Floating platform with pre-tightening reset function

Abstract

The present application relates to the technical field of intelligent transfer equipment, and particularly relates to a floating platform with pre-tightening reset function, comprising: a floating platform; a support platform arranged below the floating platform, the support platform comprising a plurality of support points, a support mechanism being arranged between the support points and the floating platform, the support mechanism being used for connecting the floating platform and the support points and allowing displacement of the two within a first preset range; a reset assembly connected between the support platform and the floating platform, the reset assembly being configured to apply a pre-tightening force to the floating platform to make it have a reset tendency, so as to limit displacement of the floating platform relative to the support platform within a second preset range. The floating platform with pre-tightening reset function is provided to solve the problems that in the prior art, the floating platform lacks initial pre-tightening force, resulting in inaccurate reset position, and the floating function cannot be selectively locked according to working conditions.

Description

Technical Field

[0001] This invention relates to the field of intelligent transfer equipment technology, and in particular to a floating platform with a pre-tightening and reset function. Background Technology

[0002] In the field of intelligent transfer equipment technology, there are often differences in positioning accuracy during the handover process between different devices. When there is a positional deviation between the handling equipment and the docking station, the load will be subjected to lateral traction or sliding friction during the handover process, resulting in load damage or handover failure. To solve the above problems, existing technologies have proposed a technical solution of installing a floating platform on the handling equipment to compensate for the positioning error between the devices through the lateral displacement of the floating platform.

[0003] However, existing floating platforms have the following shortcomings in practical applications: Firstly, the reset mechanism is mostly a zero-position structure without preload, making it difficult for the floating platform to accurately return to its initial center position when the load is eccentric or the mounting surface is not level, affecting subsequent docking accuracy. Secondly, the single-point support structure of existing floating platforms can usually only achieve floating in one direction, requiring at least two sets of support points with different orientations to achieve omnidirectional floating. Furthermore, existing floating platforms lack controllable switching of floating function, leaving the platform in a floating state during load transportation, affecting transportation stability. Therefore, a floating platform that can provide preload at the initial position, possess omnidirectional floating capability, and selectively lock the floating function is needed to meet the accuracy requirements of load handover between equipment and the stability requirements of the transportation process under heavy-load and off-center-load conditions. Summary of the Invention

[0004] The purpose of this invention is to provide a floating platform with a pre-tightening and reset function to solve the problems in the prior art where the floating platform lacks an initial pre-tightening force, resulting in inaccurate reset position, and the floating function cannot selectively lock according to working conditions.

[0005] The technical solution of the present invention is: a floating platform with pre-tightening and reset function, comprising: Floating platform; A support platform is disposed below the floating platform. The support platform includes a plurality of support points. A support mechanism is provided between the support points and the floating platform. The support mechanism is used to connect the floating platform and the support points and allow the two to move within a first preset range. A reset assembly is connected between the support platform and the floating platform. The reset assembly is configured to apply a preload to the floating platform to give it a reset tendency, thereby limiting the displacement of the floating platform relative to the support platform within a second preset range. The first preset range is smaller than the second preset range.

[0006] Preferably, the reset assembly includes a lateral preload section movably connected to the support point, and a longitudinal floating section movably connected to the floating platform. The end of the longitudinal floating section away from the floating platform is movably connected to the transverse pretensioning section. A return spring is provided on the transverse pretensioning section between the longitudinal floating section and the support point. The return spring is used to apply pretensioning force.

[0007] Preferably, the transverse preload section includes a mounting assembly fixedly connected to the support point. A guide rod is connected to one end of the mounting assembly away from the support point. A sliding sleeve is sleeved on the guide rod. The return spring is located between the support point and the sliding sleeve. A second locking nut is threadedly connected to the guide rod on the side of the sliding sleeve opposite to the return spring. The preload of the return spring is adjusted by rotating and adjusting the position of the second locking nut on the guide rod. The longitudinal floating section includes a longitudinal sway joint bearing that floats through the floating platform. A first locking nut is threaded onto a section of the longitudinal sway joint bearing located below the floating platform. The lower section of the longitudinal sway joint bearing is sleeved on the sliding sleeve. Spacers are sleeved on both sides of the longitudinal sway joint bearing on the sliding sleeve. The effective sliding stroke of the sliding sleeve on the guide rod constitutes the second preset range.

