阅读说明：本技术 轨道大吨位起吊设备专用机组 (Special machine set for large-tonnage rail hoisting equipment ) 是由 王育凯 张大祥 张文辉 李国栋 张子豪 王罡 解正国 刘学文 何弦 于 2021-08-11 设计创作，主要内容包括：本发明公开一种轨道大吨位起吊设备专用机组,其包括吊机,以及均能够沿铁道线路的轨道运动的火车头、第一平车和用于承载大吨位部件的载货平车；其中,第一平车设有两台,且分别连接在载货平车的两端,每台第一平车上单独设有至少一台吊机；且其中一台第一平车的背离载货平车的端部与火车头连接。使用该轨道大吨位起吊设备专用机组可以通过火车头将吊机和载货平车运送至施工处,使得吊机在进行大吨位部件的吊运时无需跨越接触网,也无需将接触网拆除,仅需要在铁路天窗进行施工即可,在保证铁路运营线路及旅客的人身安全,能够保证铁道线路运行的顺畅和提高施工供给效率。(The invention discloses a special machine set for a large-tonnage rail hoisting device, which comprises a crane, a locomotive, a first flat car and a cargo flat car, wherein the locomotive, the first flat car and the cargo flat car are all capable of moving along a rail of a railway line; the first flatcar is provided with two flatcars which are respectively connected with two ends of the loading flatcar, and each first flatcar is independently provided with at least one crane; and the end of one of the first flatcars, which end faces away from the loading flatcar, is connected to the locomotive. The special machine set for the large-tonnage rail hoisting equipment can convey the crane and the cargo carrying flat car to the construction position through the locomotive, so that the crane does not need to cross over a contact network when hoisting large-tonnage parts, does not need to dismantle the contact network, and only needs to be constructed in a railway skylight, thereby ensuring the personal safety of railway operation lines and passengers, and ensuring the smooth operation of the railway lines and improving the construction supply efficiency.)

1. The special machine set for the rail large-tonnage hoisting equipment is characterized by comprising a crane, a locomotive, a first flat car and a cargo flat car, wherein the locomotive, the first flat car and the cargo flat car are all capable of moving along a rail of a railway line; wherein the content of the first and second substances,

the first flatcar is provided with two flatcars which are respectively connected with two ends of the cargo flatcar, and each first flatcar is independently provided with at least one crane;

and the end of one of the first flatcars facing away from the loading flatcar is connected to the locomotive.

2. The special unit for the large-tonnage rail hoisting equipment according to claim 1, further comprising at least one of an internal combustion hydraulic pump station, a hydraulic control system and a counterweight block, wherein each first flat car is separately provided with the at least one of the internal combustion hydraulic pump station and the counterweight block.

3. The special unit for the large-tonnage rail hoisting equipment according to claim 2, wherein the first flatcar is detachably connected with a crane arranged on the first flatcar, and the crane is a folding-arm crane or a straight-arm crane.

4. The special unit for the large-tonnage rail hoisting equipment according to claim 3, wherein the first platform wagon is detachably connected with a crane arranged on the first platform wagon through a nondestructive installation device; wherein the content of the first and second substances,

the nondestructive mounting device includes:

a first mounting bracket;

the first quick locking mechanism is arranged on the first mounting frame and used for quickly locking the first mounting frame on the body of the first flat wagon;

and the first flange is used for pressing the base of the crane on the first mounting frame.

5. The special machine set for the large-tonnage rail hoisting equipment according to claim 4, wherein the first quick locking mechanism comprises a first screw, a first locking block, a pressing block, a second screw, a first nut and a second nut;

the first screw, the second screw, the first nut and the second nut are at least one, the first mounting frame is connected with the first locking block through the first screw and the first nut, the first locking block is connected with the pressing block through the second screw and the second nut, and the body of the first flatcar is arranged between the first locking block and the pressing block.

