CN219772725U - Novel movable die carrier suitable for large-tonnage bridge erection - Google Patents

Abstract

The utility model discloses a novel movable formwork suitable for large-tonnage bridge erection, which comprises a main frame, a front auxiliary supporting leg, a rear auxiliary supporting leg, a main supporting leg, a hanging outer rib, an outer formwork system and an inner formwork system, wherein a pressure sensing device is arranged in the rear auxiliary supporting leg, the stress condition of the rear auxiliary supporting leg can be monitored in real time, an auxiliary supporting device is arranged in the main supporting leg, and the auxiliary supporting device is used for carrying out heavy load supporting on the main frame.

Description

Novel movable die carrier suitable for large-tonnage bridge erection

Technical Field

The utility model relates to the technical field of movable die frames of bridge girder erection machines, in particular to a novel movable die frame suitable for large-tonnage bridge erection.

Background

In recent years, the construction method of the movable formwork with the characteristics of safety, high efficiency, economy and the like is more common for large-scale implementation of railway, highway and river-crossing and sea-crossing bridge construction in China. Along with the gradual formation of the middle east railway network in China, bridge construction gradually turns to the mountainous areas and other places in the west and the south, and most mountainous areas have landforms, so that bridge pier construction is difficult, single span and single span weight of the bridge have to be increased, the bridge is led to develop towards the large-span large-tonnage direction, and the existing movable formwork cannot adapt to the construction working condition of the large-span large-tonnage bridge.

Therefore, a novel movable formwork capable of meeting the large-tonnage bridge construction needs to be designed.

Disclosure of Invention

Aiming at the problems existing in the prior art, the utility model provides a novel movable formwork suitable for large-tonnage bridge erection.

The technical scheme adopted for achieving the purpose is as follows:

the utility model provides a novel movable mould frame suitable for large-tonnage bridge erects, includes the main frame, is located the preceding auxiliary leg of main frame front end, is located the back auxiliary leg of main frame rear end, is located two main legs between preceding auxiliary leg and the back auxiliary leg, is located the outer rib of hanging of main frame below, is located the external mold system of hanging the outer rib and the centre form system that sets up with the external mold system cooperation, its characterized in that, every the main leg includes two displacement platform truck, entablature, stand steel construction, roof beam supporting seat and mound roof anchor, entablature, stand steel construction and roof beam supporting seat are fixed from top to bottom in proper order and are located on the pier, mound roof anchor locates between entablature and the pier, and two displacement platform trucks are located the both ends of entablature relatively, all are equipped with in every displacement platform truck and indulge and move mechanism support in the both ends of main frame below, supplementary strutting arrangement supports between main frame and displacement platform truck, carries out the heavy load to the main frame.

Further, the main frame comprises two groups of longitudinal beams arranged in parallel, a plurality of groups of cantilever beams connected between the two groups of longitudinal beams and a plurality of groups of connecting systems connected between the cantilever beams;

each group of longitudinal beams comprises a main beam and guide beams, the guide beams are arranged at the front end or the rear end of the main beam, and the guide beams are in a combined form of a rectangular truss structure and a box structure.

Furthermore, two groups of hanging rails are arranged below the main beam, and a hanging and lifting device is slidably arranged in each group of hanging rails.

Further, the hanging and lifting device is an electric hoist with the weight of 5 t.

Further, the rear auxiliary supporting leg comprises a supporting upright post, a cross beam, a pressure sensing device and a running mechanism, wherein the supporting upright post is arranged at the tail part of the main frame and is connected with the main frame through a bolt flange, the running mechanism is arranged at the bottom of the supporting upright post through the cross beam, and the pressure sensing device is arranged in the running mechanism.

Further, the pressure sensing device is a pressure sensor pin shaft.

Further, the auxiliary supporting device is an ultrahigh pressure oil cylinder, and the output end of the ultrahigh pressure oil cylinder is supported below the main beam.

