Electromechanical repair welding device

Abstract

The application belongs to the technical field of maintenance welding, and specifically discloses a mechanical and electrical maintenance welding device, which comprises a base, wherein the base is provided with a track frame, two sliding members are clamped and slide on the track frame, a symmetrical distance adjusting mechanism is arranged between the two sliding members, the symmetrical distance adjusting mechanism comprises a center rod rotatably arranged on the track frame and a connecting rod connecting the center rod and the two sliding members, an angle adjusting mechanism is arranged on each sliding member, and the angle adjusting mechanism comprises a rotating shaft rotatably arranged on the sliding member and a vice fixedly arranged at the front end of the rotating shaft. The symmetrical translation of the sliding members is realized through linkage of the screw rod and the connecting rod to adjust the gap, the worm gear is driven by the spline shaft to drive the symmetrical overturning of the vice to set the inverse deformation angle, the gap and the angle are independently adjusted, when the cooling after welding, when the shrinkage stress exceeds the spring threshold value, the convex ridge and the groove of the deformation releasing mechanism are dislocated and give way, so that high-precision adjustment of the gap and the angle is realized, and stress release and moderate load constraint are considered.

Description

Technical Field

[0001] This invention belongs to the field of repair and welding technology, specifically referring to an electromechanical repair and welding device. Background Technology

[0002] In electromechanical maintenance and renovation scenarios, it is often necessary to butt-weld two independent plate-shaped workpieces. For example, load-bearing connecting plates in electromechanical equipment that have suffered fatigue fractures due to vibration or overload (such as motor base support plates or conveyor linkage plates) need to be repaired after disassembly. Operators typically need to place both base materials to be welded simultaneously in the welding fixture for positioning and fixation, followed by single-sided welding and double-sided forming. This operation usually requires leaving a certain root gap between the two base materials and machining a welding bevel. Because the welding process involves intense local heating and cooling, the molten pool metal will experience significant volume shrinkage and thermal stress during solidification. In the above welding operation, due to the presence of the bevel, the weld cross-section is usually trapezoidal, wider at the top and narrower at the bottom, resulting in a much greater lateral shrinkage at the top of the weld than at the bottom, thus causing obvious angular deformation (i.e., the included angle between the main welding surfaces of the two base materials shrinks inward). To counteract this deformation, the "reverse deformation method" is commonly used in engineering. This involves pre-setting a reverse deformation angle greater than 180 degrees before welding, hoping that it will return to a flush state during post-weld cooling and shrinkage. However, the following significant drawbacks still exist in practical applications: During pre-welding preparation, operators need to precisely adjust the assembly gap at the roots of the two base materials and set a specific anti-deformation angle. Under the existing manual or simple tooling adjustment mode, the gap and angle need to be frequently and repeatedly fine-tuned, which is not only time-consuming and labor-intensive, but also makes it difficult to ensure the assembly consistency of batch repairs.

[0003] Most positioning devices on the market currently use rigid clamps to completely lock the base material. During the welding and cooling shrinkage stages, rigid restraint will forcibly hinder the natural angular deformation of the base material, resulting in extremely high restraint stress in the weld and heat-affected zone. When the stress exceeds the material's yield strength, it can easily induce hot and cold cracks, or directly cause mechanical damage to the clamp due to overload.

[0004] To avoid the stress problems caused by rigid restraints, removing the clamps after adjustment and welding, allowing the workpiece to shrink freely, also has drawbacks. In a completely unrestrained state of free shrinkage, the weld metal lacks adequate tensile strength during crystallization and cooling (similar to the prestressing mechanism in reinforced concrete). This results in the weld area's grain density and macroscopic mechanical properties failing to reach their optimal state, making it difficult to meet the service requirements of high-intensity electromechanical maintenance. Summary of the Invention

[0005] To address the above issues, this invention provides an electromechanical repair welding device. It achieves symmetrical translation of the sliding component through the linkage of a screw and connecting rod to adjust the gap. A splined shaft drives a worm gear to symmetrically rotate the vise to set the anti-deformation angle. Both are adjusted independently. During post-weld cooling, when the shrinkage stress exceeds the spring threshold, the protrusions and grooves of the deformation release mechanism misalign and retract, thereby achieving high-precision adjustment of the gap and angle. This balances stress release with appropriate load-bearing constraints, effectively preventing cracks and improving the mechanical properties of the weld.

