阅读说明：本技术 一种适合大型桥机的起升小车 (Lifting trolley suitable for large bridge crane ) 是由 胡水根 李太周 赵伟星 郭志康 石小飞 赵小伟 郭爱霞 张经勇 于 2019-11-05 设计创作，主要内容包括：本发明公开一种适合大型桥机的起升小车,属于起重机械的技术领域。本发明对起升机构进行了模块化处理、并采用双轨形式,改善了主梁的受力,受力合理、定位快速、安装方便、便于模块化制作,同时也大大降低了高度低、减轻了自重；本发明对行走机构台车进行了模块化处理,利用起升机构模块的增减与升吊梁快速组装,可以灵活组配成不同型号和起重范围的桥机,扩大了桥机的使用范围,降低了生产成本；同时,本发明没有整体式车架,借助搭接行走机构台车模块的连接梁和挂装起升机构模块的起吊梁组成了本发明的安装骨架,结构紧凑、重量轻、安装空间大。(The invention discloses a lifting trolley suitable for a large bridge crane, and belongs to the technical field of lifting machinery. The invention carries out modular processing on the hoisting mechanism, adopts a double-track form, improves the stress of the main beam, has reasonable stress, quick positioning, convenient installation and convenient modular manufacture, and simultaneously greatly reduces the height and lightens the self weight; the invention carries out modular processing on the travelling mechanism trolley, utilizes the increase and decrease of the hoisting mechanism module and the rapid assembly of the hoisting beam, can be flexibly assembled into bridge cranes with different models and hoisting ranges, enlarges the application range of the bridge cranes and reduces the production cost; meanwhile, the invention has no integral frame, and the installation framework of the invention is formed by the connecting beam of the overlapping travelling mechanism trolley module and the lifting beam of the hanging lifting mechanism module, and has compact structure, light weight and large installation space.)

1. The utility model provides a play to rise dolly that is fit for large-scale bridge crane which characterized in that: the lifting mechanism comprises four travelling mechanism trolley modules (1) symmetrically arranged on two main beams (6), two connecting beams (2) lapped above the front travelling mechanism trolley module and the rear travelling mechanism trolley module on the same side, a lifting beam (3) transversely lapped above the middle top of the two connecting beams (2), a plurality of lifting mechanism modules (4) hung on two sides of the lifting beam (3), and a pulley block lifting system (5) hung on the lower part of the lifting beam (3);

the running gear trolley module (1) comprises a cross hinge shaft box (1-2) internally provided with a transverse shaft (1-3) and a longitudinal shaft (1-4), a driven wheel set (1-1) and a driving wheel set (1-6) which are arranged at two outer extending ends of the transverse shaft (1-3) in a penetrating manner, positioned at the left and right outer sides of the cross hinge shaft box (1-2) and respectively supported on a double guide rail (7), a driving shaft (1-7) arranged at the outer side end of the driving wheel set (1-6) in a cantilever manner, a driving device (1-8) arranged on the driving shaft (1-7), and a support (1-5) positioned through the longitudinal shaft (1-4) and fixed above the cross hinge shaft box (1-2); the transverse shaft (1-3) and the longitudinal shaft (1-4) are vertically and crossly arranged in the horizontal direction, the distance between the two axes is smaller than the sum of the radiuses of the transverse shaft (1-3) and the longitudinal shaft (1-4), and the transverse shaft (1-3) is provided with an arc-shaped groove for clamping and embedding the longitudinal shaft (1-4);

the hoisting mechanism module (4) comprises a winding drum support (4-1) and a winding drum (4-2) of a U-shaped frame structure, the right end of the winding drum (4-2) is supported on a right vertical plate (4-1-1) of the winding drum support (4-1) through a winding drum supporting shaft (4-3), the left end of the winding drum (4-2) is supported on a left vertical plate (4-1-2) of the winding drum support (4-1) through a speed reducer (4-4) embedded in an inner cavity of the winding drum, and the speed reducer (4-4) is connected with a power unit (4-5) through a coupling I (4-6) with a brake disc, a connecting shaft (4-13) and a coupling II (4-14); brakes (4-7) are respectively arranged on power unit output shafts and speed reducer input shafts which are positioned on two sides of the coupler I (4-6), the outer end face of the drum support shaft (4-3) is connected with a limit switch (4-8), a pin hole plate (4-9) extending horizontally is fixed on the upper part of the same side of the right vertical plate (4-1-1) and the left vertical plate (4-1-2), and a flange plate (4-10) with a bolt hole is fixed on the lower part of the same side;

