Hole hole boring equipment for lifting lug of reverse arc-shaped valve of ship lock and using method

Abstract

The invention provides ship lock reverse arc-shaped valve lifting lug shaft hole boring equipment and a using method. The ship lock reverse arc-shaped valve lifting lug shaft hole boring equipment comprises supporting bearing seats arranged in parallel, the supporting bearing seats are fixedly installed on a combined support, boring rods are installed in the supporting bearing seats in a sliding and rotating mode, tool rests are installed on the boring rods in a matched mode, and tools are installed on the tool rests in a matched mode. An anti-rotation connecting plate is fixedly installed on the outer wall of the supporting bearing seat on one side, and a cutting power device used for driving the boring rod to rotate and conducting cutting is installed on the anti-rotation connecting plate. And a feeding power device for driving the boring rod to feed is mounted at the tail part of the boring rod. According to the device, original-position boring can be achieved under the condition that the reverse radial gate is not disassembled, boring equipment can be conveniently installed on the reverse radial gate, firmness and reliability are achieved, the horizontal and height positions of the boring equipment can be adjusted, and a lifting lug hole damaged due to abrasion and corrosion can be accurately repaired.

Description

Technical Field

[0001] The present invention belongs to the technical field of overhaul of the reverse arc gate of a ship lock, and particularly relates to a boring equipment for the lug shaft hole of a reverse arc valve of a ship lock and a using method thereof. Background Art

[0002] With the rapid development of the Yangtze River shipping, the Three Gorges Ship Lock and the Gezhouba Ship Lock have been operating at a high load all year round. The reverse arc gates are opened and closed frequently. During the operation of the ship lock, if the reverse arc gates malfunction, the reverse arc gates need to be removed at any time and the ship lock operates in a single filling or single discharging mode, which seriously affects the navigation efficiency of the ship lock, causes losses in social and economic benefits. If the ship lock operates in a single filling or single discharging mode for a long time, there are certain safety risks.

[0003] In a high-head ship lock system, the reverse arc gate, as a key water conveyance valve, undertakes the important function of filling and discharging water in the lock chamber. Its design and operation efficiency are directly related to the navigation capacity and structural safety of the ship lock. The role of the reverse arc gate in the ship lock is indispensable. They achieve rapid filling and discharging of water under high head differences to meet the frequent opening and closing requirements of the ship lock. However, the reverse arc gate operates under the condition of opening and closing in moving water. Coupled with the high load operation and frequent opening and closing of the ship lock, the reverse arc gate bears extremely high mechanical stress and hydraulic impact. The combined action of these factors results in an extremely harsh working environment for the reverse arc gate. The failure of the reverse arc gate will not only reduce the navigation efficiency of the ship lock, but may also trigger a chain reaction at the social and economic levels. As an important water transportation hub, the decline in the operation efficiency of the ship lock will directly affect regional logistics and economic activities. In addition, long-term operation in a single filling or single discharging mode may cause irreversible damage to the ship lock structure and increase safety risks.

[0004] During the operation of the reverse arc gate, the contact between the lug shaft hole and the hanging shaft is a key mechanical problem. Under the action of high-speed water flow, the contact points between the hole wall of the lug shaft hole and the hanging shaft will change due to the opening and closing actions, generating strong vibrations and collisions, resulting in structural deformation. Long-term frequent operation causes rust, wear and deformation of the lug shaft hole. These phenomena will lead to an increase in the gap between the lug shaft hole and the hanging shaft. The increase in the gap will weaken the binding force of the lug plate on the hanging shaft, thereby exacerbating the collision and increasing the risk of structural damage or injury. As the gap between the lug plate and the hanging shaft increases, the structural safety of the reverse arc gate is threatened. The increase in the gap may cause the hanging shaft to fall off, which will not only affect the operation safety of the ship lock, but may also force the suspension of navigation for maintenance, thereby seriously affecting the navigation efficiency. Frequent hanging shaft falling-off incidents will further increase the operation risk of the ship lock and may even lead to major safety accidents. The design, maintenance and overhaul of the reverse arc gate are crucial for ensuring the safe and efficient operation of the ship lock. The key lies in improving the durability of the reverse arc gate and reducing the failure rate, which can effectively reduce the safety risks during the operation of the ship lock and ensure the smoothness of water transportation. Summary of the Invention

