CN214359729U - Lifting point balance lifting appliance system suitable for lifting of variable-section beam - Google Patents
Lifting point balance lifting appliance system suitable for lifting of variable-section beam Download PDFInfo
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- CN214359729U CN214359729U CN202120060303.8U CN202120060303U CN214359729U CN 214359729 U CN214359729 U CN 214359729U CN 202120060303 U CN202120060303 U CN 202120060303U CN 214359729 U CN214359729 U CN 214359729U
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Abstract
A lifting point balance lifting appliance system suitable for lifting of a variable-section beam relates to the field of lifting appliances. The lifting point balance lifting appliance system suitable for lifting the variable-section beam comprises a main beam, pulley frames with hinged bottoms and the main beam, and pulley blocks arranged at the tops of the pulley frames, pull plates are hinged to two ends of the main beam respectively, carrying pole beams are hinged to the bottoms of the pull plates, connecting shafts used for fixing lifting lugs are connected to two ends of the carrying pole beams through a pair of connecting plates respectively, the distance between the joint of the pulley frames and the main beam and one end of the main beam is larger than the distance between the joint of the pulley frames and the other end of the main beam, lifting appliance oil cylinders are hinged between the main beam and the pulley frames, and adjusting oil cylinders are hinged between the main beam and the pull plates. The lifting point balance lifting appliance system suitable for lifting of the variable cross-section beam can solve the problems of inclination, difficulty in alignment, low precision, large impact and poor stability of the existing lifting construction.
Description
Technical Field
The application relates to the field of lifting appliances, in particular to a lifting point balance lifting appliance system suitable for lifting a variable-section beam.
Background
A bridge deck crane is a main construction device for carrying out bridge hoisting splicing operation at present. The beam section that lifts by crane has the equal cross-section and divides with the variable cross-section, and along with the view bridge constantly enlarges at municipal steel box girder's the proportion, variable cross-section girder steel is more and more common, becomes the focus of present stage to the research of variable cross-section girder steel hoist and mount construction equipment.
The existing bridge deck crane used for hoisting the variable cross-section steel box girder has the following defects: the lifting steel beam is inclined and difficult to align, because the weights of the left side and the right side of a lifting point are different when the variable-section steel beam is lifted, when an ordinary lifting appliance is lifted, the two sides of the lifting point of the steel beam cannot reach balance in the horizontal position, and at the moment, the carrying pole beam of the lifting appliance can rotate and incline by taking the lifting point as the center until the steel beam reaches static balance. The steel beam after the slope, later stage is difficult to the leveling, and the counterpoint is difficult, need with the help of other lifting devices, greatly reduced efficiency of construction and construction quality.
SUMMERY OF THE UTILITY MODEL
An object of this application provides a hoisting point balance hoist system suitable for variable cross-section roof beam lifts by crane, and it can solve present hoist and mount construction slope, counterpoint difficulty, the precision is low, strike big, the poor problem of stability.
The embodiment of the application is realized as follows:
the embodiment of the application provides a lifting point balance hoist system suitable for variable cross-section roof beam lifts by crane, it includes the girder, bottom and girder articulated pulley yoke and locate the assembly pulley at pulley yoke top, the both ends of girder articulate respectively has the arm-tie, the bottom of arm-tie articulates there is the carrying pole roof beam, the both ends of carrying pole roof beam are connected with the connecting axle that is used for fixed lug through a pair of connecting plate respectively, the distance of the junction of pulley yoke and girder one end is greater than the distance with the girder other end, it has the hoist hydro-cylinder to articulate between girder and the pulley yoke, it has the adjusting cylinder to articulate between girder and the arm-tie.
In some alternative embodiments, the main beam and the pulley yoke are hinged by a first shaft, the pulling plate and the main beam are hinged by a second shaft, the carrying pole beam and the pulling plate are hinged by a third shaft, the axes of the first shaft, the second shaft and the connecting shaft are arranged in parallel, and the axes of the third shaft and the second shaft are arranged vertically.
In some optional embodiments, the hydraulic control system further comprises a full-automatic load-sensitive post-compensation hydraulic control system, the full-automatic load-sensitive post-compensation hydraulic control system comprises an oil tank and a load-sensitive variable pump communicated with the oil tank, the load-sensitive variable pump is respectively communicated with oil inlets of two post-compensation electromagnetic proportional directional valves through oil passages, and two pairs of oil outlets of the two post-compensation electromagnetic proportional directional valves are respectively communicated with rod cavities and rodless cavities of the lifting appliance oil cylinder and the adjusting oil cylinder.
In some optional embodiments, an oil inlet filter is arranged on an oil path between the oil tank and the load-sensitive variable pump, and a pressure oil filter is arranged on an oil path between the load-sensitive variable pump and the post-compensation electromagnetic proportional directional valve.