the lifting beam (3) is of a box-shaped beam structure, the upper flange is of a rectangular section, and the lower flange is of a trapezoidal plate-shaped structure formed by extending the middle parts of two side webs (3-1) downwards; a pin plate (3-2) matched with the pin hole plate (4-9) is arranged at the corresponding part of the upper flange of the web plate (3-1), a flange hole plate (3-3) matched with the flange plate (4-10) is arranged at the web plate (3-1), and a shaft hole (3-4) for mounting a fixed pulley wheel shaft is processed at the corresponding part of the lower flange of the web plate (3-1);

the pulley block hoisting system (5) is composed of a fixed pulley block (5-1), a fixed pulley wheel shaft (5-2), a movable pulley block (5-3), a movable pulley wheel shaft (5-4), a steel wire rope (5-5) and a hook accessory (5-6), wherein the fixed pulley block (5-1) is hung on the corresponding part of the lower flange of a web plate (3-1) of the lifting beam (3) through the fixed pulley wheel shaft (5-2), the movable pulley block (5-3) is hung below the fixed pulley block (5-1) through the steel wire rope (5-5), and the hook accessory (5-6) is hung below the movable pulley block (5-3).

2. The hoisting trolley suitable for the large bridge crane according to claim 1, wherein: the cross hinge shaft box (1-2) is of a square box structure, transverse shaft mounting holes are symmetrically formed in the left side face and the right side face of the cross hinge shaft box (1-2), longitudinal shaft mounting holes are symmetrically formed in the front end face and the rear end face of the cross hinge shaft box (1-2), and the longitudinal shaft mounting holes are perpendicular to each other in the horizontal direction.

3. The hoisting trolley suitable for the large bridge crane according to claim 1, wherein: the driving shaft (1-7) is of a structure that a shaft end cover and a cantilever extension shaft are added, and a matching hole for installing a shear screw (1-9) is processed at the outer edge of the shaft end cover part.

4. The hoisting trolley suitable for the large bridge crane according to claim 1, wherein: the support (1-5) is composed of a horizontal flange plate (1-5-1) and a vertical positioning rib plate (1-5-2), a positioning hole sleeved with a longitudinal shaft (1-4) is machined in the vertical positioning rib plate (1-5-2), and a connecting hole for fixing the connecting beam (2) is machined in the horizontal flange plate (1-5-1).

5. The hoisting trolley suitable for the large bridge crane according to claim 1, wherein: the driving devices (1-8) are three-in-one driving devices integrating a motor, a brake and a speed reducer.

6. The hoisting trolley suitable for the large bridge crane according to claim 1, wherein: the double guide rails (7) are laid at the corresponding positions of webs on two sides of the main beam (6).

7. The hoisting trolley suitable for the large bridge crane according to claim 1, wherein: the bottom of the brake (4-7) is supported on a base (4-12), and the right end of the base (4-12) is fixed on the outer end face of a left vertical plate (4-1-2) of the winding drum support.

8. The hoisting trolley suitable for the large bridge crane according to claim 1, wherein: and a brake cover (4-11) is arranged on the periphery of the brake (4-7).

9. The hoisting trolley suitable for the large bridge crane according to claim 1, wherein: the speed reducer (4-4) is a planetary speed reducer.

Technical Field

The invention belongs to the technical field of hoisting machinery, and particularly relates to a hoisting trolley suitable for a large bridge crane.

Background

The bridge crane is a hoisting device widely applied in the hoisting machinery industry, and is mainly used for equipment installation, hoisting and equipment assembly work of factory workshops, power station plants and engineering construction. The general trolley structure of the lifting trolley in the traditional large bridge crane is shown in figures 1, 2 and 3: the traditional hoisting mechanism (4 ') is located on a traditional trolley frame (8'), the traditional trolley frame (8 ') is supported on a traditional walking trolley (1'), the traditional trolley frame (8 ') is of an integral welding structure, the size of the traditional trolley frame (8') of the large bridge crane is often out of limit, and difficulty is brought to transportation.

Meanwhile, with the increase of large-scale engineering construction projects and the promotion of international construction in China, the demand of large-scale bridge cranes at home and abroad is gradually increasing. The existing large bridge crane has the problems of long production period, non-uniform technical specification and large performance difference. In order to solve the technical problems, important parts of the bridge crane, such as a hoisting mechanism and a traveling mechanism, need to be designed, processed and assembled in a modularized manner, so that the bridge crane can be quickly and flexibly assembled into bridge cranes with different models and hoisting ranges, the application range of the bridge crane is expanded, and the production cost is reduced.

