CN112982172B - Bridge girder erection machine and erection method using bridge girder erection machine - Google Patents
Bridge girder erection machine and erection method using bridge girder erection machine Download PDFInfo
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- CN112982172B CN112982172B CN202110196042.7A CN202110196042A CN112982172B CN 112982172 B CN112982172 B CN 112982172B CN 202110196042 A CN202110196042 A CN 202110196042A CN 112982172 B CN112982172 B CN 112982172B
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
Abstract
The invention discloses a bridge girder erection machine and an erection method using the bridge girder erection machine. Through the concrete setting of overhead traveling crane driving system, can pass through the setting of beam piece fixed establishment, can accomplish reciprocating of beam piece, adjust to suitable horizontal position and indulge and move and the sideslip, gravity G through the beam piece can be obtained to weight sensor, then angle value alpha through the bridge girder erection machine of spirit level measuring, according to different alpha and G value, combine hydraulic motor's rated power, can adjust the speed of indulging and moving and the sideslip in real time, can also design the two-stage and indulge and move the mechanism, can accelerate the construction progress greatly through the setting up of the two-stage structure of indulging. The locking mechanism can be arranged to lock under certain conditions, and the safety of the whole bridging process can be ensured.
Description
Technical Field
The invention relates to the field of bridges, in particular to a bridge girder erection machine and an erection method using the bridge girder erection machine.
Background
The bridge girder erection machine is equipment for placing prefabricated beam pieces on a prefabricated bridge pier. The bridge girder erection machine belongs to the category of cranes because its main function is to lift the girder and then transport it into position and put it down.
Bridge cranes are very different from cranes in general. The required conditions are harsh, and the beam piece runs upwards or is called longitudinal movement. 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.
Prior art patent CN 2018107408378 discloses a bridge girder erection machine and a girder erection method. Belongs to the technical field of bridge erection. It mainly provides a novel bridge girder erection machine without a lower guide beam and a girder erection method thereof. It is mainly characterized in that: the lifting device comprises a main beam, a front supporting leg, an auxiliary supporting leg, a rear supporting leg, a front crane trolley, a rear crane trolley, a lifting mechanism, a hydraulic system and an electrical system; the lower part of the main beam is longitudinally provided with a beam piece, the upper end of the front supporting leg is provided with a walking wheel train, and the walking wheel train and the beam piece form longitudinal rolling fit; the upper end of the auxiliary supporting leg is hinged with the middle part of the main beam, and a turnover mechanism is arranged between the auxiliary supporting leg and the main beam; the rear supporting legs are of an enclosed leg structure, and the upper parts of the rear supporting legs are fixedly connected with the main beam; the hoisting mechanism, the front hoisting crown block and the rear hoisting crown block form a beam erecting hoisting system through steel wire ropes. The invention has the characteristics of no need of configuring a lower guide beam, integration of span change and via hole operation of the bridge girder erection machine into the same flow and stronger applicability, and is mainly used for the bridge girder erection machine which passes through a tunnel and is matched with a low-level girder transport vehicle and the bridge girder erection method.
The prior art patent CN 201811576355X discloses a bridge girder erection machine configuration evaluation method based on a combined weighting-improved gray correlation method. The method comprises the steps of establishing an evaluation index system for bridge girder erection machine selection according to bridge girder erection machine limiting factors of a laying and erecting project and construction period cost influence factors, determining a selection range of the bridge girder erection machine through adaptive index evaluation, then weighting effectiveness indexes by adopting a FAHP-CRITIC combined weighting method, and establishing a TOPSIS-gray correlation projection evaluation model for evaluating the effectiveness of alternative equipment, thereby determining an optimal equipment scheme. Through engineering example analysis, the optimal bridging equipment is determined, the result of the optimal bridging equipment is consistent with the actual engineering, the evaluation model is proved to have feasibility and reliability, and actual reference can be provided for selection of a bridging machine of the bridging engineering.
However, the girder erection trolley power mechanism of the bridge girder erection machine in the prior art has a need for further improvement in both transmission efficiency and bridge erection safety. And the bridge girder erection machine in the prior art does not have a control feedback system for safe speed regulation. When the bridge girder erection machine is constructed in a downhill state, a corresponding response and feedback device and method are lacked.
Disclosure of Invention
The invention mainly aims to provide a bridge girder erection machine and an erection method using the bridge girder erection machine, which can effectively solve the problems in the background technology.
