Two-stage lifting and rotating combined platform

Abstract

The utility model discloses a two-stage lifting and rotating combined platform, comprising a rotating stage (1), and a fast lifting frame layer (2), a slow lifting frame layer (3), a fixed support frame layer (4) and a driving mechanism (7) which are sequentially mounted from the outside to the inside; the rotating stage (1) is arranged on the top of the fast lifting frame layer (2); a vertical guide component (5) and a double-speed lifting component (6) are arranged between the fast lifting frame layer (2), the slow lifting frame layer (3) and the fixed support frame layer (4); the double-speed lifting component (6) controls the lifting speed of the fast lifting frame layer (2) to be double the lifting speed of the slow lifting frame layer (3); the two-stage lifting and superimposing and rotating combination form can superimpose double speeds, thereby improving the performance effect of a matrix stage group, and at the same time, the rigidity of the equipment is enhanced in structure, and the system stability is good.

Description

Technical Field

[0001] The utility model belongs to the technical field of mechanical structures, and in particular relates to a two-stage lifting and rotating combined platform. Background Art

[0002] The existing lifting and rotating stage is generally a single-layer lifting and rotating function. The stroke and speed of the single-layer lifting are greatly limited and cannot meet the requirements of use. For example, Chinese patent CN113979390 A discloses a synchronous lifting device, including a primary steel frame and a secondary steel frame, which are connected by a chain system. When the primary frame is lifted, the secondary frame is lifted synchronously, and the movement speed and distance of the two sets of steel frames are the same. Although a high lifting stroke can be achieved, it cannot be lifted at a faster speed and does not have the function of rotation. Summary of the invention

[0003] The utility model aims to provide a two-stage lifting and rotating combined platform, a combination of two-stage lifting and superimposed rotation, the two-stage lifting can be superimposed at multiple speeds, thereby improving the performance effect of the matrix stage group, while the structure enhances the rigidity of the equipment and improves the system stability.

[0004] The technical solution provided by the utility model is as follows:

[0005] A two-stage lifting and rotating combined platform comprises a rotating stage 1, a fast lifting frame layer 2, a slow lifting frame layer 3, a fixed support frame layer 4 and a driving mechanism 7; the fixed support frame layer 4 is arranged on the base surface, the slow lifting frame layer 3 is sleeved on the outside of the fixed support frame layer 4; the fast lifting layer 2 is sleeved on the outside of the slow lifting frame layer 3; the rotating stage 1 is arranged on the top of the fast lifting frame layer 2;

[0006] A vertical guide assembly 5 is provided between the fixed support frame layer 4 and the slow lifting frame layer 3 to constrain the lifting of the slow lifting frame layer 3; a vertical guide assembly 5 is provided between the slow lifting frame layer 3 and the fast lifting frame layer 2 to constrain the lifting of the fast lifting frame layer 2;

[0007] A double-speed lifting component 6 is provided between the fast lifting frame layer 2, the slow lifting frame layer 3 and the fixed support frame layer 4; the lifting speed of the fast lifting frame layer 2 is controlled to be double the lifting speed of the slow lifting frame layer 3;

[0008] The driving mechanism 7 is fixed on the fixed support frame layer 4, and drives the double-speed lifting component 6 to drive the fast lifting frame layer 2 and the slow lifting frame layer 3 to rise and fall.

[0009] Preferably, the speed-up lifting assembly 6 comprises a vertical lifting mechanism, an upper chain 62 and an upper chain wheel 63;

[0010] The upper sprocket wheel 63 is installed on the upper part of the slow lifting frame layer 3, one end of the upper chain 62 is fixed to the fixed support frame layer 4, and the other end of the upper chain 62 is turned upward around the upper sprocket wheel 63 and turned downward to be fixed to the fast lifting frame layer 2;

[0011] The driving mechanism 7 drives the slow lifting frame layer 3 to rise through the vertical lifting motion mechanism, drives the upper sprocket 63 to pull the upper chain 62, and drives the fast lifting frame layer to rise at a speed twice that of the slow lifting frame layer 3.