6. The special machine set for the large-tonnage rail hoisting equipment according to claim 4, further comprising:

the first moving structure is arranged on the first mounting rack and can move in the horizontal plane along the extending direction vertical to the track;

the second moving structure is arranged on the first moving structure, can move along the vertical direction and has a locking function, and the support legs are arranged on the second moving structure; or

And the support leg is arranged on the first moving structure in a manner of rotating around the moving direction of the first moving structure and has a locking function.

7. The special machine set for the large-tonnage rail hoisting equipment according to any one of claims 1 to 6, wherein the first platform vehicle is provided with auxiliary hydraulic legs which can be detachably connected with the rail.

8. The special unit for large-tonnage rail hoisting equipment according to claim 7, wherein the auxiliary hydraulic leg comprises:

the second hydraulic cylinder is arranged on the body of the first flat car along the vertical direction;

and the guide limiting structure is arranged on the second hydraulic cylinder and can be detachably clamped on the track.

9. The special machine set for large-tonnage rail hoisting equipment according to claim 8, wherein the guiding and limiting structure comprises:

the third mounting frame is arranged on a piston rod of the second hydraulic cylinder;

the sliding rail is arranged on the third mounting rack and is arranged in the horizontal plane along the extending direction X vertical to the track;

the clamping heads can be movably arranged on the sliding rail along the sliding rail, each group of clamping heads comprises two rail grasping clamping tongs, grooves matched with the tops of the rails are formed in the rail grasping clamping tongs, and the grooves of the two rail grasping clamping tongs in each group of clamping heads are oppositely arranged;

and a fifth screw and a fifth nut which connect the two rail grasping clamps in each group of clamping heads.

10. The special unit for the large-tonnage rail hoisting equipment according to claim 8, wherein the auxiliary hydraulic leg further comprises a second mounting frame and a second quick locking mechanism; wherein the content of the first and second substances,

the second quick locking mechanism is arranged on the second mounting frame and can be quickly locked on the body of the first flat car, and the second hydraulic cylinder sequentially passes through the second mounting frame and the second quick locking mechanism and is connected with the body of the first flat car.

Technical Field

The invention relates to large-tonnage hoisting equipment for a track line, in particular to a special unit for the large-tonnage hoisting equipment for the track.

Background

In the field construction process, the parts with larger tonnage are generally constructed by truck cranes or other large-scale machinery entering the field.

However, for the operation on the railway line, the railway line contains a large number of rails, overhead lines and existing equipment, and the condition of truck cranes or other large-scale machinery entering construction operation is not met; moreover, in order to ensure the personal safety of railway line equipment and passengers, the operation of hoisting parts across overhead lines is absolutely forbidden. Therefore, how to hoist large-tonnage components (such as D-shaped construction temporary beams, longitudinal beams and transverse beams and the like) under the condition of avoiding influencing the personal safety of railway operation lines and passengers is a problem to be solved urgently during railway line construction.

Disclosure of Invention

In order to solve the problem that large-tonnage parts cannot be hoisted under the condition of not influencing railway operation lines and passenger safety during railway line construction, the invention provides a special machine set for large-tonnage rail hoisting equipment according to one aspect of the invention.

The special machine set for the large-tonnage rail hoisting equipment comprises a crane, a locomotive, a first flat car and a cargo flat car, wherein the locomotive, the first flat car and the cargo flat car can move along the rail of a railway line; the first flatcar is provided with two flatcars which are respectively connected with two ends of the loading flatcar, and each first flatcar is independently provided with at least one crane; and the end of one of the first flatcars, which end faces away from the loading flatcar, is connected to the locomotive.

