Lifting device of bridge erection machine

Abstract

Disclosed in the present invention is a lifting device of a bridge erection machine, comprising a lifting trolley, and further comprising: a lifting hoist, which is arranged above the lifting trolley, the lifting hoist comprising four load-bearing rods distributed in a square shape, a first pair of load-bearing rods arranged opposite to each other being provided with a first lifting assembly in the transverse direction, and a second pair of load-bearing rods arranged opposite to each other being provided with a pair of second lifting assemblies in the longitudinal direction; and a suspension hoist, of which the top surface is a suspension surface and the bottom surface is provided with hooks, the center of the suspension surface being connected to the first lifting assembly, and two lateral sides of the center of the suspension surface being connected to the pair of second lifting assemblies. In the present invention, the suspension hoist is uniformly stressed, and each load-bearing point lifts the suspension hoist at a uniform traction speed, thereby preventing the hooks from shaking, and improving the safety of lifting operations.

Description

Bridge machine hoisting device TECHNICAL FIELD

[0001] The present application relates to the technical field of bridge machine. More particularly, the present application relates to a bridge machine hoisting device. BACKGROUND

[0002] The bridge machine hoisting trolley is an important part of the bridge machine, and is a mechanical equipment for hoisting heavy objects. The hoisting trolley can move along the beam laterally and can move up and down vertically to perform hoisting operations through four walking wheels. The hoisting trolley is usually provided with a lifting hook lifting mechanism composed of a movable pulley, a fixed pulley and a steel wire rope. However, the platform where the lifting hook is located may shake due to different traction speeds or uneven forces, thereby reducing the safety of the hoisting operation. The present application is intended to solve the above problems.

[0003] SUMMARY

[0004] The present application provides a bridge machine hoisting device which can realize uniform force on the suspended lifting appliance, each force point lifting the suspended lifting appliance at a uniform traction speed, preventing the lifting hook from shaking, and improving the safety of the hoisting operation.

[0005] In order to achieve these objects and other advantages in accordance with the present application, a bridge machine hoisting device is provided, comprising a hoisting trolley, further comprising:

[0006] A hoisting lifting appliance is arranged above the hoisting trolley, the hoisting lifting appliance comprising four force rods arranged in a mouth shape, a first pair of force rods arranged opposite each other being provided with a first hoisting assembly in the lateral direction, and a second pair of force rods arranged opposite each other being provided with a pair of second hoisting assemblies in the longitudinal direction.

[0007] A suspended lifting appliance has a top surface as a suspension surface and a bottom surface provided with a lifting hook, the center of the suspension surface being connected to the first hoisting assembly, and the lateral sides of the center of the suspension surface being connected to a pair of second hoisting assemblies.

[0008] Preferably, the first hoisting assembly and the second hoisting assembly each comprise a pair of fixed rollers, an elevating roller and a steel wire rope, the roller shafts of the pair of fixed rollers being coaxially fixed to the corresponding force rods, the roller shaft of the elevating roller being mounted to the suspension surface through a bearing seat, the middle part of the steel wire rope being wound around the elevating roller and the two ends being wound around the pair of fixed rollers, and the pair of fixed rollers rotating at the same speed and in opposite directions.

[0009] Preferably, the first pair of force rods comprises the second force rod and the fourth force rod, each of which is provided with one fixed roller, the second pair of force rods comprises the first force rod and the third force rod, each of which is provided with two fixed rollers, the first force rod, the second force rod, the third force rod and the fourth force rod have the same rotating speed, the first force rod and the fourth force rod have the same rotating direction, and the second force rod and the third force rod have the same rotating direction.

[0010] Preferably, the second pair of force rods and the first pair of force rods are arranged in a high-low mode, the first force rod and the third force rod are provided with a worm part at one end and a first bevel gear at the other end, the second force rod and the fourth force rod are provided with a worm wheel part at one end and a driving gear at the other end, and one end of the first force rod rotates under the driving motor.

