Steel spring floating slab

Abstract

The utility model discloses a steel spring floating slab, which relates to the technical field of subway tracks and comprises a track bed, a first boss is arranged on the top surface of the track bed, and a vibration isolator outer sleeve is arranged in the track bed. The vibration isolator outer sleeve comprises a sleeve body, extending fins, a pulling and connecting assembly and abutting protrusions. The extending fins are annular and are arranged at the bottom end of the outer side wall of the cylinder body; the abutting protrusion is arranged in the middle of the inner side wall of the cylinder and used for abutting against the vibration isolator. The pulling and connecting assembly comprises a first pulling and connecting rod and a second pulling and connecting rod which are arranged on the side wall of the barrel. The abutting protrusions are used for achieving installation of the vibration isolator, the extending fins and the pulling and connecting assembly act together to improve the pulling and connecting force between the barrel and concrete, and therefore the problem that the pulling and connecting force is insufficient due to vibration defects is solved, the product quality is improved, and driving safety is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of subway track technology, specifically to a steel spring floating plate. Background Technology

[0002] A subway is a high-speed, high-capacity, electrically powered rail transit system built in cities. Compared to freight transport, subways primarily function to carry passengers, therefore, they have higher requirements for user comfort.

[0003] In subway tracks, steel spring floating slabs work in conjunction with vibration isolators to support and dampen subway vehicles, thereby improving the user experience. Steel spring floating slabs typically have built-in vibration isolator sleeves, thus connecting the steel spring floating slabs and the vibration isolators.

[0004] Currently, steel spring floating slabs are typically prefabricated in factories; the manufacturing process involves pouring concrete into a mold cavity. The vibration isolator outer sleeve is pre-installed as an embedded part within the steel mesh of the mold cavity, and after the concrete hardens, it is connected to the outer sleeve to form a unified whole. After the concrete is poured, it needs to be vibrated with a vibrator to improve the uniformity of the concrete and eliminate vibration defects (such as air bubbles). Concrete near the vibration isolator outer sleeve is prone to vibration defects (e.g., reduced fluidity of surrounding concrete due to the vibration isolator outer sleeve, or insufficient gap between the vibration isolator outer sleeve and the reinforcing steel, making it difficult to insert the vibrator), further leading to product defects such as insufficient tensile strength between the vibration isolator outer sleeve and the concrete. Summary of the Invention

[0005] In order to overcome the problem of "insufficient tension between the outer sleeve of the vibration isolator and the concrete" in the above-mentioned background technology, this utility model provides a steel spring floating plate.

[0006] The technical solution adopted by this utility model to solve the above-mentioned technical problems is:

[0007] A steel spring floating slab includes a track bed, the top surface of which is provided with a first boss for supporting the track, and an outer sleeve for installing a vibration isolator inside the track bed; the outer sleeve includes a cylinder, extended fins, a connecting assembly, an abutment protrusion, an inner extended fin, and a cover plate; the extended fins are annular and located at the bottom end of the outer wall of the cylinder; the inner extended fins are located at the top end of the inner wall of the cylinder, and the cover plate is detachably connected to the inner extended fins; the abutment protrusion is located in the middle of the inner wall of the cylinder for abutting the vibration isolator; the connecting assembly includes a first connecting rod and a second connecting rod located on the side wall of the cylinder.

[0008] As a further optimization of this utility model, the abutting protrusion includes an arc-shaped side plate, a first convex rib, a second convex rib, and a third convex rib; the outer wall of the arc-shaped side plate is attached to and fixedly connected to the inner wall of the cylinder; the first convex rib and the second convex rib are both horizontally positioned and located at the top and bottom edges of the inner wall of the arc-shaped side plate, respectively; the third convex rib is vertically positioned and located in the middle of the inner wall of the arc-shaped side plate; the first convex rib, the second convex rib, and the third convex rib are fixedly connected to the arc-shaped side plate.

[0009] The first rib, the second rib, and the third rib are arranged in an I-shape.

[0010] As a further optimization of this utility model, the first connecting rod is in the shape of a straight rod; the first connecting rod is arranged radially along the cylinder body, and the first connecting rod is fixedly connected to the outer wall of the cylinder body.

[0011] As a further optimization of this utility model, the cross-section of the first connecting rod is L-shaped.

