Multi-stage locking device for radial gate

Abstract

The utility model discloses a kind of multi-stage locking devices of arc gate, for water conservancy and water conservancy and water transport engineering.The device includes the arc gate rotationally arranged in flow passage, and the multiple-stage locking assembly is arranged on the pier above flow passage, and there is ratchet and pawl structure between arc gate panel.The multiple-stage locking assembly contains pier support, pawl and ratchet block, one side of pawl is connected with hydraulic oil cylinder as rotating drive structure, the other side is connected with tension spring as elastic reset structure, pier is equipped with infrared sensor and control unit for recording the number of times of ratchet block, and control hydraulic oil cylinder.Pawl movable end bottom surface has inclined groove slag groove.This device can lock arc gate at multiple heights through ratchet and pawl structure, change traditional positioning mode relying on hydraulic hoist or winch, reduce equipment load, prolong service life;Satisfy different opening degree locking demand, improve work efficiency, reduce energy consumption;Infrared sensor and control unit realize automatic control, reduce manual operation, improve accuracy and safety.

Description

Technical Field

[0001] This utility model relates to the technical field of arc gates in water conservancy and hydropower projects, and in particular to a multi-level locking device for arc gates. Background Technology

[0002] In the water conservancy, hydropower and water transport engineering industry, arc gates are widely used as working gates in spillway structures due to their advantages such as simple structure, small opening and closing force, easy operation and good water flow conditions.

[0003] During maintenance and repair of arc-shaped gates, due to their long maintenance cycles, hydraulic hoists or fixed winches are typically used to lift the gate above the opening for locking. Locking holes are usually installed on the side posts of the arc-shaped gate, and manual pin locking is performed. The number of locking holes is limited by the structure of the arc-shaped gate, and usually only one locking position is provided.

[0004] When the arc gate is in operation, such as flood discharge or flow regulation, the arc working gate maintains different opening degrees (partially open or fully open). Since it has only one locking position, maintaining different opening degrees must rely on hydraulic hoists or fixed winches to continuously maintain the working state.

[0005] Based on the above problems, it is necessary to provide a multi-level locking device for arc-shaped working doors that can be applied to different opening requirements. Utility Model Content

[0006] The technical problem this invention aims to solve is that when an arc gate is under maintenance, it relies entirely on a hydraulic hoist or a fixed winch to maintain its position, resulting in a long equipment load time.

[0007] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a multi-level locking device for an arc-shaped gate, including an arc-shaped gate arranged rotatably in the flow channel, a multi-level locking component provided on the gate pier above the flow channel, and a ratchet and pawl structure that can be locked under various height conditions between the multi-level locking component and the panel of the arc-shaped gate.

[0008] Preferably, the multi-level locking assembly includes a gate support fixed to the gate pier, a rotatable pawl connected to the gate support, and pawls equidistantly arranged on the panel of the arc-shaped gate. One side of the pawl is connected to a rotation drive structure that separates the pawl and the pawls, and the other side of the pawl is connected to an elastic reset structure that is pushed and rotated by the pawls to reset.

[0009] Preferably, the rotation drive structure is a hydraulic cylinder with one end hinged to the gate pier, and the other end of the hydraulic cylinder hinged to the middle of the pawl.

[0010] Preferably, the gate pier is equipped with an infrared sensor and a control unit for recording the number of times the ratchet passes through. The infrared sensor signal is connected to the control unit, and the control unit controls the hydraulic cylinder.

[0011] Preferably, the infrared sensor is located on one side of the gate, and the movable end of the ratchet block sweeps past the infrared sensor before the ratchet block rotates with the gate and passes the pawl.

[0012] Preferably, the elastic reset structure is a tension spring with one end connected to the gate pier support and the other end connected to the pawl.

[0013] Preferably, when the pawl is located between two adjacent pawls, the tension spring is in a stretched state.

[0014] Preferably, a connecting seat is fixedly provided on the gate pier support, an installation shaft is fixedly connected to the rotating end of the pawl, the installation shaft is rotatably mounted on the connecting seat, a connecting ring is fixed on the installation shaft, and the end of the tension spring is fastened to the connecting ring.

[0015] Preferably, the bottom surface of the movable end of the pawl is uniformly provided with scraping grooves.

[0016] Preferably, the slag scraping groove is an inclined groove.

[0017] This utility model provides a multi-level locking device for an arc-shaped gate, which has the following beneficial effects.

[0018] 1. By setting up multi-level locking components on the gate pier above the flow channel and using a ratchet and pawl structure, the arc gate can be locked under various height conditions. This changes the previous method of relying entirely on hydraulic hoists or fixed winches to maintain positioning during maintenance, avoids long-term load on the equipment, and extends the service life of the equipment.

