Integrated prefabricated pump station with anti-floating base design

Abstract

The utility model relates to prefabricated pump station technical field, and disclose a kind of integrated prefabricated pump station with anti-floating base design, including prefabricated pump station bucket and prefabricated pump station base, and the lower connecting seat of lower-embedded installation located in prefabricated pump station base, the two sides of the prefabricated pump station bucket outside are respectively provided with water outlet and water inlet.The integrated prefabricated pump station with anti-floating base design, by four auxiliary tensile components, can evenly dispersed from the tensile force of the upward buoyancy around pump station, completely avoid the damage of connecting part caused by single direction stress concentration, double-layer support frame formed by outer lower connecting beam and inner lower connecting beam, cooperate with the design of the distribution of 'chuan' character and the number doubling of outside, can cover more bottom area and strengthen outside support pertinently, transverse and longitudinal cross arrangement, cross section presents the anti-floating hook plate of'' character, can expand the occlusal range and contact area with ground soil, significantly improve the grip to enhance anti-floating resistance.

Description

Technical Field

[0001] This utility model relates to the field of prefabricated pumping station technology, specifically an integrated prefabricated pumping station with an anti-floating base design. Background Technology

[0002] Integrated prefabricated pumping stations are integrated and modular sewage or rainwater conveying and lifting equipment, mainly used to solve the problems of sewage not being able to flow by gravity and rainwater accumulation and difficulty in drainage in low-lying areas. Widely used in modern drainage systems, they are characterized by "factory prefabrication and on-site assembly." They consist of key components such as high-strength fiberglass or carbon steel prefabricated tanks, submersible pump sets, intelligent control systems, gratings, and pipeline valves. These components are assembled and debugged in the factory and then transported to the site. Only pipe network connection and foundation fixing are required, and they can be put into operation in as little as a few weeks, a construction period far shorter than the months of traditional concrete pumping stations. Compared to traditional pumping stations, they also have advantages such as small footprint (vertical cylindrical structure saves space, suitable for urban core areas), high level of intelligence (automatic monitoring of liquid level, adjustment of pump start and stop, and support for remote operation and maintenance), and good sealing (effectively isolates odors and reduces environmental impact). Currently, they are widely used in municipal drainage networks, residential areas, industrial parks, road green belts, and large public facilities such as high-speed rail stations and airports to meet drainage needs, making them key equipment for solving urban flooding and sewage collection.

[0003] Chinese Utility Model Patent Publication No. CN218028122U discloses an integrated prefabricated pumping station. The specification of the integrated prefabricated pumping station discloses that: This utility model discloses an integrated prefabricated pumping station, including an integrated prefabricated pumping station body and a heat dissipation equipment body. The outer wall of the integrated prefabricated pumping station body is fixedly provided with a mounting frame for disassembling and assembling the heat dissipation equipment body. The top of the mounting frame is provided with a positioning slot for the heat dissipation equipment body to be inserted and positioned. The top of the positioning slot is rotatably mounted with a strip baffle for restricting the heat dissipation equipment body through an opening in the mounting slot. This invention uses a mounting frame to support the main body of the heat dissipation equipment, and the two are quickly installed and positioned by interlocking snap-fit ​​connections. Finally, a strip plate with a rotatable mounting slot on the mounting frame limits and fixes the main body of the heat dissipation equipment. This not only achieves stable installation of the main body of the heat dissipation equipment, but also simplifies disassembly and improves ease of use. However, this integrated prefabricated pump station lacks anti-buoyancy structures. The bearing capacity of soft soil is weak, and it cannot provide a stable bottom support for the pump station. When rainwater seeps in or the groundwater level rises, the pump station will be subjected to upward buoyancy. Furthermore, the buoyancy can easily exceed the pump station's own weight. Due to the lack of a restraining structure to counteract the buoyancy, the pump station cannot balance the upward force. This can result in minor horizontal displacement or slight vertical floating, leading to misalignment and sealing failure of the inlet and outlet pipe interfaces. In severe cases, it can cause the base to detach from the foundation, the tank to tilt, or even collision damage to core components such as the internal submersible pump set and control system. This can not only cause sewage leakage that pollutes the surrounding soil and groundwater, but also directly interrupt drainage operations, leading to the risk of flooding. At the same time, it can significantly increase the difficulty of later maintenance and operation and maintenance costs, making it difficult to adapt to complex installation environments with high humidity and high groundwater levels. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this utility model provides an integrated prefabricated pump station with an anti-floating base design to solve the problems mentioned in the background.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an integrated prefabricated pumping station with an anti-floating base design, comprising a prefabricated pumping station tank and a prefabricated pumping station base, and a lower connecting seat pre-embedded and installed at the lower part of the prefabricated pumping station base. The prefabricated pumping station tank has an outlet and an inlet on both sides of its exterior. The prefabricated pumping station base and the lower connecting seat are fixedly installed by a ring of locking bolts. An auxiliary tensile component is provided between the prefabricated pumping station base and the lower connecting seat. A reinforcing component is provided at the bottom of the lower connecting seat. The auxiliary tensile component includes an upper ear seat and a lower ear seat. The upper ear seat is fixedly connected to the prefabricated pump station tank, and the lower ear seat is fixedly connected to the lower connecting seat. The upper ear seat and the lower ear seat are provided with tension cables.

