A one-way automatic cutting valve weld method and a one-way automatic cutting valve weld device

Abstract

A one-way automatic cutting valve weld method and a one-way automatic cutting valve weld device, comprising the following steps: S1 unlocking the safety mechanism; S2 adjusting the cutting height of the automatic lifting mechanism; S3 clamping the valve by the clamping mechanism; S4 cutting the valve weld by the ratchet automatic cutting mechanism, including a machine base, one side of the machine base is connected with an automatic lifting mechanism, the machine base is provided with an electric drive mechanism for changing the direction of movement and a clamping mechanism for clamping the valve, and the electric drive mechanism is connected and provides power for the ratchet automatic cutting mechanism for automatically cutting the valve weld. The device adopts the working method of the ratchet mechanism, realizes one-way cutting of the valve weld, uses the electric drive mechanism to drive the ratchet wrench to continuously rotate within a certain angle to realize automatic cutting of the cutting tool on the sealing valve weld, and greatly reduces the time when the artificial needs to be in the high-concentration nuclear radiation during cutting.

Description

Technical Field

[0001] This invention relates to the field of nuclear industry maintenance technology, and in particular to a method and device for unidirectional automatic cutting of valve welds. Background Technology

[0002] Pipeline valves are a crucial component of equipment transporting gas and liquids. Nuclear power plants utilize a vast number of valves, making all systems inextricably linked to them. Since the liquids in pipelines are typically highly radioactive and corrosive, ensuring leak-proof pipeline valves is paramount. In nuclear power plant valves, a ring-shaped sealing weld is usually welded between the valve cover and body to prevent radioactive fluids from leaking through the gap between them. Current technology uses a handle to drive a pawl, which in turn rotates a ratchet wheel at a constant speed, enabling the cutting assembly to cut the workpiece circumferentially at a uniform speed. However, this method involves manual cutting, and prolonged exposure to high radiation concentrations during this process can be harmful to human health. Summary of the Invention

[0003] To overcome the problem of prolonged exposure to high concentrations of nuclear radiation caused by the aforementioned manual cutting method, the technical problem to be solved by this invention is to provide a one-way automatic valve weld cutting method and a one-way automatic valve weld cutting device. This invention is achieved by the following technical solution:

[0004] A method for unidirectional automatic cutting of valve weld seams includes the following steps:

[0005] S1: Unlock the security insurance institution;

[0006] S2: Automatic lifting mechanism adjusts the cutting height;

[0007] S3: Clamping mechanism clamps the valve;

[0008] S4: Ratchet automatic cutting mechanism cuts valve weld seams.

[0009] As described above, in a one-way automatic valve weld cutting method, rotating the safety pull ring causes the safety bolt to rotate away from the second ratchet teeth, thereby releasing the safety bolt from restricting the rotation of the ratchet rotating disk.

[0010] As described above, in a one-way automatic valve weld cutting method, when the height of the ratchet automatic cutting mechanism needs to be increased, the drive motor rotates in the first direction, and the second helical gear connected to the drive motor meshes with the first helical gear and rotates. When the first helical gear rotates, it drives the second lifting column to rise. When the height of the ratchet automatic cutting mechanism needs to be decreased, the drive motor rotates in the second direction, and the second helical gear connected to the drive motor meshes with the first helical gear and rotates. When the first helical gear rotates, it drives the second lifting column to fall.

[0011] As described above, in a one-way automatic valve weld cutting method, the rotating adjustment mechanism causes the rear end of the clamping module to move closer to the valve, the rear end of the clamping module pushes the first clamping module to move towards the center of the valve, and the second clamping module moves closer to the valve from both sides, so that the clamping mechanism clamps the valve weld together from three positions.

[0012] In the unidirectional automatic valve weld cutting method described above, when the second drive motor rotates, it drives the first bevel gear to rotate. At the same time, the first bevel gear meshes with the second bevel gear, causing the second bevel gear to rotate. The first spur gear follows the second bevel gear in rotation. The meshing of the first spur gear with the second spur gear causes the first spur gear to drive the second spur gear to rotate. One end of the connecting rod is connected to the second spur gear, and the end away from the second spur gear is connected to the slider. The second spur gear, the connecting rod, and the slider form a crank-slider mechanism, causing the slider to swing within the arc-shaped groove.

