CN220149117U - Lifting device with two-stage lifting platform - Google Patents

Abstract

The utility model discloses a lifting device with a two-stage lifting platform, which comprises a main body frame and a lifting mechanism, wherein front and rear cross beams are fixedly and symmetrically arranged on the surface of the main body frame, and lifting limit T-shaped guide rails are fixedly connected with the surface of the main body frame. This hoisting device with second grade elevating platform has set up spacing T type guide rail of lift and has carried cargo the crossbeam, has provided an effective scheme of perpendicular transport face upper and lower access point space restriction condition, when being applied to different floor material transport, can reduce floor space opening size and below area as far as possible, it is bigger than ordinary single channel steel guide rail contact surface to go up and down spacing T type guide rail simultaneously, the atress condition is better, can guarantee the smooth operation that carries cargo the crossbeam, whole equipment cost can be lower, simultaneously set up the scheme in a perpendicular transport face top space, but the space in make full use of current place, the degree of automation of whole automatic production line is improved, the overall efficiency of production line is improved.

Description

Lifting device with two-stage lifting platform

Technical Field

The utility model relates to the technical field of automatic production, in particular to a lifting device with a secondary lifting platform.

Background

At present, when material conveying at different heights is involved in an automatic production material conveying line, for example, material conveying among different floors, and when light load or medium load is carried out and the height of the material conveying drop is relatively large, most of adopted structures are a conventional counterweight type lifter and conveying line structure, a hydraulic lifting structure and a pneumatic lifting structure;

however, when the conventional counterweight type elevator and conveyor line structure is used, the frame structure is higher than the conveyor line conveying surface, the occupied space of the structure is larger, the occupied area is wider, the requirements on the floor weighing and civil construction are higher when the conventional counterweight type elevator and conveyor line structure is used, and the conventional counterweight type elevator and conveyor line structure cannot be adopted under the condition of limited space; when the hydraulic lifting structure is used, the carried object is heavier, but the height of the material conveying fall is smaller, so that the stable conveying of the material with the height of more than 1m can not be realized, and the conveying of the material between different floors can not be realized; the pneumatic lifting structure can only bear lighter materials when in use, and the materials with smaller height of the material conveying fall can not be conveyed for the materials with larger weight of the material conveying fall, so that the practicability is low.

Disclosure of Invention

The utility model aims to provide a lifting device with a two-stage lifting platform, which solves the problems that the occupied space is larger, the occupied area is wider, the height of a material conveying drop is smaller, materials among different floors cannot be conveyed, materials with larger drop cannot be conveyed, and the practicability is low in the background technology.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the lifting device with the two-stage lifting platform comprises a main body frame I and a lifting mechanism, wherein front and rear cross beams are symmetrically arranged on the surface of the main body frame I, lifting limit T-shaped guide rails are fixedly connected with the surface of the main body frame I, lifting guide wheel sets are fixedly connected with the surface of the main body frame I, cargo carrying cross beams are fixedly arranged on the surface of the cargo carrying platform lifting guide wheel sets, a lifting driving motor is fixedly connected with the bottom surface of the main body frame I, a motor end driving sprocket is fixedly connected with the surface of an output shaft of the lifting driving motor, a main driving chain is sleeved on the surface of the motor end driving sprocket, a main driving shaft is rotatably arranged on the bottom surface of the main body frame I, driving sprockets are symmetrically arranged on the surface of the main driving shaft, driving sprocket on the 1 side, driving sprocket on the other 1 end is sleeved with driving chains, lifting chain sets are fixedly arranged on the surface of the driving sprocket on the other end, driven sprocket sets are connected with driven sprocket assemblies, lifting chain sets are fixedly arranged on the surface of the driving sprocket sets, lower limit buffers are fixedly connected with the bottom surface of the main body frame I, a lifting mounting plate is fixedly connected with a bottom plate, a hydraulic clamping plate is rotatably arranged on the bottom plate of the bottom plate, a swing-mounted plate is rotatably arranged on the bottom plate, a swing-mounted plate is rotatably arranged on the bottom plate is rotatably arranged, a hydraulic clamping plate is fixedly arranged on the bottom plate, and is rotatably mounted, the surface of the rotating shaft is symmetrically and fixedly connected with a swinging rod II, the surface of the bottom plate of the hydraulic lifting table is provided with a shearing mechanism hydraulic cylinder, the tail end of the shearing mechanism hydraulic cylinder is connected with a hydraulic rod, 2 swinging rods I are fixedly connected with a rotating shaft, the surface of the rotating shaft is connected with a hydraulic rod, the tail end of the swinging rod II and the tail end of the swinging rod I are fixedly connected with a lifting platform, the upper surface of the lifting platform is symmetrically provided with a conveying line guide rail, the surface of the conveying line guide rail is slidably provided with a main body frame II, the surface of the main body frame II is fixedly provided with a conveying line motor, the surface of the main body frame II is symmetrically provided with a conveying line driving sprocket, the inside of the main body frame II is embedded with a conveying line carrier roller, the upper surface of the main body frame II is provided with a conveying line plate surface, the surface of the lifting platform is fixedly connected with a conveying line driving cylinder, the tail end of the conveying line driving cylinder is connected with a fish-eye joint, the tail end of the fish-eye joint is connected with the main body frame II, and the two ends of the lifting platform are symmetrically provided with limiting blocks.

