CN116873757B - Fish-bellied crane girder - Google Patents
Fish-bellied crane girder Download PDFInfo
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- CN116873757B CN116873757B CN202311126602.7A CN202311126602A CN116873757B CN 116873757 B CN116873757 B CN 116873757B CN 202311126602 A CN202311126602 A CN 202311126602A CN 116873757 B CN116873757 B CN 116873757B
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- bellied
- prestress
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- 238000012544 monitoring process Methods 0.000 claims abstract description 35
- 238000004873 anchoring Methods 0.000 claims abstract description 31
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- 210000001015 abdomen Anatomy 0.000 claims description 16
- 230000000149 penetrating effect Effects 0.000 claims description 10
- 210000000078 claw Anatomy 0.000 claims description 9
- 230000006698 induction Effects 0.000 claims description 5
- 230000008859 change Effects 0.000 abstract description 20
- 238000000034 method Methods 0.000 abstract description 13
- 230000008569 process Effects 0.000 abstract description 10
- 238000006073 displacement reaction Methods 0.000 description 6
- 230000001276 controlling effect Effects 0.000 description 5
- 230000008093 supporting effect Effects 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
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- 238000013461 design Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 239000003351 stiffener Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C6/00—Girders, or track-supporting structures, specially adapted for cranes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
- B66C13/16—Applications of indicating, registering, or weighing devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C15/00—Safety gear
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C7/00—Runways, tracks or trackways for trolleys or cranes
- B66C7/08—Constructional features of runway rails or rail mountings
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jib Cranes (AREA)
Abstract
The invention relates to a fish-bellied crane girder, comprising: a fish-bellied crane beam body; prestress tensioning cables are distributed along the lower edge of the fish-bellied crane girder main body; the vertical deflection monitoring system is arranged at one end of the prestress tensioning cable on the fish-bellied crane beam main body; the prestress adjusting and anchoring device is arranged at the other end of the prestress tensioning cable on the fish-bellied crane beam main body; the vertical deflection monitoring system is associated with one end of the prestress tensioning cable and the prestress adjusting and anchoring device and is used for sensing the vertical deflection of the fish-bellied crane girder main body through one end of the prestress tensioning cable and controlling the prestress adjusting and anchoring device to stretch the other end of the prestress tensioning cable when the vertical deflection reaches a preset limit value so as to offset the vertical deflection. The fish-bellied crane beam can monitor the change of the vertical deflection of the crane beam and automatically control and regulate the prestress of the tension cable, ensure the safety of the crane beam in the use process and improve the service life of the crane beam.
Description
Technical Field
The invention relates to the technical field of large-span heavy-load crane beams, in particular to a fish-bellied crane beam.
Background
The prestress is to improve the service performance of the structure, compressive stress is pre-applied to the structure during construction, and the prestress can fully or partially counteract tensile stress caused by load during the service of the structure, so that the structural damage is avoided.
The crane beam is a beam structure for supporting the bridge crane to operate, and the beam is provided with a crane track. For a large-span crane beam, a heavy crane can generate vertical deflection on the crane beam through running back and forth on the crane beam by a track, and the crane can generate transverse deflection on the crane beam when running left and right on a bridge crane, so that irreversible damage can be generated on the crane beam when the deflection deformation is overlarge, safety accidents are easy to occur, and serious loss is caused by influencing the working progress.
The existing fish-bellied crane girder is easy to shake in the use process, has poor supporting effect and has a low service life.
Disclosure of Invention
In view of the defects of the prior art, the main purpose of the invention is to provide a fish belly type crane girder which is used for controlling the excessive deflection deformation of the crane girder when bearing a large load and ensuring the safety and durability of the crane girder in the use process.
The technical scheme of the invention is as follows: a fish-bellied crane beam comprising: a fish-bellied crane beam body; a prestress tensioning cable is arranged along the lower edge of the fish-bellied crane beam main body; the vertical deflection monitoring system is arranged at one end of the prestress tensioning cable on the fish-bellied crane beam main body; the prestress adjusting and anchoring device is arranged at the other end of the prestress tensioning cable on the fish-bellied crane beam main body; and the vertical deflection monitoring system is associated with one end of the prestress tensioning cable and the prestress adjusting and anchoring device, and is used for sensing the vertical deflection of the fish-bellied crane beam main body through the one end of the prestress tensioning cable and controlling the prestress adjusting and anchoring device to tension the other end of the prestress tensioning cable when the vertical deflection reaches a preset limit value so as to offset the vertical deflection.