[0008] Preferably, the guide rod is a stepped shaft structure, which includes a large-diameter section and a small-diameter section, wherein the axial length of the large-diameter section is less than the axial length of the small-diameter section; The large-diameter section is close to the support point, and the return spring is sleeved on the small-diameter section, with its two ends abutting against the large-diameter section and the sliding sleeve, respectively.

[0009] Preferably, a stepped hole is provided on the floating platform at the position corresponding to the support point. The stepped hole includes a large-diameter hole and a small-diameter hole arranged from top to bottom. An anti-tipping gasket is provided in the large-diameter hole. The outer diameter of the anti-tipping gasket is larger than the inner diameter of the small-diameter hole. The inner diameter of the large-diameter hole is larger than the outer diameter of the anti-tipping gasket. The radial gap formed between the inner wall of the large-diameter hole and the outer wall of the anti-tipping gasket is larger than the first preset range. An anti-overturning bolt is inserted through the center of the anti-overturning pad, the head of the anti-overturning bolt is hung above the anti-overturning pad, and the lower end of the anti-overturning bolt is threadedly connected to the support point.

[0010] Preferably, a blind mounting hole is provided on the side of the support point near the floating platform, a polyurethane pad is laid at the bottom of the blind mounting hole, a bullseye bearing is installed in the blind mounting hole on the polyurethane pad, and a rigid reinforcing plate is installed below the floating platform at a position opposite to the bullseye bearing.

[0011] Preferably, there are four sets of support points, evenly distributed below the floating platform. Each support point is connected to the floating platform by two sets of reset components, and the two sets of reset components are perpendicular to each other.

[0012] Preferably, the eight sets of reset components corresponding to the four sets of support points are arranged in a frame-like distribution, forming a rectangular four-corner structure on the horizontal plane.

[0013] Preferably, at least two sets of limiting mechanisms are configured to enable rigid connection and release functions between the support platform and the floating platform, including a docking structure connected to the support platform and a docking limiting sleeve connected to the floating platform.

[0014] Preferably, the docking structure includes a limiter fixing seat fixedly connected to the support platform, an electric push rod installed in the limiter fixing seat, and a limit pin driven by the electric push rod. The docking limiting sleeve and the limiting pin are coaxially arranged. The electric push rod drives the limiting pin to extend into or out of the docking limiting sleeve to achieve rigid connection and disconnection between the support platform and the floating platform.

[0015] Compared with the prior art, the advantages of the present invention are: (1) By setting up a support platform and a floating platform, and setting up a support mechanism between the support point of the support platform and the floating platform, the two are allowed to move within a first preset range. At the same time, a reset component is set up to apply a preload to the floating platform, so that the floating platform has a reset tendency. Thus, the omnidirectional floating function and automatic reset function of the floating platform are realized, which can compensate for the positioning error between the equipment and make the load handover smoother.

[0016] (2) By setting the support points to four groups evenly distributed, each support point is connected to the floating platform by two groups of mutually perpendicular reset components. The eight sets of reset components corresponding to the four support points form a rectangular four-corner structure on the horizontal plane, forming a closed mechanical frame, which is conducive to mutual restraint in the horizontal plane and improves the structure's resistance to eccentric load.

[0017] (3) By setting at least two sets of limiting mechanisms, including limiter fixing seat, electric push rod and limit pin, and docking limit sleeve set on the floating platform, the electric push rod drives the limit pin to extend into or out of the docking limit sleeve, realizing the rigid connection and release function between the support platform and the floating platform, so that the floating platform can selectively lock or release the floating function according to the working conditions, and improve the stability during the load transportation process.