Further, hang outer rib including left side and hang outer rib, right side and hang outer rib, left side rotary cylinder and right rotary cylinder, left side is hung outer rib and right side and is hung the outer rib relative rotation and be connected in the both sides of cantilever beam below, left side is hung outer rib and right side and is hung the perpendicular section of outer rib and link to each other through the below at left side rotary cylinder and right side rotary cylinder and cantilever beam both ends respectively, left side rotary cylinder and right rotary cylinder are connected in the rotation with left side and hang outer rib, right side and hang between outer rib and the cantilever beam, left side is hung outer rib and right and is hung the bottom between the outer rib and be connected through the inclined flange.

Further, the outer die system comprises an outer die structure, the lateral sides of the outer die structure are fixedly supported on the inner sides of the left hanging outer rib and the right hanging outer rib through supporting rods, and the bottoms of the outer die structure are fixedly supported on the bottoms of the left hanging outer rib and the right hanging outer rib through longitudinal supports.

The utility model has the beneficial effects that:

1. the utility model supports the weight of the whole main frame, the hanging outer ribs, the formwork system and other equipment and the weight of the structural materials such as steel bars, concrete and the like through the auxiliary supporting device, and the stress condition of the rear auxiliary supporting leg can be monitored in real time through the pressure sensing device, so that the device can adapt to the construction working condition of large-tonnage bridge erection, and the construction economy is greatly improved.

2. Compared with a single girder, the double girder structure is more stable, and meanwhile, the typhoon resistance capability is stronger.

3. The device is also provided with two groups of hanging rails, wherein a hoisting and lifting device is arranged in the hanging rails and used for installing and detaching other components except the girder structure in the movable mould frame, and the hoisting and lifting device comprises materials such as reinforcing steel bars, internal molds, corrugated pipes, steel bellows and other small-sized machines and equipment during construction, so that the field construction is greatly facilitated.

4. The device can realize bidirectional construction, the guide beam in the device is assembled in front of the main beam in the new construction direction in a turning way, and the auxiliary supporting leg is arranged at the tail part of the main beam behind the construction after being hoisted, so that bidirectional construction is realized.

5. Compared with the prior mode of transversely moving left and right to avoid the bridge pier, the method can achieve one-step in-place operation, does not need manual auxiliary switching pin shafts, has high efficiency, occupies small transverse space as a whole, has no interference with side roads, and greatly improves safety and economy.

6. The utility model adopts an upper bearing type structure, has low requirements on the form and the height of the bridge pier, does not need to additionally set up temporary supports for the first-end span construction, has no requirements on the ground under the bridge, reduces land solicitation, and is beneficial to environmental protection.

7. The connecting part of the left hanging outer rib and the right hanging outer rib in the middle part of the hanging outer rib system is designed to be an inclined flange, so that the hanging outer rib can be opened in a rotating way.

Drawings

FIG. 1 is a schematic diagram of the structure of the device of the present utility model;

FIG. 2 is a cross-sectional view of the apparatus of the present utility model in a closed mold casting state;

FIG. 3 is a cross-sectional view of a rotary die-opening via of the apparatus of the present utility model;

FIG. 4 is a schematic view of the structure of the main frame in the device of the present utility model;

FIG. 5 is a schematic view of the front auxiliary leg of the device of the present utility model;

FIG. 6 is a schematic view of the rear auxiliary leg of the apparatus of the present utility model;

FIG. 7 is a schematic view of the front main leg of the device of the present utility model;

FIG. 8 is a schematic diagram of a construction flow of a method for constructing a movable formwork of the present utility model;

FIG. 9 is a schematic illustration of a construction flow diagram in a casting state cross-section;

FIG. 10 is a schematic cross-sectional view of a middle and rear main leg of a construction flow schematic;

FIG. 11 is a schematic cross-sectional view of a front main leg in a schematic construction flow diagram;

FIG. 12 is a second schematic construction flow diagram of the method for constructing a moving formwork of the present utility model;

FIG. 13 is a schematic cross-sectional view of a via state in a second schematic construction flow;

FIG. 14 is a schematic cross-sectional view of a rear main leg in a second schematic construction flow diagram;

FIG. 15 is a schematic cross-sectional view of a front main leg in a second schematic construction flow diagram;

FIG. 16 is a third schematic construction flow diagram of the method for constructing a moving formwork of the present utility model;