[0012] As a further optimization of this utility model, the second connecting rod includes a first rod body and a second rod body fixedly connected in a figure-7 shape; the first rod body is arranged radially along the cylinder body, and the second rod body is arranged axially along the cylinder body; the first rod body is fixedly connected to the outer side wall of the cylinder body, and the second rod body is fixedly connected to the inner side wall of the cylinder body.

[0013] As a further optimization of this utility model, the side wall of the cylinder is provided with an insertion hole, and the first rod is inserted into the insertion hole.

[0014] As a further optimization of this utility model, the cross-section of the second rod is rectangular.

[0015] As a further optimization of this utility model, the second rod includes a first sidewall, a second sidewall, a third sidewall, and a fourth sidewall; the first sidewall and the third sidewall are arranged opposite to each other, and the second sidewall and the fourth sidewall are arranged opposite to each other; the fourth sidewall is pressed against the inner wall of the cylinder, and the upper part of the third sidewall is attached to the sidewall of the arc-shaped side plate; the second sidewall is fixedly connected to the inner wall of the arc-shaped side plate, and the first sidewall is fixedly connected to the inner wall of the cylinder.

[0016] As a further optimization of this utility model, the cover plate and the inner extension fin are detachably connected by bolts.

[0017] As a further optimization of this utility model, the cylinder body is a cylindrical shape with a constant diameter.

[0018] In summary, this utility model has at least one of the following advantages:

[0019] (1) The present invention has a simple structure and reliable function. The outer sleeve of the vibration isolator includes a cylinder, an extension fin, a connecting component, and an abutment protrusion. The abutment protrusion is used to realize the installation of the vibration isolator. The extension fin and the connecting component work together to improve the connection force between the cylinder and the concrete, thereby compensating for the problem of insufficient connection force caused by vibration defects, improving product quality, and ensuring driving safety.

[0020] (2) The connecting assembly includes a first connecting rod and a second connecting rod. The second connecting rod includes a first rod body and a second rod body. The height of the first connecting rod is lower than the height of the first rod body, and the first connecting rod is located diagonally below the first rod body, thereby improving the uniformity of the connecting. The number of first connecting rods is equal to the number of second connecting rods. The first connecting rods are arranged in a circumferential array along the cylinder at equal angles and equal intervals. The first connecting rod is located below the gap between adjacent second connecting rods, thereby improving the uniformity of the connecting.

[0021] (3) The first rod is fixedly connected to the outer side wall of the cylinder, and the second rod is fixedly connected to the inner side wall of the cylinder. The cylinder applies a pulling force to the second rod, which is transmitted to the first rod, thereby preventing the end of the first rod and the second rod from being pulled out of the insertion hole, and further preventing relative movement between the second connecting rod and the cylinder. That is, the track bed, the second connecting rod and the cylinder are fixedly connected to each other, thus improving the structural stability of this utility model.

[0022] (4) During construction, the fixed end of the vibration isolator is fixedly connected to the roadbed, and the movable end of the vibration isolator extends into the inner cavity of the cylinder and inserts the second rod into the receiving groove. This can prevent the movable end and the fixed end of the vibration isolator from rotating relative to each other, thereby avoiding wear on the roadbed / abutment protrusion / movable end / fixed end caused by rotation and reducing the overall support height of this utility model, thus improving the flatness and service life of the subway track. Attached Figure Description

[0023] The present application will be further explained below with reference to the accompanying drawings:

[0024] Figure 1 This is a top view of the overall structure of this utility model;

[0025] Figure 2 This is a front view structural diagram of the present invention.

[0026] Figure 3 This is a schematic diagram of the outer sleeve structure of the vibration isolator;

[0027] Figure 4 This is a schematic diagram of a 1 / 3 vertical section of the outer sleeve of the vibration isolator;

[0028] Figure 5 This is a schematic diagram showing the installation location and structure of the pull-up assembly;

[0029] Figure 6 A schematic diagram showing the layout and structure of the insertion holes;

[0030] Figure 7 This is a schematic diagram showing the installation position and structure of the second tie rod;

[0031] Figure 8 A schematic diagram of the cross-section of the second rod from below;

[0032] Figure 9 A plan view showing the installation position and structure of the embedded part and the embedded groove;

[0033] Figure 10 A frontal view of the welding positions of the first, second, and third welds.