[0006] The technical solution adopted by the present invention is as follows: The present invention proposes an electromechanical maintenance welding device, including a base, a track frame on the base, and two sliding parts engaged and sliding on the track frame.

[0007] Furthermore, a symmetrical adjustment mechanism is provided between the two sliding members. The symmetrical adjustment mechanism includes a central rod rotatably mounted on the track frame and a connecting rod connecting the central rod and the two sliding members.

[0008] Furthermore, each sliding component is provided with an angle adjustment mechanism, which includes a rotating shaft rotatably mounted on the sliding component and a vise fixedly mounted at the front end of the rotating shaft.

[0009] Furthermore, a set of symmetrical drive mechanisms is provided on both sliding members. The symmetrical drive mechanism includes a worm wheel and a worm that are rotatably mounted on the sliding member, and a splined shaft that engages and slides and coaxially passes through the two worms. The meshing relationship between the two worms and the corresponding worm wheel is set in opposite directions.

[0010] Furthermore, a deformation release mechanism is provided between the worm gear and the rotating shaft. The deformation release mechanism includes a drive disk fixed coaxially with the worm gear and a driven disk that is linked coaxially with the rotating shaft. The end faces of the drive disk and the driven disk opposite each other are respectively provided with a plurality of matching protrusions and grooves.

[0011] Furthermore, a fixed shaft is fixedly provided in the middle of the track frame, and the middle part of the central rod is engaged and rotatably mounted on the fixed shaft. A screw rod that is engaged and rotatably mounted on the track frame is parallel to the sliding direction of the sliding member. One end of the screw rod extends out of the track frame and is provided with a first rocker arm. The threaded section of the screw rod is threadedly connected to one of the sliding members.

[0012] Furthermore, each sliding member is fixedly provided with multiple brackets at its top. The rotating shaft is horizontally arranged and perpendicular to the translation direction of the sliding member. The rotating shaft is engaged and rotatably mounted on the bracket. The worm gear and worm are both engaged and rotatably mounted on the bracket. One end of the spline shaft is engaged and rotatably mounted on the track frame and extends outward with a second rocker arm.

[0013] Furthermore, the deformation release mechanism also includes an extension tube coaxially fixed to the rear end of the rotating shaft, a sliding shaft is slidably inserted into the rear end of the extension tube, the driven disk is coaxially fixed to the rear end of the sliding shaft, and the drive disk is coaxially fixed to the side of the worm gear near the driven disk.

[0014] Furthermore, a threaded sleeve is fitted on the outside of the extension tube, and the front part of the threaded sleeve is threadedly connected to the extension tube. A sliding sleeve is also fitted on the extension tube, and the sliding sleeve abuts against the rear end of the threaded sleeve. A spring is fitted on the outside of the extension tube and the sliding shaft, and the two ends of the spring abut against the sliding sleeve and the driven disc, respectively.

[0015] Furthermore, the side of the protrusion is a sloping tightening structure. Initially, the spring presses against the driven plate to force the groove to engage with the protrusion and the driven plate to be in close contact with the drive plate.

[0016] Furthermore, the two ends of the two connecting rods are rotatably connected to the corresponding ends of the central rod and the corresponding rotating shaft, respectively, to form symmetrical translation of the two sliding parts.

[0017] Furthermore, a slot is fixedly provided at the front end of the fixed shaft, and a vertically arranged positioning plate is inserted into the slot. The positioning plate is located at the exact middle position of the two rotating shafts, and the two vises are symmetrically arranged along the positioning plate.

[0018] The beneficial effects achieved by the present invention using the above structure are as follows: (1) In view of the problem that traditional manual or simple tooling requires frequent reciprocating fine adjustments when adjusting the root gap and the reverse deformation angle, which is time-consuming, laborious and difficult to ensure batch consistency, the present invention achieves high-precision positioning and adjustment through the cooperation of symmetrical adjustment mechanism and symmetrical drive mechanism. During operation, the screw drives the sliding part to translate, and with the help of the linkage between the central rod and the connecting rod, the sliding parts on both sides are opened and closed synchronously and symmetrically to accurately adjust the gap; at the same time, the spline shaft drives the worm gear meshing in the opposite direction to drive the vises on both sides to reverse symmetrically flip to set the reverse deformation angle. Due to the sliding insertion structure of the spline shaft and the self-locking characteristics of the screw, the adjustment of the gap and angle do not interfere with each other, which greatly simplifies the pre-welding preparation process and ensures the high consistency of batch repair and assembly.

