A floating support device

Abstract

This invention discloses a floating support device that solves the problems of time-consuming and labor-intensive use of floating support components and the inability to tighten screws on large workpieces. Specifically, it includes a support base, a lifting ring, and a universal plate arranged in parallel from bottom to top; a guide sleeve fitted around the lifting ring; M spring assemblies evenly distributed between the lifting ring and the support base; and a locking mechanism located on one side of the guide sleeve, where M ≥ 3. The guide sleeve is fixedly connected to the support base and has a first through hole on its side wall. A gap exists between the lifting ring and the guide sleeve, and a third inclined surface is provided on the outer wall of the lifting ring. The top of the lifting ring has an inner conical surface and is embedded with multiple balls. The bottom of the universal plate has an outer conical surface and contacts the balls. N top pins are provided on the top of the universal plate, where N ≥ 3. The locking mechanism includes an operating component and a locking pin. One end of the operating component is fixedly connected to the locking pin, and the other end is the operating end. The other end of the locking pin has a fourth inclined surface that abuts against the third inclined surface. The locking pin is located within the first through hole.

Description

Technical Field

[0001] This invention relates to floating support technology, and more specifically to a floating support device. Background Technology

[0002] Floating supports are commonly used fixture components in machining. Figure 1 Here is a structural diagram of an existing floating support component, such as... Figure 1 As shown, the existing floating support includes a support 01, a top pin 02, a spring 03, and a screw 04. A circular deep groove 011 is formed on the support 01, and a threaded hole 012 is formed on the side wall of the circular deep groove 011. The spring 03 is located at the lower end of the circular deep groove 011, and the top pin 02 is located at the upper end of the circular deep groove 011. The lower end of the spring 03 abuts against the bottom of the circular deep groove 011, and its upper end abuts against the bottom end of the top pin 02. The top end of the top pin 02 is used to support the workpiece. A first inclined surface 021 is provided on the side wall of the top pin 02. The lower end of the first inclined surface 021 is close to the axis of the top pin 02, and the upper end is far from the axis of the top pin 02. The screw 04 is located inside the threaded hole 012, and its tail is provided with a second inclined surface 041, with the first inclined surface 021 and the second inclined surface 041 abutting and engaging. In use, for a typical round workpiece, at least three of the aforementioned floating supports are required, evenly distributed around its circumference. Initial balance adjustment is then performed using spring 03. Next, the screws 04 on each floating support are tightened. During tightening, the first inclined surface 021 presses against the second inclined surface 041, causing the top pin 02 to move upwards, thus pressing and supporting the workpiece. This means that supporting a single workpiece requires at least 2 × 3 = 6 operations for the entire assembly and disassembly process, which is time-consuming and labor-intensive. Furthermore, the floating supports are typically located near the center of the workpiece; for larger workpieces, it is impossible to reach under the workpiece to tighten the screws, causing numerous difficulties in the support operation. Summary of the Invention

[0003] The purpose of this invention is to provide a floating support device to solve the technical problems of existing floating support components being time-consuming and labor-intensive to use, and for larger workpieces, it being impossible for a person to reach the bottom of the workpiece to tighten the screws, which brings many troubles to the support work.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A floating support device is characterized in that it includes a support base, a lifting ring and a universal plate arranged in parallel from bottom to top, a guide sleeve fitted on the outside of the lifting ring, M spring assemblies arranged between the lifting ring and the support base, and a locking mechanism arranged on one side of the guide sleeve, where M≥3;

[0006] The guide sleeve is fixedly connected to the support base, and a first through hole is provided on its side wall;

[0007] M spring assemblies are evenly distributed around the lifting ring to provide a buffering force to the lifting ring;

[0008] A gap is provided between the lifting ring and the guide sleeve. The outer wall of the lifting ring is provided with a third inclined surface corresponding to the first through hole and inclined at the lower end toward its axis. The top of the lifting ring is set as an inner conical surface with the large end facing upward. Multiple balls are evenly embedded around the inner conical surface.

