Combined locking device for maintenance of radial gate

Abstract

The utility model discloses a combined locking device under the overhauling state of arc gate relates to gate overhauling technical field, including pier, the gate body is connected through drive assembly on the pier, the locking mechanism for fixing gate body is equipped with on the both sides of pier, the locking mechanism includes support and main shaft, and the main shaft is connected with the support slidingly through fixed component, the both sides beam web of gate body is equipped with the connecting plate, and the connecting plate is installed with the locking seat through fixed bolt, and the support and locking seat are clamped, and the beam web is set up on the clamping groove for the clamping of main shaft one end, the utility model discloses combined locking structure, and the main shaft of locking mechanism and clamping groove clamping realize preliminary locking, and cooperate locking seat and connecting plate bolt fixed formation double locking simultaneously, and the fixed strength and stability of gate body under the overhauling state are improved greatly, and the safety of overhauling operation is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of gate maintenance technology, specifically a combined locking device for an arc-shaped gate under maintenance conditions. Background Technology

[0002] Arc-shaped gates, as core water control equipment in water conservancy and hydropower projects, navigation hubs, and urban flood control, are widely used in key components such as reservoir spillways, lock chambers, and river control gates. Their operational stability directly affects the flood control safety, water resource allocation efficiency, and navigation smoothness of the project. During long-term service, arc-shaped gates are susceptible to deformation, leakage, wear, or functional failure due to factors such as water flow impact, silt abrasion, corrosive media erosion, and structural fatigue. Regular shutdowns and maintenance are necessary to ensure the safe and reliable operation of the equipment.

[0003] The core prerequisite for gate maintenance is ensuring the gate body remains stably locked during maintenance to prevent displacement due to unexpected forces (such as water flow fluctuations or wind) or malfunctions in the drive system, which could lead to safety accidents or hinder maintenance operations. Currently, existing locking devices for arc-shaped gates are mainly divided into two categories: mechanical locking and temporary fixing. Mechanical locking devices often employ single pin, wedge, or bolt-fastening structures. These devices generally suffer from insufficient locking strength and poor adaptability, making them unsuitable for locking large-sized, heavy-load arc-shaped gates. Furthermore, the large gap between the pin and the slot makes them prone to vibration and displacement, resulting in poor locking reliability. Temporary fixing methods typically use wire rope binding and jack support. While simple to operate, these methods lack standardized design, and locking stability relies heavily on operator experience, posing significant safety hazards. Moreover, temporary fixing structures cannot be quickly disassembled, affecting maintenance efficiency. Therefore, those skilled in the art have provided a combined locking device for arc-shaped gates during maintenance to address the problems mentioned in the background. Utility Model Content

[0004] The purpose of this invention is to provide a combined locking device for an arc-shaped gate under maintenance conditions, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A combined locking device for an arc-shaped gate under maintenance includes: A gate pier, on which a gate body is connected via a drive assembly; The gate pier is provided with locking mechanisms on both sides for fixing the gate body. The locking mechanism includes a support and a main shaft. The main shaft is slidably connected to the support through a fixing component. The side beams on both sides of the gate body are provided with connecting plates. The connecting plates are fitted with locking seats by fixing bolts. The support and the locking seats are engaged. The side beam webs are provided with engagement grooves for engaging one end of the main shaft.

[0006] Preferably, the drive assembly includes a hydraulic cylinder and a gate support arm. The gate support arm is disposed on both sides of the gate body and is rotatably connected to the gate pier. The two ends of the hydraulic cylinder are rotatably connected to the gate body and the gate pier, respectively.

[0007] Preferably, the fixing component includes a rotating rod and a connecting rod. One end of the rotating rod is rotatably connected to the support, and one end of the rotating rod is rotatably connected to the connecting rod. The other end of the connecting rod is connected to the main shaft. The support has a sliding groove, and the main shaft is slidably connected in the sliding groove.

[0008] Preferably, one end of the rotating rod is provided with an anti-slip sleeve, and the anti-slip sleeve is provided with anti-slip texture.

[0009] Preferably, a micro switch is installed in the engagement slot, and an indicator light is installed on the support.

[0010] Preferably, an elastic gasket is provided between the locking seat and the connecting plate, and the elastic gasket is made of a corrosion-resistant material.

[0011] Preferably, the surface of the spindle is coated with chrome to form an anti-corrosion layer, and the inner wall of the groove of the support is fitted with a polytetrafluoroethylene wear-resistant bushing.

[0012] Preferably, the support has a groove, and the lower end of the locking seat is engaged in the groove.

[0013] Compared with the prior art, the beneficial effects of this utility model are: This utility model adopts a combined locking structure. The locking mechanism achieves initial locking by engaging the main shaft with the locking groove. At the same time, the locking seat and the connecting plate are fixed with bolts to form a double locking. This greatly improves the fixing strength and stability of the gate body in the maintenance state, effectively avoids the loosening or failure problems that may occur with a single locking structure, and can reliably cope with unexpected loads such as water flow fluctuations and wind force, ensuring the safety of maintenance operations.

