Water polo goal suspension device

Abstract

The invention discloses a water polo goal suspension device which comprises a door frame, a floating base is fixedly installed at the bottom of the door frame, a soft net is arranged on the rear side of the door frame, an adjusting cylinder is fixedly installed at the bottom of the floating base, and a balance weight base is fixedly installed at the top of the adjusting cylinder. A water inlet through hole communicating with the interior of the adjusting cylinder is formed in the middle of the balance weight base, and a balance weight block is arranged in the balance weight base. The balance weight base and the balance weight block are arranged, after the door frame is placed in water, the balance weight base and the balance weight block automatically sink to the bottom, the floating base and the door frame are driven to sink by a certain distance, the bottom of the door frame is flush with the water surface, and the balance weight block far lower than the bottom of the door frame enables the gravity center of the whole goal to move downwards. The lower center of gravity of the goal can enable the goal frame to be more stable, and the goal frame is prevented from swinging greatly, causing the goal to be in an unstable state and affecting the playing of athletes.

Description

Technical Field

[0001] The invention relates to the technical field of water polo goals, in particular to a water polo goal suspension device. Background Art

[0002] In the past, water polo goals were usually fixed in the swimming pool by fixing rods. The advantages are that the goal is accurately positioned, does not swing with the water waves, and has good stability; the disadvantages are that the installation and disassembly are complicated and the utilization rate of the swimming pool is low. At present, in areas where water sports are popular, people have designed a self-suspended water polo goal in order to improve the utilization rate of swimming pools and facilitate the placement and disassembly of water polo goals. The bottom support rod of the goal is set as a hollow buoy so that the goal can float on the water surface, and positioning ropes are set at the side and rear parts. After the water polo game is over, the goal can be moved quickly and in time, which improves the utilization rate of the swimming pool.

[0003] However, in actual use, due to the fierce competition among the athletes in the pool, the water splashes everywhere, and the large waves, the goal swings greatly vertically and horizontally. Since the water polo goal is small, this large swing makes the goal unstable, causing the athletes to have accidental and luck factors when shooting, that is, the swing may cause the ball that should go in to miss, but the ball that should not go in to go in. Summary of the invention

[0004] In view of the defects in the prior art, the present invention provides a water polo goal suspension device, comprising a door frame, a floating base is fixedly installed on the bottom of the door frame, a soft net is arranged on the rear side of the door frame, an adjusting cylinder is fixedly installed on the bottom of the floating base, a counterweight base is fixedly installed on the top of the adjusting cylinder, a water inlet through hole connected to the interior of the adjusting cylinder is opened in the middle of the counterweight base, a counterweight block is arranged inside the counterweight base, and the counterweight base and the counterweight block are arranged, and after the door frame is placed in water, they automatically sink to the bottom, and drive the floating base and the door frame to sink a certain distance, so that the bottom of the door frame is flush with the water surface, and the counterweight block far below the bottom of the door frame causes the center of gravity of the entire goal to move downward.

[0005] Preferably, the door frame is made of a hollow long tube, an air inlet hole is opened at the top of the interior of the door frame, a connecting hole is opened at the bottom of the rear side of the interior of the door frame, an air duct is fixedly installed outside the connecting hole, and the other end of the air duct is fixedly installed to the top of the two sides of the adjusting cylinder through a conduit. At the same time, the door frame is used as a conduit, and air is added to the inside of the adjusting cylinder through the air duct and the connecting conduit, and the air inside the adjusting cylinder is discharged conveniently.

[0006] Preferably, a connecting duct is fixedly installed on the top of the two adjusting cylinders on the same side of the floating base, and both ends of the connecting duct are respectively fixedly installed on the two adjusting cylinders on the same side of the floating base, and the air guide pipe and the connecting duct are fixedly installed on the bottom of the floating base.

