CN111037718A

CN111037718A - Interior-free integral quick-dismantling box girder inner mold and mounting and dismounting method thereof

Info

Publication number: CN111037718A
Application number: CN201911418534.5A
Authority: CN
Inventors: 谢颖诚; 陈权; 王俊; 梁晓东; 陈雄
Original assignee: Fifth Construction Engineering Co of Guangxi Construction Engineering Group
Current assignee: Fifth Construction Engineering Co of Guangxi Construction Engineering Group
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2020-04-21

Abstract

The invention relates to a box girder internal mold, in particular to an internal-free integral quick-release type box girder internal mold. Including left centre form panel, right centre form panel and the centre form strutting arrangement of setting in left and right centre form panel, left centre form panel and right centre form panel respectively by last inner formword and lower inner formword articulated constitution each other, centre form strutting arrangement still include pull rod, upper strut and lower branch, the one end of upper strut articulated with last inner formword, the other end is articulated with the pull rod, the one end of lower branch articulated with lower inner formword, the other end is articulated with the pull rod, upper strut and lower branch on still be provided with fixing device, the invention can be effectual operates in the case roof beam outside, can demolish the centre form, deviate from, need not to operate in the inside finite space of case roof beam, operational environment has very big improvement, and occupation has sufficient guarantee, and factor of safety improves greatly.

Description

Interior-free integral quick-dismantling box girder inner mold and mounting and dismounting method thereof

Technical Field

The invention relates to a box girder internal mold, in particular to an internal-free integral quick-release type box girder internal mold.

Background

The traditional box girder internal mold is a self-supporting template system with enough rigidity and strength formed by mutually fixing a plurality of shaping steel molds and tongue-and-groove steel molds by bolts. The section of the tongue-and-groove steel die is trapezoidal, the contact surface with concrete is a short edge, the inner side of the box girder is a long edge, and the shape provides a convenient breaking opening for internal manual form removal.

The existing manual assembling type dismantling and installing construction technology comprises the following process flows: dismantling bolts → dismantling a steel mould of a tongue-and-groove at the top of the inner mould → dismantling a top adjacent panel → dismantling an adjacent side panel → dismantling a bottom panel → dismantling the panel section by section from inside to outside → dismantling the template section by section to outside → cleaning the template → reversely assembling and molding in the dismantling sequence → integrally positioning.

However, the traditional box girder internal operation belongs to limited space operation, the internal operation is high in temperature and humidity and low in air flow flux, the operation environment is very bad, and the safety risk is large; the mold removal sequence must be from top to bottom, and the process is various and the efficacy is low; the box girder inner space is less, and all steel moulds are transported to inside by the manual work, and the engineering volume is big, and the equipment degree of difficulty is big.

Disclosure of Invention

The invention aims to disclose an inner-free integral quick-dismantling box girder inner mould and an installation and dismantling method thereof, which aim to overcome the defects in the prior art.

The utility model provides an exempt from to go into interior whole quick detach formula case roof beam centre form, includes left centre form panel, right centre form panel and sets up the centre form strutting arrangement in left and right centre form panel, left centre form panel and right centre form panel respectively by last inner formword and lower inner formword articulated constitution each other, centre form strutting arrangement still include pull rod, upper strut and lower branch, the one end and the last inner formword of upper strut articulated, the other end is articulated with the pull rod, the one end and the lower inner formword of lower branch articulated, the other end is articulated with the pull rod, upper strut and lower branch on still be provided with fixing device.

Preferably, the fixing device is that one end of the lower support rod hinged with the pull rod extends outwards, and the top end of the lower support rod is fixedly connected with the upper support rod through a bolt.

Preferably, the fixing device is that one end of the upper support rod hinged with the pull rod extends outwards, and the top end of the upper support rod is fixedly connected to the lower support rod through a bolt.

Preferably, the fixing device is arranged on the upper supporting rod and the lower supporting rod at the head end and the tail end of the internal mold supporting device.

Preferably, the edges of the left and right inner mould panels are provided with diagonal cuts corresponding to each other.