FIG. 17 is a schematic cross-sectional view of a rear auxiliary leg in a third schematic construction flow;

FIG. 18 is a schematic cross-sectional view of a front main leg in a third schematic construction flow diagram;

FIG. 19 is a schematic cross-sectional view of a front auxiliary leg in a third schematic construction flow diagram;

FIG. 20 is a schematic diagram of a construction flow of a method for constructing a moving formwork of the present utility model;

FIG. 21 is a schematic cross-sectional view of a rear auxiliary leg in a fourth schematic construction flow;

FIG. 22 is a schematic cross-sectional view of a rear main leg in a fourth schematic construction flow diagram;

FIG. 23 is a schematic cross-sectional view of a front auxiliary leg in a fourth schematic construction flow;

FIG. 24 is a schematic diagram of a construction flow of a method for constructing a moving formwork of the present utility model;

FIG. 25 is a schematic cross-sectional view of a rear auxiliary leg in a fifth schematic construction flow diagram;

FIG. 26 is a schematic cross-sectional view of a rear main leg in a fifth schematic construction flow diagram;

FIG. 27 is a schematic view of a cross section of a front main leg in a fifth schematic view of a construction flow;

FIG. 28 is a construction flow diagram of a method of constructing a moving formwork of the present utility model;

fig. 29 is a schematic view of a construction flow diagram in a pouring state in a cross-middle section;

FIG. 30 is a schematic cross-sectional view of a rear main leg in a sixth schematic construction flow diagram;

FIG. 31 is a schematic cross-sectional view of a front main leg in a sixth schematic construction flow.

The device comprises a 1-main frame, 101-longitudinal beams, 102-cantilever beams, 103-connection systems, 104-main beams, 105-guide beams, 2-front auxiliary support legs, 3-rear auxiliary support legs, 301-cross beams, 302-running mechanisms, 303-pressure sensor pin shafts, 4-front main support legs, 401-displacement trolleys, 402-ultrahigh pressure oil cylinders, 5-rear main support legs, 6-hanging outer ribs, 601-left hanging outer ribs, 602-right hanging outer ribs, 603-left rotating oil cylinders, 604-right rotating oil cylinders, 605-inclined flanges, 606-transverse threaded steel bar pull rods, 607-vertical threaded steel bar suspenders, 7-outer mold systems, 701-supporting rods, 8-inner mold systems, 9-hanging rails and 10-hanging lifting devices.

The drawings are for illustrative purposes only and are not to be construed as limiting the present patent; for the purpose of better illustrating the embodiments, certain elements of the drawings may be omitted, enlarged or reduced and do not represent the actual product dimensions; it will be appreciated by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

Detailed Description

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model.

As shown in fig. 1-7, this embodiment discloses a novel movable formwork suitable for large-tonnage bridge erection, which comprises a main frame 1, a front auxiliary supporting leg 2, a rear auxiliary supporting leg 3, a front main supporting leg 4, a rear main supporting leg 5, a hanging outer rib 6, an outer mold system 7 and an inner mold system 8, wherein the main frame 1 is composed of two groups of longitudinal beams 101, a plurality of groups of cantilever beams 102 and a plurality of groups of connecting systems 103, the longitudinal beams 101 are a double-beam structure composed of main beams 104 and guide beams 105, the front auxiliary supporting leg 2 is arranged at the front end of the guide beams 105 in the main frame 1 and is supported at the pier top to realize the longitudinal movement through holes of the formwork, the main supporting leg is provided with two sets of front main supporting legs 4 and rear main supporting legs 5 which are respectively arranged at the front end and the rear end of the main beam 104, the main supporting legs are main supporting members, the lower upright posts and the frame structure can be disassembled, the rear auxiliary supporting legs 3 are arranged at the tail of the main frame 1, the left hanging outer rib 601 and the right hanging outer rib 602 are connected with the main frame 1 through bolt flanges, the left hanging outer rib 601 and the right hanging outer rib 602 are a group, the hanging outer rib 6 is composed of a plurality of groups of left hanging outer ribs 601 and right hanging outer ribs 602, the left hanging outer ribs 601 and the right hanging outer ribs 602 are transversely arranged and distributed along the lower part of the main beam, each group of left hanging outer ribs 601 and right hanging outer ribs 602 are respectively arranged under each group of cantilever beams 102 on the main beam 104, the left rotating cylinder 603 and the right rotating cylinder 604 which are used for opening and closing the hanging outer ribs 6 are further arranged on the outer sides of each group of left hanging outer ribs 601 and right hanging outer ribs 602, the left rotating cylinder 603 and the right rotating cylinder 604 are respectively arranged at the two ends of the cantilever beams 102, the output ends of the left rotating cylinder 603 and the right rotating cylinder 604 are connected with the vertical sections of the left hanging outer ribs 601 and the right hanging outer ribs 602, the outer die system 7 is supported on the inner sides of the hanging outer ribs 6 through supporting rods 701, and an inner mold system 8 which is matched with the outer mold system 7 is further arranged in the outer mold system 7, so that pouring molding of concrete is realized.