[0007] Preferably, a hollow floating cavity is provided inside the floating base, the top of the floating base is rotatably connected to a rotating shaft located on both sides of the door frame, the interior of the floating cavity is sealingly and slidably connected to a lifting plate, the interior of the floating cavity is rotatably connected to a threaded rod, the threaded rod is threadedly connected to the middle part of the lifting plate, and the lifting plate is driven up and down by the rotation of the threaded rod, thereby adjusting the different heights of the floating cavity on the upper and lower sides of the lifting plate.

[0008] Preferably, a second bevel gear located above the floating base is fixedly mounted on the top of the threaded rod, a first bevel gear is fixedly mounted on the outer circumferential surface of the rotating shaft, the first bevel gear is meshed with the second bevel gear, a crank located on the rear side of the floating base is fixedly mounted on one end of the rotating shaft, the first bevel gear is meshed with the second bevel gear, so that the rotating shaft and the threaded rod rotate synchronously, and the threaded rod is sealed and rotationally connected to the top of the floating base.

[0009] Preferably, the top of the floating base is rotatably connected to a transmission rod located on the rear side of the door frame, and fourth bevel gears are fixedly installed at both ends of the transmission rod. A third bevel gear close to the crank is fixedly installed on the outer peripheral surface of the rotating shaft, and the fourth bevel gear is meshed with the third bevel gear. By turning the hand wheel, the rotating shaft on one side rotates, and the rotating shaft on the other side is driven to rotate synchronously through the transmission rod, so that the threaded rod inside the floating chamber rotates synchronously, so that the lifting plate rises or falls.

[0010] Preferably, the internal sealing sliding connection of the regulating cylinder is connected to a piston plate, an airbag is fixedly installed on the top of the piston plate, the top of the airbag and the top of the floating base are fixedly installed through a bracket, a connecting pipe is provided on the top of the airbag, the top of the connecting pipe passes through the bottom of the floating base and is connected with the floating chamber, and a control valve is provided in the middle of the connecting pipe.

[0011] Preferably, a circular through groove is provided at the bottom of the adjusting cylinder, a circular groove is provided in the middle of the piston plate, the diameter of the circular groove of the piston plate is the same as the diameter of the circular through groove, and the bottom of the airbag is fixedly mounted to the bottom inside the circular groove.

[0012] Preferably, a guide slide bar is fixedly installed inside the adjusting cylinder, the guide slide bar is evenly distributed around the circular groove, and the guide slide bar is sealingly penetrated and slidably connected with the piston plate.

[0013] Preferably, the top of the floating base is connected to the bottom of the door frame, and a protective cover wrapped around the outside of the transmission rod and the rotating shaft is fixedly installed on the top of the floating base. The protective cover can protect the transmission rod and the rotating shaft to prevent athletes from damaging the transmission rod and the rotating shaft during intense exercise.

[0014] The beneficial effects of the present invention are embodied in:

[0015] 1. A water polo goal suspension device is provided, by arranging a floating base, so that the floating base can support the door frame to float on the water surface, and the counterweight base and the counterweight block are arranged at the same time, and then the door frame is placed in the water, and it automatically sinks to the bottom, and drives the floating base and the door frame to sink a certain distance, so that the bottom of the door frame is flush with the water surface, and the counterweight block far below the bottom of the door frame makes the center of gravity of the entire goal move downward, when the water surface is in intense motion of athletes and the waves are large, the lower center of gravity of the goal can make the door frame more stable, and prevent the door frame from swinging greatly, causing the goal to be in an unstable state and affecting the performance of athletes.

[0016] 2. This water polo goal suspension device is provided with an adjusting cylinder and an air bag. After the door frame is placed in the water, when the bottom of the door frame is not flush with the water surface, the crank is turned to rotate the rotating shaft on one side, and at the same time, the rotating shaft on the other side is driven to rotate synchronously through the transmission rod, so that the threaded rod inside the floating chamber rotates synchronously, so that the lifting plate rises or falls, and then the air stock inside the air bag is controlled through the connecting pipe, so that the air bag shortens or lengthens under the action of air pressure, and then drives the piston plate to move, and adjusts the height of the piston plate inside the adjusting cylinder to adjust the air content inside the adjusting cylinder, so that the buoyancy of the adjusting cylinder and the floating base is adjusted, so that the bottom of the door frame is flush with the water surface.