In order to achieve the purpose, the invention adopts the technical scheme that:
the utility model provides a bridge girder erection machine, puts the support in including, anti-support, crossbeam, leading support, rearmounted support, overhead traveling crane driving system, its characterized in that: the crown block power system comprises a speed regulating mechanism, a beam piece fixing mechanism, a locking mechanism and a control mechanism; the speed regulating mechanism comprises a speed regulating mechanism fixing piece, a transverse moving speed regulating mechanism and a longitudinal speed regulating mechanism; the control mechanism comprises a weight sensor, a level meter, a speed sensor and a controller; the speed regulating mechanism fixing piece is clamped on the cross beam, and the controller is arranged on the speed regulating mechanism fixing piece; the speed sensor comprises a transverse moving speed sensor and a longitudinal moving speed sensor; the transverse moving speed regulating mechanism comprises a transverse moving rotating shaft, a transverse moving rod, a transverse moving adjusting part outer cylinder and an end fixing block; the transverse moving rod is provided with a transverse moving rack; a locking mechanism is arranged on the inner side of the outer cylinder of the transverse moving adjusting component; a transverse moving speed sensor is arranged on one side of the transverse moving rotating shaft, and can measure the transverse moving speed so as to correct and control the rotating speed of the transverse moving rotating shaft; the transverse moving rotating shaft is connected with a transverse moving motor; the longitudinal movement speed regulating mechanism comprises a longitudinal movement rotating shaft, a longitudinal movement rod, a longitudinal movement adjusting part outer cylinder and an end fixing block; the longitudinal moving rod is provided with a longitudinal moving rack; a locking mechanism is arranged on the inner side of the outer cylinder of the longitudinal movement adjusting component; a longitudinal movement speed sensor is arranged on one side of the longitudinal movement rotating shaft and can measure the longitudinal movement speed; the longitudinal moving rotating shaft is connected with a longitudinal moving motor; the locking mechanism is connected with the controller; the weight sensor is connected with the controller; the level gauge is connected with the controller; the transverse moving speed sensor is connected with the controller; the longitudinal movement speed sensor is connected with the controller; the transverse moving rotating shaft is connected with the controller; the longitudinal moving rotating shaft is connected with a controller; the transverse moving motor is connected with the controller; the longitudinal movement motor is connected with the controller. Through the concrete setting of overhead traveling crane driving system, can carry out safe quick sideslip and indulge and move, improve the efficiency of construction, can also design the two-stage and indulge and move the mechanism, indulge through the two-stage and move the setting of structure and can accelerate the construction progress greatly. The locking mechanism can be arranged to lock under certain conditions, and the safety of the whole bridging process can be ensured.
Preferably, the longitudinal movement speed regulating mechanism comprises a longitudinal movement speed regulating mechanism I and a longitudinal movement speed regulating mechanism II; the first longitudinal movement speed regulating mechanism and the second longitudinal movement speed regulating mechanism are arranged on the same straight line or in parallel; the first longitudinal movement speed regulating mechanism comprises a first longitudinal movement speed sensor, a first longitudinal movement rotating shaft, a first longitudinal movement regulating component outer cylinder, a first longitudinal movement rack and an end fixing block, wherein the first longitudinal movement speed sensor is arranged on one side of the first longitudinal movement rotating shaft, the first longitudinal movement rotating shaft is connected with a first longitudinal movement motor, and the first longitudinal movement speed sensor can measure the first longitudinal movement speed and input the measured first longitudinal movement speed to the controller to correct and control the rotating speed of the first longitudinal movement rotating shaft; the second longitudinal movement speed regulating mechanism comprises a second longitudinal movement speed sensor, a second longitudinal movement rotating shaft, a second longitudinal movement regulating component outer cylinder, a second longitudinal movement rack and an end fixing block, the second longitudinal movement speed sensor is arranged on two sides of the second longitudinal movement rotating shaft, the second longitudinal movement rotating shaft is connected with a second longitudinal movement motor, and the second longitudinal movement speed sensor can measure the second longitudinal movement speed and input the second longitudinal movement speed to a controller to correct and control the rotating speed of the second longitudinal movement rotating shaft; the angle measured by the level is α;
when 0< alpha <0.5 deg.,
when 0.5 ° < α <1 °,
V2＝0；
wherein V1 represents the target linear velocity of the first vertical movement velocity, V2 represents the target linear velocity of the second vertical movement velocity, P1 represents the rated power of the first vertical movement motor, P2 represents the rated power of the second vertical movement motor, G represents the gravity measured by the weight sensor, and α represents the angle measured by the level gauge. Can accomplish reciprocating of beam piece through the setting of beam piece fixed establishment, adjust to suitable horizontal position and indulge and move and the sideslip, can obtain the gravity G of beam piece in real time through weighing sensor, then through the angle value alpha of the bridge crane of spirit level measurement, according to different alpha and G values, combine hydraulic motor's rated power, the speed that reasonable indulged and move and the sideslip can be calculated to the controller, can accelerate the construction progress greatly.
Preferably, the beam piece fixing mechanism is used for fixing a beam piece, a buffer layer is arranged on the inner wall of the beam piece fixing mechanism, the shape of the inner wall of the beam piece fixing mechanism is matched with the shape of the upper part of the beam piece to be erected, a weight sensor is arranged in the beam piece fixing mechanism, and gradienters are arranged on two sides of the beam piece fixing mechanism; the upper end of the beam piece fixing mechanism is connected with a hydraulic cylinder; the hydraulic cylinder comprises a horizontal moving hydraulic cylinder and a vertical moving hydraulic cylinder; the horizontal moving hydraulic cylinder is used for shrinking and clamping the beam piece fixing mechanism from two sides; and the vertical moving hydraulic cylinder is used for moving the beam piece fixing mechanism up and down. Through the above-mentioned setting on the pneumatic cylinder, can require the height of adjustment beam piece according to different construction operating mode.
Preferably, when α >1 °, V1 ═ 0, V2 ═ 0; the controller sends out a signal to control the locking mechanism to be locked inwards. Through the control algorithm, danger in the erection process of the bridge girder erection machine can be avoided in time, and compared with manual start and stop, the safety is high, and the response speed is faster.
