A protective cover opening and closing mechanism for a landscape gate

Abstract

The present invention discloses a shield opening and closing mechanism for a landscape gate, comprising a connecting rod mechanism, a plurality of movable shields, a plurality of fixed shields, and at least one driving device. The movable shield and the fixed shield are installed at intervals on the top of the gate. The shield opening and closing mechanism for the landscape gate is installed on the top of the gate body. The connecting rod mechanism comprises a plurality of short connecting rods and a connecting rod seat. The connecting rod seat is installed on the top of the gate. The connecting rod seat is configured to support the short connecting rod and the short connecting rod can move relative to the connecting rod seat. The movable shield is connected to a short connecting rod, and a plurality of adjacent short connecting rods are connected to form a long connecting rod. The connection between the adjacent short connecting rods is a movable connection. One end of the long connecting rod is connected to the driving device. The long connecting rod is configured to be driven by the driving device to perform reciprocating motion. The movable shield is configured to be driven by the long connecting rod to perform reciprocating motion. The long connecting rod of the present invention can reciprocate freely and is not affected by the deformation of the gate.

Description

Technical Field

[0001] The invention relates to the technical field of hydraulic machinery, and in particular to an opening and closing mechanism of a protective cover installed on the top of a steel gate. Background Art

[0002] It is common to install sprinklers or lights on the top of the gate to make a landscape dam. Due to the impact of water flow or debris in the water, a protective cover is usually set to cover the sprinklers and lights. The protective cover is opened when water needs to be sprayed or lights are used. When not in use, such as when the gate is in a tilted state, the protective cover is closed. Therefore, two types of protective covers, movable covers and fixed covers, are usually set. The movable cover is opened when the sprinkler is in use, and the movable cover is closed when the sprinkler is not in use. In the prior art, the protective cover is connected through the gate body by a long connecting rod. The movable cover is connected to the connecting rod and connected to the driving device. The movable cover can be moved under the drive of the driving device to realize the opening and closing of the movable cover. Since the gate is immersed in water for a long time, and the upstream water flow impacts the gate for a long time, especially the impact force during flood discharge is extremely large, the gate tends to deform to bulge downstream, such as Fig. 9 As shown, in the prior art, a complete connecting rod is used to cross the gate body. Since the connecting rod is a rigid body as a whole, when the gate is deformed, the connecting rod will also be deformed, resulting in the inability to open and close the movable protective cover normally. In addition, in the prior art, the connecting rod is installed on the outside of the protective cover, and debris in the water such as water plants, stones, garbage, etc. will be stuck in the middle of the connecting rod, resulting in the inability to open and close the movable cover normally. There is also a problem in the prior art, that is, when the gate is in a water-blocking state, the water storage has a torsion on the gate leaf, and a complete connecting rod cannot reciprocate freely, resulting in deformation, and the movable cover cannot be opened normally. Summary of the invention

[0003] In order to solve the problem that gate deformation causes deformation of the long connecting rod, which ultimately leads to obstruction of the opening and closing of the movable cover, and the problem that the long connecting rod is installed on the outside of the cover and is easily blocked by debris, the present invention provides a cover opening and closing mechanism for a landscape gate that will not be affected by gate deformation and open and close normally.

[0004] The purpose of the present invention can be achieved by the following technical solutions:

[0005] A shield opening and closing mechanism for a landscape gate comprises a connecting rod mechanism, a plurality of movable shields, a plurality of fixed shields, and at least one driving device, wherein the movable shield and the fixed shield are installed at intervals on the top of the gate; the shield opening and closing mechanism for the landscape gate is installed on the top of the gate, the connecting rod mechanism comprises a plurality of short connecting rods and a connecting rod seat, the connecting rod seat is installed on the top of the gate, the connecting rod seat is configured to support the short connecting rods and the short connecting rods can move relative to the connecting rod seat; the movable shield is connected to the short connecting rod, and a plurality of adjacent short connecting rods are connected to form a long connecting rod, and the connection between the adjacent short connecting rods is a movable connection; one end of the long connecting rod is connected to the driving device, the long connecting rod is configured to be driven by the driving device to perform reciprocating motion, and the movable shield is configured to be driven by the long connecting rod to perform reciprocating motion.