Therefore, when a large-tonnage part needs to be hoisted during construction on a railway line, the locomotive can drive the first flat wagon carrying the crane to move to a construction position along the track of the railway line, and the cargo carrying flat wagon can carry the large-tonnage part needing to be hoisted to the construction position and can also be used for carrying the large-tonnage part hoisted from the construction position. The special machine set for the large-tonnage rail hoisting equipment can convey the crane and the cargo carrying flat car to the construction position through the locomotive, so that the crane does not need to cross over a contact network when hoisting large-tonnage parts, does not need to dismantle the contact network, and only needs to be constructed in a railway skylight, thereby ensuring the personal safety of railway operation lines and passengers, and ensuring the smooth operation of the railway lines and improving the construction supply efficiency. The large-tonnage parts needing to be hoisted can be carried by the freight flat car, so that the large-tonnage parts are prevented from colliding with other equipment on the first flat car in the hoisting or transporting process; moreover, as the two ends of the freight flat car are respectively provided with the crane, when the length of the lifted part is longer, the part can be lifted together by the cranes at the two ends of the freight flat car so as to ensure the safety of the part lifting process.

In some embodiments, the special unit for the large-tonnage rail hoisting equipment further comprises at least one of an internal combustion hydraulic pump station, a hydraulic control system and a counterweight block, and each first flat car is separately provided with at least one of the internal combustion hydraulic pump station and the counterweight block. Therefore, the crane can be independently supplied with energy through the internal combustion hydraulic pump station and the hydraulic control system which are independently arranged on the platform car, so that the operation steps of separating and connecting the first platform car and the cargo platform car are simplified; and when the crane hoists the large-tonnage part, the stability of the body of the flat car can be ensured through the balancing weight.

In some embodiments, the first flatcar is detachably connected to a crane provided thereon, the crane being a folding arm crane or a straight arm crane.

In some embodiments, the first flatcar is removably connected to a crane provided thereon by a non-destructive mounting device; the nondestructive mounting device comprises a first mounting frame; the first quick locking mechanism is arranged on the first mounting frame and used for quickly locking the first mounting frame on the body of the first flat wagon; and a first flange for pressing the base of the crane against the first mounting bracket.

Therefore, the crane can be installed on the flat car without damage on the structure of the flat car; moreover, the installation process is convenient and fast.

In some embodiments, the first quick-lock mechanism comprises a first screw, a first lock block, a press block, a second screw, a first nut, and a second nut; wherein, first screw, second screw, first nut and second nut all are equipped with one at least, and first mounting bracket passes through with first locking piece first screw and first nut are connected, and first locking piece passes through second screw and second nut with the briquetting and is connected, and the automobile body of first flatcar arrange first locking piece in and with the briquetting between. Therefore, the first mounting frame and the first flat car can be quickly mounted and dismounted by adjusting the positions of the first nut and the second nut.

In some embodiments, the special machine set for the large-tonnage rail lifting equipment further comprises a first moving structure which is arranged on the first mounting frame and can move in the horizontal plane along the extending direction of the rail perpendicular to the railway line; the second moving structure is arranged on the first moving structure, can move along the vertical direction and has a locking function, and the support legs are arranged on the second moving structure; or a foot which is arranged on the first mobile structure and can rotate around the moving direction of the first mobile structure and has a locking function.

Therefore, when the locomotive drives the first flat car to move, the support legs can be driven to move upwards through the second moving structure, and the support legs are prevented from colliding with the ground when the first flat car moves; the second moving structure and the supporting feet can be driven by the first moving structure to move towards one side of the first flat wagon where the wagon body is located, so that the situation that the first flat wagon is blocked in the process of transporting the first flat wagon due to the fact that the second moving structure and the supporting feet exceed the range of the vehicle limit is avoided.

In some embodiments, the first flatcar is provided with auxiliary hydraulic legs that can be detachably connected to the rails. Therefore, when the crane is used for lifting heavy objects, the longitudinal stability of the flat car in the lifting process can be ensured through the auxiliary hydraulic support legs connected to the rails.

In some embodiments, the auxiliary hydraulic leg comprises a second hydraulic cylinder disposed in a vertical direction on a body of the first flatcar; and a guide limit structure which is arranged on the second hydraulic cylinder and can be detachably clamped on the track. From this, can adjust the position of direction limit structure in vertical direction through the second pneumatic cylinder, make it can with not co-altitude track block to increase the suitability of supplementary hydraulic leg.

