CN206232327U - Many overhead crane portal structures and crane - Google Patents

Abstract

The utility model provides a multi-bridge crane bridge structure and a crane, which relate to the technical field of mechanical manufacturing and include several bridge frames, the bridge frame includes a main girder and an end beam; a load beam for supporting is arranged between the adjacent end beams, and the load beam is flat Rows are set at intervals, guide rails are provided on the bridge frame, and guide rail fixing blocks are provided at both ends of the guide rails; a support mechanism is provided at the bottom of the end beam, and the support mechanism is fixedly connected with the end beam. The support mechanism is a rubber bearing; the rubber bearing is divided into the first The cover plate and the second cover plate, the second cover plate is a square with a groove in the middle, the cross section of the second cover plate is concave shape, the first cover plate is provided with a protrusion matching the groove in the middle, and the second cover plate is provided with a protrusion matching the groove. Both ends of the first cover plate are provided with raised parts wrapping the second cover plate; the problem of the overall stability of the steel structure foundation is solved, and this kind of crane has simple structure, low cost, and extremely convenient installation and maintenance.

Description

Multi-bridge crane bridge structure and crane

technical field

The utility model relates to the technical field of mechanical manufacturing, in particular to a multi-bridge crane bridge structure and a crane.

Background technique

The bridge crane is a lifting device that is horizontally placed over the workshop, warehouse and stockyard for material lifting. It is the most widely used and the largest number of cranes. Cranes have driven the rapid development of my country's large-scale infrastructure construction, energy industry, real estate industry, petrochemical industry and shipbuilding industry.

The bridge cranes in the prior art often only have a single trolley and a single hook, so that the carrying weight is limited, and a single trolley can easily block the operator's sight, making the operation difficult, thereby increasing the risk value. However, when the single hook transports long-shaped goods, such as steel bars, it will cause the goods to shake, which will easily cause injuries to the staff in the workshop or warehouse.

Traditional overhead cranes tend to be bulky and waste a lot of material. And in the hoisting of goods, due to the rigid material, there will be a certain degree of deflection change, and the connection of the bridge structure of the crane is a rigid connection. This rigid connection shortens the service life of the crane and is unfavorable to the steel structure foundation.

With the development of a resource-saving society, the development of bridge cranes also tends to be lightweight, which puts forward higher requirements for the structure of bridge cranes. How to meet the requirements of industrial overhead cranes while saving materials has become a challenge.

Utility model content

The purpose of the utility model is to provide a multi-bridge crane bridge structure and a crane, so as to alleviate the instability of heavy objects when hoisting too long heavy objects, thereby improving safety.

In order to achieve the above object, the utility model provides the following technical solutions:

In the first aspect, the utility model provides a multi-bridge crane bridge structure, including: several bridges, and the bridges include main girders and end girders;

Load beams for support are arranged between adjacent end beams, the load beams are arranged in parallel and at intervals, guide rails are arranged on the bridge frame, and guide rail fixing blocks are arranged at both ends of the guide rails;

The lower part of the end beam is provided with a support mechanism, the support mechanism is fixedly connected with the end beam, and the support mechanism is a rubber bearing;

The rubber bearing is divided into a first cover plate and a second cover plate, the second cover plate is a square with a groove in the middle, the cross section of the second cover plate is concave, and the first cover plate The middle of the plate is provided with a raised part matching with the groove, and the two ends of the first cover board are provided with raised parts wrapping the second cover board.

Further, the main girder of the bridge frame is provided with a guide rail for connecting with the lifting trolley.

Further, the rubber bearings are arranged symmetrically.

Further, the guide rail fixing block is detachably connected to the bridge frame by bolts.

Further, the inside of the main girder is a hollow structure, and the hollow structure of the main girder is divided into several cavities by a reinforcing mesh.

Further, the reinforcing net includes: ribs, partitions and horizontal reinforcing plates, the horizontal reinforcing plates are horizontally arranged in the hollow structure of the main beam, the plate near the upper end of the main beam is the upper cover plate, and the upper plate near the upper end The horizontal reinforcing plate of the cover plate is the first horizontal reinforcing plate, the partition is vertically arranged between the upper cover plate and the first horizontal reinforcing plate, and the ribs are vertically arranged on the other horizontal reinforcing plates between.