[0006] Another technical solution of the present invention is that on the basis of the above solution, the adjacent short connecting rods are connected by a pin.

[0007] Another technical solution of the present invention is that, based on the above solution, the axial projection lines of adjacent pin shafts have an angle.

[0008] In the present invention, adjacent short connecting rods can also be connected in the following manner: adjacent short connecting rods are connected by springs, and there is a gap between the adjacent short connecting rods. Further, the ends of the short connecting rods are provided with semicircular grooves, and the springs surround the peripheries of the semicircular grooves of the adjacent short connecting rods.

[0009] In the present invention, adjacent short connecting rods can also be connected in the following manner: a circular hole is provided at one end of the short connecting rod, and a circular shaft is provided at the other end, and the adjacent short connecting rods are connected by the circular hole and the circular shaft. Further, the circular hole has an opening, and the circular shaft has a connecting portion, the diameter of the circular hole is greater than the shortest longitudinal distance of the opening, the longitudinal distance of the opening is greater than the longitudinal distance of the connecting portion, the transverse distance of the opening is less than the transverse distance of the connecting portion, the adjacent short connecting rods can be displaced up and down, and the adjacent short connecting rods can rotate relatively.

[0010] In the present invention, adjacent short connecting rods can also be connected in the following manner: the adjacent short connecting rods are connected via a steel wire flexible shaft. Further, the short connecting rods have internal threads at both ends, the internal threads at one end are left-handed threads, and the internal threads at the other end are right-handed threads, the steel wire flexible shafts have external threads at both ends, the external threads at one end are left-handed threads, and the external threads at the other end are right-handed threads, and the internal threads at both ends of the connecting rods are matched and connected with the external threads at both ends of the steel wire flexible shafts.

[0011] In the present invention, adjacent short connecting rods can also be connected in the following manner: it also includes a hexagon socket screw, a ball head and a spherical washer, a threaded hole is set at one end of the short connecting rod, and a thread is set on the periphery of the other end, the center of the ball head has a hole, the hexagon screw passes through the spherical washer and the hole in the center of the ball head and is connected with the internal thread of the short connecting rod, the inner side of the ball head has a thread, one end of the adjacent short connecting rod with the thread set on the periphery is connected with the inner thread of the ball head, the short connecting rod and the hexagon socket screw, the spherical washer form assembly one, the adjacent short connecting rods and the ball head are combined into assembly two, and assembly one and assembly two can be rotated at any angle.

[0012] Another technical solution of the present invention is that on the basis of the above solution, the movable cover is fixedly connected to the short connecting rod.

[0013] Another technical solution of the present invention is based on the above solution, wherein the connecting rod mechanism is arranged on the inner side of the gate top, and the width of the movable cover in the upstream and downstream directions is smaller than the width of the fixed cover in the upstream and downstream directions.

[0014] Another technical solution of the present invention is based on the above solution and further includes a connecting plate, and the driving device is connected to the long connecting rod through the connecting plate.

[0015] Another technical solution of the present invention is based on the above solution, wherein the upstream end and the downstream end of the top of the gate are respectively provided with a long connecting rod and a corresponding connecting rod seat, the connecting plates are respectively connected to the long connecting rods on both sides, the connecting plates are configured to be driven by a driving device to perform simultaneous reciprocating motion, and the long connecting rods on both sides are configured to be driven by the connecting plates to perform reciprocating motion.

[0016] Another technical solution of the present invention is based on the above solution, and one side of the long connecting rod connected to the connecting plate has a double lifting ear, the double lifting ear has a lifting ear groove bottom, the connecting plate has a connecting plate bottom surface, and the lifting ear groove bottom is combined with the connecting plate bottom surface.

