Rack and gear driving type bidirectional rotating gate

Abstract

The utility model discloses a rack and gear drive type bidirectional rotary gate which comprises a rotary gate body, a drive device, a locking device and a stroke sensor, the rotary gate body is located between gate piers on the two sides, and the drive device and the locking device are both installed on the gate piers on the two sides; the rotary gate comprises a water retaining gate leaf, a support arm and cantilever type trunnions installed on gate piers on the two sides, the water retaining gate leaf is connected with the support arm, the support arm is hinged to the cantilever type trunnions and rotates around the cantilever type trunnions, and the cantilever type trunnions are surrounded in the center by the support arm; a rack is fixedly mounted on the support arm; the driving devices comprise power devices, driving gears and brakes, the power devices drive the driving gears, the driving gears and racks installed on the supporting arms form rack-gear transmission to drive the rotary gate to rotate, and synchronous operation of the driving devices on the two sides is guaranteed through the power devices according to numerical signals of the stroke sensors. And the rotary gate is held at any opening degree by the brake. The device is simple to operate, convenient to overhaul and low in maintenance cost.

Description

Technical Field

[0001] This utility model relates to a gate, and more particularly to a bidirectional rotary gate, specifically a rack and pinion driven bidirectional rotary gate. Background Technology

[0002] Traditional bidirectional rotary gates are mostly driven by hydraulic cylinders, with a few using winch-type hoists. Due to their large size, these devices are unsightly when installed outdoors, and returning them for maintenance is difficult and costly. For hydraulic cylinder-driven gates, maintenance requires rotating the gate to its flat position on top. This necessitates first replacing the connection point between the hydraulic cylinder and the gate with another point closer to the gate leaf panel when the gate is fully closed and blocking water. This disassembly and installation is extremely inconvenient and unsafe. For winch-type hoists, the winch must be installed at a sufficiently high position to rotate the gate to its flat position on top for maintenance. This arrangement disrupts the surrounding landscape and is disliked by the owner.

[0003] Therefore, from the perspective of the arrangement, inspection and maintenance of bidirectional rotary gates, the existing bidirectional rotary gate design has shortcomings. Utility Model Content

[0004] The purpose of this invention is to avoid the cumbersome operation of switching the lifting points of the hydraulic cylinder of the bidirectional rotary gate, and also to avoid the conflict between the layout of the winch hoist and the surrounding landscape of the project, so as to achieve convenient and safe gate maintenance and harmony with the surrounding landscape. A rack and pinion driven bidirectional rotary gate is proposed.

[0005] The technical solution adopted by this utility model to achieve the above objectives is as follows:

[0006] A rack and pinion driven bidirectional rotary gate includes a rotary gate, a drive unit, a locking device, and a stroke sensor. The rotary gate is located between two gate piers, and the drive unit and locking device are both mounted on the two gate piers. The rotary gate includes a water-retaining gate leaf, a support arm, and cantilever hinges mounted on the two gate piers. The water-retaining gate leaf and the support arm are connected as a whole. The support arm is hinged to the cantilever hinge and rotates around the cantilever hinge. The support arm surrounds the cantilever hinge in the center, protecting the cantilever hinge from direct impact from ships and increasing the impact resistance of the support arm and hinge. A rack is fixedly mounted on the support arm. The drive unit includes a power unit, a drive gear, and a brake. The power unit drives the drive gear, and the drive gear and the rack mounted on the support arm form a rack and pinion transmission, driving the rotary gate to rotate. The stroke sensor is set on the drive unit. Based on the numerical signal of the stroke sensor, the power unit ensures the synchronous operation of the two drive units. The brake holds the rotary gate at any opening position.

[0007] Furthermore, the support arm is provided with a first locking hole, a second locking hole, and a third locking hole. When a certain locking hole is coaxial with the pin of the locking device, the locking device pushes the pin into the locking hole to lock the rotary gate.

[0008] Furthermore, the support arm is disc-shaped, and a counterweight is filled in the disc box of the support arm. The counterweight and the water-blocking gate leaf are respectively arranged on both sides of the cantilever hinge to balance the self-weight of the water-blocking gate leaf, thereby reducing the driving torque of the drive device and enhancing the operating stability of the rotary gate.

[0009] Furthermore, the power unit adopts a variable frequency motor, a servo motor, or a hydraulic motor, and synchronous correction of the power units on both sides is achieved through the feedback of the detection signal from the stroke sensor.