[0034] Explanation of reference numerals in the attached figures:

[0035] In the picture,

[0036] 1. Track bed;

[0037] 2. First boss;

[0038] 3. Vibration isolator outer sleeve; 31. Cylinder body; 311. Insertion hole; 312. First weld; 313. Third weld; 314. Snap-fit ​​protrusion; 32. Extended fin; 33. Pull-up assembly; 331. First pull-up rod; 332. Second pull-up rod; 34. Abutment protrusion; 341. Arc-shaped side plate; 3411. Second weld; 3412. Embedded groove; 342. First rib; 3321. First rod; 3322. Second rod; 33221. First side wall; 33222. Second side wall; 33223. Third side wall; 33224. Fourth side wall; 33225. Embedded part; 343. Second rib; 344. Third rib; 35. Inner extended fin; 36. Cover plate;

[0039] 4. Vibration isolators. Detailed Implementation

[0040] Based on the above-described structural features of this application, the implementation methods of this application will be further described as follows:

[0041] Reference Figures 1-2This embodiment provides a steel spring floating slab, including a track bed 1. The top surface of the track bed 1 has a first boss 2 for supporting the track. Both the track bed 1 and the first boss 2 are reinforced concrete structures and are integrally fixedly connected. The track bed 1 contains a vibration isolator outer sleeve 3 for installing a vibration isolator 4; the vibration isolator outer sleeve 3 is fixed and installed through the track bed 1 by pre-embedding. The top surface of the first boss 2 has pre-embedded bolts or pre-embedded sleeves, which are connected to the bolts pressing the track.

[0042] Reference Figure 2 and Figure 3 The outer sleeve 3 of the vibration isolator is arranged along the thickness direction of the track bed 1, so that the present invention can be placed horizontally and pressed onto the vibration isolator 4.

[0043] Reference Figure 3 The outer sleeve 3 of the vibration isolator includes a cylinder 31, an extended fin 32, a connecting assembly 33, an abutment protrusion 34, an inner extended fin 35, and a cover plate 36.

[0044] Reference Figure 3 The extended fin 32 is annular and located at the bottom of the outer wall of the cylinder 31; the extended fin 32 is fixedly connected to the cylinder 31 (e.g., by integral fixed connection or by welding fixed connection); after the present invention is horizontally installed on the vibration isolator 4, the top surface of the extended fin 32 applies an upward supporting force to the track bed 1, so as to prevent the outer wall of the cylinder 31 from sliding against the track bed 1 and causing the cylinder 31 to fall off.

[0045] Reference Figure 3 The inner fin 35 is disposed at the top end of the inner sidewall of the cylinder 31, and is fixedly connected to the cylinder 31 (e.g., by integral fixing or by welding). The cover plate 36 is detachably connected to the inner fin 35. (See reference...) Figure 4 The cover plate 36 and the inner fin 35 are detachably connected by bolts. The cover plate 36 has screw holes, and the edge of the cover plate 36 has insertion holes adapted to the screw holes. The user presses the cover plate 36 onto the inner fin 35, aligning the screw holes and insertion holes, and then uses bolts to penetrate the insertion holes and tighten them with the screw holes to complete the installation of the cover plate 36. The cover plate 36 is used to seal the top opening of the inner cavity of the cylinder 31, thereby preventing debris, dust, rainwater and other impurities from damaging the vibration isolator 4, increasing the service life of the vibration isolator 4 and improving the functional reliability of this utility model.

[0046] The inner extension fins 35 are provided with at least three; the inner extension fins 35 are arranged in a circumferential array with equal spacing and equal angles along the inner wall of the cylinder 31, thereby stably supporting the cover plate 36.

[0047] Reference Figure 3 and Figure 4The abutment protrusion 34 is located in the middle of the inner wall of the cylinder 31 to abut against the vibration isolator 4; the abutment protrusion 34 is fixedly connected to the vibration isolator 4 (e.g., by bolts, welding, or an integral connection). The abutment protrusion 34 abuts against the upper movable end of the vibration isolator 4; the lower fixed end of the vibration isolator 4 is pressed against the roadbed. The vibration isolator 4 is a steel spring damping vibration isolator 4, which is a conventional existing technology in the industry, and its specific structure will not be described in detail.