[0012] Preferably, the speed-up lifting assembly 6 further includes a lower sprocket 64 and a lower chain 65;

[0013] The lower sprocket 64 is installed at the lower part of the slow lifting frame layer 3, one end of the lower chain 65 is fixed to the fixed support frame layer 4, and the other end of the lower chain 65 goes around the lower sprocket 64 downward and turns upward to be fixed to the fast lifting frame layer 2.

[0014] Preferably, the speed-doubling lifting assembly 6 includes two groups, which are symmetrically arranged on both sides.

[0015] Preferably, the vertical lifting motion mechanism adopts a driving gear motion mechanism 61, including a gear 611 and a rack 612, the gear 611 is fixed on the transmission shaft of the driving mechanism 7, and the rack 612 is fixed on the slow lifting frame layer 3; the driving mechanism 7 drives the gear 611 to rotate through the transmission shaft, and the gear 611 cooperates with the rack 612 to drive the slow lifting frame layer 3 to rise and fall.

[0016] Preferably, the vertical guide assembly 5 disposed between the fixed support frame layer 4 and the slow lifting frame layer 3 includes a plurality of groups, which are distributed in parallel along the fixed support frame layer 4 and the slow lifting frame layer 3;

[0017] The vertical guide components 5 arranged between the slow lifting frame layer 3 and the fast lifting frame layer 2 include multiple groups, which are distributed in parallel along the slow lifting frame layer 3 and the fast lifting frame layer 2.

[0018] Preferably, the fast lifting frame layer 2, the slow lifting frame layer 3 and the fixed support frame layer 4 are square frame structures, and the vertical guide components 5 are respectively arranged on the four sides or four corners of the square frame and are symmetrically arranged.

[0019] Preferably, the fast lifting frame layer 2, the slow lifting frame layer 3 and the fixed support frame layer 4 are circular frame structures, and the vertical guide components 5 are respectively arranged around the circular frames and are evenly distributed.

[0020] Preferably, the vertical guide assembly 5 includes a vertical guide rail 51 and a guide slider 52;

[0021] The vertical guide rail 51 is fixed to the inner side of the fast lifting frame layer 2, and the guide slider 52 is fixed to the outer side of the slow lifting frame layer 3; or; the guide slider 52 is fixed to the inner side of the fast lifting frame layer 2, and the vertical guide rail 51 is fixed to the outer side of the slow lifting frame layer 3;

[0022] The vertical guide rail 51 is fixed to the inner side of the slow lifting frame layer 3, and the guide slider 52 is fixed to the outer side of the fixed support frame layer 4; or; the guide slider 52 is fixed to the inner side of the slow lifting frame layer 3, and the vertical guide rail 51 is fixed to the outer side of the fixed support frame layer 4.

[0023] It can be seen from the technical solution provided by the above-mentioned utility model that the two-stage lifting and rotating combined platform provided by the embodiment of the utility model can make up for the defects of single-layer lifting, limited lifting stroke and speed of the lifting and rotating stage in the existing market. The combination of two-stage lifting and superimposed rotation improves the performance effect of the matrix stage group. The single-side multi-group combined ultra-high precision self-balancing compensation guide mechanism makes up for the instability of the existing guide mechanism and enhances the rigidity of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 This is a schematic diagram of the structure of the initial state of the two-stage lifting and rotating combined platform of the embodiment of the utility model, wherein the vertical guide assembly is not shown on the right side;

[0026] Figure 2 This is a schematic diagram of the structure of the two-stage lifting and rotating combined platform in the embodiment of the utility model in the ascending working state, wherein the vertical guide component is not shown on the right side;

[0027] Figure 3 It is a schematic diagram of the three-dimensional structure of the two-stage lifting and rotating combined platform according to an embodiment of the utility model. DETAILED DESCRIPTION

[0028] The following is a clear and complete description of the technical solutions in the embodiments of the utility model in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the protection scope of the utility model.

[0029] First, the terms that may be used in this article are explained as follows:

[0030] The term “and / or” means that either or both of them can be realized at the same time. For example, X and / or Y means both “X” or “Y” and “X and Y”.