In some embodiments, the fish-web crane beam body has an upper flange plate, a lower flange plate, and a fish-web, and a plurality of positioning stiffening plates are vertically spaced on the fish-web, and the positioning stiffening plates are welded and fixed with the upper flange plate, the lower flange plate, and the fish-web.
In some embodiments, a plurality of positioning cable buckles are arranged on the lower flange plate of the fish-bellied crane beam main body, and the prestress tensioning cable is penetrated from the positioning cable buckles.
In some embodiments, the crane rail comprises a crane rail connecting plate fixedly arranged on the upper surface of the upper flange plate of the fish-web crane beam body for installing a crane rail.
In some embodiments, the vertical deflection monitoring system is mounted on a lower flange plate at one end of the fish-bellied crane beam body, comprising:
the transmission sleeve is sleeved at one end of the prestress tensioning cable, and racks are arranged on the upper surface and the lower surface of the transmission sleeve;
the first driving wheel and the second driving wheel are arranged on the upper side and the lower side of the driving sleeve and meshed with racks on the driving sleeve;
the deflection monitor is coupled with the first driving wheel and the second driving wheel.
In some embodiments, the prestress-adjusting anchor is mounted on a lower flange plate at the other end of the fish-web-type crane beam body, comprising:
the penetrating tensioning jack is penetrated through the other end of the prestress tensioning cable and is fixed on the lower flange plate;
the two-hole anchoring plates are arranged on two sides of the through tensioning jack along the penetrating direction and are anchored and fixed through tensioning end anchors.
In some embodiments, the system further comprises a transverse deflection control system, wherein the transverse deflection control system is arranged on the fish-web type web plate of the fish-web type crane girder main body and is used for sensing the transverse deflection of the fish-web type web plate and applying counter force when the transverse deflection reaches a preset limit value so as to offset the transverse deflection.
In some embodiments, the lateral deflection control system comprises:
the transverse stiffening plates are connected between two adjacent positioning stiffening plates along the transverse direction and are welded and fixed with the fish web type web plate of the fish web type crane girder main body and the positioning stiffening plates;
the deflection sensing jack is characterized in that one end of the deflection sensing jack is abutted to the fish belly type web plate of the fish belly type crane beam main body, and the other end of the deflection sensing jack is fixedly connected with the transverse stiffening plate.
In some embodiments, the deflection-sensing jack comprises:
the upper triangular support plate is welded and fixed with one side of the transverse stiffening plate;
one surface of the connecting plate is welded and fixed with the other side of the upper triangular support plate;
two claws of the four-claw connecting frame are fixedly connected with the upper flange plate of the fish-bellied crane girder main body and the other surface of the connecting plate, and the other two claws are fixedly connected with the transverse stiffening plate and the other surface of the connecting plate;
the hydraulic jack is provided with one end which is abutted against the other surface of the connecting plate;
the deflection induction plate is attached between the other end of the hydraulic jack and the fish belly type web plate of the fish belly type crane girder main body.
In some embodiments, the prestress tensioning cable, the vertical deflection monitoring system, the prestress adjusting and anchoring device and the transverse deflection control system are symmetrically arranged on two sides of the fish-web of the fish-web crane beam body.
Compared with the prior art, the invention has the beneficial effects that: the invention provides a fish-bellied crane beam, which can particularly self-sense external prestress, monitor the change of the vertical deflection of the crane beam and automatically adjust the prestress of a tension cable to control the vertical deformation of the fish-bellied crane beam; meanwhile, the deformation of the fish belly type web plate of the crane girder main body is controlled and regulated according to the change of the transverse deflection, so that the safety of the crane girder in the use process is ensured, and the service life of the crane girder is prolonged.
The fish-bellied crane beam provided by the invention is mainly formed by assembling the fish-bellied crane beam main body, the prestress tensioning cable, the vertical deflection monitoring system and the prestress adjusting and anchoring device, can self-sense external prestress, also can self-adjust, has exquisite overall structural design, greatly enhances the deflection deformation resistance of the fish-bellied crane beam, and is simple and quick to construct.