[0013] As described above, in a one-way automatic valve weld cutting method, the ratchet wrench engages with the ratchet rotating disk in a first rotation direction, causing the ratchet rotating disk to swing with the ratchet wrench. The tool feed mechanism in the ratchet rotating disk cuts the valve weld. After the ratchet wrench rotates to its limit position in the first direction, it rotates in a second direction, and the ratchet rotating disk disengages from the ratchet wrench, stopping the ratchet rotating disk from rotating. Steps S51 to S53 are repeated until the valve weld cutting is completed.

[0014] A one-way automatic valve weld cutting device includes a machine base, an automatic lifting mechanism connected to one side of the machine base, an electric drive mechanism for changing the direction of movement and a clamping mechanism for clamping the valve on the machine base, and a ratchet automatic cutting mechanism connected to and providing power for automatically cutting the valve weld of the electric drive mechanism.

[0015] As described above, a one-way automatic valve weld cutting device includes a ratchet automatic cutting mechanism comprising a ratchet rotation mechanism for one-way rotation, a tool feed mechanism for feeding and cutting the valve weld on the ratchet rotation mechanism, a ratchet wrench for connecting to an electric drive mechanism for swinging motion, a ratchet rotating disk for loading the tool feed mechanism for one-way rotation on the ratchet wrench, a ratchet base for restricting the rotation of the ratchet rotating disk together with the ratchet wrench on the outer periphery of the ratchet rotating disk, a groove for connecting to the electric drive mechanism on the ratchet wrench, a first ratchet tooth at the end of the ratchet wrench near the valve for driving the tool feed mechanism to rotate unidirectionally, the first ratchet tooth forming an opening in the ratchet wrench that allows the valve to enter the ratchet wrench, a second ratchet tooth on the ratchet base, a safety mechanism to prevent accidental activation of the device on one side of the second ratchet tooth, the safety mechanism including a safety locking element for locking the movement of the ratchet wrench, and a safety pull ring connected to the safety locking element for easy rotation of the safety locking element.

[0016] As described above, a unidirectional automatic valve weld cutting device includes a ratchet rotating disk comprising a first rotating disk and a second rotating disk for easy disassembly and installation of cutting components. A pawl mechanism is provided between the first and second rotating disks for engaging a ratchet wrench in a first rotational direction, causing the tool feed mechanism on the ratchet rotating disk to rotate unidirectionally, and disengaging from the ratchet wrench in a second rotational direction, causing the tool feed mechanism on the ratchet rotating disk to stop rotating. The pawl mechanism includes a first pawl for engaging a first ratchet tooth in the first rotational direction, causing the ratchet wrench to drive the ratchet rotating disk to rotate, and disengaging from the first ratchet tooth in the second rotational direction, causing the ratchet rotating disk to stop rotating. A second pawl is provided on one side of the first pawl to lock the rotation of the ratchet rotating disk when it stops. A plurality of fasteners are provided between the first and second rotating disks for connecting them.

[0017] As described above, in a one-way automatic valve weld cutting device, the tool feeding mechanism includes a cutting tool mounted in a ratchet rotating disc for feeding and cutting. The cutting tool is connected to a cutting tool mounting base for loading the cutting tool feed, and a cutting tool adjusting element for adjusting the cutting tool feed amount is connected to the cutting tool mounting base.

[0018] Compared with the prior art, the present invention has the following advantages:

[0019] 1. This device uses a ratchet mechanism to achieve unidirectional cutting of valve welds. An electric drive mechanism drives the ratchet wrench to rotate continuously within a certain angle, enabling the cutter to automatically cut the weld of the sealed valve. This significantly reduces the time that manual workers need to be exposed to high concentrations of nuclear radiation during cutting. The device can complete the cutting task autonomously, improving work efficiency and safety.

[0020] 2. This device enables automatic unidirectional cutting. Unidirectional cutting reduces friction and vibration during retraction, which helps improve cutting accuracy. Because the tool does not participate in cutting during retraction, no additional cutting force is introduced, thereby reducing the risk of workpiece deformation.

[0021] 3. This device utilizes an automatic lifting platform control system, which can flexibly achieve positioning and cutting of nuclear power valves at different heights and positions. The electric drive device adopts bevel gear transmission, which can withstand large loads, achieve large power output, improve drive stability, and reduce the impact of harmful vibrations on cutting accuracy. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0023] Figure 1 This is a schematic diagram of a one-way automatic valve weld cutting method according to the present invention. Figure 1 ;

[0024] Figure 2 This is a three-dimensional schematic diagram of a unidirectional automatic valve weld cutting device according to the present invention. Figure 2 ;

[0025] Figure 3 A front view schematic diagram of a one-way automatic valve weld cutting device according to the present invention. Figure 3 ;