[0031] The terms "include", "comprises", "contains", "has" or other descriptions with similar semantics should be interpreted as non-exclusive inclusion. For example, including certain technical feature elements (such as raw materials, components, ingredients, carriers, dosage forms, materials, dimensions, parts, components, mechanisms, devices, steps, procedures, methods, reaction conditions, processing conditions, parameters, algorithms, signals, data, products or products, etc.) should be interpreted as including not only certain technical feature elements explicitly listed, but also other technical feature elements known in the art that are not explicitly listed.

[0032] The term "consisting of..." means excluding any technical feature elements not explicitly listed. If this term is used in a claim, it will make the claim closed, so that it does not contain technical feature elements other than the technical feature elements explicitly listed, except for the conventional impurities related to them. If this term only appears in a clause of a claim, it only limits the elements explicitly listed in the clause, and the elements recorded in other clauses are not excluded from the overall claim.

[0033] The term "parts by mass" refers to the mass ratio relationship between multiple components. For example, if it is described that component X is x parts by mass and component Y is y parts by mass, then the mass ratio of component X to component Y is x:y. 1 part by mass can represent any mass, for example, 1 part by mass can be represented as 1 kg or 3.1415926 kg. The sum of the parts by mass of all components is not necessarily 100 parts, but can be greater than 100 parts, less than 100 parts or equal to 100 parts. Unless otherwise specified, the parts, proportions and percentages described herein are all measured by mass.

[0034] Unless otherwise specified or limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example: it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this article can be understood according to specific circumstances.

[0035] When concentration, temperature, pressure, size or other parameters are expressed in the form of a numerical range, the numerical range should be understood to specifically disclose all ranges formed by the pairing of any upper limit, lower limit, and preferred value in the numerical range, regardless of whether the range is explicitly stated; for example, if a numerical range of "2 to 8" is stated, the numerical range should be interpreted as including ranges such as "2 to 7", "2 to 6", "5 to 7", "3 to 4 and 6 to 7", "3 to 5 and 7", "2 and 5 to 7", etc. Unless otherwise specified, the numerical ranges stated herein include both their end values ​​and all integers and fractions within the numerical range.

[0036] The orientation or position relationship indicated by terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc. are based on the orientation or position relationship shown in the drawings and are only for the convenience and simplification of description, and do not explicitly or implicitly indicate that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation of this document.

[0037] The embodiments of the utility model will be described in further detail below in conjunction with the accompanying drawings.

[0038] Embodiment 1

[0039] like Figures 1 to 3 As shown, a two-stage lifting and rotating combined platform is applied to the structural design of a multi-stage, including a rotating stage 1, a fast lifting frame layer 2, a slow lifting frame layer 3, and a fixed support frame layer 4; the fixed support frame layer 4 is arranged on the foundation surface, and specifically the fixed support frame layer 4 is fixed on the foundation, and is located in the inner layer of the multi-stage, and cannot move up and down, and is used as a fixed support base. The slow lifting frame layer 3 is sleeved on the outside of the fixed support frame layer 4; the fast lifting layer 2 is sleeved on the outside of the slow lifting frame layer 3; the rotating stage 1 is arranged on the top of the fast lifting frame layer 2; it is used to realize the rotation function of the stage, and finally realize the combined stage form of two-stage lifting, superimposed rotation. The connection and rotation principle and structural design of the rotating stage 1 and the fast lifting frame layer 2 are all well-known technologies in the field, and will not be repeated.

[0040] In this example, a vertical guide component 5 is arranged between the fixed support frame layer 4 and the slow lifting frame layer 3 to constrain the lifting of the slow lifting frame layer 3; a vertical guide component 5 is arranged between the slow lifting frame layer 3 and the fast lifting frame layer 2 to constrain the lifting of the fast lifting frame layer 2; specifically, in this example, the vertical guide component 5 arranged between the fixed support frame layer 4 and the slow lifting frame layer 3 includes multiple groups, which are distributed in parallel between the fixed support frame layer 4 and the slow lifting frame layer 3; the vertical guide component 5 arranged between the slow lifting frame layer 3 and the fast lifting frame layer 2 includes multiple groups, which are distributed in parallel between the slow lifting frame layer 3 and the fast lifting frame layer 2.