The vertical deflection monitoring system is related to the prestress tensioning cable and the prestress adjusting and anchoring device, senses the vertical deflection of the fish-bellied crane girder main body through the prestress tensioning cable, and controls the prestress adjusting and anchoring device to tension the prestress tensioning cable when the vertical deflection reaches a preset limit value so as to offset the vertical deflection and control the vertical deformation of the prestress tensioning cable.
The vertical deflection monitoring system comprises a transmission sleeve, a first transmission wheel, a second transmission wheel and a deflection monitor, wherein the vertical deflection monitoring system can sense the displacement change of the prestress tensioning cable through the cooperation of the transmission sleeve and the first transmission wheel and the second transmission wheel, and the deflection monitor monitors the vertical deflection of the crane beam according to the displacement change of the prestress tensioning cable.
The prestress adjusting and anchoring device comprises a penetrating tensioning jack and two hole anchoring plates, wherein the penetrating tensioning jack can automatically carry out tensioning adjustment on prestress of a prestress tensioning cable according to vertical deflection change of a crane beam, and the two hole anchoring plates play a role in supporting tensioning ends of the prestress tensioning cable to ensure that the penetrating tensioning jack is firmly tensioned.
The transverse deflection control system is provided with the transverse stiffening plate, so that the transverse deflection resistance of the crane beam can be enhanced, and meanwhile, the deflection sensing jack is arranged for controlling the overlarge transverse deflection deformation of the crane beam.
The prestress tensioning cable provided by the invention is simultaneously fixed on the lower flange plate of the fish-bellied crane beam main body by the positioning cable buckle and the positioning stiffening plate, so that the prestress tensioning cable and the lower flange plate can work cooperatively, and the prestress change can be regulated and controlled in time.
It should be understood that the implementation of any of the embodiments of the invention is not intended to simultaneously possess or achieve some or all of the above-described benefits.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It will be apparent to those skilled in the art from this disclosure that the drawings described below are merely exemplary and that other embodiments may be derived from the drawings provided without undue effort.
The structures, proportions, sizes, etc. shown in the present specification are shown only for the purposes of illustration and description, and are not intended to limit the scope of the invention, which is defined by the claims, but rather by the claims.
FIG. 1 is a schematic view of the overall structure of a fish-bellied crane beam according to some embodiments of the invention;
FIG. 2 is a schematic view of a fish-bellied crane beam according to some embodiments of the invention;
FIG. 3 is a schematic diagram of a vertical deflection monitoring system according to some embodiments of the present invention;
FIG. 4 is a schematic illustration of a prestress adjusting anchor according to some embodiments of the invention;
FIG. 5 is a schematic diagram of a cross deflection control system connection according to some embodiments of the present invention;
fig. 6 is a schematic view of a deflection-sensing jack according to some embodiments of the present invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the embodiments of the present invention will be described in further detail with reference to the embodiments and the accompanying drawings. The exemplary embodiments of the present invention and their descriptions herein are for the purpose of explaining the present invention, but are not to be construed as limiting the invention.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
It should be understood that the terms "comprises/comprising," "consists of … …," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a product, apparatus, process, or method that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such product, apparatus, process, or method as desired. Without further limitation, an element defined by the phrases "comprising/including … …," "consisting of … …," and the like, does not exclude the presence of other like elements in a product, apparatus, process, or method that includes the element.
It is further understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship based on that shown in the drawings, merely to facilitate describing the present invention and to simplify the description, and do not indicate or imply that the devices, components, or structures referred to must have a particular orientation, be configured or operated in a particular orientation, and are not to be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
The implementation of the present invention will be described in detail with reference to the preferred embodiments.
As shown in fig. 1 and 2, the invention provides a fish-bellied crane beam, which is mainly formed by assembling a fish-bellied crane beam main body 1, a prestress tensioning cable 2, a crane track connecting plate 3, a vertical deflection monitoring system 4 and a prestress adjusting and anchoring device 5. The fish-bellied crane beam has exquisite overall structural design and can greatly enhance the deflection deformation resistance of the fish-bellied crane beam.
Specifically, the fish-web crane girder body 1 is provided with an upper flange plate, a lower flange plate and a fish-web plate, and a plurality of positioning stiffening plates 101 are arranged on the fish-web plate along the vertical interval, and the positioning stiffening plates 101 are welded and fixed with the upper flange plate, the lower flange plate and the fish-web plate.