The lifting mechanism is arranged on the surface of the lifting guide wheel set of the cargo table and used for adjusting the position of the cargo beam;

the lifting mechanism comprises: the lifting guide wheel frame is arranged on the surface of the lifting guide wheel set of the cargo carrying platform, the front guide wheel set mounting plate and the rear guide wheel set mounting plate are symmetrically arranged on the surface of the lifting guide wheel frame, the left guide wheel and the right guide wheel set mounting plate are arranged inside the left guide wheel and the right guide wheel set mounting plate, the left guide wheel mounting shaft and the right guide wheel mounting shaft are arranged on the surface of the left guide wheel and the right guide wheel, the guide wheel compression nut is arranged on the surface of the left guide wheel mounting shaft, the front guide wheel mounting shaft and the rear guide wheel mounting shaft are arranged inside the front guide wheel and the rear guide wheel mounting shaft in an embedded manner, and the front guide wheel and the rear guide wheel are arranged on the surface of the front guide wheel mounting shaft and the rear guide wheel mounting shaft.

Preferably, the lifting guide wheel group of the cargo platform is in sliding connection with the lifting limit T-shaped guide rail, and the surface of the lifting limit T-shaped guide rail is attached to the surfaces of the left guide wheel and the right guide wheel.

Preferably, the main driving shaft is rotatably connected with the main body frame, and the lower limit buffer is correspondingly arranged with the cargo beam.

Preferably, the installation clamping plate rotating shaft is rotationally connected with the swing clamping plate, and the swing clamping plate is rotationally connected with the swing clamping plate driving cylinder.

Preferably, the hydraulic lifting platform bottom plate is rotationally connected with the roller, and the hydraulic lifting platform bottom plate is rotationally connected with the rotating shaft, and the hydraulic rod is rotationally connected with the rotating shaft.

Preferably, the conveying line guide rail is in sliding connection with the second main body frame, and the limiting blocks are symmetrically arranged at two ends of the conveying line guide rail.

Preferably, the conveying line driving sprocket is rotationally connected with the second main body frame, and the second main body frame is rotationally connected with the conveying line plate surface.