[0017] Another technical solution of the present invention is based on the above solution and further includes a pipe clamp, wherein the pipe clamp is installed on the outside of the short connecting rod, and the movable cover is detachably connected to the short connecting rod through the pipe clamp.

[0018] Another technical solution of the present invention is based on the above solution, wherein each movable cover is connected to the corresponding short connecting rod through two pipe clamps to form two supporting feet, one of which is located between two adjacent connecting rod seats, and the other is located outside the two adjacent connecting rod seats.

[0019] Another technical solution of the present invention is that based on the above solution, the movable cover is configured to be able to move to a position that completely blocks the gap between adjacent fixed covers, or to a position that partially or completely overlaps with the fixed cover, driven by a long connecting rod.

[0020] The present invention has the following beneficial effects:

[0021] (1) The width of the movable hood in the upstream and downstream directions is smaller than that of the fixed hood, that is, the movable hood is installed inside the fixed hood. When the movable hood is opened, the movable hood is inside the fixed hood, and the movable hood and the connecting rod mechanism are almost not affected by hydraulic force, which reduces the risk of deformation caused by pressure caused by water flow on the connecting rod mechanism.

[0022] (2) Each movable cover has two supporting feet connected to corresponding short connecting rods, one of which is between two adjacent connecting rod seats, and the other is outside the two adjacent connecting rod seats. This arrangement can shorten the distance between the two connecting rod seats, thereby shortening the length of the connecting rod, making it difficult for the connecting rod to bend when reciprocating.

[0023] (3) When the movable cover is closed, the water pressure on the movable cover is transmitted to the short connecting rod through the supporting feet. The short connecting rod then transmits the force to the connecting rod seat. Because the supporting feet are very close to the connecting rod seat, the short connecting rod is almost not subjected to bending moment. The short connecting rod is well stressed and is not easily deformed.

[0024] (4) The movable cover is connected to the connecting rod by a pipe clamp, which is convenient for disassembly and assembly. After the drive device, the long connecting rod and the connecting rod seat are assembled and debugged, the movable cover and the fixed cover can be installed according to the position requirements.

[0025] (5) Each movable cover can be disassembled and assembled independently without being affected by other movable covers and fixed covers; each movable cover has an independent front and rear adjustment amount, which can compensate for the processing errors of the movable cover, fixed cover and connecting rod, thereby eliminating cumulative errors.

[0026] (6) The driving device drives the long connecting rod to move, and the force is transmitted completely through the long connecting rod. The movable cover does not participate in the force transmission, and the strength and stiffness requirements of the movable cover are low.

[0027] (7) The long connecting rods on both sides are connected to the connecting plate through double lifting ears. When the double lifting ears are connected to the connecting plate, the bottom of the lifting ear groove fits with the bottom surface of the connecting plate, so that the mechanical synchronization of the connecting rods on both sides can be achieved.

[0028] (8) The long connecting rod is segmented and divided into multiple short connecting rods, which are movably connected in the middle. Adjacent short connecting rods can move. When the gate is deformed, each short connecting rod can move a certain angle with the gate, thereby ensuring that each short connecting rod does not bend, thereby reducing resistance during reciprocating motion.

[0029] (9) The long connecting rod is installed inside the fixed cover and the movable cover, which can effectively protect the long connecting rod from being blocked by foreign objects in the water such as stones, plants, garbage, etc., and the opening and closing of the movable cover will not be affected. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a schematic diagram of the movable cover in the open state;

[0031] Figure 2 A top view of the movable cover in an open state;

[0032] Figure 3 It is a schematic diagram of the movable cover in the closed state;

[0033] Figure 4 A top view of the movable cover in a closed state;

[0034] Figure 5 It is a schematic diagram of the structure when the movable cover and the fixed cover are not installed;

[0035] Figure 6 It is a top view when the movable cover and the fixed cover are not installed;

