as claimed in claim 1, wherein a second push rod is hinged between the supporting leg and the truss.

7. The adaptive hydraulic pressure adjusting inner die with the continuously variable cross section as claimed in claim 1, wherein the side die is fixed on the supporting leg through a bolt;

the top die is fixed on the truss through bolts.

8. The hydraulic adjusting internal mold suitable for the continuous variable cross-section according to claim 1, wherein support rails are arranged below two sides of the cross brace, the support rails are I-shaped steel, one end of each support rail is anchored on the top surface of an inner cavity of a poured bridge, and the other end of each support rail is fixed on a bridge fabrication machine;

the bottom of the cross brace is provided with two supporting wheels which extend to the side parts of the supporting rails respectively, a third push rod is arranged above the supporting rails, and the third push rod is over against the bottom surface of the cross brace.

9. The internal mold suitable for hydraulic adjustment with a continuously variable cross section as claimed in claim 1, wherein any two adjacent telescopic frameworks are fixed by a connecting rod, and the connecting rod is fixed on the cross brace by a bolt.

10. The internal mold suitable for hydraulic pressure adjustment with continuously variable cross section as claimed in claim 1, wherein the bottom of the side mold is provided with a transition plate with a bottom edge being an inclined edge, and the bottom mold is detachably fixed on the transition plate.

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