CN211522887U - Single-beam bridge girder erection machine - Google Patents
Single-beam bridge girder erection machine Download PDFInfo
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- CN211522887U CN211522887U CN201921296439.8U CN201921296439U CN211522887U CN 211522887 U CN211522887 U CN 211522887U CN 201921296439 U CN201921296439 U CN 201921296439U CN 211522887 U CN211522887 U CN 211522887U
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Abstract
The application discloses monospar frame bridge crane, monospar frame bridge crane includes: two straddle type girders, preceding jack-up overhead traveling crane, back jack-up overhead traveling crane, main landing leg, well landing leg, back folding leg, rear wheelset landing leg and back walking landing leg, wherein, two straddle type girders adopt single box structure, satisfy two along the bridge construction direction and stride the arrangement, two straddle type girders's preceding lower part of striding sets up the track, support main landing leg longitudinal movement, two straddle type girders's intermediate part set flange with well landing leg is connected, two straddle type girders's afterbody set flange respectively with back wheelset landing leg reaches back walking leg is connected, two straddle type girders's afterbody with back folding leg hinged joint, two straddle type girders's back stride fixed point position web draw the hole support preceding jack-up overhead traveling crane with back jack-up overhead traveling crane. The single-beam bridge girder erection machine can be lowered in height to facilitate the passage through the tunnel.
Description
Technical Field
The application relates to the technical field of bridge girder erection machines for bridge construction equipment, in particular to a single-beam bridge girder erection machine.
Background
A bridge girder erection machine is a device used for placing prefabricated beam pieces on a prefabricated bridge pier. Bridge girder erection machines belong to the crane category, as their main function is to lift the beam piece up and then transport it into position and put it down. The bridge girder erection machine is very different from a general crane. The bridge girder erection machine requires harsh conditions and has the phenomenon that the beam piece runs upwards or moves longitudinally. The bridge girder erection machine is divided into a highway bridge erection machine, a conventional railway bridge erection machine, a passenger-dedicated railway bridge erection machine and the like.
The bridge girder erection machine is very common for erecting highway and railway bridges, and the front and rear hanging beam trolleys are matched with the hanging beams to longitudinally move between two bridge abutments when the simple supporting beams are erected by the bridge girder erection machine used at home and abroad at present.
In the prior art, some bridge girder erection machines adopt larger O-shaped legs, and some bridge girder erection machines adopt a transportation and erection all-in-one machine, so that the working condition of girder erection at a tunnel portal cannot be completed by the O-shaped legs although the construction of girder erection can be completed, and the transportation and erection all-in-one machine has the disadvantages of large oil consumption, low efficiency and large pressure on a girder surface.
SUMMERY OF THE UTILITY MODEL
A plurality of aspects of this application provide a single beam bridging machine, can reduce highly being favorable to through the tunnel, and this bridging machine make full use of concave body fortune roof beam car load-carrying members is as moving the roof beam track, better dispersion to the pressure of setting up the roof beam face, adopts the single beam design simultaneously, does not have the great O type leg structure of rear portion structural style, has the light in weight characteristics, improves work efficiency greatly.
An aspect of the present application provides a single-beam bridge girder erection machine, including: two straddle type main beams, a front hoisting crown block, a rear hoisting crown block, a main supporting leg, a middle supporting leg, a rear folding supporting leg, a rear wheel group supporting leg and a rear walking supporting leg, wherein,
the two-span type main beam adopts a single-box structure, two-span arrangement is met along the bridge construction direction, the lower part of the front span of the two-span type main beam is provided with a track to support the main supporting leg longitudinally, the middle part of the two-span type main beam is provided with a flange to be connected with the middle supporting leg, the tail part of the two-span type main beam is provided with a flange to be connected with the rear wheel group supporting leg and the rear walking supporting leg respectively, the tail part of the two-span type main beam is connected with the rear folding supporting leg hinge shaft, and the rear span fixed point position web of the two-span type main beam is provided with a hole to support the front hoisting crown block and the rear hoisting crown block.
Optionally, the front crane crown block and the rear crane crown block are supported by a beam at the upper part of the two-span main beams at fixed points, a longitudinal moving system and a transverse moving system are arranged on the beam, the steel wire rope of the front crane crown block is wound in a one-point hoisting manner, and the steel wire rope of the rear crane crown block is wound in a two-point hoisting manner.