As shown in fig. 1-4, the main frame 1 is composed of two groups of longitudinal beams 101, a plurality of groups of cantilever beams 102 and a plurality of groups of connecting systems 103, wherein the longitudinal beams 101 are a double-beam structure body composed of main beams 104 and guide beams 105, the guide beams 105 are in a rectangular truss structure and box structure combined form, the main frame 1 is reloaded on main supporting legs, and the main frame 1 mainly supports the weight of equipment such as hanging outer ribs 6, outer mold systems 7, inner mold systems 8 and the like and the weight of structural materials such as steel bars, concrete and the like.

As shown in fig. 2, two sets of transverse hanging rails 9 are arranged on the connection system 103 of the main frame 1, each set of hanging rails 9 is slidably provided with a hanging lifting device 10, and the hanging lifting device 10 is a 5t electric hoist, which can walk in the hanging rails 9, so as to facilitate construction and reduce the labor intensity of field operators.

As shown in fig. 1-7, the main support legs are provided with two main support legs, which are respectively positioned at the front end and the rear end of the main beam 104 on the main frame 1, and are main support members, and meanwhile, the lower upright post and the frame structure of the main support legs are disassembled, so that the two main support legs are respectively a front main support leg 4 and a rear main support leg 5, and the rest structures are the same except the positions of the front main support leg 4 and the rear main support leg 5.

As shown in fig. 1-7, in the previous example, the front main leg 4 is formed by a shifting trolley 401, a longitudinal shifting mechanism, an upper beam, a column steel structure, a column connecting frame, a transverse supporting rod assembly, a beam surface supporting seat, pier top anchoring and the like, the upper beam is supported on a pier through the column steel structure, the shifting trolley 401 is arranged above the upper beam, the longitudinal shifting mechanism is arranged in the shifting trolley 401, the shifting trolley 401 is arranged below a girder 104 through the longitudinal shifting mechanism, the auxiliary supporting device is arranged in the shifting trolley 401 and is supported below the girder 104, the upper beam is of a box-shaped structure, ear beams Kong Er seats are designed at two sides and are used for installing anchoring threaded steel bars and anchoring supporting rods, the column and the frame are connected with the upper beam through detachable high-strength bolts, the shifting trolley 401 is used as a main support of the girder, and an ultrahigh-pressure oil cylinder 402 is further arranged on the upper beam, so that the girder can be effectively supported to meet the construction of a large-tonnage bridge.

As shown in fig. 7, the two shift carriages 401 are disposed at two sides of the upper beam in the front main leg 4, and are respectively supported below the two main beams 104, and the two ultra-high pressure cylinders 402 matched with the two shift carriages are also disposed in the two front main legs 4, and the output ends of the ultra-high pressure cylinders 402 are supported below the main beams 104, in this embodiment, the ultra-high pressure cylinders 402 are auxiliary supporting devices.

As shown in fig. 5, the front auxiliary supporting leg 2 is composed of a hinged support, an upper support, a column, a connecting frame, a jacking cylinder, a support, an anchor and the like, the upper support in the front auxiliary supporting leg 2 is arranged at the front end of the guide beam 105 through the hinged support, and is supported at the pier top through the support and the anchor, the front auxiliary supporting leg 2 mainly has the function of realizing the longitudinal movement through hole of the formwork, when the poured concrete beam exists in front of the final span and the construction, the column and the connecting frame are removed and then are supported on the poured concrete beam, so that the longitudinal movement through hole of the final span is realized, and the station of various construction conditions can be met.

