A gravity-driven gate

Abstract

The application discloses a gravity-driven gate and relates to the technical field of gates, which comprises a cement installation foundation with a liquid inlet opening and a liquid outlet opening, a top plate is arranged at the upper end of the cement installation foundation, an installation part is arranged in the inner cavity of the cement installation foundation, a gate plate is movably installed on the installation part, a lifting rod is installed at the upper end of the gate plate, a gravity driving unit is further arranged, the lifting rod is driven to move up and down by the change of the gravity of the human body acting on the equipment, and the gate plate is further driven to open and close. Compared with a manual gate, the gate is driven to open and close by the gravity of the human body, the operation mode is simple and convenient, and the gate is not labor-consuming.

Description

Technical Field

[0001] This invention relates to the field of gate technology, and in particular to a gravity-driven gate. Background Technology

[0002] A sluice gate is a control facility used to close and open a water discharge channel, and is an important component of hydraulic structures. Sluice gates are widely used in water conservancy projects, primarily to control the water level of rivers, canals, reservoirs, and other bodies of water, regulate water flow to maintain water supply and protect the surrounding environment. They play a vital role in urban drainage, farmland irrigation, and hydroelectric power generation.

[0003] Gates are classified into electric gates and manual gates based on their drive systems. Manual gates have several advantages. First, they do not require an external power source or other power equipment, so they can be used in remote areas or places with inconvenient power supply. Second, manual gates have a simple structure, are easy to maintain and service, and reduce operating costs, making them widely used.

[0004] Existing manual gates require manual operation by turning a handwheel to move larger gate plates, which is laborious to adjust. Therefore, this application provides a gravity-driven gate to meet the requirements. Summary of the Invention

[0005] The purpose of this application is to provide a gravity-driven gate to solve the technical problem of laborious manual gate adjustment in the prior art.

[0006] To achieve the above objectives, this application provides the following technical solution: a gravity-driven gate, comprising a cement mounting base with an inlet opening and an outlet opening, a top plate at the upper end of the cement mounting base, an installation part in the inner cavity of the cement mounting base, a gate plate movably mounted on the installation part, a lifting rod mounted on the upper end of the gate plate, and a gravity-driven unit that uses the change in gravity exerted by a human body on the equipment to drive the lifting rod to move up and down, thereby driving the gate plate to open and close.

[0007] As a preferred embodiment of this invention, the gravity drive unit includes two gear carriers, a gear column, a column, a base plate, and a weight-adding block;

[0008] The gears on the gear carrier respectively mesh with the drive teeth arranged in a straight line on the gear column and the lifting rod;

[0009] The upper ends of the lifting rod and the toothed column both slide through the top plate, and the lower end of the toothed column is fixedly connected to the upper end of the weight-adding block.

[0010] One end of the seat plate is fixed to the toothed column, and a cross bar is fixed to the other end of the seat plate. The cross bar is slidably engaged in a vertical slot provided on the column.

[0011] The column and the two gear frames are both installed on the upper end of the top plate;

[0012] The sum of the weights of the weight-adding block, the toothed column, and the seat plate is less than the sum of the weights of the gate and the lifting rod.

[0013] As a preferred embodiment of this invention, a deceleration unit is also included to slow down the movement speed of the gate and the weight block.

[0014] In a preferred embodiment of this invention, the mitigation unit includes multiple square uprights fixed to the lower end of the top plate. Each of the four sides of the square uprights is provided with multiple first magnets in a straight line. The lower end of each square upright slides through the weight-adding block, and a buffer spring is installed at the lower end of each square upright.

[0015] As a preferred embodiment of this invention, it further includes a plurality of magnetic shields with open lower ends fixedly disposed at the lower end of the top plate, and a second magnet is installed in the inner cavity of the magnetic shield.

[0016] As a preferred embodiment of this invention, a magnetic weakening unit is also included, which can automatically weaken the magnetic attraction of the second magnet to the weight block before the weight block moves downward.