Optionally, the main supporting leg is an inverted triangle structure formed by combining a main bearing leg and an inclined strut leg, the upper portion of the main supporting leg is a riding wheel device and supports the two straddle type main beams, the main supporting leg is arranged on the lower portion of the two straddle type main beams through a reverse hanging walking system and walks, a folding mechanism is arranged in the middle of the main supporting leg, the height of the supporting leg is reduced, and the lower portion of the main supporting leg is of a telescopic sleeve structure and supports the bridge pier.
Optionally, the upper hinge base of the middle supporting leg is connected with the hinge shaft of the two-span main beam, and the lower jacking cylinder of the middle supporting leg is supported on the erected beam surface.
Optionally, the upper hinge base of the rear folding leg is connected to the hinge shaft of the two-span main beam, the lower part of the rear folding leg is supported on the erected beam surface by the jacking cylinder, and the height of the rear folding leg is reduced by the hinge shaft.
Optionally, the upper flange of the rear wheel set supporting leg is connected with the two straddle type main beams, and the lower part of the rear wheel set supporting leg is supported on a concrete beam surface transported by the concave beam transporting vehicle for the wheel set mechanism.
Optionally, the upper flange of the rear walking leg is connected with the two-span main beam, and the lower part of the rear walking leg is supported on a track of a bearing beam of the concave girder transport vehicle for the wheel set mechanism so as to realize longitudinal movement.
The single-beam bridge girder erection machine can reduce the height and is beneficial to passing through a tunnel, the bridge girder erection machine fully utilizes the bearing structure of the concave girder transport vehicle as a girder moving track, the pressure on the erected girder surface is well dispersed, meanwhile, the single-beam bridge girder erection machine adopts a single-beam design, does not have an O-shaped leg structure with a large rear structure form, has the characteristic of light weight, and greatly improves the working efficiency.
Drawings
Fig. 1 is a schematic structural diagram of a single-beam bridge girder erection machine according to an embodiment of the present application.
Fig. 2-9 are state diagrams of various stages of a girder via-drilling method of the single girder bridge girder erection machine illustrated in fig. 1 according to another embodiment of the present application.
Fig. 10 to 14 are state views illustrating stages of a method for erecting a final hole of the single girder bridge erecting machine according to another embodiment of the present application, which is illustrated in fig. 1.
Fig. 15-19 are state diagrams of various stages of a through-tunnel method of the single-girder bridge girder erection machine illustrated in fig. 1 according to another embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The term "and/or" herein is merely an association describing an associated object, meaning that three relationships may exist, e.g., a and/or B, may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship. Additionally, the terms "system" and "network" are often used interchangeably herein.
Fig. 1 is a schematic structural diagram of a single-beam bridge girder erection machine according to an embodiment of the present application, and as shown in the drawing, the single-beam bridge girder erection machine includes: the two-span type main beam 1, the front hoisting crown block 2, the rear hoisting crown block 3, the main supporting legs 4, the middle supporting legs 5, the rear folding supporting legs 6, the rear wheel group supporting legs 7 and the rear walking supporting legs 8. In another embodiment of the present application, the single-beam bridge girder erection machine further comprises an electro-hydraulic system for driving the operation of the single-beam bridge girder erection machine.
The two-span type main beam 1 is of a single-box structure, two-span arrangement is met along the bridge construction direction, the lower part of the front span of the two-span type main beam 1 is provided with a track to support the main supporting leg 4 to move longitudinally, the middle part of the two-span type main beam 1 is provided with a flange to be connected with the middle supporting leg 5 (for example, rigid connection), the tail part of the two-span type main beam 1 is provided with a flange to be connected with the rear wheel group supporting leg 7 and the rear walking supporting leg 8 (for example, rigid connection), the tail part of the two-span type main beam 1 is connected with the rear folding supporting leg 6 hinged shaft, and the rear span fixed point position web of the two-span type main beam 1 is drilled to support the front hoisting crane 2 and the rear hoisting crane 3.
