Anti-lifting nut and supporting device with same

Abstract

The utility model provides an anti-lifting nut and a supporting device with the anti-lifting nut. The anti-lifting nut comprises a supporting top plate which is a metal plate body, and the center of the supporting top plate is provided with a screw hole for a rod body to penetrate through; the circular tube part is welded and combined to the bottom of the supporting top plate, the outer periphery of the circular tube part is located on the inner side of the outer periphery of the supporting top plate, and the inner diameter of the circular tube part is larger than the outer diameter of the screw hole and the outer diameter of the rod body; and the groove is formed on the outer peripheral surface of the circular tube part in a surrounding manner. Through the implementation of the anti-lifting nut, the weight of the anti-lifting nut and the whole weight of the supporting device with the anti-lifting nut can be reduced through the hollow-pipe-shaped round pipe part, and the technology of the anti-lifting nut is simplified and the manufacturing cost of the anti-lifting nut is reduced in the mode that the hollow-pipe-shaped round pipe part is welded and combined to the plate-shaped supporting top plate.

Description

TECHNICAL FIELD

[0001] The utility model relates to a lifting nut and support device with the same, in particular to a lifting nut and support device with the same for supporting raised floors. BACKGROUND

[0002] In the current anti-static computer room or various dust-free rooms of the technology industry, the raised floor system has become a standard equipment for constructing these controlled spaces. In order to support the increasing or larger and concentrated equipment in these spaces, the existing raised floors are mostly made of aluminum alloy material through the processes of mold opening, aluminum melting, die casting, molding and edge trimming.

[0003] However, when the raised floor system is erected, the ground surface of the laid raised floor system will also be uneven due to the limited flatness of the underlying building ground. Therefore, an adjusting mechanism must be provided in the support device of the raised floor system. In addition, the continuous large-scale and / or centralized equipment means that the unit area load of the raised floor is also increasing. In order to be able to support these increasing loads, the raised floor and the support device must also be thickened or enlarged, thereby increasing the load of the building floor. Therefore, both the raised floor and the support device must increase their load capacity while also trying to reduce their own weight.

[0004] Therefore, how to overcome the problems of the prior art has become a pressing issue to be solved. SUMMARY

[0005] In view of the various defects of the prior art, the utility model provides a lifting nut for a rod, which comprises: a support top plate, which is a metal plate body and has a threaded hole in the center for the rod to pass through; a circular tube part welded to the bottom of the support top plate, the outer periphery of the support top plate protruding outward from the upper end of the circular tube part, and the inner diameter of the circular tube part being greater than the outer diameter of the threaded hole and the rod, so that the circular tube part is a hollow tubular body with a hollow hole; and a groove formed around the outer peripheral surface of the circular tube part.

[0006] In the aforementioned lifting nut, a plurality of welding beads or welding points are formed between the circular tube part and the support top plate, and the plurality of welding beads or welding points are evenly distributed at the intersection of the inner peripheral wall of the circular tube part and the support top plate.

[0007] In the aforementioned lifting nut, the support top plate comprises a polygonal rotating part, and the width of the support top plate is greater than the outer diameter of the circular tube part.

[0008] In the aforementioned lifting nut, the rod has a threaded part, and the inner wall surface of the threaded hole has threads that match the threaded part of the rod to allow the rod and the lifting nut to be relatively rotatably connected.

[0009] In the foregoing anti-lift nut, the diameter of the screw hole is 19.05 mm to 25.4 mm.

[0010] In the foregoing anti-lift nut, the height from the top surface of the support top plate to the bottom end of the circular tube portion is 33 mm or less.

[0011] In the foregoing anti-lift nut, the thickness of the support top plate is 5 mm or more.

[0012] In the foregoing anti-lift nut, the height of the circular tube portion is 26 mm or less.

[0013] In the foregoing anti-lift nut, the width of the groove is 6 mm or more.