[0017] As a preferred embodiment of this example, the magnetic weakening unit includes a magnetic shielding plate, two opposing limiting strips, a movable toothed plate, a drive gear, a movable plate, and a cylinder with a base plate.

[0018] The magnetic shielding plate slides through the magnetic shielding cover;

[0019] Both of the limiting strips are fixedly installed on the outer wall of the magnetic shield, and the drive gear is installed at the lower end of the limiting strip and meshes with the drive teeth provided at the upper end of the magnetic shield.

[0020] The movable toothed plate is slidably disposed between the two limiting strips and meshes with the drive gear. The upper end of the movable toothed plate is fixedly connected to the magnetic shielding cover by a connecting spring. The movable toothed plate is connected to the bottom plate by a first pull rope. An extension spring is provided between the bottom plate and the top plate.

[0021] The cylinder is located at the upper end of the top plate and slides through the cross rod. The upper end of the cylinder and the through hole of the cross rod are respectively provided with a first elastic compression ring and a second elastic compression ring. The cylinder is located at the lower part of the top plate and is fixedly sleeved with a blocking ring.

[0022] The lower end of the movable plate is fixed with a first spring, and the lower end of the first spring is fixed in the mounting groove provided on the upper end of the base plate.

[0023] As a preferred embodiment of this invention, an automatic reset unit is also included. When the seat plate descends to the point where the gate is fully open, the position of the seat plate can be locked. After the water is drained, the lock is automatically released, and the seat plate returns to its original position under the gravity of the gate and the lifting rod.

[0024] In a preferred embodiment of this invention, the automatic reset unit includes a mounting bracket installed on the column, a second spring fixed on the mounting bracket, one end of the second spring being fixedly connected to a positioning rod, the positioning rod slidingly penetrating the mounting bracket, the upper end face of the positioning end of the positioning rod being set as an inclined surface, a second pull rope fixed to one end of the positioning rod, and one end of the second pull rope being connected to a floating plate in the inner cavity of the cement installation foundation, the floating plate being slidably penetrating by a limiting column, the limiting column being installed in the inner cavity of the cement installation foundation;

[0025] The end of the cross bar is provided with a positioning slot that is adapted to the positioning rod.

[0026] In summary, the technical effects and advantages of this invention are as follows:

[0027] 1. The present invention has a reasonable structure. Compared with manual gates, this gate uses human weight to drive the gate to open and close. This operation method is simple, convenient and labor-saving.

[0028] 2. In this invention, a deceleration unit is also provided to slow down the movement speed of the gate and the weight block to avoid collision damage;

[0029] 3. In this invention, a second magnet is also provided, which exerts a large pulling force on the weight-adding block, thereby greatly reducing the upward pulling force on the lifting rod. This allows the bottom surface of the U-shaped mounting frame at the lower end of the gate to be sealed more tightly under its own weight, preventing leakage.

[0030] 4. In this invention, a magnetic weakening unit is also provided, which can automatically weaken the magnetic attraction of the second magnet on the weight block before the weight block moves downward, which is beneficial for the subsequent downward movement of the weight block by the action of human gravity.

[0031] 5. In this invention, an automatic reset unit is also provided. When the seat plate descends to the point where the gate is fully open, the position of the seat plate can be locked. After the water is discharged, the lock is automatically released, and the seat plate returns to its original position by the gravity of the gate and the lifting rod, without the need for manual operation. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0033] Figure 1 This is a front view of the installation structure of the present invention;

[0034] Figure 2 for Figure 1 A magnified schematic diagram of the central part of the structure;

[0035] Figure 3 for Figure 2 Schematic diagram of the three-dimensional structure of the medium gravity drive unit;

[0036] Figure 4 for Figure 2 Schematic diagram of the central weight-increasing block and square upright structure;

[0037] Figure 5 for Figure 4 Schematic diagram of the structure of the middle weighting block from below;