[0009] The bottom of the universal plate is configured as an outward conical surface with the large end facing upward, and the outward conical surface contacts the ball bearing; N top pins are evenly distributed around the top of the universal plate, where N≥3; the N top pins are used to support the workpiece;

[0010] The locking mechanism includes an operating component and a locking pin; one end of the operating component is fixedly connected to one end of the locking pin, and the other end is the operating end; the other end of the locking pin is provided with a fourth inclined surface; the locking pin is disposed in the first through hole, and the fourth inclined surface abuts against the third inclined surface.

[0011] The above structure can save working time and human resources, while also improving the convenience of supporting operations.

[0012] Furthermore, in order to prevent chips from the workpiece during the cutting process from affecting the spring assembly, the present invention makes the following improvements:

[0013] The spring assembly includes a chip-proof ring, a spring, and a spring cover, all with their axes aligned on the same straight line.

[0014] The bottom of the anti-chip ring is fixedly connected to the support base;

[0015] The bottom end of the spring is installed inside the anti-chip ring, and the top end extends out of the anti-chip ring;

[0016] The spring cover covers the spring, with its top contacting the bottom of the lifting ring and its bottom fitted inside the anti-chip ring; a buffer space is provided between the spring cover and the support base.

[0017] Furthermore, to improve the stability of the spring assembly and to connect the guide sleeve to the support base, the present invention makes the following improvements:

[0018] The guide sleeve is fixedly connected to the support base through M support components;

[0019] Each of the M support components corresponds to one of the M spring components;

[0020] The support assembly includes a support column, an upper connecting screw, and a lower connecting screw; the upper and lower ends of the support column are respectively fixedly connected to the guide sleeve and the support base by the upper connecting screw and the lower connecting screw.

[0021] The anti-chip ring, spring, and spring cover are all fitted onto the corresponding support column.

[0022] Furthermore, to prevent the universal joint from detaching from the entire device under the force of the spring, the present invention makes the following improvements:

[0023] The top of the guide sleeve is provided with an S-shaped limiting piece;

[0024] One end of the limiting piece is fixedly connected to the guide sleeve, and the other end is located above the universal plate, which is used to limit the lifting range of the universal plate.

[0025] Furthermore, to prevent the universal joint from rotating circumferentially, the present invention makes the following improvements:

[0026] There are N limiting pieces, and each of them corresponds one-to-one with one of the N top pins;

[0027] The other end of the limiting piece is provided with a groove; the groove is engaged with the outer circumferential surface of the corresponding top pin.

[0028] Furthermore, to make the ball bearings run more smoothly, the present invention has made the following improvements:

[0029] The outer conical surface is designed to match the ball bearing.

[0030] Furthermore, to ensure a more stable locking pin, the present invention has made the following improvements:

[0031] The locking mechanism also includes a set screw;

[0032] The top or bottom of the guide sleeve is provided with a second through hole that communicates with the first through hole;

[0033] The locking pin has a plane on its side wall that corresponds to the second through hole;

[0034] The set screw is disposed in the second through hole and contacts the plane.

[0035] Furthermore, in order to improve the strength of the operating components, the present invention has made the following improvements:

[0036] The operating components include an operating screw, a transmission screw, a threaded support, and a protective sleeve.

[0037] One end of the operating screw is detachably connected to one end of the transmission screw, and the other end is the operating end;

[0038] The other end of the transmission screw contacts the end face of the locking pin away from the guide sleeve;

[0039] The threaded support is fitted onto the other end of the transmission screw and the locking pin;

[0040] The protective sleeve is fitted over the threaded support, one end of the transmission screw, and the operating screw.

[0041] Furthermore, the transmission screw includes a screw rod and a screw head whose axes are on the same straight line;

[0042] One end of the screw contacts the locking pin, and the other end is connected to one end of the screw head; the radius of the screw head is larger than the radius of the screw, so that an annular stepped surface is formed between the screw head and the screw.

[0043] The inner wall of the protective sleeve is provided with annular protrusions around its circumference; the annular protrusions are in contact with the annular stepped surface;

[0044] The other end of the screw head has a square hole at its center;

[0045] The operating screw has a square post at the center of one end that mates with the square hole.