[0018] (4) By independently configuring two sets of mutually perpendicular reset components at each support point, and combining the lateral and longitudinal joint bearing swing compensation, each individual support point has its own two-dimensional planar omnidirectional floating capability. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is a schematic diagram of the overall structure of the floating platform described in this invention; Figure 2 This is a cross-sectional view of the connection between the support platform and the floating platform described in this invention; Figure 3 This is a cross-sectional view of the location of the reset component described in this invention; Figure 4 This is a cross-sectional view of the location of the limiting mechanism described in this invention; Figure 5 For the present invention Figure 1 Enlarged view of region A in the middle; The components include: 1. Support platform; 11. Support point; 2. Floating platform; 3. Reset assembly; 31. Mounting assembly; 32. Longitudinal sway joint bearing; 33. First locking nut; 34. Guide rod; 35. Second locking nut; 36. Retaining ring; 37. Spacer ring; 38. Sliding sleeve; 39. Return spring; 310. Third locking nut; 311. Lateral sway joint bearing; 312. First mounting pin; 4. Limiting mechanism; 41. Limiter fixing seat; 42. Connecting seat; 43. Second mounting pin; 44. Electric push rod; 45. Limiting pin; 46. Guide sleeve; 47. Butt-connecting limit sleeve; 5. Polyurethane pad; 6. Bullseye bearing; 7. Rigid reinforcing plate; 8. Anti-tipping gasket; 9. Anti-tipping bolt. Detailed Implementation

[0020] The present invention will be further described in detail below with reference to specific embodiments: like Figures 1 to 5 As shown, a floating platform with pre-tightening and reset function includes a support platform 1, a floating platform 2, a reset component 3, and at least two sets of restraint mechanisms 4.

[0021] like Figure 1As shown, the support platform 1 is located below the floating platform 2. The support platform 1 includes several support points 11. A support mechanism is provided between the support points 11 and the floating platform 2. The support mechanism is used to connect the floating platform 2 and the support points 11 and allow the two to move within a first preset range.

[0022] like Figure 2 As shown, the cylindrical head at the upper end of the support point 11 extends upward into the lower end face of the floating platform 2. Therefore, a blind hole should be opened at the corresponding position at the bottom of the floating platform 2, and an annular gap should also be maintained between the inner wall of the blind hole and the upper end of the support point 11 to form a first preset range.

[0023] A stepped hole is provided on the floating platform 2 at the position corresponding to the support point 11. The stepped hole includes a large-diameter hole and a small-diameter hole arranged from top to bottom. An anti-tipping gasket 8 is provided in the large-diameter hole. The outer diameter of the anti-tipping gasket 8 is larger than the inner diameter of the small-diameter hole, and the inner diameter of the large-diameter hole is larger than the outer diameter of the anti-tipping gasket 8. The radial gap formed between the inner wall of the large-diameter hole and the outer wall of the anti-tipping gasket 8 is larger than the first preset range, so as to avoid rigid interference of the anti-tipping gasket 8 within the normal reset floating stroke of the floating platform 2.

[0024] The support point 11 is preferably a cylindrical structure, and the stepped hole is also preferably a cylindrical stepped hole. In this case, the first preset range is an annular gap. When the floating platform 2 floats relative to the support point 11, the inner wall of the large-diameter hole of the stepped hole will translate relative to the anti-tipping pad 8. When the floating distance reaches its maximum value, that is, when the outer wall of the cylindrical head at the upper end of the support point 11 makes rigid contact with the inner wall of the blind hole of the floating platform 2, the floating platform 2 will be stopped by mechanical interference, thereby accurately and reliably realizing the safety limiting function of the floating distance.

[0025] An anti-tipping bolt 9 is inserted through the center of the anti-tipping pad 8. The head of the anti-tipping bolt 9 hangs above the anti-tipping pad 8, and the lower end of the anti-tipping bolt 9 is threaded to the support point 11. When the floating platform 2 is subjected to eccentric load and tends to tilt, the anti-tipping pad 8 can abut against the bottom surface of the floating platform 2, and the axial tensile force of the anti-tipping bolt 9 forms a reverse constraint, thereby preventing the floating platform 2 from tilting or overturning due to eccentric load. A blind mounting hole is opened on the side of the support point 11 near the floating platform 2. A polyurethane pad 5 is laid at the bottom of the blind mounting hole, and a bullseye bearing 6 is installed on the polyurethane pad 5 inside the blind mounting hole. A rigid reinforcing plate 7 is installed below the floating platform 2 at a position opposite to the bullseye bearing 6.