Disclosure of Invention

The invention aims to provide the modular lifting trolley which is suitable for the large bridge crane aiming at the defects in the prior art. The invention carries out modularized processing on the hoisting mechanism, adopts a double-track form, improves the stress of the main beam, has reasonable stress, quick positioning, convenient installation and convenient modularized manufacture, and simultaneously greatly reduces the height and the dead weight. The invention carries out modular processing on the travelling mechanism trolley, utilizes the increase and decrease of the hoisting mechanism module and the rapid assembly of the hoisting beam, can be flexibly assembled into bridge cranes with different models and hoisting ranges, enlarges the application range of the bridge cranes and reduces the production cost.

The object of the invention can be achieved by the following technical measures:

the invention relates to a lifting trolley suitable for a large bridge crane, which comprises four travelling mechanism trolley modules symmetrically arranged on two main beams, two connecting beams lapped on the front and rear travelling mechanism trolley modules on the same side, and a lifting beam transversely lapped on the middle top of the two connecting beams (the two connecting beams and the lifting beam form an installation framework of the invention, the four travelling mechanism trolley modules are connected into a whole through the installation framework to form a complete travelling trolley), a plurality of lifting mechanism modules hung on the two sides of the lifting beam, and a pulley block lifting system hung on the lower part of the lifting beam (the lifting beam in the installation framework is also an installation foundation of the lifting mechanism modules and the pulley block lifting system);

the walking mechanism trolley module comprises a cross hinge shaft box internally provided with a transverse shaft and a longitudinal shaft, a driven wheel set and a driving wheel set which are arranged at two outer extending ends of the transverse shaft in a penetrating way, are positioned at the left side and the right side of the cross hinge shaft box and are respectively supported on a double guide rail (the driven wheel set, the cross hinge shaft box and the driving wheel set are arranged on the transverse shaft in a penetrating way in a side-by-side way, the whole height of the trolley is also greatly reduced, the stress of a main beam is improved by adopting a double-rail way, a web structure of the main beam does not need to bear additional torque, a cross hinge shaft box structure with simple structure and reasonable stress can be adopted between the two wheel sets in a double-rail structural mode, the size and the self weight are greatly reduced compared with the traditional trolley frame, the modular manufacture is also convenient), a driving shaft arranged at the outer side end of the driving, the motion power is provided for the main motor car wheel set through the driving shaft), and the support which is positioned through the longitudinal shaft and fixed above the cross-hinged shaft box (only the front end and the rear end of the connecting beam are respectively connected with the supports on the corresponding longitudinal beams in the front trolley module and the rear trolley module, so that the one-side quick assembly of the lifting trolley can be realized; the complete travelling trolley in the lifting trolley is formed by lapping the lifting beams between the two connecting beams, the correct positions of all travelling wheels in the four groups of travelling mechanism trolley modules are quickly ensured, the trouble of manually adjusting the verticality back and forth is eliminated, and quick positioning and quick installation are realized; the transverse shaft and the longitudinal shaft are vertically and crossly arranged in the horizontal direction (the transverse shaft and the longitudinal shaft are mutually vertical, the transverse shaft is perpendicular to the guide rail, the longitudinal shaft is parallel to the guide rail, and the support is positioned by the longitudinal shaft, so that after the support is connected through the connecting beams, the traveling wheels in the front and rear traveling mechanism trolley modules realize quick self-positioning, the two connecting beams also realize quick self-positioning through the traveling wheels in the four traveling mechanism trolley modules after the connecting beams are lapped and connected through the lifting beams), the distance between the two axes is smaller than the sum of the radiuses of the transverse shaft and the longitudinal shaft (namely the transverse shaft and the transverse shaft have a cross superposition part), and an arc-shaped groove for clamping and embedding the longitudinal shaft is processed on the transverse shaft (the longitudinal shaft is clamped and embedded in the;