In some optional embodiments, the lifting appliance further comprises a controller, a first angle sensor used for detecting the inclination angle is arranged on the main beam, the first angle sensor collects signals and outputs the signals to a comparator in the controller, the comparator feeds an angle difference value back to the controller, and the controller outputs current signals to control the flow output of an oil way of a post-compensation electromagnetic proportional directional valve corresponding to the lifting appliance oil cylinder.
In some optional embodiments, a second angle sensor for detecting the inclination angle is arranged on the pulling plate, the second angle sensor collects signals and outputs the signals to a comparator, the comparator feeds the angle difference value back to the controller, and the controller outputs current signals to control the flow output of the oil way controlled by the post-compensation electromagnetic proportional directional valve corresponding to the adjusting oil cylinder.
In some optional embodiments, a full-pressure compensation throttle valve is respectively arranged on an oil path between the load-sensitive variable displacement pump and the oil inlet of the post-compensation electromagnetic proportional directional valve.
The beneficial effect of this application is: the lifting point balance lifting appliance system suitable for lifting a variable-section beam comprises a main beam, pulley frames hinged to the main beam and pulley blocks arranged at the tops of the pulley frames, pull plates are hinged to the two ends of the main beam respectively, carrying pole beams are hinged to the bottoms of the pull plates, connecting shafts used for fixing lifting lugs are connected to the two ends of the carrying pole beams respectively through a pair of connecting plates, the distance between the joint of the pulley frames and the main beam and one end of the main beam is larger than the distance between the joint of the pulley frames and the other end of the main beam, lifting appliance oil cylinders are hinged between the main beam and the pulley frames, and adjusting oil cylinders are hinged between the main beam and the pull plates. The lifting point balance lifting appliance system suitable for lifting of the variable cross-section beam can solve the problems of inclination, difficulty in alignment, low precision, large impact and poor stability of the existing lifting construction.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.
Fig. 1 is a schematic structural diagram of a lifting point balance spreader system suitable for lifting a variable cross-section beam provided in embodiment 1 of the present application;
FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;
fig. 3 is a schematic structural diagram of a connection between a full-automatic load-sensitive post-compensation hydraulic control system and a main beam and a pulling plate in a lifting point balance spreader system suitable for variable cross-section beam lifting according to embodiment 2 of the present application.
In the figure: 100. a main beam; 101. a first shaft; 102. a second shaft; 103. a third axis; 110. a pulley yoke; 120. a pulley block; 121. a pulley shaft; 122. a pulley; 130. pulling a plate; 131. a shoulder pole beam; 140. a connecting plate; 150. a connecting shaft; 160. a hoist cylinder; 170. adjusting the oil cylinder; 200. an oil tank; 210. a load-sensitive variable displacement pump; 220. a post-compensation electromagnetic proportional directional valve; 230. an oil inlet filter; 240. a pressure oil filter; 250. a full pressure compensation throttle valve; 260. a first angle sensor; 270. a second angle sensor; 280. a comparator; 290. and a controller.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the application usually place when in use, and are used only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the devices or elements being referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present application, it is further noted that, unless expressly stated or limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; 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 meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The features and performance of the lifting point balance spreader system suitable for variable cross-section beam lifting according to the present application will be described in further detail with reference to the following embodiments.
Example 1
As shown in fig. 1 and 2, an embodiment of the present application provides a lifting point balance spreader system suitable for lifting a variable cross-section beam, which includes a main beam 100, a pulley frame 110 whose bottom is hinged to the main beam 100, and a pulley block 120 disposed on the top of the pulley frame 110, where the pulley block 120 includes a pulley shaft 121 whose two ends are respectively rotatably connected to the pulley frame 110, and four pulleys 122 sleeved on the pulley shaft 121, two ends of the main beam 100 are respectively hinged to a pulling plate 130, the bottom of the pulling plate 130 is hinged to a carrying pole beam 131, two ends of the carrying pole beam 131 are respectively connected to a connecting shaft 150 for fixing a lifting lug through a pair of connecting plates 140, a distance between a joint of the pulley frame 110 and the main beam 100 and one end of the main beam 100 is greater than a distance between the other end of the main beam 100, a spreader cylinder 160 is hinged between the main beam 100 and the pulley frame 110, an adjusting cylinder 170 is hinged between the main beam 100 and the pulling plate 130, the main beam 100 and the pulley frame 110 are hinged through a first shaft 101, the pulling plate 130 and the main beam 100 are hinged through the second shaft 102, the carrying pole beam 131 and the pulling plate 130 are hinged through the third shaft 103, the axes of the first shaft 101, the second shaft 102 and the connecting shaft 150 are arranged in parallel, and the axes of the third shaft 103 and the second shaft 102 are arranged vertically.