[0026] Figure 4 This is a schematic diagram of a ratchet automatic cutting mechanism for a unidirectional automatic valve weld cutting device according to the present invention. Figure 4 ;

[0027] Figure 5 This is a schematic diagram of a ratchet automatic cutting mechanism for a unidirectional automatic valve weld cutting device according to the present invention. Figure 5 ;

[0028] Figure 6 An exploded view of the ratchet rotating disc of a one-way automatic valve weld cutting device according to the present invention. Figure 6 ;

[0029] Figure 7 An exploded view of the ratchet rotating disc of a one-way automatic valve weld cutting device according to the present invention. Figure 7 ;

[0030] Figure 8 This is a schematic diagram of a ratchet wrench for a one-way automatic valve weld cutting device according to the present invention. Figure 8 ;

[0031] Figure 9 This is a schematic diagram of a ratchet base for a one-way automatic valve weld cutting device according to the present invention. Figure 9 ;

[0032] Figure 10 This is a schematic diagram of a clamping mechanism for a one-way automatic valve weld cutting device according to the present invention. Figure 10 ;

[0033] Figure 11 This is a schematic diagram of an electric drive mechanism for a unidirectional automatic valve weld cutting device according to the present invention. Figure 10 one;

[0034] Figure 12 This is a schematic diagram of the internal structure of the electric drive mechanism of a one-way automatic valve weld cutting device according to the present invention. Figure 10 two;

[0035] Figure 13 This is a schematic diagram of the internal structure of the automatic lifting mechanism of a one-way automatic valve weld cutting device according to the present invention. Figure 10 three.

[0036] Figure 14 This is a schematic diagram of the interior of the rotating disc of a one-way automatic valve weld cutting device according to the present invention. Figure 10 Four. Detailed Implementation

[0037] To make the technical problems solved by this application, the technical solutions, and the beneficial effects clearer, this application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to limit this application.

[0038] Please see Figures 1 to 12A one-way automatic valve weld cutting device includes a machine base 2. An automatic lifting mechanism 1 for adjusting the device height is connected to one side of the machine base 2. The machine base 2 is equipped with an electric drive mechanism 3 for changing the direction of movement and a clamping mechanism 41 for clamping the valve. The electric drive mechanism 3 is connected to and provides power to a ratchet automatic cutting mechanism 4 for automatically cutting the valve weld. This device achieves automated control through the automatic lifting mechanism and the electric drive mechanism, reducing manpower requirements, lowering the labor intensity of workers, and improving production efficiency. Automated operation can provide more stable cutting parameters, such as cutting speed, depth, and angle, thereby ensuring smooth cutting edges and accurate dimensions, reducing the need for subsequent processing. The adjustability of the cutting height and rotation direction means that the device can adapt to valves of different sizes and shapes, increasing its flexibility in different application scenarios. Due to the modular design, such as the automatic lifting mechanism and the ratchet automatic cutting mechanism, it can be independently maintained and upgraded, extending the service life of the entire device.

[0039] Furthermore, as a preferred embodiment of this solution and not a limitation, the ratchet automatic cutting mechanism 4 includes a ratchet rotation mechanism 42 for unidirectional rotation, and a tool feed mechanism 43 for feeding and cutting the valve weld seam is provided on the ratchet rotation mechanism 42. The ratchet mechanism can provide precise intermittent motion, ensuring the stability and accuracy of the tool during the cutting process and avoiding deviations that may be caused by continuous rotation. The clamping mechanism ensures that the valve is firmly fixed during the cutting process, preventing movement caused by vibration or cutting force, thereby ensuring cutting quality and safety. The tool feed mechanism can precisely control the feed amount of the tool, avoiding over-cutting or under-cutting, ensuring consistent cutting depth, and reducing the need for subsequent processing. The automation characteristics of the entire ratchet automatic cutting mechanism reduce manual intervention by the operator, simplify the operation process, and reduce the difficulty of operation and error rate.

[0040] Furthermore, as a preferred embodiment of this solution and not a limitation thereof, the clamping mechanism 41 includes a first clamping module 411 for pushing and clamping the valve in the middle and a second clamping module 412 for clamping the valve on both sides. The first clamping module 411 and the second clamping module 412 are connected to each other at the end away from the valve to form a clamping module rear end 413. The clamping module rear end 413 is provided with a clamping module groove 4120 for the second clamping module 412 to move. The clamping module rear end 413 is provided with an adjusting bolt 414 for adjusting the moving position of the first clamping module 411 and the second clamping module 412 to clamp the valve. The first clamping module consists of two cylindrical push rods, and the second clamping module consists of two arc-shaped push rods. The first clamping module pushes from the middle, while the second clamping module clamps from both sides, forming a three-dimensional fixed frame to ensure that the valve will not shift during the cutting process. The positions of the first and second clamping modules can be finely adjusted by adjusting bolts, allowing the clamping mechanism to adapt to valves of different sizes and shapes, thus enhancing versatility. The design of the cylindrical push rod and the arc-shaped push rod maximizes the contact area and distributes pressure evenly, avoiding valve deformation or damage caused by excessive local stress.