[0014] The utility model also provides a support device for supporting raised floors, which comprises a base, a pipe column fixed to the base, a rod body located on the axis of the pipe column and having a threaded portion, a support seat provided at the top end of the rod body for erecting a plurality of frame members, and a fixing gasket provided on the support seat for erecting a raised floor thereon, and a lifting assembly provided at the top end of the pipe column and comprising an anti-lift nut, at least one limiting screw, and a rotating member.

[0015] In the foregoing support device, when the rotating member is not in close contact with the anti-lift nut, the anti-lift nut is rotated relative to the rod body to make the rod body produce linear upward or downward movement, thereby adjusting the length of the rod body exposed outside the pipe column and the height of the support seat. When the rotating member and the anti-lift nut are locked together, the rod body is fixed by the rotating member and the anti-lift nut.

[0016] The limiting screw exposed to one end of the pipe column has a driving part, the limiting screw is rotated and extended into and abuts against the groove of the lifting nut by rotating the driving part to fix the lifting nut, thereby stopping and fastening the rod body, and the limiting screw is provided with at least a first fixing nut and a second fixing nut, the first fixing nut is fixed on the surface of the pipe column, and the limiting screw is fixed by the first fixing nut and the second fixing nut by rotating the second fixing nut to abut against the first fixing nut.

[0017] The support top plate is a metal plate body, and is provided with a threaded hole for the rod body to pass through; the circular pipe part is welded to the bottom of the support top plate, the outer periphery of the support top plate is protruded outside the upper end of the circular pipe part, and the inner diameter of the circular pipe part is greater than the outer diameter of the threaded hole and the rod body, so that the circular pipe part is a hollow tubular body with a hollow hole; and the groove is formed around the outer peripheral surface of the circular pipe part.

[0018] As can be seen, the support device of the utility model mainly reduces the weight and material consumption of the lifting nut and the support device as a whole by the hollow tubular circular pipe part, and simplifies the process of the lifting nut and reduces the manufacturing cost by the way of welding the hollow tubular circular pipe part to the plate-shaped support top plate. BRIEF DESCRIPTION OF DRAWINGS

[0019] FIG. 1A It is a sectional view schematic diagram of the support device embodiment of the utility model.

[0020] FIG. 1B It is a three-dimensional exploded schematic diagram of the support device embodiment of the utility model.

[0021] FIG. 2 It is a three-dimensional schematic diagram of the high floor system embodiment applying the support device of the utility model.

[0022] FIG. 2-1 It is FIG. 2 It is a local enlarged view of the middle frame.

[0023] FIG. 3A-1 And FIG. 3A-2 It is a three-dimensional schematic diagram of the lifting nut embodiment of the utility model from different angles.

[0024] FIG. 3A-3 It is a three-dimensional schematic diagram of the variation embodiment of the lifting nut of the utility model.

[0025] FIG. 3B It is a bottom view schematic diagram of the lifting nut embodiment of the utility model.

[0026] FIG. 3CIt is the cross section schematic view of the anti-lifting nut embodiment of the utility model.

[0027] The signs are as follows:

[0028] 1 support device

[0029] 1a lifting assembly

[0030] 10 pipe column

[0031] 11 base

[0032] 110 perforation

[0033] 12 rod body

[0034] 12a screw thread part

[0035] 13 fixed gasket

[0036] 131 limiting bump

[0037] 14 support seat

[0038] 14s frame support part

[0039] 141 first fixed hole

[0040] 142 third fixed hole

[0041] 15 anti-lifting nut

[0042] 151 support top plate

[0043] 151a rotating part

[0044] 1510 screw hole

[0045] 151p screw thread

[0046] 152 round pipe part

[0047] 153 recess

[0048] 154 weld bead

[0049] 155 hollow hole

[0050] 16 limiting screw

[0051] 160 driving part

[0052] 161 first fixed nut

[0053] 162 second fixed nut

[0054] 17 rotating part

[0055] 2 frame

[0056] 20 second fixed hole

[0057] 21,41 screw

[0058] 3 raised floor system

[0059] 4 raised floor

[0060] 40 fixing hole

[0061] D diameter

[0062] d thickness

[0063] F ground

[0064] H1, H2 height

[0065] w width

[0066] X, Y, Z arrow direction DETAILED DESCRIPTION

[0067] The implementation of the present application will be described by specific embodiments, and other advantages and effects of the present application can be easily understood by those skilled in the art from the disclosure of the present application.

