CN211842469U - Box girder template convenient to drawing of patterns handling - Google Patents

Abstract

The utility model relates to a box girder template convenient for demoulding and hoisting, which relates to the technical field of road and bridge construction, and comprises a first side plate, a second side plate, a bottom plate and a top plate, wherein a plurality of lifting mechanisms are evenly arranged on the inner peripheral surface of the first template along the length direction of the first template, each lifting mechanism comprises an upper bracket, a lower bracket, a first lead screw and a second lead screw, one end of the upper bracket is fixedly connected with one end of the first side plate close to the top plate, one end of the first lead screw is rotatably connected with the top plate, and the upper bracket is in threaded connection with the first lead screw; one end of the lower support is fixedly connected with one end, close to the bottom plate, of the first side plate, one end of the second lead screw is rotatably connected with the top plate, and the lower support is in threaded connection with the second lead screw. The utility model discloses can be when taking out the template from the case roof beam, first curb plate and second curb plate just are difficult for the card to die in the case roof beam, the taking out of the template of both being convenient for is difficult for destroying the structure of case roof beam when taking out the template simultaneously again.

Description

Box girder template convenient to drawing of patterns handling

Technical Field

The utility model belongs to the technical field of the technique of road and bridge construction and specifically relates to a case roof beam template convenient to drawing of patterns handling is related to.

Background

The box girder is one of bridge engineering center girders, the interior of the box girder is hollow, and flanges are arranged on two sides of the upper part of the box girder. The box girder of the reinforced concrete structure is divided into a prefabricated box girder and a cast-in-place box girder. The box girder prefabricated in the independent site can be erected after the lower project is finished by combining the bridge girder erection machine, so that the project progress can be accelerated, and the construction period can be saved; cast-in-place box girders are mostly used for large continuous bridges. Need use the mould when pouring the case roof beam in independent place at present, the most side form of mould, the die block, end mould and centre form, place the die block on the base of prefabricated field earlier when using, later splice two side forms respectively in the both sides of die block, later build the steel reinforcement cylinder mould between die block and side form, later build the centre form on the steel reinforcement cylinder mould, later splice the upper end mould at the both ends of die block, later pour the concrete to the steel reinforcement cylinder mould region, treat that the concrete has certain intensity after, with the side form, the die block, end mould and centre form demolish and just pour into a section case roof beam in situ.

At present, a Chinese utility model patent with the publication date of 2018, 17.04.7 and the publication number of CN 207240450U provides a box girder inner template and a box girder forming template, wherein the box girder inner template comprises a first template and a second template; one end of the first template is detachably connected with one end of the second template, and the other end of the first template is detachably connected with the other end of the second template; the first template comprises a plurality of first supporting molds which are sequentially connected in a rotating mode. The second template comprises a plurality of second supporting molds which are sequentially connected in a rotating mode. The box girder forming template comprises a box girder outer template and a box girder inner template; the box girder inner formwork can be arranged inside the box girder outer formwork, and a forming space for concrete forming can be formed between the box girder inner formwork and the box girder outer formwork.

Just need take the template out from the case roof beam after the concrete of case roof beam forms certain intensity, rotate first formwork and second formwork this moment, fold first formwork and second formwork to the inside of template, and then reduce the volume of template, later alright take out whole template through the hoist engine, the plank after taking out still is as an organic whole, is convenient for through the crane handling.

The above prior art solutions have the following drawbacks: after rotating first formwork and second formwork to the inboard of template, the first half of template just no longer laminates with the case roof beam, but the lower half of template still laminates completely with the case roof beam, when using the hoist engine to take out the template, the template still dies in the case roof beam because the effect of receiving self gravity is easy card, and then the drawing of patterns of the template of being not convenient for.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a not enough to prior art exists, the utility model aims at providing a case roof beam template convenient to drawing of patterns handling enables first curb plate, second curb plate, bottom plate and roof and draws close to the center of template simultaneously when the drawing of patterns, and then makes first curb plate, second curb plate, bottom plate, roof all separate with the case roof beam, the drawing of patterns of the template of being convenient for.