[0036] Figure 7 for Figure 5 The enlarged view of the middle A part is a schematic diagram of the structure of the adjacent short connecting rod pin connection;

[0037] Figure 8 for Figure 5 The enlarged view of part B in the figure is a schematic diagram of the connection structure between the long connecting rod and the connecting plate;

[0038] Fig. 9 This is a schematic diagram of the structure of the gate deforming in the river channel;

[0039] Fig.10 Schematic diagram of the connection method of adjacent short connecting rods in the second embodiment of the present invention;

[0040] Fig.11 Schematic diagram of the end structure of the short connecting rod in the second embodiment of the present invention;

[0041] Fig.12 Schematic diagram of the connection position of adjacent short connecting rods in the second embodiment of the present invention;

[0042] Fig.13 Schematic diagram of the connection position of adjacent short connecting rods in the third embodiment of the present invention;

[0043] Fig.14 Schematic diagram of the end structure of the short connecting rod in the third embodiment of the present invention;

[0044] Fig.15 It is a schematic structural diagram of the other end portion of the short connecting rod in the third embodiment of the present invention;

[0045] Fig.16 Schematic diagram of the connection position of adjacent short connecting rods in the fourth embodiment of the present invention;

[0046] Fig.17 for Fig.16 A cross-sectional view of

[0047] Fig.18 Schematic diagram of the connection position of adjacent short connecting rods in the fifth embodiment of the present invention;

[0048] Fig.19 for Fig.18 sectional view of .

[0049] Reference numerals:

[0050] Movable cover 1, fixed cover 2, short connecting rod 3, connecting rod seat 4, long connecting rod 5, long connecting rod 1 501, long connecting rod 2 502, driving device 6, connecting plate 7, connecting plate bottom surface 701, double lifting ear 8, double lifting ear bottom surface 801, shaft 9, pipe clamp 10, supporting foot 11, semicircular groove 12, spring 13, round hole 14, opening 15, round shaft 16, connecting part 17, internal thread 18, steel wire flexible shaft 19, external thread 20, assembly 1 21, assembly 2 22, hexagon socket screw 23, ball head 24, ball head convex surface 24a, ball head concave surface 24b, spherical washer 25;

[0051] The longitudinal distance of the connecting part is d, the transverse distance of the connecting part is l, the shortest longitudinal distance of the opening is D, and the transverse distance of the opening is L. DETAILED DESCRIPTION

[0052] In conjunction with the accompanying drawings, the first embodiment of the present invention is further described:

[0053] like Figure 1-8 As shown, a shield opening and closing mechanism of a landscape gate comprises a connecting rod mechanism, a plurality of movable shields 1, a plurality of fixed shields 2, and at least one driving device 6, wherein the movable shield 1 and the fixed shield 2 are installed at intervals on the top of the gate; the shield opening and closing mechanism of the landscape gate is installed on the top of the gate, the connecting rod mechanism comprises a plurality of short connecting rods 3 and a connecting rod seat 4, the connecting rod seat 4 is installed on the top of the gate, the connecting rod seat 4 is configured to support the short connecting rod 3 and the short connecting rod 3 can move relative to the connecting rod seat 4; the movable shield 1 is connected to the short connecting rod 3, and a plurality of adjacent short connecting rods 3 are connected by a pin shaft to form a long connecting rod 5, and the connection between adjacent short connecting rods is a movable connection, such as Figure 7As shown; one end of the long connecting rod 5 is connected to the driving device 6, and the long connecting rod 5 is configured to be driven by the driving device 6 to reciprocate, and the movable cover 1 is configured to be driven by the long connecting rod 5 to reciprocate; the connecting rod mechanism is arranged on the inner side of the top of the gate, the width of the movable cover 1 in the upstream and downstream directions is smaller than the width of the fixed cover 2 in the upstream and downstream directions, and the movable cover 1 is installed inside the fixed cover 2, and the movable cover 1 is configured to be driven by the long connecting rod 5 to move to a position that completely blocks the gap between adjacent fixed covers 2, or to a position that partially or completely overlaps with the fixed cover 2. A number of short connecting rods 3 are connected by pins to form a long connecting rod 5, and the long connecting rod can reciprocate freely. Regardless of the degree of flexibility generated on the gate leaf when the gate is filled with water, or the impact force of the flowing water on the gate when discharging flood water, it can ensure that the short connecting rod does not deform, and the movable cover can be opened and closed normally.