[0068] It should be understood that the structures, proportions, sizes, etc. shown in the accompanying drawings of the present application are only used to cooperate with the disclosed content of the present application for the understanding and reading of those skilled in the art, and are not used to limit the implementation conditions of the present application, and therefore do not have technical substantive significance. Any modification of the structure, change of the proportional relationship, or adjustment of the size, without affecting the effects and purposes that can be achieved by the present application, should still fall within the scope of the disclosed technical content of the present application. At the same time, the terms such as "upper", "lower", "left", "right", "front", "rear", "first", "second", and "one" in the present application are only for the convenience of clear description, and are not used to limit the implementation range of the present application. The change or adjustment of the relative relationship, without substantially changing the technical content, is also considered as the implementation scope of the present application.

[0069] FIG. 1A and FIG. 1B are related schematic diagrams of an embodiment of the support device of the present application; FIG. 2 and FIG. 2-1 are related schematic diagrams of an embodiment of a raised floor system applying the support device of the present application; FIG. 3A-1 , FIG. 3A-2 , FIG. 3B and FIG. 3C are related schematic diagrams of an embodiment of the anti-lifting nut of the present application. In the present embodiment, the support device 1 defines the direction of the frame as the left-right direction (such as the arrow direction X in FIG. 1B and FIG. 2 the arrow direction X) and the front-rear direction (such as the arrow direction Y inFIG. 1B and FIG. 2 The arrow direction is Y), while the direction along the height of the support device 1 is defined as the up and down directions (e.g., the arrow direction is Y). FIG. 1B and FIG. 2 (The arrow in the diagram points to the direction Z). It should be understood that this orientation is used to illustrate the configuration of this embodiment and is not particularly limiting.

[0070] like FIG. 1A and FIG. 1B As shown, the support device 1 provided in this embodiment includes: a base 11, a column 10, a rod 12, a support seat 14, and a lifting assembly 1a.

[0071] The base 11 is a rectangular plate that is fixed to the ground by means of a plurality of through holes 110 through which fasteners such as bolts or expansion screws (not shown) are inserted. For example, the plurality of through holes 110 are arranged at the four corners of the base 11.

[0072] The column 10 is a hollow cylindrical metal column, with its bottom end fixed to the center of the base 11, and the rod 12 inserted into the top of the column 10.

[0073] The rod 12 is located on the axis of the column 10, with one end inserted into the column 10 and the other end extending from the top of the column 10. The outer peripheral surface of the rod 12 includes a threaded portion 12a. The threaded portion 12a may only cover a partial area along the length of the outer peripheral surface of the rod 12, but in this embodiment, the threaded portion 12a extends to cover the entire outer peripheral surface of the rod 12, that is, the rod 12 is a threaded rod.

[0074] The support base 14 is a cross-shaped metal plate with an approximately square outer perimeter, and is disposed and joined to the top of the rod 12. For example, the bottom of the support base 14 can be fixed to the top of the rod 12 by welding. Alternatively, a snap-fit ​​structure (not shown) can be provided or formed between the bottom of the support base 14 and the top of the rod 12 to allow the support base 14 to snap or fasten onto the rod 12. Alternatively, the support base 14 can be screwed onto the rod 12. This embodiment does not have any particular limitations in this regard.

[0075] Please also refer to FIG. 2 and FIG. 2-1The four edges of the support base 14 are respectively formed with a frame support portion 14s for supporting a plurality of frames 2. At least one first fixing hole 141 is formed on each frame support portion 14s. The end of each frame 2 is correspondingly formed with a second fixing hole 20. The frame 2 can be locked on the frame support portion 14s of the support base 14 by means of a screw 21 passing through the second fixing hole 20 and the corresponding first fixing hole 141. At least one third fixing hole 142 is further formed on each frame support portion 14s. A screw 41 passes through the fixing hole 40 of the elevated floor 4 and the third fixing hole 142 to fix the four legs of the elevated floor 4 on the support base 14.

