CN219603110U - Large-span portal crane - Google Patents

Abstract

The utility model provides a large-span portal crane, which relates to the field of cranes and comprises the following components: the crane comprises a crane body and a hook, wherein a balance top plate is welded and fixed at the upper end of the hook, a second steel wire rope is connected to the balance top plate through a connecting block, a winding and unwinding cylinder is wound on the inner side of the second steel wire rope, the front end and the rear end of the winding and unwinding cylinder are connected with the wall of an adjusting box through mounting end plates, and a stepping motor is connected to the side end of the winding and unwinding cylinder through a rotating shaft. The utility model solves the defect that the goods fall off due to the inclination of the hooks when the hooks connected by the fixing ropes hang the goods with unbalanced weight in the prior art.

Description

Large-span portal crane

Technical Field

The utility model relates to the field of cranes, in particular to a large-span portal crane.

Background

The portal crane belongs to a hoisting machine, and is a machine capable of doing circulating and intermittent motion, and comprises a lifting mechanism, an operating mechanism, an amplitude changing mechanism, a rotating mechanism, a metal structure and the like, wherein the prior art (application number: CN 202221306800.2) describes that a hook is stable under the combined action of two fixed ropes, so that the hook is prevented from shaking in the process of lifting a heavy object to cause unhooking, the lifting of the stability of the hook is realized, the hook is prevented from shaking to cause the heavy object to fall off to cause danger, and the defect that the falling of the cargo is caused by the inclination of the hook when the weight of the hook connected with the fixed ropes hangs unbalanced weight of the cargo in the prior art is recorded.

Disclosure of Invention

In order to overcome the defects existing in the prior art, the large-span portal crane is provided at present, so that the defect that the cargoes fall due to the inclination of the hooks when the hooks connected by the fixing ropes hang the cargoes with unbalanced weight in the prior art is overcome.

To achieve the above object, there is provided a large-span gantry crane comprising: a crane body and a hook,

the balanced roof is connected with a second steel wire rope through a connecting block, a winding and unwinding cylinder is wound on the inner side of the second steel wire rope, the front end and the rear end of the winding and unwinding cylinder are connected with the wall of the regulating box through mounting end plates, and the side end of the winding and unwinding cylinder is connected with a stepping motor through a rotating shaft.

Further, a portal is welded at the lower end of the crane body, an operating mechanism is installed at the lower end of the portal, and a driving mechanism is installed at the lower end face of the crane body beam.

Further, the surface of the driving mechanism is connected with an electric lifting mechanism, and the electric lifting mechanism is connected with a balance top plate through a first steel wire rope; and the left side and the right side of the first steel wire rope are distributed with second steel wire ropes.

Further, the lower end face of the balance top plate is symmetrically fixed with infrared positioners; and the infrared positioner is positioned at the side end of the hook, and the upper end surface of the regulating box is welded and fixed with the shell of the electric lifting mechanism.

Further, a through groove is formed in the middle of the adjusting box; and the first steel wire rope penetrates through the inside of the penetrating groove, and the winding and unwinding cylinders are respectively arranged at the left side and the right side of the penetrating groove.

Further, a rope outlet notch is formed in the lower end face of the adjusting box; and the rope outlet groove is penetrated by a second steel wire rope, and the upper end surface of the balance top plate is fixed with an electronic level meter.

Further, the adjusting box, the second steel wire rope, the winding and unwinding cylinder and the stepping motor form a hook inclination-preventing adjusting structure; and the stepping motor is fixedly connected with the side end of the regulating box in a threaded manner.

The large-span gantry crane has the beneficial effects that the two groups of steel wire ropes are symmetrically hung on the left side and the right side of the upper end of the hook by utilizing the second steel wire ropes wound on the surfaces of the two groups of winding and unwinding cylinders at the inner side of the regulating box, the two groups of steel wire ropes are respectively contracted or stretched by regulating the stepping motor, the inclined hook is regulated and balanced, so that the weight unbalanced weight can be more stably hung, the hook inclination prevention function of the large-span gantry crane is realized, the potential safety hazard of goods hanging inclined falling is reduced, and the hanging effect of the large-span gantry crane is improved.