the hoisting mechanism module comprises a winding drum support and a winding drum (the winding drum is used for winding a hoisting steel wire rope, the winding drum support is an installation base of the winding drum), the right end of the winding drum is supported on a right vertical plate of the winding drum support through a winding drum supporting shaft, the left end of the winding drum is supported on a left vertical plate of the winding drum support through a speed reducer embedded in an inner cavity of the winding drum (two ends of the winding drum are erected on vertical plates at two ends of the winding drum support, the winding drum and the speed reducer rotate synchronously, the speed reducer is arranged in the inner cavity of the winding drum, the structure is compact, the installation space is greatly saved), the speed reducer and a power unit are, the coupling II is connected (the connecting shaft and the coupling are connected by a spline and can slightly stretch out and draw back, so that the stress deformation of the structure does not influence the transmission of power, and the power output by the power unit is transmitted to the winding drum through the speed reducer); brakes (used for controlling the power unit output shaft, the speed reducer input shaft and the winding drum to stop rotating and further realizing the stop lifting or stop lifting of the steel wire rope in the height direction) are respectively arranged on the power unit output shaft and the speed reducer input shaft which are positioned on two sides of the coupler I, a limit switch is connected to the outer end face of the winding drum support shaft (the limit switch performs limit position setting in the field, when the lifting hook accessory is lifted to the maximum height, the limit switch acts to stop rotating the winding drum and stop lifting the lifting hook accessory, when the lifting hook accessory is lowered to the state that only the last 3 rings of safety rings are left after rope releasing of the winding drum, the limit switch acts to stop rotating the winding drum and stop lifting hook accessory descending), pin hole plates with horizontal extension are fixed on the upper portions of the same sides of the right vertical plate and the left vertical plate (after a pin shaft is threaded, the quick positioning of the lifting mechanism module and the lifting beam can be realized), and flange plates Quick connect and secure);

the lifting beam is of a box-shaped beam structure, the upper flange is of a rectangular section, and the lower flange is of a trapezoidal plate-shaped structure formed by downwards extending the middle parts of two side webs; a pin plate matched with the pin hole plate is arranged at the part corresponding to the upper flange of the web plate (the quick positioning of the hoisting mechanism module and the lifting beam can be realized after the pin shaft is penetrated and installed), a flange hole plate matched with the flange plate is arranged at the web plate (the quick connection and fixation of the hoisting mechanism module and the lifting beam can be realized after the bolt is penetrated and installed), and a shaft hole for penetrating and installing a fixed pulley shaft is processed at the part corresponding to the lower flange of the web plate (the fixed pulley block can be hung and installed at the lower part of the lifting beam through the fixed pulley shaft);

the pulley block hoisting system comprises a fixed pulley block, a fixed pulley wheel shaft, a movable pulley block, a movable pulley wheel shaft, a steel wire rope and a hook accessory, wherein the fixed pulley block is hung on the part corresponding to the lower flange of the web plate of the hoisting beam through the fixed pulley wheel shaft, the movable pulley block is hung below the fixed pulley block through the steel wire rope, and the hook accessory is hung below the movable pulley block.

The cross-shaped hinge shaft box is of a square box structure, transverse shaft mounting holes are symmetrically formed in the left side surface and the right side surface of the cross-shaped hinge shaft box respectively, longitudinal shaft mounting holes are symmetrically formed in the front end surface and the rear end surface of the cross-shaped hinge shaft box respectively, and the longitudinal shaft mounting holes are perpendicular to each other in the horizontal direction (the longitudinal shaft and the transverse shaft are guaranteed to be perpendicular to each other and overlapped in a crossed mode).

The driving shaft is in a structure of adding a cantilever extending shaft to the end cover of the shaft end, and a matching hole for installing a shear screw is processed at the outer edge of the end cover part of the shaft end.

The support is composed of a horizontal flange plate and a vertical positioning rib plate, a positioning hole sleeved with a longitudinal shaft is formed in the vertical positioning rib plate (the support is positioned by the longitudinal shaft which is parallel to a guide rail, after the support is connected through a connecting beam, travelling wheels in front and rear groups of travelling mechanism trolley modules realize quick self-positioning), and a connecting hole for fixing the connecting beam is formed in the horizontal flange plate (after a bolt is penetrated, the connecting beam can be connected with the support).

The driving device is a three-in-one driving device integrating a motor, a brake and a speed reducer.

The double guide rails are laid at the corresponding positions of webs at two sides of the main beam (the stress of the main beam is improved in a double-rail mode, the web structure of the main beam does not need to bear additional torque, a cross-shaped hinge axle box structure with simple structure and reasonable stress can be adopted between the two wheel sets in a double-rail structural mode, and compared with the traditional bogie frame, the double-rail bogie frame greatly reduces the volume and the self weight and is convenient for modularized manufacture).

The bottom of the brake is supported on the base, and the right end of the base is fixed on the outer end face of the left vertical plate of the winding drum support (the base and the winding drum support are combined into a whole to form an integral installation base).

The periphery of the brake is provided with a brake cover (having the functions of dust prevention, safety and beauty).

The speed reducer is a planetary speed reducer.

The design principle of the invention is as follows:

the invention carries out modular processing on the hoisting mechanism, adopts a double-track form, improves the stress of the main beam, has reasonable stress, quick positioning, convenient installation and convenient modular manufacture, and simultaneously greatly reduces the height and lightens the self weight; the invention carries out modular processing on the travelling mechanism trolley, utilizes the increase and decrease of the hoisting mechanism module and the rapid assembly of the hoisting beam, can be flexibly assembled into bridge cranes with different models and hoisting ranges, enlarges the application range of the bridge cranes and reduces the production cost; meanwhile, the invention has no integral frame, and the installation framework of the invention is formed by the connecting beam of the overlapping travelling mechanism trolley module and the lifting beam of the hanging lifting mechanism module, thereby reducing the transportation size, and having compact structure, light weight and large installation space.