[0076] In addition, the support base 14 is provided with a fixing pad 13 for supporting the elevated floor 4. Four limiting protrusions 131 are formed on the top surface of the fixing pad 13 adjacent to the edges. When one corner of the elevated floor 4 is placed on the fixing pad 13 on the top of the support base 14, the bottom of the corner of the elevated floor 4 is blocked by the limiting protrusions 131 to be correctly positioned, thereby facilitating the laying of the elevated floor 4.

[0077] The lifting assembly 1a is arranged at the top end of the pipe column 10 and includes a lifting nut 15, at least one limiting screw 16, a first fixing nut 161, a second fixing nut 162, and a rotating member 17.

[0078] The lifting nut 15 is arranged for the rod 12 to pass through. As shown in FIG. 3A-1 to FIG. 3C The lifting nut 15 includes a support top plate 151, a cylindrical portion 152, and a groove 153. The support top plate 151 is a metal plate body, and a screw hole 1510 is formed in the center thereof for the rod 12 to pass through. The cylindrical portion 152 is welded to the bottom of the support top plate 151. The inner diameter of the cylindrical portion 152 is greater than the inner diameter of the screw hole 1510 and the outer diameter of the rod 12 to form a hollow hole 155. That is, the cylindrical portion 152 is a hollow tubular body to reduce the weight and material cost of the lifting nut 15, and the rod 12 does not contact the inner wall of the cylindrical portion 152 when the rod 12 passes through the lifting nut 15. In addition, the outer periphery of the cylindrical portion 152 is located at the lower end of the support top plate 151, and the outer diameter of the cylindrical portion 152 is smaller than the inner diameter of the pipe column 10 so that the cylindrical portion 152 is accommodated in the pipe column 10. The outer diameter of the cylindrical portion 152 is smaller than the width of the support top plate 151. The outer periphery of the support top plate 151 protrudes outwardly from the upper end of the cylindrical portion 152 and protrudes outwardly from the outer wall of the pipe column 10, so that the support top plate 151 is slidably supported on the top end of the pipe column 10 by the bottom surface thereof. The groove 153 is formed around the outer periphery of the cylindrical portion 152.

[0079] The support top plate 151 is combined with the circular tube portion 152 via welding. Since the plate and tube parts are quite easy to produce without the need for special or expensive equipment, and welding is a very basic technique in the relevant industry, the process of making the lifting nut 15 in this way can effectively simplify the process and reduce the production cost. Preferably, the weld between the support top plate 151 and the circular tube portion 152 is a weld around the top end of the inner surface of the circular tube portion 152 and the support top plate 151. The support top plate 151 can be a hexagon with opposite sides symmetrically opposite each other, or a quadrilateral with opposite sides symmetrically opposite each other, and a tool can be used to apply force to the opposite sides of the hexagon or quadrilateral to rotate the support top plate 151. As shown in FIG. 3A-2 and FIG. 3B in some variant embodiments, welding can also be performed by spot welding, and a plurality of weld points or welds 154 are formed between the circular tube portion 152 and the support top plate 151 to further reduce the weight of the lifting nut 15. The plurality of weld points or welds 154 are evenly distributed at the intersection between the inner peripheral wall of the circular tube portion 152 and the support top plate 151, so as to evenly bear the stress when in operation.

[0080] In addition, the support top plate 151 also includes a rotating portion 151a. As shown in FIG. 3A-3 in some variant embodiments, the rotating portion 151a can only cover the upper half of the support top plate 151 and its diameter or diagonal length can be slightly smaller than the outer diameter of the top end of the pipe column 10, and the lower half of the support top plate 151 abutting the outer peripheral edge of the top end of the pipe column 10 is still protruding from the outer wall of the pipe column 10, so as to slightly reduce the overall weight of the lifting nut 15. The rotating portion 151a can be a polygon, such as the hexagon shown in the embodiment, so as to accept the force of a tool such as a wrench (not shown) to drive the overall rotation of the lifting nut 15. In some variant embodiments, the rotating portion 151a can also be a quadrilateral or star-shaped, plum blossom-shaped, etc., and the embodiment does not have any particular limitation on this.