[0041] Furthermore, as a preferred embodiment of this solution and not a limitation, the ratchet rotation mechanism 42 includes a ratchet wrench 421 for connecting to the electric drive mechanism 3 to perform oscillating motion. The ratchet wrench 421 has a groove 4211 for connecting to the electric drive mechanism. At the end near the valve, the ratchet wrench 421 has a first ratchet tooth 4212 that drives the tool feed mechanism 43 to rotate unidirectionally, and a ratchet wrench opening 4213 that facilitates the valve entering the ratchet wrench 421. Powered by the electric drive mechanism, the ratchet wrench can perform oscillating motion, and in a specific direction, intermittent unidirectional rotation is achieved through the ratchet mechanism. This design allows the tool to advance in only one direction during cutting, and not cut during the return stroke, thus reducing tool wear and improving cutting efficiency.

[0042] Furthermore, as a preferred embodiment of this solution and not a limitation, the ratchet rotation mechanism 42 further includes a ratchet rotating disk 422 for rotating the tool feed mechanism 43. The ratchet rotating disk 422 includes a first rotating disk 4221 and a second rotating disk 4222 for easy disassembly and installation of cutting components. A mechanism is provided between the first rotating disk 4221 and the second rotating disk 4222 for engaging the ratchet wrench 421 in a first rotation direction, causing the tool feed mechanism 43 on the ratchet rotating disk 422 to rotate unidirectionally, and disengaging from the ratchet wrench 421 in a second rotation direction, causing the tool feed mechanism 43 on the ratchet rotating disk 422 to rotate unidirectionally. The pawl mechanism 4220 of the structure 43 stops rotating. In the first rotation direction, it engages with the first ratchet tooth 4212, causing the ratchet wrench 421 to drive the ratchet rotating disk 422 to rotate. In the second rotation direction, it disengages from the first ratchet tooth 4212, causing the ratchet rotating disk 422 to stop rotating. A second pawl 4229 is provided on one side of the first pawl 4228 to lock the rotation of the ratchet rotating disk 422 when it stops. A plurality of fasteners 4227 are provided between the first rotating disk 4221 and the second rotating disk 4222 for connecting the first rotating disk 4221 and the second rotating disk 4222. The first pawl 4228 is connected to a pawl post 4225 for adjusting the position of the first pawl 4228. The outer periphery of the pawl post 4225 is provided with a pawl post groove 4226 on the first rotating disk 4221. The first pawl 4228 has a first mounting hole 4331 for mounting an elastic member, and the second pawl 4229 has a second mounting hole 4332 for mounting an elastic member. A plurality of joints are provided between the first rotating disk 4221 and the second rotating disk 4222 for connecting the two disks. Fastener 4227, which is a screw, is provided on the first rotating disk 4221. The first rotating disk 4221 is provided with a pawl groove 4251 for accommodating and positioning the pawl mechanism 4220 and a tool groove 4261 for accommodating and positioning the tool feed mechanism 43. The pawl engages the ratchet in the first rotation direction, so that the tool feed mechanism can only rotate in a predetermined direction. Preferably, the first rotation direction is clockwise and the second rotation is counterclockwise, so as to realize unidirectional cutting. The design of the first rotating disk and the second rotating disk facilitates the disassembly and installation of the cutting components, and the replacement and maintenance of the tool becomes faster.

[0043] Furthermore, as a preferred embodiment of this solution and not a limitation, the outer periphery of the ratchet rotating disk 422 is provided with a ratchet base 423 for mounting the ratchet rotating disk 422 together with the ratchet wrench 421. The ratchet base 423 is provided with a second ratchet tooth 4232 of the same specification as the first ratchet tooth 4212 on the ratchet wrench 421, so that they jointly engage the pawl 4220 in the first rotation direction for rotational cutting. The ratchet base 423 is provided with a safety mechanism 4233 to prevent self-starting when not in use. The safety mechanism 4233 includes a mechanism for locking the ratchet wrench. The first ratchet tooth 4212 on the hand 421 moves the safety bolt 4234, which is connected to a safety pull ring 4235 to facilitate the rotation of the safety bolt 4234. The second ratchet tooth on the ratchet base matches the first ratchet tooth on the ratchet wrench, ensuring that both engage the pawl synchronously in the first rotation direction and perform rotational cutting together. This design improves the synchronization of rotation and the accuracy of cutting. The safety mechanism improves operational safety by locking the first ratchet tooth on the ratchet wrench, preventing accidental activation of the equipment when not in use or during transportation, and reducing potential injury risks.