[0011] The first force rod and the second force rod are connected through the worm and worm wheel to realize power transmission, the second force rod and the third force rod are connected through the first transmission rod to realize power transmission, the first transmission rod is parallel to the second force rod, the first transmission rod and the second force rod are arranged in a high-low mode, the first transmission rod is coaxially provided with a second bevel gear and a driven gear, the driving gear of the second force rod is engaged with the driven gear of the first transmission rod, the second bevel gear of the first transmission rod is engaged with the first bevel gear of the third force rod, the third force rod and the fourth force rod are connected through the worm and worm wheel to realize power transmission, the fourth force rod and the first force rod are connected through the second transmission rod to realize power transmission, the second transmission rod is parallel to the fourth force rod, the second transmission rod and the fourth force rod are arranged in a high-low mode, the second transmission rod is coaxially provided with a second bevel gear and a driven gear, the driving gear of the fourth force rod is engaged with the driven gear of the second transmission rod, and the second bevel gear of the second transmission rod is engaged with the first bevel gear of the first force rod.

[0012] Preferably, the hoisting trolley is further provided with a pair of suspensions, the opposite sides of the pair of suspensions are provided with guide grooves, and the transverse two outer sides of the suspension lifting device are respectively provided with guide wheels which are slidingly arranged in the guide grooves.

[0013] Preferably, the wheel shaft of the guide wheel is an L-shaped shaft, the horizontal rod body of the L-shaped shaft is arranged in a longitudinal direction, the guide wheel is mounted on the horizontal rod body of the L-shaped shaft through a bearing, and the vertical rod body of the L-shaped shaft is arranged in a longitudinal direction and is provided with a tensioning rotating shaft which rotates under the driving of a tensioning motor.

[0014] The present application at least has the following beneficial effects:

[0015] Firstly, the present application sets the hoisting lifting device on the hoisting trolley, is used for installing the first hoisting assembly and the second hoisting assembly, thereby lifting or lowering the suspension lifting device, can realize the uniform stress of the suspension lifting device, each stress point lifts the suspension lifting device at the uniform traction speed, prevents the hook from shaking, and improves the safety of the hoisting operation.

[0016] Second, the lifting sling is arranged above the space of the lifting trolley, the suspension sling is arranged below the space of the lifting trolley, and the four force rods are symmetrically distributed, the first pair of force rods and the center of the suspension surface are jointly provided with the first lifting assembly, and the second pair of force rods and the center of the suspension surface are jointly provided with the second lifting assembly, so that the transverse center line of the suspension surface is provided with three stress points, the stress point at the center is pulled by the transversely distributed steel wire rope, and the two stress points on the two sides of the center are symmetrically pulled by the longitudinally distributed steel wire rope, and the first lifting assembly and the second lifting assembly can be selectively realized by a winding drum, a pulley, a sprocket and the like, which is not limited herein.

[0017] Third, the first lifting assembly and the second lifting assembly are sequentially wound on the first fixed roller, the lifting roller and the second fixed roller through the steel wire rope, and the fixed rollers are installed on the corresponding force rods, that is, the fixed rollers are rotated by driving the force rods to rotate, so that the pair of fixed rollers of the first lifting assembly rotates at the same speed and in the opposite direction, and the pair of fixed rollers of the second lifting assembly rotates at the same speed and in the opposite direction. The four force rods are respectively a first force rod, a second force rod, a third force rod and a fourth force rod, the first pair of force rods includes the second force rod and the fourth force rod, the second pair of force rods includes the first force rod and the third force rod, the driving motor is used to make the rotating speeds of the four force rods the same, the rotating directions of the first force rod and the fourth force rod the same, the rotating directions of the second force rod and the third force rod the same, and the rotating directions of the second force rod and the third force rod different, so that the first lifting assembly and the second lifting assembly synchronously and at the same speed lift the suspension sling.