In some embodiments, the guide limit structure comprises: the third mounting frame is arranged on the piston rod of the second hydraulic cylinder; the sliding rail is arranged on the third mounting rack and is arranged in the horizontal plane along the extending direction X vertical to the track; the clamping heads can be movably arranged on the slide rail along the slide rail, each group of clamping heads comprises two rail grabbing clamps, grooves matched with the tops of the rails are formed in the rail grabbing clamps, and the grooves of the two rail grabbing clamps in each group of clamping heads are oppositely arranged; and a fifth screw and a fifth nut which connect the two rail grasping clamps in each group of clamping heads. Therefore, the guide limiting structure can be quickly connected with and detached from the track by adjusting the position of the fifth nut.

In some embodiments, the auxiliary hydraulic leg further comprises a second mounting bracket and a second quick-lock mechanism; the second quick locking mechanism is arranged on the second mounting frame and can be used for quickly locking the second mounting frame on the body of the first flat car, and the second hydraulic cylinder is connected with the body of the first flat car through the second mounting frame and the second quick locking mechanism in sequence. Therefore, the auxiliary hydraulic support legs can be quickly connected with the body of the first flat car through the second quick locking mechanism.

Drawings

FIG. 1 is a schematic structural diagram of a special unit for a large-tonnage rail hoisting device according to an embodiment of the invention;

FIG. 2 is a schematic view of a folding arm crane mounted to the body of a first flatcar by a non-destructive mounting device in accordance with an embodiment of the present invention;

FIG. 3 is a schematic structural view of a nondestructive mounting apparatus provided with a first moving structure and a supporting foot according to an embodiment of the present invention;

FIG. 4 is a schematic view of the first movable structure of both sides of the nondestructive mounting apparatus of FIG. 3 provided with the first movable structure and the support foot in an extended state;

FIG. 5 is a schematic structural view of a first flatcar with auxiliary hydraulic legs according to an embodiment of the present invention;

FIG. 6 is a partial schematic illustration of another perspective view of the first flatcar of FIG. 5 with auxiliary hydraulic legs;

FIG. 7 is a schematic diagram of the construction of a second quick lock mechanism of the embodiment of FIG. 6;

FIG. 8 is a schematic structural view of a second quick lock mechanism of the alternate embodiment shown in FIG. 6;

reference numerals: 100. a track; 20. a locomotive; 30. a first flatcar; 31. folding arm hanging; 311. a rotating base; 312. a support arm; 313. a crank arm; 314. a telescopic arm; 315. a connecting portion; 32. a non-destructive mounting device; 321. a first mounting bracket; 322. a first quick locking mechanism; 3221. a first screw; 3222. a first locking block; 3223. a second screw; 3224. briquetting; 3225. a first nut; 3226. a second nut; 323. a first flange; 324. a first moving structure; 325. a support leg; 33. an internal combustion hydraulic pump station; 35. a balancing weight; 36. an auxiliary hydraulic leg; 361. a second hydraulic cylinder; 362. a guiding and limiting structure; 3621. a third mounting bracket; 3622. a slide rail; 3623. grabbing a rail clamp; 36231. a groove; 3624. a fifth screw; 3625. a fifth nut; 363. a second mounting bracket; 364. a second quick locking mechanism; 3641. a second locking block; 3642. a third screw; 3643. a third nut; 3644. a third locking block; 3635. a fourth screw; 3646. a fourth nut; 40. a cargo flat wagon.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

It is further noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element. The terms used herein are generally terms commonly used by those skilled in the art, and if they are inconsistent with such commonly used terms, the terms herein control.

In this context, the term "truck crane", also called mobile crane, refers to a crane mounted on a conventional vehicle chassis or a special vehicle chassis, the cab of which is located separately from the crane cab.

In this context, the term "catenary" refers to a high-voltage power transmission line installed in a zigzag manner above a rail for current collection from a pantograph in an electric railway.

In this context, the term "locomotive" refers to the locomotive of a locomotive running on a railroad track.

In this context, the term "flatcar" refers to a flatcar that travels on railroad track.