Preferably, reinforcing ribs are arranged at the spliced edges of the left and right inner die panels and the joints of the upper and lower inner die panels.

Preferably, the inner side surfaces of the left and right inner mold panels are fixed with strut connecting pieces, and the strut connecting pieces are provided with small holes.

The installation method of the internal integral quick-dismantling-free box girder internal mold comprises the following steps:

(1) firstly, connecting the upper inner template and the lower inner template of the left inner template panel through hinges;

(2) welding a strut connecting piece on the inner side surface of the left inner mold panel, and forming a small hole on the strut connecting piece;

(3) respectively connecting one end of an upper supporting rod and one end of a lower supporting rod to a supporting rod connecting piece on the inner side of the left inner mold panel through hinges, and then connecting the other ends of the upper supporting rod and the lower supporting rod to a pull rod through hinges;

(4) fixing the upper support rod and the lower support rod by a fixing device to ensure that the upper support rod and the lower support rod are stable;

(5) repeating the steps (1) to (4) again, completing the installation of the right internal mold panel, splicing the left internal mold panel and the right internal mold panel into a whole, and exchanging the installation sequence of the left internal mold panel and the right internal mold panel.

The method for dismounting the internal integral quick-release type box girder internal mold without entering comprises the following steps:

a. firstly, the fixing device on the left inner mold panel is released, the restraint on the lower pull rod and the lower pull rod is released, and a movable structure is formed at the hinged part of the two ends of the upper pull rod and the lower pull rod;

b. the external traction equipment is utilized to drive the pull rod to do horizontal motion, so as to drive the upper and lower support rods to move, at the moment, the left inner mold panel is subjected to traction force generated by the motion of the upper and lower support rods, so that the upper inner mold plate and the lower inner mold plate of the left inner mold panel move inwards by taking the hinged part as a fulcrum, and thus the left inner mold panel can be separated from external concrete and pulled out;

c. and c, repeating the step a and the step b, and then pulling out the right inner mold panel, wherein the pulling-out sequence of the left inner mold panel and the right inner mold panel can be exchanged.

The beneficial effect of adopting above technical scheme is:

1. the internal mold can be effectively detached and separated by operating outside the box girder, operation in a limited space inside the box girder is not needed, the working environment is greatly improved, occupational health is guaranteed sufficiently, and the safety factor is greatly improved.

2. The traditional box girder internal mold adopts manual scattered assembly and disassembly type operation, the assembly difficulty is high, the disassembly procedures are multiple, and the working efficiency is low. Adopt whole quick detach formula case roof beam centre form, can realize that the centre form is whole to be demolishd, whole equipment, whole installation of taking one's place, great reduction the equipment degree of difficulty, cooperate the use of large-scale powerful pulling equipment moreover, reduce and demolish the process, work efficiency is higher.

Drawings

Fig. 1 is a schematic structural view of an integral quick-release box girder inner mold.

Fig. 2 is a schematic structural diagram of a first embodiment of an inner mold supporting device.

Fig. 3 is a schematic structural diagram of a second embodiment of the inner mold supporting device.

Figure 4 is a cross-sectional view of the inner mold support assembly of figure 1 looking in the direction a-a.

Detailed Description

Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

As shown in fig. 1 and 2: the utility model provides an exempt from to go into interior whole quick detach formula case roof beam centre form, including left centre form panel 1, right centre form panel 2 and the centre form strutting arrangement 3 of setting in left and right

centre form panel

1, 2, left centre form panel 1 and right centre form panel 2 are articulated each other by last inner formword 11 and lower inner formword 12 respectively and are constituteed, articulated department adopts hinge connection, wherein, centre form strutting arrangement 3 still includes pull rod 31, go up branch 32 and lower branch 33, pull rod 31 level is placed, the one end of going up branch 32 is articulated with last inner formword 11, the other end is articulated with pull rod 31, the one end of lower branch 33 is articulated with lower inner formword 12, the other end is articulated with pull rod 31, can make each articulated department of upper and lower branch 32, 33 be mobile structure, still be provided with fixing device 4 on upper branch 32 and the lower branch 33.