[0005] In view of the continuous wear and deformation problems of the hanger plate holes of the reverse arc gates of ship locks, the present invention proposes a boring equipment and a using method for the hanger shaft holes of the reverse arc valves of ship locks, ensuring that boring can be achieved in the original position without removing the reverse arc gate. The boring equipment is easy to install on the reverse arc gate, firm and reliable. The horizontal and height positions of the boring equipment are adjustable, and the worn and corroded hanger holes can be accurately repaired. It solves the problem of difficult boring due to the narrow space and shielding restrictions in the original position of the reverse arc gate, and realizes a positioning tooling and process that meets the positioning accuracy requirements.

[0006] In order to achieve the above technical features, the object of the present invention is realized as follows: A boring equipment for the hanger shaft holes of the reverse arc valves of ship locks includes support bearing seats arranged in parallel. The support bearing seats are fixedly installed on a combined bracket. A boring bar is slidably and rotatably installed inside the support bearing seats. A tool holder is fitted on the boring bar, and a cutting tool is fitted on the tool holder. An anti-rotation connecting plate is fixedly installed on the outer wall of one of the support bearing seats, and a cutting power device for driving the boring bar to rotate and perform cutting is installed on the anti-rotation connecting plate; a feed power device for driving the boring bar to feed is installed at the tail of the boring bar.

[0007] Preferably, a flange plate seat is provided on the support bearing seat, and a bearing seat is fitted inside the flange plate seat.

[0008] Preferably, the combined bracket is fixedly welded to the gate body of the arc valve.

[0009] Preferably, the anti-rotation connecting plate is fixedly connected to the corresponding support bearing seat through an anti-rotation bolt assembly.

[0010] Preferably, the cutting power device includes a main shaft servo motor fixed on the outer wall of the anti-rotation connecting plate. The output shaft of the main shaft servo motor is connected to the input shaft of a reduction drive box. The output end of the reduction drive box is connected to the boring bar and controls the boring bar to rotate to drive the cutting tool to perform cutting.

[0011] Preferably, the feed power device includes a feed motor fixed on the outer wall of the anti-rotation connecting plate. A feed screw is installed on the output shaft of the feed motor. A feed nut seat is fitted on the feed screw through screw drive. The other end of the feed nut seat is connected to the tail of the boring bar.

[0012] Preferably, a handwheel is installed at the end of the feed screw.

[0013] Preferably, a plurality of tool holder mounting holes are machined on the boring bar, and the tool holder is fitted at the position where the tool holder mounting holes are located.

[0014] Preferably, during use, the boring bar is arranged coaxially with the hanger shaft hole inside the hanger to be machined.

[0015] On the other hand, the present invention provides a method for using a boring equipment for the lug shaft hole of a reverse arc valve of a ship lock, comprising the following steps: Step 1: Lower the maintenance flat gate, drain the valve well, and remove the movable guide rail; Step 2: Full-weld the combined bracket on the gate body; Step 3: Fix the boring equipment on the combined bracket, measure the level of the boring rod and make corresponding adjustments; Step 4: Align the tool holder with the lug shaft hole, and start the cutting power device of the boring equipment; Step 5: Rotate the handwheel or start the feed motor to drive the feed screw to rotate, drive the feed nut seat through the feed screw, control the feed of the tool holder installed on the boring rod through the feed nut seat, and the tool on the tool holder processes and removes the corroded and damaged parts on the inner surface of the lug shaft hole until the natural color of the parent metal is exposed, and finally perform finish machining; Step 6: After the machining is completed, retract the boring rod outside the lug, and measure the diameter of the lug shaft hole after boring; Install a nested part and a positioning pin that match the original inner diameter size in the repaired lug shaft hole; The geometric dimensions of the lug shaft hole are restored to the design standard; The stress state of the reverse arc gate during opening and closing operation is improved; Step 7: After the repair is completed, remove the entire boring equipment for the repair and use of the next arc valve.