In this context, the term "railway skylight" refers to the time reserved and scheduled for operations such as construction and maintenance of business line driving equipment without drawing a train operation line or adjusting and drawing the train operation line in a train operation diagram. The construction skylight and the maintenance skylight are divided into a construction skylight and a maintenance skylight according to the purposes.

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Fig. 1 schematically shows a special unit for a rail large-tonnage lifting equipment according to a first embodiment of the invention. As shown in fig. 1, the special machine set for the large-tonnage rail lifting equipment comprises a crane, a locomotive 20, a first platform wagon 30 and a loading platform wagon 40, wherein the locomotive 20, the first platform wagon 30 and the loading platform wagon 40 are all capable of moving along a rail 100 of a railway line; wherein, the first platform vehicle 30 is provided with two platform vehicles which are respectively connected with two ends of the loading platform vehicle 40, and each first platform vehicle 30 is independently provided with at least one crane; and the end of one of the first carriages 30 facing away from the loading carriage 40 is connected to the locomotive 20. For example, the first flatcar 30 may be a model NX70 flatcar. As shown in fig. 1, the crane includes a swing base 311 mounted on the body of the first platform 30; a support arm 312 mounted on the swivel base 311; a crank arm 313 connected to the support arm 312 and a telescopic arm 314 connected to the crank arm 313; and a connecting portion 315 provided on the telescopic arm 314, and the connecting portion 315 may be a hook. Illustratively, the crane can adopt a folding arm crane 31 or a straight arm crane, for example, a 30t folding arm crane 31 is used, and for example, a folding arm crane 31 with the model CLSQZ1200 can be adopted.

The special machine set for the large-tonnage rail hoisting equipment can convey the crane and the cargo carrying flat car 40 to a construction position through the locomotive 20, so that the crane does not need to cross over a contact network when hoisting large-tonnage parts, does not need to dismantle the contact network, and only needs to be constructed in a railway skylight, thereby ensuring the personal safety of railway operation lines and passengers, and ensuring the smooth operation of the railway lines and improving the construction supply efficiency. The large-tonnage parts needing to be lifted can be carried by the cargo flat wagon 40, so that the large-tonnage parts are prevented from colliding with other equipment on the first flat wagon 30 in the lifting or transporting process; moreover, because the two ends of the flat cargo vehicle 40 are provided with the cranes, when the length of the lifted parts is long, the parts can be lifted together by the cranes at the two ends of the flat cargo vehicle 40, so that the safety of the lifting process of the parts is ensured.