[0054] Furthermore, the movable cover 1 is fixedly connected to the short connecting rod 3 .

[0055] Furthermore, the projection lines of the axes 9 of adjacent pins have an angle, so that the short connecting rod can be rotated at multiple angles to avoid deformation of the short connecting rod 3.

[0056] Furthermore, it also includes a connecting plate 7, and the upstream end and the downstream end of the gate top are respectively provided with a long connecting rod 1 501 and a long connecting rod 2 502 and corresponding connecting rod seats 4, and the connecting plate 7 is respectively connected to the long connecting rod 1 501 and the long connecting rod 2 502 on both sides, and the connecting plate 7 is configured to be driven by the driving device 6 to reciprocate, and the long connecting rod 1 501 and the long connecting rod 2 502 on both sides are configured to be driven by the connecting plate 7 to reciprocate simultaneously. Figure 1-2 The driving device drives the long connecting rod 1 501 and the long connecting rod 2 502 to drive the movable cover 2 to move to the position where the movable cover is opened. Figure 3-4 The driving device drives the long connecting rod 1 501 and the long connecting rod 2 502 to drive the movable cover 2 to move to the position where the movable cover is closed.

[0057] Further, such as Figure 8 As shown, one side where the long connecting rod 5 is connected to the connecting plate 7 has a double lifting ear 8, and the double lifting ear 8 has a lifting ear groove bottom 801. The connecting plate 7 has a connecting plate bottom surface 701. The lifting ear groove bottom 801 is combined with the connecting plate bottom surface 701 to achieve mechanical synchronization of the long connecting rod 1 501 and the long connecting rod 2 502 on both sides.

[0058] Furthermore, it also includes a pipe clamp 10, which is installed on the outside of the short connecting rod 3 and is detachably connected to the short connecting rod 3. Each movable cover 1 is connected to the corresponding short connecting rod 3 through two pipe clamps to form two supporting feet 11. Figure 3As shown, one of the supporting feet is located between two adjacent connecting rod seats 4, and the other supporting foot is located outside the two adjacent connecting rod seats 4. This arrangement can shorten the distance between the two connecting rod seats 4, thereby shortening the length of the short connecting rod 3, so that the connecting rod is not easy to bend when reciprocating. When the movable cover 1 is closed, the water pressure on the movable cover 1 is transmitted to the short connecting rod 3 through the supporting feet 11, and the short connecting rod 3 then transmits the force to the connecting rod seat 4. Since the supporting feet 11 are very close to the connecting rod seat 4, the short connecting rod 3 is almost not subjected to bending moment, and the force condition of the short connecting rod is good.

[0059] Furthermore, the pipe clamp 10 is a U-shaped pipe clamp, and the movable cover 1 is detachably connected to the U-shaped pipe clamp by screws to fix the short connecting rod 3.

[0060] Furthermore, the driving device 6 may be a hydraulic cylinder.

[0061] The second embodiment of the present invention makes the following improvements in the connection mode of the short connecting rod: Figure 10-12 As shown, a semicircular groove 12 is provided at the end of the short connecting rod 3, and adjacent short connecting rods are connected by springs 13. The springs 13 surround the periphery of the semicircular grooves 12 of adjacent short connecting rods 3, and there is a gap between the adjacent short connecting rods 3. With such a connection method, the adjacent short connecting rods can rotate with the help of the spring 13 when subjected to impact force, and the gaps between adjacent short connecting rods allow the adjacent short connecting rods to rotate 360 ​​degrees, thereby reducing the risk of deformation of the short connecting rods.