[0018] Fourth, the second pair of force rods is arranged higher than the first pair of force rods, so that the four force rods can realize power transmission, the first force rod and the third force rod are arranged in the same shape, size and dimension but in opposite directions, the second force rod and the fourth force rod are arranged in the same shape, size and dimension but in opposite directions, the first force rod and the second force rod realize power transmission through the meshing of the worm and the worm gear, the second force rod and the third force rod realize power transmission through the meshing of the bevel gears, change the transmission direction, and realize the steering adjustment through the meshing of the gears, the third force rod and the fourth force rod realize power transmission through the meshing of the worm and the worm gear, and the fourth force rod and the first force rod realize power transmission through the meshing of the bevel gears, change the transmission direction, and realize the steering adjustment through the meshing of the gears, so that the first force rod rotates clockwise (counterclockwise), the second force rod rotates counterclockwise (clockwise), the third force rod rotates counterclockwise (clockwise), and the fourth force rod rotates clockwise (counterclockwise), so that the first lifting assembly and the second lifting assembly synchronously and at the same speed lift the suspension sling.

[0019] Fifth, the suspension is arranged on the lifting trolley, the lateral and longitudinal deviation of the suspension lifting appliance is limited, the guide groove is arranged, the straight lifting movement of the guide wheel is guided, the guide wheel is a non-powered wheel, and the guide wheel slides in the guide groove during the lifting of the suspension lifting appliance. The L-shaped shaft comprises a horizontal rod body and a vertical rod body, the vertical rod body is provided with a clamping rotating shaft in the longitudinal direction, the clamping rotating shaft is rotated by the clamping motor to make the guide wheel deviate in the lateral direction, the guide wheel is close to or away from the guide groove, the interval is adjusted, and the guide precision is further improved. The horizontal rod body is arranged in the longitudinal direction and is connected with the guide wheel bearing to realize the rotation of the guide wheel relative to the L-shaped shaft during the lifting of the suspension lifting appliance.

[0020] Other advantages, objects, and features of the present application will be apparent from the following detailed description, and will be understood by persons skilled in the art. BRIEF DESCRIPTION OF DRAWINGS

[0021] Fig. 1 is a structural schematic diagram of a technical scheme of the present application;

[0022] Fig. 2 is a structural schematic diagram of four force rods of a technical scheme of the present application;

[0023] Fig. 3 is a structural schematic diagram of an L-shaped shaft of a technical scheme of the present application. DETAILED DESCRIPTION

[0024] The present application will be further described in detail below with reference to the accompanying drawings, so that those skilled in the art can implement the present application according to the description.

[0025] It should be understood that the terms such as "have", "contain" and "include" used herein do not exclude the presence or addition of one or more other elements or combinations thereof.

[0026] It should be noted that the experimental methods in the following embodiments are all conventional methods unless otherwise specified, and the reagents and materials can be obtained from commercial channels unless otherwise specified. In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "arrangement" should be understood broadly, for example, they can be fixedly connected, arranged, or detachably connected, arranged, or integrally connected, arranged. For those skilled in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances. The orientations or positional relationships indicated by the terms "lateral", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and are not intended to indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0027] As shown in FIG. 1-2, the present application provides a bridge girder hoisting device, comprising a trolley 1, the trolley 1 is walking on the girder 3 of the bridge girder through four walking wheels 2, further comprising:

[0028] A hoisting spreader 4 is arranged above the trolley 1, the hoisting spreader 4 comprises four force-bearing rods in the shape of a square, a first pair of force-bearing rods is provided with a first hoisting assembly in the transverse direction, a second pair of force-bearing rods is provided with a second hoisting assembly in the longitudinal direction.

[0029] A suspension spreader 5 is provided with a suspension surface on the top and a hook on the bottom, the center of the suspension surface is connected with the first hoisting assembly, and the lateral sides of the center of the suspension surface are connected with the second hoisting assembly.

[0030] In the above technical solution, the hoisting spreader 4 is arranged on the trolley 1 to install the first hoisting assembly and the second hoisting assembly, so as to lift or lower the suspension spreader 5, which can realize uniform force on the suspension spreader 5, and each force point can lift the suspension spreader 5 at a uniform traction speed, preventing the hook from shaking and improving the safety of hoisting operation.

