Propelling mechanism on beam of gantry crane
Technical Field
The utility model relates to the technical field of portal cranes, in particular to an on-beam propulsion mechanism of a portal crane.
Background
The portal crane is a deformation of a bridge crane, also called a portal crane, and is mainly used for loading and unloading operations of outdoor goods yards, stock yards and bulk cargos, and the portal crane has the characteristics of high field utilization rate, large operation range, wide application range, strong universality and the like, is widely used in port goods yards, and is often applied to the transportation and hoisting processes of large logistics.
In order to improve the flexibility of lifting large logistics, the conventional gantry crane for large logistics can finish lifting and transferring requirements on the large logistics in a limited space, and needs to be additionally provided with a propelling mechanism on a gantry crane beam, but the conventional gantry crane cannot automatically lock the propelling mechanism when goods are overloaded, and completely depends on the operation of operators, so that illegal operation and overload lifting exist.
Based on the above, the beam-mounted propulsion mechanism of the portal crane can overcome the defects of the prior device.
Disclosure of utility model
The utility model aims to provide an on-beam propulsion mechanism of a gantry crane, which aims to solve the problems in the background technology.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
The utility model provides a propelling mechanism on roof beam of gantry crane, includes propelling mechanism, propelling mechanism sets up on the girder, the girder both ends are equipped with the support frame, the propelling mechanism lower extreme is equipped with hangs heavy board, be equipped with overweight locking assembly on the propelling mechanism.
Based on the technical scheme, the utility model also provides the following optional technical schemes:
In an alternative scheme, the main beam comprises a beam body, the beam body is of a cuboid structure with a slot in the middle, two first sliding rails are symmetrically arranged at the top end of the beam body, limiting plates are arranged at two ends of each first sliding rail, two first sliding grooves are symmetrically arranged on the inner side wall of the beam body, and two second sliding grooves are symmetrically arranged on the outer side wall of the beam body.
In an alternative scheme, the bottom surface of the first chute is provided with a second sliding rail, and the top surface and the bottom surface of the second chute are both provided with third sliding rails.
In an alternative scheme, the propelling mechanism comprises a mounting seat, a roller group and a driving assembly piece, wherein the mounting seat is arranged above the beam body, L-shaped mounting plates are arranged on two sides of the mounting seat, a connecting seat is arranged at the lower end of the mounting seat, and the connecting seat is arranged in a groove in the middle of the beam body.
In an alternative scheme, the roller set comprises a first roller, a second roller and a third roller, wherein the first roller is arranged between the L-shaped mounting plate and the mounting seat, the first roller is rotationally connected with the L-shaped mounting plate and the mounting seat, the second roller is rotationally connected to the L-shaped mounting plate, and the third roller is rotationally connected to the connecting seat.
In an alternative scheme, the lower end of the first roller is in friction contact with the first sliding rail, the second roller is arranged in the second sliding groove, the upper and lower parts of the second roller are in friction contact with the third sliding rail, the third roller is arranged in the first sliding groove, and the lower end of the third roller is in friction contact with the second sliding rail.
In an alternative scheme, the driving assembly comprises a motor, the motor is fixed on the outer side of the L-shaped mounting plate, the output end of the motor is connected with a first roller, a first gear is arranged on one side of the first roller, adjacent two first gears are provided with second gears, and the second gears are in meshed connection with the first gears.
In an alternative scheme, the overweight locking assembly comprises a connecting rod, a movable plate and a spring, wherein the connecting rod is connected to the upper end of the hanging plate, the connecting rod penetrates through the mounting seat, the connecting seat and the movable plate to be connected, the movable plate is arranged above the mounting seat, connecting plates are arranged on two sides of the movable plate, friction plates are arranged at the bottom ends of the connecting plates and are positioned above the first idler wheels, and the spring is arranged between the mounting seat and the movable plate.
Compared with the prior art, the utility model has the following beneficial effects:
According to the utility model, the propulsion mechanism with the overweight locking assembly is arranged, and when the goods are overloaded, the overweight locking assembly can lock the idler wheels, so that the propulsion mechanism cannot move, and the dangerous behavior of overload hoisting caused by illegal operation of operators is avoided.
Drawings
FIG. 1 is a schematic view of the structure of one side of the present utility model.
Fig. 2 is a schematic structural diagram of the other side of the present utility model.
Fig. 3 is a schematic structural view of one side of the girder in the present utility model.
Fig. 4 is a schematic view of another side of the main beam according to the present utility model.
Fig. 5 is a schematic view of a side structure of the propulsion mechanism according to the present utility model.
Fig. 6 is a schematic view of the other side of the propulsion mechanism according to the present utility model.
Reference numerals are annotated as 100, a main beam, 101, a beam body, 102, a first sliding rail, 103, a limiting plate, 104, a first sliding groove, 105, a second sliding rail, 106, a second sliding groove, 107, a third sliding rail, 200, a pushing mechanism, 201, an installation seat, 202, an L-shaped installation plate, 203, a connecting seat, 204, a first roller, 205, a second roller, 206, a third roller, 207, a motor, 208, a first gear, 209, a second gear, 210, a connecting rod, 211, a movable plate, 212, a connecting plate, 213, a friction plate, 214, a spring, 300, a supporting frame, 400 and a hanging weight plate.
Detailed Description
The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent.