[0026] Furthermore, to meet the high flatness requirement of the upper surface of the floating platform 2, a stop blind hole is coaxially opened above the stepped hole (i.e., the large-diameter hole) on the floating platform 2. The inner diameter of the stop blind hole is larger than the inner diameter of the large-diameter hole, and a mounting block with clearance fit is installed inside it to fill the hole. Since the polyurethane pad 5 has a certain elasticity, the bullseye bearing 6 can generate a small longitudinal compressive displacement (i.e., longitudinal floating range) relative to the support point 11. Therefore, during assembly, it is necessary to ensure that there is a safe distance between the bottom surface of the mounting block and the top surface of the anti-overturning bolt 9, and the height of this distance is not less than the longitudinal floating range, to prevent the floating platform 2 from jamming under pressure.

[0027] The polyurethane pad 5 has high hardness and relatively high elasticity compared to metal, which can compensate for the load imbalance caused by manufacturing errors in the bullseye bearing 6 and extend the service life of the overall support structure. The rigid reinforcing plate 7 is preferably connected to the floating platform 2 by countersunk screws. After heat treatment, the rigid reinforcing plate 7 has sufficient strength to meet the contact strength requirements with the bullseye bearing 6.

[0028] like Figure 1 and Figure 5 As shown, there are four sets of support points 11, evenly distributed below the floating platform 2. Each support point 11 is connected to the floating platform 2 by two sets of reset components 3, and the two sets of reset components 3 are perpendicular to each other. The eight sets of reset components 3 corresponding to the four sets of support points 11 are arranged in a frame-like distribution, forming a rectangular four-corner structure on the horizontal plane.

[0029] The two sets of reset components 3 are used in pairs. The floating platform 2 needs to overcome the preload of the reset components 3 before it can float. Two sets of reset components 3 are vertically arranged at each support point 11, and the eight sets of reset components 3 corresponding to the four support points 11 are distributed in a frame-like manner. This rectangular four-corner distribution structure can form a closed mechanical frame, forming symmetry and mutual restraint in the X and Y axes of the horizontal plane, which helps to force the floating platform 2 to maintain its initial center position when there is no external force. At the same time, in conjunction with the limiting mechanism 4, the floating platform 2 can be selectively locked or released according to the working conditions, limiting its displacement when floating is not required, making the load handling process more stable and safe.

[0030] When the floating platform 2 is subjected to a lateral force in any direction in the horizontal plane, the force in any direction will be naturally decomposed into mutually perpendicular X-axis and Y-axis components. Since each support point 11 has two independently configured sets of mutually perpendicular reset components 3, the sliding sleeves 38 inside can slide independently along their respective guide rods 34. This ensures that the X-axis component is responded to only by the X-axis reset component 3, and the Y-axis component is responded to only by the Y-axis reset component 3, with no interference between them (i.e., motion decoupling). Thus, each support point 11 possesses independent two-dimensional omnidirectional floating capability. During this process, the lateral yaw bearings 311 and longitudinal yaw bearings 32 at both ends of the reset component 3 can automatically adapt to the angular deviation caused by floating, eliminating the harmful lateral force on the reset spring 39 and ensuring smooth single-point omnidirectional floating. The four sets of support points 11 with single-point omnidirectional floating capability are stacked in a rectangular four-corner layout, not only achieving high-response omnidirectional floating but also forming a closed mechanical frame, significantly improving the platform's torsional resistance.

[0031] The reset assembly 3 is connected between the support platform 1 and the floating platform 2. The reset assembly 3 is configured to apply a preload to the floating platform 2 to induce a reset tendency, thereby limiting the displacement of the floating platform 2 relative to the support platform 1 within a second preset range. The effective sliding stroke of the sliding sleeve 38 on the guide rod 34 constitutes the second preset range. The first preset range is smaller than the second preset range.

[0032] Specifically, such as Figure 3 As shown, the reset assembly 3 includes a transverse preload section movably connected to the support point 11 and a longitudinal floating section movably connected to the floating platform 2. The end of the longitudinal floating section away from the floating platform 2 is movably connected to the transverse preload section. A reset spring 39 is provided on the transverse preload section between the longitudinal floating section and the support point 11. The reset spring 39 is used to apply preload force.