In some embodiments, referring to fig. 2, two positioning holes 1011 are formed at the connection position of each positioning stiffening plate 101 and the lower flange plate corresponding to the prestress tensioning cable 2, so as to facilitate the threading of the prestress tensioning cable 2 and the fixing of the position, and enable the prestress tensioning cable 2 and the fish-bellied crane beam body 1 to work cooperatively.
The prestress tensioning cable 2 is arranged on the lower flange plate of the fish-bellied crane beam body 1.
With continued reference to fig. 2, a plurality of positioning cable buckles 102 are arranged on the lower flange plates of the fish-bellied crane beam main body 1 between adjacent positioning stiffening plates 101 corresponding to the prestress tensioning cables 2, and the positioning cable buckles 102 are uniformly arranged along the length direction of the prestress tensioning cables 2 and used for fixing the prestress tensioning cables 2 on the lower flange plates, so that the prestress tensioning cables 2 and the fish-bellied crane beam main body 1 can work cooperatively and regulate and control prestress changes in time.
In some embodiments, the prestress tensioning cables 2 are provided with 4 cables, which are symmetrically arranged on the left and right sides of the fish web of the fish-web-type crane girder body 1.
In some embodiments, the surface of the prestressed tensioning cable 2 is provided with a tight flexible sheath, which can prevent the prestress loss of the prestressed tensioning cable 2 caused by external factors.
The external factors of the invention are generally the erosion of the prestress tensioning cable 2 by wind, rain, etc.
The crane track connecting plate 3 fixed mounting is in the upper flange plate upper surface of fish-bellied crane beam main part 1 for install the crane track, crane track connecting plate 3 and the upper flange plate collaborative work of fish-bellied crane beam main part 1 can strengthen overall structure's stability, avoids producing to rock in the use.
The vertical deflection monitoring system 4 is arranged on the fish-bellied crane beam main body 1 and is correspondingly arranged at the left end of the prestress tensioning cable 2.
The vertical deflection monitoring system 4 can sense the vertical deflection change of the fish-bellied crane beam main body 1 through the stress change of the prestress tensioning cable 2, and controls the prestress adjusting and anchoring device 5 to tension the prestress tensioning cable 2 when the vertical deflection reaches a preset limit value, so as to control deflection deformation.
In some embodiments, two vertical deflection monitoring systems 4 are provided, symmetrically arranged on the left and right sides of the fish web crane girder body 1.
The prestress adjusting and anchoring device 5 is arranged on the fish-bellied crane beam body 1 and correspondingly arranged at the right end of the prestress tensioning cable 2.
The prestress adjusting and anchoring device 5 is electrically connected or in signal connection with the vertical deflection monitoring system 4 at the right end of the prestress tensioning cable 2, can receive control instructions sent by the vertical deflection monitoring system 4, and is used for tensioning the prestress tensioning cable 2 in time according to the instructions, and prestress is applied to counteract vertical deflection.
In some embodiments, the prestress-adjusting anchoring means 5 are provided in two, symmetrically arranged on the left and right sides of the fish-web crane girder body 1.
In the present invention, regarding how the vertical deflection monitoring system 4 transmits the control command and how the prestress-adjusting anchoring device 5 receives the control command, the present invention is not specifically described since it is not the focus of this patent, and the present invention is basically realized by a person of ordinary skill in the art through the prior art.
Referring to fig. 3, the vertical deflection monitoring system 4 includes a drive sleeve 401, a first drive wheel 402, a second drive wheel 403, and a deflection monitor 404.
The transmission sleeve 401 is sleeved at the left end of the prestress tensioning cable 2 and is fixedly connected with the prestress tensioning cable 2; the first driving wheel 402 and the second driving wheel 403 are arranged on the upper side and the lower side of the driving sleeve 401, racks are arranged on the surface of the driving sleeve 401 corresponding to the positions of the first driving wheel 402 and the second driving wheel 403, and the driving sleeve 401 is in tooth connection with the first driving wheel 402 and the second driving wheel 403 through the racks.
A deflection monitor 404 is mounted on the upper right side of the first drive wheel 402, the deflection monitor 404 being coupled to the first drive wheel 402 and the second drive wheel 403.
The installation position of the deflection monitor 404 is not particularly limited in the present invention, and it is sufficient to ensure that the deflection monitor 404 is coupled to the first transmission wheel 402 and the second transmission wheel 403.
The coupling here may be an electrical connection or a signal connection.