The front hoisting crown block 2 and the rear hoisting crown block 3 are supported to the fixed point positions of the two straddle type main beams 1 by the upper cross beams, a longitudinal moving system (not shown) and a transverse moving system (not shown) are arranged on the cross beams, the steel wire rope of the front hoisting crown block 2 is wound in a one-point hoisting mode, and the steel wire rope of the rear hoisting crown block 3 is wound in a two-point hoisting mode.
The upper hinged support of the middle supporting leg 5 is connected with the hinged shaft of the two straddle type main beams 1, and the lower jacking oil cylinder of the middle supporting leg 5 is supported on the erected beam surface.
The upper hinge seats of the rear folding supporting legs 6 are connected with the hinge shafts of the two straddle type main beams 1, the lower parts of the rear folding supporting legs 6 are used for supporting erected beam surfaces by jacking oil cylinders, and the height of the supporting legs can be reduced by the rear folding supporting legs 6 through the hinge shafts.
The upper flange of the rear wheel set supporting leg 7 is connected with the two straddle type main beams 1, and the lower part of the rear wheel set supporting leg 7 is supported on a concrete beam surface transported by the concave beam transporting vehicle for the wheel set mechanism.
The upper flange of the rear walking supporting leg 8 is connected with the two straddle type main beams 1, and the lower part of the rear walking supporting leg 8 is supported on a track of a concave girder transporting vehicle bearing beam by a wheel set mechanism and can move longitudinally.
The single-beam bridge girder erection machine described above can reduce the height of the supporting legs and is beneficial to passing through a tunnel because the main supporting legs and the rear folding supporting legs are provided with the folding mechanisms, and in addition, the single-beam bridge girder erection machine can well disperse the pressure on the erected girder surface by fully utilizing the bearing structure of the concave girder transport vehicle as a girder moving track, and meanwhile, the single-beam bridge girder erection machine adopts the single-beam design, has no O-shaped leg structure with a large rear structure form, has the characteristic of light weight and greatly improves the working efficiency.
Referring to fig. 2 to 9, which are state diagrams of various stages of a girder via-erecting method of the single girder bridge girder erection machine of fig. 1 according to another embodiment of the present application, the girder via-erecting process of the bridge girder erection machine may be as follows.
Step 201, as shown in fig. 2, the single-beam bridge girder erection machine is in a girder erection station state, the main support leg 4 is supported to a front span pier support, and the middle support leg 5 is supported to the foremost end of the erected concrete beam; the rear folding supporting legs 6 are vertically supported on a concrete beam surface; the rear walking supporting legs 8 are converted into a horizontal retracting state by using folding oil cylinders; the concave body beam transporting vehicle carries the concrete beam to the rear side of the rear folding supporting leg 6.
Step 202, as shown in fig. 3, the concave girder transport vehicle is lifted to support the rear wheel group support legs 7 on the transported concrete girder surface; the rear folding supporting leg 6 is converted into a horizontal retracting state by using a folding oil cylinder; and the hump beam of the concave beam transporting vehicle actively moves forwards to the rear wheel group supporting leg 7 to the tail part of the concrete beam.
Step 203, as shown in fig. 4, the rear walking support legs 8 are converted into a vertical state by using the folding oil cylinders, and the telescopic sleeves are released, so that the rear walking support legs are supported on the bearing beams of the concave girder transporting vehicle; the concave body beam transporting vehicle camel beam continuously moves forwards to a concrete lifting point corresponding to the front lifting crown block 2 and the rear lifting crown block 3; and the oil cylinder at the lower part of the middle supporting leg 5 is retracted to be separated from the beam surface.
Step 204, as shown in fig. 5, the front crane 2 and the rear crane 3 simultaneously lower a lifting appliance and connect with a corresponding lifting point of the concrete beam; the front hoisting crown block 2 and the rear hoisting crown block 3 simultaneously hoist the concrete beam to separate from the concave beam transporting vehicle; the lower wheel set of the rear walking support leg 8 walks on the concave girder transporting vehicle and is linked with the upper walking mechanism of the main support leg 4, and the two straddle type main girders 1 hang concrete beams and move forwards longitudinally; the concrete beam is longitudinally advanced to a beam-dropping position.
Step 205, as shown in fig. 6, the front crane crown block 2 and the rear crane crown block 3 simultaneously lower a lifting appliance to enable the concrete beam to fall on a pier; the front hoisting crown block 2 and the rear hoisting crown block 3 are disconnected from the concrete beam, and a lifting appliance is lifted.