Preferably, the upper end of the beam piece fixing mechanism is connected with a hydraulic cylinder; the beam piece fixing mechanism comprises a level meter clamping block, an air outlet, an outer fixing block, an inner fixing block and a clamping buffer piece; the air outlet is connected with a warm air blower; the fan heater is arranged at the lower part of the beam piece fixing mechanism, and the level instrument clamping blocks are arranged at two sides of the beam piece fixing mechanism to clamp the level instruments; the inner fixed block is fixedly connected with the transverse moving speed regulating mechanism; a level meter clamping block is fixedly arranged between the outer fixing block and the inner fixing block; the level meter clamping blocks are arranged on two horizontal sides parallel to the cross beam, and clamping buffering parts are arranged between the two level meter clamping blocks. The fan heater near the level meter can be started under extreme conditions, so that normal construction under conditions of low temperature, rainfall and the like is avoided.
Preferably, the speed regulating mechanism fixing part comprises a lower clamping part, a clamping buffer block and an upper clamping part; one sides of the lower clamping part and the upper clamping part are connected with the fixed speed regulating mechanism; the lower clamping part and the upper clamping part are fixed through a clamping and fixing component; clamping buffer blocks are further arranged inside the lower clamping part and the upper clamping part; the inner side of the longitudinal moving channel is provided with a clamping buffer block. The service life of the clamping part can be effectively prolonged through the setting of the buffer block, and the weight sensor can be conveniently overhauled and replaced.
Preferably, the locking mechanism is wirelessly connected with the controller; the weight sensor is wirelessly connected with the controller; the level meter is wirelessly connected with the controller; the transverse moving speed sensor is in wireless connection with the controller; the longitudinal movement speed sensor is wirelessly connected with the controller; the transverse moving rotating shaft is in wireless connection with the controller; the longitudinal moving rotating shaft is wirelessly connected with the controller; the transverse moving motor is wirelessly connected with the controller; the longitudinal movement motor is wirelessly connected with the controller; the controller internally comprises a PLC module, an intelligent PID regulator, a frequency converter and a rotating speed transmitter; the PLC module receives a switching signal, a frequency converter signal and a rotating speed transmitter signal; the intelligent PID regulator receives a set speed signal; the intelligent PID regulator receives a tachometer signal; the frequency converter receives a PLC module signal and an intelligent PID regulator signal; the motor receives a frequency converter signal; the speed transmitter receives a shaft speed signal. The arrangement can avoid line connection faults and can also effectively control the longitudinal movement speed and the transverse movement speed in real time.
In addition, the invention also adopts the technical scheme that: an erection method of a bridge girder erection machine comprises the following steps:
a, construction preparation: cleaning a region to be constructed, and erecting a construction isolation net; the bridge girder erection machine is checked to ensure that the requirements of safety specifications are met;
b, bridge girder erection machine preparation: laying sleepers, and erecting a middle support, a reverse support, a cross beam, a front support and a rear support to proper positions; the speed regulating structure fixing piece is arranged on one side of the bridge girder erection machine, the distance between the lower clamping part and the upper clamping part is reduced through the regulation of the fixed speed regulating mechanism, and when the distance between the lower clamping part and the upper clamping part reaches a fixed position, the locking mechanism on the speed regulating structure fixing piece is opened to enable the speed regulating structure fixing piece to complete the fixing;
c, moving and transporting the beam piece: placing the beam piece to be erected on a beam transporting trolley, and opening the beam transporting trolley to a proper position below the bridge girder erection machine;
d, longitudinally moving the beam piece: the upper end of the beam piece fixing mechanism is connected with a hydraulic cylinder; the hydraulic cylinder comprises a horizontal moving hydraulic cylinder and a vertical moving hydraulic cylinder; the horizontal moving hydraulic cylinder is used for shrinking and clamping the beam piece fixing mechanism from two sides; the vertical moving hydraulic cylinder is used for moving the beam piece fixing mechanism up and down; the beam piece fixing mechanism clamps a beam piece to be erected and lifts the beam piece to a certain height, and the controller receives signals of the level gauge and the weight sensor and outputs a longitudinal movement rotating speed signal; in the process of longitudinal movement, the longitudinal movement speed can be measured by the longitudinal movement speed sensor and is input into the controller to correct and control the rotating speed of the longitudinal movement rotating shaft;
e, transverse moving of the beam pieces: after the longitudinal movement of the beam piece is finished, the controller receives a longitudinal movement finishing signal; the controller outputs signals to control the locking mechanism in the longitudinal movement speed regulating mechanism to be locked and start to transversely move, the controller outputs a transverse moving rotating speed V3,
when 0< alpha <0.5 deg.,
when 0.5 degree<α<At the time of 1 degree, the temperature of the steel wire is controlled,
when 1 ° < α, V3 ═ 0;
in the transverse moving process, the transverse moving speed can be measured by a transverse moving speed sensor and input into a controller to correct and control the rotating speed of the transverse moving rotating shaft;
f, placing the beam pieces: after the beam piece is transversely moved, the controller receives a transverse moving end signal; the controller outputs signals to control the locking mechanism in the transverse movement speed regulating mechanism to be locked; placing the beam piece to be erected at a proper position through the beam piece fixing mechanism;
g, erecting the next beam piece, and repeating the steps A-F until the beam piece is erected;
and after the H beam pieces are erected, removing the bridge erecting machine according to safe operation rules, and dismantling the construction isolation net.
Compared with the prior art, the construction method can quickly and safely erect the beam pieces.
