CN116002520B - Sliding trolley device of crane - Google Patents

Abstract

The invention relates to the field of cranes, in particular to a sliding trolley device of a crane, which comprises lifting mechanisms arranged on two sides of a crane body, wherein a transmission mechanism connected with the lifting mechanisms is arranged on the crane body, and a positioning mechanism for limiting the shaking of a loading frame is arranged on one side of the lifting mechanism. The whole transportation stability to loading frame and aluminium alloy can be improved effectively to this application to reach the purpose of optimizing operational environment in the workshop.

Description

Sliding trolley device of crane

Technical Field

The invention relates to the field of cranes, in particular to a sliding trolley device of a crane.

Background

The cranes generally can be divided into three main categories, light and small crane equipment, bridge crane machinery and jib cranes. The bridge crane is hoisting equipment for hoisting materials in workshops, warehouses and stock yards. The bridge frame of the existing bridge crane runs longitudinally along the tracks paved on the two side high frames, so that the space below the bridge frame can be fully utilized to hoist materials, and the bridge frame is not blocked by ground equipment, and therefore, the bridge frame is the hoisting machine with the widest application range at present.

In an aluminum profile oxidation workshop, in order to facilitate transfer of aluminum profiles, the aluminum profiles are generally required to be placed in an oxidation pond by using a loading frame, and then are lifted and transferred by using a bridge crane. The current aluminum profile oxidation bridge crane comprises a main beam, an end beam, a guide rail, a transmission mechanism and a lifting mechanism. During operation, the whole loading frame is lifted through the lifting mechanism, and the whole end beam and the whole main beam are moved through the transmission mechanism, so that the aluminum profile is transferred to the next station under the driving of the loading frame.

In order to keep balance of the loading frame during lifting, the existing bridge crane generally adopts a double-hook bridge crane to lift the two ends of the loading frame, two lifting hooks are required to be adjusted to positions corresponding to the two ends of the loading frame during lifting, then the lifting hooks extend into the hollow positions of the two ends of the loading frame, and finally the lifting hooks are lifted to integrally lift the loading frame and the aluminum profile. But the lifting hook connected through the cable can produce when the girder removes and rock, leads to bumping between loading frame and the aluminium alloy and sends intermittent metal collision sound, has influenced the operational environment in the workshop.

Disclosure of Invention

In order to effectively improve the overall transfer stability of the loading frame and the aluminum profile, so as to achieve the purpose of optimizing the working environment in a production workshop, the application provides a sliding trolley device of a crane.

The application provides a sliding trolley device of hoist adopts following technical scheme:

the sliding trolley device of the crane comprises lifting mechanisms arranged on two sides of a crane body, wherein a transmission mechanism connected with the lifting mechanisms is arranged on the crane body, and a positioning mechanism for limiting the shaking of the loading frame is arranged on one side of the lifting mechanisms.

Through adopting above-mentioned technical scheme, drive mechanism can adjust the position of both sides hoisting mechanism, then carry out the bearing to the tip of loading frame through hoisting mechanism, make the loading frame rise under hoisting mechanism's drive, and carry out the restriction of position to loading frame and the aluminium alloy on the loading frame, the last rethread hoist body drives the loading frame that plays to rise and shifts out from oxidation pond, thereby make loading frame and aluminium alloy can be more stable at the in-process that shifts, when the improvement that is effective protects aluminium alloy, noise in can also being favorable to reducing the workshop, operational environment has been optimized.

Preferably, the lifting mechanism comprises a lifting assembly and a linkage assembly, wherein the lifting assembly is arranged on the crane body and located on one side of the loading frame, and the linkage assembly is arranged on the crane body and used for controlling lifting of the lifting assembly.

Through adopting above-mentioned technical scheme, the subassembly that lifts can carry out the bearing to the tip of loading frame under the drive of linkage subassembly, makes the loading frame can go up and down on the oxidation pond to be convenient for follow-up shift out the oxidation pond with aluminium alloy.

Preferably, the positioning mechanism comprises an extension assembly and a limiting assembly, the extension assembly is arranged on one side of the lifting mechanism, which is close to the loading frame, and the limiting assembly is arranged on the extension assembly and is connected with the loading frame.

Preferably, the lifting assembly comprises a lifting frame, a sliding part and a connecting hook, wherein the lifting frame is arranged on one side of the crane body, which is close to the loading frame, the sliding part is connected to the lifting frame in a sliding manner, and the connecting hook is arranged on one side of the sliding part, which is close to the loading frame, and is used for supporting the loading frame.