[0046] Furthermore, a limiting groove is provided on the outer wall of the lifting ring, and the length direction of the limiting groove is parallel to the axis of the lifting ring;

[0047] The guide sleeve is also provided with a third through hole corresponding to the limiting groove on its side wall;

[0048] A limiting screw is provided in the third through hole, and one end of the limiting screw near the lifting ring extends into the limiting groove;

[0049] The third through hole and the first through hole are located at opposite ends of the diameter of the guide sleeve.

[0050] The beneficial effects of this invention are:

[0051] 1. This invention features a parallel support base, a lifting ring, and a universal joint. Multiple spring assemblies are evenly distributed between the lifting ring and the support base. When the universal joint is unloaded, all spring assemblies are fully released. When a workpiece is loaded onto the universal joint, the force generated by the workpiece's weight is transmitted downwards to the universal joint. While pressing down on the lifting ring, the universal joint also adjusts its posture towards stability. When the workpiece's weight and the spring force of the spring assemblies reach equilibrium, the lifting ring is locked in one go by the locking mechanism. This floating support device requires only one assembly and disassembly process, totaling two steps, significantly saving working time and labor costs. Furthermore, the locking mechanism extends from the bottom of the workpiece, making the locking operation easier and improving its operability.

[0052] 2. The present invention provides a guide sleeve on the outside of the lifting ring, which guides the lifting ring in the lifting direction, so that the lifting ring will not move laterally, thus improving the stability of the floating support device.

[0053] 3. The present invention has an inner conical surface at the top of the lifting ring that mates with the outer conical surface of the bottom of the universal plate, and ball bearings are also provided on the inner conical surface, which makes the attitude adjustment of the universal plate smoother and the adjustment result more stable.

[0054] 4. The spring assembly of the present invention is also provided with a chip-proof ring to prevent chips generated during the cutting process from entering the spring cover and affecting the spring's operation, and also to prevent affecting the movement of the spring cover.

[0055] 5. The present invention provides a support component between the guide sleeve and the support base, which not only fixes the guide sleeve and the support base together, but also the support column guides the spring and the spring cover, achieving two goals at once. This design is reasonable and ingenious.

[0056] 6. The present invention provides an S-shaped limiting piece at the top of the guide sleeve. This limiting piece limits the lifting range of the universal plate and can prevent the universal plate from detaching from the entire floating support device under the action of the spring assembly.

[0057] 7. The present invention also provides a groove on the other end of the limiting piece, which is used to lock onto the outer circumferential surface of the corresponding top pin, thereby preventing the universal plate from rotating circumferentially and thus preventing the workpiece from rotating, and preventing cutting errors.

[0058] 8. The outer conical surface in this invention is set as an arc-shaped conical surface that matches the ball, which makes the ball roll more smoothly so that the universal plate above it can adjust its posture smoothly and drive the workpiece above it to the optimal posture.

[0059] 9. The present invention provides a set screw on the guide sleeve and a plane corresponding to the set screw on the locking pin, thereby increasing the contact surface between the set screw and the locking pin and improving the stability of the locking pin after it is locked.

[0060] 10. The present invention also provides a limiting groove on the outer wall of the lifting ring and a limiting screw that cooperates with the limiting groove on the guide sleeve. The third through hole and the first through hole are respectively set at both ends of the diameter of the guide sleeve. That is, the limiting screw and the locking pin are set at both ends of the diameter of the guide sleeve, which can improve the stability of the final fixation of the lifting ring. Attached Figure Description

[0061] Figure 1 This is a structural schematic diagram of an existing floating support component;

[0062] Icon labels:

[0063] 01-Support, 011-Circular deep groove, 012-Threaded hole, 02-Top pin, 021-First inclined surface, 03-Spring, 04-Screw, 041-Second inclined surface

[0064] Figure 2This is a schematic diagram of an embodiment of the floating support device of the present invention;

[0065] Figure 3 This is a top view of an embodiment of the floating support device of the present invention;

[0066] Figure 4 This invention is Figure 3 Sectional view of the floating support device AA surface in the middle;

[0067] Figure 5 This is the present invention. Figure 4 Enlarged view of point C in the middle;

[0068] Figure 6 This is the present invention. Figure 3 BB section view of the floating support device in the middle.