Preferably, in the step D, the longitudinal shift rotation speed signals are V1 and V2; the angle measured by the level is α;
when 0< alpha <0.5 deg.,
when 0.5 ° < α <1 °,
V2＝0；
wherein, V1 represents the target linear velocity of the first vertical movement speed, V2 represents the target linear velocity of the second vertical movement speed, P1 represents the rated power of the first vertical movement motor, P2 represents the rated power of the second vertical movement motor, G represents the gravity measured by the weight sensor, and α represents the angle measured by the level meter. The gravity G of the beam piece can be obtained in real time through the weight sensor, then the angle value alpha of the bridge girder erection machine measured through the level meter is combined with the rated power of the hydraulic motor according to different alpha and G values, the controller can calculate the reasonable longitudinal moving and transverse moving speeds, and the construction progress can be greatly accelerated through the arrangement of the two-stage longitudinal moving structure.
Preferably, in step F, the controller internally includes a PLC module, an intelligent PID regulator, a frequency converter, and a rotational speed transmitter; the control logic of the controller is that the PLC module receives a switch signal, a frequency converter signal and a rotating speed transmitter signal; the intelligent PID regulator receives a set speed signal; the intelligent PID regulator receives a tachometer signal; the frequency converter receives a PLC module signal and an intelligent PID regulator signal; the motor receives a frequency converter signal; the speed transmitter receives a shaft speed signal.
The arrangement can effectively control the longitudinal movement speed and the transverse movement speed.
Compared with the prior art, the invention has the following beneficial effects: the bridge girder erection machine and the erection method using the bridge girder erection machine can adjust the height of a beam according to different construction working condition requirements through the specific setting of a crown block power system through the setting on a hydraulic cylinder, adjust the height of the beam to a proper horizontal position for longitudinal movement and transverse movement, obtain the gravity G of the beam in real time through a weight sensor, measure the angle value alpha of the bridge girder erection machine through a level gauge, adjust the speed of the longitudinal movement and the transverse movement in real time according to different alpha and G values and by combining the rated power of a hydraulic motor, and greatly accelerate the construction progress through the setting of a two-stage longitudinal movement structure. The locking mechanism can be arranged to lock under certain conditions, and the safety of the whole bridging process can be ensured. The controller can calculate reasonable longitudinal movement and transverse movement speed, and construction progress can be greatly accelerated. This application can in time avoid the danger of bridge crane erection in-process, compares and stops in the manual work, and the security is high, and response speed is faster. The fan heater near the level meter can be started under extreme conditions, so that normal construction under conditions of low temperature, rainfall and the like is avoided. The service life of the clamping part can be effectively prolonged through the setting of the buffer block, and the weight sensor can be conveniently overhauled and replaced.
Drawings
FIG. 1 is a schematic structural diagram of a conventional bridge girder erection machine;
FIG. 2 is a top view of the crown block power system of the present invention;
FIG. 3 is a partial front view of the crown block power system of the present invention;
FIG. 4 is a schematic diagram of a lateral cross-sectional structure of the speed regulating mechanism of the present invention;
FIG. 5 is a schematic diagram of the cross-sectional structure of the beam fixing mechanism of the present invention;
FIG. 6 is a schematic diagram of a longitudinal movement section structure of the speed regulating mechanism of the present invention;
fig. 7 is a diagram showing the structure of the control system of the present invention.
The labels in the figure are: 1. the device comprises a beam piece, 2, a speed regulating mechanism fixing part, 3, a beam piece fixing mechanism, 4, a transverse moving speed regulating mechanism, 5, a longitudinal moving speed regulating mechanism I, 6, a longitudinal moving speed regulating mechanism II, 7, a buffer layer, 8, a transverse moving rotating shaft, 9, a gradienter, 10, a transverse moving regulating component outer cylinder, 11, a longitudinal moving regulating component outer cylinder, 12, a longitudinal moving rotating shaft II, 13, a transverse moving rod, 14, an end fixing block, 15, a longitudinal moving rod, 16, a controller, 17, a gradienter clamping block, 18, an air outlet, 19, an outer fixing block, 20, a clamping buffer piece, 21, a lower clamping part, 22, a clamping buffer block, 23, a longitudinal moving channel, 24, an upper clamping part, 25, a locking mechanism, 26, an inner fixing block, 27, a fixed speed regulating rotating shaft, 28, a weight sensor, 29, a longitudinal moving rack, 30 and a fixed speed regulating mechanism.