Through adopting above-mentioned technical scheme, the slider can slide along lifting frame under the effect of linkage subassembly to carry out the jacking to the tip of loading frame through the coupling hook, make the loading frame can go up and down in a flexible way under the drive of slider, simultaneously, through limiting the removal of subassembly on extending the subassembly, so that limiting the subassembly and spacing loading frame and aluminium alloy, thereby further promoted the stability of aluminium alloy on the loading frame.

Preferably, the linkage assembly comprises an upward lifting motor and a counterweight, wherein the upward lifting motor is arranged at a position of the crane body corresponding to the lifting frame and is connected with the sliding part, and the counterweight is arranged at the output end of the upward lifting motor and is in sliding fit with the lifting frame.

Through adopting above-mentioned technical scheme, the lift motor can drive the slider, makes the slider remove along the play of lifting by crane to further drive the loading frame through the slider and go up and down, so that follow-up transfer to the loading frame, in addition, through the cooperation of counterweight and slider, make the slider can go up and down the loading frame more fast and steadily, reduce the rocking of aluminium alloy on the loading frame.

Preferably, the extension assembly comprises a support bracket and an adjusting member, the support bracket is arranged on the inner side of the lifting mechanism, and the position of the limiting assembly is adjusted through the adjusting member.

By adopting the technical scheme, the adjusting piece can flexibly adjust the position of the limiting assembly on the support bracket, so that the limiting assembly can be aligned with the position of the loading frame, and the position of the loading frame and the aluminum profile can be conveniently limited subsequently.

Preferably, the limiting assembly comprises a propping block and an adjusting piece, wherein the propping block is connected with the support bracket through the adjusting piece, and the adjusting piece is arranged on one side, close to the loading frame, of the support bracket and is used for propping the propping block against the loading frame.

Through adopting above-mentioned technical scheme, the adjusting part can be adjusted in a flexible way to the position of supporting the tight piece for loading frame and aluminium alloy homoenergetic are enough to move steadily under the effect of supporting the tight piece, thereby reduce loading frame and aluminium alloy and bump the condition.

Preferably, one side of one support bracket far away from the lifting mechanism is provided with a connecting piece connected with the other support bracket.

Through adopting above-mentioned technical scheme, can make the support bracket of both sides more stably carry out spacingly to the loading frame and the aluminium alloy of placing on the loading frame to stability when further promoting the loading frame and transferring has reduced the condition of taking place the collision between loading frame and the aluminium alloy better.

Preferably, the limiting assembly further comprises a guiding-out piece, and the guiding-out piece is arranged on one side, close to the loading frame, of the abutting block.

Through adopting above-mentioned technical scheme, derive the piece and can lead back the oxidation pond in with the oxidation liquid that remains on supporting tight piece fast to reduce the condition that oxidation liquid is to supporting tight piece and is corroded continually.

Preferably, the support bracket is connected with the inner side of the lifting mechanism through a folding component.

Through adopting above-mentioned technical scheme, can fold up the support frame in a flexible way to improve the flexibility of use of this application positioning mechanism, reduce when need not to use positioning mechanism, the space occupation ratio of hoist.

In summary, the present application includes at least one of the following beneficial technical effects:

1. when the aluminum profile lifting device is used, the transmission mechanism can adjust the positions of the lifting mechanisms at two sides, then the lifting mechanisms are used for supporting the end parts of the loading frame, so that the loading frame is driven by the lifting mechanisms to lift, the positioning mechanisms are used for limiting the positions of the loading frame and aluminum profiles on the loading frame, and finally the lifting frame is driven by the crane body to move out of the oxidation pond, so that the loading frame and the aluminum profiles can be more stable in the transferring process, the noise in a production workshop can be reduced, and the working environment is optimized while the protection of the aluminum profiles is effectively improved;

2. through the arrangement of the sliding part, the loading frame can slide along the lifting frame under the action of the linkage assembly, and the end part of the loading frame is lifted up through the connecting hook, so that the loading frame can flexibly lift up and down under the drive of the sliding part, and meanwhile, the loading frame and the aluminum profile are limited by limiting the movement of the assembly on the extension assembly so as to limit the assembly, thereby further improving the stability of the aluminum profile on the loading frame;

3. through the arrangement of the connecting pieces, the supporting brackets on the two sides can more stably limit the loading frame and the aluminum profile placed on the loading frame, so that the stability of the loading frame during transferring is further improved, and the collision condition between the loading frame and the aluminum profile is better reduced;

4. through setting up the subassembly of folding up, can fold up the support bracket in a flexible way to improve the flexibility of use of this application positioning mechanism, reduce the space occupation rate of hoist when need not to use positioning mechanism.