The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:

a box girder template convenient for demoulding and hoisting comprises a first side plate, a second side plate, a bottom plate and a top plate, wherein the first side plate and the second side plate are symmetrically arranged, the first side plate, the bottom plate, the second side plate and the top plate are sequentially spliced to form a template with a cavity, a plurality of lifting mechanisms are uniformly arranged on the inner circumferential surface of the first template along the length direction of the first template, each lifting mechanism comprises an upper support, a lower support, a first lead screw and a second lead screw, one end of the upper support is fixedly connected with one end, close to the top plate, of the first side plate, the axis of the first lead screw is perpendicular to the top plate, one end of the first lead screw is rotatably connected with the top plate, and the upper support is in threaded connection with the first lead; the one end of lower carriage and the one end fixed connection that first curb plate is close to the bottom plate, the axle center perpendicular to bottom plate of second lead screw, and the one end of second lead screw rotates with the roof and is connected, lower carriage and second lead screw threaded connection, the roof all is the arc setting with the bottom plate, the one end that first curb plate is close to the roof is tangent with the roof, the one end that first curb plate is close to the bottom plate is tangent with the bottom plate, the one end that second curb plate is close to the roof is tangent with the roof, the one end that second curb plate is close to the bottom plate is tangent with.

By adopting the technical scheme, when the template is drawn out from the box girder, the first screw rod and the second screw rod are firstly rotated to enable the top plate and the bottom plate to be close to each other, thereby taking the top plate and the bottom plate out of the first side plate and the second side plate bracket, and the first side plate and the second side plate can approach each other, because the top plate and the bottom plate are both arranged in an arc shape, one end of the first side plate, which opens into the top plate, is tangent to the top plate, one end of the first side plate, which is close to the bottom plate, is tangent to the bottom plate, one end of the second side plate, which is close to the top plate, is tangent to the top plate, one end of the second side plate, which is close to the bottom plate, is tangent to the bottom plate, the first side plate and the second side plate can be completely separated, so when taking out the template from the case roof beam, first curb plate and second curb plate just are difficult for the card to die in the case roof beam, both are convenient for take out of template, are difficult for destroying the structure of case roof beam when taking out the template again simultaneously.

The present invention may be further configured in a preferred embodiment as: a first chamfer is formed at one end, close to the second side plate, of the top plate, a second chamfer is formed at one end, close to the top plate, of the second side plate, and the first chamfer is matched with the second chamfer; a third chamfer is formed in one end, close to the second side plate, of the bottom plate, a fourth chamfer is formed in one end, close to the bottom plate, of the second side plate, and the third chamfer is matched with the fourth chamfer.

Through adopting above-mentioned technical scheme, when roof and bottom plate slided mutually, the second curb plate alright slide in order to release the concrete box girder to the stress of first curb plate, second curb plate with first curb plate simultaneously, when avoiding roof and bottom plate to deviate from between first curb plate and the second curb plate, first curb plate and second curb plate produce violent vibrations, and then have reduced the destroyed probability of box girder when demolising the template.

The present invention may be further configured in a preferred embodiment as: the two ends of the first side plate and the second side plate are fixedly connected with pull rings.

Through adopting above-mentioned technical scheme, when taking out the template, collude the couple of hoist engine on first curb plate and second curb plate are in the pull ring of same end, later withdraw the couple of hoist engine alright take out the template from the case roof beam.

The present invention may be further configured in a preferred embodiment as: first spout and second spout have been seted up on the second curb plate, and the first slider of one end fixedly connected with of first curb plate is kept away from to the upper bracket, and the one end fixedly connected with second slider of second curb plate is kept away from to the lower carriage, and first slider is pegged graft with first spout along the length direction of self, and the second slider is pegged graft with the second spout along the length direction of self.

Through adopting above-mentioned technical scheme, with first curb plate, the bottom plate, when the template is assembled to second curb plate and roof, first slider just pegs graft in first spout, the second slider pegs graft in the second spout, when needs take out the template from the case roof beam, slide mutually with roof and bottom plate orientation direction that is close to mutually earlier, later first curb plate and second curb plate alright slide mutually along the length direction of first slider, under the effect of first slider and second slider, first curb plate and second curb plate are still as an organic whole, after taking out the template from the case roof beam, the handling of the crane of being convenient for.