In order to facilitate the reuse of the crane and the first flatcar 30, in the preferred embodiment, the crane is exemplified by a knuckle boom 31, and the first flatcar 30 is detachably connected to the knuckle boom 31 provided thereon. Illustratively, referring to fig. 1-4, a first flatcar 30 is removably connected to a knuckle boom 31 provided thereon by a non-destructive mounting device 32; wherein the nondestructive mounting device 32 comprises a first mounting frame 321, a first quick locking mechanism 322 and a first flange 323; the first quick locking mechanism 322 is arranged on the first mounting frame 321, and is used for quickly locking the first mounting frame 321 on the first platform 30; the first flange 323 is used to press the base of the knuckle boom 31 against the first mounting bracket 321. On the basis of not damaging the structure of the flat car, the folding arm crane 31 can be quickly and nondestructively installed on the flat car. Further, in order to ensure the first platform 30 to ensure the lateral stability when the arm folding crane 31 lifts the article, as shown in fig. 3 and 4, the nondestructive mounting device 32 further includes a foot 325 provided on the first mounting rack 321 for abutting against the ground or the rail 100 of the railroad. Furthermore, in order to avoid the feet 325 from obstructing the movement of the first platform 30, in some embodiments, as shown in fig. 3 and 4, the nondestructive mounting device 32 further includes a first moving structure 324, the feet 325 with locking function are provided on the first mounting rack 321 through the first moving structure 324, specifically, the first moving structure 324 is configured to be capable of moving in a horizontal plane along the extending direction X perpendicular to the track 100, the feet 325 are pivotally provided on the first moving structure 324, the pivot axis is parallel to the moving direction of the first moving structure 324, and the feet 325 with locking function can be configured to: the support foot 325 is sleeved on a column extending along the moving direction of the first moving structure 324, a screw hole for communicating the column with the outside is further processed on the support foot 325, and when the support foot 325 is rotated to a position to be fixed, locking of the support foot 325 relative to the first moving structure 324 can be achieved through a screw connected in the screw hole in a locking mode. For example, the first moving structure 324 may be implemented to include a guide rail and a slider, which are adapted to each other, the guide rail is disposed on the first mounting frame 321 in a direction perpendicular to the extending direction X of the rail 100 in a horizontal plane, and the support foot 325 is disposed on the slider. Preferably, the first moving structure 324 has a locking function, which may be implemented by machining a screw hole on one of the rail and the slider, which is located at an outer side, to communicate the other with the outside, and fastening by tightening a screw connected to the screw hole. Therefore, when the first platform 30 moves, the supporting leg 325 can be unlocked relative to the first moving structure 324, and when the supporting leg 325 is rotated to a horizontal plane, the supporting leg 325 is locked relative to the first moving structure 324, and then the first moving structure 324 drives the supporting leg 325 to move towards the side where the first mounting rack 321 is located until the supporting leg 325 can be placed on the first mounting rack 321, so that the first moving structure 324 can be locked to prevent the supporting leg 325 from blocking the movement of the first platform 30; when the first platform car 30 moves to a construction site, the first moving structure 324 can drive the support foot 325 to move in a direction away from the first mounting rack 321, the first moving structure 324 is locked after the support foot 325 moves to the position, then the support foot 325 is rotated relative to the first moving structure 324 until the support rests on the ground or the track 100, and then the support foot 325 is locked relative to the first moving structure 324. To avoid the feet 325 from interfering with the movement of the first flatcar 30, in other embodiments, the nondestructive mounting device 32 further comprises a first moving structure 324 and a second moving structure, the supporting foot 325 is sequentially arranged on the first mounting frame 321 through the second moving structure and the first moving structure 324, the first moving structure 324 is arranged to be capable of moving in a horizontal plane along the extending direction X perpendicular to the rail 100, and the second moving structure is arranged to be capable of moving in a vertical direction and has a locking function.

Fig. 2-4 exemplarily show one embodiment of the first quick locking mechanism 322, which includes, as shown, a first screw 3221, a first locking piece 3222, a pressing piece 3224, a second screw 3223, a first nut 3225, and a second nut 3226; at least one of the first screw 3221, the second screw 3223, the first nut 3225 and the second nut 3226 is provided, the first screw 3221 penetrates through a through hole of the first mounting rack 321, which is located at the outer side of the vehicle body of the first flatcar 30, in the vertical direction, and penetrates through a through hole on the first locking block 3222, the first nut 3225 is connected to the first screw 3221 in a threaded manner, the head of the first screw 3221 is located at one side, away from the other, of the first mounting rack 321 and the first locking block 3222, and the first nut 3225 is located at the other side, that is, the first mounting rack 321 and the first locking block 3222 are connected through the first screw 3221 and the first nut 3225; the second screw 3223 penetrates through the through holes of the first locking block 3222 and the pressing block 3224 in the vertical direction, the second nut 3226 is connected to the second screw 3223, and the distance between the first locking block 3222 and the pressing block 3224 can be adjusted by adjusting the position of the second nut 3226 on the second screw 3223, so that the vehicle body of the first platform vehicle 30 is clamped between the first locking block 3222 and the pressing block 3224, and the connection between the first mounting frame 321 and the vehicle body of the first platform vehicle 30 is further achieved.