Drawings

FIG. 1 is a schematic view of the overall structure of a crane body and a sliding trolley device according to an embodiment of the present application;

FIG. 2 is a schematic view of a part of the structure of a crane body according to an embodiment of the application;

FIG. 3 is an enlarged view of portion A of FIG. 1;

FIG. 4 is an enlarged view of portion B of FIG. 1;

FIG. 5 is a schematic view of a portion of the structure of an extension assembly according to an embodiment of the present application;

FIG. 6 is an enlarged view of portion C of FIG. 1;

fig. 7 is a schematic structural view of a limiting assembly according to an embodiment of the present application.

Reference numerals illustrate:

1. a crane body; 11. a main beam; 12. a walking platform; 13. an end beam; 14. a guide rail; 15. a strip-shaped groove; 2. a lifting mechanism; 21. a lifting assembly; 211. a lifting frame; 212. a slider; 213. a connecting hook; 214. a chute; 22. a linkage assembly; 221. lifting the motor; 222. a weight member; 223. a connecting shaft; 224. a sprocket; 225. a chain; 3. a transmission mechanism; 31. a drive bevel gear; 32. a driven bevel gear; 33. a drive motor; 34. a two-way screw rod; 4. a loading rack; 5. a positioning mechanism; 51. an extension assembly; 511. a support bracket; 512. an adjusting member; 513. a mounting rod; 514. a moving rod; 515. adjusting a cylinder; 516. a slide block; 517. a through hole; 518. a spring; 519. a clamping plate; 52. a defining assembly; 521. a tightening block; 522. an adjusting member; 523. a lead-out member; 524. a clamping block; 525. a diversion trench; 53. a connecting piece; 54. a folding component; 541. a main gear; 542. a pinion gear; 543. a motor base; 544. folding the motor; 6. a driving mechanism; 61. a synchronizing shaft; 62. a driving motor; 63. a gear set; 64. a rack; 7. an oxidation pond; 8. and (5) an aluminum profile.

Detailed Description

The present application is described in further detail below in conjunction with figures 1-7.

Examples:

the embodiment of the application discloses a sliding trolley device of a crane, and referring to fig. 1 and 2, the sliding trolley device comprises a lifting mechanism 2 and a positioning mechanism 5. Wherein, hoisting mechanism 2 is provided with two, and two hoisting mechanism 2 are installed respectively in the both sides of hoist body 1, simultaneously, are provided with oxidation pond 7 in the below of hoist body 1, and two hoisting mechanism 2 are located the both sides of oxidation pond 7 respectively. In addition, the positioning mechanism 5 is correspondingly arranged on one side of the lifting mechanism 2 close to the oxidation pond 7.

In this embodiment, the crane body 1 includes a main beam 11, a traveling platform 12, an end beam 13, and a guide rail 14. Wherein, guide rail 14 is provided with two, and two guide rails 14 are installed respectively on the wall of workshop both sides, and girder 11 and walking board 12 are located oxidation pond 7 top wholly and both ends all come respectively with two guide rail 14 sliding connection through end beam 13. Meanwhile, in order to realize that both ends of the main beam 11 and the traveling platform 12 can slide on the guide rail 14 in synchronization and stably, the driving mechanism 6 is provided on the crane body 1.

Referring to fig. 1 and 3, in the present embodiment, the driving mechanism 6 includes a synchronizing shaft 61 and a driving motor 62. Two synchronizing shafts 61 are respectively arranged above the main beam 11 and the walking table 12 corresponding to each other, and the two synchronizing shafts 61 are respectively connected with the main beam 11 and the walking table 12 in a rotating way through a plurality of bearing seats. Meanwhile, gear sets 63 are mounted at both ends of the synchronizing shafts 61, two driving motors 62 are mounted at positions corresponding to the two synchronizing shafts 61, and an output shaft of each driving motor 62 is fixed to one end of the synchronizing shaft 61 at the corresponding position.