[0006] Preferably, there are four identical auxiliary tensile resistance assemblies, and the four auxiliary tensile resistance assemblies are distributed in a cross shape about the vertical axis of the prefabricated pumping station barrel.

[0007] Through the above technical solution, the four auxiliary tensile resistance assemblies can uniformly disperse the pulling force from the periphery of the prefabricated pumping station barrel, avoiding damage to the connecting part caused by stress concentration in a single direction, further improving the overall anti-floating stability of the prefabricated pumping station, and ensuring that it can resist evenly from multiple directions when subjected to upward buoyancy.

[0008] Preferably, the upper lug seat and the prefabricated pumping station barrel are formed by integral injection molding, and the lower lug seat and the lower connecting seat are formed by casting.

[0009] Through the above technical solution, the upper lug seat and the prefabricated pumping station barrel, and the lower lug seat and the lower connecting seat can form an integral structure without splicing gaps, which greatly improves the connection strength between the lug seats and the corresponding components, avoids the failure of the auxiliary tensile resistance assembly caused by the loosening and falling off of the lug seats, and fundamentally guarantees the reliability of the anti-floating structure.

[0010] Preferably, the reinforcing assembly comprises an outer lower connecting beam and an inner lower connecting beam, the bottom end of the outer lower connecting beam is fixedly installed with outer connecting posts distributed at equal intervals, the bottom end of the inner lower connecting beam is fixedly installed with inner connecting posts distributed at equal intervals, first anti-floating hook plates arranged at equal intervals are arranged below the outer lower connecting beam, second anti-floating hook plates arranged at equal intervals are arranged below the inner lower connecting beam, a first positioning block is fixedly installed at the top end of the first anti-floating hook plate, a first locking pin is arranged between the first positioning block and the outer connecting post, a second positioning block is fixedly installed at the top end of the second anti-floating hook plate, and a second locking pin is arranged between the second positioning block and the inner connecting post.

[0011] Through the above technical solution, the outer lower connecting beam and the inner lower connecting beam can form a double-layer bottom support frame, and cooperating with the connection of the outer connecting posts, the inner connecting posts and the anti-floating hook plates, the anti-floating hook plates can be firmly embedded inside the foundation. Meanwhile, the first locking pin and the second locking pin can lock the connection positions of all components, so that the reinforcing assembly, the lower connecting seat and the foundation form a stable whole, which increases the anti-floating resistance from the bottom and effectively prevents the prefabricated pumping station from floating upward.

[0012] Preferably, the outer lower connecting beams and the inner lower connecting beams are distributed at the bottom end of the lower connecting seat in a "Chuan" shape, and the number of the outer lower connecting beams is twice that of the inner lower connecting beams.

[0013] Through the above technical solution, the "Chuan"-shaped distribution enables the connecting beams to form a uniform force-bearing support network at the bottom end of the lower connecting seat, covering more bottom area and avoiding local force overload. Since the number of the outer lower connecting beams is twice that of the inner lower connecting beams, the support strength at the outer side of the lower connecting seat can be strengthened in a targeted manner, adapting to the larger buoyancy effect at the outer side, and further optimizing the bottom anti-floating force structure.