[0038] Figure 6 for Figure 4 Schematic diagram of the central magnetic shield structure;

[0039] Figure 7 for Figure 6 A schematic diagram of the central magnetic shield structure viewed from below;

[0040] Figure 8 for Figure 2 Schematic diagram of the central cylindrical structure;

[0041] Figure 9 for Figure 3 Schematic diagram of the middle seat plate and its enlarged portion;

[0042] Figure 10 for Figure 3 Schematic diagram of the central column from the side;

[0043] Figure 11 for Figure 3 Schematic diagram of the mounting frame structure.

[0044] In the diagram: 1. Cement installation foundation; 2. Installation section; 3. Gate plate; 4. Lifting rod; 5. Top plate; 6. Gear frame; 7. Gear column; 8. Weighting block; 9. Column; 10. Seat plate; 11. Square upright; 12. First magnet; 13. Blocking ring; 14. Buffer spring; 15. Magnetic shield; 16. Second magnet; 17. Magnetic shield; 18. Limiting strip; 19. Movable gear plate; 20. Connecting spring; 21. Cylinder; 22. First elastic compression ring; 23. Base plate; 24. Extension spring; 25. Second elastic compression ring; 26. Positioning slot; 27. Movable plate; 28. First spring; 29. ​​Mounting bracket; 30. Positioning rod; 31. Second spring; 32. Inclined surface; 33. Second pull rope; 34. First pull rope; 35. Floating plate; 36. Limiting column; 37. Drive gear. Detailed Implementation

[0045] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0046] Example: Reference Figure 1 The gravity-driven gate shown includes a cement mounting base 1 with an inlet and an outlet. A top plate 5 is provided on the upper end of the cement mounting base 1. An installation part 2 is provided in the inner cavity of the cement mounting base 1. A gate plate 3 is movably installed on the installation part 2. A lifting rod 4 is installed on the upper end of the gate plate 3. The gate also includes a gravity drive unit that uses the change in gravity exerted by the human body on the equipment to drive the lifting rod 4 to move up and down, thereby driving the gate plate 3 to open and close.

[0047] As a preferred embodiment of this example, Figure 1-3 As shown, the gravity drive unit includes two gear carriers 6, a gear column 7, a column 9, a base plate 10, and a weight-adding block 8;

[0048] The gears on the gear carrier 6 respectively mesh with the drive teeth arranged in a straight line on the gear column 7 and the lifting rod 4;

[0049] The upper ends of the lifting rod 4 and the toothed column 7 slide through the top plate 5, and the lower end of the toothed column 7 is fixedly connected to the upper end of the weight-adding block 8.

[0050] One end of the seat plate 10 is fixed to the toothed column 7, and a cross rod is fixed to the other end of the seat plate 10. The cross rod is slidably engaged in the vertical slot provided on the column 9.

[0051] The column 9 and the two gear racks 6 are all installed on the upper end of the top plate 5;

[0052] The sum of the weights of the weight-adding block 8, the toothed column 7, and the seat plate 10 is less than the sum of the weights of the gate plate 3 and the lifting rod 4.

[0053] In use, the operator can sit directly on the seat plate 10. The sum of the weight of the operator, the weight block 8, the gear column 7, and the seat plate 10 is greater than the sum of the weight of the gate plate 3 and the lifting rod 4. With the help of the gear frame 6, when the seat plate 10 drives the gear column 7 to move downward, the lifting rod 4 will drive the gate plate 3 to move upward, thus making the gate plate 3 open and closed. When the gate plate 3 is fully open and closed, the cross rod is blocked by the bottom of the vertical slot and cannot continue to move downward. At this time, the operator can sit on the seat plate 10. Compared with manual operation, sitting directly on the seat plate 10 and using the weight of the operator to open the gate plate 3 is simple, convenient, and effortless. After the drainage is completed, the operator can stand up. At this time, the operator's weight is no longer acting on the seat plate 10. At this time, the weight block 8 is driven upward and returned to its original position by the weight of the gate plate 3 and the lifting rod 4.