The working principle is as follows: external force is provided through a traction machine used outside the box girder, so that the pull rod 31 of the internal mold supporting device 3 inside the box girder is driven to move horizontally, the upper supporting rod 32 and the lower supporting rod 33 which are hinged with the pull rod 31 start to move, the upper internal mold plate 11 and the lower internal mold plate 12 are driven to move inwards by taking the hinged part as a fulcrum, the left internal mold panel 1 and the right internal mold panel 2 are separated from the inner surface of the concrete box girder, the purposes of realizing demolding in the operation outside the box girder and realizing the overall taking-out without damage are achieved.

After the inner die is taken out, in the process of removing the die, the pull rod 31 is displaced towards the pulling end, so when the box girder inner die is reset, a traction device is connected to the reverse end to pull the pull rod 31 in the reverse direction, the horizontal movement of the pull rod 31 drives the vertical movement of the upper and lower support rods 32 and 33 to expand the left and right

inner die panels

1 and 2 outwards until the original shape is restored, and then the upper and lower support rods 32 and 33 are fixed in place through the fixing device 4, so that the deformation displacement of the inner die supporting device 3 under the action of self weight is effectively limited.

As shown in fig. 2: the first embodiment of the fixing device 4, set up the fixing device 4 on upper strut 32 and the lower strut 33, the activity for binding upper and lower strut 32, 33, fixing device 4 is the one end of lower strut 33 and pull rod 31 articulated, integrative outside extension, bolt hole a has been seted up on the top, spacing hole b has been seted up on the upper strut 32, lower strut 33 outwards extends to the spacing hole b of upper strut 32, the bolt hole a on top aligns with spacing hole b, lower strut 33 fixed connection is on upper strut 32 through the bolt, and then it can not move about to restrict upper strut 32 and lower strut 33.

As shown in fig. 3: the second embodiment of the fixing device 4, set up fixing device 4 on upper strut 32 and the lower strut 33, can also be the one end of upper strut 32 and pull rod 31 articulated, integrative outside extension, bolt hole a has been seted up on the top, set up spacing hole b on the lower strut 33, the spacing hole b department that upper strut 32 outwards extended to the lower strut 33, the bolt hole a and the spacing hole b on top align, go up strut 32 fixed connection on the lower strut 33 through the bolt, and then restrict upper strut 32 and lower strut 33 and can not move about.

As shown in fig. 4: the fixing devices 4 are arranged on the upper support rod 32 and the lower support rod 33, only the upper support rod 32 and the lower support rod 33 are arranged at the head end and the tail end of the inner mold supporting device 3, and the fixing devices 4 are not arranged on the other upper support rod 32 and the other lower support rod 33.

As shown in fig. 1, preferably, the edges of the left and right

inner mold panels

1 and 2 are provided with the corresponding diagonal cuts 5, and the edges of the left and right

inner mold panels

1 and 2 are respectively made into the form of the inner diagonal cut 5 and the outer diagonal cut 5, so that the forming die is free from the restriction of mutual restriction, thereby being beneficial to quick demolding and being beneficial to the effective combination of the upper and lower

inner mold panels

11 and 12 by using the bell and spigot.

As shown in fig. 1: preferably, the ribbed panels of the left and right

inner mold panels

1 and 2 are made by using a steel plate of 5mm thickness +50 × 50 × 5 angle steel +50mm square tube. The panel consists of an upper inner template 11 and a lower inner template 12, square reinforcing ribs are arranged at the joint of the upper inner template 11 and the lower inner template 12, and angle steel reinforcing ribs are arranged at the edges of the left inner template 1 and the right inner template 2 to form an inner chamfer angle interface.

As shown in fig. 1 and 2: the inner side surfaces of the left and right

inner mold panels

1 and 2 are fixed with a strut connecting piece 13, and the strut connecting piece 13 is provided with a small hole 131 for being hinged with the upper and lower struts 32 and 33. The strut connectors 13 may be steel plates with small holes 131.