Compared with the prior art, the utility model has the beneficial effects that: this hoisting device with second grade elevating platform:

1. the lifting limit T-shaped guide rail and the cargo beam are arranged, an effective scheme of limiting the space of the vertical conveying surface to the upper access point and the lower access point is provided, when the lifting limit T-shaped guide rail is applied to material conveying between different floors, the size of an opening between floors and the occupied area below the floors can be reduced as much as possible, meanwhile, compared with a common single channel steel guide rail, the lifting limit T-shaped guide rail is larger in contact surface, the stress condition is better, smooth running of the cargo beam can be ensured, the cost of the whole equipment is lower, and meanwhile, the scheme of limiting the space above the vertical conveying surface is provided, so that the space of the existing site can be fully utilized, the automation degree of the whole automatic production line is improved, and the whole efficiency of the production line is improved;

2. the cargo carrying cross beam and the conveying line plate surface are arranged, the conveying line is arranged on the conveying line plate surface, the cargo carrying platform is lifted to a high point when the cargo carrying cross beam is at a high position, meanwhile, the conveying line plate surface is lifted to a high point, the conveying surface is higher than the lifting frame main body and higher than the lifting frame main body, the space size of the lifting frame main body is smallest, the cargo carrying cross beam is lowered to a low point when the cargo carrying cross beam is at a low position, meanwhile, the two-level hydraulic lifting platform is lowered to the low point, the lower outlet height can be realized, the material conveying between different floors can be carried out, and meanwhile, the conveying line guide rail and the main body frame II are arranged, so that the seamless butt joint with the original line body can be ensured when the cargo carrying cross beam is in butt joint at a high position and a low position.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a schematic cross-sectional view of the structure B-B of FIG. 1 in accordance with the present utility model;

FIG. 3 is a schematic top view of the structure of FIG. 1 according to the present utility model;

FIG. 4 is a schematic view of the cross-sectional C-C structure of FIG. 1 in accordance with the present utility model;

FIG. 5 is a schematic diagram of the structure of the number 4 in FIG. 1 according to the present utility model;

FIG. 6 is a schematic cross-sectional view of the structure A-A of FIG. 5 in accordance with the present utility model.

In the figure: 1. a main body frame I; 2. front and rear cross members; 3. lifting and limiting the T-shaped guide rail;

4. lifting guide wheel sets of the cargo carrying platform; 401. lifting the guide wheel frame; 402. front and rear guide wheel set mounting plates; 403. left and right guide wheel set mounting plates; 404. left and right guide wheels; 405. left and right guide wheel mounting shafts; 406. the guide wheel presses the nut; 407. front and rear guide wheel mounting shafts; 408. front and rear guide wheels;

5. a cargo beam; 6. a lifting driving motor; 7. the motor end drives a chain wheel; 8. a main drive chain; 9. a main drive shaft; 10. a drive sprocket; 11. lifting the chain set; 12. a driven sprocket assembly; 13. a lower limit buffer; 14. a fall protection device mounting plate; 15. a clamp plate rotating shaft; 16. the swing clamping plate drives the cylinder; 17. swinging the clamping plate; 18. a hydraulic lifting platform bottom plate; 19. a roller; 20. a swing rod I; 21. a rotating shaft; 22. a swing rod II; 23. a hydraulic cylinder of a shearing fork mechanism; 24. a hydraulic rod; 25. a rotating shaft; 26. a lifting platform; 27. a conveyor line guide rail; 28. a main body frame II; 29. a conveyor line motor; 30. a conveyor line driving sprocket; 31. conveying line carrier rollers; 32. conveying line board surfaces; 33. a conveyor line driving cylinder; 34. a fish eye joint; 35. and a limiting block.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The embodiment of the utility model provides a lifting device with a secondary lifting platform, which moves on the surface of a lifting limit T-shaped guide rail through a lifting guide wheel set of a cargo carrying platform, can drive a cargo carrying cross beam to move upwards, simultaneously a hydraulic cylinder of a fork shearing mechanism can drive a main body frame to move upwards, two layers of lifting can be completed, material conveying among different floors can be conveniently completed, meanwhile, the occupied area of the lifting limit T-shaped guide rail is smaller, and the structure is stable.

The lifting device having the secondary lifting table will be described in detail below. The following description of the embodiments is not intended to limit the preferred embodiments.

The utility model is described in detail below with reference to the drawings and the detailed description.