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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 invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be configured in a specific orientation, and operate, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, such as "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1-6, in embodiment 1, a bridge girder erection machine includes a middle support, a reverse support, a beam, a front support, a rear support, a crown block, and a crown block power system, wherein: the crown block power system comprises a speed regulating mechanism, a beam piece fixing mechanism 3, a locking mechanism 25 and a control mechanism; the speed regulating mechanism comprises a speed regulating mechanism fixing part 2, a transverse moving speed regulating mechanism 4 and a longitudinal speed regulating mechanism; the control mechanism comprises a weight sensor 28, a level gauge 9, a speed sensor, a controller 16; the speed regulating mechanism fixing part 2 is clamped on the cross beam, and the controller 16 is arranged on the speed regulating mechanism fixing part 2; the speed sensor comprises a transverse moving speed sensor and a longitudinal moving speed sensor; the transverse moving speed regulating mechanism 4 comprises a transverse moving rotating shaft 8, a transverse moving rod 13, a transverse moving adjusting part outer cylinder 10 and an end fixing block 14; the transverse moving rod 13 is provided with a transverse moving rack; a locking mechanism 25 is arranged on the inner side of the outer cylinder 10 of the transverse moving adjusting component; a transverse moving speed sensor is arranged on one side of the transverse moving rotating shaft 8, and can measure the transverse moving speed so as to correct and control the rotating speed of the transverse moving rotating shaft 8; the transverse moving rotating shaft 8 is connected with a transverse moving motor; the longitudinal movement speed regulating mechanism comprises a longitudinal movement rotating shaft, a longitudinal movement rod 15, a longitudinal movement adjusting part outer cylinder 11 and an end fixing block 14; the longitudinal moving rod 15 is provided with a longitudinal moving rack 29; a locking mechanism 25 is arranged on the inner side of the outer cylinder 11 of the longitudinal movement adjusting component; a longitudinal movement speed sensor is arranged on one side of the longitudinal movement rotating shaft and can measure the longitudinal movement speed; the longitudinal moving rotating shaft is connected with a longitudinal moving motor; the locking mechanism 25 is connected with the controller 16; the weight sensor 28 is connected with the controller 16; the level gauge 9 is connected with a controller 16; the traversing speed sensor is connected with the controller 16; the longitudinal movement speed sensor is connected with the controller 16; the transverse moving rotating shaft 8 is connected with a controller 16; the longitudinal moving rotating shaft is connected with a controller 16; the traversing motor is connected with the controller 16; the translation motor is connected to the controller 16.
In embodiment 2, all the features are the same as those in embodiment 1, and further, the longitudinal movement speed regulating mechanism comprises a longitudinal movement speed regulating mechanism I5 and a longitudinal movement speed regulating mechanism II 6; the longitudinal movement speed regulating mechanism I5 and the longitudinal movement speed regulating mechanism II 6 are arranged on the same straight line or side by side; the first longitudinal movement speed regulating mechanism 5 comprises a first longitudinal movement speed sensor, a first longitudinal movement rotating shaft, a first longitudinal movement regulating component outer cylinder 11, a first longitudinal movement rack 29 and an end fixing block 14, wherein the first longitudinal movement speed sensor is arranged on one side of the first longitudinal movement rotating shaft, the first longitudinal movement rotating shaft is connected with a first longitudinal movement motor, and the first longitudinal movement speed sensor can measure the first longitudinal movement speed and input the measured first longitudinal movement speed into the controller 16 to correct and control the rotating speed of the first longitudinal movement rotating shaft; the second longitudinal movement speed regulating mechanism 6 comprises a second longitudinal movement speed sensor, a second longitudinal movement rotating shaft 12, a second longitudinal movement adjusting component outer cylinder 11, a second longitudinal movement rack 29 and an end fixing block 14, the second longitudinal movement speed sensor is arranged on the side of the second longitudinal movement rotating shaft 12, the second longitudinal movement rotating shaft is connected with a second longitudinal movement motor, and the second longitudinal movement speed sensor can measure the second longitudinal movement speed and input the second longitudinal movement speed to the controller 16 to correct and control the rotating speed of the second longitudinal movement rotating shaft 12; the angle measured by the level 9 is α;
when 0< alpha <0.5 deg.,
when 0.5 ° < α <1 °,
V2＝0；
where V1 represents the target linear velocity of the first vertical movement velocity, V2 represents the target linear velocity of the second vertical movement velocity, P1 represents the rated power of the first vertical movement motor, P2 represents the rated power of the second vertical movement motor, G represents the gravity measured by the weight sensor 28, and α represents the angle measured by the level gauge 9. The first longitudinal movement speed regulating mechanism and the second longitudinal movement speed regulating mechanism can also be arranged side by side. The first shifting speed regulating mechanism and the second longitudinal shifting speed regulating mechanism are connected in a welding mode and are arranged in parallel in the longitudinal shifting direction.
Embodiment 3, all features are the same as embodiment 1, further, the beam piece fixing mechanism 3 is used for fixing the beam piece 1, the inner wall of the beam piece fixing mechanism 3 is provided with a buffer layer 7, the shape of the inner wall of the beam piece fixing mechanism 3 is matched with the shape of the upper part of the beam piece 1 to be erected, a weight sensor 28 is arranged in the beam piece fixing mechanism 3, and level gauges 9 are arranged on two sides of the beam piece fixing mechanism 3; the upper end of the beam piece fixing mechanism 3 is connected with a hydraulic cylinder; the hydraulic cylinder comprises a horizontal moving hydraulic cylinder and a vertical moving hydraulic cylinder; the horizontal moving hydraulic cylinder is used for shrinking and clamping the beam piece fixing mechanism 3 from two sides; the vertical moving hydraulic cylinder is used for moving the beam piece fixing mechanism 3 up and down.
Example 4, all features are the same as example 2, and further, when a >1,
v1 ═ 0, V2 ═ 0; the controller 16 sends a signal to control the locking mechanism 25 to lock inward.