[0019] (2) In view of the contradiction that existing rigid fixtures are prone to inducing welding cracks, while complete lack of restraint will lead to a decrease in the mechanical properties of the weld, the present invention innovatively introduces a deformation release mechanism between the worm gear and the shaft. In the initial state, the spring forces the groove and protrusion of the driven disk and the drive disk to fit tightly, providing stable rigid support. When the welding is cooled and a huge angular deformation contraction force is generated and exceeds the set threshold, the inclined surface of the protrusion forces the driven disk to overcome the spring force and retreat backward and misalign. This mechanism can not only flexibly retreat when the stress is too large, avoiding cold and hot cracks or fixture damage caused by rigid restraint, but also provide the necessary load-bearing deformation force before misalignment and during misalignment friction.

[0020] (3) The present invention cleverly utilizes the positioning plate to establish a highly adaptable clamping reference. Before welding, the plate to be welded is clamped tightly against the positioning plate in the slot, ensuring that the distance from the axis of the rotating shaft to the welding edge of the plate of different widths is absolutely equal, thereby ensuring the strict symmetry of the subsequent reverse deformation angle rotation. In addition, by turning the threaded sleeve to push the sliding sleeve, the operator can flexibly change the pre-compression of the spring, thereby accurately setting the rated protection torque for the base material of different materials and plate thicknesses. Attached Figure Description

[0021] Figure 1 This is a first three-dimensional structural schematic diagram of an electromechanical repair welding device proposed in this invention.

[0022] Figure 2 This is a front view of an electromechanical repair welding device proposed in this invention.

[0023] Figure 3 This is a second three-dimensional structural schematic diagram of an electromechanical repair welding device proposed in this invention.

[0024] Figure 4 This is a schematic diagram of the symmetrical adjustment mechanism of an electromechanical maintenance welding device proposed in this invention.

[0025] Figure 5 This is a schematic diagram of the spline shaft of an electromechanical repair welding device proposed in this invention.

[0026] Figure 6 for Figure 1 Enlarged view of section A in the middle.

[0027] Figure 7 This is an exploded structural diagram of the deformation release mechanism of an electromechanical maintenance welding device proposed in this invention.

[0028] Figure 8 This is a schematic diagram of the protruding ribs of an electromechanical repair welding device proposed in this invention.

[0029] Figure 9 This is a motion trajectory diagram of the workpiece weld shrinkage of an electromechanical maintenance welding device proposed in this invention.

[0030] Among them, 1. base, 2. track frame, 3. sliding component, 31. screw, 32. first rocker arm, 33. bracket, 4. symmetrical adjustment mechanism, 41. fixed shaft, 42. center rod, 43. connecting rod, 5. angle adjustment mechanism, 51. vise, 52. rotating shaft, 6. deformation release mechanism, 61. extension tube, 62. threaded sleeve, 63. sliding sleeve, 64. sliding shaft, 65. driven plate, 651. groove, 66. spring, 67. worm gear, 68. drive plate, 681. protrusion, 7. symmetrical drive mechanism, 71. worm, 72. spline shaft, 73. second rocker arm, 8. slot, 81. positioning plate.

[0031] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof. Detailed Implementation

[0032] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0033] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0034] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 As shown, the present invention proposes an electromechanical repair welding device. The overall basic structure of the device includes a base 1, and a track frame 2 is fixedly provided on the top of the base 1. The track frame 2 provides a high-precision linear guide reference. Two sliding parts 3 are engaged and slid on the track frame 2. Through the engagement and sliding design, the smoothness of the sliding parts 3 moving along the length direction of the track frame 2 is ensured.

[0035] To achieve precise and consistent adjustment of the root gap between the two plates to be welded, a symmetrical adjustment mechanism 4 is provided between the two sliding parts 3. Specifically, a screw 31 parallel to the sliding direction of the sliding part 3 is engaged and rotated on the track frame 2. One end of the screw 31 extends out of the track frame 2 and is fixedly provided with a first rocker arm 32. The threaded section of the screw 31 is threadedly connected to one of the sliding parts 3. At the same time, a fixed shaft 41 is fixedly provided in the middle of the track frame 2. The symmetrical adjustment mechanism 4 also includes a central rod 42 and two connecting rods 43. The middle part of the central rod 42 is engaged and rotated on the fixed shaft 41. The two ends of the two connecting rods 43 are respectively rotatably connected to the corresponding ends of the central rod 42 and the rotating shafts 52 on the corresponding sliding parts 3.