[0010] Furthermore, when the rotary gate needs to be rotated downwards from the fully closed water-blocking position to a horizontal position at the bottom of the gate, the driving device drives the driving gear to rotate, thereby driving the rack to rotate, thus realizing the downward rotation of the rotary gate; when the rotary gate needs to be rotated upwards to the fully closed water-blocking position, the driving device drives the driving gear to rotate, thereby driving the rack to rotate, thus realizing the upward rotation of the rotary gate to close; when the rotary gate needs to be rotated upwards from the fully closed water-blocking position to the gate top maintenance position, the driving device drives the driving gear to rotate, thereby driving the rack to rotate, thus realizing the upward rotation of the rotary gate to the maintenance position.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] (1) Existing hydraulic cylinder-driven bidirectional rotary gates cannot be directly rotated upwards from a fully closed, water-blocking state. It is necessary to first replace the connection point between the driving hydraulic cylinder and the rotary gate before the gate can be rotated to the top for maintenance. Furthermore, disassembling the connecting pin between the driving hydraulic cylinder and the rotary gate is difficult, and concentric positioning of the lifting head of the driving hydraulic cylinder and the lifting lug of the rotary gate is even more challenging. The replacement process of the connection point is time-consuming, labor-intensive, and unsafe. This invention adopts a rack and pinion drive system, which allows the gate to rotate freely up and down, completely eliminating the need to switch lifting points. It is convenient to operate and safe and reliable.

[0013] (2) Existing winch-driven bidirectional rotary gates have high winch installation platforms, which seriously affect the surrounding landscape. This utility model adopts a rack and pinion drive method, with a compact and concealed drive device structure that does not affect the surrounding landscape.

[0014] (3) Existing bidirectional rotary gates use hydraulic cylinders or winches for opening and closing. The opening and closing equipment has a large structural size. Once it needs to be returned to the factory for repair, the hoisting work is large and it needs to be matched with traffic roads, resulting in large project investment and high maintenance costs. The rack and pinion drive device adopted in this utility model has a compact structure, smaller size, is easy to hoist, has no special requirements for traffic roads, reduces project investment, and lowers maintenance costs.

[0015] (4) Existing bidirectional rotary gates use fan-shaped or Y-shaped irregular support arms, resulting in a large self-weight torque of the gate and a large driving torque of the drive equipment. This utility model adopts a disc-type support arm, and fills the disc box on the opposite side of the water-blocking gate leaf with counterweight to balance the self-weight of the water-blocking gate leaf, thereby reducing the driving torque of the drive device and enhancing the rotational stability of the rotary gate.

[0016] (5) Existing bidirectional rotary gate supports use fan-shaped or Y-shaped irregular structures, and the hinges are easily subjected to direct impact from passing vessels. This utility model uses a disc-shaped support to surround the cantilever hinges of the rotary gate in the center, protecting the cantilever hinges from direct impact from ships, increasing the impact resistance of the support and hinges, and improving the navigation safety of the project. Attached Figure Description

[0017] Figure 1 This is a plan view of the present invention;

[0018] Figure 2 This is a schematic diagram of the present invention in the fully closed water-blocking position of the gate;

[0019] Figure 3 This is a schematic diagram of the present invention in the fully open discharge position of the gate;

[0020] Figure 4 This is a schematic diagram of the gate maintenance position according to the present invention;

[0021] Figure 5 This is a schematic diagram of the present invention at any opening degree of the gate;

[0022] Figure 6 This is a schematic diagram of the gate drive device connection of this utility model.

[0023] In the diagram: 1-Swivel gate; 11-Water-blocking gate leaf; 12-Disc-type support arm; 13-Cantilever hinge; 14-Rack; 15-First locking hole; 16-Second locking hole; 17-Third locking hole; 18-Counterweight; 2-Drive device; 21-Motor; 22-Drive gear; 23-Brake; 24-Stroke sensor; 3-Locking device. Detailed Implementation

[0024] The present invention will now be described in detail with reference to specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but are not intended to limit the present invention in any way. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention, such as replacing the motor drive with a hydraulic motor drive. These all fall within the protection scope of the present invention.

[0025] In the description of this application, it should be understood that the terms up, down, front, back, left, right, top, bottom, inside, outside, etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0026] like Figure 1 , Figure 5 , Figure 6 As shown, this utility model discloses a rack and pinion driven bidirectional rotary gate, including a rotary gate 1 located between two gate piers, a driving device 2 installed on the two gate piers, and a locking device 3. The rotary gate 1 includes a water-blocking gate leaf 11, a disc-shaped support arm 12, and a cantilever hinge 13 installed on the two gate piers. The water-blocking gate leaf 11 and the disc-shaped support arm 12 are connected or welded together by high-strength bolts. The disc-shaped support arm 12 is hinged to the cantilever hinge 13 and rotates around the cantilever hinge 13. The disc-shaped support arm 12 is provided with a first locking hole 15 (fully closed locking hole), a second locking hole 16 (fully open locking hole), and a third locking hole 17 (maintenance locking hole). When a certain locking hole is coaxial with the pin of the locking device 3, the locking device 3 pushes the pin into the locking hole to lock the rotary gate 1.

[0027] A rack 14 is fixedly installed on the disc-type support arm 12. The disc box of the disc-type support arm 12 is filled with a counterweight 18. The counterweight 18 and the water-blocking gate leaf 11 are respectively arranged on both sides of the cantilever hinge 13 to partially offset the self-weight torque of the gate body water-blocking gate leaf 11, which is conducive to the stable operation of the rotating gate 1 and can reduce the driving torque of the opening and closing equipment.