More specifically, the stress of the main beam is improved by adopting a double-rail form, a web plate structure of the main beam does not need to bear additional torque, a cross-shaped hinge axle box structure with simple structure and reasonable stress can be adopted between two wheel sets in the double-rail structural form, and compared with the traditional bogie frame, the double-rail bogie greatly reduces the volume and the dead weight and is convenient for modularized manufacture; meanwhile, the cross hinge shaft box and the two traveling wheels are arranged on the cross shaft in a penetrating way in parallel, so that the overall height of the trolley is greatly reduced; in addition, because the transverse shaft and the longitudinal shaft which are arranged in the cross hinge shaft box are mutually vertical, the correct positions of the four travelling wheels in the two groups of travelling mechanism trolley modules which are connected by each longitudinal shaft are quickly determined, the quick assembly can be realized only by lapping the connecting beams on the opposite supports, the trouble of manually adjusting the verticality back and forth is eliminated, and the quick positioning and the quick installation are realized.

The hoisting mechanism module also has no frame part, a winding drum bracket (6) with a U-shaped frame structure is directly used as an installation foundation of the winding drum, and the speed reducer is embedded in the inner cavity of the winding drum, so that the whole structure is compact, and the installation space is saved to the maximum extent; meanwhile, the rapid positioning of the hoisting mechanism module and the hoisting beam is realized through the matching of a pin hole plate fixed on the upper part of the same side of the winding drum bracket and a pin shaft; through the matching of the flange plate at the lower part of the same side of the winding drum support and the bolt, the quick connection and fixation of the hoisting mechanism module and the hoisting beam are realized. The bridge crane with different models and hoisting ranges can be flexibly assembled by increasing and decreasing the hoisting mechanism modules and quickly assembling the hoisting beams: for example, the lifting capacity of one lifting mechanism module is 100t, and when the lifting mechanism module is quickly assembled on a lifting beam, a bridge crane with the load of 100t is formed; when two hoisting mechanism modules are quickly assembled on the hoisting beam, a bridge crane with a load of 200 t is formed; when three hoisting mechanism modules are quickly assembled on the hoisting beam, a bridge crane with the load of 300 t is formed; when four hoisting mechanism modules are quickly assembled on the hoisting beam, a bridge crane with the load of 400 t is formed.

The invention has the following beneficial effects:

the invention carries out modular processing on the hoisting mechanism, adopts a double-track form, improves the stress of the main beam, has reasonable stress, quick positioning, convenient installation and convenient modular manufacture, and simultaneously greatly reduces the height and lightens the self weight; the invention carries out modular processing on the travelling mechanism trolley, utilizes the increase and decrease of the hoisting mechanism module and the rapid assembly of the hoisting beam, can be flexibly assembled into bridge cranes with different models and hoisting ranges, enlarges the application range of the bridge cranes and reduces the production cost; meanwhile, the invention has no integral frame, and the installation framework of the invention is formed by the connecting beam of the overlapping travelling mechanism trolley module and the lifting beam of the hanging lifting mechanism module, thereby reducing the transportation size, and having compact structure, light weight and large installation space.

Drawings

Fig. 1 is a structural schematic diagram of a lifting trolley of a conventional large bridge crane.

Fig. 2 is a top view of fig. 1.

Fig. 3 is a left side view of fig. 1.

The reference numerals in fig. 1 to 3 indicate: 1 ', a traditional walking trolley, 4', a traditional hoisting mechanism, 7 ', a single guide rail, 8' and a traditional trolley frame.

Fig. 4 is a schematic structural diagram of the present invention.

Fig. 5 is a top view of fig. 4.

Fig. 6 is a left side view of fig. 4.

Fig. 7 is a partial enlarged view of the point i in fig. 4.

Fig. 8 is a schematic structural view of a hoist module according to the present invention.

Fig. 9 is a left side view of fig. 8.

Fig. 10 is a schematic structural view of the traveling mechanism cart module according to the present invention.

Fig. 11 is a schematic view of the mounting of a set of hoist modules to a tie beam.

Fig. 12 is a schematic view of the two sets of hoisting mechanism modules assembled with the connecting beam.

Fig. 13 is an installation schematic diagram of four groups of hoisting mechanism modules and connecting beams during assembly.