[0017] 3. The water polo goal suspension device, by setting a longer adjustment tube, makes the height of the counterweight block much lower than the bottom of the floating base, further lowers the height of the center of gravity of the entire goal, and at the same time, when the piston plate rises, the water inlet hole provided in the counterweight base allows the external clean water to enter the adjusting tube through the water inlet hole to offset the buoyancy. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for the specific embodiments or the description of the prior art. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn according to the actual scale.

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 It is a structural schematic diagram of the door frame of the present invention;

[0021] Figure 3 It is a schematic diagram of the structure of the airway tube of the present invention;

[0022] Figure 4 It is a schematic diagram of the partial structure of the floating base of the present invention;

[0023] Figure 5 For the present invention Figure 5 Enlarged view of point A in the middle;

[0024] Figure 6 It is a structural schematic diagram of the regulating cylinder of the present invention;

[0025] Figure 7 For the present invention Figure 6 Enlarged view of point B in the middle;

[0026] Figure 8 For the present invention Figure 6 Enlarged view of center C.

[0027] In the attached drawings: 1. door frame; 2. soft net; 3. air inlet; 4. connecting hole; 5. floating base; 6. adjusting cylinder; 7. counterweight base; 8. water inlet hole; 9. counterweight block; 10. floating chamber; 11. rotating shaft; 12. threaded rod; 13. transmission rod; 14. crank; 15. lifting plate; 16. piston plate; 17. air bag; 18. connecting pipe; 19. control valve; 20. air guide pipe; 21. connecting duct; 22. protective cover; 23. first bevel gear; 24. second bevel gear; 25. third bevel gear; 26. fourth bevel gear; 27. guide slide rod. DETAILED DESCRIPTION

[0028] The following embodiments of the technical solution of the present invention are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and are therefore only used as examples, and cannot be used to limit the protection scope of the present invention.

[0029] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application should have the common meanings understood by those skilled in the art to which the present invention belongs.

[0030] like Figures 1 to 8 As shown, it includes a door frame 1, a floating base 5 is fixedly installed on the bottom of the door frame 1, a soft net 2 is arranged on the rear side of the door frame 1, an adjusting cylinder 6 is fixedly installed on the bottom of the floating base 5, a counterweight base 7 is fixedly installed on the top of the adjusting cylinder 6, a water inlet through hole 8 connected to the inside of the adjusting cylinder 6 is opened in the middle of the counterweight base 7, a counterweight block 9 is arranged inside the counterweight base 7, and the counterweight base 7 and the counterweight block 9 are arranged, and after the door frame 1 is placed in the water, they automatically sink to the bottom, and drive the floating base 5 and the door frame 1 to sink a certain distance, so that the bottom of the door frame 1 is flush with the water surface, and the counterweight block 9 far below the bottom of the door frame 1 causes the center of gravity of the entire goal to move downward.

[0031] As an embodiment of the present invention, the door frame 1 is made of a hollow long tube, an air inlet hole 3 is opened at the top inside the door frame 1, a connecting hole 4 is opened at the bottom of the rear side inside the door frame 1, an air guide tube 20 is fixedly installed outside the connecting hole 4, and the other end of the air guide tube 20 is fixedly installed to the top of the sides of two adjusting cylinders 6 through a conduit. The hollow door frame 1 can reduce its own weight, and at the same time, the door frame 1 is used as a conduit, and air is added to the inside of the adjusting cylinder 6 through the air guide tube 20 and the connecting conduit, and the air inside the adjusting cylinder 6 is conveniently discharged.