[0036] When the operator rotates the first rocker arm 32, the screw 31 drives one of the sliding parts 3 to translate along the track frame 2. With the help of the mechanical linkage system formed by the connecting rod 43 and the central rod 42, the linear displacement of the sliding part 3 is converted into the rotation of the central rod 42 around the fixed axis 41. Then, through another connecting rod 43, the other sliding part 3 is pushed to make a symmetrical translation with an equal distance and opposite direction. This structural design allows the synchronous symmetrical opening and closing of the two sliding parts 3 to be achieved by single-sided drive, which provides a basis for subsequent standardized welding. In addition, the screw 31 transmission has a self-locking thread characteristic, which can automatically lock the translation position of the sliding part 3 after adjustment, without the need for an additional locking mechanism.

[0037] Multiple brackets 33 are fixedly provided on the top of each sliding member 3. Each sliding member 3 is provided with an angle adjustment mechanism 5. The angle adjustment mechanism 5 includes a rotating shaft 52 that is horizontally arranged and perpendicular to the translation direction of the sliding member 3. The rotating shaft 52 is engaged and rotatably mounted on the bracket 33. A vise 51 for clamping the base material to be welded is fixedly provided at the front end of the rotating shaft 52.

[0038] To drive the vise 51 to set the reverse deformation angle, a set of symmetrical drive mechanisms 7 is provided on the two sliding parts 3. The symmetrical drive mechanism 7 includes a worm gear 67 and a worm 71 that are engaged and rotatably mounted on the bracket 33. Each worm 71 meshes with the corresponding worm gear 67. In addition, it also includes a spline shaft 72 that coaxially passes through the two worms 71. The spline shaft 72 and the worm 71 are engaged and slidably connected. One end of the spline shaft 72 is engaged and rotatably mounted on the track frame 2 and has a second rocker arm 73 extending outward. In particular, the meshing relationship between the two worms 71 and the corresponding worm gear 67 is set in opposite directions.

[0039] The sliding insertion structure of the spline shaft 72 is a key design feature. When the two sliding parts 3 move closer or further apart under the action of the symmetrical adjustment mechanism 4, the worm 71 can slide freely axially on the spline shaft 72, thus ensuring that the spline shaft 72 does not interfere with the translational movement of the sliding parts 3, while always maintaining the torque transmission linkage with the worm 71. When the second rocker arm 73 is rotated, the spline shaft 72 synchronously drives the two worms 71 to rotate. Due to the existence of the reverse meshing relationship, the two worm wheels 67 will generate movements in opposite directions of rotation, ultimately driving the two vises 51 to flip in opposite symmetrical directions. This design achieves single-point high-precision (due to the large transmission ratio) symmetrical adjustment of the anti-deformation angle. At the same time, the inherent self-locking characteristics of the worm wheel 67 and worm 71 mechanism ensure the stability of the positioning.

[0040] To address the issues of welding cracks caused by rigid restraint and decreased mechanical properties due to lack of restraint, this invention introduces a deformation release mechanism 6 between the worm gear 67 and the rotating shaft 52. The deformation release mechanism 6 includes a drive disk 68 coaxially fixed to the rear end face of the worm gear 67 and a driven disk 65 coaxially linked with the rotating shaft 52. The end faces of the drive disk 68 and the driven disk 65 are respectively provided with a plurality of matching protrusions 681 and grooves 651, and the side of the protrusions 681 is machined into a sloping tightening structure.

[0041] In the specific transmission connection, an extension tube 61 is coaxially fixed at the rear end of the rotating shaft 52. A sliding shaft 64 is slidably engaged inside the rear end of the extension tube 61. The driven disk 65 is coaxially fixed at the rear end of the sliding shaft 64. A threaded sleeve 62 is sleeved on the outside of the extension tube 61. The front part of the threaded sleeve 62 is threadedly connected to the extension tube 61. A sliding sleeve 63 is also engaged and slidably sleeved on the extension tube 61. The sliding sleeve 63 abuts against the rear end of the threaded sleeve 62. A spring 66 is sleeved on the outside of the extension tube 61 and the sliding shaft 64. The two ends of the spring 66 abut against the sliding sleeve 63 and the driven disk 65, respectively.