[0031] The hoisting spreader 4 is arranged in the upper space of the trolley 1, the suspension spreader 5 is arranged in the lower space of the trolley 1, and the four force-bearing rods are symmetrically distributed, the center of the first pair of force-bearing rods and the center of the suspension surface are jointly provided with the first hoisting assembly, and the lateral sides of the center of the second pair of force-bearing rods and the lateral sides of the center of the suspension surface are jointly provided with the second hoisting assembly, so that the transverse center line of the suspension surface is provided with three force points, the force point at the center is pulled by the transversely distributed steel wire rope 8, and the two force points on the two sides of the center are symmetrically pulled by the longitudinally distributed steel wire rope 8, and the first hoisting assembly and the second hoisting assembly can be realized by a winding drum, a pulley, a sprocket, etc., which is not limited here.

[0032] In another technical solution, the first hoisting assembly and the second hoisting assembly each comprise a pair of fixed rollers 6, a lifting roller 7, and a steel wire rope 8, the roller shafts of the pair of fixed rollers 6 are coaxially fixed on the corresponding force-bearing rods, the roller shaft of the lifting roller 7 is installed on the suspension surface through a bearing seat, the middle part of the steel wire rope 8 is wound on the lifting roller 7, and the two ends are wound on the pair of fixed rollers 6, and the pair of fixed rollers 6 rotate at the same speed and in opposite directions. The first hoisting assembly and the second hoisting assembly are sequentially wound on the first fixed roller 6, the lifting roller 7, and the second fixed roller 6 through the steel wire rope 8, and the fixed rollers 6 are installed on the corresponding force-bearing rods, that is, the fixed rollers 6 are rotated by driving the force-bearing rods to rotate, so as to realize the same speed and opposite rotation of the pair of fixed rollers 6 of the first hoisting assembly and the pair of fixed rollers 6 of the second hoisting assembly.

[0033] In another technical solution, the first pair of force rods includes the second force rod 10 and the fourth force rod 12, both of which are provided with one fixed roller 6, the second pair of force rods includes the first force rod 9 and the third force rod 11, both of which are provided with two fixed rollers 6, the first force rod 9, the second force rod 10, the third force rod 11 and the fourth force rod 12 have the same rotating speed, the first force rod 9 and the fourth force rod 12 have the same rotating direction, and the second force rod 10 and the third force rod 11 have the same rotating direction. The four force rods are the first force rod 9, the second force rod 10, the third force rod 11 and the fourth force rod 12, the first pair of force rods includes the second force rod 10 and the fourth force rod 12, the second pair of force rods includes the first force rod 9 and the third force rod 11, the rotating speed of the four force rods is the same through the driving motor, the rotating direction of the first force rod 9 and the fourth force rod 12 is the same, the rotating direction of the second force rod 10 and the third force rod 11 is the same, and the two are different, so that the first lifting assembly and the second lifting assembly synchronously and at the same speed lift the suspension spreader 5.

[0034] In another technical solution, the second pair of force rods and the first pair of force rods are arranged high and low, one end of the rod body of the first force rod 9 is provided with a worm part 901, and the other end is provided with a first bevel gear 902, one end of the rod body of the third force rod 11 is provided with a worm part 111, and the other end is provided with a first bevel gear 112, one end of the rod body of the second force rod 10 and the fourth force rod 12 is provided with a worm wheel part, and the other end is provided with a driving gear, and one end of the first force rod 9 rotates under the driving motor 903.