When the lifting point balance lifting appliance system suitable for lifting a variable cross-section beam provided by the embodiment is used, a steel cable of a winch is sleeved on four pulleys 122 on a pulley block 120, lifting lugs on two sides of the top of a steel beam to be lifted are hung on two connecting shafts 150, the connecting shafts 150 are fixed by a pair of connecting plates 140 respectively arranged at two ends of a shoulder pole beam 131, the winch is controlled to start the lifting pulley block 120 and the main beam 100 connected with the same, so that the two shoulder pole beams 131 are driven to lift by the pulling plates 130 hinged at two ends when the main beam 100 is lifted, the connecting plates 140 fixed at two ends of the two shoulder pole beams 131 and the connecting shafts 150 are driven to drive the steel beam to lift, when the steel beam is in an inclined state, the lifting appliance oil cylinder 160 is controlled to stretch and drive the main beam 100 and the pulley frame 110 to rotate relatively, the main beam 100 is driven to adjust the angle, and the adjusting oil cylinder 170 can be controlled to stretch and drive the main beam 100 and the pulling plates 130 to rotate relatively, the pulling plate 130 is driven to adjust the angle, so that the angles of the main beam 100 and the pulling plate 130 can be adjusted quickly and efficiently under the action of the double pipes, the hung steel beam can reach a preset position and state, and alignment and installation are facilitated.
Example 2
As shown in fig. 3, an embodiment of the present application provides a lifting point balance spreader system suitable for variable cross-section beam lifting, which has substantially the same structure as the lifting point balance spreader system suitable for variable cross-section beam lifting provided in embodiment 1, and the difference is that the system further includes a full-automatic load-sensitive post-compensation hydraulic control system, the hydraulic control system includes an oil tank 200 and a load-sensitive variable pump 210 communicated with the oil tank 200, the load-sensitive variable pump 210 is configured to output partial pressure oil inside the oil tank 200 to oil inlets of two post-compensation electromagnetic proportional directional valves 220, two pairs of oil outlets of the two post-compensation electromagnetic proportional directional valves 220 are respectively communicated with a rod cavity and a rodless cavity of the spreader cylinder 160 and the adjusting cylinder 170, oil return ports of the two post-compensation electromagnetic proportional directional valves 220 are respectively communicated with the oil tank 200 through an oil path, an oil inlet filter 230 is disposed on an oil path between the oil tank 200 and the load-sensitive variable pump 210, a pressure oil filter 240 is arranged on an oil path between the load sensitive variable displacement pump 210 and the rear compensation electromagnetic proportional directional valve 220, and a full pressure compensation throttle valve 250 is respectively arranged between the pressure oil filter 240 and an oil inlet of the rear compensation electromagnetic proportional directional valve 220; the main beam 100 is provided with a first angle sensor 260 for detecting an inclination angle, the pulling plate 130 is provided with a second angle sensor 270 for detecting an inclination angle, the main beam further comprises a controller 290, the first angle sensor 260 and the second angle sensor 270 collect signals and output the signals to a comparator 280 in the controller 290, the comparator 280 feeds an angle difference value back to the controller 290, and the controller 290 outputs current signals to control the rear compensation electromagnetic proportional directional valve 220 corresponding to the hanger oil cylinder 160 and the adjusting oil cylinder 170 to control the flow output of an oil path.
The lifting point balance lifting appliance system suitable for lifting a variable cross-section beam provided by this embodiment respectively conveys hydraulic oil in an oil tank 200 to oil inlets of two post-compensation electromagnetic proportional directional valves 220 through a set load-sensitive variable pump 210, and the hydraulic oil is conveyed from oil outlets of the two post-compensation electromagnetic proportional directional valves 220 to rod cavities and rodless cavities of a lifting appliance oil cylinder 160 and an adjusting oil cylinder 170 to control the extension and retraction of the lifting appliance oil cylinder 160 and the adjusting oil cylinder 170 so as to adjust the angles of a main beam 100 and a pulling plate 130, so that a lifted steel beam reaches a preset position and state, wherein a first angle sensor 260 and a second angle sensor 270 collect signals and output the signals to a comparator 280 in a controller 290, the comparator 280 feeds back an angle difference value to the controller 290, the controller 290 outputs current signals to control the flow output of oil paths by the post-compensation electromagnetic proportional directional valves 220 corresponding to the lifting appliance oil cylinder 160 and the adjusting oil cylinder 170, the angles of the main beam 100 and the pulling plate 130 are controlled in real time, and the angle of the steel beam hung on the main beam 100 and the pulling plate 130 is adjusted to reach the preset angle quickly and efficiently.