As shown in fig. 6, the rear auxiliary leg 3 is composed of a supporting upright, an upper spherical hinge, a lower spherical hinge, a cross beam 301, a running mechanism 302, a longitudinally moving rail, 2 200t hydraulic manual jacks and the like, the supporting upright of the rear auxiliary leg 3 is arranged at the tail part of the main frame 1 and is connected with the main frame 1 through a bolt flange, the running mechanism 302 is arranged at the bottom of the rear auxiliary leg 3, the running mechanism 302 is a wheel track type driven running mechanism, two running mechanisms 302 are arranged in total, a plurality of running wheels are arranged in the running mechanism 302, the rear auxiliary leg 3 is arranged above the pier top through the running mechanism 302, and the 2 200t hydraulic manual jacks are respectively arranged at the outer sides of the two running mechanisms 302, in the embodiment, the rear auxiliary leg 3 is designed to have two states:

when the whole machine passes through the hole, the rear auxiliary supporting leg 3 runs on the poured concrete beam;

when the rear main support leg 5 passes through the hole, the rear auxiliary support leg 3 is converted into a jack to be supported on the beam surface.

As shown in fig. 6, the pressure sensor pin 303 is designed in the running mechanism 302 of the rear auxiliary leg 3, so that the stress condition of the rear auxiliary leg can be detected in real time, the safety and reliability of the whole device are improved, and in this embodiment, the pressure sensor pin 303 is a pressure sensing device.

As shown in fig. 1-3, the hanging outer rib 6 is composed of a plurality of left hanging outer ribs 601 and a plurality of right hanging outer ribs 602, the single left hanging outer rib 601 and the single right hanging outer rib 602 are mutually matched into a group, each group of left hanging outer ribs 601 and right hanging outer ribs 602 are respectively arranged below each group of cantilever beams 102 on the main beam 104, the outer side of each group of left hanging outer ribs 601 and right hanging outer ribs 602 is also provided with a left rotating cylinder 603 and a right rotating cylinder 604 which are used for opening and closing the hanging outer rib 6, the left rotating cylinder 603 and the right rotating cylinder 604 are respectively arranged at two ends of the cantilever beams 102, the output ends of the left rotating cylinder 603 and the right rotating cylinder 604 are connected with vertical sections of the left hanging outer ribs 601 and the right hanging outer ribs 602, and the cylinders of the left rotating cylinder 603 and the right rotating cylinder 604 stretch, so that the left hanging outer ribs 601 and the right hanging outer ribs 602 can be opened and closed.

As shown in fig. 1-3, the middle connection parts of the left hanging outer rib 601 and the right hanging outer rib 602 are designed to be in inclined flange connection, after the left hanging outer rib 601 and the right hanging outer rib 602 are folded, the upper parts of the left hanging outer rib 601 and the right hanging outer rib 602 are locked by the connecting pin shafts of the upper parts and the cantilever beam 102, and the bottom connection parts of the left hanging outer rib 601 and the right hanging outer rib 602 are locked by the inclined flange 605, so that the transverse sliding of the left hanging outer rib 601 and the right hanging outer rib 602 can be avoided, and meanwhile, the inclined flange 605 is favorable for the rotation opening of the left hanging outer rib 601 and the right hanging outer rib 602.

As shown in fig. 1-2, the outer mold system 7 is supported on the inner side of the hanging outer rib 6 through a supporting rod 701, a longitudinal support is arranged between the bottom of the outer mold system 7 and the hanging outer rib 6 for increasing the longitudinal stability of the hanging system, an inner mold system 8 matched with the outer mold system 7 is arranged in the outer mold system 7, transverse twisted steel tie rods 606 matched with the outer mold system 7 and the inner mold system 8 and vertical twisted steel hanging rods 607 are also arranged in the hanging outer rib 6, two vertical twisted steel hanging rods 607 are arranged in total, and pass through the outer mold system 7 from the bottom of the hanging outer rib 6 and are respectively arranged below the two main beams 104, and the transverse twisted steel tie rods 606 transversely pass through the left hanging outer rib 601, the outer mold system 7 and the right hanging outer rib 602.