[0028] The drive unit 2 includes a motor 21, a drive gear 22, and a brake 23. The motor 21 is either a variable frequency motor or a servo motor. The motor 21 drives the drive gear 22, which, together with a rack 14 mounted on the disc-shaped support arm 12, forms a rack and pinion transmission, causing the rotary gate 1 to rotate. Based on the detection signal from the stroke sensor 24, the speed of the motor 21 is adjusted to ensure synchronous operation of the drive units 2 on both sides. Figure 6 As shown, brake 23 can hold the gate at any opening position.

[0029] The operation mode of this utility model is as follows:

[0030] Rotary gate 1 from the fully closed position to the fully open position: (e.g.) Figure 2 , Figure 3 As shown, when the rotary gate 1 is in the fully closed water-blocking position, the drive device 2 is installed on the center line of the rack 14. At this time, the pin of the locking device 3 extends into the first locking hole 15 to lock the rotary gate 1. When the rotary gate 1 needs to be opened to discharge water, the rotary gate 1 is first unlocked by the locking device 3. Then, the drive device 2 is started to drive the rotary gate 1 to rotate downwards until it is fully open and lying flat at the bottom of the gate. Finally, the locking pin of the locking device 3 is inserted into the second locking hole 16 to lock the rotary gate 1.

[0031] Rotary gate 1 from fully open to fully closed: (e.g.) Figure 2 , Figure 3 As shown, the rotating gate 1 moves from the fully open position to the fully closed position: When the rotating gate 1 needs to be closed to block water, the rotating gate 1 is first unlocked by the locking device 3, and the driving device 2 is started to drive the rotating gate 1 to rotate upward to the fully closed position. The locking pin of the locking device 3 is then inserted into the first locking hole 15 to lock the rotating gate 1.

[0032] Rotary gate 1 from the fully closed position to the maintenance position: (e.g.) Figure 2 , Figure 4 As shown, when the rotary gate 1 needs to be rotated from the fully closed position to the maintenance position, the rotary gate 1 is first unlocked by the locking device 3, and then the drive device 2 is started to drive the rotary gate 1 to rotate to the maintenance position. After that, the locking pin of the locking device 3 is inserted into the third locking hole 17 to lock the rotary gate 1.

[0033] The above embodiments have been described with reference to the accompanying drawings, but they should not be construed as limiting the scope of the present utility model. It should be noted that for those skilled in the art, any technical solutions obtained by equivalent substitution or equivalent transformation without departing from the concept of the present utility model are all within the protection scope of the present utility model.

Claims

1. A rack and pinion driven bidirectional rotary gate characterized by: The system includes a rotating gate, a drive unit, a locking device, and a stroke sensor. The rotating gate is located between two gate piers, and the drive unit and locking device are both mounted on the two gate piers. The rotating gate includes a water-retaining gate leaf, a support arm, and cantilever hinges mounted on the two gate piers. The water-retaining gate leaf is connected to the support arm, and the support arm is hinged to the cantilever hinge and rotates around the cantilever hinge, with the support arm surrounding the cantilever hinge at its center. A rack is fixedly mounted on the support arm. The drive unit includes a power unit, a drive gear, and a brake. The power unit drives the drive gear, and the drive gear and the rack mounted on the support arm form a rack and pinion transmission, driving the rotating gate to rotate. The power unit ensures the synchronous operation of the two drive units based on the numerical signal from the stroke sensor, and the brake holds the rotating gate at any opening position.

2. The rack and pinion driven bidirectional rotary gate according to claim 1, characterized in that: The support arm is provided with a first locking hole, a second locking hole, and a third locking hole. When a certain locking hole is coaxial with the pin of the locking device, the locking device pushes the pin into the locking hole to lock the rotary gate.

3. Rack and pinion driven bidirectional rotary gate according to claim 1 or 2, characterized in that: The outrigger is a disc-type outrigger, and the disc housing of the outrigger is filled with a counterweight. The counterweight and the water-blocking gate leaf are respectively arranged on both sides of the cantilever hinge.

4. The rack and pinion driven double acting rotary gate according to claim 1, wherein: The power unit adopts a variable frequency motor, a servo motor, or a hydraulic motor, and synchronous correction of the power units on both sides is achieved through the feedback of the detection signal from the stroke sensor.

5. The rack and pinion driven, bi-directional rotary gate according to claim 1, wherein: When the rotating gate needs to be opened from the fully closed water-blocking position to the position lying flat at the bottom of the gate, the driving device drives the driving gear to rotate, thereby driving the rack to rotate, so that the rotating gate can be opened by rotating downward; when the rotating gate needs to be opened to the fully closed water-blocking position, the driving device drives the driving gear to rotate, thereby driving the rack to rotate, so that the rotating gate can be closed by rotating upward; when the rotating gate needs to be opened from the fully closed water-blocking position to the gate top maintenance position, the driving device drives the driving gear to rotate, thereby driving the rack to rotate, so that the rotating gate can be opened to the maintenance position.

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