In the second aspect, the utility model also provides a crane, including: a driver's cab, a lifting trolley, a hook and any one of the multi-bridge crane bridge structures provided in the first aspect.

Further, the said hook is a 360° rotating hook.

Further, two adjacent bridge guide rails are connected with lifting trolleys.

Further, there are at least two trolleys.

The multi-bridge crane bridge structure and the crane provided by the utility model have the following beneficial effects:

Adopting a multi-bridge crane bridge structure provided by the utility model, through the multiple bridges erected, and guide rails are arranged on the adjacent bridges, by setting several bridges, the carrying capacity of the bridge crane is increased; and adjacent There are load beams between the bridge frames. Through the setting of the load beams, the force of the bridge frames can be evenly shared, and elastic support structures are provided at both ends of the bridge frames. The above-mentioned various combination connection methods greatly improve the overall stability of the steel structure foundation. It is unique, simple in structure, low in cost, and extremely convenient to install and maintain.

With the crane provided by the utility model, multiple trolleys and 360° rotating hooks are arranged on the basis of the bridge structure of the multi-bridge crane, thereby increasing the driver's vision range in the trolley and the ability to carry long cargo. ability.

Description of drawings

In order to more clearly illustrate the specific implementation of the utility model or the technical solutions in the prior art, the accompanying drawings that need to be used in the description of the specific implementation or the prior art will be briefly introduced below. Obviously, the following descriptions The accompanying drawings are some implementations of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without any creative work.

Fig. 1 is the schematic diagram of the three-dimensional structure of the multi-bridge crane provided by the embodiment of the utility model;

Fig. 2 is the schematic diagram of the three-dimensional structure of the multi-bridge crane bridge provided by the embodiment of the present invention;

Figure 3 is a schematic diagram of the internal structure of the multi-bridge crane bridge provided by the embodiment of the present invention;

Fig. 4 is a schematic diagram of the bridge end beam supporting mechanism of the multi-bridge crane provided by the embodiment of the present invention.

Icons: 100-bridge; 110-main girder; 111-top cover; 120-end beam; 130-load beam; 140-guide rail; 141-guide rail fixing block; 200-rubber bearing; 210-first cover plate; 220-the second cover plate; 300-lifting trolley; 400-cab; 510-rib plate; 520-partition plate;

detailed description

The technical solutions of the utility model will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are part of the embodiments of the utility model, but 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.

In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" The orientation or positional relationship indicated by etc. is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, use a specific The azimuth structure and operation, therefore can not be construed as the limitation of the present utility model. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and should not be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless otherwise clearly stipulated and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a flexible connection. Detachable connection, or integral connection; it can be mechanical connection or electrical connection; it can be direct connection or indirect connection through an intermediary, and it can be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present utility model in specific situations.

The specific implementation manner of the present utility model is described in detail below in conjunction with accompanying drawing. It should be understood that the specific embodiments described here are only used to illustrate and explain the utility model, and are not intended to limit the utility model.

Fig. 1 is the schematic diagram of the three-dimensional structure of the multi-bridge crane provided by the embodiment of the utility model;

Fig. 2 is the schematic diagram of the three-dimensional structure of the multi-bridge crane bridge provided by the embodiment of the present invention;

Figure 3 is a schematic diagram of the internal structure of the multi-bridge crane bridge provided by the embodiment of the present invention;

Fig. 4 is a schematic diagram of the bridge end beam supporting mechanism of the multi-bridge crane provided by the embodiment of the present invention.

Please refer to Fig. 1, Fig. 2, Fig. 3 and Fig. 4, the multi-bridge crane bridge structure and the crane provided by the embodiment of the utility model will be described in detail below in conjunction with the accompanying drawings.

The embodiment of the first aspect of the utility model provides a multi-bridge crane bridge structure, including:

Several bridge frames 100, the bridge frame 100 includes a main girder 110 and an end girder 120;

A load beam 130 for supporting is arranged between adjacent end beams 120, the load beams 130 are arranged in parallel and spaced apart, guide rails 140 are arranged on the bridge frame 100, and guide rail fixing blocks 141 are arranged at both ends of the guide rail 140;

The lower part of the end beam 120 is provided with a support mechanism, the support mechanism is fixedly connected with the end beam 120, and the support mechanism is a rubber bearing 200;

The rubber bearing 200 is divided into a first cover plate 210 and a second cover plate 220, the second cover plate 220 is a square with a groove in the middle, the cross section of the second cover plate 220 is concave, and the first cover plate 210 is A protruding portion matching the groove is provided in the middle, and protruding portions wrapping the second cover plate 220 are provided at both ends of the first cover plate 210 .