The present invention may be further configured in a preferred embodiment as: the upper bracket is also fixedly connected with a first longitudinal beam, the first longitudinal beam is fixedly connected with one end of the upper bracket close to the first side plate, and one end of the first longitudinal beam far away from the upper bracket is fixedly connected with one end of the lower bracket close to the first side plate; the upper bracket is also fixedly connected with a second longitudinal beam, the second longitudinal beam is fixedly connected with one end of the upper bracket close to the second side plate, and one end of the second longitudinal beam far away from the upper bracket is fixedly connected with one end of the lower bracket close to the second side plate.

Through adopting above-mentioned technical scheme, the upper end and the lower extreme of first curb plate alright support through first longeron, the upper end and the lower extreme alright support through the second longeron of second curb plate, have improved the intensity of first curb plate and second curb plate, and when concreting, first curb plate and second curb plate are difficult by concrete extrusion deformation, have improved the reliability.

The present invention may be further configured in a preferred embodiment as: still be provided with on the first curb plate and be used for controlling first lead screw and second lead screw pivoted operating mechanism, operating mechanism includes the third longeron, first axle sleeve, axis of rotation and turbine, the both ends difference fixed connection of third longeron is at the upper and lower both ends of first curb plate, and the third longeron sets up with the length direction interval of first longeron along the first curb plate, first axle sleeve fixed connection is at the middle part of third longeron, the axis of rotation is connected with the coaxial rotation of first axle sleeve, the interval is equipped with the external screw thread in the axis of rotation, first lead screw and the coaxial setting of second lead screw, and the turbine not only slides along the length direction of first lead screw and is connected with first lead screw and slide and be connected with the second lead screw.

Through adopting above-mentioned technical scheme, when will need to take out roof and bottom plate from between first curb plate and the second curb plate, rotate the axis of rotation, it is rotatory to drive the turbine through the axis of rotation, and the turbine drives first lead screw and second lead screw and rotates simultaneously, and first lead screw, second lead screw take place to slide with the turbine when the pivoted, and then take out roof and bottom plate from between first curb plate and the second curb plate.

The present invention may be further configured in a preferred embodiment as: the spline has been seted up on the inner peripheral surface of turbine, and the spline groove has all been seted up to the one end that first lead screw and second lead screw are close to the turbine, and the spline is pegged graft with the spline groove.

Through adopting above-mentioned technical scheme, the turbine accessible spline drives first lead screw and second lead screw and rotates when rotating, and then drives roof and bottom plate and slide, and first lead screw and second lead screw still can produce relative slip with the turbine simultaneously, make the rotation and the slip of first lead screw, second lead screw not influence each other.

The present invention may be further configured in a preferred embodiment as: the opening and closing mechanism further comprises a second shaft sleeve and a third shaft sleeve, the second shaft sleeve is sleeved on the outer peripheral surface of the first lead screw and is in threaded connection with the first lead screw, a first clamping block is fixedly connected to the outer peripheral surface of the second shaft sleeve, a first clamping groove is formed in the upper support, and the first clamping block is clamped with the first clamping groove; the third shaft sleeve is sleeved on the outer peripheral face of the second lead screw, the third shaft sleeve is in threaded connection with the second lead screw, a second clamping block is fixedly connected to the outer peripheral face of the third shaft sleeve, a second clamping groove is formed in the lower support, and the second clamping block is clamped with the second clamping groove.

Through adopting above-mentioned technical scheme, when installation roof and bottom plate, earlier take out second shaft sleeve and third shaft sleeve, and with the roof through first lead screw threaded connection on the second shaft sleeve and adjust the position, pass through second lead screw threaded connection on the third shaft sleeve and connect the position with the bottom plate simultaneously, later with second shaft sleeve joint on the upper bracket, with third shaft sleeve joint on the lower bracket, later with second curb plate and the butt joint of first curb plate again, the adjustment of roof and bottom plate so be convenient for.

The present invention may be further configured in a preferred embodiment as: the second shaft sleeve is in interference fit with the upper support, and the third shaft sleeve is also in interference fit with the lower support.