[0069] Icon labels:

[0070] 1-Support base;

[0071] 2-Lifting ring, 21-Third inclined surface, 22-Inner conical surface, 23-Ball, 24-Limiting groove;

[0072] 3-Universal plate, 31-Outer conical surface, 32-Top pin;

[0073] 4-Guide sleeve, 41-First through hole, 42-Second through hole, 43-Third through hole, 44-Limit screw, 45-Limit piece, 421-Groove;

[0074] 5-Spring assembly, 51-Anti-chip ring, 52-Spring, 53-Spring cover;

[0075] 6-Locking mechanism, 61-Operating component, 611-Operating screw, 612-Transmission screw, 6121-Screw, 6122-Screw head, 6123-Square hole, 613-Threaded support, 614-Protective sleeve, 6141-Annular protrusion, 615-Operating handle, 62-Locking pin, 621-Fourth inclined surface, 622-Flat surface, 63-Set screw;

[0076] 7-Support assembly, 71-Support column, 72-Upper connecting screw, 73-Lower connecting screw. Detailed Implementation

[0077] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0078] Figure 2 This is a schematic diagram of an embodiment of the floating support device of the present invention, as shown below. Figure 2 As shown, the floating support device includes a support base 1, a lifting ring 2 and a universal plate 3 arranged in parallel from bottom to top, a guide sleeve 4 fitted on the outside of the lifting ring 2, M spring assemblies 5 arranged between the lifting ring 2 and the support base 1, and a locking mechanism 6 arranged on one side of the guide sleeve 4. In this embodiment, M=6.

[0079] The support base is equipped with multiple weight-reducing holes to facilitate the movement or transport of the floating support device.

[0080] Figure 3 This is a top view of an embodiment of the floating support device of the present invention. Figure 4 This invention is Figure 3 The AA-section view of the floating support device in the middle, combined with Figure 3 and Figure 4 As shown, the guide sleeve 4 is fixedly connected to the support base 1 by six support components 7. Specifically, the support component 7 includes a support column 71, an upper connecting screw 72, and a lower connecting screw 73. The upper and lower ends of the support column 71 are fixedly connected to the guide sleeve 4 and the support base 1 by the upper connecting screw 72 and the lower connecting screw 73, respectively. The guide sleeve 4 has a first through hole 41 and a third through hole 43 on its side wall. The first through hole 41 and the third through hole 43 are located at the two ends of the diameter of the guide sleeve 4, respectively. The top or bottom of the guide sleeve 4 has a second through hole 42 that communicates with the first through hole 41.

[0081] Six spring assemblies 5 are evenly distributed around the circumference of the lifting ring 2 to provide cushioning force to the lifting ring 2; each of the six spring assemblies 5 corresponds one-to-one with a support assembly 7. Specifically, each spring assembly 5 includes a chip-proof ring 51, a spring 52, and a spring cover 53 with their axes aligned on the same straight line; the bottom of the chip-proof ring 51 is fixedly connected to the support base 1; the bottom end of the spring 52 is installed inside the chip-proof ring 51, and its top end extends out of the chip-proof ring 51; the spring cover 53 covers the spring 52, with its top end contacting the bottom of the lifting ring 2 and its bottom end fitted inside the chip-proof ring 51; a buffer space is provided between the spring cover 53 and the support base 1. The chip-proof ring 51, spring 52, and spring cover 53 are all fitted onto their corresponding support columns 71. The function of the support column 71 is to connect the guide sleeve 4 and the support base 1 to form an overall frame. The spring assemblies 5 are fitted outside the support column 71, and the inner semicircle of the spring cover 53 just supports the lifting ring 2. This design maximizes the hollow frame, resulting in a clever structure, light weight, and good manufacturability.