[0014] This invention utilizes the linkage between the rotating rod and connecting rod in the fixed assembly to drive the spindle to slide, making operation convenient and labor-saving. Simultaneously, the sliding cooperation between the spindle and the slide groove ensures the accuracy of the locking action. The design, incorporating a microswitch and indicator light, provides intuitive feedback on the spindle's locked position, reducing human error. Furthermore, the wear-resistant and corrosion-resistant layer on the spindle surface and the wear-resistant bushing in the slide groove enhance the device's service life, while the elastic gasket strengthens the sealing and shock resistance of the locking seat connection. The overall structure balances ease of operation, reliability, and durability. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of a combined locking device for an arc-shaped gate under maintenance conditions, as described in an embodiment of this application. Figure 2 This is a schematic cross-sectional view of the gate pier of a combined locking device for an arc-shaped gate under maintenance conditions, as described in an embodiment of this application. Figure 3 This is a cross-sectional view of a combined locking device for an arc-shaped gate under maintenance conditions, as described in an embodiment of this application. Figure 4 for Figure 3 Enlarged view of point A in the middle.

[0016] Figure 5 This is a cross-sectional view of the locking seat of a combined locking device for an arc-shaped gate under maintenance conditions, as described in an embodiment of this application.

[0017] In the diagram: 1. Gate pier; 2. Gate body; 3. Support; 4. Main shaft; 5. Engaging groove; 6. Connecting plate; 7. Fixing bolt; 8. Locking seat; 9. Hydraulic cylinder; 10. Gate support arm; 11. Rotating rod; 12. Connecting rod; 13. Slide groove; 14. Micro switch; 15. Indicator light; 16. Anti-slip sleeve; 17. Elastic gasket; 18. PTFE wear-resistant bushing; 19. Groove; 20. Side beam web. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Please see Figures 1-5 This utility model provides a technical solution: A combined locking device for an arc-shaped gate under maintenance includes: Gate pier 1, gate body 2 is connected to gate pier 1 via a drive assembly. The drive assembly includes a hydraulic cylinder 9 and a gate support arm 10. The gate support arm 10 is located on both sides of the gate body 2 and is rotatably connected to the gate pier 1. The two ends of the hydraulic cylinder 9 are rotatably connected to the gate body 2 and the gate pier 1 respectively. Locking mechanisms for fixing the gate body 2 are provided on both sides of the gate pier 1. The locking mechanism includes a support 3 and a main shaft 4. The main shaft 4 is slidably connected to the support 3 through a fixing component. The support 3 has pre-embedded steel bars in the concrete of the gate pier 1. The fixing component includes a rotating rod 11 and a connecting rod 12. One end of the rotating rod 11 is rotatably connected to the support 3, and one end of the rotating rod 11 is rotatably connected to the connecting rod 12. The other end of the connecting rod 12 is connected to the main shaft 4. A sliding groove 13 is provided on the support 3, and the main shaft 4 is slidably connected in the sliding groove 13. An anti-slip sleeve 16 is provided at one end of the rotating rod 11, and the anti-slip sleeve 16 has anti-slip texture. The gate body 2 is located on both sides. The side beam web 20 is provided with a connecting plate 6. The connecting plate 6 is fitted with a locking seat 8 by fixing bolts 7. The support 3 and the locking seat 8 are engaged. The support 3 has a groove 19. The lower end of the locking seat 8 is engaged in the groove 19. An elastic gasket 17 is provided between the locking seat 8 and the connecting plate 6. The elastic gasket 17 is made of corrosion-resistant material. The side beam web 20 has a locking groove 5 for one end of the main shaft 4 to engage. A micro switch 14 is installed in the locking groove 5. An indicator light 15 is installed on the support 3. The surface of the main shaft 4 is coated with chrome to form an anti-corrosion layer. The inner wall of the slide groove 13 of the support 3 is fitted with a polytetrafluoroethylene wear-resistant bushing 18. When the arc gate needs maintenance, the hydraulic cylinder 9 in the drive assembly is first started through the control system. The two ends of the hydraulic cylinder 9 are rotatably connected to the gate body 2 and the gate pier 1, respectively. With the help of the gate support arms 10 on both sides of the gate body 2 which are rotatably connected to the gate pier 1, the gate body 2 can be driven to rotate around the axis of the gate support arms 10 to the preset maintenance position. After the power is turned off, the gate remains stationary, laying the foundation for subsequent locking operations. At this time, the operator holds the anti-slip sleeve 16 (anti-slip texture enhances grip stability) at the end of the rotating rod 11 in the fixed component and rotates the rotating rod 11 towards the gate. Since the rotating rod 11 is rotatably connected to the support 3 and linked to the main shaft 4 through the connecting rod 12, the connecting rod 12 will drive the main shaft 4 to slide linearly along the slide groove 13 of the support 3 during the rotation until one end of the main shaft 4 is precisely engaged in the engagement groove 5 of the side beam web 20. During this process, the sliding cooperation between the slide groove 13 and the main shaft 4 ensures smooth and jam-free operation. The chrome plating on the surface of the main shaft 4 forms an anti-corrosion layer, and the polytetrafluoroethylene wear-resistant bushing 18 in the slide groove 13 effectively reduces friction loss and improves corrosion resistance, making it suitable for the harsh working conditions of water conservancy projects. When the main shaft 4 is fully engaged, the micro switch 14 in the engagement groove 5 is triggered, and the indicator light 15 on the support 3 lights up, providing intuitive feedback that the initial locking is in place and avoiding errors from manual judgment.