When the crane beam is hoisted, downward tensile stress is generated on the prestress tensioning cable 2, the prestress tensioning cable 2 is tensioned downwards, the transmission sleeve 401 moves along the tensioning direction of the prestress tensioning cable 2, the transmission sleeve 401 drives the first transmission wheel 402 and the second transmission wheel 403 on the upper side and the lower side of the transmission sleeve, the deflection monitor 404 is in signal connection with the first transmission wheel 402 or the second transmission wheel 403, and the deflection monitor 404 can sense the change of the vertical deflection of the crane beam through the transmission of the first transmission wheel 402 and the second transmission wheel 403.
In specific implementation, a strain gauge is stuck on the surface of the first driving wheel 402 or the second driving wheel 403, and the strain gauge is in signal connection with the deflection monitor 404; the strain gauge can monitor the strain force of the prestress tensioning cable 2 through the transmission of the first transmission wheel 402 or the second transmission wheel 403, and transmits the monitored value to the deflection monitor 404, and the deflection monitor 404 can analyze the strain force to display the vertical deflection of the crane beam under the strain.
In some embodiments, with continued reference to FIG. 3, the vertical deflection monitoring system 4 further includes a monitoring tank 405. The monitoring box 405 is mounted on the fish-bellied crane beam body 1, and the left end of the prestress tensioning cable 2 passes through the monitoring box 405 and is fixedly connected through a fixed end anchor 406.
The transmission sleeve 401, the first transmission wheel 402, the second transmission wheel 403 and the deflection monitor 404 are all arranged in the monitoring box 405 and are used for protecting all parts from being damaged by external environments such as wind blowing, sun drying and the like.
Referring to fig. 4, the prestress-adjusting anchor 5 is mounted on a lower flange plate of the right end of the fish-bellied crane girder body 1. The prestress-adjusting anchoring device 5 comprises a through-type tensioning jack 501 and a two-hole anchoring plate 502.
The penetrating tensioning jack 501 is penetrated at the right end of the prestress tensioning cable 2 and is fixed on the lower flange plate of the crane beam main body 1.
The penetrating tensioning jack 501 is in signal connection with the deflection monitor 404, and can receive the command of tensioning the prestress tensioning cable 2 sent by the deflection monitor 404 and perform prestress tensioning on the prestress tensioning cable 2 in time.
Two hole anchor plates 502 are arranged on the left side and the right side of the through type tensioning jack 501 along the penetrating direction and are anchored and fixed through tensioning end anchors 503.
In the invention, the two-hole anchor plate 502 plays a role in supporting the tension end of the prestress tension cable 2 to carry out smooth and stable tension according to a preset track, preventing the influence of eccentricity or dislocation in the prestress application process and ensuring the stable tension of the through-type tension jack 501.
In a specific embodiment, when the vertical deflection monitoring system 4 monitors that the vertical deflection of the fish-bellied crane girder main body 1 reaches 1/1000 of the span of the bent member, the bridge crane is controlled to stop running, and meanwhile, the prestress adjusting anchoring device 5 is controlled to stretch the prestress tensioning cable 2, so that prestress is applied to counteract the vertical deflection.
Further, when the bridge crane runs through, the vertical deflection monitoring system 4 controls the prestress adjusting and anchoring device 5 to release the applied prestress so as to enable the fish-bellied crane beam body 1 to be restored to the normal state.
It is easy to understand that the control can be directly controlled by the vertical deflection monitoring system 4, or can be indirectly controlled by a mobile terminal externally connected with the vertical deflection monitoring system 4 and controlling the prestress adjusting and anchoring device 5 in a signal mode, the concrete control mode is not limited, and when the vertical deflection reaches the preset limit value set by the vertical deflection monitoring system, the prestress adjusting and anchoring device 5 can stretch the prestress tensioning cable 2, so that the vertical deflection change is controlled.
With continued reference to fig. 1, the web hoist beam further includes a transverse deflection control system 6, the transverse deflection control system 6 being disposed on the web of the web hoist beam body 1.
In some embodiments, the transverse deflection control systems 6 are four, and are symmetrically arranged on the left and right sides of the web-shaped crane girder body 1 in pairs along the middle position of the top of the web-shaped web.
The transverse deflection control system 6 can monitor the change of the transverse deflection of the fish-bellied crane beam, control and regulate the deformation of the fish-bellied web of the fish-bellied crane beam main body 1 according to the change of the transverse deflection, ensure the safety of the crane beam in the use process and improve the service life of the crane beam.