In order to improve the stability of the crane in the longitudinal direction when the crane is used for lifting heavy objects, in a preferred embodiment, the crane is exemplified by a folding arm crane 31, and referring to fig. 1, 5 and 6, an auxiliary hydraulic leg 36 capable of being detachably connected with the rail 100 is arranged on the first platform 30. Fig. 5 and 6 exemplarily show one embodiment of the auxiliary hydraulic leg 36, which includes a second hydraulic cylinder 361 provided in a vertical direction on the body of the first platform 30, as shown; and a guide limit structure 362 provided on the second hydraulic cylinder 361 and detachably engaged with the rail 100, specifically, the guide limit structure 362 is provided on a piston rod of the second hydraulic cylinder 361. Therefore, the position of the guide limiting structure 362 in the vertical direction can be adjusted through the second hydraulic cylinder 361, so that the guide limiting structure can be clamped with the rails 100 with different heights, and the adaptability of the auxiliary hydraulic support leg 36 is improved; moreover, when the arm folding crane 31 lifts a heavy object, the body of the first platform wagon 30 can be clamped on the rail 100 through the guiding limit structure 362 in the auxiliary hydraulic leg 36 connected to the body, so that the body of the first platform wagon 30 is prevented from overturning when the arm folding crane 31 lifts the heavy object, and the stability of the arm folding crane 31 in lifting the heavy object is ensured. To facilitate the quick connection of the auxiliary hydraulic leg 36 to the body of the first flatcar 30, preferably, as shown in fig. 5 and 6, the auxiliary hydraulic leg 36 further includes a second mounting bracket 363 and a second quick locking mechanism 364; the second quick locking mechanism 364 is disposed on the second mounting rack 363, and is configured to be capable of quickly locking the second mounting rack 363 to the body of the first flatcar 30, the second hydraulic cylinder 361 is sequentially connected to the body of the first flatcar 30 through the second mounting rack 363 and the second quick locking mechanism 364, that is, the cylinder body of the second hydraulic cylinder 361 and the second quick locking mechanism 364 are both disposed on the second mounting rack 363. Fig. 6 and 7 exemplarily show one implementation of the second quick locking mechanism 364, which includes a second locking block 3641, a third screw 3642 and a third nut 3643, as shown, the second locking block 3641 is connected with one of the body of the first flatcar 30 and the second mounting bracket 363 through the third screw 3642 and the third nut 3643, and is snapped in a snap groove of the other one of the body of the first flatcar 30 and the second mounting bracket 363. Fig. 6 and 8 exemplarily show another implementation of the second quick locking mechanism 364, which includes a third locking block 3644, a fourth screw 3635 and a fourth nut 3646 as shown, wherein the third locking block 3644 is connected with one of the body of the first flatcar 30 and the second mounting bracket 363 through the fourth screw 3635 and the fourth nut 3646 and clamps the other of the body of the first flatcar 30 and the second mounting bracket 363 therebetween, for example, the third locking block 3644 is connected with the body of the first flatcar 30 through the fourth screw 3635 and the fourth nut 3646 and clamps the second mounting bracket 363 between the third locking block 3644 and the body of the first flatcar 30. As shown in fig. 5, the second quick locking mechanism 364 can also refer to the implementation manner of the first quick locking mechanism 322, which is not described herein again. Thus, the auxiliary hydraulic leg 36 can be quickly connected to the body of the first flatcar 30 by the second quick-lock mechanism 364.

Fig. 5 and 6 schematically show one embodiment of the guiding and limiting structure 362, which includes a third mounting frame 3621 provided on the piston rod of the second hydraulic cylinder 361; a slide rail 3622 provided on the third mount 3621 and provided in a horizontal plane along the extending direction X perpendicular to the rail 100; at least one group of chucks which can be movably arranged on the sliding rail 3622 along the sliding rail 3622, wherein each group of chucks comprises two rail grasping clamp forceps 3623, grooves 36231 matched with the top of the rail 100 are integrally formed or machined on the rail grasping clamp 3623, and the grooves 36231 of the two rail grasping clamp forceps 3623 in each group of chucks are oppositely arranged; the two rail grasping clamps 3623 in each set of the clip are connected by a fifth screw 3624 and a fifth nut 3625 while adjusting the distance therebetween to achieve the clamping or the releasing of the clip on the rail 100.