[0020] After initial locking, a secondary reinforcement operation is performed: the lower end of the locking seat 8 is engaged in the groove 19, and then bolts are used to fix the locking seat 8 to the connecting plate 6, so that the locking seat 8 strengthens the fixation between the gate and the gate pier 1 through bolt connection; the corrosion-resistant elastic gasket 17 between the locking seat 8 and the connecting plate 6 is fully fitted during this process, which not only enhances the sealing performance but also buffers vibration and prevents the connection from loosening. Compared with the existing single pin-type or temporary binding device, the double locking structure (main shaft 4 engagement + locking seat 8 fastening) significantly improves the locking strength and can reliably resist unexpected loads such as water flow fluctuations and wind force, fundamentally reducing the safety risks of maintenance, and is especially suitable for large-size, heavy-load arc gates.

[0021] After maintenance, the unlocking process is reversed: first, loosen the fixing bolt 7, remove the locking seat 8 and elastic washer 17, then rotate the rotating rod 11 in the reverse direction, which drives the main shaft 4 out of the engaging groove 5 through the connecting rod 12. The indicator light 15 goes out, indicating that the lock is released. Finally, start the hydraulic cylinder 9 to drive the gate to reset. The entire operation requires no complicated tools. The linkage design of the rotating rod 11 and the connecting rod 12 makes the drive labor-saving and efficient. The standardized structure reduces the dependence on the operator's experience and greatly improves the work efficiency.

[0022] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A combined locking device for an arc-shaped gate under maintenance conditions, characterized in that, include: Gate pier (1), on which a gate body (2) is connected via a drive assembly; The gate pier (1) is provided with locking mechanisms on both sides for fixing the gate body (2). The locking mechanism includes a support (3) and a main shaft (4). The main shaft (4) is slidably connected to the support (3) through a fixing component. The gate body (2) has connecting plates (6) on the side beam webs (20) on both sides. The connecting plates (6) are fitted with locking seats (8) by fixing bolts (7). The support (3) and the locking seats (8) are engaged. The side beam webs (20) are provided with engaging grooves (5) for engaging one end of the main shaft (4).

2. The combined locking device for an arc-shaped gate under maintenance conditions according to claim 1, characterized in that: The drive assembly includes a hydraulic cylinder (9) and a gate support arm (10). The gate support arm (10) is connected to the gate body (2) and is rotatably connected to the gate pier (1). The two ends of the hydraulic cylinder (9) are rotatably connected to the gate body (2) and the gate pier (1) respectively.

3. The combined locking device for an arc-shaped gate under maintenance conditions according to claim 1, characterized in that: The fixing assembly includes a rotating rod (11) and a connecting rod (12). One end of the rotating rod (11) is rotatably connected to the support (3), and one end of the rotating rod (11) is rotatably connected to the connecting rod (12). The other end of the connecting rod (12) is connected to the main shaft (4). The support (3) is provided with a sliding groove (13), and the main shaft (4) is slidably connected in the sliding groove (13).

4. The combined locking device for an arc-shaped gate under maintenance conditions according to claim 3, characterized in that: One end of the rotating rod (11) is provided with an anti-slip sleeve (16), and the anti-slip sleeve (16) is provided with anti-slip texture.

5. The combined locking device for an arc-shaped gate under maintenance conditions according to claim 1, characterized in that: A micro switch (14) is installed in the engagement groove (5), and an indicator light (15) is installed on the support (3).

6. The combined locking device for an arc-shaped gate under maintenance conditions according to claim 1, characterized in that: An elastic gasket (17) is provided between the locking seat (8) and the connecting plate (6), and the elastic gasket (17) is made of corrosion-resistant material.

7. A combined locking device for an arc-shaped gate under maintenance conditions according to claim 3, characterized in that: The surface of the main shaft (4) is coated with chrome to form an anti-corrosion layer, and the inner wall of the groove (13) of the support (3) is fitted with a polytetrafluoroethylene wear-resistant bushing (18).

8. The combined locking device for an arc-shaped gate under maintenance conditions according to claim 1, characterized in that: The support (3) has a groove (19) and the lower end of the locking seat (8) is engaged in the groove (19).

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