[0054] It should be noted that: first, an elastic buffer layer is provided on the outer wall of the weight-increasing block 8 to buffer the collision between the weight-increasing block 8 and the top plate 5; second, it is not necessary for a person to sit on the seat plate 10, it is also acceptable to place their feet on the seat plate 10.

[0055] As a preferred embodiment of this example, Figure 3 As shown, it also includes a deceleration unit to slow down the movement speed of the gate 3 and the weight block 8.

[0056] When the gate 3 moves downward, its weight block 8 moves upward. Both the gate 3 and the weight block 8 accelerate (or when the gate 3 moves upward, its weight block 8 moves downward, and both the gate 3 and the weight block 8 accelerate). This acceleration will cause the weight block 8 to collide violently with the top plate 5, which may easily damage the top plate 5. At the same time, it will also cause the bottom of the gate 3 to collide violently with the cement installation foundation 1, affecting the service life of the gate equipment. Therefore, a damping unit is set to slow down the movement of the gate 3 and the weight block 8.

[0057] It should be noted that when the operator is seated on the seat 10, an excessively fast descent speed of the seat 10 can easily cause discomfort, instability, and a large recoil force.

[0058] As a preferred embodiment of this example, Figure 3 As shown, the mitigation unit includes multiple square uprights 11 fixed to the lower end of the top plate 5. Multiple first magnets 12 are arranged in a straight line on the four sides of the square uprights 11. The lower end of each square upright 11 slides through the weight-increasing block 8. A buffer spring 14 is installed at the lower end of each square upright 11.

[0059] When the weight block 8 moves upward or downward, the magnetic force generated by the first magnet 12 on the weight block 8 can create resistance to the upward or downward movement of the weight block 8, thus hindering the upward or downward movement of the weight block 8 and the rapid increase in the speed of the weight block 8 and the gate 3, thereby weakening the collision intensity of the gate 3 and the weight block 8.

[0060] A buffer spring 14 is provided to buffer the weight block 8.

[0061] It should be noted that: first, each first magnet 12 is provided with a corresponding protective cover, which has the function of magnetic shielding; second, the lower end of each square upright 11 is fixed with a bearing plate, and the buffer spring 14 is installed on the bearing plate; third, the weight-adding block 8 is made of iron alloy material.

[0062] As a preferred embodiment of this example, Figure 4 , Figure 6 and Figure 7 As shown, it also includes a plurality of magnetic shielding covers 15 with openings at the lower end, which are fixedly installed at the lower end of the top plate 5. The inner cavity of the magnetic shielding cover 15 is equipped with a second magnet 16.

[0063] When the weight block 8 moves upward at low speed and eventually the lower end of the magnetic shield 15 contacts the upper end of the weight block 8, the second magnet 16 forms a magnetic attraction to the weight block 8 made of iron alloy material, that is, it exerts a large pulling force on the weight block 8. This greatly reduces the upward pulling force on the lifting rod 4, and makes the lower end of the gate plate 3 seal more tightly with the bottom surface of the U-shaped mounting frame (which is mounted on 2 and is adapted to slide with the gate plate 3) by its own gravity, thus avoiding leakage.

[0064] It should be noted that the strength of the second magnet 16 can be selected as needed. A strong magnet can make the lifting rod 4 exert a downward force on the gate 3, further making the lower end of the gate 3 more tightly sealed to the bottom surface of the U-shaped mounting frame.

[0065] As a preferred embodiment of this invention, a magnetic weakening unit is also included, which can automatically weaken the magnetic attraction of the second magnet 16 to the weight block 8 before the weight block 8 moves downward.