[0082] A gap is provided between the lifting ring 2 and the guide sleeve 4, allowing the lifting ring 2 to move up and down. The outer wall of the lifting ring 2 has a third inclined surface 21 corresponding to the first through hole 41 and inclined at its lower end towards its axis. The top of the lifting ring 2 is configured as an inner conical surface 22 with the larger end facing upwards. Multiple balls 23, which can be steel balls, are evenly embedded around the inner conical surface 22. The bottom of the universal plate 3 is configured as an outer conical surface 31 with the larger end facing upwards, and the outer conical surface 31 contacts the balls 23. The outer conical surface 31 is configured as an arc-shaped conical surface that matches the balls 23. The steel balls embedded in the top surface of the lifting ring 2 and their contact with the arc-shaped conical surface reduce the frictional resistance between the lifting ring 2 and the universal plate 3, facilitating the rapid stabilization of the universal plate 3's posture. N top pins 32 are evenly distributed around the top of the universal plate 3; in this embodiment, N=3, and three top pins 32 are used to support the workpiece.

[0083] Figure 6 This is the present invention. Figure 3 The BB section view of the floating support device in the middle, combined with Figure 3 and Figure 6 As shown, a limiting groove 24 is also provided on the outer wall of the lifting ring 2, and the length direction of the limiting groove 24 is parallel to the axis of the lifting ring 2; a limiting screw 44 is provided in the third through hole 43 on the side wall of the guide sleeve 4, and the end of the limiting screw 44 near the lifting ring 2 extends into the limiting groove 24 on the outer wall of the lifting ring 2. It can be understood that the limiting screw 44 and the locking mechanism 6 are located at both ends of the diameter of the lifting ring. In this way, the limiting screw 44 and the locking mechanism 6 work together to limit and lock the lifting ring, which can improve the stability of the lifting ring.

[0084] The top of the guide sleeve 4 has three S-shaped limiting pieces 45; each of the three limiting pieces 45 corresponds to one of the three top pins 32; one end of each limiting piece 45 is fixedly connected to the guide sleeve 4, and the other end is located above the universal plate 3, used to limit the lifting range of the universal plate 3. In addition, the other end of the limiting piece 45 has a groove 421; the groove 421 is engaged with the outer circumferential surface of the corresponding top pin 32. The limiting pieces 45 prevent the universal plate 3 from coming off and the structure from falling apart, and also prevent the universal plate 3 from rotating too much in the circumferential direction.

[0085] The locking mechanism 6 includes an operating component 61, a locking pin 62, and a set screw 63. One end of the operating component 61 is fixedly connected to one end of the locking pin 62, and the other end is the operating end. The other end of the locking pin 62 is provided with a fourth inclined surface 621. The locking pin 62 is disposed in the first through hole 41, and the fourth inclined surface 621 abuts against the third inclined surface 21, so that the locking pin 62 can provide an upward support force for the lifting ring 2 during the locking process, thereby allowing the universal plate above it to better support the workpiece. The side wall of the locking pin 62 is provided with a plane 622 corresponding to the second through hole 42. The set screw 63 is disposed in the second through hole 42 and contacts the plane 622. After the locking pin 62 locks the lifting ring 2, the set screw 63 secures the locking pin 62 in the first through hole 41 to prevent it from coming out. The plane 622 can increase the stability of the locking.