[0016] The present invention has the following beneficial effects: 1. The structural principle of the present invention is clear and simple, easy to install, and easy to repair on site.

[0017] 2. After the repair of the present invention, the parallelism between the axis of the lug hole and the axis of the support hinge is good, reducing the risk of the coupling shaft of the reverse arc gate disengaging and reducing the number of failures of the reverse arc gate.

[0018] 3. The repair work amount of the present invention is small, the construction period is short, and the cost is low.

[0019] 4. Through the layout structure fixedly installed with the gate body, the present invention ensures the coaxiality between the boring rod and the lug shaft hole during the machining process, and thus well ensures the machining accuracy of the lug shaft hole.

[0020] 5. After the repair of the lug hole by the present invention, the stress state of the reverse arc gate during opening and closing operation is improved. It solves the problems of uneven or excessive stress caused by the damage of the lug shaft hole, and reduces the risk of structural damage and failure caused by improper stress.

[0021] 6. The entire boring equipment of the present invention adopts a detachable modular structure design, which can be conveniently disassembled, then transferred for use, and can be reused, reducing the repair construction cost of multiple reverse arc gates of the entire ship lock. Description of the Drawings

[0022] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0023] Figure 1 This is the overall structure diagram of the present invention.

[0024] Figure 2 This is the installation structure diagram of the present invention during use.

[0025] Figure 3 This is the structure diagram of the support bearing seat of the present invention.

[0026] In the figure: support bearing seat 1, boring bar 2, lifting lug 3, lifting lug shaft hole 4, tool rest 5, anti-rotation bolt assembly 6, anti-rotation connecting plate 7, reduction drive box 8, spindle servo motor 9, feed motor 10, feed screw 11, handwheel 12, feed nut seat 13, combined bracket 14, flange seat 15, tool rest mounting hole 16. Specific Embodiment

[0027] The embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0028] Embodiment 1: Refer to Figures 1-3 , a boring equipment for the lifting lug shaft hole of a reverse arc valve of a ship lock, including support bearing seats 1 arranged in parallel. The support bearing seats 1 are fixedly installed on the combined bracket 14. A boring bar 2 is slidably and rotatably installed inside the support bearing seats 1. A tool rest 5 is cooperatively installed on the boring bar 2, and a cutting tool is cooperatively installed on the tool rest 5. An anti-rotation connecting plate 7 is fixedly installed on the outer wall of one of the support bearing seats 1, and a cutting power device for driving the boring bar 2 to rotate and perform cutting is installed on the anti-rotation connecting plate 7; a feed power device for driving the boring bar 2 to feed is installed at the tail of the boring bar 2. By using the equipment of the present invention, it is ensured that boring can be realized in the original position without removing the reverse arc gate. The boring equipment is convenient to be installed on the reverse arc gate, firm and reliable. The horizontal and height positions of the boring equipment are adjustable, and the worn and corroded lifting lug holes can be accurately repaired. It solves the problem that it is difficult to bore holes due to the narrow space and occlusion in the original position of the reverse arc gate, and realizes a positioning tooling and process that meets the positioning accuracy requirements.

[0029] During the specific repair process, the equipment is coaxially installed on the reverse arc gate. Then, the boring bar 2 is driven to rotate by the cutting power device. The tool rest 5 is driven by the boring bar 2, and the cutting tool is driven by the tool rest 5. Furthermore, the cutting tool is cooperated with the lifting lug shaft hole 4, and the worn and corroded parts inside the lifting lug shaft hole 4 are cut, so as to facilitate subsequent repair.

[0030] Further, a flange plate seat 15 is provided on the support bearing seat 1, and a bearing seat is fitted and installed inside the flange plate seat 15. The fitting and installation structure of the flange plate seat 15 as described above ensures the reliability of the installation and positioning of the bearing seat.

[0031] Further, the combined bracket 14 is fixedly welded to the body of the arc-shaped valve. Through the above fixed installation method, during the subsequent boring operation, the coaxial arrangement between the boring bar 2 and the lug shaft hole 4 is ensured, thereby ensuring the repair accuracy of the lug shaft hole 4.