Further, racks 64 having an extending direction corresponding to the extending direction of the guide rails 14 are attached to both guide rails 14, and the racks 64 are engaged with gear sets 63 at corresponding positions, respectively. When the movable type walking device is used, the driving motor 62 is started to drive the synchronous shaft 61 to rotate, so that the gear sets 63 at the two ends of the synchronous shaft 61 are matched with the racks 64 at the corresponding positions, and the main beam 11 and the walking table 12 are driven at the same time, and therefore stable movement of the main beam 11 and the walking table 12 on the guide rail 14 is achieved.

Referring to fig. 1 and 2, in the present embodiment, the lifting mechanism 2 includes a lifting assembly 21 and a linkage assembly 22. Wherein, the lifting assembly 21 is installed between the main beam 11 and the traveling platform 12, and the bottom extends to one side of the oxidation basin 7. And the linkage assembly 22 is mounted on the main beam 11 at a position corresponding to the lifting assembly 21.

Meanwhile, in the present embodiment, the positioning mechanism 5 includes an extension member 51 and a limiting member 52. Wherein the extension assembly 51 is rotatably mounted on the side of the lifting assembly 21 adjacent to the oxidation basin 7 by means of a folding assembly 54, and the limiting assembly 52 is mounted on the side of the extension assembly 51 adjacent to the loading frame 4.

When the aluminum profile frame is used, the lifting assembly 21 is aligned to two ends of the loading frame 4, then the linkage assembly 22 is used for supporting the two ends of the loading frame 4, the loading frame 4 and the aluminum profile 8 are driven to integrally lift up from the oxidation pond 7, the folding assembly 54 is used for adjusting the extension assembly 51 to one side of the loading frame 4, and finally the limiting assembly 52 is used for limiting the clamping of the loading frame 4 and the aluminum profile 8.

Referring to fig. 1 and 4, in the present embodiment, the lifting assembly 21 includes a lifting frame 211, a slider 212, and a connection hook 213. Wherein the lifting frame 211 is installed between the main beam 11 and the traveling platform 12 and extends downward to one side of the oxidation basin 7. The sliding part 212 is slidably connected to the inner side of the lifting frame 211 and the top is connected to the linkage assembly 22, meanwhile, one end of the connecting hook 213 is hinged to one side of the sliding part 212 close to the oxidation pond 7, and in order to limit the overturned connecting hook 213, a bolt is connected to the connecting hook 213 through a thread, and one end of the bolt penetrating the connecting hook 213 is abutted against the sliding part 212.

In this embodiment, the sliding member 212 includes a lifting slide plate and a roller. Wherein, the two inner side walls of the lifting frame 211 are provided with sliding grooves 214, the lifting slide plate is positioned at the inner side of the lifting frame 211, and the two sides of the lifting slide plate are respectively connected with the two sliding grooves 214 through rollers. In use, the lifting slide plate is driven to lift in the sliding groove 214 through the linkage assembly 22, so that the connecting hook 213 on one side of the lifting slide plate can stably lift the loading frame 4.

Referring to fig. 1 and 2, in the present embodiment, the linkage assembly 22 includes a lift motor 221 and a weight 222. Wherein, the lifting motor 221 is installed above the lifting frame 211, and a connecting shaft 223 is fixed at an output shaft of the lifting motor 221, and the connecting shaft 223 is rotatably connected with the top of the lifting frame 211 through a bearing seat. Meanwhile, two sprockets 224 are fixedly installed on the connection shaft 223, and chains 225 are provided on both sprockets 224. In addition, both ends of the chain 225 are fixedly installed with the weight 222 and the lifting slide plate, respectively.

When the lifting device is used, the lifting motor 221 is started to drive the connecting shaft 223 to synchronously rotate with the two chain wheels 224, so that the chain 225 is further driven to move through the chain wheels 224, and the lifting slide plate can stably lift under the action of the plurality of weight pieces 222, so that the purpose of adjusting the height of the loading frame 4 is achieved.

Referring to fig. 1 and 4, in the present embodiment, the folding assembly 54 includes a main gear 541, a secondary gear 542, a motor base 543, and a folding motor 544. Wherein, motor cabinet 543 is fixed in the side of lift slide near loading frame 4, and folding motor 544 is installed on motor cabinet 543, and simultaneously, main gear 541 is installed on folding motor 544's output shaft, and is connected with extension subassembly 51 through pinion 542.

In addition, two hinge lugs are symmetrically fixed on the side wall of the lifting slide plate, a hinge shaft is rotatably connected between the two hinge lugs, and one end of the hinge shaft penetrates one hinge lug and is fixed with the pinion 542.