The bridge crane is a lifting device that is horizontally placed over the workshop, warehouse and stockyard for material lifting. Because its two ends are located on tall concrete pillars or metal supports, it is shaped like a bridge. The bridge frame of the bridge crane runs longitudinally along the tracks laid on the elevated sides on both sides, which can make full use of the space under the bridge frame to lift materials without being hindered by ground equipment. It is a kind of hoisting machinery with the widest range and the largest number.

It should be noted that the multi-bridge crane bridges can be set with 2, 3, 4 or even more according to actual work needs, and the number of bridges 100 is determined by the length and weight of the cargo.

Because the end beam 120 is connected with the factory building or other supports, it is under the greatest pressure, and therefore it is the most likely place to break, and it is a problem concentration point where safety accidents are likely to occur. And when the bridge crane bridge lifts goods, the deflection change is the largest at the center of the main girder 110 of the bridge frame. Therefore, after comprehensive consideration of stress load analysis and deflection change, a support mechanism of rubber bearing 200 is provided at the end beam 120 .

The rubber bearing 200 is tightly combined with rubber and thin plates to support the weight of the bridge frame 100. The plate rubber bearing 200 is formed by inlaying, bonding and vulcanizing multiple layers of natural rubber and at least two layers of thin steel plates of the same thickness.

This type of rubber support 200 has sufficient vertical rigidity to bear the vertical load, and can reliably transmit the pressure of the bridge 100 to the supports in the factory building, and has good elasticity to adapt to the bridge 100 caused by the shaking of the goods. When rotating, there is a large shear deformation to meet the horizontal displacement of the bridge frame 100 structure.

Among them, the material of the rubber bearing is divided into polytetrafluoroethylene and ordinary rubber bearing according to whether it can provide horizontal displacement.

Considering that the vertical direction of the bridge frame 100 will produce a certain deflection, the deflection is related to the size of the load, that is, the weight and shape of the hoisted goods, the cross-sectional size of the bridge frame, and the physical properties of the material of the bridge frame.

The mechanism of the rubber bearing 200 is: divided into a first cover 210 and a second cover 220, the second cover 220 is a square with a groove in the middle, the cross section of the second cover 220 is concave, the first The cover plate 210 is provided with a protrusion in the middle to match the groove, and the two ends of the first cover plate 210 are provided with protrusions wrapping the second cover plate 220 .

It should be noted that the concave-shaped second cover plate 220 of the rubber bearing 200 and the first cover plate 210 matched with it are in a non-compressed state when the bridge frame 100 of the crane is not stressed. When there is cargo, due to the effect of gravity, the rubber support 200 is in a compressed state, and due to the resetting property of the rubber itself, it has a certain protective effect on the end beam 120 of the bridge frame 100 .

Because in the hoisting of goods by bridge crane, the force of the crane bridge will be uneven due to the certain shaking of the goods, and there will be strength problems such as metal fatigue after repeated use, so in order to increase the stability of the adjacent bridge 100 In particular, load beams 130 for support are arranged between adjacent bridge frames 100, and the load beams 130 are arranged in parallel and at intervals, and the number of load beams 130 is also increased according to actual usage conditions.

Metal fatigue refers to the process in which materials and components gradually produce local permanent cumulative damage in one or several places under the action of cyclic stress or cyclic strain, and cracks or sudden complete fracture occur after a certain number of cycles. When the material and structure are subjected to repeated load changes, although the stress value has never exceeded the strength limit of the material, even if it is lower than the elastic limit, damage may occur. The failure phenomenon of the structure is called the fatigue failure of the metal.

The internal structure of the metal is not uniform, resulting in an imbalance of stress transmission, and some places will become stress concentration areas. At the same time, there are many tiny cracks at the defects inside the metal. Under the continuous action of the force, the crack will become bigger and bigger, and the part of the material that can transmit the stress will become less and less, until the remaining part can no longer transmit the load, and the metal components will be completely destroyed.