Through adopting above-mentioned technical scheme, when needs take out roof and bottom plate from between first curb plate and the second curb plate, rotate first lead screw and second lead screw, frictional force between second axle sleeve and the upper bracket provides power for the roof this moment, avoids the second axle sleeve to slide towards the roof, and frictional force between third axle sleeve and the lower carriage provides power for the bottom plate, avoids the third axle sleeve to slide towards the bottom plate.

The present invention may be further configured in a preferred embodiment as: both ends of the rotating shaft are fixedly connected with hexagonal heads.

Through adopting above-mentioned technical scheme, when the axis of rotation is rotated to needs, rotate the hexagonal head simultaneously in the both sides of axis of rotation, so can reduce the torsional deformation of axis of rotation for each position atress of roof and bottom plate is even, and be convenient for roof and bottom plate are deviate from between first curb plate and the second curb plate simultaneously.

To sum up, the utility model discloses a following at least one useful technological effect:

1. through elevating system's setting, and be the arc with roof and bottom plate setting, when the template is pulled down to needs, rotate first lead screw and can make the roof slide downwards, rotate the second lead screw and can make the bottom plate slide upwards, later first curb plate and second curb plate alright slide towards the direction that is close to each other, make first curb plate, the second curb plate, roof and bottom plate all break away from with the case roof beam, when taking out the template from the case roof beam, first curb plate and second curb plate just are difficult for the card to die in the case roof beam, the taking out of both being convenient for template, be difficult for destroying the structure of case roof beam when taking out the template again simultaneously.

2. Through the setting of first slider, first spout, second slider and second spout for first curb plate, second curb plate, roof and bottom plate and case roof beam throw off the back, and first curb plate, second curb plate, roof and bottom plate are still as an organic whole, take out the back with the template from the case roof beam, and the whole handling of the crane of being convenient for.

3. Through the setting of start-stop mechanism, when will need to take out roof and bottom plate from between first curb plate and the second curb plate, rotate the axis of rotation, it is rotatory to drive the turbine through the axis of rotation, and the turbine drives first lead screw and second lead screw and rotates simultaneously, so alright with drive roof and bottom plate relative slippage simultaneously, the operation of the operation workman of being convenient for.

4. Through the setting of spline and spline groove, the turbine accessible spline drives first lead screw and second lead screw and rotates when rotating, and then drives roof and bottom plate and slide, and first lead screw and second lead screw still can produce relative slip with the turbine simultaneously, make the rotation and the slip of first lead screw, second lead screw not influence each other.

Drawings

FIG. 1 is a schematic view of the overall structure of the present embodiment;

FIG. 2 is a schematic cross-sectional view of one of A-A of FIG. 1, illustrating the connection of the lifting mechanism;

FIG. 3 is an enlarged view of a portion A of FIG. 2;

FIG. 4 is an enlarged view of a portion B of FIG. 2;

FIG. 5 is a schematic sectional view of another A-A in FIG. 1, which is for showing the connection relationship between the opening and closing mechanism and the lifting mechanism;

FIG. 6 is a schematic cross-sectional view of B-B of FIG. 1;

FIG. 7 is a schematic view of a partial structure at a turbine in a cross section, in order to show the connection relationship between the first lead screw and the second lead screw and the turbine;

FIG. 8 is an enlarged view of a portion C of FIG. 5;

fig. 9 is an enlarged view of a portion D of fig. 5.

Reference numerals: 1. a first side plate; 11. a first reinforcing rib; 12. a first stringer; 2. a second side plate; 21. a second reinforcing rib; 211. a first chute; 212. a second chute; 22. a second chamfer; 23. a fourth chamfer; 24. a second stringer; 3. a base plate; 31. a third reinforcing rib; 32. a third chamfer; 4. a top plate; 41. a fourth reinforcing rib; 42. a first chamfer; 5. a lifting mechanism; 51. an upper bracket; 511. a first slider; 512. a first card slot; 52. a lower bracket; 521. a second slider; 522. a second card slot; 53. a first lead screw; 54. a second lead screw; 55. a spline groove; 6. a pull ring; 7. an opening and closing mechanism; 71. a third stringer; 72. a first bushing; 73. a rotating shaft; 731. an external thread; 732. a hexagonal head; 74. a turbine; 741. a spline; 75. a second shaft sleeve; 751. a first clamping block; 76. a third shaft sleeve; 761. and a second clamping block.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1, this embodiment has provided a case roof beam template convenient to drawing of patterns handling, including first curb plate 1, second curb plate 2, bottom plate 3 and roof 4, first curb plate 1 is the symmetry setting with second curb plate 2, and first curb plate 1, bottom plate 3, second curb plate 2 splice with roof 4 in proper order, constitute the template that has the cavity.