[0033] The transverse preload section includes a mounting assembly 31 fixedly connected to the support point 11. A guide rod 34 is connected to the end of the mounting assembly 31 furthest from the support point 11. A sliding sleeve 38 is fitted onto the guide rod 34. A return spring 39 is located between the support point 11 and the sliding sleeve 38. A second locking nut 35 is threaded onto the guide rod 34 on the side of the sliding sleeve 38 opposite to the return spring 39. A retaining ring 36 is provided between the second locking nut 35 and the sliding sleeve 38. The preload of the return spring 39 is adjusted by rotating and adjusting the position of the second locking nut 35 on the guide rod 34. The guide rod 34 has a stepped shaft structure, including a large-diameter section and a small-diameter section, with the axial length of the large-diameter section being less than the axial length of the small-diameter section. The large-diameter section is closer to the support point 11, and the return spring 39 is fitted onto the small-diameter section, with its two ends abutting against the large-diameter section and the sliding sleeve 38, respectively.

[0034] Specifically, the mounting assembly 31 includes a third locking nut 310, a yaw bearing 311, and a first mounting pin 312. The specific structure is as follows: one end of the yaw bearing 311 is connected to one side of the support point 11 and locked by the third locking nut 310; the other end of the yaw bearing 311 is connected to a guide rod 34 and fixed by the first mounting pin 312.

[0035] During initial assembly, the return spring 39 is at its natural length. By tightening the second locking nut 35, it moves along the guide rod 34 towards the support point 11. The second locking nut 35 pushes the sliding sleeve 38 to move synchronously through the retaining ring 36, and the sliding sleeve 38 compresses the return spring 39. When the compression reaches the set value, the tightening stops. At this time, the return spring 39 undergoes elastic deformation, generating a continuous elastic thrust on the sliding sleeve 38 in the direction of the support point 11. This elastic thrust is transmitted to the floating platform 2 through the sliding sleeve 38 and the longitudinal floating section, thereby forming a preload that forces the floating platform 2 to remain in its initial position. If the preload needs to be adjusted later, simply continue to tighten the second locking nut 35 to increase the compression and increase the preload, or untighten the second locking nut 35 in the opposite direction to release part of the compression and reduce the preload.

[0036] The longitudinal floating section includes a longitudinal swing joint bearing 32 that floats through the floating platform 2. A first locking nut 33 is threadedly connected to a section of the longitudinal swing joint bearing 32 located below the floating platform 2. The lower section of the longitudinal swing joint bearing 32 is sleeved on a sliding sleeve 38. Spacers 37 are sleeved on both sides of the sliding sleeve 38 located on the longitudinal swing joint bearing 32.

[0037] Due to the connection of the longitudinal rocker joint bearing 32, and because the support point 11 can float longitudinally within a small range relative to the floating platform 2, the longitudinal floating section allows the reset assembly 3 to swing within a small range in a plane perpendicular to the support plane. Simultaneously, combined with its connection to the support point 11 via the transverse preload section, the reset assembly 3, under preload, can swing in a plane parallel to the support plane. This swinging in both the transverse and longitudinal directions compensates for changes in the installation distance of the reset assembly 3 due to the omnidirectional floating of the floating platform 2, as well as installation height deviations caused by machining errors.

[0038] like Figure 1 and Figure 4As shown, the limiting mechanism 4 is configured to achieve rigid connection and release functions between the support platform 1 and the floating platform 2. It includes a docking structure connected to the support platform 1 and a docking limiting sleeve 47 connected to the floating platform 2. The docking structure includes a limiter fixing seat 41 fixedly connected to the support platform 1, an electric push rod 44 installed within the limiter fixing seat 41, and a limiting pin 45 driven by the electric push rod 44. The docking limiting sleeve 47 and the limiting pin 45 are coaxially arranged. The electric push rod 44 drives the limiting pin 45 to extend into or retract from the docking limiting sleeve 47 to achieve rigid connection and release between the support platform 1 and the floating platform 2.