[0044] Furthermore, as a preferred embodiment of this solution and not a limitation, the tool feed mechanism 43 includes a cutting blade 431 for feeding and cutting. The cutting blade 431 is connected to a cutting blade mounting seat 432 that loads the cutting blade 431 for feeding and is mounted in a ratchet rotating disc 422. The cutting blade mounting seat 432 is connected to a cutting blade adjusting member 433 for adjusting the feed amount of the cutting blade 431. The cutting blade adjusting member is a cutting blade bolt. The adjustment function of the cutting blade bolt allows the operator to precisely control the feed amount of the cutting blade, i.e., the cutting depth, ensuring accuracy and consistency in the cutting process and avoiding over-cutting or under-cutting.

[0045] Furthermore, as a preferred embodiment of this solution and not a limitation, the automatic lifting mechanism 1 includes a retractable lifting column 11. The lifting column 11 includes a first lifting column 111 fixedly installed at the lower part and a second lifting column 112 retractable into the first lifting column 111. A first helical gear 114 for raising or lowering the second lifting column 112 is provided between the first lifting column 111 and the second lifting column 112. The first lifting column 111 has a lifting column base 115 for mounting a driving component at one end near the first helical gear 114. The lifting column base 115 is provided with a motor 116 for driving the second lifting column 112 to rise and fall. A main shaft 117 for transmitting rotational motion is connected to the drive motor 116. The main shaft 117 is connected to a second helical gear 118 that meshes with the first helical gear 114. The second lifting column 112 has a spiral worm gear structure so that the second lifting column can be raised or lowered when the first helical gear rotates. The use of the second lifting column of the spiral worm gear structure in conjunction with the first and second helical gears allows for precise control of the lifting motion, achieving smooth and accurate height adjustment. The spiral worm gear structure has high self-locking performance, which means that the lifting column can remain in the designated position even without power, making it suitable for carrying heavy objects. The helical gear transmission between the first and second lifting columns provides high torque transmission efficiency, ensuring the stability and reliability of the lifting motion.

[0046] Furthermore, as a preferred embodiment of this solution and not a limitation, the electric drive mechanism 3 includes an electric drive housing 31. Inside the electric drive housing 31 is a second drive motor 32 for driving the component to rotate. The second drive motor 32 is connected to a first bevel gear 34 that rotates. The first bevel gear 34 meshes with a second bevel gear 35 at a 90-degree angle. The second bevel gear 35 is connected to a first spur gear 37 exposed on the electric drive housing 31. The first spur gear 37 meshes with a second spur gear 38. A connecting rod 39 is connected at both ends between the second spur gear 38 and the ratchet wrench, for causing the ratchet wrench 421 to swing when the second spur gear 38 rotates. A slider 311 is connected to one end of the connecting rod 39 near the ratchet wrench 421. The slider 311 is installed in an arc-shaped groove 310 provided in the electric drive housing 31 and swings. The power generated by the second drive motor is efficiently converted into rotational motion through the 90-degree meshing of the first and second bevel gears, reducing energy loss. The engagement of the second bevel gear with the first spur gear changes the direction of power, allowing the rotational motion to be output along a direction perpendicular to the motor shaft, increasing the flexibility of the mechanism's layout. The combination of the connecting rod and the slider ensures the smoothness of the swing motion, reducing vibration and noise during the motion process. The arc-shaped groove design allows the slider to swing freely within a certain range, which can adapt to swing requirements of different amplitudes and improve the adaptability of the electric drive mechanism.