The sequence numbers in the figures illustrate: 1. 1-1 part of a travelling mechanism trolley module, 1-1 part of a driven wheel group, 1-2 parts of a cross hinge shaft box, 1-3 parts of a transverse shaft, 1-4 parts of a longitudinal shaft, 1-5 parts of a support, 1-5-1 parts of a horizontal flange plate, 1-5-2 parts of a vertical positioning rib plate, 1-6 parts of a driving wheel group, 1-7 parts of a driving shaft, 1-8 parts of a driving device, 1-9 parts of a shearing-resistant screw, 2 parts of a connecting beam, 3 parts of a lifting beam, 3-1 parts of a web plate, 3-2 parts of a pin plate, 3-3 parts of a flange hole plate, 3-4 parts of a shaft hole, 4 parts of a lifting mechanism module, 4-1 part of a winding drum support, 4-1 parts of a right vertical plate, 4-1-2 parts of a left vertical plate, 4-2 parts of a winding, 4-4 parts of speed reducer, 4-5 parts of power unit, 4-6 parts of coupler, 4-7 parts of brake, 4-8 parts of limit switch, 4-9 parts of pin hole plate, 4-10 parts of flange plate, 4-11 parts of brake cover, 4-12 parts of base, 4-13 parts of connecting shaft, 4-14 parts of coupler, 5 parts of pulley block hoisting system, 5-1 parts of fixed pulley block, 5-2 parts of fixed pulley wheel shaft, 5-3 parts of movable pulley block, 5-4 parts of movable pulley wheel shaft, 5-5 parts of steel wire rope, 5-6 parts of hook accessory, 6 parts of main beam, 7 parts of double guide rail.

Detailed Description

The invention will be further described with reference to the accompanying drawings:

as shown in fig. 4-13, the lifting trolley suitable for large bridge crane of the invention comprises four travelling mechanism trolley modules (1) symmetrically arranged on two main beams (6), two connecting beams (2) lapped above the front and rear travelling mechanism trolley modules at the same side, and a lifting beam (3) transversely lapped above the middle top of the two connecting beams (2) (the two connecting beams (2) and the lifting beam (3) form the mounting framework of the invention, the four travelling mechanism trolley modules are connected into a whole through the mounting framework to form a complete travelling trolley), a plurality of hoisting mechanism modules (4) hung on two sides of the hoisting beam (3), and a pulley block hoisting system (5) hung on the lower part of the hoisting beam (3) (the hoisting beam (3) in the installation framework is also an installation foundation of the hoisting mechanism modules (4) and the pulley block hoisting system (5));

the travelling mechanism trolley module (1) comprises a cross hinge shaft box (1-2) internally provided with a transverse shaft (1-3) and a longitudinal shaft (1-4), a driven wheel set (1-1) and a driving wheel set (1-6) (the driven wheel set (1-1), the cross hinge shaft box (1-2) and the driving wheel set (1-6) are arranged at two outer extending ends of the transverse shaft (1-3) in a penetrating mode, positioned at the left side and the right side of the cross hinge shaft box (1-2) and respectively supported on a double guide rail (7) and penetrate through the transverse shaft in a side-by-side mode, the overall height of the trolley is greatly reduced, the stress of a main beam (6) is improved in a double-rail mode, a web plate structure of the main beam (6) does not need to bear additional torque, and a double-rail structural mode can be adopted between the two wheel sets, Compared with the traditional trolley frame, the cross hinge axle box structure with reasonable stress greatly reduces the volume and the dead weight, is convenient for modularized manufacture, a driving shaft (1-7) arranged at the outer side end of the main wheel set (1-6) in a cantilever mode, a driving device (1-8) arranged on the driving shaft (1-7) (the driving device (1-8) provides motion power, and the motion power is provided for the main wheel set (1-6) through the driving shaft (1-7)), the supports (1-5) are positioned through the longitudinal shafts (1-4) and fixed above the cross-hinged shaft boxes (1-2) (only the front ends and the rear ends of the connecting beams (2) are respectively connected with the supports (1-5) on the corresponding longitudinal beams in the front trolley module and the rear trolley module, and then the single-side quick assembly of the lifting trolley can be realized; a complete travelling trolley in the lifting trolley is formed by lapping the lifting beams (3) between the two connecting beams (2), the correct positions of all travelling wheels in the four groups of travelling mechanism trolley modules are quickly ensured, the trouble of manually adjusting the verticality back and forth is eliminated, and quick positioning and quick installation are realized; the transverse shafts (1-3) and the longitudinal shafts (1-4) are vertically crossed in the horizontal direction (the transverse shafts (1-3) and the longitudinal shafts (1-4) are mutually vertical, the transverse shafts (1-3) are vertical to the guide rails, the longitudinal shafts (1-4) are parallel to the guide rails, the support seats (1-5) are positioned by the longitudinal shafts (1-4), so that after the support seats (1-5) are connected through the connecting beams (2), the travelling wheels in the front and rear travelling mechanism trolley modules realize quick self-positioning, the two connecting beams (2) realize quick self-positioning through the travelling wheels in the four travelling mechanism trolley modules after the lifting beams (3) are lapped, the distance between the two axes is smaller than the sum of the radiuses of the transverse shafts (1-3) and the longitudinal shafts (1-4) (namely, the longitudinal shafts (1-4) and the transverse shafts (1-3) have crossed and overlapped parts), arc-shaped grooves for clamping and embedding the longitudinal shafts (1-4) are processed on the transverse shafts (1-3) (the longitudinal shafts (1-4) are clamped and embedded in the grooves of the transverse shafts (1-3) to ensure that the transverse shafts (1-3) cannot rotate and move left and right);