[0014] Preferably, the outer connecting post and the first alignment block are connected by a plug-in connection, the first locking pin passes through the outer connecting post and the first alignment block, the inner connecting post and the second alignment block are connected by a plug-in connection, and the second locking pin passes through the inner connecting post and the second alignment block.

[0015] Through the above technical solutions, the plug-in connection can quickly achieve precise positioning of the connecting column and the alignment block, reducing the difficulty of installation. The through-type fixing of the locking pin can prevent relative sliding or separation between the connecting column and the alignment block, ensuring that the anti-floating hook plate is always firmly connected to the reinforcement component, and avoiding a decrease in the anti-floating effect due to loose parts.

[0016] Preferably, the first anti-floating hook plate is arranged horizontally, the second anti-floating hook plate is arranged vertically, the number of the first anti-floating hook plate is twice that of the second anti-floating hook plate, and the cross-sections of the first and second anti-floating hook plates are both in the shape of a "︺".

[0017] Through the above technical solution, the horizontally and vertically arranged anti-buoyancy hook plates can form a cross-force structure, interlocking with the foundation soil from different directions to expand the anti-buoyancy force range. The "︺" shaped cross section can increase the contact area and gripping force between the hook plate and the soil, reducing the upward pulling force of buoyancy on the hook plate. At the same time, the number of the first anti-buoyancy hook plates is adapted to the outer lower connecting beam, which can strengthen the anti-buoyancy force on the outside and comprehensively improve the bottom anti-buoyancy capability.

[0018] Compared with the prior art, this utility model provides an integrated prefabricated pump station with an anti-floating base design, which has the following beneficial effects: 1. This integrated prefabricated pump station with an anti-buoyancy base design uses four auxiliary tensile components arranged in a cross shape to evenly distribute the tensile force generated by buoyancy from all around the pump station. This completely avoids damage to the connection parts caused by concentrated force in one direction, ensuring balanced resistance to buoyancy in multiple directions. At the same time, the one-piece injection molding of the upper ear seat and the pump station barrel, and the casting molding of the lower ear seat and the lower connecting seat, make the ear seat and the corresponding parts form a seamless overall structure, which greatly improves the connection strength and eliminates the problem of tensile component failure caused by loosening or falling off the ear seat, fundamentally ensuring the long-term reliability of the anti-buoyancy structure. 2. The integrated prefabricated pumping station with an anti-up floating base design, wherein a double-layer support frame formed by an outer lower connecting beam and an inner lower connecting beam, in cooperation with the "川-shaped" (Chinese character shaped like three parallel vertical strokes) distribution and the design of doubled quantity on the outer side, can cover more bottom area and strengthen the outer support in a targeted manner, effectively disperse buoyancy and avoid local overload; the anti-floating hook plates arranged crosswise in transverse and longitudinal directions and having an "︺"-shaped cross section can enlarge the engagement range and contact area with foundation soil, significantly improve the gripping force to enhance anti-floating resistance; and the plug-in design of the connecting column and the alignment block, fixed by locking pins, not only reduces the installation difficulty to achieve accurate positioning, but also prevents relative sliding or separation of components, ensures that the reinforcement assembly, the foundation and the lower connecting base form a stable whole, and comprehensively prevents the pumping station from floating upward. Description of Drawings

[0019] Figure 1 is a schematic diagram of the three-dimensional structure of the present utility model Figure 1 ; Figure 2 is a schematic diagram of the three-dimensional structure of the present utility model Figure 2 ; Figure 3 is a half-sectional structural schematic diagram of the present utility model; Figure 4 is a local half-sectional structural schematic diagram of the present utility model; Figure 5 is a schematic diagram of an installation structure of a base and a lower connecting base of the prefabricated pumping station of the present utility model; Figure 6 is a schematic diagram of an installation structure of a lower connecting base and an auxiliary tension-resistant assembly of the present utility model; Figure 7 is a schematic diagram of an installation structure of a reinforcement assembly and a lower connecting base of the present utility model; Figure 8 is a schematic diagram of a distribution structure of a first anti-floating hook plate and a second anti-floating hook plate of the present utility model.

[0020] Wherein: 1, prefabricated pumping station barrel; 2, prefabricated pumping station base; 3, water outlet; 4, water inlet; 5, lower connecting base; 6, auxiliary tension-resistant assembly; 601, upper ear seat; 602, lower ear seat; 603, pull cable; 7, reinforcement assembly; 701, outer lower connecting beam; 702, inner lower connecting beam; 703, outer connecting column; 704, inner connecting column; 705, first alignment block; 706, first locking pin; 707, first anti-floating hook plate; 708, second alignment block; 709, second locking pin; 710, second anti-floating hook plate; 8, locking bolt. Detailed Description of Embodiments

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Example 1: like Figure 1-8 As shown, this utility model provides an integrated prefabricated pumping station with an anti-floating base design, including a prefabricated pumping station tank 1 and a prefabricated pumping station base 2, and a lower connecting seat 5 pre-embedded in the lower part of the prefabricated pumping station base 2. The two sides of the exterior of the prefabricated pumping station tank 1 are respectively provided with an outlet 3 and an inlet 4. The prefabricated pumping station base 2 and the lower connecting seat 5 are fixedly installed by a ring of locking bolts 8. An auxiliary tensile component 6 is provided between the prefabricated pumping station base 2 and the lower connecting seat 5. A reinforcing component 7 is provided at the bottom of the lower connecting seat 5.

[0023] Example 2: like Figure 2-8 As shown, this is an improvement on the previous embodiment.

[0024] The auxiliary tensile component 6 includes an upper ear seat 601 and a lower ear seat 602. The upper ear seat 601 is fixedly connected to the precast pump station barrel 1, and the lower ear seat 602 is fixedly connected to the lower connecting seat 5. The upper ear seat 601 and the lower ear seat 602 are provided with a cable 603. There are four identical auxiliary tensile components 6. The four auxiliary tensile components 6 are distributed in a cross shape about the vertical axis of the precast pump station barrel 1. The upper ear seat 601 and the precast pump station barrel 1 are integrally injection molded, and the lower ear seat 602 and the lower connecting seat 5 are cast. The advantages are that the four auxiliary tensile components 6 can evenly distribute the tensile force from all sides of the prefabricated pump station barrel 1, avoiding damage to the connection parts caused by concentrated force in one direction, further improving the overall anti-buoyancy stability of the prefabricated pump station, ensuring that it can resist upward buoyancy in a balanced manner from multiple directions, and allowing the upper ear seat 601 and the prefabricated pump station barrel 1, and the lower ear seat 602 and the lower connecting seat 5 to form a seamless integral structure, greatly improving the connection strength between the ear seat and the corresponding component, avoiding the failure of the auxiliary tensile components 6 due to loosening or falling off of the ear seat, and fundamentally ensuring the reliability of the anti-buoyancy structure.

[0025] Example 3: like Figure 2-8 As shown, as an improvement on the previous embodiment, further anti-buoyancy capability is achieved.

[0026] Specifically, the reinforcing assembly 7 comprises an outer lower connecting beam 701 and an inner lower connecting beam 702, wherein outer connecting columns 703 distributed at equal intervals are fixedly mounted at the bottom end of the outer lower connecting beam 701, inner connecting columns 704 distributed at equal intervals are fixedly mounted at the bottom end of the inner lower connecting beam 702, first anti-floating hook plates 707 arranged at equal intervals are arranged below the outer lower connecting beam 701, second anti-floating hook plates 710 arranged at equal intervals are arranged below the inner lower connecting beam 702, first alignment blocks 705 are fixedly mounted at the top ends of the first anti-floating hook plates 707, a first locking pin 706 is arranged between each first alignment block 705 and the corresponding outer connecting column 703, second alignment blocks 708 are fixedly mounted at the top ends of the second anti-floating hook plates 710, and a second locking pin 709 is arranged between each second alignment block 708 and the corresponding inner connecting column 704. The advantage is that the outer lower connecting beam 701 and the inner lower connecting beam 702 can form a double-layer bottom supporting frame, and cooperating with the connection of the outer connecting columns 703, the inner connecting columns 704 and the anti-floating hook plates, the anti-floating hook plates can be firmly embedded into the foundation. Meanwhile, the first locking pins 706 and the second locking pins 709 can lock the connecting positions of all components, so that the reinforcing assembly 7, the lower connecting seat 5 and the foundation form a stable whole, which increases anti-floating resistance from the bottom and effectively prevents the prefabricated pumping station from floating upward.

[0027] Specifically, the outer lower connecting beams 701 and the inner lower connecting beams 702 are distributed in a "川"-shaped pattern at the bottom end of the lower connecting seat 5, and the number of the outer lower connecting beams 701 is twice that of the inner lower connecting beams 702. The advantage is that the "川"-shaped distribution enables the connecting beams to form a uniform stress supporting network at the bottom end of the lower connecting seat 5, which covers more bottom areas and avoids local stress overload. Since the number of the outer lower connecting beams 701 is twice that of the inner lower connecting beams 702, the supporting strength of the outer side of the lower connecting seat 5 can be strengthened in a targeted manner, which adapts to the larger buoyancy effect on the outer side and further optimizes the bottom anti-floating stress structure.

[0028] Specifically, the outer connecting columns 703 are connected with the first alignment blocks 705 in a plug-in manner, the first locking pins 706 penetrate through the outer connecting columns 703 and the first alignment blocks 705, the inner connecting columns 704 are connected with the second alignment blocks 708 in a plug-in manner, and the second locking pins 709 penetrate through the inner connecting columns 704 and the second alignment blocks 708. The advantage is that the plug-in connection can quickly realize the accurate positioning between the connecting columns and the alignment blocks and reduces the installation difficulty, while the penetrating fixing of the locking pins can eliminate the relative sliding or separation between the connecting columns and the alignment blocks, ensures that the anti-floating hook plates are always stably connected with the reinforcing assembly 7, and avoids the decrease of the anti-floating effect caused by loose components.

[0029] Specifically, the first anti-buoyancy hook plate 707 adopts a transverse arrangement design, while the second anti-buoyancy hook plate 710 adopts a longitudinal arrangement design. The number of the first anti-buoyancy hook plates 707 is twice that of the second anti-buoyancy hook plates 710. The cross-sections of both the first anti-buoyancy hook plates 707 and the second anti-buoyancy hook plates 710 are in the shape of a "︺" shaped structure. The advantage is that the transversely and longitudinally arranged anti-buoyancy hook plates can form a cross-force structure, interlocking with the foundation soil from different directions, expanding the anti-buoyancy force range. The "︺" shaped cross-section can increase the contact area and gripping force between the hook plate and the soil, reducing the upward pulling force of buoyancy on the hook plate. At the same time, the number of the first anti-buoyancy hook plates 707 is adapted to the outer lower connecting beam 701, which can strengthen the anti-buoyancy force on the outside and comprehensively improve the bottom anti-buoyancy capability.

[0030] Working principle: In use, the reinforcing component 7 is first installed below the lower connecting seat 5. The outer connecting column 703 is precisely aligned with the first alignment block 705, and the inner connecting column 704 with the second alignment block 708 via a plug-in connection. Then, the first locking pin 706 and the second locking pin 709 are inserted to lock the position, ensuring that the outer lower connecting beam 701, the inner lower connecting beam 702, and the first anti-buoyancy hook plate 707 and the second anti-buoyancy hook plate 710, which are arranged in a "︺" shape, form a stable whole. Next, the lower connecting seat 5 is pre-embedded in the preset foundation position, allowing the reinforcing component 7 to embed into the foundation. This ensures that the horizontally and vertically arranged anti-buoyancy hook plates fully engage with the soil, constructing initial anti-buoyancy support from the bottom. Then, the prefabricated pump station tank 1 is hoisted above the prefabricated pump station base 2, and the prefabricated pump station base 2 is secured using the ring-shaped locking bolts 8. The bottom connection seat 5 is tightly fixed to complete the initial connection between the main body of the pump station and the bottom structure. Then, the two ends of the cable 603 are connected to the upper ear seat 601 of the prefabricated pump station barrel 1 and the lower ear seat 602 of the lower connection seat 5, so that the four auxiliary tensile components 6 distributed in a "+" shape are in a taut state. When the pump station encounters upward buoyancy, the bottom reinforcement component 7 takes the lead. The anti-buoyancy hook plate generates reverse anti-buoyancy resistance by interlocking with the soil. The double-layer support frame disperses the buoyancy to the entire bottom structure. If the buoyancy is large and causes the prefabricated pump station barrel 1 to have an upward tendency, the cable 603 of the auxiliary tensile component 6 will be stressed at the same time, generating reverse tension from all sides to offset part of the buoyancy. The integrated ear seat ensures stable transmission of tension. Finally, the bottom reinforcement and the surrounding tensile components form a synergistic anti-buoyancy system to prevent the pump station from floating as a whole and ensure stable operation.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An integrated prefabricated pumping station with an anti-floating base design, comprising a prefabricated pumping station tank (1) and a prefabricated pumping station base (2), and a lower connecting seat (5) pre-embedded and installed at the lower part of the prefabricated pumping station base (2), characterized in that: A water outlet (3) and a water inlet (4) are respectively provided on two sides outside the prefabricated pumping station barrel (1), the prefabricated pumping station base (2) and the lower connecting seat (5) are fixedly installed through locking bolts (8) distributed in an annular shape, an auxiliary tensile resistance assembly (6) is provided between the prefabricated pumping station base (2) and the lower connecting seat (5), and a reinforcement assembly (7) is provided at the bottom end of the lower connecting seat (5); The auxiliary tensile resistance assembly (6) comprises an upper lug seat (601) and a lower lug seat (602), the upper lug seat (601) is fixedly connected with the prefabricated pumping station barrel (1), the lower lug seat (602) is fixedly connected with the lower connecting seat (5), and a pull cable (603) is provided between the upper lug seat (601) and the lower lug seat (602).

