CN218174460U - Gantry crane - Google Patents

Abstract

The utility model discloses a gantry crane, which comprises a gantry, an inverted convex through hole is opened in the middle of the gantry, brackets are arranged on the lower sides of both ends of the gantry, and a cart is arranged at the bottom of the bracket. The door frame is provided with a trolley, and telescopic arms are provided on both sides of the lower part of the trolley, and a load-bearing seat is provided at one end of the telescopic arm on both sides, and a steel cable is provided on the lower side of the load-bearing seat, and a There is a crane, and the crane includes a control motor, a worm, a casing and a winding worm wheel. The bottom of the casing is fixed with a hook. The utility model drives the load-bearing seat to slide horizontally by setting a telescopic arm, and pulls the The steel cables deviate from each other to form a stable triangular structure. The original vertical force of the hook is decomposed into vertical and horizontal forces through the inclination of the steel cables, increasing horizontal constraints and improving the stability and safety of the crane when moving. The power requirements for the control motor are reduced through the self-locking characteristics of the wound worm gear and worm.

Description

a gantry crane

technical field

The utility model belongs to the technical direction of cranes, in particular to a gantry crane.

Background technique

At present, cranes are mainly used to hang large-volume objects. There are a large number of containers waiting to be loaded and unloaded at port terminals every day, which requires the use of a large number of cranes for operations. Traditional cranes mainly include tower cranes, gantry cranes, truck cranes and floating cranes.

The gantry crane has a wide range of uses, and can handle various pieces and bulk materials. It has the characteristics of large operating range, high site utilization rate, and wide adaptability. Most of the lifting devices of the gantry cranes currently used are completed by electric hoists and steel cables. When the cranes hang large objects, they will generate a large inertia. Shaking, which in turn causes the objects to be tied and fixed loose. In the prior art, the electric hoist drives multiple steel cables to pull the hanging objects, which lacks the constraints of horizontal movement, and the stability of hanging transportation is poor, and there is a great potential safety hazard. . This phenomenon has become a problem to be solved urgently by those skilled in the art.

Utility model content

The purpose of this utility model is to solve the problems raised in the above-mentioned background technology, aiming at a kind of gantry crane of the existing device.

In order to solve the above technical problems, the utility model provides the following technical solutions: a gantry crane, including a gantry, the middle part of the gantry is provided with an inverted convex through hole, and the lower sides of the two ends of the gantry are provided with brackets. A trolley is provided at the bottom of the bracket, a trolley is provided on the door frame, telescopic arms are provided on both sides of the lower part of the trolley, and a load-bearing seat is provided at one end of the telescopic arm on both sides, and a load-bearing seat is provided on the lower side of the load-bearing seat. A steel cable, the lower end of the steel cable is provided with a hoist, and the hoist includes a control motor, a worm, a housing and a winding worm wheel, and a hook is fixed at the bottom of the housing.

The utility model further explains that a load-bearing slide rail is provided in the middle of the inverted convex-shaped through hole, auxiliary rollers are provided on both sides of the load-bearing seat, and the load-bearing seat is slidingly connected with the load-bearing slide rail through the auxiliary rollers. There are driving rollers, a driving motor is arranged in the trolley, and the trolley is slidingly connected with the door frame through the driving rollers.

The utility model further explains that a winding shaft is fixed at the center of one side of the winding worm wheel, and the lower end of the steel cable is wound on the winding shaft. On the side, the winding worm gear is in meshing contact with the worm, the winding worm gear is rotationally connected to the housing, the worm is rotationally connected to the housing, and the output shaft of the control motor is fixedly connected to the worm.

Compared with the prior art, the beneficial effects achieved by the utility model are:

(1) The utility model drives the load-bearing seat to slide horizontally by setting the telescopic arm, and the steel cables on both sides of the traction deviate from each other to form a stable triangular structure. The original vertical force of the hook is decomposed into vertical and Horizontal force, increase horizontal constraints, improve the stability and safety of the crane when moving;

(2) Through the self-locking characteristics of the wound worm wheel and the worm, the utility model can effectively carry the load brought by the objects and reduce the power requirement for the control motor.

Description of drawings

The accompanying drawings are used to provide a further understanding of the utility model, and constitute a part of the description, and are used to explain the utility model together with the embodiments of the utility model, and do not constitute a limitation to the utility model. In the attached picture:

Fig. 1 is the overall structural representation of the utility model;

Fig. 2 is a schematic diagram of a partial cross-sectional structure of a front view of the utility model;

Fig. 3 is the structural representation of the dolly of the present utility model;

Fig. 4 is the structural representation of the crane of the present utility model;

In the figure: 1, mast; 11, load-bearing slide rail; 2, trolley; 21, telescopic arm; 22, load-bearing seat; 23, auxiliary roller; 3, bracket; 4, cart; 5, crane; 51, control Motor; 52, worm; 53, housing; 54, hook; 55, winding worm wheel; 6, steel cable.

detailed description

The technical solution of the utility model is described in further non-limiting detail below in combination with preferred embodiments and accompanying drawings. Apparently, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

Please refer to Figures 1-4, the utility model provides a technical solution: a gantry crane, including a gantry 1, a bracket 3 is fixed on the lower side of both ends of the gantry 1, the bracket 3 is distributed in a herringbone shape, and the bottom of the bracket 3 is welded with The trolley 4 slides on the door frame 1 and is equipped with a trolley 2. The telescopic arm 21 is fixed on both sides of the lower part of the trolley 2. The telescopic arm 21 is an electro-hydraulic telescopic rod. The lower side is fixedly connected with a steel cable 6, and the lower end of the steel cable 6 is connected with a crane 5. The telescopic arms 21 on both sides drive the load-bearing seat 22 to slide horizontally, and the steel cables 6 on both sides of the traction deviate from each other to form a stable triangular structure. Stability when the machine 5 is moving, reducing the excessive interference of inertia on the hanging of objects, and avoiding damage to the reliability of object fixing;