In a preferred embodiment, referring to fig. 1, the special unit for a large-tonnage rail hoisting equipment further comprises at least one of an internal combustion hydraulic pump station 33, a hydraulic control system and a counterweight 35, and the internal combustion hydraulic pump station 33 and the counterweight 35 are both arranged on the first platform truck 30. The internal combustion hydraulic pump station 33 can adopt the internal combustion hydraulic pump station 33 commonly used in the prior art, and is provided with a diesel engine, a power supply, a diesel engine electric control system, a high-pressure oil pump, a coarse and fine filter, an oil tank, a radiator, an electromagnetic overflow valve, an electromagnetic directional valve, an output hose, a joint and the like. The crane, as well as the hydraulic cylinders in the non-destructive mounting device 32 and the auxiliary hydraulic leg 36, can thus be powered by the internal combustion hydraulic pump station 33 and by the hydraulic control system.

In a preferred embodiment, the special unit for the large-tonnage rail hoisting equipment further comprises an electric control system, and the electric control system comprises a diesel engine control system, a height and moment limiting control system, a lighting and warning control system, a crane control system and the like. The running safety of the special machine set for the large-tonnage rail hoisting equipment is ensured.

In the preferred embodiment, the end doors and partial side doors at the coupling locations of the first platform 30 are removed to facilitate installation of the crane.

In a preferred embodiment, inter-hook stops are added at least one of between the first flatcar 30 and the locomotive 20, and between the first flatcar 30 and the cargo flatcar 40, to reduce play between vehicles when the brakes are engaged or activated.

In the preferred embodiment, and referring to fig. 1, the crane is exemplified by a knuckle boom 31. to facilitate the knuckle boom 31 lifting heavy loads onto the truck 40, the knuckle boom 31 is positioned on the side of the first truck 30 that is adjacent to the truck 40. Further, with continued reference to fig. 1, to ensure that the knuckle boom 31 is not prone to tipping when lifting heavy objects onto the loading platform 40, when additional hydraulic legs 36 are provided, the additional hydraulic legs 36 are provided on the side of the knuckle boom 31 of the first platform 30 facing the loading platform 40. Further, as shown in fig. 1, in order to ensure the smoothness of the articles lifted by the folding arm crane 31, when the internal combustion hydraulic pump station 33 and the counterweight 35 are further provided, the internal combustion hydraulic pump station 33 and the counterweight 35 are provided on the side of the folding arm crane 31 of the first platform truck 30, which faces away from the loading platform truck 40.

Preferably, the crane is exemplified by a folding arm crane 31, and as shown in fig. 1, the devices, structures and apparatuses arranged on the first flatcar 30 on both sides of the loading flatcar 40 are the same, and the layout of the devices, structures and apparatuses on the first flatcar 30 on both sides of the loading flatcar 40 is the same, for example, the auxiliary hydraulic legs 36 on both first flatcars 30 are arranged on the side of the folding arm crane 31 facing the loading flatcar 40, so as to ensure that the folding arm crane 31 is not prone to overturn when lifting heavy objects; for another example, the folding arm crane 31 is mounted on the first platform 30 by the nondestructive mounting device 32, so that the folding arm crane 31 can be detached from the first platform 30 without affecting the continuous use of the two; for another example, the internal combustion hydraulic pump station 33 and the counterweight 35 are both disposed on a side of the articulated arm crane 31 away from the cargo platform 40 to avoid obstructing the articulated arm crane 31 from lifting heavy objects, and since each first platform 30 is provided with the internal combustion hydraulic pump station 33 and the hydraulic control system, the internal combustion hydraulic pump station 33 and the hydraulic control system which are separately disposed on the platform can separately provide energy for the articulated arm crane 31, so as to simplify the operation steps when the first platform 30 is separated from and connected to the cargo platform 40.

What has been described above are merely some embodiments of the present invention. It will be apparent to those skilled in the art that various changes and modifications can be made without departing from the inventive concept thereof, and these changes and modifications can be made without departing from the spirit and scope of the invention.