Referring to fig. 5, the transverse deflection control system 6 includes a transverse stiffening plate 601 and a deflection induction jack, wherein the transverse stiffening plate 601 is connected between two adjacent positioning stiffening plates 101 along a transverse direction, and the transverse stiffening plate 601 is welded and fixed with the fish web of the fish web crane beam body 1 and the positioning stiffening plates 101 for enhancing the connection strength of the transverse deflection control system 6.
The deflection sensing jack is arranged above the transverse stiffening plate 601, one end of the deflection sensing jack is abutted against the fish belly type web plate of the fish belly type crane girder main body 1, and the other end of the deflection sensing jack is fixedly connected with the transverse stiffening plate 601.
According to the invention, the deflection sensing jack can sense the transverse deflection of the fish-web type web plate of the fish-web type crane girder main body 1, and can apply counter force when the transverse deflection reaches a preset limit value, so as to offset the transverse deflection and control the transverse deformation of the crane girder.
Referring to fig. 6, the deflection sensing jack includes an upper triangle support plate 603, a connection plate 604, a four-jaw connection frame 605, a hydraulic jack 606, a deflection sensing disc 607, and a displacement monitor 608.
The upper triangular support plate 603 is a right-angle thick steel plate and is supported above the transverse stiffening plate 601, and a right-angle edge of the upper triangular support plate 603 is welded and fixed with the transverse stiffening plate 601; the connecting plate 604 is a square steel plate and is arranged on the same plane with the fish belly type web, one surface of the connecting plate, which faces away from the fish belly type web, is welded and fixed with the other right-angle side of the upper triangular supporting plate 603, and the surface, which faces the fish belly type web, is connected with the four-claw connecting frame 605. The connecting plate 604 can play the effect of stable support to the hydraulic jack 606, prevents that the hydraulic jack 606 from producing too big counter-force and taking place eccentrically at the during operation, and the connecting plate size is slightly greater than the hydraulic jack base and does not have full coverage simultaneously, can make things convenient for the observation and the maintenance of later stage to the hydraulic jack 606.
The four-claw connecting frame 605 comprises a frame cylinder and four claws, one ends of the four claws are welded and fixed with the frame cylinder, the other ends of the two claws in the four claws are connected and fixed with the upper flange plate of the fish-bellied crane beam main body 1 by connecting a transverse connecting sheet, the other ends of the other two claws are also connected and fixed with the transverse stiffening plate 601 by connecting a transverse connecting sheet, one end of the frame cylinder is connected and fixed with one surface of the connecting plate 604 opposite to the fish-bellied web, and the other ends of the frame cylinder are nested on the hydraulic jack 606. The four-jaw connecting frame 605 can enhance the connection strength of the deflection sensing jack, and the open four jaws provide maintenance space, so that the device can be conveniently detected and maintained at a later stage.
One end of the hydraulic climbing roof 606 passes through the frame cylinder to be abutted against one surface of the connecting plate 604, which is opposite to the fish belly type web, and the other end of the hydraulic climbing roof is connected with a deflection induction disc 607; the deflection sensing disc 607 is attached between the other end of the hydraulic jack 606 and the fish-web of the fish-web hoist beam body 1. The deflection sensor disk 607 can monitor the transverse deflection change of the fish-web crane girder body 1.
The displacement monitor 608 is installed on the outer surface of the hydraulic jack 606, and is used for sensing the displacement change of the hydraulic jack 606, further calculating the change of the transverse deflection by a computer system, and timely issuing a command to apply proper prestress to counteract the transverse deflection.
In a specific embodiment, when the deflection sensing jack monitors that the transverse deflection of the fish-web crane beam body 1 reaches 1/2200 of the span of the braking structure, the deflection deformation of the fish-web of the fish-web crane beam body 1 is limited, the hydraulic jack 606 is controlled to apply force to counteract the generated deflection, and the hydraulic jack 606 is controlled to restore to the original position after the transverse deflection disappears.
The deflection sensing disc 607 of the deflection sensing jack can monitor the transverse deflection change of the fish-web type web plate of the fish-web type crane beam main body 1 and transmit the deflection change to the mobile terminal; the mobile terminal controls the hydraulic jack 606 to apply hydraulic pressure to counteract deflection deformation, and controls the hydraulic jack 606 to return to the original state when lateral deflection is lost.