[0032] As an embodiment of the present invention, a connecting duct 21 is fixedly installed on the top of the two adjusting cylinders 6 on the same side of the floating base 5, and the two ends of the connecting duct 21 are respectively fixedly installed on the two adjusting cylinders 6 on the same side of the floating base 5, and the air guide tube 20 and the connecting duct 21 are fixedly installed on the bottom of the floating base 5. By setting the floating base 5, the floating base 5 can support the door frame 1 to float on the water surface. At the same time, the counterweight base 7 and the counterweight block 9 are set. After the door frame 1 is placed in the water, it automatically sinks to the bottom, and drives the floating base 5 and the door frame 1 to sink a certain distance, so that the bottom of the door frame 1 is flush with the water surface, and the counterweight block 9 far below the bottom of the door frame 1 makes the center of gravity of the entire goal move downward. When the water surface is in intense motion with athletes and large waves, the lower center of gravity of the goal can make the door frame 1 more stable, preventing the door frame 1 from swinging significantly, causing the goal to be in an unstable state and affecting the performance of athletes.

[0033] As an embodiment of the present invention, a hollow floating chamber 10 is opened inside the floating base 5, and the top of the floating base 5 is rotatably connected to the rotating shaft 11 located on both sides of the door frame 1, and the internal sealing sliding connection of the floating chamber 10 is connected to the lifting plate 15, and the internal rotatable connection of the floating chamber 10 is connected to the threaded rod 12, and the threaded rod 12 is threadedly connected to the middle part of the lifting plate 15, and the lifting plate 15 is driven up and down by the rotation of the threaded rod 12, thereby adjusting the different heights of the floating chamber 10 on the upper and lower sides of the lifting plate 15.

[0034] As an embodiment of the present invention, a second bevel gear 24 located above the floating base 5 is fixedly installed on the top of the threaded rod 12, a first bevel gear 23 is fixedly installed on the outer peripheral surface of the rotating shaft 11, the first bevel gear 23 is meshed with the second bevel gear 24, and a crank 14 located on the rear side of the floating base 5 is fixedly installed at one end of the rotating shaft 11, and the first bevel gear 23 is meshed with the second bevel gear 24, so that the rotating shaft 11 and the threaded rod 12 rotate synchronously, and the threaded rod 12 is sealed and rotatably connected to the top of the floating base 5.

[0035] As an embodiment of the present invention, the top of the floating base 5 is rotatably connected to a transmission rod 13 located on the rear side of the door frame 1, and fourth bevel gears 26 are fixedly installed at both ends of the transmission rod 13. A third bevel gear 25 close to the crank 14 is fixedly installed on the outer peripheral surface of the rotating shaft 11. The fourth bevel gear 26 is meshed with the third bevel gear 25. The crank 14 is rotated to rotate the rotating shaft 11 on one side, and the rotating shaft 11 on the other side is driven to rotate synchronously through the transmission rod 13, so that the threaded rod 12 inside the floating chamber 10 rotates synchronously, so that the lifting plate 15 rises or falls.

[0036] As an embodiment of the present invention, the inner sealing sliding connection of the regulating cylinder 6 is connected with a piston plate 16, the top of the piston plate 16 is fixedly installed with an airbag 17, the top of the airbag 17 is fixedly installed with the top of the floating base 5 through a bracket, and a connecting pipe 18 is arranged on the top of the airbag 17. The top of the connecting pipe 18 passes through the bottom of the floating base 5 and is connected with the floating chamber 10. A control valve 19 is arranged in the middle of the connecting pipe 18. By arranging the regulating cylinder 6 and the airbag 17, when the door frame 1 is placed in the water, when the bottom of the door frame 1 is not flush with the water surface, the crank 14 is turned so that the rotating shaft 11 on one side The door frame 1 rotates, and at the same time, the transmission rod 13 drives the rotating shaft 11 on the other side to rotate synchronously, so that the threaded rod 12 inside the floating chamber 10 rotates synchronously, so that the lifting plate 15 rises or falls, and then the air stock inside the airbag 17 is controlled through the connecting pipe 18, so that the airbag 17 is shortened or extended under the action of air pressure, thereby driving the piston plate 16 to move, and adjusting the height of the piston plate 16 inside the adjusting cylinder 6 to adjust the air content inside the adjusting cylinder 6, so that the buoyancy of the adjusting cylinder 6 and the floating base 5 is adjusted, so that the bottom of the door frame 1 is flush with the water surface.