[0039] Specifically, a connecting seat 42 is fixedly installed inside the lower part of the limiter fixing seat 41, and a guide sleeve 46 is fixedly installed inside the upper part of the limiter fixing seat 41; an electric push rod 44 is disposed above the connecting seat 42, and the bottom end and output end of the electric push rod 44 are respectively hinged to the connecting seat 42 and the limit pin 45 through the second mounting pin 43; the limit pin 45 and the guide sleeve 46 are clearance-fitted, and the electric push rod 44 is configured to drive the limit pin 45 to make a stable axial lifting and lowering movement along the guide sleeve 46.

[0040] When the floating platform 2 is in its initial position, the limiting pin 45 and the docking limiting sleeve 47 are coaxial or have a coaxial error of no more than 5 mm. When it is necessary to limit the floating of the floating platform 2, the electric push rod 44 extends and pushes the limiting pin 45 into the docking limiting sleeve 47. To achieve a good floating limiting function, each floating platform 2 is preferably equipped with two or more limiting mechanisms 4. When the limiting pins 45 of at least two limiting mechanisms 4 are inserted into the docking limiting sleeve 47, the support platform 1 and the floating platform 2 cannot produce displacement in the support plane, and the floating function is limited; when the limiting pins 45 of all limiting mechanisms 4 are withdrawn from the docking limiting sleeve 47, the floating platform 2 resumes its floating function. When there is a slight coaxial error between the limiting pin 45 and the docking limiting sleeve 47, the chamfered bevel on the limiting pin 45 will force the docking limiting sleeve 47 to align with the floating platform 2 coaxially.

[0041] Working principle: When the floating platform 2 and its load are not subjected to external lateral or deflection disturbances, the eight sets of reset components 3 at the four support points 11 are all in a pre-tightened equilibrium state. Since the reset spring 39 has a preset initial preload, this preload acts on the floating platform 2 through the sliding sleeve 38 and the longitudinal swing joint bearing 32, firmly constraining the floating platform 2 and maintaining it in an accurate initial center position. At this time, if the limiting mechanism 4 is activated, the electric push rod 44 drives the limit pin 45 to insert into the docking limit sleeve 47, achieving rigid locking between the support platform 1 and the floating platform 2, meeting the absolute stability requirements of the load during high-speed transportation.

[0042] When the limit pin 45 has been retracted and unlocked in advance, if there is a positioning error during the load handover between the handling equipment and the external docking station, the external equipment will apply a lateral pushing or pulling force to the load. Specifically, after the floating platform 2 is subjected to force, it begins to overcome the initial preload of the reset assembly 3, causing the sliding sleeve 38 to slide on the guide rod 34 to compress the reset spring 39, generating a slight displacement to compensate for the docking error.

[0043] The above embodiments are merely illustrative of the technical concept and features of the present invention, intended to enable those skilled in the art to understand the content of the present invention and implement it accordingly, and should not be construed as limiting the scope of protection of the present invention. It will be apparent to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of the present invention is defined by the appended claims rather than the foregoing description, and thus all changes falling within the meaning and scope of the equivalents of the claims are intended to be included within the present invention.

Claims

1. A floating platform with pre-tightening and reset function, characterized in that, include: Floating platform (2); A support platform (1) is provided below the floating platform (2). The support platform (1) includes several support points (11). A support mechanism is provided between the support points (11) and the floating platform (2). The support mechanism is used to connect the floating platform (2) and the support points (11) and allow the two to move within a first preset range. A reset assembly (3) is connected between the support platform (1) and the floating platform (2). The reset assembly (3) is configured to apply a preload to the floating platform (2) to give it a reset tendency, thereby limiting the displacement of the floating platform (2) relative to the support platform (1) within a second preset range. The first preset range is smaller than the second preset range.

2. A floating platform with pre-tightening and reset function according to claim 1, characterized in that: The reset assembly (3) includes a transverse preload section movably connected to the support point (11) and a longitudinal floating section movably connected to the floating platform (2); The end of the longitudinal floating section away from the floating platform (2) is movably connected to the transverse pretensioning section. A return spring (39) is provided on the transverse pretensioning section between the longitudinal floating section and the support point (11). The return spring (39) is used to apply pretensioning force.