[0032] Further, the anti-rotation connecting plate 7 is fixedly connected to the corresponding side of the support bearing seat 1 through the anti-rotation bolt assembly 6. Through the anti-rotation bolt assembly 6 as described above, the reliable fixed installation of the anti-rotation connecting plate 7 can be realized, thereby ensuring the reliability of its installation and fixation.

[0033] Further, the cutting power device includes a main shaft servo motor 9 fixed on the outer wall of the anti-rotation connecting plate 7. The output shaft of the main shaft servo motor 9 is connected to the input shaft of the reduction drive box 8, and the output end of the reduction drive box 8 is connected to the boring bar 2 and controls the rotation of the boring bar 2 to drive the tool to cut. Through the cutting power device as described above, the subsequent cutting power can be provided. During the working process, the main shaft servo motor 9 drives the reduction drive box 8, the reduction drive box 8 drives the boring bar 2, and then the boring bar 2 drives the tool rest 5, and the tool rest 5 drives the tool to cut the inner wall of the lug shaft hole 4.

[0034] Further, the feed power device includes a feed motor 10 fixed on the outer wall of the anti-rotation connecting plate 7. The output shaft of the feed motor 10 is equipped with a feed screw 11. A feed nut seat 13 is fitted and installed on the feed screw 11 through screw drive, and the other end of the feed nut seat 13 is connected to the tail of the boring bar 2. Through the feed power device as described above, the feed power can be provided. During the working process, the feed motor 10 drives the feed screw 11, the feed screw 11 drives the feed nut seat 13, the feed nut seat 13 drives the boring bar 2 to move axially, and then the boring bar 2 drives the tool rest 5 and the tool to move axially to achieve cutting feed.

[0035] Further, a handwheel 12 is installed at the end of the feed screw 11. The handwheel 12 can serve as a backup purpose. During the feeding process, the feed screw 11 can also be driven manually to achieve feeding.

[0036] Further, a plurality of tool rest mounting holes 16 are machined on the boring bar 2, and the tool rest 5 is fitted and installed at the position where the tool rest mounting holes 16 are located. Through the tool rest mounting holes 16 as described above, it is convenient to adjust the installation position of the tool rest 5, thereby adapting to the repair operations of arc-shaped valves of different sizes and models.

[0037] Furthermore, during use, the boring bar 2 is arranged coaxially with the inner lug shaft hole 4 of the lug 3 to be machined. The above arrangement structure ensures the accuracy of subsequent repair.

[0038] Embodiment 2: A method for using a boring equipment for the lug shaft hole of a reverse arc valve of a ship lock is provided, including the following steps: Step 1: Lower the maintenance flat gate, drain the valve well, and remove the movable guide rail; Step 2: Full-weld the combined support 14 onto the gate body; Step 3: Fix the boring equipment on the combined support 14, measure the levelness of the boring bar 2 and make corresponding adjustments; Step 4: Align the tool holder 5 with the lug shaft hole 4, and start the cutting power device of the boring equipment; Step 5: Rotate the handwheel 12 or start the feed motor 10 to drive the feed screw 11 to rotate. Drive the feed nut seat 13 through the feed screw 11, control the feed of the tool holder 5 installed on the boring bar 2 through the feed nut seat 13. The tool on the tool holder 5 processes and removes the corroded and damaged parts on the inner surface of the lug shaft hole 4 until the color of the parent metal is exposed, and finally finish machining is performed; Step 6: After the machining is completed, retract the boring bar 2 outside the lug 3, and measure the diameter of the lug shaft hole 4 after boring. Install a nested part and a positioning pin that match the original inner diameter size in the repaired lug shaft hole 4; the geometric dimensions of the lug shaft hole are restored to the design standard; the stress state of the reverse arc gate during opening and closing operations is improved; Step 7: After the repair is completed, remove the entire boring equipment for the repair and use of the next arc valve.