[0042] In the initial state, the spring 66 is in a compressed state, and the great pressure it releases forces the driven disk 65 to press tightly against the drive disk 68, so that the groove 651 and the protrusion 681 are deeply engaged. At this time, the rotation of the drive disk 68 can rigidly drive the driven disk 65 to rotate synchronously, thereby achieving rigid adjustment of the angle.

[0043] During the cooling and shrinkage stage after welding, the base material will generate a huge angular deformation shrinkage force. This force is converted into a huge torque on the rotating shaft 52 through the vise 51. Since the worm gear 67 is self-locked by the worm 71, the drive disk 68 cannot rotate. When the shrinkage torque exceeds the set safety threshold, the groove 651 on the driven disk 65 will slide relative to (misalign) along the inclined side wall of the protrusion 681 on the drive disk 68. Under the guidance of the inclined surface, the driven disk 65 is forced to move backward, causing the sliding shaft 64 to slide backward in the extension tube 61 and further compress the spring 66.

[0044] Furthermore, by rotating the threaded sleeve 62, the sliding sleeve 63 can be pushed to move axially along the extension tube 61, thereby compressing or releasing the spring 66. This not only makes it convenient for operators to adjust the rated protective torque by pre-tightening or depressing the base material according to different materials and plate thicknesses, but also allows the driven plate 65 and the drive plate 68 to be easily reset by depressing after misalignment occurs.

[0045] Meanwhile, since the sliding shaft 64 and the extension tube 61, as well as the sliding sleeve 63 and the extension tube 61, are in a sliding engagement relationship, and the threaded sleeve 62 has a threaded self-locking property, when the driven plate 65 rotates, it can drive the sliding shaft 64, the extension tube 61, and the rotating shaft 52 to rotate synchronously. The sliding sleeve 63 and the threaded sleeve 62 can also rotate synchronously as a whole, avoiding relative rotation between the sliding sleeve 63 and the driven plate 65, thereby preventing the spring 66 from twisting and deforming during operation.

[0046] To ensure that plates of different widths have a consistent radius of rotation when clamped, a slot 8 is fixedly provided at the front end of the fixed shaft 41. A positioning plate 81 is inserted into the slot 8 and is positioned vertically. The positioning plate 81 is located in the middle of the two rotating shafts 52, and the two vises 51 are symmetrically arranged along the positioning plate 81.

[0047] The specific work process is as follows: Initial leveling and independent adjustment: This device allows for independent adjustment of distance and angle without interference. First, keep the first rocker arm 32 stationary and use the thread self-locking characteristic of the screw 31 to lock the spacing of the sliding member 3. Then, adjust the spline shaft 72 separately. Through the high-precision transmission of the worm gear 67 and worm 71, drive the two vises 51 to rotate symmetrically until the clamping surfaces of the two vises 51 are both absolutely horizontal.

[0048] Baseline positioning and clamping: Insert the positioning plate 81 into the slot 8, place the two plates to be welded horizontally in the vise 51, and ensure that the mating edges of the two plates are tightly against both sides of the positioning plate 81. This step ensures that the distances from the axes of the two rotating shafts 52 to the welding edges of the plates are absolutely equal, that is, the rotation radii on both sides are equal. This ensures that no matter how the width of the plates to be welded changes, the subsequent reverse deformation angle rotation at the weld joint is always strictly symmetrical. After positioning, tighten the vise 51 to fix the plates, and then pull out and remove the positioning plate 81.

[0049] Fine-tuning: At this point, there is an initial gap between the bevel tips of the two plates. If the gap does not meet the welding process requirements, the operator rotates the first rocker arm 32 for fine-tuning. After adjusting to a suitable root gap, the operator stops rotating the first rocker arm 32, and the gap is locked by the screw 31. Then, the operator rotates the second rocker arm 73 to adjust the spline shaft 72, which drives the vise 51 to generate a symmetrical reverse opening angle (reverse deformation angle) until the angle reaches the process setting value, and then the welding operation can begin.

[0050] Cooling contraction and flexible protection: After welding, the weld shrinks and generates angular deformation stress. When the stress is small, the spring 66 maintains the engagement of the groove 651 and the protrusion 681, providing load-bearing tensile force. When the stress increases to exceed the protection torque set by the spring 66, the inclined surface of the protrusion 681 forces the driven plate 65 to overcome the elastic force of the spring 66 and retreat backward, resulting in misalignment. The mechanism changes from rigid constraint to flexible retreat, effectively releasing thermal stress and protecting the weld and tooling.