3. A floating platform with pre-tightening and reset function according to claim 2, characterized in that: The transverse preload section includes a mounting assembly (31) fixedly connected to the support point (11). A guide rod (34) is connected to one end of the mounting assembly (31) away from the support point (11). A sliding sleeve (38) is sleeved on the guide rod (34). The return spring (39) is located between the support point (11) and the sliding sleeve (38). A second locking nut (35) is threadedly connected to the guide rod (34) on the side of the sliding sleeve (38) away from the return spring (39). The preload of the return spring (39) is adjusted by rotating and adjusting the position of the second locking nut (35) on the guide rod (34). The longitudinal floating section includes a longitudinal sway joint bearing (32) that floats through the floating platform (2). A first locking nut (33) is threaded onto a section of the longitudinal sway joint bearing (32) located below the floating platform (2). The lower section of the longitudinal sway joint bearing (32) is sleeved on the sliding sleeve (38). Spacer rings (37) are sleeved on both sides of the longitudinal sway joint bearing (32) on the sliding sleeve (38). The effective sliding stroke of the sliding sleeve (38) on the guide rod (34) constitutes the second preset range.

4. A floating platform with pre-tightening and reset function according to claim 3, characterized in that: The guide rod (34) is a stepped shaft structure, which includes a large diameter section and a small diameter section, wherein the axial length of the large diameter section is less than the axial length of the small diameter section; The large-diameter section is close to the support point (11), and the return spring (39) is sleeved on the small-diameter section, with its two ends abutting against the large-diameter section and the sliding sleeve (38) respectively.

5. A floating platform with pre-tightening and reset function according to claim 1, characterized in that: A stepped hole is provided on the floating platform (2) at the position corresponding to the support point (11). The stepped hole includes a large-diameter hole and a small-diameter hole arranged from top to bottom. An anti-overturning pad (8) is provided in the large-diameter hole. The outer diameter of the anti-overturning pad (8) is larger than the inner diameter of the small-diameter hole. The inner diameter of the large-diameter hole is larger than the outer diameter of the anti-overturning pad (8). The radial gap formed between the inner wall of the large-diameter hole and the outer wall of the anti-overturning pad (8) is larger than the first preset range. An anti-overturning bolt (9) is inserted through the center of the anti-overturning pad (8). The head of the anti-overturning bolt (9) is hung above the anti-overturning pad (8), and the lower end of the anti-overturning bolt (9) is threadedly connected to the support point (11).

6. A floating platform with pre-tightening and reset function according to claim 5, characterized in that: A blind mounting hole is provided on the side of the support point (11) near the floating platform (2). A polyurethane pad (5) is laid at the bottom of the blind mounting hole. A bullseye bearing (6) is installed in the blind mounting hole on the polyurethane pad (5). A rigid reinforcing plate (7) is installed below the floating platform (2) at a position opposite to the bullseye bearing (6).

7. A floating platform with pre-tightening and reset function according to claim 1, characterized in that: The support points (11) are provided in four groups, which are evenly distributed below the floating platform (2). Each support point (11) is connected to the floating platform (2) by two sets of reset components (3), and the two sets of reset components (3) are distributed perpendicularly to each other.

8. A floating platform with pre-tightening and reset function according to claim 7, characterized in that: The eight sets of reset components (3) corresponding to the four sets of support points (11) are arranged in a frame-like distribution, forming a rectangular four-corner structure on the horizontal plane.

9. A floating platform with pre-tightening and reset function according to claim 1, characterized in that, Also includes: At least two sets of limiting mechanisms (4) are configured to enable the rigid connection and release functions of the support platform (1) and the floating platform (2), including a docking structure connected to the support platform (1) and a docking limiting sleeve (47) connected to the floating platform (2).

10. A floating platform with pre-tightening and reset function according to claim 9, characterized in that: The docking structure includes a limiter fixing seat (41) fixedly connected to the support platform (1), an electric push rod (44) installed in the limiter fixing seat (41), and a limit pin (45) driven by the electric push rod (44). The docking limiting sleeve (47) and the limiting pin (45) are coaxially arranged. The electric push rod (44) drives the limiting pin (45) to extend into or out of the docking limiting sleeve (47) to achieve rigid connection and release between the support platform (1) and the floating platform (2).

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