Claims

1. A boring equipment for the lug shaft hole of the reverse arc valve of a ship lock, characterized in that, It includes support bearing seats (1) arranged in parallel. The support bearing seats (1) are fixedly installed on the combined support (14). Inside the support bearing seats (1), a boring bar (2) is installed for sliding and rotating. A tool rest (5) is fitted on the boring bar (2), and a cutting tool is fitted on the tool rest (5). On the outer wall of one of the support bearing seats (1), an anti-rotation connecting plate (7) is fixedly installed, and a cutting power device for driving the boring bar (2) to rotate and perform cutting is installed on the anti-rotation connecting plate (7). A feed power device for driving the boring bar (2) to feed is installed at the tail of the boring bar (2).

2. The boring equipment for the lug shaft hole of the reverse arc valve of a ship lock according to claim 1, characterized in that: A flange plate seat (15) is provided on the support bearing seat (1), and a bearing seat is fitted inside the flange plate seat (15).

3. The boring equipment for the lug shaft hole of the reverse arc valve of a ship lock according to claim 1, characterized in that: The combined support (14) is fixedly welded to the door body of the arc-shaped valve by full welding.

4. The boring equipment for the lug shaft hole of the reverse arc valve of a ship lock according to claim 2, characterized in that: The anti-rotation connecting plate (7) is fixedly connected to the corresponding support bearing seat (1) through an anti-rotation bolt assembly (6).

5. The boring equipment for the lug shaft hole of the reverse arc valve of a ship lock according to claim 1, characterized in that: The cutting power device includes a main shaft servo motor (9) fixed on the outer wall of the anti-rotation connecting plate (7). The output shaft of the main shaft servo motor (9) is connected to the input shaft of a reduction transmission box (8). The output end of the reduction transmission box (8) is connected to the boring bar (2) and controls the boring bar (2) to rotate to drive the cutting tool for cutting.

6. The boring equipment for the lug shaft hole of the reverse arc valve of a ship lock according to claim 5, characterized in that: The feed power device includes a feed motor (10) fixed on the outer wall of the anti-rotation connecting plate (7). A feed lead screw (11) is installed on the output shaft of the feed motor (10). A feed nut seat (13) is fitted on the feed lead screw (11) through screw drive. The other end of the feed nut seat (13) is connected to the tail of the boring bar (2).

7. The boring equipment for the lug shaft hole of the reverse arc valve of a ship lock according to claim 6, characterized in that: A handwheel (12) is installed at the end of the feed lead screw (11).

8. The boring equipment for the shaft hole of the lifting lug of the reverse arc valve of a ship lock according to claim 5, characterized in that: A plurality of tool rest mounting holes (16) are machined on the boring bar (2), and the tool rest (5) is fitted at the position where the tool rest mounting holes (16) are located.

9. The boring equipment for the lug shaft hole of the reverse arc valve of a ship lock according to claim 5, characterized in that: During use, the boring bar (2) is arranged coaxially with the inner lug shaft hole (4) of the lug (3) to be machined.

10. A method for using a boring equipment for the lug shaft hole of a reverse arc valve of a ship lock according to any one of claims 6-9, characterized in that It includes the following steps: Step 1: Lower the maintenance flat door, drain the valve well, and remove the movable guide rail. Step 2: Full-weld the combined support (14) on the door body. Step 3: Fix the boring equipment on the combined support (14), measure the level of the boring bar (2) and make corresponding adjustments. Step 4: Align the tool rest (5) with the lug shaft hole (4), and start the cutting power device of the boring equipment. Step 5: Rotate the handwheel (12) or start the feed motor (10) to drive the feed lead screw (11) to rotate. Drive the feed nut seat (13) through the feed lead screw (11). Control the tool rest (5) mounted on the boring bar (2) to feed through the feed nut seat (13). The cutting tool on the tool rest (5) processes and removes the corroded and damaged parts on the inner surface of the lug shaft hole (4) until the base metal color is exposed, and finally perform finish machining. Step 6: After the machining is completed, retract the boring rod (2) outside the lifting lug (3), and measure the diameter of the lifting lug shaft hole (4) after boring; install a nested part and a positioning pin that match the original inner diameter size in the repaired lifting lug shaft hole (4); the geometric dimensions of the lifting lug shaft hole are restored to the design standard; the stress state of the reverse arc gate during opening and closing operations is improved; Step 7: After the repair is completed, remove the entire boring equipment for the repair of the next arc valve.

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