Referring to fig. 1 to 6, a lifting device with a secondary lifting platform according to this embodiment includes: the main body frame I11, the front and back crossbeam 2 is installed to the fixed surface symmetry of main body frame I11, and the fixed surface of main body frame I1 is connected with lift spacing T type guide rail 3, the fixed surface symmetry of main body frame I1 is connected with cargo table lift guide wheelset 4, and the fixed surface of cargo table lift guide wheelset 4 installs cargo crossbeam 5, the bottom surface fixedly connected with lift driving motor 6 of main body frame I1, and the output shaft surface fixedly connected with motor end drive sprocket 7 of lift driving motor 6, and the surface cover of motor end drive sprocket 7 is established and is installed main drive chain 8, the bottom surface rotation of main body frame I1 is installed main drive shaft 9, and the surface symmetry of main drive shaft 9 is provided with drive sprocket 10,1 side drive sprocket 10 surface cover is installed and is installed drive chain 8, and the drive sprocket 10 surface cover of another 1 end is established and is installed and is lifted chain set 11, cargo table lift guide wheelset 4 is connected with driven sprocket assembly 12, and driven sprocket assembly 12 surface cover is installed and lifted chain set 11, the bottom surface fixedly connected with lower spacing buffer 13 of main body frame I1, the fixed surface is connected with motor end drive sprocket 7, and the surface cover of motor end drive sprocket 7 is installed, and the top plate 18 is installed with lift plate 18, the hydraulic clamping plate of a swing drive plate is installed and is installed with the bottom plate 18, the rotation plate 18, the bottom plate is installed and is installed with the rotation plate 18, the bottom plate 18, the hydraulic clamping plate is installed and is installed with the bottom plate 18, the surface of the hydraulic clamping plate 18, the top plate 18, the surface of the top plate is installed and to the bottom plate, and is installed and is 18, the surface of the rotating shaft 21 is symmetrically and fixedly connected with a swing rod II 22, the surface of the hydraulic lifting platform bottom plate 18 is provided with a shearing fork mechanism hydraulic cylinder 23, the tail end of the shearing fork mechanism hydraulic cylinder 23 is connected with hydraulic rods 24,2, a rotating shaft 25 is fixedly connected between the swing rods 20, the surface of the rotating shaft 25 is connected with a hydraulic rod 24, the tail end of the swing rod II 22 and the tail end of the swing rod II 20 are fixedly connected with a lifting platform 26, the upper surface of the lifting platform 26 is symmetrically provided with a conveying line guide rail 27, the surface of the conveying line guide rail 27 is slidably provided with a main body frame II 28, the surface of the main body frame II 28 is fixedly provided with a conveying line motor 29, the surface of the main body frame II 28 is symmetrically provided with a conveying line driving sprocket 30, the inside of the main body frame II 28 is internally provided with a conveying line carrier roller 31, the upper surface of the main body frame II 28 is provided with a conveying line plate 32, the surface of the lifting platform 26 is fixedly connected with a conveying line driving cylinder 33, the tail end of the conveying line driving cylinder 33 is connected with a fish-eye joint 34, the tail end of the fish-eye joint 34 is connected with the main body frame II 28, and the two ends of the lifting platform 26 are symmetrically provided with limiting blocks 35;

the lifting device with the two-stage lifting platform mainly comprises a main body frame I1, a front cross beam 2, a rear cross beam 2, a lifting limit T-shaped guide rail 3, a lifting guide wheel set 4 of a cargo carrying platform, a cargo carrying cross beam 5, a lifting driving motor 6, a motor end driving chain wheel 7, a main driving chain 8, a main driving shaft 9, a driving chain wheel 10, a lifting chain set 11, a driven chain wheel assembly 12, a lower limit buffer 13, a falling prevention device mounting plate 14, a clamping plate rotating shaft 15, a swinging clamping plate driving cylinder 16, a swinging clamping plate 17, a hydraulic lifting platform bottom plate 18, a roller 19, a swinging rod I20, a rotating shaft 21, a swinging rod II 22, a shearing fork mechanism hydraulic cylinder 23, a hydraulic rod 24, a rotating shaft 25, a lifting platform 26, a conveying line guide rail 27, a main body frame II 28, a conveying line motor 29, a conveying line driving chain wheel 30, a conveying line carrier roller 31, a conveying line plate surface 32, a conveying line driving cylinder 33, fish eye joints 34, a limiting block 35 and a lifting mechanism, wherein the lifting device with the two-stage lifting guide wheel set 4 provided by the scheme changes the height of the cargo carrying platform, and the lifting device is provided with the double-stage lifting structure, the shearing fork mechanism hydraulic mechanism 23 and the lifting cross beam 32 is changed, and the lifting structure of the cargo carrying platform can be increased, and the lifting structure of the cargo carrying platform can be realized.