Referring to FIG. 7, the calculated target linear velocity V Target (V1, V2, V3) as input signal to the comparison circuit, while the speed sensor measures V Measuring Also input into a comparison circuit, the difference value delta V between the two is input into an amplifier, and the speed V is obtained through a thyristor 0 The input motor obtains the corresponding rotating speed n, and it should be noted that the speeds of the three (the traverse speed regulating mechanism, the longitudinal speed regulating mechanism I and the longitudinal speed regulating mechanism II) are respectively controlled and calculated.
In addition, the erection method of the bridge girder erection machine comprises the following specific steps:
a, construction preparation: cleaning a region to be constructed, and erecting a construction isolation net; the bridge girder erection machine is checked to ensure that the requirements of safety specifications are met;
b, bridge girder erection machine preparation: laying sleepers, and erecting a middle support, a reverse support, a cross beam, a front support and a rear support to proper positions; arranging a speed regulating structure fixing piece at one side of a bridge girder erection machine, adjusting and reducing the distance between the lower clamping part 21 and the upper clamping part through the fixed speed regulating mechanism 30, and opening a locking mechanism on the speed regulating structure fixing piece when the distance between the lower clamping part 21 and the upper clamping part reaches a fixed position so as to fix the speed regulating structure fixing piece;
c, moving and transporting the beam piece 1: placing the beam piece 1 to be erected on a beam transporting trolley, and opening the beam transporting trolley to a proper position below the bridge girder erection machine;
d, longitudinally moving the beam piece 1: the upper end of the beam piece fixing mechanism 3 is connected with a hydraulic cylinder; the hydraulic cylinder comprises a horizontal moving hydraulic cylinder and a vertical moving hydraulic cylinder; the horizontal moving hydraulic cylinder is used for shrinking and clamping the beam piece fixing mechanism 3 from two sides; the vertical moving hydraulic cylinder is used for moving the beam piece fixing mechanism 3 up and down; the beam piece fixing mechanism 3 clamps the beam piece 1 to be erected and lifts the beam piece to a certain height, and the controller 16 receives signals of the level gauge 9 and the weight sensor 28 and outputs a longitudinal movement rotating speed signal; during the longitudinal movement, the longitudinal movement speed can be measured by the longitudinal movement speed sensor and input into the controller 16 to correct and control the rotating speed of the longitudinal movement rotating shaft;
e, transverse moving of the beam piece 1: after the longitudinal movement of the beam piece 1 is finished, the controller 16 receives a longitudinal movement finishing signal; the controller 16 outputs signals to control the locking mechanism 25 in the longitudinal movement speed regulating mechanism to be locked and start transverse movement, the controller 16 outputs a transverse movement rotating speed V3,
when 0< alpha <0.5 deg.,
when 0.5 degree<α<At the time of 1 degree, the steel wire is bent,
when 1 ° < α, V3 ═ 0;
during the traversing process, the traversing speed can be measured by a traversing speed sensor and input into the controller 16 to correct and control the rotating speed of the traversing rotating shaft 8;
f, placing the beam piece 1: after the beam piece 1 finishes the transverse movement, the controller 16 receives a transverse movement ending signal; the controller 16 outputs signals to control the locking mechanism 25 in the traverse speed regulating mechanism 4 to be locked; placing the beam piece 1 to be erected at a proper position through the beam piece fixing mechanism 3;
g, erecting the next beam piece 1, and repeating the steps A-F until the beam piece 1 is erected;
and after the H beam piece 1 is erected, removing the bridge erecting machine according to safe operation rules, and dismantling the construction isolation net.
Further, in the step D, the longitudinal shift rotation speed signals are V1 and V2; the angle measured by the level 9 is α;
when 0< alpha <0.5 deg.,
when 0.5 ° < α <1 °,
V2＝0；
where V1 represents the target linear velocity of the first vertical movement velocity, V2 represents the target linear velocity of the second vertical movement velocity, P1 represents the rated power of the first vertical movement motor, P2 represents the rated power of the second vertical movement motor, G represents the gravity measured by the weight sensor 28, and α represents the angle measured by the level gauge 9.
Furthermore, in step F, the controller 16 internally includes a PLC module, an intelligent PID regulator, a frequency converter, and a rotational speed transmitter;
the control logic of the controller 16 is that the PLC module receives a switching signal, a frequency converter signal, and a rotational speed transmitter signal; the intelligent PID regulator receives a set speed signal; the intelligent PID regulator receives a tachometer signal; the frequency converter receives a PLC module signal and an intelligent PID regulator signal; the motor receives a frequency converter signal; the speed transmitter receives a shaft speed signal.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. The utility model provides a bridge girder erection machine, puts the support in including, anti-support, crossbeam, leading support, rearmounted support, overhead traveling crane driving system, its characterized in that: the crown block power system comprises a speed regulating mechanism, a beam piece fixing mechanism, a locking mechanism and a control mechanism; the speed regulating mechanism comprises a speed regulating mechanism fixing piece, a transverse moving speed regulating mechanism and a longitudinal moving speed regulating mechanism; the control mechanism comprises a weight sensor, a level meter, a speed sensor and a controller; the speed regulating mechanism fixing piece is clamped on the cross beam, and the controller is arranged on the speed regulating mechanism fixing piece; the speed sensor comprises a transverse moving speed sensor and a longitudinal moving speed sensor; the transverse moving speed regulating mechanism comprises a transverse moving rotating shaft, a transverse moving rod, a transverse moving adjusting part outer cylinder and an end fixing block; the transverse moving rod is provided with a transverse moving rack; a locking mechanism is arranged on the inner side of the outer cylinder of the transverse moving adjusting component; a transverse moving speed sensor is arranged on one side of the transverse moving rotating shaft and is used for measuring the transverse moving speed so as to correct and control the rotating speed of the transverse moving rotating shaft; the transverse moving rotating shaft is connected with a transverse moving motor; the longitudinal movement speed regulating mechanism comprises a longitudinal movement rotating shaft, a longitudinal movement rod, a longitudinal movement adjusting part outer cylinder and an end fixing block; the longitudinal moving rod is provided with a longitudinal moving rack; a locking mechanism is arranged on the inner side of the outer cylinder of the longitudinal movement adjusting component; a longitudinal movement speed sensor is arranged on one side of the longitudinal movement rotating shaft and used for measuring the longitudinal movement speed; the longitudinal moving rotating shaft is connected with a longitudinal moving motor; the locking mechanism is connected with the controller; the weight sensor is connected with the controller; the level gauge is connected with the controller; the transverse moving speed sensor is connected with the controller; the longitudinal movement speed sensor is connected with the controller; the transverse moving rotating shaft is connected with the controller; the longitudinal moving rotating shaft is connected with a controller; the transverse moving motor is connected with the controller; the longitudinal movement motor is connected with the controller.