[0047] A method for unidirectional automatic cutting of valve weld seams includes the following four steps: S1 is unlocking, unlocking the safety mechanism 4233 to ensure that the ratchet rotating disk 422 can rotate; S2 is adjusting the cutting height of the automatic lifting mechanism 1, which automatically adjusts to the corresponding position according to the position of the valve weld seam; after the automatic lifting mechanism completes the adjustment, S3 is clamping the valve weld seam from the middle and both sides to keep the valve stable during cutting; after clamping, S4 is rotating the electric drive mechanism 3, which drives the connecting rod and slider to swing through the motor rotation, providing a power source for the ratchet automatic cutting mechanism 4; S5 is the ratchet automatic cutting mechanism 4 cutting the valve weld seam. The ratchet wrench 421 swings back and forth in the first rotation direction and the second rotation direction under the drive of the electric drive mechanism 3. The ratchet wrench 421 engages with the ratchet rotating disk 422 in the first rotation direction and rotates together. The tool feed mechanism 43 in the ratchet rotating disk 422 cuts the valve weld seam. In step S1, unlocking the safety mechanism 4233 ensures that the cutting process can be started when the device is ready, reducing the risk of accidental start-up. The device can adjust the cutting position according to the size and shape of various valves, and has good adaptability. The ratchet automatic cutting mechanism 4 adopts an efficient swing mode to improve work efficiency.

[0048] Step S1 includes the following specific steps: S11 Rotate the safety pull ring 4235, which drives the safety bolt 4234 to rotate away from the second ratchet tooth 4232, thereby releasing the safety bolt 4234 from restricting the rotation of the ratchet rotating disk 422. The operator can directly observe the position of the safety pull ring 4235 to determine whether it has been unlocked, which makes the operation more intuitive and simple.

[0049] Step S2 includes the following specific steps: S21 When the height of the device needs to be increased, the drive motor 116 rotates in the first direction, and the second helical gear 118 connected to the drive motor 116 meshes with the first helical gear 114 and rotates. When the first helical gear 114 rotates, it drives the second lifting column 111 to rise. When the height of the device needs to be decreased, the drive motor 116 rotates in the second direction, and the second helical gear 118 connected to the drive motor 116 meshes with the first helical gear 114 and rotates. When the first helical gear 114 rotates, it drives the second lifting column 111 to fall. The automatic lifting mechanism achieves precise, smooth, and reliable lifting control through the drive motor 116 and the helical gear transmission system. It also has bidirectional control function, is easy to maintain, saves space, and has low energy consumption.

[0050] Step S3 includes the following specific steps: S31, rotating the adjusting mechanism 414 causes the rear end 413 of the clamping module to move closer to the valve; the rear end 413 of the clamping module pushes the first clamping module 411 to move towards the center of the valve; and the second clamping module 412 moves closer to the valve from both sides, so that the clamping mechanism 41 clamps the valve weld from three positions. Multi-point clamping can evenly distribute the force, avoiding deformation or damage caused by excessive local force. This clamping mechanism can adapt to valves of various sizes and shapes.

[0051] Step S4 includes the following specific steps: S41 When the second drive motor 32 rotates, it drives the first bevel gear 34 to rotate. At the same time, the first bevel gear 34 meshes with the second bevel gear 35, causing the second bevel gear 35 to rotate. The first cylindrical spur gear 37 follows the second bevel gear 35 to rotate. The first cylindrical spur gear 37 meshes with the second cylindrical spur gear 38, causing the first cylindrical spur gear 37 to drive the second cylindrical spur gear 38 to rotate. S42 Connect one end of the connecting rod 39 to the second cylindrical spur gear 38 and the other end away from the second cylindrical spur gear 38 to the slider 311. The second cylindrical spur gear 38, the connecting rod 39 and the slider 311 form a crank-slider mechanism, causing the slider 311 to swing within the arc-shaped groove 310. The second drive motor 32 effectively converts the rotational motion of the motor into subsequent linear or oscillating motion through a combination of bevel gears and spur gears. The combination of bevel gears and spur gears has a compact structure, saves space, and is suitable for applications in limited spaces. Through the combination of connecting rod 39 and slider 311, a large range of oscillating motion can be achieved. By adjusting the length of connecting rod 39 and the position of slider 311, the oscillation amplitude and frequency during the cutting process can be adjusted.

[0052] Step S5 includes the following specific steps: S51 The ratchet wrench 421 engages with the ratchet rotating disk 422 in the first rotation direction, causing the ratchet rotating disk 422 to swing with the ratchet wrench 421. S52 The tool feed mechanism 43 in the ratchet rotating disk 422 cuts the valve weld. S53 After the ratchet wrench 421 rotates to its limit position in the first direction, it rotates in the second direction, and the ratchet rotating disk 422 disengages from the ratchet wrench 421, stopping its rotation. S54 Steps S51 to S53 are repeated until the valve weld cutting is completed. Through the precise cooperation between the ratchet wrench 421 and the ratchet rotating disk 422, precise cutting control can be achieved. The tool feed mechanism 43 continuously cuts the valve weld as the ratchet rotating disk 422 rotates, achieving a continuous cutting process. Steps S51 to S53 are repeated until the valve weld cutting is completed, ensuring the consistency and repeatability of the cutting process.