A plurality of first reinforcing ribs 11 are uniformly welded on the inner peripheral surface of the first side plate 1 along the length direction of the first side plate, a plurality of second reinforcing ribs 21 are uniformly welded on the inner peripheral surface of the second side plate 2 along the length direction of the second side plate, a plurality of third reinforcing ribs 31 are uniformly welded on the inner peripheral surface of the bottom plate 3 along the length direction of the second side plate, and a plurality of fourth reinforcing ribs 41 are uniformly welded on the inner peripheral surface of the top plate 4 along the length direction of the second side plate.

Pull rings 6 are welded at the two ends of the first side plate 1 and the second side plate 2, so that the first side plate 1 and the second side plate 2 are connected with a hook of the winch in a hanging mode.

Referring to fig. 2 and 3, a plurality of lifting mechanisms 5 are further uniformly disposed on the inner circumferential surface of the first die plate along the longitudinal direction of the first die plate, and each lifting mechanism 5 includes an upper bracket 51, a lower bracket 52, a first lead screw 53, and a second lead screw 54.

The upper bracket 51 is U-shaped, and the welding of the one end of upper bracket 51 is in the one end that first strengthening rib 11 is close to roof 4, and the welding of the other end of upper bracket 51 or integrated into one piece have first slider 511, and first spout 211 has been seted up to the one end that second strengthening rib 21 is close to roof 4, and first slider 511 is pegged graft in first spout 211. The axis of the first lead screw 53 is perpendicular to the top plate 4, one end of the first lead screw 53 close to the top plate 4 is rotatably connected with the fourth reinforcing rib 41, and the upper bracket 51 is connected with the first lead screw 53.

The top plate 4 and one end of the fourth reinforcing rib 41 close to the second side plate 2 are provided with a first chamfer 42, and one end of the second side plate 2 and one end of the second reinforcing rib 21 close to the top plate 4 are provided with a second chamfer 22. The first chamfer 42 is fitted to the second chamfer 22, and the first chamfer 42 is opened on the outer peripheral surface of the top plate 4.

Referring to fig. 2 and 4, the lower bracket 52 is also U-shaped, one end of the lower bracket 52 is welded to one end of the first reinforcing rib 11 close to the bottom plate 3, the other end of the lower bracket 52 is welded or integrally formed with a second sliding block 521, one end of the second reinforcing rib 21 close to the bottom plate 3 is provided with a second sliding groove 212, and the second sliding block 521 is inserted into the second sliding groove 212. The axis of the second lead screw 54 is perpendicular to the bottom plate 3, one end of the second lead screw 54 close to the bottom plate 3 is rotatably connected with the third reinforcing rib 31, and the lower bracket 52 is connected with the second lead screw 54.

The bottom plate 3 and one end of the third reinforcing rib 31 close to the second side plate 2 are provided with a third chamfer 32, and one end of the second side plate 2 and one end of the second reinforcing rib 21 close to the bottom plate 3 are provided with a fourth chamfer 23. The third chamfer 32 is adapted to the fourth chamfer 23, and the third chamfer 32 is opened on the outer circumferential surface of the bottom plate 3.

Referring to fig. 2, the top plate 4 and the bottom plate 3 are both arc-shaped, and the circle centers of the top plate 4 and the bottom plate 3 are both located between the top plate 4 and the bottom plate 3. One end of the first side plate 1 close to the top plate 4 is tangent to the top plate 4, and one end of the first side plate 1 close to the bottom plate 3 is tangent to the bottom plate 3. One end of the second side plate 2 close to the top plate 4 is tangent to the top plate 4, and one end of the second side plate 2 close to the bottom plate 3 is tangent to the bottom plate 3.