2. A bridge erecting machine as defined in claim 1, wherein: the longitudinal movement speed regulating mechanism comprises a longitudinal movement speed regulating mechanism I and a longitudinal movement speed regulating mechanism II; the first longitudinal movement speed regulating mechanism and the second longitudinal movement speed regulating mechanism are arranged in parallel; the first longitudinal movement speed regulating mechanism comprises a first longitudinal movement speed sensor, a first longitudinal movement rotating shaft, a first longitudinal movement regulating component outer cylinder, a first longitudinal movement rack and an end fixing block, wherein the first longitudinal movement speed sensor is arranged on one side of the first longitudinal movement rotating shaft, the first longitudinal movement rotating shaft is connected with a first longitudinal movement motor, and the first longitudinal movement speed sensor measures the first longitudinal movement speed and inputs the measured first longitudinal movement speed to the controller so as to correct and control the rotating speed of the first longitudinal movement rotating shaft; the second longitudinal movement speed regulating mechanism comprises a second longitudinal movement speed sensor, a second longitudinal movement rotating shaft, a second longitudinal movement regulating component outer cylinder, a second longitudinal movement rack and an end fixing block, wherein the second longitudinal movement speed sensor is arranged on two sides of the second longitudinal movement rotating shaft, the second longitudinal movement rotating shaft is connected with a second longitudinal movement motor, and the second longitudinal movement speed sensor measures the second longitudinal movement speed and inputs the second longitudinal movement speed to the controller so as to correct and control the rotating speed of the second longitudinal movement rotating shaft; the angle measured by the level is α;
when the alpha is more than 0 and less than 0.5 degrees,
when alpha is more than 0.5 degrees and less than 1 degree,
V2＝0；
wherein, V1 represents the target linear velocity of the first vertical movement speed, V2 represents the target linear velocity of the second vertical movement speed, P1 represents the rated power of the first vertical movement motor, P2 represents the rated power of the second vertical movement motor, G represents the gravity measured by the weight sensor, and α represents the angle measured by the level meter.
3. A bridge erecting machine according to claim 1 or 2, wherein: the beam piece fixing mechanism is used for fixing a beam piece, a buffer layer is arranged on the inner wall of the beam piece fixing mechanism, the shape of the inner wall of the beam piece fixing mechanism is matched with the shape of the upper part of the beam piece to be erected, a weight sensor is arranged in the beam piece fixing mechanism, and level gauges are arranged on two sides of the beam piece fixing mechanism; the upper end of the beam piece fixing mechanism is connected with a hydraulic cylinder; the hydraulic cylinders comprise a horizontal moving hydraulic cylinder and a vertical moving hydraulic cylinder; the horizontal moving hydraulic cylinder is used for shrinking and clamping the beam piece fixing mechanism from two sides; and the vertical moving hydraulic cylinder is used for moving the beam piece fixing mechanism up and down.
4. A bridge erecting machine as defined in claim 2, wherein: when in use
When the alpha is more than 1 degree,
v1 ═ 0, V2 ═ 0; the controller sends out a signal to control the locking mechanism to be locked inwards.
5. A bridge erecting machine according to claim 1, wherein: the upper end of the beam piece fixing mechanism is connected with a hydraulic cylinder; the beam piece fixing mechanism comprises a level meter clamping block, an air outlet, an outer fixing block, an inner fixing block and a clamping buffer piece; the air outlet is connected with a warm air blower; the fan heater is arranged at the lower part of the beam piece fixing mechanism, and the level instrument clamping blocks are arranged at two sides of the beam piece fixing mechanism to clamp the level instruments; the inner fixed block is fixedly connected with the transverse moving speed regulating mechanism; a level meter clamping block is fixedly arranged between the outer fixing block and the inner fixing block; the level meter clamping blocks are arranged on two horizontal sides parallel to the cross beam, and clamping buffering parts are arranged between the two level meter clamping blocks.