[0053] The working principle of this embodiment is as follows:

[0054] A method and device for unidirectional automatic valve weld cutting involves the following steps: First, the safety mechanism is unlocked. Then, the motor in the automatic lifting mechanism drives the first helical gear to rotate. The first helical gear meshes with the second helical gear, which in turn drives the second lifting column to rise or fall to a suitable height for cutting. The adjusting bolt in the clamping mechanism is rotated to clamp the valve from the center with two cylindrical push rods and from both sides with two arc-shaped push rods. After clamping, the drive motor in the second electric drive mechanism rotates, driving the first bevel gear. The first bevel gear drives the first cylindrical spur gear, which in turn drives the second cylindrical spur gear. The wheel drives the connecting rod and slider to perform a crank-slider motion. The ratchet wrench oscillates under the action of the connecting rod and slider. When rotating clockwise, the pawl engages the first and second ratchet teeth, causing the ratchet rotating disk and the ratchet wrench to rotate together. The tool feed mechanism follows the rotation of the ratchet rotating disk and cuts the valve weld. The feed amount of the tool can be adjusted by manually or electrically rotating the cutting bolt. When the ratchet wrench rotates counterclockwise, the pawl moves away from the first and second ratchet teeth, causing the ratchet rotating disk to stop rotating, while the ratchet wrench rotates counterclockwise. When it reaches the limit position, the ratchet wrench rotates clockwise again, repeating the previous motion to cut the weld until the valve weld is completely cut.

[0055] The above are implementation methods provided in conjunction with specific content, and it is not intended that the specific implementation of this application is limited to these descriptions. Any methods or structures that are similar to those of this application, or any technical deductions or substitutions made based on the concept of this application, should be considered within the scope of protection of this application.

Claims

1. A method for unidirectional automatic cutting of valve weld seams, characterized in that, Includes the following steps: S1: Unlock the security insurance agency (4233); S2: Automatic lifting mechanism (1) adjusts the cutting height; S3: Clamping mechanism (41) clamps the valve; S4: Ratchet automatic cutting mechanism (4) cuts valve welds; Step S2 includes the following specific steps: S21: When it is necessary to raise the height of the ratchet automatic cutting mechanism (4), the drive motor (116) rotates from the first rotation direction, and the second helical gear (118) connected to the drive motor (116) meshes with the first helical gear (114) and rotates. When the first helical gear (114) rotates, it drives the second lifting column (111) to rise. When it is necessary to lower the height of the ratchet automatic cutting mechanism (4), the drive motor (116) rotates from the second rotation direction, and the second helical gear (118) connected to the drive motor (116) meshes with the first helical gear (114) and rotates. When the first helical gear (114) rotates, it drives the second lifting column (111) to fall. Step S4 includes the following specific steps: S41: When the second drive motor (32) rotates, it drives the first bevel gear (34) to rotate. At the same time, the first bevel gear (34) meshes with the second bevel gear (35) to make the second bevel gear (35) rotate. The first cylindrical spur gear (37) follows the second bevel gear (35) to rotate. The first cylindrical spur gear (37) meshes with the second cylindrical spur gear (38) to make the first cylindrical spur gear (37) drive the second cylindrical spur gear (38) to rotate. S42: Connect one end of the connecting rod (39) to the second cylindrical spur gear (38) and connect the other end away from the second cylindrical spur gear (38) to the slider (311). The second cylindrical spur gear (38), the connecting rod (39) and the slider (311) form a crank-slider mechanism, so that the slider (311) swings in the arc-shaped groove (310).

2. The method for unidirectional automatic cutting of valve welds according to claim 1, characterized in that, Step S1 includes the following specific steps: S11: Rotate the safety pull ring (4235), which drives the safety locking member (4234) to rotate away from the second ratchet tooth (4232), thereby releasing the safety locking member (4234) from restricting the rotation of the ratchet rotating disk (422).

3. The method for unidirectional automatic cutting of valve welds according to claim 1, characterized in that, Step S3 includes the following specific steps: S31: The rotating adjustment mechanism (414) causes the rear end (413) of the clamping module to move closer to the valve, the rear end (413) of the clamping module pushes the first clamping module (411) to move towards the center of the valve and the second clamping module (412) to move closer to the valve from both sides, so that the clamping mechanism (41) clamps the valve together from three positions.