[0035] The first force bearing rod 9 and the second force bearing rod 10 realize power transmission through the meshing of the worm and the worm gear, the second force bearing rod 10 and the third force bearing rod 11 realize power transmission through the first transmission rod 13, the first transmission rod 13 is parallel to the second force bearing rod 10, and the first transmission rod 13 and the second force bearing rod 10 are arranged in height, the first transmission rod 13 is coaxially provided with the second bevel gear 131 and the driven gear 132, the driving gear of the second force bearing rod 10 (since the second force bearing rod 10 is located below the first transmission rod 13 due to the coincidence of the top view, which is not shown in the figure) is meshed with the driven gear 132 of the first transmission rod 13, the second bevel gear 131 of the first transmission rod 13 is meshed with the first bevel gear 112 of the third force bearing rod 11, the third force bearing rod 11 and the fourth force bearing rod 12 realize power transmission through the meshing of the worm and the worm gear, the fourth force bearing rod 12 and the first force bearing rod 9 realize power transmission through the second transmission rod 14, the second transmission rod 14 is parallel to the fourth force bearing rod 12, and the second transmission rod 14 and the fourth force bearing rod 12 are arranged in height, the second transmission rod 14 is coaxially provided with the second bevel gear 141 and the driven gear 142, the driving gear of the fourth force bearing rod 12 (since the fourth force bearing rod 12 is located below the second transmission rod 14 due to the coincidence of the top view, which is not shown in the figure) is meshed with the driven gear 142 of the second transmission rod 14, and the second bevel gear 141 of the second transmission rod 14 is meshed with the first bevel gear 902 of the first force bearing rod 9.

[0036] In the above technical scheme, the second pair of force bearing rods is arranged higher than the first pair of force bearing rods, so that the four force bearing rods can realize power transmission, the first force bearing rod 9 and the third force bearing rod 11 are arranged in reverse and have consistent shapes, specifications and sizes, the second force bearing rod 10 and the fourth force bearing rod 12 are arranged in reverse and have consistent shapes, specifications and sizes, the first force bearing rod 9 and the second force bearing rod 10 realize power transmission through the meshing of the worm and the worm gear, the second force bearing rod 10 and the third force bearing rod 11 realize power transmission through the meshing of the bevel gears, change the transmission direction, and realize steering adjustment through the meshing of the gears, the third force bearing rod 11 and the fourth force bearing rod 12 realize power transmission through the meshing of the worm and the worm gear, and the fourth force bearing rod 12 and the first force bearing rod 9 realize power transmission through the meshing of the bevel gears, change the transmission direction, and realize steering adjustment through the meshing of the gears, so that the first force bearing rod 9 rotates clockwise (counterclockwise), the second force bearing rod 10 rotates counterclockwise (clockwise), the third force bearing rod 11 rotates counterclockwise (clockwise), and the fourth force bearing rod 12 rotates clockwise (counterclockwise), thereby realizing synchronous and same-speed lifting of the first hoisting assembly and the second hoisting assembly.

[0037] As shown in Fig. 3, in another technical solution, the trolley 1 is further provided with a pair of suspensions 15, the opposite sides of the pair of suspensions 15 are provided with guide grooves, the transversely outer sides of the suspension hoist 5 are respectively provided with guide wheels 16, and the guide wheels 16 are slidingly arranged in the guide grooves. The suspensions 15 are arranged on the trolley 1 to limit the transverse and longitudinal deviation of the suspension hoist 5, the guide grooves are arranged to guide the linear lifting movement of the guide wheels 16, the guide wheels 16 are unpowered wheels, and the guide wheels 16 slide in the guide grooves during the lifting of the suspension hoist 5.

[0038] In another technical solution, the wheel shaft of the guide wheel 16 is an L-shaped shaft 17, the horizontal rod of the L-shaped shaft 17 is arranged in the longitudinal direction, the guide wheel 16 is mounted on the horizontal rod of the L-shaped shaft 17 through a bearing, the vertical rod of the L-shaped shaft 17 is arranged in the longitudinal direction and is provided with a jacking shaft 18, and the jacking shaft 18 rotates under the driving of a jacking motor 19. The L-shaped shaft 17 includes a horizontal rod and a vertical rod, the vertical rod is arranged in the longitudinal direction and is provided with the jacking shaft 18, the jacking shaft 18 is rotated by the jacking motor 19 to make the guide wheel 16 deviate in the transverse direction, approach or move away from the guide groove, adjust the distance, and further improve the guiding accuracy, the horizontal rod is arranged in the longitudinal direction and is connected with the bearing of the guide wheel 16 to realize the rotation of the guide wheel 16 relative to the L-shaped shaft 17 during the lifting of the suspension hoist 5.