[0037] As an embodiment of the present invention, a circular through groove is opened at the bottom of the adjusting cylinder 6, and a circular groove is arranged in the middle of the piston plate 16. The diameter of the circular groove of the piston plate 16 is the same as the diameter of the circular through groove, and the bottom of the airbag 17 is fixedly installed with the bottom of the circular groove.

[0038] As an embodiment of the present invention, a guide slide rod 27 is fixedly installed inside the adjusting cylinder 6, and the guide slide rod 27 is evenly distributed around the circular groove. The guide slide rod 27 is sealed and slidably connected with the piston plate 16. By setting a longer adjusting cylinder 6, the height of the counterweight block 9 is much lower than the bottom of the floating base 5, further reducing the height of the center of gravity of the entire goal. At the same time, when the piston plate 16 rises, the water inlet hole 8 opened in the counterweight base 7 allows clean water from the outside to enter the adjusting cylinder 6 through the water inlet hole to offset the buoyancy.

[0039] As an embodiment of the present invention, the top of the floating base 5 is connected to the bottom of the door frame 1, and a protective cover 22 wrapped around the outside of the transmission rod 13 and the rotating shaft 11 is fixedly installed on the top of the floating base 5. The protective cover can protect the transmission rod 13 and the rotating shaft 11 to prevent athletes from damaging the transmission rod 13 and the rotating shaft 11 during intense exercise.

[0040] It should be noted that when in use, after placing the door frame 1 in water, when the bottom of the door frame 1 is not flush with the water surface, the hand wheel is turned to rotate the rotating shaft 11 on one side, and at the same time, the rotating shaft 11 on the other side is driven to rotate synchronously through the transmission rod 13, so that the threaded rod 12 inside the floating chamber 10 rotates synchronously, so that the lifting plate 15 rises or falls, and then the air stock inside the airbag 17 is controlled through the connecting pipe 18, so that the airbag 17 shortens or lengthens under the action of air pressure, and then drives the piston plate 16 to move, and adjusts the height of the piston plate 16 inside the adjusting cylinder 6 to adjust the air content inside the adjusting cylinder 6, so that the buoyancy of the adjusting cylinder 6 and the floating base 5 is adjusted, so that the bottom of the door frame 1 is flush with the water surface, and the floating base 5 supports the door frame 1 to float on the water surface. The counterweight base 7 and the counterweight block 9 are set at the same time. After the door frame 1 is placed in the water, it automatically sinks to the bottom, and drives the floating base 5 and the door frame 1 to sink a certain distance, so that the bottom of the door frame 1 is flush with the water surface, and the counterweight block 9 far below the bottom of the door frame 1 makes the center of gravity of the entire goal move downward. By setting a longer adjusting cylinder 6, the height of the counterweight block 9 is far lower than the bottom of the floating base 5, further reducing the height of the center of gravity of the entire goal. At the same time, when the piston plate 16 rises, the water inlet hole 8 opened in the counterweight base 7 allows external clean water to enter the inside of the adjusting cylinder 6 through the water inlet hole to offset the buoyancy. When the water surface is in intense motion with athletes and large waves, the lower center of gravity of the goal can make the door frame 1 more stable, prevent the door frame 1 from swinging significantly, causing the goal to be in an unstable state and affecting the performance of athletes.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and specification of the present invention.