In some embodiments, the adjustment mechanism comprises: the lifting guide wheel frame 401 is arranged on the surface of the lifting guide wheel set 4 of the cargo platform, front and rear guide wheel set mounting plates 402 and left and right guide wheel set mounting plates 403 are symmetrically arranged on the surface of the lifting guide wheel frame 401, left and right guide wheels 404 are arranged inside the left and right guide wheel set mounting plates 403, left and right guide wheel mounting shafts 405 are arranged on the surface of the left and right guide wheels 404, guide wheel compression nuts 406 are arranged on the surface of the left and right guide wheel mounting shafts 405, front and rear guide wheel mounting shafts 407 are arranged inside the front and rear guide wheel set mounting plates 402 in an embedded manner, and front and rear guide wheels 408 are arranged on the surface of the front and rear guide wheel mounting shafts 407.

The lifting guide wheel set 4 of the cargo platform moves up and down on the surface of the lifting chain set 11, because the lifting limit T-shaped guide rail 3 is in contact with the surface of the left guide wheel 404 and the surface of the right guide wheel 404, the left guide wheel 404 and the right guide wheel 404 are driven to rotate by the lifting limit T-shaped guide rail 3, the left guide wheel 404 drives the left guide wheel mounting shaft 405 to rotate in the front guide wheel mounting plate 402 and the rear guide wheel mounting plate 402, but the lifting guide wheel set 4 of the cargo platform stops moving, the guide wheel compression nut 4 limits the left guide wheel 404 to rotate by the left guide wheel mounting shaft 405 and the right guide wheel 404, and the lifting limit T-shaped guide rail 3 drives the front guide wheel mounting shaft 407 to rotate in the front guide wheel mounting plate 402 and the rear guide wheel mounting plate 408 by the front guide wheel 408 and the rear guide wheel mounting shaft 407.

In some embodiments, the cargo table lifting guide wheel set 4 is in sliding connection with the lifting limit T-shaped guide rail 3, and the surface of the lifting limit T-shaped guide rail 3 is attached to the surface of the left and right guide wheels 404.

The lifting driving motor 6 is started, the output shaft of the lifting driving motor 6 drives the motor end driving chain wheel 7 to rotate, the motor end driving chain wheel 7 drives the main driving chain 8 to move, the main driving chain 8 drives one side driving chain wheel 10 to rotate through the driving chain wheel 10, the driving chain wheel 10 drives the main driving shaft 9 to rotate, the main driving shaft 9 drives the lifting chain group 11 on the other side to rotate, the lifting chain group 11 drives the chain wheel assembly 12 to rotate, the lifting chain group 11 drives the lifting guide wheel group 4 to move on the surface of the lifting limit T-shaped guide rail 3, and the left guide wheel 404 and the right guide wheel 404 are driven to rotate on the surface of the lifting limit T-shaped guide rail 3.

In some embodiments, the main drive shaft 9 is rotatably connected to the main body frame 1, and the lower limit bumper 13 is arranged in correspondence with the position of the cargo cross member 5.

The lifting guide wheel set 4 drives the lower limit buffer 13 to move up and down, and the lower limit buffer 13 buffers the lower limit buffer 13 when descending.

In some embodiments, the mounting card rotation shaft 15 is in rotational connection with the swing card 17, and the swing card 17 is in rotational connection with the swing card drive cylinder 16.