Step 206, as shown in fig. 7, the wheel set at the lower part of the rear walking support leg 8 walks on the concave girder transporting vehicle and is linked with the walking mechanism at the upper part of the main support leg 4, and the two straddle type main girders 1 move backwards in the longitudinal direction, so that the middle support leg 5 is supported to the erected concrete beam end.
Step 207, as shown in fig. 8, retracting the jacking cylinder at the lower part of the main supporting leg 4 to separate the main supporting leg 4 from the pier; the reverse hanging walking system at the upper part of the main supporting leg 4 drives the main supporting leg 4 to longitudinally move forwards to the next pier for supporting; the concave body beam transporting vehicle moves backwards in the longitudinal direction to make room for the rear folding supporting legs 6; the rear folding supporting legs 6 are converted into a vertical state by using the folding oil cylinders and are supported on the concrete beam surface.
Step 208, as shown in fig. 9, the girder transporting vehicle is lowered to separate the rear walking support legs 8 from the concave girder transporting vehicle, and the rear walking support legs 8 are converted into a horizontally retracted state by using the folding oil cylinders; and returning the concave beam transporting vehicle to a beam factory to take the beam and preparing for next beam erecting.
Referring to fig. 10 to 14, which are state diagrams of various stages of a method for erecting a final hole of a single girder bridge erecting machine according to another embodiment of the present application, the process for erecting a final hole of a bridge erecting machine may be as follows.
Step 301, as shown in fig. 10, the front crane crown block 2 and the rear crane crown block 3 complete the beam falling of the concrete beam, and the lifting appliance is separated from the beam body; the lower wheel sets of the rear walking support legs 8 walk on the concave girder transporting vehicle and are linked with the upper walking mechanism of the main support legs 4, and the two straddle type main girders 1 move backwards in the longitudinal direction, so that the middle support legs 5 are supported to the erected concrete beam ends.
Step 302, as shown in fig. 11, retracting the lower jacking cylinder of the main leg 4 to separate the main leg 4 from the pier; the middle folding mechanism of the main supporting leg 4 works to reduce the overall height of the main supporting leg 4 and meet the requirement of beam surface support; the upper reverse hanging walking system of the main supporting leg 4 drives the main supporting leg 4 to longitudinally move forwards to the next beam surface for supporting.
Step 303, as shown in fig. 12, the concave girder transport vehicle longitudinally moves backwards to make room for the rear folding legs 6; the rear folding supporting legs 6 are converted into a vertical state by using the folding oil cylinders and are supported on the concrete beam surface.
Step 304, as shown in fig. 13, the girder transporting vehicle is lowered to separate the rear walking support legs 8 from the concave girder transporting vehicle, and the rear walking support legs 8 are converted into a horizontally retracted state by using the folding oil cylinders; and returning the concave beam transporting vehicle to a beam factory for beam taking.
And 305, completing the erection of the final-hole beam according to the bridge erecting machine beam via-hole process as shown in fig. 14.
Referring to fig. 15-19, which are state diagrams of various stages of a through-tunnel method of the single-girder bridge girder erection machine illustrated in fig. 1 according to another embodiment of the present application, the through-tunnel process of the bridge girder erection machine may be as follows.
Step 401, as shown in fig. 15, before entering the tunnel, the jacking cylinders at the lower parts of the middle supporting leg 5 and the rear folding supporting leg 6 are recovered, so that the two-span main girder 1 is lowered to the lowest height; the main leg 4 is in a folded state, supported on a beam surface.
Step 402, as shown in fig. 16, extending the telescopic sleeves at the lower parts of the rear walking legs 8, and supporting the rear walking legs 8 on a beam surface; and (3) recovering the jacking oil cylinders at the lower parts of the middle supporting leg 5 and the rear folding supporting leg 6, so that the middle supporting leg 5 and the rear folding supporting leg 6 are separated from the beam surface.
In step 403, as shown in fig. 17, the driving trolley below the rear walking leg 8 drives the main beam to move longitudinally, so that the middle leg 5 reaches the rear part of the main leg 4.