The upper bracket 51 is further provided with a first longitudinal beam 12 and a second longitudinal beam 24, one end of the first longitudinal beam 12 is welded on one side arm of the upper bracket 51 close to the first side plate 1, and the first longitudinal beam 12 is welded on one end of the upper bracket 51 far away from the first side plate 1; the other end of the first longitudinal beam 12 is welded on a side arm of the lower bracket 52 close to the first side plate 1, and the first longitudinal beam 12 is welded on one end of the lower bracket 52 far away from the first side plate 1.

One end of the second longitudinal beam 24 is welded on one side arm of the upper bracket 51 close to the second side plate 2, and the second longitudinal beam 24 is welded on one end of the upper bracket 51 far away from the second side plate 2; the other end of the second longitudinal beam 24 is welded to a side arm of the lower bracket 52 close to the second side plate 2, and the second longitudinal beam 24 is welded to an end of the lower bracket 52 far from the second side plate 2.

Referring to fig. 5 and 6, the first side plate 1 is further provided with an opening and closing mechanism 7 for controlling the rotation of the first lead screw 53 and the second lead screw 54, and the opening and closing mechanism 7 includes a third longitudinal beam 71, a first shaft sleeve 72, a rotating shaft 73 and turbines 74 with the same number as the lifting mechanism 5. The third longitudinal beams 71 are provided in plurality, the third longitudinal beams 71 are uniformly arranged along the length direction of the first side plate 1, and the third longitudinal beams 71 and the first longitudinal beams 12 are arranged at intervals. One end of the third longitudinal beam 71 is welded to one end of the first reinforcing bead 11 close to the top plate 4, and the other end of the third longitudinal beam 71 is welded to one end of the first reinforcing bead 11 close to the bottom plate 3.

The first shaft sleeve 72 is welded to the middle of the third longitudinal beam 71, and the first shaft sleeve 72 is fitted over the outer peripheral surface of the rotating shaft 73. The rotating shaft 73 is coaxially and rotatably connected with the first shaft sleeve 72, a plurality of external threads 731 are arranged on the rotating shaft 73 at intervals, one external thread 731 corresponds to one turbine 74, and the rotating shaft 73 is engaged with the external threads 731. Hexagonal heads 732 are welded to both ends of the rotating shaft 73.

Referring to fig. 5 and 7, the first lead screw 53 and the second lead screw 54 are coaxially disposed, a spline 741 is integrally formed on an inner circumferential surface of the turbine 74, spline grooves 55 are respectively formed on an outer circumferential surface of one end of the first lead screw 53, which is far away from the top plate 4, and an outer circumferential surface of one end of the second lead screw 54, which is far away from the bottom plate 3, and the first lead screw 53 and the second lead screw 54 are respectively inserted into two ends of the turbine 74. Both ends of the worm gear 74 abut on the upper bracket 51 and the lower bracket 52, respectively.

Referring to fig. 8 and 9, the opening and closing mechanism 7 further includes a second shaft sleeve 75 and a third shaft sleeve 76, the second shaft sleeve 75 is sleeved on the outer peripheral surface of the first lead screw 53, and the second shaft sleeve 75 is in threaded connection with the first lead screw 53. A plurality of first clamping blocks 751 are integrally formed on the outer peripheral surface of the second shaft sleeve 75, first clamping grooves 512 with the same number as the first clamping blocks 751 are formed in the middle arm of the upper bracket 51, the first clamping blocks 751 are clamped with the first clamping grooves 512, and the second shaft sleeve 75 is in interference fit with the upper bracket 51.

A third shaft sleeve 76 is provided on the outer peripheral surface of the second lead screw 54, and the third shaft sleeve 76 is screwed with the second lead screw 54. A plurality of second clamping blocks 761 are integrally formed on the outer peripheral surface of the third shaft sleeve 76, second clamping grooves 522 with the same number as the second clamping blocks 761 are formed in the middle arm of the lower bracket 52, the second clamping blocks 761 are clamped with the second clamping grooves 522, and the third shaft sleeve 76 is in interference fit with the lower bracket 52. It should be noted that the first lead screw 53 and the second lead screw 54 should be threaded in opposite directions.