[0048] At least three abutting protrusions 34 are provided; the abutting protrusions 34 are arranged in a circumferential array with equal spacing and equal angle along the inner wall of the cylinder 31, thereby stably abutting the vibration isolator 4, avoiding uneven load, improving the running stability of the vehicle, and further improving the comfort of passengers.

[0049] Reference Figure 4 The abutting protrusion 34 includes an arc-shaped side plate 341, a first protruding rib 342, a second protruding rib 343, and a third protruding rib 344. The outer wall of the arc-shaped side plate 341 is attached to and fixedly connected to the inner wall of the cylinder 31 (e.g., by welding, by bolting, or by an integral connection). The first protruding rib 342 and the second protruding rib 343 are both horizontally positioned and located at the top and bottom edges of the inner wall of the arc-shaped side plate 341, respectively. The third protruding rib 344 is vertically positioned and located in the middle of the inner wall of the arc-shaped side plate 341.

[0050] Reference Figure 4 The first protruding rib 342, the second protruding rib 343 and the third protruding rib 344 are respectively fixedly connected to the arc-shaped side plate 341 in one piece, thereby improving the ease of assembly.

[0051] Reference Figure 4 The first rib 342, the second rib 343 and the third rib 344 are arranged in an I-shape. The I-shaped structure has excellent compressive and bending resistance, thereby improving the load-bearing capacity of this utility model.

[0052] Reference Figure 3 and Figure 5 The connecting assembly 33 includes a first connecting rod 331 and a second connecting rod 332 disposed on the side wall of the cylinder 31. The first connecting rod 331 and the second connecting rod 332 are used to increase the connecting force between the outer sleeve of the vibration isolator 3 and the track bed 1, and to prevent the cylinder 31 from slipping off due to the outer wall of the cylinder 31 sliding against the track bed 1.

[0053] Reference Figure 5 The first connecting rod 331 is straight; the first connecting rod 331 is arranged radially along the cylinder 31 and is fixedly connected to the outer wall of the cylinder 31. The end of the first connecting rod 331 is welded and fixed to the outer wall of the cylinder 31. The cross-section of the first connecting rod 331 is L-shaped.

[0054] Reference Figure 5 and Figure 7 The second connecting rod 332 includes a first rod body 3321 and a second rod body 3322 fixedly connected in a figure-7 shape; the first rod body 3321 and the second rod body 3322 are integrally fixedly connected. The first rod body 3321 is arranged radially along the cylinder 31, and the second rod body 3322 is arranged axially along the cylinder 31. When the present invention is installed horizontally, the first rod body 3321 is horizontal and the second rod body 3322 is vertical. The first rod body 3321 is fixedly connected to the outer wall of the cylinder 31, and the second rod body 3322 is fixedly connected to the inner wall of the cylinder 31. The cylinder 31 applies a connecting force to the second rod body 3322, and the connecting force is transmitted to the first rod body 3321, thereby preventing relative movement between the first rod body 3321 and the cylinder 31, that is, realizing the mutual fixed connection between the track bed 1, the second connecting rod 332, and the cylinder 31.

[0055] Reference Figure 6 and Figure 7 The side wall of the cylinder 31 is provided with a plug hole 311, and the end of the first rod 3321 is plugged into the plug hole 311, thereby realizing the connection between the first rod 3321 and the second rod 3322.

[0056] The cross-section of the second rod 3322 is rectangular, which facilitates the contact and welding of the second rod 3322 with the cylinder 31 and the abutment protrusion 34.

[0057] Reference Figure 7 and Figure 8 The second rod body 3322 includes a first side wall 33221, a second side wall 33222, a third side wall 33223, and a fourth side wall 33224; the first side wall 33221 and the third side wall 33223 are arranged opposite to each other, and the second side wall 33222 and the fourth side wall 33224 are arranged opposite to each other; the fourth side wall 33224 is pressed against the inner side wall of the cylinder 31, and the upper part of the third side wall 33223 is attached to the side wall of the arc-shaped side plate 341; the second side wall 33222 is fixedly connected to the inner wall of the arc-shaped side plate 341, and the first side wall 33221 is fixedly connected to the inner side wall of the cylinder 31.

[0058] Reference Figure 4 , Figure 6 and Figure 7 The height of the insertion hole 311 is equal to the height of the top of the side wall of the abutment protrusion 34, and the side wall of the insertion hole 311 is coplanar with the side wall of the arc-shaped side plate 341, so that the second pull rod 332 can be as close as possible to the abutment protrusion 34 after being inserted into the insertion hole 311, so as to facilitate welding and fixing.