[0041] According to the usual structural design, the frame structure of the fast lifting frame layer 2, the slow lifting frame layer 3 and the fixed support frame layer 4 is usually a square or circular frame.

[0042] As described above, the fast lifting frame layer 2, the slow lifting frame layer 3 and the fixed support frame layer 4 are a square frame structure, and the vertical guide components 5 are respectively arranged on the four sides or four corners of the square frame, and are symmetrically arranged. Specifically, two or four sides can be set, and they are symmetrically arranged; or three sides can be set, of which two sides are the main guides, symmetrically arranged, and the third side is auxiliary guide. It is also possible to set two corners or four corners, symmetrically arranged; or it can be a triangle, of which two corners are the main guides, symmetrically arranged, and the third corner is auxiliary guide. The specific guide structure and the structural design of the principle are well-known technologies in the field and will not be repeated.

[0043] As described above, the fast lifting frame layer 2, the slow lifting frame layer 3 and the fixed support frame layer 4 are circular frame structures, and the vertical guide components 5 are respectively arranged around the circular frame and are evenly arranged. Generally, three or four groups of vertical guide components 5 are arranged. The specific guide structure and the structural design of the principle are all well-known technologies in the art and will not be repeated here.

[0044] The vertical guide assembly 5 in this example includes a vertical guide rail 51 and a guide slider 52; the vertical guide rail 51 is fixed to the inner side of the fast lifting frame layer 2, and the guide slider 52 is fixed to the outer side of the slow lifting frame layer 3; or; the guide slider 52 is fixed to the inner side of the fast lifting frame layer 2, and the vertical guide rail 51 is fixed to the outer side of the slow lifting frame layer 3;

[0045] The vertical guide rail 51 is fixed on the inner side of the slow lifting frame layer 3, and the guide slider 52 is fixed on the outer side of the fixed support frame layer 4; or; the guide slider 52 is fixed on the inner side of the slow lifting frame layer 3, and the vertical guide rail 51 is fixed on the outer side of the fixed support frame layer 4.

[0046] The guide slider 52 moves up and down on the vertical guide rail 51, thereby realizing the guiding function of the fast lifting frame layer 2 and the slow lifting frame layer 3. This combined guide structure of multiple sets of vertical guide rails 51 and guide sliders 52 improves the rigidity of the equipment and enhances the stability of the equipment.

[0047] A double-speed lifting component 6 is provided between the fast lifting frame layer 2, the slow lifting frame layer 3 and the fixed support frame layer 4; the lifting speed of the fast lifting frame layer 2 is controlled to be twice as fast as the lifting speed of the slow lifting frame layer 3; the driving mechanism 7 is fixed on the fixed support frame layer 4, and drives the double-speed lifting component 6 to drive the fast lifting frame layer 2 and the slow lifting frame layer 3 to rise and fall.

[0048] In this example, the speed-up lifting assembly 6 includes a vertical lifting motion mechanism, an upper chain 62 and an upper sprocket 63; the upper sprocket 63 is installed on the upper part of the slow-speed lifting frame layer 3. The specific installation method and the design of the shaft system components are well-known technologies in the field and will not be repeated here.

[0049] One end of the upper chain 62 is fixed to the fixed support frame layer 4, and the inner end fixed position 621 of the upper chain is set on the outer side of the upper middle part of the fixed support frame layer 4. Figure 1 , when the two-stage lifting and rotating combined platform is in the initial state of descent, the fixed position 621 of the inner end of the upper chain should be lower than the upper sprocket 63, and the sprocket wrap angle should be greater than 120°, that is, the single-sided wrap angle should be greater than 60°. The sprocket wrap angle in this example is basically close to 180°. Specifically, the larger the wrap angle is, the better, provided that the structural requirements are met. The specific design can be made based on the actual structural dimensions, which are all known technologies in the art and will not be described in detail. It can be fixed by a chain fixing device, and the specific structural design of the chain fixing device is a known technology in the art and will not be described in detail.