The invention discloses an installation method of an internal-free integral quick-release type box girder internal mold, which comprises the following steps:

(1) firstly, connecting the upper inner template 11 and the lower inner template 12 of the left inner template panel 1 through hinges;

(2) a strut connecting piece 13 is welded on the inner side surface of the left inner die panel 1, and a small hole 131 is formed in the strut connecting piece 13;

(3) one end of the upper support rod 32 and one end of the lower support rod 33 are respectively connected to the support rod connecting piece 13 on the inner side of the left inner mold panel 1 through hinges, and then the other ends of the upper support rod 32 and the lower support rod 33 are connected with the pull rod 31 through hinges;

(4) finally, the upper support rod 32 and the lower support rod 33 are fixed by the fixing device 4 to be stable;

(5) repeating the steps (1) to (4) again, finishing the installation of the right internal mold panel 2, splicing the left internal mold panel 1 and the right internal mold panel 2 into a whole, and exchanging the installation sequence of the left internal mold panel 1 and the right internal mold panel 2.

The invention discloses a method for dismantling an internal integral quick-release type box girder internal mold without entering the internal mold, which is characterized by comprising the following steps:

a. firstly, the fixing device on the left inner mold panel 1 is released, the restraint on the lower pull rod 32 and the lower pull rod 33 is released, and a movable structure is formed at the hinged part of the two ends of the upper pull rod 32 and the lower pull rod 33;

b. the external traction equipment is utilized to drive the pull rod 31 to do horizontal motion, so as to drive the upper and lower support rods 32 and 33 to move, at the moment, the left inner die panel 1 is subjected to traction force generated by the motion of the upper and lower support rods 32 and 33, so that the upper inner die plate 11 and the lower inner die plate 12 of the left inner die panel 1 move inwards by taking the hinged part as a fulcrum, and thus the left inner die panel can be separated from external concrete and pulled out;

c. and (c) repeating the steps a and b, and then pulling out the right inner mold panel 2, wherein the pulling-out sequence of the left inner mold panel 1 and the right inner mold panel 2 can be exchanged.

Claims

1. The utility model provides an in whole quick detach formula case roof beam centre form exempts from, its characterized in that: including left centre form panel, right centre form panel and the centre form strutting arrangement of setting in left and right centre form panel, left centre form panel and right centre form panel respectively by last inner formword and lower inner formword articulated constitution each other, centre form strutting arrangement still include pull rod, upper strut and lower branch, the one end of upper strut articulated with last inner formword, the other end is articulated with the pull rod, the one end of lower branch articulated with lower inner formword, the other end is articulated with the pull rod, upper strut and lower branch on still be provided with fixing device.

2. The interior-free integral quick-dismantling box girder inner mold according to claim 1, wherein: the fixing device is characterized in that one end of the lower support rod, which is hinged with the pull rod, extends outwards, and the top end of the fixing device is fixedly connected to the upper support rod through a bolt.

3. The interior-free integral quick-dismantling box girder inner mold according to claim 1, wherein: the fixing device is characterized in that one end of the upper support rod, which is hinged with the pull rod, extends outwards, and the top end of the upper support rod is fixedly connected to the lower support rod through a bolt.

4. An interior integral fast-dismantling box girder inner mold free from being inserted according to any one of claims 1 to 3, wherein: the fixing device is arranged on the upper supporting rod and the lower supporting rod at the head end and the tail end of the internal mold supporting device.

5. The interior-free integral quick-dismantling box girder inner mold according to claim 1, wherein: the edges of the left and right internal mold panels are provided with inclined notches which correspond to each other.

6. The interior-free integral quick-dismantling box girder inner mold according to claim 1, wherein: reinforcing ribs are arranged at the spliced edges of the left and right inner die panels and the joints of the upper and lower inner die panels.

7. The interior-free integral quick-dismantling box girder inner mold according to claim 1, wherein: the inner side surfaces of the left and right inner die panels are fixed with a strut connecting piece, and the strut connecting piece is provided with a small hole.

8. The installation method of the internal-free integral quick-release type box girder internal mold according to any one of claims 1 to 7, characterized by comprising the following steps:

9. The method for dismantling the internal integral quick-release type box girder internal mold without using an internal mold as claimed in any one of claims 1 to 7, comprising the following steps: