Floating bridge structure of inland wharf

Abstract

The application discloses an inland river wharf floating bridge structure, which comprises a floating block, the upper end of the floating block is fixedly connected with a support steel plate, the outer wall of the support steel plate is provided with a plurality of mounting holes, the inner wall of the mounting hole is threadedly connected with a screw rod, and one end of the support steel plate is fixedly connected with an insertion plate; the insertion plate on one support steel plate is inserted into the insertion slot on another support steel plate to fix the two support steel plates, and the two support steel plates are fixed together through the screw rod, so that the laying of the lengthened floating bridge is realized; the buffer mechanism is used to buffer the impacting seawater, so that the seawater impact on the floating block and the support steel plate is reduced, the floating block and the support steel plate are protected, the anti-rust mechanism is used to avoid the rust of the support steel plate, the adjusting mechanism is used to adjust the weight of the floating block, so that the wind and wave resistance of the floating block is improved, and the shaking degree of the floating block impacted by the seawater is reduced.

Description

Technical Field

[0001] This invention relates to the field of floating bridge structure technology. Background Technology

[0002] With the rise of yacht marinas along the eastern coast, the construction of small floating docks necessitates the installation of fixed structures capable of adapting to water level fluctuations. These fixed structures typically fall into two categories: shore-mounted floating bridge anchoring structures and independent anchoring structures. Independent anchoring structures generally employ either single-pile anchoring or ground-anchored locking mechanisms.

[0003] Under prolonged immersion and impact from seawater, the supporting steel plates and floats at the top of the floating bridge are prone to corrosion. The supporting steel plates are easily damaged by the impact of substances carried by the seawater, especially the outer walls on both sides of the floats, which are extremely vulnerable to seawater impact. This leads to a rapid reduction in the service life of the supporting steel plates and floats. Currently, the supporting steel plates and floats rely solely on their own materials and paint to resist the impact of seawater and prevent corrosion. This results in the need for frequent maintenance of the floating bridge to ensure the normal use of the supporting steel plates and floats. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the poor protection effect of supporting steel plates and floating blocks by providing a floating bridge structure for inland river wharves.

[0005] The technical solution to achieve the above objectives is: a floating bridge structure for an inland river terminal, comprising a buoy, a supporting steel plate fixedly connected to the upper end of the buoy, multiple mounting holes provided on the outer wall of the supporting steel plate, threaded screws connected to the inner wall of the mounting holes, an insert plate fixedly connected to one end of the supporting steel plate, a slot provided at the other end of the supporting steel plate, two symmetrically distributed guardrails fixedly connected to the top of the supporting steel plate, a buffer mechanism provided on the outer wall of the buoy, a rust prevention mechanism provided on the buffer mechanism, and an adjustment mechanism provided inside the buoy.

[0006] Preferably, the buffer mechanism includes a fixed plate, a groove, a slider, a connecting plate, a baffle, and a buffer spring. Multiple fixed plates are fixedly connected to the outer wall of the float. A groove is formed on the outer wall of the fixed plate. Two symmetrically distributed sliders are slidably connected to the inner wall of the groove. A connecting plate is fixedly connected to the outer wall of the slider. A baffle is rotatably connected to the outer wall of the connecting plate. One end of a buffer spring is fixedly connected to both the top and bottom of the groove. The other end of the buffer spring is fixedly connected to the slider.

[0007] Preferably, the rust prevention mechanism includes a placement block, an inner groove, a top hole, a pressure plate, a guide rod, a limiting spring, a zinc block, and an iron chain. The placement block is fixedly connected to the bottom of the outer wall of the baffle. The inner wall of the placement block has an inner groove, and the upper end of the inner groove has a top hole. A zinc block is placed on the inner wall of the inner groove. A pressure plate is slidably connected to the inner wall of the inner groove. A guide rod is fixedly connected to the outer wall of the pressure plate. One end of a limiting spring is connected to the outer surface of the pressure plate. The other end of the limiting spring is fixedly connected to the inner wall of the inner groove. One end of an iron chain is fixedly connected to the top of the zinc block. The other end of the iron chain is fixedly connected to a supporting steel plate.

[0008] Preferably, the adjustment mechanism includes an inner cavity, a motor, a cover plate, an air pump, an air bladder, and a suction pipe. The bottom end of the float has an inner cavity, and the inner wall of the inner cavity is rotatably connected to the cover plate. The inner wall of the float is fixedly connected to the motor, and the output end of the motor is fixedly connected to the cover plate. The inner wall of the cover plate is fixedly connected to the air bladder, and the port of the air bladder is fixedly connected to the output end of the air pump. The inner wall of the float is fixedly connected to the air pump, and the input pipe of the air pump is fixedly connected to the suction pipe. The outer wall of the suction pipe penetrates the outer wall of the float, and an electric valve is provided inside the port of the air bladder.

[0009] Preferably, the outer wall of the baffle is fitted with a rubber sleeve.

[0010] Preferably, the bottom area of ​​the top hole is smaller than the bottom area of ​​the inner groove, and the bottom end of the inner groove is provided with a bottom hole.

[0011] Preferably, the port of the airbag penetrates the center of the bottom end of the cover plate, and a sealing ring is fitted between the port of the airbag and the cover plate. The cover plate and the inner cavity are both incomplete cylindrical shapes.

[0012] Preferably, the outer wall of the suction pipe extends through the top of the guardrail, the air inlet of the suction pipe faces the supporting steel plate, and the outer wall of the float is provided with a counterweight.

[0013] The beneficial effects of this invention are:

[0014] 1) Insert the insert plate on one support steel plate into the slot on another support steel plate to fix the two support steel plates together, and then fix the two support steel plates together with screws to increase the length of the floating bridge. The buffer mechanism is used to buffer the impact of seawater, thereby reducing the impact of seawater on the buoys and support steel plates and protecting them. The anti-rust mechanism is used to prevent the support steel plates from rusting. The adjustment mechanism is used to adjust the weight of the buoys, thereby improving the buoys' wind and wave resistance and reducing the degree of swaying of the buoys when impacted by seawater.

[0015] 2) When seawater impacts the baffle, the baffle pushes the connecting plate to move. The connecting plate then moves the slider on the fixed plate, thereby guiding the impact force of the seawater directly impacting the side wall of the float to the upward movement of the slider, thus reducing the impact force. At the same time, the slider squeezes the buffer spring, and by utilizing the physical properties of the buffer spring, the impact force is further reduced, thus achieving the impact protection effect of the float and the supporting steel plate.

[0016] 3. Fix the zinc block to the iron chain, then pass the zinc block through the top hole and put it into the inner groove. Under the elastic force of the limiting spring, the limiting spring squeezes the pressure plate, causing the pressure plate and the inner wall of the inner groove to squeeze the zinc block. The iron chain connects the zinc block to the supporting steel plate. After the zinc block, iron chain and supporting steel plate are put into seawater, a galvanic cell will be formed. Since the zinc block is more active than the supporting steel plate, the zinc block will be consumed first, thus preventing the supporting steel plate from rusting. After the zinc block is consumed, it will become smaller. The pressure plate squeezed by the limiting spring will continue to squeeze the zinc block, thus preventing the zinc block from shaking randomly and avoiding impact damage.

[0017] 4) Start the motor. The motor drives the cover plate to rotate one revolution. When the cover plate rotates, there is a gap between the cover plate and the inner cavity, allowing seawater to enter the inner cavity and the cover plate. This fills the space between the inner cavity and the cover plate with seawater. Sealing strips are installed on the outer walls of the inner cavity and the cover plate to prevent seawater leakage, thereby increasing the mass of the float. After the waves subside, rotate the opening of the cover plate downwards, open the electric valve, and start the air pump to inflate the air bladder. The air bladder will fill the cover plate. Then close the electric valve to drain the seawater. Rotate the cover plate again to squeeze out the water in the inner cavity, thereby reducing the mass of the float and ensuring the buoyancy of the supporting steel plate. The counterweight balance block is used to balance the uneven force on the float and prevent one side of the float from tilting up. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0019] Figure 2 This is an exploded structural diagram of the present invention;

[0020] Figure 3 This is a bottom-view structural diagram of the present invention;

[0021] Figure 4 This is a cross-sectional side view of the present invention;

[0022] Figure 5 This is a cross-sectional front view of the present invention;

[0023] Figure 6 This is a schematic diagram of the exploded bottom view structure of the present invention;

[0024] Figure 7This is a top-view structural diagram of the invention after an explosion;

[0025] Figure 8 yes Figure 5 Enlarged structural diagram at point A;

[0026] Figure 9 yes Figure 5 Enlarged structural diagram at point B;

[0027] Figure 10 yes Figure 6 A magnified structural diagram at point C.

[0028] 1. Float; 2. Supporting steel plate; 3. Mounting hole; 4. Screw; 5. Insert plate; 6. Slot; 7. Guardrail; 8. Buffer mechanism; 801. Fixing plate; 802. Slide groove; 803. Sliding block; 804. Connecting plate; 805. Baffle; 806. Buffer spring; 9. Rust prevention mechanism; 901. Placement block; 902. Inner groove; 903. Top hole; 904. Pressure plate; 905. Guide rod; 906. Limiting spring; 907. Zinc block; 908. Iron chain; 10. Adjustment mechanism; 1001. Inner cavity; 1002. Motor; 1003. Cover plate; 1004. Air pump; 1005. Airbag; 1006. Air extraction pipe; 11. Bottom hole. Detailed Implementation

[0029] The technical solution of the present invention will now be clearly and completely described in conjunction with the accompanying drawings. In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention 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, and therefore should not be construed as a limitation of the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0030] The invention will now be further described with reference to the accompanying drawings.

[0031] Reference Appendix Figure 1-10A floating bridge structure for an inland river wharf includes a float 1, a supporting steel plate 2 fixedly connected to the upper end of the float 1, multiple mounting holes 3 on the outer wall of the supporting steel plate 2, screws 4 threadedly connected to the inner wall of the mounting holes 3, an insert plate 5 fixedly connected to one end of the supporting steel plate 2, a slot 6 opened at the other end of the supporting steel plate 2, two symmetrically distributed guardrails 7 fixedly connected to the top of the supporting steel plate 2, a buffer mechanism 8 on the outer wall of the float 1, a rust prevention mechanism 9 on the buffer mechanism 8, an adjustment mechanism 10 inside the float 1, and the guardrails 7 can prevent people walking on the supporting steel plate 2 from slipping off the supporting steel plate 2 and falling into the water.

[0032] The insert plate 5 on one support steel plate 2 is inserted into the slot 6 on another support steel plate 2 to fix the two support steel plates 2 together, and the two support steel plates 2 are fixed together by the screw 4, thereby increasing the length of the floating bridge. The buffer mechanism 8 is used to buffer the impact of seawater, thereby reducing the impact of seawater on the float 1 and the support steel plate 2, thus protecting the float 1 and the support steel plate 2. The anti-rust mechanism 9 is used to prevent the support steel plate 2 from rusting. The adjustment mechanism 10 is used to adjust the weight of the float 1, thereby improving the wind and wave resistance of the float 1 and reducing the degree of swaying of the float 1 when impacted by seawater.

[0033] Reference Appendix Figure 1-8 The buffer mechanism 8 includes a fixed plate 801, a slide groove 802, a slider 803, a connecting plate 804, a baffle 805, and a buffer spring 806. Multiple fixed plates 801 are fixedly connected to the outer wall of the float 1. The outer wall of the fixed plate 801 is provided with a slide groove 802. Two symmetrically distributed sliders 803 are slidably connected to the inner wall of the slide groove 802. The outer wall of the slider 803 is fixedly connected to a connecting plate 804. The outer wall of the connecting plate 804 is rotatably connected to a baffle 805. One end of the buffer spring 806 is fixedly connected to both the top and bottom of the slide groove 802. The other end of the buffer spring 806 is fixedly connected to the slider 803. A rubber sleeve is provided on the outer wall of the baffle 805. The rubber sleeve can be used to protect the baffle 805 and extend the service life of the baffle 805.

[0034] When seawater impacts the baffle 805, the baffle 805 pushes the connecting plate 804 to move. The connecting plate 804 then moves the slider 803 on the fixed plate 801, thereby guiding the impact force of the seawater directly impacting the side wall of the float 1 to the upward movement of the slider 803, thus reducing the impact force. At the same time, the slider 803 compresses the buffer spring 806, and by utilizing the physical properties of the buffer spring 806, the impact force is further reduced, thus achieving the impact protection effect for the float 1 and the supporting steel plate 2.

[0035] Reference Appendix Figure 5-9The rust prevention mechanism 9 includes a placement block 901, an inner groove 902, a top hole 903, a pressure plate 904, a guide rod 905, a limit spring 906, a zinc block 907, and an iron chain 908. The placement block 901 is fixedly connected to the bottom of the outer wall of the baffle 805. The inner wall of the placement block 901 has an inner groove 902, and the upper end of the inner groove 902 has a top hole 903. The zinc block 907 is placed on the inner wall of the inner groove 902. The pressure plate 904 is slidably connected to the inner wall of the inner groove 902, and the guide rod is fixedly connected to the outer wall of the pressure plate 904. 905, one end of a limiting spring 906 is connected to the outer surface of the pressure plate 904, and the other end of the limiting spring 906 is fixedly connected to the inner wall of the inner groove 902. One end of an iron chain 908 is fixedly connected to the top of the zinc block 907, and the other end of the iron chain 908 is fixedly connected to the supporting steel plate 2. The bottom area of ​​the top hole 903 is smaller than the bottom area of ​​the inner groove 902. A bottom hole 11 is opened at the bottom end of the inner groove 902. The bottom hole 11 allows seawater to contact the bottom of the zinc block 907, increasing the contact area between the seawater and the zinc block 907.

[0036] The zinc block 907 is fixed to the iron chain 908, and then the zinc block 907 is passed through the top hole 903 and placed into the inner groove 902. Under the elastic force of the limiting spring 906, the limiting spring 906 compresses the pressure plate 904, so that the pressure plate 904 and the inner wall of the inner groove 902 compress the zinc block 907. The iron chain 908 connects the zinc block 907 to the supporting steel plate 2. After the zinc block 907, iron chain 908 and supporting steel plate 2 are put into seawater, a galvanic cell will be formed. Since the zinc block 907 is more active than the supporting steel plate 2, the zinc block 907 will be consumed first, thereby preventing the supporting steel plate 2 from rusting. After the zinc block 907 is consumed, the zinc block 907 will become smaller. The pressure plate 904, which is compressed by the limiting spring 906, will continue to compress the zinc block 907, thereby preventing the zinc block 907 from shaking randomly and avoiding impact damage.

[0037] Reference Appendix Figure 2-7The adjusting mechanism 10 includes an inner cavity 1001, a motor 1002, a cover plate 1003, an air pump 1004, an airbag 1005, and a suction pipe 1006. The bottom end of the float 1 has an inner cavity 1001. The inner wall of the inner cavity 1001 is rotatably connected to the cover plate 1003. The inner wall of the float 1 is fixedly connected to the motor 1002. The output end of the motor 1002 is fixedly connected to the cover plate 1003. The inner wall of the cover plate 1003 is fixedly connected to the airbag 1005. The port of the airbag 1005 is fixedly connected to the output end of the air pump 1004. The inner wall of the float 1 is fixedly connected to the air pump 1004. The input pipe of the air pump 1004 is fixedly connected to the suction pipe 1006. The outer wall of 1006 penetrates the outer wall of float 1. An electric valve is installed in the port of airbag 1005. The port of airbag 1005 penetrates the center of the bottom of cover plate 1003. A sealing ring is fitted between the port of airbag 1005 and cover plate 1003. The shape of cover plate 1003 and inner cavity 1001 is a broken cylindrical shape. The outer wall of air extraction pipe 1006 penetrates the top of guardrail 7. The air inlet of air extraction pipe 1006 faces the supporting steel plate 2. The end of air extraction pipe 1006 is U-shaped, so that there is a bend at the end of air extraction pipe 1006, which can prevent seawater from directly entering the air pump 1004 along air extraction pipe 1006. A counterweight balance block is installed on the outer wall of float 1.

[0038] Before the waves arrive, motor 1002 is started, driving cover plate 1003 to rotate one revolution. As cover plate 1003 rotates, a gap exists between it and the inner cavity 1001, allowing seawater to enter both the inner cavity 1001 and cover plate 1003. This fills the space between the inner cavity 1001 and cover plate 1003 with seawater. Sealing strips are installed on the outer walls of the inner cavity 1001 and cover plate 1003 to prevent seawater leakage, thereby increasing the mass of float 1. After the waves subside, cover plate 1003 is... When the opening of 003 is rotated downwards, the electric valve is opened, and the air pump 1004 is started, which inflates the air bag 1005. The air bag 1005 will fill the cover plate 1003. Then the electric valve is closed to allow the seawater to drain out. Then the cover plate 1003 is rotated to expel the water in the inner cavity 1001, thereby reducing the mass of the float 1 and ensuring the buoyancy of the supporting steel plate 2. The counterweight balance block is used to balance the uneven force on the float 1 and prevent one side of the float 1 from tilting up.

[0039] Working principle: The insert plate 5 on one support steel plate 2 is inserted into the slot 6 on another support steel plate 2 to fix the two support steel plates 2 together. The two support steel plates 2 are then fixed together by screws 4, thereby increasing the length of the floating bridge. When seawater impacts the baffle 805, the baffle 805 pushes the connecting plate 804 to move. The connecting plate 804 drives the slider 803 to move on the fixed plate 801. This guides the impact force of the seawater directly impacting the side wall of the float 1 to the upward movement of the slider 803, thus reducing the impact force. Simultaneously, the slider 803 compresses the buffer spring 806. Utilizing the physical properties of the buffer spring 806, the impact force is further reduced. To reduce impact force and achieve impact protection for float 1 and supporting steel plate 2, zinc block 907 is fixed to iron chain 908. Then, zinc block 907 is passed through top hole 903 and placed into inner groove 902. Under the elastic force of limit spring 906, limit spring 906 compresses pressure plate 904, causing pressure plate 904 and the inner wall of inner groove 902 to compress zinc block 907. Iron chain 908 connects zinc block 907 to supporting steel plate 2. After zinc block 907, iron chain 908, and supporting steel plate 2 are placed in seawater, a galvanic cell is formed. The zinc block 907's higher activity than supporting steel plate 2... The zinc block 907 is consumed preferentially due to its higher stability, thus preventing corrosion of the supporting steel plate 2. After the zinc block 907 is consumed, it will become smaller, and the pressure plate 904, which is compressed by the limiting spring 906, will continue to compress the zinc block 907, thereby preventing the zinc block 907 from shaking randomly and avoiding impact damage. Before the waves arrive, the motor 1002 is started, and the motor 1002 drives the cover plate 1003 to rotate one revolution. When the cover plate 1003 rotates, there is a gap between the cover plate 1003 and the inner cavity 1001, allowing seawater to enter the inner cavity 1001 and the cover plate 1003, thereby creating a gap between the inner cavity 1001 and the cover plate 1003. Seawater is filled in, and a sealing strip is provided on the inner cavity 1001 and the outer wall of the cover plate 1003 to prevent seawater leakage, thereby increasing the mass of the float 1. After the waves subside, the opening of the cover plate 1003 is rotated downwards, the electric valve is opened, and the air pump 1004 is started, so that the air pump 1004 inflates the air bag 1005. The air bag 1005 will fill the cover plate 1003, allowing the seawater to be discharged. Then the cover plate 1003 is rotated again, so that the water in the inner cavity 1001 is also squeezed out, thereby reducing the mass of the float 1, thus ensuring the supporting buoyancy of the supporting steel plate 2. The counterweight balance block is used to balance the uneven force on the float 1 and prevent one side of the float 1 from tilting up.

[0040] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A floating bridge structure for an inland river wharf, comprising a float (1), wherein a supporting steel plate (2) is fixedly connected to the upper end of the float (1), characterized in that, The outer wall of the supporting steel plate (2) is provided with multiple mounting holes (3), the inner wall of the mounting holes (3) is threaded with screws (4), one end of the supporting steel plate (2) is fixedly connected with a plug plate (5), the other end of the supporting steel plate (2) is provided with a slot (6), the top of the supporting steel plate (2) is fixedly connected with two symmetrically distributed guardrails (7), the outer wall of the float (1) is provided with a buffer mechanism (8), the buffer mechanism (8) is provided with a rust prevention mechanism (9), and the float (1) is provided with an adjustment mechanism (10). The adjustment mechanism (10) includes an inner cavity (1001), a motor (1002), a cover plate (1003), an air pump (1004), an airbag (1005), and an air extraction pipe (1006). The bottom end of the float (1) has an inner cavity (1001). The inner wall of the inner cavity (1001) is rotatably connected to the cover plate (1003). The inner wall of the float (1) is fixedly connected to the motor (1002). The output end of the motor (1002) is connected to the cover plate (1003). The cover plate (1003) is fixedly connected to an airbag (1005), the port of the airbag (1005) is fixedly connected to the output end of the air pump (1004), the inner wall of the float (1) is fixedly connected to the air pump (1004), the input pipe of the air pump (1004) is fixedly connected to the air extraction pipe (1006), the outer wall of the air extraction pipe (1006) penetrates the outer wall of the float (1), and an electric valve is provided in the port of the airbag (1005). The port of the airbag (1005) penetrates the center of the bottom of the cover plate (1003), and a sealing ring is fitted between the port of the airbag (1005) and the cover plate (1003). The cover plate (1003) and the inner cavity (1001) are both incomplete cylindrical shapes.

2. The floating bridge structure for an inland river terminal according to claim 1, characterized in that, The buffer mechanism (8) includes a fixed plate (801), a groove (802), a slider (803), a connecting plate (804), a baffle (805), and a buffer spring (806). The outer wall of the float (1) is fixedly connected to multiple fixed plates (801). The outer wall of the fixed plate (801) is provided with a groove (802). The inner wall of the groove (802) is slidably connected to two symmetrically distributed sliders (803). The outer wall of the slider (803) is fixedly connected to a connecting plate (804). The outer wall of the connecting plate (804) is rotatably connected to a baffle (805). The top and bottom of the groove (802) are both fixedly connected to one end of a buffer spring (806). The other end of the buffer spring (806) is fixedly connected to the slider (803).

3. The floating bridge structure for an inland river terminal according to claim 2, characterized in that, The rust prevention mechanism (9) includes a placement block (901), an inner groove (902), a top hole (903), a pressure plate (904), a guide rod (905), a limiting spring (906), a zinc block (907), and an iron chain (908). The placement block (901) is fixedly connected to the bottom of the outer wall of the baffle (805). The inner wall of the placement block (901) has an inner groove (902), and the upper end of the inner groove (902) has a top hole (903). A zinc block is placed on the inner wall of the inner groove (902). (907), the inner wall of the inner groove (902) is slidably connected to a pressure plate (904), the outer wall of the pressure plate (904) is fixedly connected to a guide rod (905), the outer surface of the pressure plate (904) is connected to one end of a limit spring (906), the other end of the limit spring (906) is fixedly connected to the inner wall of the inner groove (902), the top end of the zinc block (907) is fixedly connected to one end of an iron chain (908), and the other end of the iron chain (908) is fixedly connected to a supporting steel plate (2).

4. The floating bridge structure for an inland river terminal according to claim 2, characterized in that, The outer wall of the baffle (805) is fitted with a rubber sleeve.

5. The floating bridge structure for an inland river terminal according to claim 3, characterized in that, The bottom area of ​​the top hole (903) is smaller than the bottom area of ​​the inner groove (902), and the bottom end of the inner groove (902) is provided with a bottom hole (11).

6. The floating bridge structure for an inland river terminal according to claim 1, characterized in that, The outer wall of the exhaust pipe (1006) penetrates the top of the guardrail (7), the air inlet of the exhaust pipe (1006) faces the supporting steel plate (2), and the outer wall of the float (1) is provided with a counterweight balance block.

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