In addition, an oil inlet filter 230 is arranged on an oil path between the oil tank 200 and the load sensitive variable displacement pump 210, and a pressure oil filter 240 is arranged on an oil path between the load sensitive variable displacement pump 210 and the rear compensation electromagnetic proportional directional valve 220, so that the influence of impurities in the oil path on operation can be avoided. Full-pressure compensation throttle valves 250 are respectively arranged between oil inlets of the load sensitive variable pump 210 and the rear compensation electromagnetic proportional directional valve 220, and the flow of hydraulic oil input into rod cavities and rodless cavities of the hanger oil cylinder 160 and the adjusting oil cylinder 170 can be equivalently adjusted by controlling the flow of the full-pressure compensation throttle valves 250, so that the extension and retraction degrees of the hanger oil cylinder 160 and the adjusting oil cylinder 170 are controlled.
The embodiments described above are some, but not all embodiments of the present application. The detailed description of the embodiments of the present application is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Claims (7)
1. The utility model provides a lifting point balance hoist system suitable for variable cross-section roof beam lifts by crane which characterized in that, its include girder, bottom and girder articulated pulley yoke and locate the assembly pulley at pulley yoke top, the both ends of girder articulate respectively has the arm-tie, the bottom of arm-tie articulates there is the carrying pole roof beam, the both ends of carrying pole roof beam are connected with the connecting axle that is used for fixed lug through a pair of connecting plate respectively, the pulley yoke with the junction of girder with the distance of girder one end with the distance of the girder other end is greater than with the distance of the girder other end, the girder with it has the hoist hydro-cylinder to articulate between the pulley yoke, the girder with it has the adjusting cylinder to articulate between the arm-tie.
2. The system of lifting point balance spreaders suitable for variable cross section beam lifting as claimed in claim 1 wherein said main beam and said sheave frame are hinged by a first shaft, said spreader plate and said main beam are hinged by a second shaft, said spreader beam and said spreader plate are hinged by a third shaft, the axes of said first shaft, said second shaft and said connecting shaft are arranged parallel to each other, and the axis of said third shaft and said second shaft are arranged perpendicular.
3. The lifting point balance lifting appliance system suitable for lifting of the variable cross-section beam according to claim 1, further comprising a full-automatic load-sensitive post-compensation hydraulic control system, wherein the full-automatic load-sensitive post-compensation hydraulic control system comprises an oil tank and a load-sensitive variable pump communicated with the oil tank, the load-sensitive variable pump is respectively communicated with oil inlets of two post-compensation electromagnetic proportional directional valves through oil passages, and two pairs of oil outlets of the two post-compensation electromagnetic proportional directional valves are respectively communicated with rod cavities and rodless cavities of the lifting appliance oil cylinder and the adjusting oil cylinder.
4. The lifting point balance lifting appliance system suitable for lifting of the variable cross-section beam according to claim 3, wherein an oil inlet filter is arranged on an oil path between the oil tank and the load sensitive variable pump, and a pressure oil filter is arranged on an oil path between the load sensitive variable pump and the post-compensation electromagnetic proportional reversing valve.
5. The lifting point balance lifting appliance system suitable for lifting of the variable cross-section beam according to claim 3, further comprising a controller, wherein a first angle sensor for detecting an inclination angle is arranged on the main beam, the first angle sensor collects signals and outputs the signals to a comparator in the controller, the comparator feeds an angle difference value back to the controller, and the controller outputs current signals to control the flow output of the oil path controlled by the post-compensation electromagnetic proportional directional valve corresponding to the lifting appliance oil cylinder.
6. The lifting point balance lifting tool system suitable for lifting of the variable cross-section beam according to claim 5, wherein a second angle sensor for detecting an inclination angle is arranged on the pulling plate, the second angle sensor collects signals and outputs the signals to the comparator, the comparator feeds an angle difference value back to the controller, and the controller outputs current signals to control the flow output of the oil path controlled by the post-compensation electromagnetic proportional directional valve corresponding to the adjusting oil cylinder.
7. The lifting point balance lifting appliance system suitable for lifting of the variable cross-section beam according to claim 3, wherein a full-pressure compensation throttle valve is respectively arranged on an oil path between the load-sensitive variable pump and the oil inlet of the post-compensation electromagnetic proportional directional valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120060303.8U CN214359729U (en) | 2021-01-11 | 2021-01-11 | Lifting point balance lifting appliance system suitable for lifting of variable-section beam |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120060303.8U CN214359729U (en) | 2021-01-11 | 2021-01-11 | Lifting point balance lifting appliance system suitable for lifting of variable-section beam |
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| CN214359729U true CN214359729U (en) | 2021-10-08 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114013904A (en) * | 2021-11-19 | 2022-02-08 | 浙江和力电力设施有限公司 | Shoulder pole and using method thereof |
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2021
- 2021-01-11 CN CN202120060303.8U patent/CN214359729U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114013904A (en) * | 2021-11-19 | 2022-02-08 | 浙江和力电力设施有限公司 | Shoulder pole and using method thereof |
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