In one embodiment, as shown in fig. 1 and 2, an on-beam propulsion mechanism of a gantry crane comprises a main beam 100 and a propulsion mechanism 200, wherein the propulsion mechanism 200 is arranged on the main beam 100, two ends of the main beam 100 are provided with support frames 300, the lower end of the propulsion mechanism 200 is provided with a lifting plate 400, the propulsion mechanism 200 is provided with an overweight locking assembly, when in use, goods are lifted by the lifting plate 400, then the lifting plate 400 and the goods are driven by the propulsion mechanism 200 to transversely move to a designated position along the main beam 100, and when the goods are overweight, the overweight locking assembly locks the propulsion mechanism 200 so that the propulsion mechanism 200 cannot move.
In one embodiment, as shown in fig. 3 and fig. 4, the main beam 100 includes a beam body 101, the beam body 101 is of a cuboid structure with a slot in the middle, two first sliding rails 102 are symmetrically arranged at the top end of the beam body 101, limiting plates 103 are arranged at two ends of the first sliding rails 102, two first sliding grooves 104 are symmetrically arranged on the inner side wall of the beam body 101, two second sliding grooves 106 are symmetrically arranged on the outer side wall of the beam body 101, and in use, the lifting plate 400 and cargoes are driven to move transversely along the first sliding rails 102 on the beam body 101 through a pushing mechanism 200.
In one embodiment, as shown in fig. 3 and 4, the bottom surface of the first chute 104 is provided with a second slide rail 105, the top surface and the bottom surface of the second chute 106 are both provided with a third slide rail 107, the first chute 104 is provided with a third roller 206, and the second chute 106 is provided with a second roller 205.
In one embodiment, as shown in fig. 5 and 6, the propulsion mechanism 200 includes a mounting seat 201, a roller assembly and a driving assembly, the mounting seat 201 is disposed above the beam 101, two sides of the mounting seat 201 are provided with L-shaped mounting plates 202, the lower end of the mounting seat 201 is provided with a connecting seat 203, the connecting seat 203 is disposed in a slot in the middle of the beam 101, and in use, the driving assembly drives the roller assembly to rotate, so that the whole propulsion mechanism 200 moves along the beam 101.
In one embodiment, as shown in fig. 5, the roller assembly includes a first roller 204, a second roller 205 and a third roller 206, the first roller 204 is disposed between the L-shaped mounting plate 202 and the mounting seat 201, the first roller 204 is rotationally connected to both the L-shaped mounting plate 202 and the mounting seat 201, the second roller 205 is rotationally connected to the L-shaped mounting plate 202, and the third roller 206 is rotationally connected to the connection seat 203, in use, the first roller 204, the second roller 205 and the third roller 206 roll along the beam 101, thereby driving the whole propulsion mechanism 200 to move laterally along the beam 101.
In one embodiment, as shown in fig. 1 and 2, the lower end of the first roller 204 is in friction contact with the first sliding rail 102, the second roller 205 is disposed in the second sliding groove 106, the second roller 205 is both in friction contact with the third sliding rail 107 up and down, the third roller 206 is disposed in the first sliding groove 104, and the lower end of the third roller 206 is in friction contact with the second sliding rail 105, in use, the first roller 204 is made to roll along the first sliding rail 102, the second roller 205 is made to roll along the third sliding rail 107, and the third roller 206 is made to roll along the second sliding rail 105 by the driving assembly.
In one embodiment, as shown in fig. 6, the driving assembly includes a motor 207, the motor 207 is fixed on the outer side of the L-shaped mounting plate 202, the output end of the motor 207 is connected with the first roller 204, a first gear 208 is disposed on one side of the first roller 204 close to the motor 207, a second gear 209 is disposed between two adjacent first gears 208, and the second gear 209 is engaged with the first gears 208.
In one embodiment, as shown in fig. 5 and 6, the overweight locking assembly comprises a connecting rod 210, a movable plate 211 and a spring 214, wherein the connecting rod 210, the movable plate 211 and the spring 214 are connected to the upper end of the sling plate 400, the connecting rod 210 penetrates through the mounting seat 201, the connecting seat 203 and the movable plate 211, the movable plate 211 is arranged above the mounting seat 201, the connecting plates 212 are arranged on two sides of the movable plate 211, the friction plates 213 are arranged at the bottom ends of the connecting plates 212, the friction plates 213 are arranged above the first rollers 204, the spring 214 is arranged between the mounting seat 201 and the movable plate 211, when the goods hoisted on the sling plate 400 are overweight, the movable plate 211 moves downwards under the action of gravity, and the friction plates 213 are driven to squeeze the first rollers 204, so that the effect of locking the propelling mechanism 200 is achieved.
The above embodiment discloses a propelling mechanism on a beam of a gantry crane, when in use, a cargo is hoisted by a hoisting plate 400, and then a roller group is driven by a motor 207 to rotate so as to drive the propelling mechanism to move, thereby driving the hoisting plate 400 and the cargo to transversely move to a designated position along a main beam 100, when the cargo is overweight, a movable plate 211 moves downwards under the action of gravity so as to drive a friction plate 213 to squeeze a first roller 204, and thus the effect of locking the propelling mechanism 200 is achieved.
The foregoing is merely illustrative of the present application, and the present application is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present application. Therefore, the protection scope of the application is subject to the protection scope of the claims.