[0050] The other end of the upper chain 62 passes through the upper sprocket wheel 63 upward and turns downward, and is fixed to the fast lifting frame layer 2; the fixed position 622 of the outer end of the upper chain is set on the inner side of the middle and lower part of the fast lifting frame layer 2, and the specific position is referenced Figure 2 , when the two-stage lifting and rotating combined platform is in the rising working state, the fixed position 622 of the outer end of the upper chain should be lower than the upper sprocket 63, and ensure that the sprocket wrap angle is greater than 120°, that is, the single-sided wrap angle is greater than 60°. The sprocket wrap angle in this example is basically close to 180°. Specifically, the larger the wrap angle is, the better, under the premise of meeting the structural requirements. The specific design can be based on the actual structural dimensions, which are all well-known technologies in the field and will not be repeated here. It can be fixed by a chain fixing device, and the specific structural design of the chain fixing device is well-known technology in the field and will not be repeated here.

[0051] In addition, the speed lifting assembly 6 also includes a lower sprocket 64 and a lower chain 65; the lower sprocket 64 is installed at the lower part of the slow lifting frame layer 3, and the specific installation method and the design of the shaft system components are well-known technologies in the field and will not be repeated.

[0052] One end of the lower chain 65 is fixed to the fixed support frame layer 4, and the fixed position 651 of the inner end of the lower chain is set on the outer side of the upper middle part of the fixed support frame layer 4. The specific position is as follows: Figure 2 When the two-stage lifting and rotating combined platform is in the ascending working state, the fixed position 651 of the inner end of the lower chain should be higher than the lower sprocket 64, and the sprocket wrap angle should be greater than 120°, that is, the wrap angle on one side should be greater than 60°. Specifically, the larger the wrap angle, the better under the premise of meeting the structural requirements. The sprocket wrap angle in this example is basically close to 180°. It can be designed according to the actual structural dimensions, which are all well-known technologies in the field and will not be described in detail. It can be fixed by a chain fixing device, and the specific structural design of the chain fixing device is well-known technology in the field and will not be described in detail.

[0053] The other end of the lower chain 65 passes downward around the lower sprocket 64 and turns upward, and is fixed to the fast lifting frame layer 2. The fixed position 652 of the outer end of the lower chain is set on the inner side of the middle and lower part of the fast lifting frame layer 2. The specific position is referenced Figure 1 , when the secondary lifting and rotating combined platform is in the initial state of descent, the fixed position 652 of the outer end of the lower chain should be higher than the lower sprocket 64, and the sprocket wrap angle should be greater than 120°, that is, the wrap angle on one side should be greater than 60°. Specifically, the larger the wrap angle, the better, provided that the structural requirements are met. The sprocket wrap angle in this example is basically close to 180°. The specific design can be made according to the actual structural dimensions, which are all known technologies in the art and will not be described in detail. It can be fixed by a chain fixing device, and the specific structural design of the chain fixing device is known technology in the art and will not be described in detail.

[0054] The lower sprocket 64 and the lower chain 65 ensure that the overall structure is more stable when lifted and lowered, and play the role of auxiliary support. At the same time, it should be noted that for safety and reliability, the upper chain 62 and the lower chain 65 can adopt the form of multiple chains in parallel.

[0055] In this example, the speed-doubling lifting assembly 6 includes two groups, which are symmetrically arranged on both sides to ensure the balance of movement.

[0056] In this example, the vertical lifting motion mechanism adopts a driving gear motion mechanism 61, including a gear 611 and a rack 612. The gear 611 is fixed on the transmission shaft 71 of the driving mechanism 7, and the rack 612 is fixed on the slow lifting frame layer 3 and fixed in the middle. The length and stroke of the rack 612 meet the needs of lifting and lowering, and it is arranged vertically; the driving mechanism 7 drives the gear 611 to rotate through the transmission shaft 71, and the gear 611 and the rack 612 cooperate to drive the slow lifting frame layer 3 to lift and lower.

[0057] Of course, the vertical lifting motion mechanism can also adopt hydraulic cylinders, screws, electric push rods and other mechanisms, all of which fall within the protection scope of this utility model patent.