As shown in fig. 1-31, the present utility model, when in use, comprises the steps of:

step A: installing and debugging the die carrier, controlling the front main support leg 4 and the rear main support leg 5 to lift up, enabling the movable die carrier to reach the beam making elevation position, adjusting the position and elevation of the outer die system 7, setting the pre-camber, fixing the outer die system 7, installing the inner die system 8, adjusting the position and elevation again, sequentially pouring concrete to the center from the front pier column and the rear pier column, and carrying out concrete curing;

and (B) step (B): removing the internal mold system 8, removing end molds, stretching prestressed steel bars, grouting, controlling the whole machine to fall, and falling on the sliding seat of the mobile trolley of the front main supporting leg 4 and the rear main supporting leg 5, removing the inclined flange 605 connection between the left hanging outer rib 601 and the right hanging outer rib 602, and controlling the left rotating cylinder 603 and the right rotating cylinder 604 of the rotating mechanism to drive the left hanging outer rib 601 and the right hanging outer rib 602 to rotate outwards for 30 degrees so as to avoid piers;

step C: the rear auxiliary supporting leg 3 is adjusted, so that the rear auxiliary supporting leg 3 is supported on a beam surface, the pressure condition of the rear auxiliary supporting leg is monitored through a pressure sensor pin shaft 303, the rear auxiliary supporting leg 3 is controlled to lift up, the rear main supporting leg 5 is emptied and hooked under the main frame 1, the rear main supporting leg 5 is controlled to move forwards for one span, and the rear main supporting leg moves to a position about two meters behind the front main supporting leg 4 and is supported on a front pier top beam surface;

step D: the front auxiliary supporting leg 2 and the rear main supporting leg 5 are controlled to lift up, the front main supporting leg 4 is further hollow, the front main supporting leg 4 is hooked under the main frame 1 (at the moment, the whole machine is in a three-leg supporting state and is in a hyperstatic structure, the height difference of the three supporting legs is not more than 30mm, the middle supporting leg is required to be stressed, the elevation of each supporting leg on site is required to be measured, the requirements are ensured), the front main supporting leg 4 is controlled to move forward for one span to reach the front pier top, namely, the front auxiliary supporting leg 2 is driven to the position 0.75m behind, the front auxiliary supporting leg 2 and the rear main supporting leg 5 are supported at the designated position of the front pier top, the main girder 104 is driven to fall on the sliding seat of the shifting trolley of the front main supporting leg 4 and the rear main supporting leg 5, the running mechanism 302 of the rear auxiliary supporting leg 3 is driven to fall on the running track through the ultrahigh pressure oil cylinder 402 in the shifting trolley 401, the front main supporting leg 4 is driven to be anchored on the front pier top, and the front auxiliary supporting leg 2 is retracted to be in the hollow state;

step E: controlling a longitudinal moving mechanism of the rear main support leg 5 to enable the whole machine to move forwards to reach a new beam making position, and controlling the front auxiliary support leg 2 to reach a front pier top support;

step F: the anchoring of the front auxiliary supporting leg 2 is released, the left rotary cylinder 603 and the right rotary cylinder 604 of the rotating mechanism are controlled to drive the left hanging outer rib 601 and the right hanging outer rib 602 to rotate inwards, the left hanging outer rib 601 and the right hanging outer rib 602 are folded and fixed, the front main supporting leg 4 and the rear main supporting leg 5 are controlled to lift, the movable die frame is lifted to the beam making elevation, the position and the elevation of the outer die system 7 are adjusted, the pre-camber is set, the outer die system 7 is fixed, the inner die system 8 is installed, the position and the elevation are adjusted again, concrete pouring is sequentially carried out from the front pier column and the rear pier column to the center, and concrete curing is carried out.

Step G: and B, repeating the steps B to F, and completing the casting operation of the rest box girders until the whole bridge construction is completed.