[0039] The number of devices and the scale of processing described herein are used to simplify the description of the present application. The application, modification and variation of the present application are obvious to those skilled in the art. Although the embodiments of the present application have been disclosed as above, they are not limited to the application and implementation listed in the specification and embodiments, and can be fully applied to various fields suitable for the present application, and additional modifications can be easily realized by those skilled in the art. Therefore, the present application is not limited to specific details and the figures shown and described herein, without departing from the general concept defined by the claims and the equivalent scope.

Claims

1. Bridge-launching crane hoisting device, comprising a hoist trolley, characterized in that Also include: The lifting trolley is provided with a lifting hoist above it, which includes four force rods in a square shape. The first pair of force rods is provided with a first lifting assembly in the transverse direction, and the second pair of force rods is provided with a second lifting assembly in the longitudinal direction. The top surface of the suspension hoist is a suspension surface, and the bottom surface is provided with a lifting hook. The center of the suspension surface is connected to the first lifting assembly, and the lateral sides of the center of the suspension surface are connected to the second lifting assembly.

2. The bridging machine hoist of claim 1, wherein, The first lifting assembly and the second lifting assembly each include a pair of fixed rollers, a lifting roller, and a steel wire rope. The roller shafts of the pair of fixed rollers are coaxially fixed to the corresponding force rods. The roller shaft of the lifting roller is installed on the suspension surface through a bearing seat. The middle part of the steel wire rope is wound around the lifting roller, and the two ends are wound around the pair of fixed rollers. The pair of fixed rollers rotate at the same speed and in opposite directions.

3. The bridging machine hoist of claim 2, wherein, The first pair of force rods includes a second force rod and a fourth force rod, each provided with a fixed roller. The second pair of force rods includes a first force rod and a third force rod, each provided with two fixed rollers. The first force rod, the second force rod, the third force rod, and the fourth force rod have the same rotational speed. The first force rod and the fourth force rod have the same rotational direction, and the second force rod and the third force rod have the same rotational direction.

4. The bridging machine hoist of claim 3, wherein, The second pair of force rods and the first pair of force rods are arranged in a high-low manner. The first force rod and the third force rod are provided with a worm part at one end and a first bevel gear at the other end. The second force rod and the fourth force rod are provided with a worm wheel part at one end and a driving gear at the other end. One end of the first force rod rotates under the driving of a driving motor. The first force rod and the second force rod are connected through a worm and worm gear to realize power transmission. The second force rod and the third force rod are connected through a first transmission rod to realize power transmission. The first transmission rod is parallel to the second force rod, and the first transmission rod and the second force rod are arranged in a high-low manner. The first transmission rod is coaxially provided with a second bevel gear and a driven gear. The driving gear of the second force rod is engaged with the driven gear of the first transmission rod. The second bevel gear of the first transmission rod is engaged with the first bevel gear of the third force rod. The third force rod and the fourth force rod are connected through a worm and worm gear to realize power transmission. The fourth force rod and the first force rod are connected through a second transmission rod to realize power transmission. The second transmission rod is parallel to the fourth force rod, and the second transmission rod and the fourth force rod are arranged in a high-low manner. The second transmission rod is coaxially provided with a second bevel gear and a driven gear. The driving gear of the fourth force rod is engaged with the driven gear of the second transmission rod. The second bevel gear of the second transmission rod is engaged with the first bevel gear of the first force rod.

5. The bridging machine hoist of claim 1, wherein, The lifting trolley is also provided with a pair of suspensions. The opposite sides of the pair of suspensions are provided with guide grooves. The lateral outer sides of the suspension hoist are respectively provided with guide wheels, which are slidingly arranged in the guide grooves.

6. The bridging machine hoist of claim 5, wherein, The wheel shaft of the guide wheel is an L-shaped shaft. The horizontal rod body of the L-shaped shaft is arranged in the longitudinal direction. The guide wheel is installed on the horizontal rod body of the L-shaped shaft through a bearing. The vertical rod body of the L-shaped shaft is provided with a tensioning shaft in the longitudinal direction. The tensioning shaft rotates under the driving of a tensioning motor.

Images