[0058] The driving mechanism 7 drives the slow lifting frame layer 3 to rise through the vertical lifting motion mechanism, drives the upper sprocket 63 to pull the upper chain 62, and drives the fast lifting frame layer to rise at a speed twice that of the slow lifting frame layer 3.

[0059] How it works

[0060] like Figure 1 As shown, the two-stage lifting and rotating combined platform is in the initial state of descent. If it needs to rise, the motor of the driving mechanism 7 is started, and the motor drives the transmission shaft 71 to rotate forward, and the slow lifting frame layer 3 is driven to move upward through the gear movement mechanism 61. The upper sprocket 63 installed on the slow lifting frame layer 3 moves upward, pulling the upper chain 62. At the same time, the upper chain 62 carries the slow lifting frame layer 3 and other equipment on it, and the inner chain becomes longer and the outer chain becomes shorter. Pull the fast lifting frame layer 2 upward to the working position, the motor stops working, and the fast lifting frame layer 2 is locked at the working position. Specifically, a locking mechanism can be added.

[0061] At this point, it may be possible to enable rotation of stage 1.

[0062] If it is necessary to descend, the motor of the driving mechanism 7 is started in reverse, and the motor drives the transmission shaft 71 to rotate in reverse, driving the slow lifting frame layer 3 to move downward through the gear movement mechanism 61, and the lower sprocket 64 installed below the slow lifting frame layer 3 moves downward, pulling the lower chain 65. At the same time, the lower chain 65 carries the slow lifting frame layer 3 and other equipment on it, and the outer chain becomes longer and the inner chain becomes shorter. Pull the fast lifting frame layer 2 downward to the initial position, and the motor stops working.

[0063] According to the principle of movable pulley:

[0064] S = n × h;

[0065] S, the moving distance of the free end of the chain (rope), that is, the distance that the fast lifting frame layer 2 moves upward;

[0066] h, the distance the object moves, that is, the distance the slow lifting frame layer 3 moves upward;

[0067] n, the number of chain (rope) segments on the movable pulley, in this case it is 2.

[0068] Because the above formula is an ideal condition, that is, when the chains (ropes) on both sides are parallel to each other, the sprocket angle in this example is basically close to 180°, and the chains on both sides are close to parallel. According to the above formula, the distance moved by the fast lifting frame layer 2 is basically close to (can be understood as equal to) twice the distance moved by the slow lifting frame layer 3.

[0069] Beneficial Effects

[0070] (1) Multiple groups of vertical guide components 5 can be self-balanced and compensate each other to achieve precise guidance, improve the rigidity of the equipment, enhance the stability of the equipment, and ensure safe use.

[0071] (2) The two-stage lifting stage is superimposed with the stage rotation function to form a matrix stage cluster, which improves the performance effect of the equipment, enhances the artistic expression form, and meets different performance needs.

[0072] The above is only a preferred specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed in the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A two-stage lifting and rotating combined platform, characterized in that: The invention comprises a rotating stage (1), a fast lifting frame layer (2), a slow lifting frame layer (3), a fixed support frame layer (4) and a driving mechanism (7); the fixed support frame layer (4) is arranged on a base surface, the slow lifting frame layer (3) is sleeved on the outside of the fixed support frame layer (4); the fast lifting frame layer (2) is sleeved on the outside of the slow lifting frame layer (3); the rotating stage (1) is arranged on the top of the fast lifting frame layer (2); A vertical guide assembly (5) is arranged between the fixed support frame layer (4) and the slow lifting frame layer (3) to constrain the lifting of the slow lifting frame layer (3); a vertical guide assembly (5) is arranged between the slow lifting frame layer (3) and the fast lifting frame layer (2) to constrain the lifting of the fast lifting frame layer (2); A double-speed lifting component (6) is provided between the fast lifting frame layer (2), the slow lifting frame layer (3) and the fixed support frame layer (4); the lifting speed of the fast lifting frame layer (2) is controlled to be double the lifting speed of the slow lifting frame layer (3); The driving mechanism (7) is fixed on the fixed support frame layer (4), and drives the double-speed lifting component (6) to drive the fast lifting frame layer (2) and the slow lifting frame layer (3) to rise and fall.