2. The integrated prefabricated pumping station with an anti-floating base design according to claim 1, characterized in that: There are four identical auxiliary tensile resistance assemblies (6), and the four auxiliary tensile resistance assemblies (6) are distributed in a cross shape about the vertical axis of the prefabricated pumping station barrel (1).

3. An integrated prefabricated pumping station with an anti-floating base design according to claim 1, characterized in that: The upper lug seat (601) and the prefabricated pumping station barrel (1) are formed by integral injection molding, and the lower lug seat (602) and the lower connecting seat (5) are formed by pouring.

4. An integrated prefabricated pumping station with an anti-floating base design according to claim 1, characterized in that: The reinforcement assembly (7) comprises an outer lower connecting beam (701) and an inner lower connecting beam (702), outer connecting columns (703) distributed at equal intervals are fixedly installed at the bottom end of the outer lower connecting beam (701), inner connecting columns (704) distributed at equal intervals are fixedly installed at the bottom end of the inner lower connecting beam (702), first anti-floating hook plates (707) arranged at equal intervals are provided below the outer lower connecting beam (701), second anti-floating hook plates (710) arranged at equal intervals are provided below the inner lower connecting beam (702), a first alignment block (705) is fixedly installed at the top end of the first anti-floating hook plate (707), a first locking pin (706) is provided between the first alignment block (705) and the outer connecting column (703), a second alignment block (708) is fixedly installed at the top end of the second anti-floating hook plate (710), and a second locking pin (709) is provided between the second alignment block (708) and the inner connecting column (704).

5. An integrated prefabricated pumping station with an anti-floating base design according to claim 4, characterized in that: The outer lower connecting beams (701) and the inner lower connecting beams (702) are distributed at the bottom end of the lower connecting seat (5) in a "chuan" shape, and the number of the outer lower connecting beams (701) is twice that of the inner lower connecting beams (702).

6. An integrated prefabricated pumping station with an anti-floating base design according to claim 4, characterized in that: The outer connecting column (703) is plugged connected with the first alignment block (705), the first locking pin (706) penetrates through the outer connecting column (703) and the first alignment block (705), the inner connecting column (704) is plugged connected with the second alignment block (708), and the second locking pin (709) penetrates through the inner connecting column (704) and the second alignment block (708).

7. An integrated prefabricated pumping station with an anti-floating base design according to claim 4, characterized in that: The first anti-floating hook plates (707) adopt a horizontal arrangement design, the second anti-floating hook plates (710) adopt a longitudinal arrangement design, the number of the first anti-floating hook plates (707) is twice that of the second anti-floating hook plates (710), and the cross sections of both the first anti-floating hook plates (707) and the second anti-floating hook plates (710) are in an "︺" shaped structure.

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