Meanwhile, referring to fig. 1 and 5, in the present embodiment, the extension assembly 51 includes a support bracket 511 and an adjusting member 512. One end of the support bracket 511 is fixed to a side wall of the hinge shaft, and the adjusting member 512 is fixed under the support bracket 511 and connected to the limiting assembly 52.

When in use, the folding motor 544 is started, and is driven to the hinge shaft through the main gear 541 and the auxiliary gear 542, so as to drive the whole support bracket 511 to turn over and fold, thereby achieving the purpose of improving the flexibility of the positioning mechanism 5.

Referring to fig. 5 and 6, in the present embodiment, the support bracket 511 includes a mounting lever 513 and a moving lever 514. Wherein, one end of the mounting rod 513 is fixed to the hinge shaft, and one end of the moving rod 514 is slidably connected to the bottom of the mounting rod 513 and to the output end of the adjusting member 512.

Meanwhile, in the present embodiment, the adjusting member 512 includes an adjusting cylinder 515 and a slider 516. Wherein, a bar-shaped groove is arranged at the bottom of the mounting rod 513, the adjusting cylinder 515 is arranged in the bar-shaped groove, and the output end is fixed with the sliding block 516. In addition, the top of the moving rod 514 is fixed to the slider 516.

Referring to fig. 5 and 7, in the present embodiment, the limiting assembly 52 includes an adjuster 522. Wherein, a plurality of fixing bars are vertically fixed on both sides of the moving bar 514, and the positions of the fixing bars respectively correspond to the positions of a plurality of aluminum profiles 8 on the loading frame 4. Meanwhile, a plurality of adjusting members 522 are arranged at positions corresponding to the fixing strips, and two abutting blocks 521 are arranged at the output end of each adjusting member 522. In addition, the cross section of the abutting blocks 521 is L-shaped, and in order to further improve the stability of the aluminum profile 8 at the time of transfer, a clamping block 524 is provided inside the long side of each abutting block 521. Further, and in the present embodiment, the adjuster 522 may alternatively be a thumb cylinder.

When in use, the moving rod 514 is adjusted to a proper position by adjusting the air cylinder 515, so that the thumb air cylinder can be aligned with the aluminum profile 8 placed on the loading frame 4, and then the thumb air cylinder is started to drive the abutting block 521 and the clamping block 524 to respectively abut against the aluminum profile 8 and the side wall of the loading frame 4, thereby achieving the purpose of reducing continuous shaking between the loading frame 4 and the aluminum profile 8.

Referring to fig. 5 and 6, in order to further improve the stability of the loading frame 4 and the aluminum profile 8 at the time of transfer, a connecting piece 53 is provided at an end of one of the mounting rods 513, and at the same time, a through hole 517 is provided at an end of the other mounting rod 513 remote from the lifting slide plate, which is engaged with the connecting piece 53.

Wherein a reinforcement is provided within the through hole 517. In this embodiment, the reinforcement includes a spring 518 and a clamping plate 519. The springs 518 are provided in two, and the two springs 518 are fixed to two inner side walls opposite to the through holes 517, respectively. Meanwhile, two clamping plates 519 are arranged at positions corresponding to the springs 518, and opposite side walls of the two clamping plates 519 are respectively fixed with the two springs 518. In addition, in the present embodiment, the connector 53 may be an insert plate, and the cross section of the insert plate is L-shaped.

When in use, the two mounting rods 513 are turned over by the folding component 54, so that the plugboard at the end part of one mounting rod 513 is inserted into the through hole 517 at the end part of the other mounting rod 513, and the plugboard is clamped and limited by the clamping plate 519 in the through hole 517, thereby achieving the purpose of further improving the overall use stability of the positioning mechanism 5.

Referring to fig. 5 and 7, in order to facilitate the reaction solution in the oxidation tank 7 to be guided back into the oxidation tank 7 from the clamping block 524, a guiding member 523 is hinged to the bottom of the clamping block 524, wherein in this embodiment, the guiding member 523 may be selected as a guiding block, and the top of the guiding block is connected to the clamping block 524 through a torsion spring.

Simultaneously, the guiding grooves 525 are formed in the inner side surfaces of the clamping block 524 and the guiding-out block, the two sides of the guiding grooves 525 are communicated, and the distance between one side of each guiding groove 525 close to the oxidation pond 7 is smaller than that between one side of each guiding groove far away from the oxidation pond 7, so that the reaction liquid of the oxidation pond 7 remained on the clamping block 524 can be stably and rapidly guided back into the oxidation pond 7.