[0081] In addition, as mentioned above, the rod body 12 has a threaded portion 12a. The inner wall surface of the threaded hole 1510 of the lifting nut 15 in which the rod body 12 is provided can be smooth, or can be formed with threads 151p that match the threaded portion 12a of the rod body 12 to allow the rod body 12 and the lifting nut 15 to be relatively rotatable.

[0082] In some embodiments, the diameter D of the screw hole 1510 is 19.05 mm to 25.4 mm for a rod 12 with a diameter of 19.05 mm (3 / 4 inch) to 25.4 mm (1 inch) to pass through. The height H1 of the support top plate 151 from the top surface of the support top plate 151 to the bottom end of the cylindrical portion 152 is 33 mm or less. In addition, in order to enable the lifting nut 15 to provide sufficient load, the thickness d of the support top plate 151 is 5 mm or more. In order to reduce the weight while providing sufficient mechanical strength, the height H2 of the cylindrical portion 152 can be reduced to 28 mm or less.

[0083] The rotating member 17 can also be a nut, such as the hexagonal nut shown in the present embodiment, which is rotatably screwed onto the threaded portion 12a of the rod 12 between the lifting nut 15 and the support base 14.

[0084] In the present embodiment, the inner wall surface of the screw hole 1510 of the lifting nut 15 is formed with threads 151p that match the threads of the threaded portion 12a of the rod 12. When the four corners of the elevated floor 4 are fixed to the support bases 14, as in the elevated floor system 3 of FIG. 2 When the elevated floor 4 is fixed to the support bases 14, the lifting nut 15 and the rod 12 are restricted as a whole by the elevated floor 4, i.e., the lifting nut 15 can only rotate in place. Rotating the lifting nut 15 will cause the rod 12 to move linearly up and down, thereby adjusting the levelness of the elevated floor 4, so that the rod 12 moves up or down as a whole relative to the column 10 and the support device 1 (i.e., moves up and down in the direction of the arrow Z in FIG. 1B When the adjustment is complete, the rotating member 17 is rotated to lock with the lifting nut 15, so that the rod 12 is fixed by the rotating member 17 and the lifting nut 15.

[0085] The limiting screw 16 is inserted through the wall of the column 10 and the end of the limiting screw 16 is inserted into and abuts against the groove 153 of the lifting nut 15 to fix the lifting nut 15. Since the length of the rod 12 that protrudes from the column 10 can be adjusted by rotating the rod 12 relative to the lifting nut 15 in the present embodiment, fixing the lifting nut 15 and the rotating member 17 also simultaneously stops and tightens the rod 12. Since the groove 153 of the lifting nut 15 needs to allow the end of the limiting screw 16 to protrude, the width w of the groove 153 is greater than or equal to the diameter of the end of the limiting screw 16, such as 6 mm or more.

[0086] In some embodiments, the lifting assembly 1a comprises at least one limiting screw 16. As shown in FIG. 1A and FIG. 1B , in this embodiment, two limiting screws 16 are symmetrically arranged around the circumference of the pipe column 10, but more, such as three or four, can be used as needed to be evenly distributed around the circumference of the pipe column 10, and this embodiment does not limit this.

[0087] The end of the limiting screw 16 exposed outside the pipe column 10 has a driving part 160. The driving part 160 can be a polygonal block, such as a quadrilateral or hexagonal block, that is, the limiting screw 16 can be a four-cornered or hexagonal screw, or the driving part 160 can also be a block with triangular, quadrangular, hexagonal, star-shaped or torx-shaped recesses, that is, the limiting screw 16 is an internal triangular, quadrangular, hexagonal or star-shaped or torx-shaped screw, and the driving part 160 is rotated by a tool corresponding to its shape to drive the limiting screw to extend into the pipe column 10 and abut against the recess 153 of the lifting nut 15. In this embodiment, two internal hexagonal screws are used as an example of the limiting screw 16.