the hoisting mechanism module (4) comprises a winding drum support (4-1) of a U-shaped frame structure and a winding drum (4-2) (the winding drum (4-2) is used for winding a hoisting steel wire rope, the winding drum support (4-1) is an installation foundation of the winding drum (4-2), the right end of the winding drum (4-2) is supported on a right vertical plate (4-1-1) of the winding drum support (4-1) through a winding drum supporting shaft (4-3), the left end of the winding drum (4-2) is supported on a left vertical plate (4-1-2) of the winding drum support (4-1) through a speed reducer (4-4) embedded in an inner cavity of the winding drum (4-2) (two ends of the winding drum (4-2) are erected on vertical plates at two ends of the winding drum support (4-1), the winding drum (4-2) and the speed reducer (4-4) rotate synchronously, and the speed reducer (4-4 ) In the inner cavity, the structure is compact, the installation space is greatly saved, the speed reducer (4-4) is connected with the power unit (4-5) through the coupling I (4-6) with the brake disc, the connecting shaft (4-13) and the coupling II (4-14) (the connecting shaft and the coupling adopt spline connection and can slightly stretch out and draw back, so that the stress deformation of the structure does not influence the transmission of power, and the power output by the power unit (4-5) is transmitted to the winding drum (4-2) through the speed reducer (4-4)); brakes (4-7) are respectively arranged on power unit output shafts and speed reducer input shafts which are positioned on two sides of a coupler I (4-6) and used for controlling the power unit output shafts, the speed reducer input shafts and a winding drum (4-2) to stop rotating so as to further realize the stop lifting or stop lifting of a steel wire rope (5-5) in the height direction, a limit switch (4-8) is connected to the outer end face of a winding drum support shaft (4-3) (the limit switch (4-8) sets the limit position on site, when a lifting hook accessory (5-6) is lifted to the maximum height, the limit switch (4-8) acts to stop rotating the winding drum (4-2) and stop lifting the lifting hook accessory (5-6), when the lifting hook accessory (5-6) is lowered to the winding drum (4-2) and only the last 3 rings of safety rings are left, the limiting switch (4-8) acts to stop the rotation of the winding drum (4-2) and stop the descending of the hook accessory (5-6), a pin hole plate (4-9) extending horizontally is fixed on the upper part of the same side of the right vertical plate (4-1-1) and the left vertical plate (4-1-2) (after the pin shaft is threaded, the quick positioning of the lifting mechanism module (4) and the lifting beam (3) can be realized), and a flange plate (4-10) with a bolt hole is fixed on the lower part of the same side (after the bolt is threaded), the quick connection and fixation of the lifting mechanism module (4) and the lifting beam (3) can be realized;

the lifting beam (3) is of a box-shaped beam structure, the upper flange is of a rectangular section, and the lower flange is of a trapezoidal plate-shaped structure formed by extending the middle parts of two side webs (3-1) downwards; a pin plate (3-2) matched with the pin hole plate (4-9) is arranged at the corresponding part of the upper flange of the web plate (3-1) (after the pin shaft is penetrated, the quick positioning of the hoisting mechanism module (4) and the lifting beam (3) can be realized), a flange hole plate (3-3) matched with the flange plate (4-10) is arranged at the web plate (3-1) (after the bolt is penetrated, the quick connection and fixation of the hoisting mechanism module (4) and the lifting beam (3) can be realized), and a shaft hole (3-4) for penetrating a fixed pulley shaft is processed at the corresponding part of the lower flange of the web plate (3-1) (the fixed pulley shaft (5-1) can be hung at the lower part of the lifting beam (3) through the fixed pulley shaft (5-2);