The bottom of the trolley 2 is provided with driving rollers that are offset against the upper surface of the mast 1. A driving motor is installed inside the trolley 2. The driving motor controls the rotation of the driving rollers. The trolley 2 is slidingly connected with the mast 1 through the driving rollers. The mast 1 is used to carry the trolley. 2 brings the load;

The middle part of the door frame 1 is provided with an inverted convex through hole, the middle part of the inverted convex through hole is provided with a load-bearing slide rail 11, and the two sides of the load-bearing seat 22 are provided with auxiliary rollers 23 adapted to the load-bearing slide rail 11, and the load-bearing seat 22 passes through the auxiliary rollers. 23 is slidably connected with the load-bearing slide rail 11, and multiple groups of parallel steel cables 6 can be arranged on the load-bearing seat 22 on one side to improve the load-bearing capacity and lateral stability. The auxiliary roller 23 ensures that the load-bearing seat 22 carries the load from the steel cables 6, At the same time, the sliding friction generated when the trolley 2 moves is reduced;

Crane 5 comprises control motor 51, worm screw 52, housing 53 and winding worm gear 55, and winding worm gear 55 side axis places are fixedly provided with winding shaft, and winding worm gear 55 is engaged with worm screw 52 and contacts, and winding worm gear 55 sets There are two groups, and they are arranged on both sides of the worm 52 respectively. The winding worm gear 55 is connected to the casing 53 through bearing rotation, and the lower end of the steel cable 6 is wound on the winding shaft;

The control motor 51 is arranged on the upper side of the housing 53 and is fixedly connected between them. The output shaft of the control motor 51 is fixedly connected to the worm 52. The worm 52 is connected to the housing 53 through bearing rotation. The bottom of the housing 53 is fixedly provided with a hook 54.

working principle:

When it is necessary to hang items, the cart 4 drives the equipment to move as a whole, and reaches the designated position. The control motor 51 in the crane 5 controls the rotation of the worm 52, and then controls the rotation of the worm wheel. The wire rope 6 is loosened by winding the worm wheel 55, and the hook is lowered. The height of 54 is convenient for fixing objects. After the objects are fixed, the reverse operation can be performed to pull up the hook 54, which is convenient for crossing obstacles, and cooperates with trolley 2 and cart 4 to carry out lifting.

In addition, the telescopic arms 21 on both sides drive the load-bearing base 22 to slide horizontally, pulling the steel cables 6 on both sides away from each other, and the steel cables 6 are stretched in a triangular shape due to the traction of the telescopic arms 21. The stable triangular structure restricts the shaking of the hook 54 The direction of the swing is changed from the original multi-degree-of-freedom swing to a single-direction swing, which effectively alleviates the inertial impact caused by moving or parking the object. According to the volume or quality of the object, the telescopic arm 21 can change the steel The inclination angle of the cable 6 decomposes the original vertical force of the hook 54 into vertical and horizontal forces through the inclination of the steel cable 6, increases the horizontal constraint, improves the structural stability, and facilitates the stable transportation of items.

At the same time, the self-locking characteristics of the wound worm wheel 55 and the worm 52 can effectively carry the load brought by the article, reduce the power requirement for the control motor 51, and improve the overall reliability and stability of the equipment.

In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", etc. are based on the drawings The orientation or positional relationship shown is only for the convenience of describing the utility model, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation of the utility model .

Finally, it should be pointed out that the above embodiments are only used to illustrate the technical solution of the present utility model, rather than to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements to some of the technical features and these Modification or replacement does not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims (6)

1. A gantry crane, comprising a gantry (1), characterized in that: the middle part of the gantry (1) is provided with an inverted convex through hole, and the lower sides of the two ends of the gantry (1) are provided with supports ( 3), the bottom of the support (3) is provided with a cart (4), the door frame (1) is provided with a trolley (2), and the lower two sides of the trolley (2) are provided with telescopic arms (21) , one end of the telescopic arm (21) on both sides is provided with a bearing seat (22), the lower side of the bearing seat (22) is provided with a steel cable (6), and the lower end of the steel cable (6) is provided with a crane ( 5), the crane (5) includes a control motor (51), a worm (52), a casing (53) and a winding worm wheel (55), and a hook (54) is provided at the bottom of the casing (53). 2. A gantry crane according to claim 1, characterized in that: a load-bearing slide rail (11) is provided in the middle of the inverted convex through-hole, and auxiliary rollers ( 23), the load-bearing seat (22) is slidingly connected with the load-bearing slide rail (11) through auxiliary rollers (23). 3. A gantry crane according to claim 1, characterized in that: the bottom of the trolley (2) is provided with driving rollers, the trolley (2) is provided with a driving motor, and the trolley (2) passes The driving roller is slidingly connected with the door frame (1). 4. A gantry crane according to claim 1, characterized in that: a winding shaft is provided at the center of one side of the winding worm wheel (55), and the lower end of the steel cable (6) is wound around the winding shaft superior. 5. A gantry crane according to claim 4, characterized in that: the winding worm gear (55) is provided with two groups, and is respectively arranged on both sides of the worm (52), and the winding worm gear (55 ) meshes with the worm (52). 6. A gantry crane according to claim 5, characterized in that: the winding worm wheel (55) is connected in rotation with the casing (53), and the worm (52) is connected to the casing (53) The output shaft of the control motor (51) is fixedly connected with the worm (52).

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