[0062] The third embodiment of the present invention makes the following improvements in the connection mode of the short connecting rod: Figure 13-15 As shown, a circular hole 14 is provided at one end of the short connecting rod, and the circular hole 14 has an opening 15. A circular shaft 16 is provided at the other end, and the circular shaft 16 has a connecting portion 17. The diameter of the circular hole 14 is larger than the shortest longitudinal distance D of the opening, the shortest longitudinal distance D of the opening 15 is larger than the longitudinal distance d of the connecting portion 17, and the lateral distance L of the opening 15 is smaller than the lateral distance l of the connecting portion 17. Adjacent short connecting rods are connected by the circular hole 14 and the circular shaft 16. The adjacent short connecting rods have a certain rotation angle and can be displaced up and down to reduce the risk of connecting rod deformation.

[0063] The fourth embodiment of the present invention makes the following improvements in the connection mode of the short connecting rod: Figure 16-17As shown, the two ends of the short connecting rod have internal threads 18, the internal threads at one end are left-handed threads, and the internal threads at the other end are right-handed threads. The adjacent short connecting rods are connected by a steel wire flexible shaft 19, and the two ends of the steel wire flexible shaft have external threads 20, the external threads at one end are left-handed threads, and the external threads at the other end are right-handed threads. The left-handed threads at the end of the connecting rod cooperate with the left-handed threads at the end of the steel wire flexible shaft, and the right-handed threads at the end of the connecting rod cooperate with the right-handed threads at the end of the steel wire flexible shaft. After the adjacent short connecting rods are connected, the adjacent connecting rods can rotate at a small angle of 360 degrees to reduce the risk of deformation of the connecting rods.

[0064] The fourth embodiment of the present invention makes the following improvements in the connection mode of the short connecting rod: Figure 18-19 As shown, it includes a hexagon socket screw 23, a ball head 24 and a spherical washer 25. One end of the short connecting rod is milled with a concave spherical surface and a threaded hole is set. The other end of the short connecting rod is set with an external thread. The ball head has a convex surface 24a and a concave surface 24b. The convex surface 24a and the concave surface 24b of the ball head are concentric. The center of the ball head 24 has a hole for matching with the hexagon socket screw 23. The ball head 24 has an internal thread for matching and connecting with the external thread of the short connecting rod. The specific connection method is: the spherical washer 25 is installed inside the ball head and connected with the The concave surface 24b of the ball head cooperates, the hexagon socket screw 23 passes through the spherical washer 25 and the hole in the center of the ball head 24 and is cooperated with the threaded hole of the connecting rod, and one end of the adjacent short connecting rod with an external thread is cooperated with the internal thread of the ball head; the short connecting rod, the hexagon socket screw 23, and the spherical washer 25 form an assembly 1 21, and the adjacent short connecting rod and the ball head 24 are combined into an assembly 2 22. The assembly 1 21 and the assembly 2 22 can be rotated at any angle to reduce the impact of external force on the short connecting rod and prevent the short connecting rod from deforming.

[0065] The above are only preferred embodiments of the present invention. The protection scope of the present invention is not limited to the embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and changes without departing from the principle of the present invention should be regarded as the protection scope of the present invention.