4. The method for unidirectional automatic cutting of valve welds according to claim 1, characterized in that, It also includes step S5, the specific steps of which are as follows: S51: The ratchet wrench (421) engages the ratchet rotating disk (422) in the first rotation direction, causing the ratchet rotating disk (422) to swing with the ratchet wrench (421); S52: The tool feed mechanism (43) in the ratchet rotating disk (422) cuts the valve weld; S53: After the ratchet wrench (421) rotates to the limit position in the first rotation direction, it rotates in the second rotation direction, and the ratchet rotating disk (422) is disengaged from the ratchet wrench (421), and the ratchet rotating disk (422) stops rotating; S54: Repeat steps S51 to S53 until the valve weld cutting work is completed.

5. A unidirectional automatic valve weld cutting device, characterized in that, The method for unidirectional automatic cutting of valve weld seams as described in any one of claims 1 to 4 includes a machine base (2), an automatic lifting mechanism (1) connected to one side of the machine base (2), an electric drive mechanism (3) for changing the direction of movement and a clamping mechanism (41) for clamping the valve on the machine base (2), and the electric drive mechanism (3) is connected to and provides power for automatically cutting the valve weld seam using a ratchet automatic cutting mechanism (4).

6. A unidirectional automatic valve weld cutting device according to claim 5, characterized in that... The ratchet automatic cutting mechanism (4) includes a ratchet rotating mechanism (42) for unidirectional rotation. A tool feed mechanism (43) for feeding and cutting valve weld seams is provided on the ratchet rotating mechanism (42). The ratchet rotating mechanism (42) includes a ratchet wrench (421) for connecting to an electric drive mechanism (3) to perform a swinging motion. The ratchet wrench (421) is provided with a ratchet rotating disk (422) for loading the tool feed mechanism (43) for unidirectional rotation. A ratchet base (423) is provided on the outer periphery of the ratchet rotating disk (422) to restrict the rotation of the ratchet rotating disk (422) together with the ratchet wrench (421). The ratchet wrench (421) has a groove for connecting to the electric drive mechanism (3). 4211), the ratchet wrench (421) has a first ratchet tooth (4212) at the end near the valve that drives the tool feed mechanism (43) to rotate in one direction. The first ratchet tooth (4212) forms a ratchet wrench opening (4213) in the ratchet wrench (421) so that the valve can enter the ratchet wrench (421). The ratchet base (423) has a second ratchet tooth (4232). A safety mechanism (4233) to prevent the device from being accidentally activated is provided on one side of the second ratchet tooth (4232). The safety mechanism (4233) includes a safety locking member (4234) for locking the movement of the ratchet wrench (421). The safety locking member (4234) is connected to a safety pull ring (4235) to facilitate the rotation of the safety locking member (4234).

7. A unidirectional automatic valve weld cutting device according to claim 6, characterized in that... The ratchet rotating disk (422) includes a first rotating disk (4221) and a second rotating disk (4222) for easy disassembly and installation of the cutter (431). A pawl mechanism (4220) is provided between the first rotating disk (4221) and the second rotating disk (4222) for engaging the ratchet wrench (421) in a first rotation direction, causing the tool feed mechanism (43) on the ratchet rotating disk (422) to rotate unidirectionally, and disengaging from the ratchet wrench (421) in a second rotation direction, thus stopping the tool feed mechanism (43) on the ratchet rotating disk (422) from rotating. The pawl mechanism (4220) includes a pawl mechanism for engaging the ratchet wrench (421) in a first rotation direction. The first ratchet tooth (4212) engages in the direction of the ratchet wrench (421), causing the ratchet rotating disk (422) to rotate. The ratchet wrench (421) disengages from the first ratchet tooth (4212) in the second rotation direction, causing the ratchet rotating disk (422) to stop rotating. A first pawl (4228) is provided on one side of the first pawl (4228) to lock the rotation of the ratchet rotating disk (422) when it stops. A number of fasteners (4227) are provided between the first rotating disk (4221) and the second rotating disk (4222) for connecting the first rotating disk (4221) and the second rotating disk (4222).

8. A unidirectional automatic valve weld cutting device according to claim 7, characterized in that... The tool feed mechanism (43) includes a cutter (431) for feeding and cutting, which is mounted in a ratchet rotating disk (422). The cutter (431) is connected to a cutter mounting base (432), and a cutter adjustment element (433) for adjusting the feed amount of the cutter (431) is connected to the cutter mounting base (432).

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