[0019] 2. The pawls in the multi-level locking assembly work together with the pawls arranged at equal intervals on the arc-shaped gate panel to meet the locking requirements of the arc-shaped gate at different opening degrees. This allows the arc-shaped gate to maintain its opening degree without the need for continuous operation of hydraulic hoists or fixed winches during flood discharge or flow regulation, thus improving work efficiency and reducing energy consumption.

[0020] 3. The infrared sensor installed on the gate pier can record the number of times the ratchet passes through and transmit the signal to the control unit. The control unit then controls the action of the hydraulic cylinder, realizing the automated control of locking and unlocking of the arc gate, reducing manual operation and improving the accuracy and safety of operation. Attached Figure Description

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0022] Figure 1 This is a schematic diagram of the arc-shaped gate of this utility model in operation.

[0023] Figure 2 for Figure 1 Enlarged view of section A in the middle.

[0024] Figure 3 for Figure 2 A three-dimensional view.

[0025] In the diagram: 1. Flow channel; 2. Gate pier; 3. Arc gate; 4. Support arm hinge support; 5. Multi-stage locking device; 5.1 Gate pier support; 5.2 Racket block; 5.3 Tension spring; 5.4 Pawl; 5.5 Hydraulic cylinder. Detailed Implementation

[0026] Please see Figure 1 , Figure 2 and Figure 3 This utility model provides a multi-level locking device and method for an arc-shaped gate, including a flow channel 1, a gate pier 2, an arc-shaped gate 3, a support arm hinge support 4, a locking device 5, a gate pier support 5.1, a ratchet block 5.2, a tension spring 5.3, a pawl 5.4, and a hydraulic telescopic rod 5.5.

[0027] like Figure 1 As shown, the arc-shaped gate 3 is installed in the flow channel 1. When it is in the normal water blocking state, it is as shown by the solid line in the figure. When it is in the state of flood discharge or flow regulation, the arc-shaped gate 3 is lifted by the hydraulic hoist, and it rotates around the support arm hinge support 4 and runs to the position shown by the dashed line in the figure.

[0028] like Figure 2 As shown, the multi-stage locking device 5 includes a gate pier support 5.1, a ratchet block 5.2, a tension spring 5.3, a pawl 5.4, and a hydraulic cylinder 5.5. The gate pier support 5.1 is cast into the side of the gate pier 2 using concrete, providing structural support for the multi-stage locking device 5. The ratchet block 5.2 is welded to the panel of the arc-shaped gate 3 and arranged vertically to form a ratchet chain. The pawl 5.4 is installed inside the gate pier support 5.1 and can swing within a certain range around the gate pier support 5.1. One end of the tension spring 5.3 is connected to the gate pier support 5.1, and the other end is connected to the pawl 5.4, as shown in the figure. In its natural state, the pawl 5.4 deflects towards the arc-shaped gate 3 under the tension of the tension spring 5.3. The fixed end of the hydraulic cylinder 5.5 is connected to the gate pier 2. The hydraulic rod is connected to the pawl 5.4 through the lifting head. The hydraulic cylinder 5.5 can extend and retract the hydraulic rod as needed. The pawl 5.4 connected to the hydraulic rod swings around the gate pier support 5.1 under its drive.

[0029] When the arc-shaped gate 3 is in its water-blocking operation, the entire gate body of the arc-shaped gate 3, the flow channel 1, and the gate pier 2 form a sealed space, achieving the purpose of water blocking. During operation such as flow regulation, flood discharge, or maintenance, the arc-shaped gate 3 is lifted to the corresponding height by the hydraulic hoist, and rotates around the support arm hinge 4. During rotation, the ratchet block 5.2 installed on the panel of the arc-shaped gate 3 rotates along with the gate body. Due to the continuous tension of the tension spring 5.3, the pawl 5.4 remains in contact with the upper surface of the ratchet block 5.2. Figure 3 As shown. When the arc gate 3 rotates to a suitable height, the hydraulic hoist stops lifting. Under the action of gravity, the arc gate 3 rotates downward. At this time, the pawl 5.4 is in the concave space formed by the ratchet block 5.2 and the panel of the arc gate 3. The weight of the arc gate 3 is transmitted to the pawl 5.4 through the ratchet block 5.2, and then to the gate support 5.1, so that the arc gate 3 is locked in this position.

[0030] When the operation of diversion, flood discharge, or maintenance is completed, the hydraulic hoist is activated. At this time, the weight of the arc-shaped gate 3 is borne by the hydraulic hoist, the locking device 5 returns to its initial state, and the pawl 5.4, under the action of the tension spring 5.3, is tightly pressed against the upper surface of the ratchet block 5.2. The hydraulic cylinder 5.5 is activated, the hydraulic rod retracts, and the pawl 5.4 connected to the hydraulic rod rotates around the gate pier support 5.1. When it rotates to a suitable height, the pawl 5.4 is no longer in contact with the ratchet block 5.2 and does not affect the rotation of the ratchet block 5.2, thus completing the unlocking. The arc-shaped gate 3 then moves downward under the action of the hydraulic hoist.