Claims

1. A shield opening and closing mechanism for a landscape gate, characterized in that: It includes a connecting rod mechanism, a plurality of movable covers, a plurality of fixed covers, and at least one driving device, wherein the movable covers and the fixed covers are installed at intervals on the top of the gate; The connecting rod mechanism is arranged on the inner side of the gate top, and the width of the movable cover in the upstream and downstream directions is smaller than the width of the fixed cover in the upstream and downstream directions; The guard opening and closing mechanism of the landscape gate is installed on the top of the gate, and the connecting rod mechanism includes a plurality of short connecting rods and a connecting rod seat. The connecting rod seat is installed on the top of the gate, and the connecting rod seat is configured to support the short connecting rod and the short connecting rod can move relative to the connecting rod seat; The movable cover is connected to a short connecting rod, and a plurality of adjacent short connecting rods are connected to form a long connecting rod. The adjacent short connecting rods are connected by a pin shaft. When the gate is deformed, each short connecting rod can move with the gate. One end of the long connecting rod is connected to the driving device, and the long connecting rod is configured to be driven by the driving device to perform reciprocating motion. The movable cover is configured to be driven by the long connecting rod to perform reciprocating motion. Regardless of the flexibility of the gate leaf caused by the water storage in the gate, or the impact force of the flowing water on the gate during flood discharge, the short connecting rod will not be deformed, and the movable cover can be opened and closed normally.

2. A shield opening and closing mechanism for a landscape gate, characterized in that: It includes a connecting rod mechanism, a plurality of movable covers, a plurality of fixed covers, and at least one driving device, wherein the movable covers and the fixed covers are installed at intervals on the top of the gate; The connecting rod mechanism is arranged on the inner side of the gate top, and the width of the movable cover in the upstream and downstream directions is smaller than the width of the fixed cover in the upstream and downstream directions; The guard opening and closing mechanism of the landscape gate is installed on the top of the gate, and the connecting rod mechanism includes a plurality of short connecting rods and a connecting rod seat. The connecting rod seat is installed on the top of the gate, and the connecting rod seat is configured to support the short connecting rod and the short connecting rod can move relative to the connecting rod seat; The movable cover is connected to a short connecting rod, and a plurality of adjacent short connecting rods are connected to form a long connecting rod. A semicircular groove is arranged at the end of the short connecting rod, and adjacent short connecting rods are connected by springs. The springs surround the periphery of the semicircular grooves of adjacent short connecting rods, and there is a gap between the adjacent short connecting rods. One end of the long connecting rod is connected to the driving device, and the long connecting rod is configured to be driven by the driving device to perform reciprocating motion. The movable cover is configured to be driven by the long connecting rod to perform reciprocating motion. Regardless of the flexibility of the gate leaf caused by the water storage in the gate, or the impact force of the flowing water on the gate during flood discharge, the short connecting rod will not be deformed, and the movable cover can be opened and closed normally.

3. A shield opening and closing mechanism for a landscape gate, characterized in that: It includes a connecting rod mechanism, a plurality of movable covers, a plurality of fixed covers, and at least one driving device, wherein the movable covers and the fixed covers are installed at intervals on the top of the gate; The connecting rod mechanism is arranged on the inner side of the gate top, and the width of the movable cover in the upstream and downstream directions is smaller than the width of the fixed cover in the upstream and downstream directions; The guard opening and closing mechanism of the landscape gate is installed on the top of the gate, and the connecting rod mechanism includes a plurality of short connecting rods and a connecting rod seat. The connecting rod seat is installed on the top of the gate, and the connecting rod seat is configured to support the short connecting rod and the short connecting rod can move relative to the connecting rod seat; The movable cover is connected to a short connecting rod, and a plurality of adjacent short connecting rods are connected to form a long connecting rod. A circular hole is arranged at one end of the short connecting rod, and the circular hole has an opening. A circular shaft is arranged at the other end, and the circular shaft has a connecting portion. The diameter of the circular hole is greater than the shortest longitudinal distance D of the opening, and the shortest longitudinal distance D of the opening is greater than the longitudinal distance d of the connecting portion. The transverse distance L of the opening is less than the transverse distance l of the connecting portion. Adjacent short connecting rods are connected by the circular hole and the circular shaft. The adjacent short connecting rods have a rotation angle and can be displaced up and down. One end of the long connecting rod is connected to the driving device, and the long connecting rod is configured to be driven by the driving device to perform reciprocating motion. The movable cover is configured to be driven by the long connecting rod to perform reciprocating motion. Regardless of the flexibility of the gate leaf caused by the water storage in the gate, or the impact force of the flowing water on the gate during flood discharge, the short connecting rod will not be deformed, and the movable cover can be opened and closed normally.

4. A shield opening and closing mechanism for a landscape gate, characterized in that: It includes a connecting rod mechanism, a plurality of movable covers, a plurality of fixed covers, and at least one driving device, wherein the movable covers and the fixed covers are installed at intervals on the top of the gate; The connecting rod mechanism is arranged on the inner side of the gate top, and the width of the movable cover in the upstream and downstream directions is smaller than the width of the fixed cover in the upstream and downstream directions; The guard opening and closing mechanism of the landscape gate is installed on the top of the gate, and the connecting rod mechanism includes a plurality of short connecting rods and a connecting rod seat. The connecting rod seat is installed on the top of the gate, and the connecting rod seat is configured to support the short connecting rod and the short connecting rod can move relative to the connecting rod seat; The movable cover is connected to the short connecting rod, and several adjacent short connecting rods are connected to form a long connecting rod. Both ends of the short connecting rod have internal threads, one end of the internal thread is a left-handed thread, and the other end of the internal thread is a right-handed thread. Adjacent short connecting rods are connected through a steel wire flexible shaft. Both ends of the steel wire flexible shaft have external threads, one end of the external thread is a left-handed thread, and the other end of the external thread is a right-handed thread. The left-handed thread at the end of the short connecting rod cooperates with the left-handed thread at the end of the steel wire flexible shaft, and the right-handed thread at the end of the short connecting rod cooperates with the right-handed thread at the end of the steel wire flexible shaft. One end of the long connecting rod is connected to the driving device, and the long connecting rod is configured to be driven by the driving device to perform reciprocating motion. The movable cover is configured to be driven by the long connecting rod to perform reciprocating motion. Regardless of the flexibility of the gate leaf caused by the water storage in the gate, or the impact force of the flowing water on the gate during flood discharge, the short connecting rod will not be deformed, and the movable cover can be opened and closed normally.

5. The shield opening and closing mechanism of the landscape gate according to any one of claims 1 to 4, characterized in that: It also includes a connecting plate, and the driving device is connected to the long connecting rod through the connecting plate.

6. The shield opening and closing mechanism of the landscape gate according to claim 5, characterized in that: The upstream end and the downstream end of the gate top are respectively provided with a long connecting rod and a corresponding connecting rod seat, the connecting plate is respectively connected to the long connecting rods on both sides, the connecting plate is configured to be driven to reciprocate by a driving device, and the long connecting rods on both sides are configured to be driven to reciprocate simultaneously by the connecting plate.

7. The shield opening and closing mechanism of the landscape gate according to claim 6, characterized in that: The side where the long connecting rod is connected to the connecting plate has double lifting ears, the double lifting ears have lifting ear groove bottoms, the connecting plate has a connecting plate bottom surface, and the lifting ear groove bottom is combined with the connecting plate bottom surface.

8. The shield opening and closing mechanism of the landscape gate according to any one of claims 1 to 4, characterized in that: The movable cover is fixedly connected to the short connecting rod.

9. The shield opening and closing mechanism of the landscape gate according to any one of claims 1 to 4, characterized in that: It also includes a pipe clamp, which is installed on the outside of the short connecting rod, and the movable cover and the short connecting rod are detachably connected through the pipe clamp.

10. The shield opening and closing mechanism of the landscape gate according to claim 9, characterized in that: Each movable cover is connected to the corresponding short connecting rod through two pipe clamps to form two supporting feet, one of which is located between two adjacent connecting rod seats, and the other is located outside the two adjacent connecting rod seats.

11. The shield opening and closing mechanism of the landscape gate according to any one of claims 1 to 4, characterized in that: The movable cover is configured to be able to move to a position where it completely covers the gap between adjacent fixed covers, or to a position where it partially or completely overlaps with the fixed covers, driven by the long connecting rod.

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