In the description of the present utility model, it should be understood that the terms "center," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate description of the present utility model and simplify the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the scope of the present utility model.

If the terms "first," "second," etc. are used herein to define a part, those skilled in the art will recognize that: the use of "first" and "second" is for convenience only as well as for simplicity of description, and nothing more than a particular meaning of the terms is intended to be used unless otherwise stated.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may be modified or some technical features may be replaced with others, which may not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.

Claims (9)

1. The utility model provides a novel movable mould frame suitable for large-tonnage bridge erects, includes the main frame, is located the preceding auxiliary leg of main frame front end, is located the back auxiliary leg of main frame rear end, is located two main legs between preceding auxiliary leg and the back auxiliary leg, is located the outer rib of hanging of main frame below, is located the external mold system of hanging the outer rib and the centre form system that sets up with the external mold system cooperation, its characterized in that, every the main leg includes two displacement platform truck, entablature, stand steel construction, roof beam supporting seat and mound roof anchor, entablature, stand steel construction and roof beam supporting seat are fixed from top to bottom in proper order and are located on the pier, mound roof anchor locates between entablature and the pier, and two displacement platform trucks are located the both ends of entablature relatively, all are equipped with in every displacement platform truck and indulge and move mechanism support in the both ends of main frame below, supplementary strutting arrangement supports between main frame and displacement platform truck, carries out the heavy load to the main frame.

2. The novel movable formwork suitable for large-tonnage bridge erection according to claim 1, wherein the main frame comprises two groups of longitudinal beams arranged in parallel, a plurality of groups of cantilever beams connected between the two groups of longitudinal beams and a plurality of groups of connecting systems connected between the cantilever beams;

each group of longitudinal beams comprises a main beam and guide beams, the guide beams are arranged at the front end or the rear end of the main beam, and the guide beams are in a combined form of a rectangular truss structure and a box structure.

3. The novel movable formwork suitable for large-tonnage bridge erection according to claim 2, wherein two groups of hanging rails are arranged below the main girder, and a hanging and lifting device is slidably arranged in each group of hanging rails.

4. A novel movable formwork suitable for large-tonnage bridge erection according to claim 3, wherein the hanging and lifting device is a 5t electric hoist.

5. The novel movable formwork suitable for large-tonnage bridge erection according to claim 1, wherein the rear auxiliary supporting leg comprises a supporting upright, a cross beam, a pressure sensing device and a running mechanism, the supporting upright is arranged at the tail part of the main frame and is connected with the main frame through a bolt flange, the running mechanism is arranged at the bottom of the supporting upright through the cross beam, and the pressure sensing device is arranged in the running mechanism.

6. The novel movable formwork suitable for large-tonnage bridge erection according to claim 5, wherein the pressure sensing device is a pressure sensor pin.

7. The novel movable formwork suitable for large-tonnage bridge erection according to claim 1, wherein the auxiliary supporting device is an ultrahigh-pressure oil cylinder, and the output end of the ultrahigh-pressure oil cylinder is supported below the main girder.

8. The novel movable formwork suitable for large-tonnage bridge erection according to claim 1, wherein the hanging outer ribs comprise left hanging outer ribs, right hanging outer ribs, left rotating cylinders and right rotating cylinders, the left hanging outer ribs and the right hanging outer ribs are connected to two sides below the cantilever beams in a relative rotating mode, vertical sections of the left hanging outer ribs and the right hanging outer ribs are connected to the bottoms of two ends of the cantilever beams through the left rotating cylinders and the right rotating cylinders respectively, the left rotating cylinders and the right rotating cylinders are connected with the left hanging outer ribs, the right hanging outer ribs and the cantilever beams in a rotating mode, and bottoms of the left hanging outer ribs and the right hanging outer ribs are connected through inclined flanges.

9. The novel movable formwork suitable for large-tonnage bridge erection according to claim 1, wherein the lateral sides of the outer formwork system are fixedly supported on the inner sides of the left hanging outer rib and the right hanging outer rib through stay bars, and the bottoms of the outer formwork system are fixedly supported on the bottoms of the left hanging outer rib and the right hanging outer rib through longitudinal supports.