[0031] The gate piers 2 on both sides of the arc gate 3 are equipped with multi-level locking devices 5, and the two ends of the panel side of the arc gate 3 are equally equipped with ratchet chains. During the locking process, the weight of the entire arc gate 3 is transferred to the gate pier support 5.1 through the two multi-level locking devices 5 to balance the force.

[0032] As a preferred embodiment of this utility model, the gate pier 2 is equipped with an infrared sensor and a control unit for recording the number of times the ratchet block 5.2 passes through. The infrared sensor signal is connected to the control unit, and the control unit controls the hydraulic cylinder 5.5. The infrared sensor is located on one side of the gate 3, and before the ratchet block 5.2 follows the gate 3 to rotate and passes the pawl 5.4, the movable end of the ratchet block 5.2 sweeps across the infrared sensor.

[0033] When lifting the gate 3, the number of times the ratchet block 5.2 passes through is detected by an infrared sensor to calculate the lifting height of the gate 3. Then, when the gate 3 reaches the set height, the control unit controls the hydraulic cylinder 5.5 to extend, so that the pawl 5.4 rotates between two adjacent ratchet blocks 5.2 to lock the gate 3. Locking the gate 3 by counting in the above way can delay the extension of the pawl 5.4, thereby reducing the wear of the pawl 5.4.

[0034] As a preferred embodiment of this utility model, the bottom surface of the movable end of the pawl 5.4 is uniformly provided with scraping grooves; the scraping grooves are inclined grooves. When the ratchet block 5.2 passes through the pawl 5.4, the bottom surface of the pawl 5.4 will come into contact with the surface of the ratchet block 5.2. The scraping grooves can clean the debris attached to the surface of the pawl 5.2, ensuring the cleanliness of the surface of the ratchet block 5.2 and reducing the load on the hydraulic gate opener; while the inclined groove design of the scraping grooves ensures that the pawl 5.4 has sufficient strength.

Claims

1. A multi-level locking device for an arc-shaped gate, characterized in that: The system includes an arc-shaped gate (3) arranged rotating inside the flow channel (1), a multi-level locking assembly on the gate pier (2) above the flow channel (1), and a ratchet and pawl structure that can be locked under various height conditions between the multi-level locking assembly and the panel of the arc-shaped gate (3).

2. The multi-level locking device for an arc-shaped gate as described in claim 1, characterized in that: The multi-level locking assembly includes a gate support (5.1) fixed on the gate pier (2), a rotatable pawl (5.4) connected to the gate support (5.1), and pawl blocks (5.2) equidistantly arranged on the panel of the arc-shaped gate (3). One side of the pawl (5.4) is connected to a rotation drive structure that separates the pawl (5.4) and the pawl blocks (5.2), and the other side of the pawl (5.4) is connected to an elastic reset structure that is reset after being pushed and rotated by the pawl blocks (5.2).

3. The multi-level locking device for an arc-shaped gate as described in claim 2, characterized in that: The rotation drive structure is a hydraulic cylinder (5.5) with one end hinged to the gate pier (2), and the other end of the hydraulic cylinder (5.5) is hinged to the middle of the pawl (5.4).

4. The multi-level locking device for an arc-shaped gate as described in claim 3, characterized in that: The gate pier (2) is equipped with an infrared sensor and a control unit that record the number of times the ratchet (5.2) passes through. The infrared sensor signal is connected to the control unit, and the control unit controls the hydraulic cylinder (5.5).

5. The multi-level locking device for an arc-shaped gate as described in claim 4, characterized in that: The infrared sensor is located on one side of the gate (3), and before the ratchet block (5.2) rotates with the gate (3) and passes the pawl (5.4), the movable end of the ratchet block (5.2) sweeps across the infrared sensor.

6. The multi-level locking device for an arc-shaped gate as described in claim 2, characterized in that: The elastic reset structure is a tension spring (5.3) with one end connected to the gate support (5.1) and the other end connected to the pawl (5.4).

7. The multi-level locking device for an arc-shaped gate as described in claim 6, characterized in that: When the pawl (5.4) is located between two adjacent pawls (5.2), the tension spring (5.3) is in a stretched state.

8. The multi-level locking device for an arc-shaped gate as described in claim 6, characterized in that: A connecting seat is fixedly installed on the gate support (5.1), and an installation shaft is fixedly connected to the rotating end of the pawl (5.4). The installation shaft is rotatably mounted on the connecting seat, and a connecting ring is fixed on the installation shaft. The end of the tension spring (5.3) is fastened to the connecting ring.

9. The multi-level locking device for an arc-shaped gate as described in claim 2, characterized in that: The bottom surface of the movable end of the pawl (5.4) is uniformly provided with scraping grooves.

10. The multi-level locking device for an arc-shaped gate as described in claim 9, characterized in that: The slag scraper is an inclined groove.

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