The clamping plate driving cylinder 16 drives the swing clamping plate 17 to move, and the swing clamping plate 17 drives the installation clamping plate rotating shaft 15 to rotate in the anti-falling device installation plate 14.

In some embodiments, the hydraulic lift table 18 is rotatably coupled to the roller 19, and the hydraulic lift table 18 is rotatably coupled to the shaft 21, and the hydraulic lever 24 is rotatably coupled to the shaft 25.

The hydraulic rod 24 is started, the hydraulic rod 24 moves upwards through the swing rod II 22 of the rotating shaft 25, the swing rod II 22 drives the swing rod I20 to move upwards, at the moment, the swing rod I20 drives the roller 19 to rotate in the hydraulic lifting platform bottom plate 18, the swing rod II 22 drives the rotating shaft 21 to rotate in the hydraulic lifting platform bottom plate 18, the swing rod II 22 and the swing rod I20 drive the main body frame II 28 to move upwards, and the height of the main body frame II 28 is changed.

In some embodiments, the conveying line guide rail 27 is slidably connected to the second main body frame 28, and the limiting blocks 35 are symmetrically disposed at two ends of the conveying line guide rail 27.

The conveyor line driving cylinder 33 is started, and the conveyor line driving cylinder 33 drives the second main body frame 28 to move on the surface of the conveyor line guide rail 27 through the fish eye joint 34, and the limiting block 35 prevents the second main body frame 28 from being separated from the conveyor line guide rail 27 when moving.

In some embodiments, the conveyor line drive sprocket 30 is rotatably coupled to the second body frame 28, and the second body frame 28 is rotatably coupled to the conveyor line deck 32.

The conveyor line motor 29 drives the conveyor line driving sprocket 30 to rotate, and the conveyor line driving sprocket 30 drives the conveyor line plate surface 32 to rotate inside the main body frame two 28.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (7)

1. A lifting device with a secondary lifting platform, comprising: main body frame one (1) and elevating system, its characterized in that:

the main body frame I (1), front and rear cross beams (2) are symmetrically installed on the surface of the main body frame I (1), a lifting limit T-shaped guide rail (3) is fixedly connected to the surface of the main body frame I (1), a cargo carrying platform lifting guide wheel set (4) is fixedly connected to the surface of the main body frame I (1), a cargo carrying cross beam (5) is fixedly installed on the surface of the cargo carrying platform lifting guide wheel set (4), a lifting driving motor (6) is fixedly connected to the bottom surface of the main body frame I (1), a motor end driving sprocket (7) is fixedly connected to the surface of an output shaft of the lifting driving motor (6), a main driving chain (8) is installed on the surface sleeve of the motor end driving sprocket (7), a main driving shaft (9) is rotatably installed on the bottom surface of the main body frame I (1), a driving sprocket (10) is symmetrically arranged on the surface of the main driving shaft (9), a driving sprocket (10) is installed on the surface sleeve of the side of the driving sprocket (10), a lifting group (11) is installed on the surface sleeve of the driving sprocket (10) at the other 1 end, a lifting guide motor (4) is fixedly connected to the bottom surface of the main body frame I (1), a driven sprocket (12) is installed on the surface of the driven sprocket (12), the main body frame I (1) is fixedly connected with a falling prevention device mounting plate (14), a clamping plate rotating shaft (15) and a swinging clamping plate driving cylinder (16) are rotatably mounted in the falling prevention device mounting plate (14), a swinging clamping plate (17) is mounted on the surface of the clamping plate rotating shaft (15) in a sleeved mode, the other end of the swinging clamping plate (17) is connected with the clamping plate driving cylinder (16), a rotating shaft (25) is fixedly connected between the upper surface of the cargo beam (5) and the upper surface of the hydraulic lifting table bottom plate (18), a roller wheel (19) is rotatably mounted on the upper surface of the roller wheel (19), a swinging rod I (20) is fixedly and symmetrically connected with the surface of the roller wheel (19), a rotating shaft (21) is rotatably mounted on the surface of the hydraulic lifting table bottom plate (18), a swinging rod II (22) is fixedly connected with the surface of the rotating shaft (21), a fork mechanism hydraulic cylinder (23) is mounted on the surface of the hydraulic lifting table bottom plate (18), the tail end of the fork mechanism hydraulic cylinder (23) is connected with a hydraulic rod (24), a rotating shaft (25) is fixedly connected between the swinging rod I (20), the surface of the rotating shaft (25) is fixedly connected with the swinging rod II (20), the upper surface of the lifting platform (26) is symmetrically provided with a conveying line guide rail (27), the surface of the conveying line guide rail (27) is slidably provided with a main body frame II (28), the surface of the main body frame II (28) is fixedly provided with a conveying line motor (29), the surface of the main body frame II (28) is symmetrically provided with a conveying line driving chain wheel (30), the inside of the main body frame II (28) is embedded with a conveying line carrier roller (31), the upper surface of the main body frame II (28) is provided with a conveying line plate surface (32), the surface of the lifting platform (26) is fixedly connected with a conveying line driving cylinder (33), the tail end of the conveying line driving cylinder (33) is connected with a fish eye joint (34), the tail end of the fish eye joint (34) is connected with the main body frame II (28), and two ends of the surface of the lifting platform (26) are symmetrically provided with limiting blocks (35).