The implementation principle of the embodiment is as follows:

when the first side plate 1, the second side plate 2, the top plate 4 and the bottom plate 3 are spliced into a template, the second shaft sleeve 75 and the third shaft sleeve 76 are taken out, the first lead screw 53 is screwed into the second shaft sleeve 75, the second lead screw 54 is screwed into the third shaft sleeve 76, then the distance between the top plate 4 and the second shaft sleeve 75 is adjusted, and the distance between the bottom plate 3 and the third shaft sleeve 76 is adjusted; then clamping the second shaft sleeve 75 in the upper bracket 51 and clamping the third shaft sleeve 76 in the lower bracket 52; and then the first sliding block 511 is inserted into the first sliding groove 211, and the second sliding block 521 is inserted into the second sliding groove 212, so that the whole template is spliced.

When the template is drawn out from the box girder, the hexagonal heads 732 at two ends of the rotating shaft 73 are simultaneously rotated by the rotating machinery, at this time, the rotating shaft 73 drives the turbine 74 to rotate, the turbine 74 drives the first lead screw 53 and the second lead screw 54 to rotate in the same direction, at this time, the first lead screw 53 drives the top plate 4 to slide towards the direction close to the bottom plate 3, and the second lead screw 54 drives the bottom plate 3 to slide towards the direction close to the top plate 4; after the top plate 4 and the bottom plate 3 are completely separated from the space between the first side plate 1 and the second side plate 2, under the action of the stress of the box girder, the first side plate 1 and the second side plate 2 approach each other, and under the action of the first sliding block 511, the first sliding groove 211, the second sliding block 521 and the second sliding groove 212, the first side plate 1 and the second side plate 2 are still integrated; then, a hook of the winch is simultaneously hung on the pull rings 6 at the same ends of the first side plate 1 and the second side plate 2, and then the hook of the winch is retracted to draw out the whole template from the box girder; when the template is not completely pulled out of the box girder, a steel wire rope can be sleeved on the template, the steel wire rope is hung on a lifting hook of a crane, and after the template is completely pulled out of the box girder, the whole template can be integrally hoisted and transferred by the crane.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims (10)

1. A box girder template convenient for demoulding and hoisting comprises a first side plate (1), a second side plate (2), a bottom plate (3) and a top plate (4), wherein the first side plate (1) and the second side plate (2) are symmetrically arranged, and the first side plate (1), the bottom plate (3), the second side plate (2) and the top plate (4) are sequentially spliced to form a template with a cavity; it is characterized in that the preparation method is characterized in that,

the inner circumferential surface of the first template is uniformly provided with a plurality of lifting mechanisms (5) along the length direction of the first template, each lifting mechanism (5) comprises an upper support (51), a lower support (52), a first lead screw (53) and a second lead screw (54), one end of each upper support (51) is fixedly connected with one end of each first side plate (1) close to the top plate (4), the axis of each first lead screw (53) is perpendicular to the top plate (4), one end of each first lead screw (53) is rotatably connected with the top plate (4), and each upper support (51) is in threaded connection with the corresponding first lead screw (53); one end of a lower support (52) is fixedly connected with one end, close to the bottom plate (3), of the first side plate (1), the axis of the second lead screw (54) is perpendicular to the bottom plate (3), one end of the second lead screw (54) is rotatably connected with the top plate (4), the lower support (52) is in threaded connection with the second lead screw (54), the top plate (4) and the bottom plate (3) are both arc-shaped, one end, close to the top plate (4), of the first side plate (1) is tangent to the top plate (4), one end, close to the bottom plate (3), of the first side plate (1) is tangent to the bottom plate (3), one end, close to the top plate (4), of the second side plate (2) is tangent to the top plate (4), and one end, close to the bottom plate (3), of the second side plate (2).

2. The box girder template convenient for demoulding and hoisting as claimed in claim 1, is characterized in that: a first chamfer (42) is formed at one end, close to the second side plate (2), of the top plate (4), a second chamfer (22) is formed at one end, close to the top plate (4), of the second side plate (2), and the first chamfer (42) is matched with the second chamfer (22); a third chamfer (32) is formed in one end, close to the second side plate (2), of the bottom plate (3), a fourth chamfer (23) is formed in one end, close to the bottom plate (3), of the second side plate (2), and the third chamfer (32) is matched with the fourth chamfer (23).