the pulley block hoisting system (5) is composed of a fixed pulley block (5-1), a fixed pulley wheel shaft (5-2), a movable pulley block (5-3), a movable pulley wheel shaft (5-4), a steel wire rope (5-5) and a hook accessory (5-6), wherein the fixed pulley block (5-1) is hung on the corresponding part of the lower flange of a web plate (3-1) of the lifting beam (3) through the fixed pulley wheel shaft (5-2), the movable pulley block (5-3) is hung below the fixed pulley block (5-1) through the steel wire rope (5-5), and the hook accessory (5-6) is hung below the movable pulley block (5-3).

The cross hinge shaft box (1-2) is of a square box structure, transverse shaft mounting holes are symmetrically formed in the left side surface and the right side surface of the cross hinge shaft box (1-2), longitudinal shaft mounting holes are symmetrically formed in the front end surface and the rear end surface of the cross hinge shaft box (1-2), and the longitudinal shaft mounting holes are perpendicular to each other in the horizontal direction (the longitudinal shaft (1-4) and the transverse shaft (1-3) are guaranteed to be perpendicular to each other horizontally and overlapped in a crossed mode).

The driving shaft (1-7) is in a structure of a shaft end cover and a cantilever extension shaft, and a matching hole for installing a shear screw (1-9) is processed at the outer edge of the shaft end cover part.

The support (1-5) is composed of a horizontal flange plate (1-5-1) and a vertical positioning rib plate (1-5-2), positioning holes sleeved with longitudinal shafts (1-4) are machined in the vertical positioning rib plate (1-5-2) (the support (1-5) is positioned by the longitudinal shafts (1-4), the longitudinal shafts (1-4) are parallel to guide rails, walking wheels in the front and rear walking mechanism trolley modules realize quick self-positioning after the support is connected through a connecting beam (2), and the connecting beam (2) and the support (1-5) can be connected after a connecting hole for fixing the connecting beam (2) is machined in the horizontal flange plate (1-5-1) (a bolt is arranged in the connecting hole in the horizontal flange plate in a penetrating mode).

The driving devices (1-8) are three-in-one driving devices integrating a motor, a brake and a speed reducer.

The double guide rails (7) are laid at the corresponding positions of webs on two sides of the main beam (6) (the stress of the main beam (6) is improved by adopting a double-rail mode, the web structure of the main beam (6) does not need to bear additional torque, a cross-shaped hinge axle box structure with a simple structure and reasonable stress can be adopted between the two wheel sets in the double-rail structural mode, and compared with the traditional bogie frame, the double-rail bogie frame greatly reduces the volume and the dead weight and is convenient for modularized manufacture).

The bottom of the brake (4-7) is supported on the base (4-12), and the right end of the base (4-12) is fixed on the outer end face of the left vertical plate (4-1-2) of the winding drum support (the base (4-12) and the winding drum support (4-1) are combined into a whole to form an integral installation foundation).

In the invention, the periphery of the brake (4-7) is provided with a brake cover (4-11) (having the functions of dust prevention, safety and beauty).

The speed reducer (4-4) is a planetary speed reducer.

The specific use cases of the invention are as follows:

firstly, respectively assembling four sets of travelling mechanism trolley modules and a plurality of sets of hoisting mechanism modules according to the structural description and the actual requirements; then, two sets of walking mechanism trolley modules (1) are respectively and symmetrically arranged on the front and the back of the two main beams (6); then, the front and rear sets of travelling mechanism trolley modules (1) are respectively lapped into a whole through two connecting beams (2), namely bolts are arranged on connecting plates at the bottoms of the supports (1-5) and the connecting beams (2) in a penetrating manner; then, mounting the fixed pulley block (5-1) on the lifting beam (3), and transversely lapping the lifting beam (3) above the middle tops of the two connecting beams (2); then, hanging a required number of hoisting mechanism modules on two sides of the hoisting beam (3) to assemble a bridge crane with a required model and a hoisting range; and finally, hanging other parts of the pulley block hoisting system (5) at the lower part of the hoisting beam (3) through a fixed pulley block (5-1). Therefore, the lifting device is quickly assembled, can move to a position needing to be lifted along the double guide rails (7) according to needs, starts the power unit (4-5), drives the winding drum (4-2) to rotate, simultaneously winds the steel wire ropes (5-5) on the winding drum (4-2), the fixed pulley block (5-1) and the movable pulley block (5-3) to rotate, drives the movable pulley block (5-3) to lift up and down through the hook accessories (5-6) and a lifting object, and further lifts to the required position.