The deflection sensing disc 607 can be used alone or together with the displacement monitor 608, because the transverse deflection is very small, the monitoring precision of the transverse deflection can be improved, and the efficiency of releasing the prestress of the jack is improved.
It is easy to understand that the mobile terminal here, which is connected to the vertical deflection monitoring system 4 and the controlling prestress-adjusting anchoring device 5, is a mobile terminal, which may be a mobile phone mobile terminal or a computer mobile terminal.
In some embodiments, the transverse deflection control system 6 further includes a lower triangular support plate 602, the lower triangular support plate 602 being a right angle thick steel plate, the support being disposed below the transverse stiffener 601 for enhancing the connection strength of the transverse stiffener 601.
In some embodiments, the size of the lower triangular support plate 602 is greater than the size of the upper triangular support plate 603.
The fish-bellied crane beam provided by the invention can monitor the change of the vertical deflection of the crane beam and automatically adjust the prestress of the prestress tension cable, and simultaneously control and adjust the transverse deflection of the fish-bellied web of the fish-bellied crane beam main body according to the change of the transverse deflection, thereby ensuring the safety of the crane beam in the use process and prolonging the service life of the crane beam.
It is easy to understand by those skilled in the art that the above preferred embodiments can be freely combined and overlapped without conflict.
The foregoing description of the preferred embodiments of the invention is not intended to limit the invention to the particular forms disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.
Claims (7)
1. A fish-bellied crane beam, comprising:
the fish-bellied crane girder body (1) is provided with an upper flange plate, a lower flange plate and a fish-bellied web, a plurality of positioning stiffening plates (101) are arranged on the fish-bellied web at vertical intervals, and the positioning stiffening plates (101) are welded and fixed with the upper flange plate, the lower flange plate and the fish-bellied web;
the prestress tensioning cable (2) is arranged along the lower edge of the fish-bellied crane beam main body (1);
the vertical deflection monitoring system (4) is arranged at one end of the prestress tensioning cable (2) on the fish-bellied crane beam main body (1);
the prestress adjusting and anchoring device (5) is arranged at the other end of the prestress tensioning cable (2) on the fish-bellied crane beam main body (1); the vertical deflection monitoring system (4) is associated with one end of the prestress tensioning cable (2) and the prestress adjusting and anchoring device (5) and is used for sensing the vertical deflection of the fish-bellied crane beam main body (1) through the one end of the prestress tensioning cable (2) and controlling the prestress adjusting and anchoring device (5) to stretch the other end of the prestress tensioning cable (2) when the vertical deflection reaches a preset limit value so as to offset the vertical deflection;
the transverse deflection control system (6) is arranged on the fish-web type web plate of the fish-web type crane girder body (1) and is used for sensing the transverse deflection of the fish-web type web plate and applying counter force when the transverse deflection reaches a preset limit value so as to offset the transverse deflection; and the lateral deflection control system (6) comprises:
the transverse stiffening plates (601) are transversely connected between two adjacent positioning stiffening plates (101) and are welded and fixed with the fish web type web plates of the fish web type crane girder main body (1) and the positioning stiffening plates (101);
the deflection sensing jack is characterized in that one end of the deflection sensing jack is abutted to the fish belly type web plate of the fish belly type crane girder body (1), and the other end of the deflection sensing jack is fixedly connected with the transverse stiffening plate (601).
2. The fish-bellied crane beam according to claim 1, characterized in that the lower flange plate of the fish-bellied crane beam body (1) is provided with a plurality of positioning cable buckles (102), and the prestress tensioning cable (2) is penetrated from the positioning cable buckles (102).
3. The fish-web crane girder according to claim 1, further comprising a crane rail connection plate (3) fixedly mounted on an upper surface of the upper flange plate of the fish-web crane girder body (1) for mounting a crane rail.
4. Fish-web crane girder according to claim 1, characterized in that the vertical deflection monitoring system (4) is mounted on the lower flange plate of one end of the fish-web crane girder body (1), comprising:
the transmission sleeve (401) is sleeved at one end of the prestress tensioning cable (2), and racks are arranged on the upper surface and the lower surface of the transmission sleeve (401);
the first transmission wheel (402) and the second transmission wheel (403), wherein the first transmission wheel (402) and the second transmission wheel (403) are arranged on the upper side and the lower side of the transmission sleeve (401) and are meshed with racks on the transmission sleeve (401);
-a deflection monitor (404), the deflection monitor (404) being coupled with the first (402) and second (403) drive wheels.