[0059] Reference Figure 8The first side wall 33221 is welded and fixed to the inner side wall of the cylinder 31, that is, it is fixedly connected through the first weld 312; the second side wall 33222 is fixedly connected to the inner wall of the arc-shaped side plate 341, that is, it is fixedly connected through the second weld 3411.

[0060] Reference Figure 10 The lower part of the third side wall 33223 is fixedly connected to the inner wall of the arc-shaped side plate 341 by welding, that is, by the third weld 313.

[0061] Reference Figure 7 The bottom height of the second rod 3322 is lower than the bottom height of the abutting protrusion 34, allowing the height of the second rod 3322 to be higher than the height of the abutting protrusion 34; that is, to maximize the length of the first weld 312, thereby increasing the connection force between the second rod 3322 and the cylinder 31, so as to apply sufficient tensile force to the first rod 3321 and prevent the first rod 3321 from detaching. (Refer to...) Figure 3 and Figure 7 The movable end of the vibration isolator 4 is provided with a receiving groove on the side wall to accommodate the second rod 3322, the first weld 312, and the third weld 313. During construction, the fixed end of the vibration isolator 4 is fixedly connected to the roadbed (e.g., by bolt or by casting). The movable end of the vibration isolator 4 extends into the inner cavity of the cylinder 31 and inserts the second rod 3322 into the receiving groove. This can prevent the movable end and the fixed end of the vibration isolator 4 from rotating relative to each other (the extension and contraction of the spring inside the vibration isolator 4 will generate torque on the movable end and the fixed end). This avoids wear on the roadbed / abutment protrusion 34 / movable end / fixed end and reduction in support height caused by rotation, thereby improving the flatness and service life of the subway track.

[0062] The number of second connecting rods 332 is equal to the number of abutment protrusions 34; the second connecting rods 332 and abutment protrusions 34 are installed in a one-to-one correspondence, thereby improving the uniformity of the connection.

[0063] Reference Figure 5 and Figure 7 The height of the first connecting rod 331 is lower than the height of the first rod body 3321, and the first connecting rod 331 is located diagonally below the first rod body 3321, thereby improving the uniformity of the connection. The number of first connecting rods 331 is equal to the number of second connecting rods 332. The first connecting rods 331 are arranged in a circumferential array along the cylinder 31 at equal angles and intervals. The first connecting rods 331 are located below the gap between adjacent second connecting rods 332, thereby improving the uniformity of the connection.

[0064] Reference Figure 9 and Figure 10The second rod 3322 is provided with a C-shaped embedding part 33225, and the arc-shaped side plate 341 is provided with an embedding groove 3412 adapted to the embedding part 33225. The embedding part 33225 is placed in the embedding groove 3412 and is fixedly connected by welding through the second weld 3411. The inner side wall of the cylinder 31 is fixedly connected with a snap-fit ​​protrusion 314 (for example, by bolt fixing or by integral fixing). The top wall, side wall and bottom wall of one end of the snap-fit ​​protrusion 314 abut against the top wall, side wall and bottom wall of the inner cavity of the embedding part 33225, respectively. The snap-fit ​​protrusion 314 applies a pulling force to the embedding part 33225 and further pulls the first rod 3321, thereby preventing the second pulling rod 332 from being pulled out. This is used to compensate for the problem of easy corrosion of the weld leading to a decrease in the pulling force and to improve the pulling strength between the cylinder 31 and the track bed 1.

[0065] The cylinder 31 is a cylindrical shape with a constant diameter.

[0066] The first connecting rod 331 and the second rod body 3322 are both inserted into the track bed 1 and covered with concrete to prevent corrosion. The end of the first connecting rod 331 away from the cylinder 31 is fixedly connected to the steel mesh with bolts, and the end of the second connecting rod 332 away from the cylinder 31 is bent and hooks the steel mesh in the track bed 1, thereby increasing the tension between the connecting assembly 33 and the track bed 1 and improving the structural stability of this utility model.

[0067] This utility model has a simple structure and reliable function. The outer sleeve 3 of the vibration isolator includes a cylinder 31, an extension fin 32, a connecting component 33, and an abutment protrusion 34. The abutment protrusion 34 is used to realize the installation of the vibration isolator 4. The extension fin 32 and the connecting component 33 work together to improve the connection force between the cylinder 31 and the concrete, thereby compensating for the problem of insufficient connection force caused by vibration defects, improving product quality, and ensuring driving safety.