In addition, a guide rail 140 is provided on the bridge frame 100 , and the guide rail 140 is provided on the upper part of the bridge frame 100 . The guide rail 140 is used to set the running channel of the lifting trolley 300 for hoisting goods.

In addition, guide rail fixing blocks 141 are provided at both ends of the guide rail 140 ; thus, they are used to stop the operation of the lifting trolley 300 .

In addition, the main girder 110 of the bridge frame 100 is provided with a guide rail 140 for connecting with the lifting trolley 300 . The lifting trolley 300 is provided with electrical devices to ensure the operation of the lifting trolley 300 .

In addition, the rubber bearings 200 are arranged symmetrically. Therefore, the stability of the bridge frame of the bridge crane can be better increased, and the force on the bridge frame 100 is more balanced, thereby increasing the service life of the bridge frame of the bridge crane.

In addition, the guide rail fixing block 141 is detachably connected to the bridge frame 100 by bolts.

The bridge frame is generally a metal structure, and there are many structural types of the main girder of the bridge frame. The typical ones are:

1. Box structure

(1) The box-shaped double girder on the right track is a basic form widely used. The main girder is composed of upper and lower flange plates and vertical webs on both sides. The trolley rail is arranged on the center line of the upper flange plate. Its The structure is simple, the manufacture is convenient, and it is suitable for batch production, but the self-weight is relatively large.

(2) The section of partial rail box-shaped double girder and partial rail box-shaped single main girder is composed of upper and lower flange plates and main and auxiliary webs of unequal thickness. The trolley rails are arranged above the main web. The short stiffeners in the body can be omitted, and the off-track box-shaped single main girder is replaced by a wide-flange box-shaped main girder for two main girders. The weight is small, but the manufacturing is more complicated.

2. Four truss structure

A closed space structure is composed of 4 planar trusses. The surface of the upper horizontal truss is generally covered with a walking platform, which has light weight and high rigidity. However, compared with other structures, it has larger dimensions, more complicated manufacturing, and lower fatigue strength. Less produced.

3. Faster truss structure

Similar to the off-track box-shaped girder, it has light weight and high overall rigidity, which is a type widely used in China.

The bridge structure of the multi-bridge crane in the utility model is the third type of the above-mentioned three, and is improved on this basis.

In addition, the interior of the main girder 110 is a hollow structure, and such a structure is set to solve the problem of large amount of materials used in existing bridge cranes and heavy weight. The hollow structure of the main beam 110 is divided into several cavities by the reinforcing net, which better increases the stability and strength of the steel structure.

In addition, the reinforcing net includes: ribs 510, partitions 520 and horizontal reinforcing plates 530. The horizontal reinforcing plates 530 are horizontally arranged in the hollow structure of the main beam 110, and the plate near the upper end of the main beam 110 is the upper cover plate 111. The horizontal reinforcing plate 530 of the cover plate 111 is the first horizontal reinforcing plate 531 , the separator 520 is vertically arranged between the upper cover plate 111 and the first horizontal reinforcing plate 531 , and the ribs 510 are vertically arranged between the other horizontal reinforcing plates 530 .

In the multi-bridge crane bridge structure of the utility model, the bridge frame can be combined in segments, and the thickness of 100 steel plates in each bridge frame is changed according to the force, thereby reducing weight and saving materials.

According to the arrangement of the ribs 510 , partitions 520 and horizontal reinforcing plates 530 , the stability of the whole bridge frame 100 is improved.

The utility model also provides a crane, including: a driver's cab 400, a lifting trolley 300, a hook and any one of the multi-bridge crane bridge structures provided in the first aspect.

In addition, the hook is a 360° swivel hook.

Specifically, hook shape Hooks are divided into single hooks and double hooks according to shape; according to manufacturing methods, they are divided into forged hooks and laminated hooks. The single hook is easy to manufacture and easy to use, but the force is not good, and it is mostly used in workplaces with a lifting capacity of less than 80 tons; when the lifting capacity is large, a double hook with symmetrical force is often used. The laminated hook is riveted by several cut and formed steel plates. The whole hook will not be damaged when a few plates crack, and the safety is better, but the dead weight is relatively large, and it is mostly used on cranes with large lifting capacity. The hook is often impacted during operation and must be made of high-quality carbon steel with good toughness. The performance of the material used for the hook should not be lower than the mechanical performance of No. 20 steel. If it is made of high-strength alloy steel, its elongation must not be lower than 20%.