[0086] Specifically, Figure 5 This is the present invention. Figure 4 Enlarged view at point C, combined with Figure 4 and Figure 5 As shown, the operating assembly 61 includes an operating screw 611, a transmission screw 612, a threaded support 613, and a protective sleeve 614. One end of the operating screw 611 is detachably connected to one end of the transmission screw 612, and the other end is provided with an operating handle 615, i.e., the operating end. The other end of the transmission screw 612 contacts the end face of the locking pin 62 away from the guide sleeve 4. The threaded support 613 is fitted over the transmission screw 612 and the locking pin 62. The protective sleeve 614 is fitted over the threaded support 613, the transmission screw 612, and the operating screw 611 to prevent the threaded support 613, the transmission screw 612, and the operating screw 611 from bending. The threaded support 613 is independently designed, and the end of the operating screw 611 is connected to the transmission screw. The transmission mechanism is designed because the threaded parts are frequently used, resulting in low replacement costs after wear and tear. The transmission screw 612 includes a screw rod 6121 and a screw head 6122 with their axes aligned on the same straight line. One end of the screw rod 6121 contacts the locking pin 62, and the other end connects to one end of the screw head 6122. The radius of the screw head 6122 is larger than the radius of the screw rod 6121, forming an annular stepped surface between them. The inner wall of the protective sleeve 614 has an annular protrusion 6141 circumferentially arranged on it, which contacts the annular stepped surface. A square hole 6123 is located at the center of the other end of the screw head 6122. A square post 6111 that mates with the square hole 6123 is located at the center of one end of the operating screw 611. This design lengthens and reinforces the entire operating assembly 61, facilitating operation from outside the workpiece. Loading and unloading workpieces only requires one operation each time, improving work efficiency and reducing labor intensity.

[0087] The floating support device provided by this invention operates as follows: When the universal plate 3 is unloaded, under the action of spring force, the universal plate 3 is at the highest limit position of the limiting piece 45, and the top pin 32 rises to its highest position. Due to the height error of the three limiting pieces 45, the apexes of the three top pins 32 may not be at the same height; when the workpiece is loaded, the workpiece contacts the top pins 32, but due to the error in the height of the workpiece surface, the workpiece may not be able to contact the three top pins 32 simultaneously. At this time, the force generated by the weight of the workpiece is transmitted downward to the universal plate 3. While pressing down on the lifting ring 2, the universal plate 3 also adjusts its posture to tend towards stability, so that all three top pins 32 eventually contact the surface of the workpiece, achieving a balanced state under the bidirectional action of the workpiece's gravity and the spring force. At this time, rotating the operating handle 615 acts on the locking pin 62 through a series of threaded transmissions. The fourth inclined surface 621 on the locking pin 62 fits against the third inclined surface 21 on the lifting ring 2, locking the lifting ring 2 onto the guide sleeve 4. In real-time operation, various design parameters can be calculated based on preset support conditions such as the total support height, the support force required for operation, and the weight of all moving parts, ultimately determining the selection of spring 52. The floating device provided by this invention can serve as a standardized, serialized module applicable to products of different sizes (not limited to circular). Only the dimensions of the universal joint need to be changed. It has significant potential for widespread adoption.

[0088] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A floating support device, characterized in that: It includes a support base (1), a lifting ring (2) and a universal plate (3) arranged in parallel from bottom to top, a guide sleeve (4) fitted on the outside of the lifting ring (2), M spring assemblies (5) set between the lifting ring (2) and the support base (1), and a locking mechanism (6) set on one side of the guide sleeve (4), M≥3; The guide sleeve (4) is fixedly connected to the support base (1), and a first through hole (41) is provided on its side wall. M spring assemblies (5) are evenly distributed around the lifting ring in the circumference to provide a buffering force to the lifting ring (2); A gap is provided between the lifting ring (2) and the guide sleeve (4). The outer wall of the lifting ring (2) is provided with a third inclined surface (21) corresponding to the first through hole (41) and inclined at the lower end toward its axis. The top of the lifting ring (2) is set as an inner conical surface (22) with the large end facing upward. Multiple balls (23) are evenly embedded around the inner conical surface (22). The bottom of the universal plate (3) is configured as an outer conical surface (31) with the large end facing upward, and the outer conical surface (31) contacts the ball (23); N top pins (32) are evenly distributed around the top of the universal plate (3), N≥3; the N top pins (32) are used to support the workpiece; The locking mechanism (6) includes an operating component (61) and a locking pin (62); one end of the operating component (61) is fixedly connected to one end of the locking pin (62), and the other end is the operating end; the other end of the locking pin (62) is provided with a fourth inclined surface (621); the locking pin (62) is disposed in the first through hole (41), and the fourth inclined surface (621) abuts against the third inclined surface (21); The spring assembly (5) includes a chip-proof ring (51) with its axes on the same straight line, a spring (52) and a spring cover (53); The bottom of the anti-chip ring (51) is fixedly connected to the support base (1); The bottom end of the spring (52) is installed inside the anti-chip ring (51), and the top end extends out of the anti-chip ring (51). The spring cover (53) covers the spring (52), its top is in contact with the bottom of the lifting ring (2), and its bottom is fitted inside the anti-chip ring (51); a buffer space is provided between the spring cover (53) and the support base (1); The guide sleeve (4) is fixedly connected to the support base (1) by M support components (7); Each of the M support components (7) corresponds to one of the M spring components (5); The support assembly (7) includes a support column (71), an upper connecting screw (72) and a lower connecting screw (73); the upper and lower ends of the support column (71) are fixedly connected to the guide sleeve (4) and the support base (1) respectively by the upper connecting screw (72) and the lower connecting screw (73); The anti-chip ring (51), spring (52) and spring cover (53) are all fitted onto the corresponding support column (71).