2. The two-stage lifting and rotating combined platform according to claim 1 is characterized in that: The speed-up lifting assembly (6) comprises a vertical lifting mechanism, an upper chain (62) and an upper chain wheel (63); The upper sprocket wheel (63) is installed on the upper part of the slow lifting frame layer (3), one end of the upper chain (62) is fixed to the fixed support frame layer (4), and the other end of the upper chain (62) passes through the upper sprocket wheel (63) upwards and turns downwards to be fixed to the fast lifting frame layer (2); The driving mechanism (7) drives the slow lifting frame layer (3) to rise through the vertical lifting motion mechanism, drives the upper chain wheel (63) to pull the upper chain (62), and drives the fast lifting frame layer (2) to rise at a speed twice that of the slow lifting frame layer (3).

3. The two-stage lifting and rotating combined platform according to claim 2 is characterized in that: The speed-up lifting assembly (6) further comprises a lower sprocket (64) and a lower chain (65); The lower sprocket (64) is installed at the lower part of the slow lifting frame layer (3), one end of the lower chain (65) is fixed to the fixed support frame layer (4), and the other end of the lower chain (65) passes downward around the lower sprocket (64), turns upward, and is fixed to the fast lifting frame layer (2).

4. The two-stage lifting and rotating combined platform according to claim 2 is characterized in that: The speed-doubling lifting assembly (6) comprises two groups, which are symmetrically arranged on both sides.

5. The two-stage lifting and rotating combined platform according to claim 2, 3 or 4, characterized in that: The vertical lifting motion mechanism adopts a driving gear motion mechanism (61), including a gear (611) and a rack (612), wherein the gear (611) is fixed on a transmission shaft of a driving mechanism (7), and the rack (612) is fixed on the slow lifting frame layer (3); the driving mechanism (7) drives the gear (611) to rotate via the transmission shaft, and the gear (611) cooperates with the rack (612) to drive the slow lifting frame layer (3) to rise and fall.

6. The two-stage lifting and rotating combined platform according to claim 1, 2, 3 or 4, characterized in that: The vertical guide components (5) arranged between the fixed support frame layer (4) and the slow lifting frame layer (3) include a plurality of groups, which are distributed in parallel along the fixed support frame layer (4) and the slow lifting frame layer (3); The vertical guide components (5) arranged between the slow lifting frame layer (3) and the fast lifting frame layer (2) include multiple groups, which are distributed in parallel along the slow lifting frame layer (3) and the fast lifting frame layer (2).

7. The two-stage lifting and rotating combined platform according to claim 6 is characterized in that: The fast lifting frame layer (2), the slow lifting frame layer (3) and the fixed support frame layer (4) are square frame structures, and the vertical guide components (5) are respectively arranged on the four sides or four corners of the square frame and are symmetrically arranged.

8. The two-stage lifting and rotating combined platform according to claim 6 is characterized in that: The fast lifting frame layer (2), the slow lifting frame layer (3) and the fixed support frame layer (4) are circular frame structures, and the vertical guide components (5) are respectively arranged around the circular frames and are evenly distributed.

9. The two-stage lifting and rotating combined platform according to claim 6, characterized in that: The vertical guide assembly (5) comprises a vertical guide rail (51) and a guide slide block (52); The vertical guide rail (51) is fixed to the inner side of the fast lifting frame layer (2), and the guide slider (52) is fixed to the outer side of the slow lifting frame layer (3); or; the guide slider (52) is fixed to the inner side of the fast lifting frame layer (2), and the vertical guide rail (51) is fixed to the outer side of the slow lifting frame layer (3); The vertical guide rail (51) is fixed to the inner side of the slow lifting frame layer (3), and the guide slider (52) is fixed to the outer side of the fixed support frame layer (4); or; the guide slider (52) is fixed to the inner side of the slow lifting frame layer (3), and the vertical guide rail (51) is fixed to the outer side of the fixed support frame layer (4).

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