[0068] In the description of this utility model, it should be noted that the terms "upper", "lower", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0069] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," and "connect" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or a connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0070] In conclusion, for those skilled in the art, any changes, modifications, substitutions, or variations made to this utility model based on its guidance, without departing from its principles and spirit, shall still fall within the protection scope of this utility model.

Claims

1. A steel spring floating plate, characterized in that: Includes a track bed (1), the top surface of which is provided with a first boss (2) for supporting the track, and the track bed (1) is provided with a vibration isolator outer sleeve (3) for installing vibration isolators (4). The outer sleeve (3) of the vibration isolator includes a cylinder (31), an extension fin (32), a tie assembly (33), an abutment protrusion (34), an inner extension fin (35), and a cover plate (36). The extended fin (32) is annular and located at the bottom of the outer side wall of the cylinder (31); the inner extended fin (35) is located at the top of the inner side wall of the cylinder (31); the cover plate (36) is detachably connected to the inner extended fin (35); the abutting protrusion (34) is located in the middle of the inner side wall of the cylinder (31) for abutting the vibration isolator (4). The connecting assembly (33) includes a first connecting rod (331) and a second connecting rod (332) disposed on the side wall of the cylinder (31).

2. The steel spring floating plate according to claim 1, characterized in that: The abutting protrusion (34) includes an arc-shaped side plate (341), a first protruding rib (342), a second protruding rib (343), and a third protruding rib (344); the outer wall of the arc-shaped side plate (341) is attached to and fixedly connected to the inner wall of the cylinder (31); the first protruding rib (342) and the second protruding rib (343) are both horizontally placed and located at the top and bottom edges of the inner wall of the arc-shaped side plate (341); the third protruding rib (344) is vertically placed and located in the middle of the inner wall of the arc-shaped side plate (341). The first rib (342), the second rib (343) and the third rib (344) are respectively fixedly connected to the arc-shaped side plate (341); The first rib (342), the second rib (343), and the third rib (344) are arranged in an I-shape.

3. The steel spring floating plate according to claim 2, characterized in that: The first connecting rod (331) is straight; the first connecting rod (331) is arranged radially along the cylinder (31), and the first connecting rod (331) is fixedly connected to the outer wall of the cylinder (31).

4. The steel spring floating plate according to claim 3, characterized in that: The first tie rod (331) has an L-shaped cross-section.

5. The steel spring floating plate according to claim 4, characterized in that: The second connecting rod (332) includes a first rod body (3321) and a second rod body (3322) fixedly connected in a figure-7 shape; the first rod body (3321) is arranged radially along the cylinder (31), and the second rod body (3322) is arranged axially along the cylinder (31); the first rod body (3321) is fixedly connected to the outer side wall of the cylinder (31), and the second rod body (3322) is fixedly connected to the inner side wall of the cylinder (31).

6. The steel spring floating plate according to claim 5, characterized in that: The side wall of the cylinder (31) is provided with a plug hole (311), and the first rod (3321) is plugged into the plug hole (311).

7. The steel spring floating plate according to claim 6, characterized in that: The cross-section of the second rod (3322) is rectangular.

8. The steel spring floating plate according to claim 7, characterized in that: The second rod body (3322) includes a first side wall (33221), a second side wall (33222), a third side wall (33223), and a fourth side wall (33224); the first side wall (33221) and the third side wall (33223) are arranged opposite to each other, and the second side wall (33222) and the fourth side wall (33224) are arranged opposite to each other; the fourth side wall (33224) is pressed against the inner side wall of the cylinder (31), and the upper part of the third side wall (33223) is attached to the side wall of the arc-shaped side plate (341); the second side wall (33222) is fixedly connected to the inner wall of the arc-shaped side plate (341), and the first side wall (33221) is fixedly connected to the inner side wall of the cylinder (31).

9. The steel spring floating plate according to claim 8, characterized in that: The cover plate (36) and the inner elongation fin (35) are detachably connected by bolts.

10. The steel spring floating plate according to any one of claims 1-9, characterized in that: The cylinder (31) is a cylindrical shape with a constant diameter.

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