2. The floating support device according to claim 1, characterized in that: The top of the guide sleeve (4) is provided with an S-shaped limiting piece (45); One end of the limiting piece (45) is fixedly connected to the guide sleeve (4), and the other end is located above the universal plate (3) to limit the lifting range of the universal plate (3).

3. The floating support device according to claim 2, characterized in that: There are N limiting pieces (45), and each of them corresponds to one of the N top pins (32); The other end of the limiting piece (45) is provided with a groove (421); the groove (421) is engaged outside the circumferential surface of the corresponding top pin (32).

4. The floating support device according to claim 3, characterized in that: The outer conical surface (31) is configured as an arc-shaped conical surface that matches the ball (23).

5. The floating support device according to claim 4, characterized in that: The locking mechanism (6) also includes a set screw (63); The top or bottom of the guide sleeve (4) is provided with a second through hole (42) that communicates with the first through hole (41). The locking pin (62) has a plane (622) on its side wall that corresponds to the second through hole (42). The set screw (63) is disposed in the second through hole (42) and contacts the plane (622).

6. The floating support device according to claim 5, characterized in that: The operating assembly (61) includes an operating screw (611), a transmission screw (612), a threaded support (613), and a protective sleeve (614). One end of the operating screw (611) is detachably connected to one end of the transmission screw (612), and the other end is the operating end; The other end of the transmission screw (612) contacts the end face of the locking pin (62) away from the guide sleeve (4); The threaded support (613) is fitted onto the other end of the transmission screw (612) and the locking pin (62); The protective sleeve (614) is fitted over the threaded support (613), one end of the transmission screw (612) and the operating screw (611).

7. The floating support device according to claim 6, characterized in that: The transmission screw (612) includes a screw rod (6121) and a screw head (6122) whose axes are on the same straight line. One end of the screw (6121) is in contact with the locking pin (62), and the other end is connected to one end of the screw head (6122); the radius of the screw head (6122) is larger than the radius of the screw (6121), so that an annular step surface is formed between the screw head (6122) and the screw (6121); The inner wall of the protective sleeve (614) is provided with an annular protrusion (6141) around its circumference; the annular protrusion (6141) is in contact with the annular stepped surface; The other end of the screw head (6122) has a square hole (6123) at its center; The operating screw (611) has a square post (6111) at the center of one end that matches the square hole (6123).

8. The floating support device according to claim 7, characterized in that: The outer wall of the lifting ring (2) is also provided with a limiting groove (24), the length direction of the limiting groove (24) is parallel to the axis of the lifting ring (2); The guide sleeve (4) is also provided with a third through hole (43) corresponding to the limiting groove (24) on its side wall. A limiting screw (44) is provided in the third through hole (43), and one end of the limiting screw (44) near the lifting ring (2) extends into the limiting groove (24); The third through hole (43) and the first through hole (41) are located at the two ends of the diameter of the guide sleeve (4), respectively.

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