Drawings

Fig. 1 is a schematic diagram of a formal structure of a large-span gantry crane according to an embodiment of the present utility model.

Fig. 2 is a schematic diagram of a cross-sectional front view connection structure of a hook and an adjusting box according to an embodiment of the present utility model.

Fig. 3 is a schematic top view cross-section connection structure of an adjusting box according to an embodiment of the present utility model.

Fig. 4 is a schematic front view of a hook according to an embodiment of the present utility model.

In the figure: 1. a crane body; 11. a door frame; 12. an operating mechanism; 13. a driving mechanism; 14. an electrical lifting mechanism; 15. a first wire rope; 2. a hook; 21. a balancing top plate; 22. a joint block; 23. an infrared locator; 3. an adjusting box; 31. a through groove; 32. rope outlet notch; 4. a second wire rope; 41. a winding and unwinding cylinder; 42. installing an end plate; 43. a rotating shaft; 44. a stepping motor; 5. an electronic level.

Detailed Description

Other advantages and effects of the present utility model will become apparent to those skilled in the art from the following disclosure, which describes the embodiments of the present utility model with reference to specific examples. The utility model may be practiced or carried out in other embodiments that depart from the specific details, and the details of the present description may be modified or varied from the spirit and scope of the present utility model.

Referring to fig. 1 to 4, the present utility model provides a large span gantry crane comprising: a crane body 1 and a hook 2,

the upper end of the hook 2 is fixedly welded with a balance top plate 21, the balance top plate 21 is connected with a second steel wire rope 4 through a connecting block 22, a winding and unwinding cylinder 41 is wound on the inner side of the second steel wire rope 4, the front end and the rear end of the winding and unwinding cylinder 41 are connected with the wall of the regulating box 3 through an installation end plate 42, and the side end of the winding and unwinding cylinder 41 is connected with a stepping motor 44 through a rotating shaft 43.

Working principle: when the hook 2 lifts the goods and inclines, the stepping motor 44 drives the winding and unwinding drum 41 to rotate, so that the second steel wire rope 4 connected with one downward inclined end is contracted upwards, the second steel wire rope 4 connected with one upward inclined end is stretched downwards, and the operation is stopped until the electronic level meter 5 detects no inclination angle.

In the embodiment, a gantry 11 is welded at the lower end of the crane body 1, a running mechanism 12 is installed at the lower end of the gantry 11, and a driving mechanism 13 is installed at the lower end face of a beam of the crane body 1.

As a preferred embodiment, the running gear 12 facilitates movement of the large span gantry crane. The driving mechanism 13 is used for driving the hook 2 to move and adjust left and right.

In the embodiment, the surface of the driving mechanism 13 is connected with an electric lifting mechanism 14, and the electric lifting mechanism 14 is connected with a balance top plate 21 through a first steel wire rope 15; and the second steel wire ropes 4 are distributed on the left side and the right side of the first steel wire rope 15.

As a preferred embodiment, the balancing top plate 2 facilitates the connection of the hanger 2 with the second wire rope 4. The three groups of steel wire ropes respectively bear the functions of supporting and adjusting, and ensure that the hooks 2 stably hoist cargoes.

In the embodiment, the lower end surface of the balance top plate 21 is symmetrically fixed with an infrared positioner 23; and the infrared locator 23 is positioned at the side end of the hook 2, and the upper end face of the adjusting box 3 is welded and fixed with the outer shell of the electric lifting mechanism 14.

As a preferred embodiment, the infrared positioner 23 facilitates the better positioning of the descending position of the hook 2 by the infrared beam, and reduces the deviation of the descending of the hook 2. The infrared positioner 23 is convenient for driving the hook 2 to lift.

In the present embodiment, a through groove 31 is provided in the middle of the regulating box 3; the first wire rope 15 is inserted into the insertion groove 31, and the winding and unwinding drums 41 are respectively mounted on the left and right sides of the insertion groove 31.