[0066] Because of the presence of the second magnet 16, in order to prevent the second magnet 16 from generating too large a magnetic attraction force on the weight block 8, which would prevent the weight block 8 from moving downwards by gravity even when the operator is sitting on the seat plate 10, a magnetic weakening unit is set up. Before the weight block 8 moves downwards, the magnetic attraction force between the second magnet 16 and the weight block 8 can be automatically weakened, which is beneficial for the subsequent downward movement of the weight block 8 by the operator's gravity.

[0067] As a preferred embodiment of this example, Figure 2-9 As shown, the magnetic weakening unit includes a magnetic shielding plate 17, two opposing limiting strips 18, a movable toothed plate 19, a drive gear 37, a movable plate 27, and a cylinder 21 with a base plate 23.

[0068] The magnetic shielding plate 17 slides through the magnetic shielding cover 15;

[0069] Both limiting strips 18 are fixedly installed on the outer wall of the magnetic shield 15, and the drive gear 37 is installed at the lower end of the limiting strip 18 and meshes with the drive gear provided at the upper end of the magnetic shield 17.

[0070] The movable toothed plate 19 is slidably disposed between the two limit bars 18 and drives the gear 37 to mesh. The upper end of the movable toothed plate 19 is fixedly connected to the magnetic shield 15 through the connecting spring 20. The movable toothed plate 19 is connected to the bottom plate 23 through the first pull rope 34. An extension spring 24 is provided between the bottom plate 23 and the top plate 5.

[0071] The cylinder 21 is located at the upper end of the top plate 5 and slides through the cross rod. The upper end of the cylinder 21 and the through hole of the cross rod are respectively provided with a first elastic compression ring 22 and a second elastic compression ring 25. The cylinder 21 is located at the lower part of the top plate 5 and is fixedly sleeved with a blocking ring 13.

[0072] The lower end of the movable plate 27 is fixed with a first spring 28, and the lower end of the first spring 28 is fixed in the mounting groove provided on the upper end of the base plate 10.

[0073] When the operator sits on the movable plate 27, it compresses the first spring 28 and moves downward, eventually bringing the lower end of the movable plate 27 into contact with the upper end of the base plate 10. During this process, as the movable plate 27 moves downward, the upper end of the first elastic compression ring 22 and the lower end of the second elastic compression ring 25 are compressed, and the cylinder 21 drives the base plate 23 to stretch the extension spring 24 downward. At the same time, the downward movement of the base plate 23 pulls the movable toothed plate 19 outward through the first pull rope 34. The movement of the movable toothed plate 19 drives the magnetic shielding plate 17 towards the inner cavity of the magnetic shielding cover 15 through the drive gear 37, thereby blocking the second magnet 16 and weakening the magnetic force between the second magnet 16 and the weight block 8, which is beneficial for the subsequent downward movement of the weight block 8. When the magnetic shielding plate 17 reaches the maximum magnetic shielding area of ​​the second magnet 16, the lower end of the movable plate 27... When the end contacts the seat plate 10, the weight block 8 will continue to move downwards due to the force of the human body. At this time, the first elastic compression ring 22 and the second elastic compression ring 25 continue to compress, and the extension spring 24 continues to be stretched. After the weight block 8 has descended a certain distance (this distance makes the magnetic force of the unobstructed second magnet 16 on the weight block 8 very small), the first elastic compression ring 22 deforms and passes through the inner diameter of the second elastic compression ring 25. At this time, through the elastic force of the extension spring 24, the cylinder 21 will drive the point 23 to return to its original position. At this time, through the elastic force of the connecting spring 20, the magnetic shielding plate 17 will release the obstruction of the second magnet 16 and return to its original position. In order to magnetically attract the weight block 8 that subsequently returns to its original position, the seat plate 10 moves downwards and drives the weight block 8 downwards. When the weight block 8 returns to its original position, its first elastic compression ring 22 will pass through the second elastic compression ring 25 again.