[0088] In addition, the pipe column 10 can be provided with a first fixed nut 161 corresponding to each limiting screw 16, so that the limiting screw 16 is screwed into the first fixed nut 161 and then passes through the wall of the pipe column 10. In some embodiments, the first fixed nut 161 can be fixed on the surface of the pipe column 10 by welding or other means. In other embodiments, the driving part 160 of each limiting screw 16 is further combined with the first fixed nut 161 by a second fixed nut 162, and the limiting screw 16 is fixed by the first fixed nut 161 and the second fixed nut 162 by rotating the second fixed nut 162 to abut against the first fixed nut 161.

[0089] Thus, when the support device 1 provided by the present embodiment is used to erect the elevated floor system 3 in FIG. 2 , first, a plurality of support devices 1 are arranged on the ground F, and then a plurality of frame members 2 are erected on the support seats 14 of the plurality of support devices 1 to form a network-like support structure. Then, the extension length of the rod body 12 is adjusted by the lifting assembly 1a to adjust the height of each support seat 14. Then, a plurality of rectangular elevated floors 4 can be arranged on the network-like support structure, and screws 41 are locked into the fixed holes 40 at each corner of each elevated floor 4 to fix the four corners of each elevated floor 4 on one support device 1 (i.e., one support device 1 has four corners of four elevated floors 4 erected thereon) to form an elevated floor system 3. FIG. 2-1

[0090] ​The embodiment also provides a lifting nut 15 for a rod 12, the lifting nut 15 comprising: a support top plate 151, which is a metal plate body and has a screw hole 1510 in the center thereof for the rod 12 to pass through; a round tube portion 152, which is welded to the lower end of the support top plate 151 and has an inner diameter greater than the outer diameter of the screw hole 1510 and the rod 12; and a groove 153, which is formed around the outer circumferential surface of the round tube portion 152.

[0091] In some variant embodiments, a plurality of welding beads 154 or welding points are formed between the round tube portion 152 and the support top plate 151, and the plurality of welding beads 154 or welding points are evenly distributed at the intersection between the inner circumferential wall of the round tube portion 152 and the support top plate 151.

[0092] As shown in FIG. 3A-3 In some variant embodiments, the support top plate 151 comprises a rotating portion 151a, which can be a hexagon with opposite sides symmetric to each other or a quadrangle with opposite sides symmetric to each other. A tool can be used to apply force to the opposite sides of the hexagon or quadrangle to rotate the rotating portion 151a. The opposite side width of the rotating portion 151a is greater than FIG. 3A-1 the opposite side width of the rotating portion 151a.

[0093] In some variant embodiments, the rotating portion 151a is a polygon.

[0094] In some variant embodiments, the rod 12 has a threaded portion 12a, and the inner wall surface of the screw hole 1510 has threads 151p that match the threaded portion 12a of the rod 12 so that the rod 12 and the lifting nut 15 can be relatively rotatably combined. When the four corners of the raised floor 4 are fixed to the support seats 14, as in the raised floor system 3 in FIG. 2 some variant embodiments, a plurality of support devices 1 are arranged on the ground F, and a plurality of frame members 2 are arranged on the support seats 14 of the plurality of support devices 1 to form a net-like support structure. At this time, the lifting nut 15 and the rod 12 are integrated by the raised floor 4, that is, the lifting nut 15 can only rotate in place. When the lifting nut 15 is rotated, the rod 12 can be linearly displaced up and down to adjust the levelness of the raised floor 4.

[0095] In some variant embodiments, the width w of the groove 153 is greater than or equal to 6 mm.

[0096] In summary, the support device of the present application reduces the weight and material usage of the lifting nut and the support device by using the hollow tubular round tube portion, and simplifies the process of the lifting nut and reduces the manufacturing cost by welding the hollow tubular round tube portion to the plate-shaped support top plate.