As a preferred embodiment, the first steel wire rope 15 is used for driving the hook 2 to move downwards, so that the cargo is conveniently lifted, and the second steel wire rope 4 and the first steel wire rope 15 stretch at the same time when the first steel wire rope 15 stretches.

In the embodiment, the lower end surface of the regulating box 3 is provided with a rope outlet 32; and the second steel wire rope 4 penetrates through the rope outlet 32, and the electronic level meter 5 is fixed on the upper end surface of the balance top plate 21.

As a preferred embodiment, the electronic level 5 is convenient to detect the balance degree of the balance top plate 21, and the tension on the left side and the right side is convenient to be adjusted according to the measured inclination angle, so that the hook 2 at the lower end is adjusted to be in a balanced state.

In the embodiment, an adjusting box 3, a second steel wire rope 4, a winding and unwinding cylinder 41 and a stepping motor 44 form an anti-tilting adjusting structure of the hook 2; and a stepping motor 44 is screw-fixed at the side end of the regulating box 3.

As a preferred embodiment, the hook 2 inclination-preventing adjusting structure is convenient for more stably hanging and moving the weight unbalanced weight, reduces the potential safety hazard of goods hanging and inclination falling, and improves the hanging effect of the large-span portal crane.

The large-span gantry crane can effectively solve the defect that cargoes fall caused by the inclination of the hooks, is convenient for more stably hanging and moving heavy objects with unbalanced weight, realizes the function of preventing the inclination of the hooks of the large-span gantry crane, reduces the potential safety hazard of the cargoes hanging and inclined falling, improves the hanging effect of the large-span gantry crane, and is suitable for the large-span gantry crane.

Claims (7)

1. A large span gantry crane comprising: crane body (1) and couple (2), its characterized in that:

the balancing device is characterized in that a balancing top plate (21) is fixedly welded at the upper end of the hook (2), the balancing top plate (21) is connected with a second steel wire rope (4) through a connecting block (22), a winding and unwinding cylinder (41) is wound on the inner side of the second steel wire rope (4), the front end and the rear end of the winding and unwinding cylinder (41) are connected with the groove wall of the adjusting box (3) through mounting end plates (42), and the side end of the winding and unwinding cylinder (41) is connected with a stepping motor (44) through a rotating shaft (43).

2. The large-span portal crane according to claim 1, wherein a portal frame (11) is welded at the lower end of the crane body (1), a running mechanism (12) is installed at the lower end of the portal frame (11), and a driving mechanism (13) is installed at the lower end face of a cross beam of the crane body (1).

3. A long span gantry crane according to claim 2, characterized in that the surface of the drive mechanism (13) is connected with an electric lifting mechanism (14), the electric lifting mechanism (14) being connected with a balancing top plate (21) by means of a first wire rope (15); and the left side and the right side of the first steel wire rope (15) are distributed with the second steel wire ropes (4).

4. A long span gantry crane according to claim 1, characterized in that the lower end surface of the balancing top plate (21) is symmetrically fixed with infrared positioners (23); and the infrared locator (23) is positioned at the side end of the hook (2), and the upper end surface of the adjusting box (3) is welded and fixed with the shell of the electric lifting mechanism (14).

5. A long span gantry crane according to claim 1, characterized in that the middle part of the adjusting box (3) is provided with a through slot (31); and the first steel wire rope (15) penetrates through the inside of the penetrating groove (31), and the winding and unwinding cylinders (41) are respectively arranged at the left side and the right side of the penetrating groove (31).

6. The large-span gantry crane according to claim 1, wherein the lower end surface of the adjusting box (3) is provided with a rope outlet groove (32); and the second steel wire rope (4) penetrates out of the rope outlet groove (32), and an electronic level meter (5) is fixed on the upper end surface of the balance top plate (21).

7. The large-span gantry crane according to claim 1, wherein the adjusting box (3), the second steel wire rope (4), the winding and unwinding drum (41) and the stepping motor (44) form an inclination-preventing adjusting structure of the hook (2); and the stepping motor (44) is fixedly connected with the side end of the adjusting box (3) in a threaded manner.