Referring to fig. 1 and 2, in order to facilitate the adjustment of the positions of the lifting frames 211 on both sides, a transmission mechanism 3 is provided on the main beam 11. The main beam 11 and the walking board 12 are provided with bar grooves 15 which are connected with the lifting frame 211 in a sliding manner, and a bidirectional screw rod 34 is connected in one bar groove 15 in a rotating manner. Simultaneously, two sections of threads of the bidirectional screw rod 34 are respectively in threaded connection with lifting frames 211 on two sides.

In addition, in the present embodiment, the transmission mechanism 3 includes a drive bevel gear 31, a driven bevel gear 32, and a transmission motor 33. The transmission motor 33 is mounted on top of the main beam 11 and the output shaft penetrates into the bar-shaped groove 15. Meanwhile, a drive bevel gear 31 is installed at an output shaft of a driving motor 33, and a driven bevel gear 32 is fixedly installed at the middle of the bi-directional screw rod and engaged with the drive bevel gear 31. In addition, in order to facilitate the sliding of the lifting frame 211 in the bar-shaped groove 15, pulleys in rolling fit with the bar-shaped groove 15 are arranged on both sides of the lifting frame 211.

When the lifting frame is used, the driving bevel gear 31 can drive the driven bevel gear 32 to rotate by starting the transmission motor 33 so as to drive the bidirectional screw rod to synchronously rotate, so that the lifting frames 211 on two sides move oppositely or reversely, the purpose of flexibly adjusting the positions of the lifting frames 211 is achieved, and the connecting hooks 213 are convenient for supporting the loading frames 4 at different positions.

The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.

Claims (6)

1. The utility model provides a sliding trolley device of hoist which characterized in that: the lifting mechanism (2) is arranged on two sides of the crane body (1), a transmission mechanism (3) connected with the lifting mechanism (2) is arranged on the crane body (1), and a positioning mechanism (5) for limiting the shaking of the loading frame (4) is arranged on one side of the lifting mechanism (2); the positioning mechanism (5) comprises an extension assembly (51) and a limiting assembly (52), the extension assembly (51) is arranged on one side, close to the loading frame (4), of the lifting mechanism (2), and the limiting assembly (52) is arranged on the extension assembly (51) and is connected with the loading frame (4); the limiting assembly (52) comprises a supporting block (521), an adjusting piece (522) and a guiding-out piece (523), wherein the guiding-out piece (523) is arranged on one side, close to the loading frame (4), of the supporting block (521);

the extension assembly (51) comprises a support bracket (511) and an adjusting piece (512), wherein the support bracket (511) is arranged on the inner side of the lifting mechanism (2) and is used for adjusting the position of the limiting assembly (52) through the adjusting piece (512);

the abutting block (521) is connected with the support bracket (511) through an adjusting piece (522), and the adjusting piece (522) is arranged on one side of the support bracket (511) close to the loading frame (4) and is used for abutting the abutting block (521) with the loading frame (4).

2. The sliding trolley device of a crane according to claim 1, wherein: hoisting mechanism (2) are including lifting subassembly (21) and linkage subassembly (22), lifting subassembly (21) set up on hoist body (1) and are located one side of loading frame (4), linkage subassembly (22) set up on hoist body (1) and are used for controlling lifting subassembly (21).

3. A trolley device for a crane according to claim 2, characterized in that: the lifting assembly (21) comprises a lifting frame (211), a sliding part (212) and a connecting hook (213), wherein the lifting frame (211) is arranged on one side, close to the loading frame (4), of the crane body (1, the sliding part (212) is connected to the lifting frame (211) in a sliding mode, and the connecting hook (213) is arranged on one side, close to the loading frame (4), of the sliding part (212) and used for supporting the loading frame (4).

4. A sliding trolley device for a crane according to claim 3, characterized in that: the linkage assembly (22) comprises an ascending motor (221) and a counterweight (222), wherein the ascending motor (221) is arranged at a position of the crane body (1) corresponding to the lifting frame (211) and is connected with the sliding part (212), and the counterweight (222) is arranged at the output end of the ascending motor (221) and is in sliding fit with the lifting frame (211).

5. The sliding trolley device of a crane according to claim 1, wherein: one side of one support bracket (511) far away from the lifting mechanism (2) is provided with a connecting piece (53) connected with the other support bracket (511).

6. The sliding trolley device of a crane according to claim 1, wherein: the support bracket (511) is connected with the inner side of the lifting mechanism (2) through a folding component (54).