In addition, a lifting trolley 300 is connected to the guide rails 140 of two adjacent bridge frames 100 . Through the movement of the lifting trolley 300, the working range of the hook is increased.

In addition, there are at least two lifting trolleys 300 . The quantity of lifting trolleys 300 is determined according to the number of bridge frames of the bridge cranes provided, and the quantity is set according to the length and size of the hoisted goods.

Adopting a multi-bridge crane bridge structure provided by the utility model, through the multiple bridges erected, and guide rails are arranged on the adjacent bridges, by setting several bridges, the carrying capacity of the bridge crane is increased; and adjacent There are load beams 130 between the bridge frames. Through the setting of the load beams 130, the force of the bridge frames can be evenly shared, and elastic support structures are provided at both ends of the bridge frames. The connection methods of the above combinations greatly improve the stability of the steel structure foundation Overall stability, simple structure, low cost, and extremely convenient installation and maintenance.

With the crane provided by the utility model, multiple trolleys and 360° rotating hooks are arranged on the basis of the bridge structure of the multi-bridge crane, thereby increasing the driver's vision range in the trolley and the ability to carry long cargo. ability.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present utility model, and are not intended to limit it; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand : It is still possible to modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements to some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions depart from the various embodiments of the present invention Scope of technical solutions.

Claims (10)

1. a kind of many overhead crane portal structures, it is characterised in that including：Several crane span structures, the crane span structure (100) is including master Beam (110) and end carriage (120)；

The load beam (130) for supporting, load beam (130) parallel interval are provided between the adjacent end carriage (120) Set, guide rail (140) is provided with the crane span structure (100), guide rail (140) two ends are provided with guide rail fixed block (141)；

End carriage (120) bottom is provided with supporting mechanism, and the supporting mechanism is fixedly connected with end carriage (120), the support Mechanism is rubber support；

The rubber support (200) is divided into the first cover plate (210) and the second cover plate (220), and second cover plate (220) is square Middle setting has a groove, and the cross section of second cover plate (220) is concave shape, and first cover plate (210) is centre The lug boss with the groove fit is provided with, the first cover plate (210) two ends are provided with parcel second cover plate (220) Lug boss.

2. many overhead crane portal structures according to claim 1, it is characterised in that crane span structure (100) girder (110) guide rail (140) for being connected with trolley (300) is provided with.

3. many overhead crane portal structures according to claim 1, it is characterised in that the rubber support (200) is It is symmetrical arranged.

4. many overhead crane portal structures according to claim 1, it is characterised in that the guide rail fixed block (141) With the crane span structure (100) for bolt is detachably connected.

5. many overhead crane portal structures according to claim 1, it is characterised in that is inside the girder (110) Hollow structure, girder (110) hollow structure is divided into several cavitys by reinforcing mat.

6. many overhead crane portal structures according to claim 5, it is characterised in that the reinforcing mat includes：Floor (510), dividing plate (520) and horizontal reinforcing plates (530), the horizontal reinforcing plates (530) are horizontally set in the girder (110) In hollow structure, the plate near girder upper end is upper cover plate (111), near the horizontal reinforcing plates of the upper cover plate (111) (530) it is first level reinforcing plate (531), the dividing plate (520) is vertically set on the upper cover plate (111) and first water In the middle of flat reinforcing plate (531), the floor (510) is vertically set between other described horizontal reinforcing plates.

7. a kind of crane, it is characterised in that including：Drivers' cab (400), trolley (300), suspension hook and claim 1-6 Many overhead crane portal structures in any one.

8. crane according to claim 7, it is characterised in that described suspension hook is 360 ° of shackle hooks.

9. crane according to claim 7, it is characterised in that the guide rail (140) of two neighboring crane span structure is connected with lifting Dolly (300).

10. crane according to claim 9, it is characterised in that the trolley (300) is at least 2.