The lifting mechanism is arranged on the surface of the lifting guide wheel set (4) of the cargo table and used for adjusting the position of the cargo beam (5);

the lifting mechanism comprises: the lifting guide wheel frame (401) is arranged on the surface of the lifting guide wheel set (4) of the cargo platform, front and rear guide wheel set mounting plates (402) and left and right guide wheel set mounting plates (403) are symmetrically arranged on the surface of the lifting guide wheel frame (401), left and right guide wheels (404) are arranged inside the left and right guide wheel set mounting plates (403), left and right guide wheel mounting shafts (405) are arranged on the surface of the left and right guide wheels (404), guide wheel compression nuts (406) are arranged on the surface of the left and right guide wheel mounting shafts (405), front and rear guide wheel mounting shafts (407) are arranged inside the front and rear guide wheel set mounting plates (402), and front and rear guide wheels (408) are arranged on the surface of the front and rear guide wheel mounting shafts (407).

2. A lifting device with a secondary lifting platform as claimed in claim 1, characterized in that: the cargo carrying platform lifting guide wheel set (4) is in sliding connection with the lifting limit T-shaped guide rail (3), and the surface of the lifting limit T-shaped guide rail (3) is attached to the surfaces of the left guide wheel and the right guide wheel (404).

3. A lifting device with a secondary lifting platform as claimed in claim 1, characterized in that: the main driving shaft (9) is rotatably connected with the main body frame I (1), and the lower limit buffer (13) is correspondingly arranged with the cargo beam (5).

4. A lifting device with a secondary lifting platform as claimed in claim 1, characterized in that: the installation clamping plate rotating shaft (15) is rotationally connected with the swing clamping plate (17), and the swing clamping plate (17) is rotationally connected with the swing clamping plate driving cylinder (16).

5. A lifting device with a secondary lifting platform as claimed in claim 1, characterized in that: the hydraulic lifting platform bottom plate (18) is rotationally connected with the roller (19), the hydraulic lifting platform bottom plate (18) is rotationally connected with the rotating shaft (21), and the hydraulic rod (24) is rotationally connected with the rotating shaft (25).

6. A lifting device with a secondary lifting platform as claimed in claim 1, characterized in that: the conveying line guide rail (27) is in sliding connection with the main body frame II (28), and limiting blocks (35) are symmetrically arranged at two ends of the conveying line guide rail (27).

7. A lifting device with a secondary lifting platform as claimed in claim 1, characterized in that: the conveying line driving chain wheel (30) is rotationally connected with the main body frame II (28), and the main body frame II (28) is rotationally connected with the conveying line plate surface (32).