3. The box girder template convenient for demoulding and hoisting as claimed in claim 1, is characterized in that: the two ends of the first side plate (1) and the second side plate (2) are fixedly connected with pull rings (6).

4. The box girder template convenient for demoulding and hoisting as claimed in claim 1, is characterized in that: first spout (211) and second spout (212) have been seted up on second curb plate (2), the first slider (511) of one end fixedly connected with of first curb plate (1) are kept away from in upper bracket (51), the one end fixedly connected with second slider (521) of second curb plate (2) are kept away from in lower carriage (52), first slider (511) are pegged graft with first spout (211) along the length direction of self, second slider (521) are pegged graft with second spout (212) along the length direction of self.

5. The box girder template convenient for demoulding and hoisting as claimed in claim 4, is characterized in that: the upper support (51) is also fixedly connected with a first longitudinal beam (12), the first longitudinal beam (12) is fixedly connected to one end, close to the first side plate (1), of the upper support (51), and one end, far away from the upper support (51), of the first longitudinal beam (12) is fixedly connected with one end, close to the first side plate (1), of the lower support (52); the upper bracket (51) is also fixedly connected with a second longitudinal beam (24), the second longitudinal beam (24) is fixedly connected with one end, close to the second side plate (2), of the upper bracket, and one end, far away from the upper bracket (51), of the second longitudinal beam is fixedly connected with one end, close to the second side plate (2), of the lower bracket (52).

6. The box girder template convenient for demoulding and hoisting as claimed in any one of claims 1 to 5, wherein: the opening and closing mechanism (7) used for controlling the first lead screw (53) and the second lead screw (54) to rotate is further arranged on the first side plate (1), the opening and closing mechanism (7) comprises a third longitudinal beam (71), a first shaft sleeve (72), a rotating shaft (73) and a turbine (74), two ends of the third longitudinal beam (71) are fixedly connected to the upper end and the lower end of the first side plate (1) respectively, the third longitudinal beam (71) and the first longitudinal beam (12) are arranged at intervals along the length direction of the first side plate (1), the first shaft sleeve (72) is fixedly connected to the middle of the third longitudinal beam (71), the rotating shaft (73) is coaxially and rotatably connected with the first shaft sleeve (72), external threads (731) are arranged on the rotating shaft (73) at intervals, the first lead screw (53) and the second lead screw (54) are coaxially arranged, and the turbine (74) is connected with the first lead screw (53) in a sliding manner and the second lead screw (54) in a sliding manner along the length direction of the first lead, the rotating shaft (73) is engaged with the turbine (74).

7. The box girder template convenient for demoulding and hoisting as claimed in claim 6, is characterized in that: the inner peripheral surface of the turbine (74) is provided with a spline (741), the ends, close to the turbine (74), of the first lead screw (53) and the second lead screw (54) are provided with spline grooves (55), and the spline (741) is connected with the spline grooves (55) in an inserting mode.

8. The box girder template convenient for demoulding and hoisting as claimed in claim 7, is characterized in that: the opening and closing mechanism (7) further comprises a second shaft sleeve (75) and a third shaft sleeve (76), the second shaft sleeve (75) is sleeved on the outer peripheral surface of the first lead screw (53), the second shaft sleeve (75) is in threaded connection with the first lead screw (53), a first clamping block (751) is fixedly connected to the outer peripheral surface of the second shaft sleeve (75), a first clamping groove (512) is formed in the upper bracket (51), and the first clamping block (751) is clamped with the first clamping groove (512); the third shaft sleeve (76) is arranged on the outer peripheral surface of the second lead screw (54), the third shaft sleeve (76) is in threaded connection with the second lead screw (54), a second clamping block (761) is fixedly connected to the outer peripheral surface of the third shaft sleeve (76), a second clamping groove (522) is formed in the lower bracket (52), and the second clamping block (761) is clamped with the second clamping groove (522).

9. The box girder template convenient for demoulding and hoisting as claimed in claim 8, is characterized in that: the second shaft sleeve (75) is in interference fit with the upper support (51), and the third shaft sleeve (76) is also in interference fit with the lower support (52).

10. The box girder template convenient for demoulding and hoisting as claimed in claim 6, is characterized in that: and the two ends of the rotating shaft (73) are fixedly connected with hexagonal heads (732).

Images