[0074] It should be noted that: First, the outer diameter of the first elastic compression ring 22 is larger than the inner diameter of the second elastic compression ring 25 but smaller than the outer diameter of the second elastic compression ring 25, so that the first elastic compression ring 22 can pass through the inner diameter of the second elastic compression ring 25 through compression; Second, the upper end of the blocking ring 13 on the cylinder 21 contacts the lower end of the top plate 5, which can block the upward movement of the cylinder 21, which is beneficial for the first elastic compression ring 22 to pass through the inner diameter of the second elastic compression ring 25.

[0075] As a preferred embodiment of this invention, an automatic reset unit is also included. When the seat plate 10 descends to the point where the gate 3 is fully open, the position of the seat plate 10 can be locked. After the water is drained, the lock is automatically released, and the seat plate 10 returns to its original position under the gravity of the gate 3 and the lifting rod 4.

[0076] When a large amount of water needs to be released, sitting on the seat 10 for a long time can easily cause discomfort. An automatic reset unit is set up so that the seat 10 will automatically lock after the weight block 8 moves into place. At this time, the person can leave the seat 10. After the water is released, the lock will automatically release and the seat 10 will return to its original position by the gravity of the gate 3 and the lifting rod 4.

[0077] As a preferred embodiment of this example, Figure 1 , Figure 10 and Figure 11 As shown, the automatic reset unit includes a mounting bracket 29 mounted on the column 9. A second spring 31 is fixed on the mounting bracket 29. One end of the second spring 31 is fixedly connected to a positioning rod 30. The positioning rod 30 slides through the mounting bracket 29. The upper end face of the positioning end of the positioning rod 30 is set as an inclined surface 32. A second pull rope 33 is fixed to one end of the positioning rod 30. One end of the second pull rope 33 is connected to a floating plate 35 in the inner cavity of the cement installation foundation 1. The floating plate 35 is slidably penetrated by a limiting column 36. The limiting column 36 is installed in the inner cavity of the cement installation foundation 1.

[0078] The end of the cross bar is provided with a positioning slot 26 that is adapted to the positioning rod 30.

[0079] When in use, when the seat plate 10 moves to a specific position, the lower end of its cross bar will be squeezed and extruded by the inclined surface on the positioning rod 30. As the seat plate 10 continues to move downward, the positioning rod 30 will move into the positioning slot 26, at which point the seat plate 10 is locked. As the gate 3 opens to release water, the water level gets lower and lower. When the water level reaches the minimum retention value, the second pull rope 33 will straighten the seat plate. At this time, the gravity of the float 35 acts on the second pull rope 33. The gravity of the float 35 causes the positioning rod 30 to squeeze the second spring 31 and move the positioning rod 30 out of the positioning slot 26. At this time, through the gravity of the gate 3 and the lifting rod 4, the weight block 8 is driven to move upward and return to its original position.

[0080] It should be noted that the setting of the limiting column 36 causes the floating plate 35 to move only along the direction of the limiting column 36, that is, longitudinally, and the limiting column can be a square structure.