6. A bridge erecting machine as defined in claim 1, wherein: the speed regulating mechanism fixing part comprises a lower clamping part, a clamping buffer block and an upper clamping part; one sides of the lower clamping part and the upper clamping part are connected with a fixed speed regulating mechanism; the lower clamping part and the upper clamping part are fixed through a clamping and fixing component; clamping buffer blocks are further arranged inside the lower clamping part and the upper clamping part; the inner side of the longitudinal moving channel is provided with a clamping buffer block.
7. A bridge erecting machine according to claim 4, wherein: the locking mechanism is in wireless connection with the controller; the weight sensor is wirelessly connected with the controller; the level meter is wirelessly connected with the controller; the transverse moving speed sensor is in wireless connection with the controller; the longitudinal movement speed sensor is wirelessly connected with the controller; the transverse moving rotating shaft is in wireless connection with the controller; the longitudinal moving rotating shaft is wirelessly connected with the controller; the transverse moving motor is wirelessly connected with the controller; the longitudinal movement motor is wirelessly connected with the controller; the controller internally comprises a PLC module, an intelligent PID regulator, a frequency converter and a rotating speed transmitter; the PLC module receives a switching signal, a frequency converter signal and a rotating speed transmitter signal; the intelligent PID regulator receives a set speed signal; the intelligent PID regulator receives a tachometer signal; the frequency converter receives a PLC module signal and an intelligent PID regulator signal; the motor receives a frequency converter signal; the speed transmitter receives a shaft speed signal.
8. The erection method of the bridge girder erection machine is characterized by comprising the following steps: using a bridge girder erection machine according to claim 6; the method comprises the following specific steps:
a, construction preparation: cleaning a region to be constructed, and erecting a construction isolation net; the bridge girder erection machine is checked to ensure that the requirements of safety specifications are met;
b, bridge girder erection machine preparation: laying sleepers, and erecting a middle support, a reverse support, a cross beam, a front support and a rear support to proper positions; the speed regulating structure fixing piece is arranged on one side of the bridge girder erection machine, the distance between the lower clamping part and the upper clamping part is reduced through the regulation of the fixed speed regulating mechanism, and when the distance between the lower clamping part and the upper clamping part reaches a fixed position, the locking mechanism on the speed regulating structure fixing piece is opened to enable the speed regulating structure fixing piece to complete the fixing;
c, moving and transporting the beam piece: placing the beam piece to be erected on a beam transporting trolley, and opening the beam transporting trolley to a proper position below the bridge girder erection machine;
d, longitudinally moving the beam piece: the upper end of the beam piece fixing mechanism is connected with a hydraulic cylinder; the hydraulic cylinder comprises a horizontal moving hydraulic cylinder and a vertical moving hydraulic cylinder; the horizontal moving hydraulic cylinder is used for shrinking and clamping the beam piece fixing mechanism from two sides; the vertical moving hydraulic cylinder is used for moving the beam piece fixing mechanism up and down; the beam piece fixing mechanism clamps a beam piece to be erected and lifts the beam piece to a certain height, and the controller receives signals of the level gauge and the weight sensor and outputs a longitudinal movement rotating speed signal; in the longitudinal movement process, the longitudinal movement speed is measured by a longitudinal movement speed sensor and is input into a controller to correct and control the rotating speed of a longitudinal movement rotating shaft;
e, transverse moving of the beam pieces: after the longitudinal movement of the beam piece is finished, the controller receives a longitudinal movement finishing signal; the controller outputs signals to control the locking mechanism in the longitudinal movement speed regulating mechanism to be locked and start to transversely move, the controller outputs a transverse moving rotating speed V3,
when the alpha is more than 0 and less than 0.5 degrees,
when alpha is more than 0.5 degrees and less than 1 degree,
when 1 ° < α, V3 ═ 0;
in the transverse moving process, the transverse moving speed is measured by a transverse moving speed sensor and is input into a controller to correct and control the rotating speed of the transverse moving rotating shaft;
f, placing the beam pieces: after the beam piece is transversely moved, the controller receives a transverse moving end signal; the controller outputs signals to control the locking mechanism in the transverse movement speed regulating mechanism to be locked; placing the beam piece to be erected at a proper position through the beam piece fixing mechanism;
g, erecting the next beam piece, and repeating the steps A-F until the beam piece is erected;
and after the H beam pieces are erected, removing the bridge erecting machine according to safe operation rules, and dismantling the construction isolation net.
9. A method for erecting a bridge girder according to claim 8, wherein in step D, the longitudinal shift rotation speed signals are V1 and V2; the angle measured by the level is α;
when the alpha is more than 0 and less than 0.5 degrees,
when alpha is more than 0.5 degrees and less than 1 degree,
V2＝0；
wherein V1 represents the target linear velocity of the first vertical movement velocity, V2 represents the target linear velocity of the second vertical movement velocity, P1 represents the rated power of the first vertical movement motor, P2 represents the rated power of the second vertical movement motor, G represents the gravity measured by the weight sensor, and α represents the angle measured by the level gauge.
10. An erection method of a bridge girder erection machine according to claim 8, wherein in step F, the controller internally comprises a PLC module, an intelligent PID regulator, a frequency converter, a rotational speed transmitter; the control logic of the controller is that the PLC module receives a switch signal, a frequency converter signal and a rotating speed transmitter signal; the intelligent PID regulator receives a set speed signal; the intelligent PID regulator receives a tachometer signal; the frequency converter receives a PLC module signal and an intelligent PID regulator signal; the motor receives a frequency converter signal; the speed transmitter receives a shaft speed signal.
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