Step 404, as shown in fig. 18, extending the jacking cylinders at the lower parts of the middle support legs 5 to support the jacking cylinders on the beam surface; the main supporting leg 4 is separated from the ground, and the reverse hanging walking system on the upper part of the main supporting leg 4 drives the main supporting leg 4 to longitudinally move to the foremost end of the two straddle type main beams 1.
In step 405, as shown in fig. 19, the operation process from step 402 to step 404 is repeated, and the tunnel self-passing is completed.
In the process of the single-beam bridge girder erection machine passing through the tunnel, the main supporting leg and the rear folding supporting leg are provided with the folding mechanisms, so that the height of the supporting legs can be reduced, and the single-beam bridge girder erection machine is favorable for passing through the tunnel.
The above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.
Claims (7)
1. A single-beam bridge girder erection machine, comprising: two straddle type main beams (1), a front hoisting crown block (2), a rear hoisting crown block (3), a main supporting leg (4), a middle supporting leg (5), a rear folding supporting leg (6), a rear wheel group supporting leg (7) and a rear walking supporting leg (8), wherein,
two stride formula girder (1) adopt single-box type structure, satisfy two along the bridge construction direction and stride the arrangement, the lower part is set up the track to the preceding lower part of striding of two strides formula girder (1), supports main landing leg (4) longitudinal movement, the intermediate part of two strides formula girder (1) set up the flange with well landing leg (5) are connected, the afterbody of two strides formula girder (1) set up the flange respectively with back wheelset landing leg (7) and back walking landing leg (8) are connected, the afterbody of two strides formula girder (1) with back folding landing leg (6) hinge joint, the fixed point position web is striden to the back of two strides formula girder (1) is drawn the hole and is supported preceding jack-up overhead traveling crane (2) with back jack-up overhead traveling crane (3).
2. The single-beam bridge girder erection machine according to claim 1, wherein the upper beams of the front crane crown block (2) and the rear crane crown block (3) are supported to the fixed point positions of the two-span main girders (1), the beams are provided with a longitudinal movement system and a transverse movement system, the wire rope of the front crane crown block (2) is wound in a one-point hanging manner, and the wire rope of the rear crane crown block (3) is wound in a two-point hanging manner.
3. The single-beam bridge girder erection machine according to claim 1, wherein the main supporting leg (4) is an inverted triangle structure formed by combining a main bearing leg and an inclined supporting leg, the upper part of the main supporting leg (4) is provided with a riding wheel device for supporting the two straddle type main girders (1), a reverse hanging walking system enables the main supporting leg (4) to walk on the lower parts of the two straddle type main girders (1), the middle part of the main supporting leg (4) is provided with a folding mechanism for reducing the height of the supporting leg, and the lower part is provided with a telescopic sleeve structure for supporting on a bridge pier.
4. The single-beam bridge girder erection machine according to claim 1, wherein the upper hinge base of the middle leg (5) is connected with the hinge shaft of the two-span main girders (1), and the lower jacking cylinder of the middle leg (5) is supported to the erected girder surface.
5. The single-beam bridge girder erection machine according to claim 1, wherein the upper hinge base of the rear folding leg (6) is connected with the hinge shaft of the two-span main girder (1), the lower part of the rear folding leg (6) is used for supporting the jacking cylinder on the erected girder surface, and the rear folding leg (6) reduces the leg height through the hinge shaft.
6. The single-beam bridge girder erection machine according to claim 1, wherein the upper flange of the rear wheel set leg (7) is connected with the two-span main girder (1), and the lower portion of the rear wheel set leg (7) is supported on the concrete beam surface of the concave girder transport vehicle for the wheel set mechanism.
7. The single-beam bridge girder erection machine according to claim 1, wherein the upper flange of the rear walking leg (8) is connected with the two-span main girder (1), and the lower part of the rear walking leg (8) is supported on the track of the concave girder carrier for longitudinal movement for the wheel set mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921296439.8U CN211522887U (en) | 2019-08-12 | 2019-08-12 | Single-beam bridge girder erection machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921296439.8U CN211522887U (en) | 2019-08-12 | 2019-08-12 | Single-beam bridge girder erection machine |
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| CN211522887U true CN211522887U (en) | 2020-09-18 |
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| CN201921296439.8U Active CN211522887U (en) | 2019-08-12 | 2019-08-12 | Single-beam bridge girder erection machine |
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