[0081] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A gravity-driven gate, comprising a cement mounting base (1) with an inlet opening and an outlet opening, wherein a top plate (5) is provided at the upper end of the cement mounting base (1), and an mounting part (2) is provided in the inner cavity of the cement mounting base (1), wherein a gate plate (3) is movably mounted on the mounting part (2), characterized in that: The upper end of the gate (3) is equipped with a lifting rod (4) and also includes a gravity drive unit. The lifting rod (4) is driven to move up and down by the change of gravity of the human body acting on the equipment, thereby driving the gate (3) to open and close. The gravity drive unit includes a gear frame (6), a gear column (7), a column (9), a base plate (10), and a weight-adding block (8). The gears on the gear carrier (6) respectively mesh with the drive teeth arranged in a straight line on the gear column (7) and the lifting rod (4); The upper ends of the lifting rod (4) and the toothed column (7) slide through the top plate (5), and the lower end of the toothed column (7) is fixedly connected to the upper end of the weight-adding block (8). One end of the seat plate (10) is fixed on the toothed column (7), and a cross rod is fixed on the other end of the seat plate (10), and the cross rod is slidably engaged in the vertical slot provided on the column (9); The column (9) and the two gear racks (6) are both installed on the upper end of the top plate (5); The sum of the weights of the weight-adding block (8), the toothed column (7), and the seat plate (10) is less than the sum of the weights of the gate plate (3) and the lifting rod (4); It also includes an automatic reset unit, which can lock the position of the seat plate (10) when the seat plate (10) is lowered to the point where the gate plate (3) is fully open. After the water is drained, the lock is automatically released and the seat plate (10) returns to its original position by the gravity of the gate plate (3) and the lifting rod (4). The automatic reset unit includes a mounting bracket (29) installed on the column (9), a second spring (31) fixed on the mounting bracket (29), one end of the second spring (31) being fixedly connected to a positioning rod (30), the positioning rod (30) slidingly penetrating the mounting bracket (29), the upper end face of the positioning end of the positioning rod (30) being set as an inclined surface (32), one end of the positioning rod (30) being fixed with a second pull rope (33), and one end of the second pull rope (33) being connected to a floating plate (35) in the inner cavity of the cement installation foundation (1), the floating plate (35) being slidably penetrating by a limiting column (36), the limiting column (36) being installed in the inner cavity of the cement installation foundation (1); The end of the cross bar is provided with a positioning slot (26) that is adapted to the positioning rod (30).

2. A gravity-driven gate according to claim 1, characterized in that: It also includes a deceleration unit to slow down the movement speed of the gate (3) and the weight block (8).

3. A gravity-driven gate according to claim 2, characterized in that: The mitigation unit includes multiple square uprights (11) fixed to the lower end of the top plate (5). Multiple first magnets (12) are arranged in a straight line on the four sides of each square upright (11). The lower end of each square upright (11) slides through the weight-increasing block (8). A buffer spring (14) is installed at the lower end of each square upright (11).

4. A gravity-driven gate according to claim 3, characterized in that: It also includes a plurality of magnetic shields (15) with openings at the lower end of the top plate (5) and the inner cavity of the magnetic shields (15) is equipped with a second magnet (16).

5. A gravity-driven gate according to claim 4, characterized in that: It also includes a magnetic weakening unit, which can automatically weaken the magnetic attraction of the second magnet (16) to the weight block (8) before the weight block (8) moves downward.

6. A gravity-driven gate according to claim 5, characterized in that: The magnetic weakening unit includes a magnetic shielding plate (17), two opposing limiting strips (18), a movable toothed plate (19), a drive gear (37), a movable plate (27), and a cylinder (21) with a base plate (23). The magnetic shielding plate (17) slides through the magnetic shielding cover (15); Both of the limiting strips (18) are fixedly installed on the outer wall of the magnetic shield (15), and the drive gear (37) is installed at the lower end of the limiting strip (18) and meshes with the drive gear provided at the upper end of the magnetic shield (17). The movable toothed plate (19) is slidably disposed between the two limiting strips (18) and meshed with the drive gear (37). The upper end of the movable toothed plate (19) is fixedly connected to the magnetic shield (15) through a connecting spring (20). The movable toothed plate (19) is connected to the bottom plate (23) through a first pull rope (34). An extension spring (24) is provided between the bottom plate (23) and the top plate (5). The cylinder (21) is located at the upper end of the top plate (5) and slides through the cross rod. The upper end of the cylinder (21) and the through hole of the cross rod are respectively provided with a first elastic compression ring (22) and a second elastic compression ring (25). The cylinder (21) is located at the lower part of the top plate (5) and is fixedly sleeved with a blocking ring (13). The lower end of the movable plate (27) is fixed with a first spring (28), and the lower end of the first spring (28) is fixed in the mounting groove provided on the upper end of the seat plate (10).

Images