[0097] The above examples are only used to illustrate the principles and effects of the present application, and are not used to limit the present application. Those skilled in the art can modify the above examples without departing from the spirit and scope of the present application. Therefore, the protection scope of the present application should be as listed in the claims.

Claims

1. A lifting nut for inserting a rod, characterized in that, The lifting nut includes: A supporting top plate is a metal plate with a screw hole for the rod to pass through. A circular tube section is welded to the bottom of the supporting top plate. The outer periphery of the supporting top plate protrudes from the upper outer side of the circular tube section. The inner diameter of the circular tube section is larger than the outer diameter of the screw hole and the rod body, making the circular tube section a hollow tubular body with a hollow hole. A groove is formed around the outer circumference of the circular tube.

2. The anti-lift nut as described in claim 1, characterized in that, Multiple weld beads or weld points are formed between the circular tube section and the supporting top plate, and these multiple weld beads or weld points are evenly distributed at the junction of the inner circumferential wall of the circular tube section and the supporting top plate.

3. The anti-lift nut as described in claim 1, wherein, The supporting top plate includes a polygonal rotating part, and the width of the supporting top plate is greater than the outer diameter of the circular tube part.

4. The anti-lift nut as described in claim 1, characterized in that, The rod has a threaded portion, and the inner wall surface of the threaded hole has a thread that matches the threaded portion of the rod so that the rod and the lifting nut can be rotatably coupled.

5. The anti-lift nut as described in claim 1, characterized in that, The diameter of the screw hole ranges from 19.05 mm to 25.4 mm.

6. The anti-lift nut as described in claim 1, characterized in that, The height from the top surface of the supporting top plate to the bottom of the circular tube is less than 33 mm.

7. The anti-lift nut as described in claim 1, characterized in that, The thickness of the supporting top plate is greater than or equal to 5 millimeters.

8. The anti-lift nut as described in claim 1, characterized in that, The height of the circular tube section is less than 28 millimeters.

9. The anti-lift nut as described in claim 1, characterized in that, The groove is at least 6 millimeters wide.

10. A support device for supporting a raised floor, characterized in that, The support device includes: Base; The tubular column is fixedly mounted on the base; A rod body, located on the axis of the tubular column and having threaded portions, with one end of the rod body inserted into the tubular column and the other end extending out of the tubular column; A support base, with its bottom fixed to the top of the pole for mounting multiple frame components, and a fixing pad provided on the support base for the raised floor to be mounted thereon; and A lifting assembly is disposed at the top of the column, and the lifting assembly includes an anti-lift nut, at least one limiting screw, and a rotating component as described in any one of claims 1 to 9; The lifting nut is for the rod to pass through, and the outer periphery of the supporting top plate of the lifting nut protrudes from the outer wall of the column. The outer diameter of the round tube portion of the lifting nut is smaller than the inner diameter of the column, so that the round tube portion of the lifting nut is accommodated in the column, and the supporting top plate is slidably connected to the top of the column with its bottom surface. At least one limiting screw passes through the wall of the tube column, and one end of the limiting screw extends into and abuts against the groove of the lifting nut after passing through the tube column wall. The rotating component is rotatably coupled to the threaded portion of the rod.

11. The support device as claimed in claim 10, characterized in that, When the rotating component is not engaged with the lifting nut, the lifting nut is rotated relative to the rod to cause the rod to move upward or downward in a straight line, thereby adjusting the length of the rod protruding from the column and the height of the support. When the rotating component and the lifting nut are locked together, the rod is fixed by the rotating component and the lifting nut.

12. The support device as claimed in claim 10, characterized in that, Each limiting screw has a driving part at one end exposed outside the column. By rotating the driving part, the limiting screw is rotated to extend into and abut against the groove of the lifting nut to fix the lifting nut, thereby stopping and tightening the rod. The limiting screw is provided with at least one first fixing nut and one second fixing nut at the insertion point. The first fixing nut is fixed to the surface of the column, and by rotating the second fixing nut, it abuts against the first fixing nut, so that the limiting screw is fixed by the first fixing nut and the second fixing nut together.

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