Claims

1. A water polo goal suspension device, comprising a door frame (1), characterized in that: A floating base (5) is fixedly mounted on the bottom of the door frame (1), a soft net (2) is arranged on the rear side of the door frame (1), an adjusting cylinder (6) is fixedly mounted on the bottom of the floating base (5), a counterweight base (7) is fixedly mounted on the top of the adjusting cylinder (6), a water inlet through hole (8) connected to the inside of the adjusting cylinder (6) is opened in the middle of the counterweight base (7), and a counterweight block (9) is arranged inside the counterweight base (7).

2. A water polo goal suspension device according to claim 1, characterized in that: The door frame (1) is made of a hollow long tube, an air inlet hole (3) is provided at the top of the interior of the door frame (1), a connecting hole (4) is provided at the bottom of the rear side of the interior of the door frame (1), an air guide tube (20) is fixedly installed outside the connecting hole (4), and the other end of the air guide tube (20) is fixedly installed at the top of the side of two adjustment cylinders (6) through a conduit.

3. A water polo goal suspension device according to claim 2, characterized in that: A connecting duct (21) is fixedly mounted on the top of the two adjusting cylinders (6) on the same side of the floating base (5); two ends of the connecting duct (21) are respectively fixedly mounted on the two adjusting cylinders (6) on the same side of the floating base (5); and the air guide pipe (20) and the connecting duct (21) are fixedly mounted on the bottom of the floating base (5).

4. A water polo goal suspension device according to claim 1, characterized in that: A hollow floating chamber (10) is provided inside the floating base (5); the top of the floating base (5) is rotatably connected to a rotating shaft (11) located on both sides of the door frame (1); the inside of the floating chamber (10) is sealed and slidably connected to a lifting plate (15); the inside of the floating chamber (10) is rotatably connected to a threaded rod (12); the threaded rod (12) is threadedly connected to the middle of the lifting plate (15).

5. A water polo goal suspension device according to claim 4, characterized in that: A second bevel gear (24) located above the floating base (5) is fixedly mounted on the top of the threaded rod (12); a first bevel gear (23) is fixedly mounted on the outer peripheral surface of the rotating shaft (11); the first bevel gear (23) is meshed with the second bevel gear (24); and a crank (14) located at the rear side of the floating base (5) is fixedly mounted on one end of the rotating shaft (11).

6. A water polo goal suspension device according to claim 5, characterized in that: The top of the floating base (5) is rotatably connected to a transmission rod (13) located at the rear side of the door frame (1), and fourth bevel gears (26) are fixedly mounted on both ends of the transmission rod (13). A third bevel gear (25) close to the crank (14) is fixedly mounted on the outer peripheral surface of the rotating shaft (11), and the fourth bevel gear (26) is meshed with the third bevel gear (25).

7. A water polo goal suspension device according to claim 4, characterized in that: The regulating cylinder (6) is sealed and slidably connected to a piston plate (16) inside, an air bag (17) is fixedly mounted on the top of the piston plate (16), the top of the air bag (17) is fixedly mounted on the top of the floating base (5) via a bracket, a connecting pipe (18) is arranged on the top of the air bag (17), the top of the connecting pipe (18) passes through the bottom of the floating base (5) and is connected to the floating chamber (10), and a control valve (19) is arranged in the middle of the connecting pipe (18).

8. A water polo goal suspension device according to claim 7, characterized in that: A circular through groove is formed at the bottom of the regulating cylinder (6), a circular groove is formed in the middle of the piston plate (16), the diameter of the circular groove of the piston plate (16) is the same as the diameter of the circular through groove, and the bottom of the airbag (17) is fixedly mounted to the bottom of the circular groove.

9. A water polo goal suspension device according to claim 7, characterized in that: A guide slide bar (27) is fixedly installed inside the regulating cylinder (6). The guide slide bar (27) is evenly distributed around the circular groove. The guide slide bar (27) is sealed and penetrated by the piston plate (16) for sliding connection.

10. A water polo goal suspension device according to claim 6, characterized in that: The top of the floating base (5) is connected to the bottom of the door frame (1), and a protective cover (22) wrapped around the transmission rod (13) and the rotating shaft (11) is fixedly installed on the top of the floating base (5).

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