5. Fish-web crane girder according to claim 1, characterized in that the prestressing adjusting anchor (5) is mounted on the lower flange plate at the other end of the fish-web crane girder body (1), comprising:
the penetrating type tensioning jack (501) is penetrated through the other end of the prestress tensioning cable (2) and is fixed on the lower flange plate;
the two-hole anchor plates (502), wherein the two-hole anchor plates (502) are arranged on two sides of the through tensioning jack (501) along the penetrating direction and are anchored and fixed through tensioning end anchors (503).
6. The fish-web hoist beam of claim 1, characterized in that the deflection-sensing jack includes:
an upper triangular support plate (603), wherein one side of the upper triangular support plate (603) is welded and fixed with the transverse stiffening plate (601);
one surface of the connecting plate (604) is welded and fixed with the other side of the upper triangular support plate (603);
the four-claw connecting frame (605), wherein two claws of the four-claw connecting frame (605) are fixedly connected with the upper flange plate of the fish-bellied crane girder main body (1) and the other surface of the connecting plate (604), and the other two claws are fixedly connected with the transverse stiffening plate (601) and the other surface of the connecting plate (604);
a hydraulic jack (606), wherein one end of the hydraulic jack (606) is abutted against the other surface of the connecting plate (604);
the deflection induction disc (607), the deflection induction disc (607) is attached between the other end of the hydraulic jack (606) and the fish belly web of the fish belly type crane beam main body (1).
7. The fish-web crane girder according to claim 1, wherein the prestress tensioning cable (2), the vertical deflection monitoring system (4), the prestress adjusting and anchoring device (5) and the transverse deflection control system (6) are symmetrically arranged on two sides of the fish-web of the fish-web crane girder body (1).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311126602.7A CN116873757B (en) | 2023-09-04 | 2023-09-04 | Fish-bellied crane girder |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311126602.7A CN116873757B (en) | 2023-09-04 | 2023-09-04 | Fish-bellied crane girder |
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| CN116873757B true CN116873757B (en) | 2023-12-05 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102839675A (en) * | 2012-09-25 | 2012-12-26 | 上海新强劲工程技术有限公司 | Long-span pre-stress fish belly sill for foundation pit support and mounting method thereof |
| CN205777534U (en) * | 2016-07-18 | 2016-12-07 | 温州市欧美金属制品有限公司 | Pretensioner for form cable |
| CN215441927U (en) * | 2021-07-02 | 2022-01-07 | 上海强劲地基工程股份有限公司 | Steel pipe and fish-belly sill combination formula underground structure |
| CN115897599A (en) * | 2021-08-05 | 2023-04-04 | 上海域邦建设集团有限公司 | Prestressed fish belly formula foundation ditch steel bearing structure |
| CN219410591U (en) * | 2023-03-15 | 2023-07-25 | 中交公规土木大数据信息技术（北京）有限公司 | Deflection adjusting device for prestressed bridge |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE202012003907U1 (en) * | 2012-04-19 | 2012-05-15 | Igus Gmbh | Monitoring system for tensile and compressive forces in an energy supply chain and corresponding force transducer |
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- 2023-09-04 CN CN202311126602.7A patent/CN116873757B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102839675A (en) * | 2012-09-25 | 2012-12-26 | 上海新强劲工程技术有限公司 | Long-span pre-stress fish belly sill for foundation pit support and mounting method thereof |
| CN205777534U (en) * | 2016-07-18 | 2016-12-07 | 温州市欧美金属制品有限公司 | Pretensioner for form cable |
| CN215441927U (en) * | 2021-07-02 | 2022-01-07 | 上海强劲地基工程股份有限公司 | Steel pipe and fish-belly sill combination formula underground structure |
| CN115897599A (en) * | 2021-08-05 | 2023-04-04 | 上海域邦建设集团有限公司 | Prestressed fish belly formula foundation ditch steel bearing structure |
| CN219410591U (en) * | 2023-03-15 | 2023-07-25 | 中交公规土木大数据信息技术（北京）有限公司 | Deflection adjusting device for prestressed bridge |
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| CN116873757A (en) | 2023-10-13 |
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