[0051] Reset and Torque Calibration: After the workpiece has completely cooled and been removed, if it is necessary to reset the misaligned disc, the operator first reverses the screw thread sleeve 62 to release the pressure of the spring 66. In the depressurized state, the shaft 52 can be easily rotated manually to realign the groove 651 on the driven disc 65 with the protrusion 681 on the drive disc 68 and apply pressure again. After the reset is completed, if it is necessary to set a new protective torque for the next welding task of different specifications, the operator only needs to screw the screw thread sleeve 62 to the designated position again and change the pre-compression of the spring 66 by pushing the sliding sleeve 63 to complete the recalibration of the protective torque.

[0052] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0053] Although embodiments of the 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 invention.

[0054] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the invention, such designs should fall within the protection scope of the present invention.

Claims

1. An electromechanical repair welding device, comprising a base (1), characterized in that: The base (1) is provided with a track frame (2), and two sliding parts (3) are engaged and slidably mounted on the track frame (2). A symmetrical adjustment mechanism (4) is provided between the two sliding parts (3). The symmetrical adjustment mechanism (4) includes a central rod (42) rotatably mounted on the track frame (2) and a connecting rod (43) connecting the central rod (42) and the two sliding parts (3). Each sliding member (3) is provided with an angle adjustment mechanism (5), which includes a rotating shaft (52) rotatably mounted on the sliding member (3) and a vise (51) fixedly mounted at the front end of the rotating shaft (52). A set of symmetrical drive mechanisms (7) is provided on the two sliding parts (3). The symmetrical drive mechanism (7) includes a worm wheel (67) and a worm (71) rotatably mounted on the sliding part (3), and a spline shaft (72) that engages and slides and coaxially passes through the two worms (71). The meshing relationship between the two worms (71) and the corresponding worm wheel (67) is set in opposite directions. A deformation release mechanism (6) is provided between the worm gear (67) and the rotating shaft (52). The deformation release mechanism (6) includes a drive disk (68) fixed coaxially with the worm gear (67) and a driven disk (65) coaxially linked with the rotating shaft (52). The drive disk (68) and the driven disk (65) are respectively provided with a plurality of matching protrusions (681) and grooves (651) on their opposite end faces.

2. The electromechanical maintenance welding device according to claim 1, characterized in that: The track frame (2) is fixedly provided with a fixed shaft (41) in the middle. The middle part of the central rod (42) is engaged and rotatably mounted on the fixed shaft (41). The track frame (2) is engaged and rotatably mounted with a screw (31) parallel to the sliding direction of the sliding member (3). One end of the screw (31) extends out of the track frame (2) and is provided with a first rocker arm (32). The threaded section of the screw (31) is threadedly connected to one of the sliding members (3).

3. The electromechanical maintenance welding device according to claim 2, characterized in that: Each sliding member (3) has multiple brackets (33) fixedly mounted on its top. The rotating shaft (52) is horizontally positioned and perpendicular to the translation direction of the sliding member (3). The rotating shaft (52) is engaged and rotatably mounted on the bracket (33). The worm gear (67) and worm (71) are both engaged and rotatably mounted on the bracket (33). One end of the spline shaft (72) is engaged and rotatably mounted on the track frame (2) and a second rocker arm (73) extends outward.

4. The electromechanical maintenance welding device according to claim 3, characterized in that: The deformation release mechanism (6) further includes an extension tube (61) coaxially fixed to the rear end of the rotating shaft (52). The extension tube (61) has a sliding shaft (64) inserted inside its rear end. The driven disk (65) is coaxially fixed to the rear end of the sliding shaft (64). The drive disk (68) is coaxially fixed to the worm gear (67) on the side near the driven disk (65).

5. The electromechanical maintenance welding device according to claim 4, characterized in that: The extension tube (61) is fitted with a threaded sleeve (62), the front part of which is threadedly connected to the extension tube (61). A sliding sleeve (63) is also fitted onto the extension tube (61), and the sliding sleeve (63) abuts against the rear end of the threaded sleeve (62). A spring (66) is fitted onto the extension tube (61) and the sliding shaft (64), and the two ends of the spring (66) abut against the sliding sleeve (63) and the driven disc (65) respectively.

6. The electromechanical maintenance welding device according to claim 5, characterized in that: The side of the protrusion (681) is a sloping tightening structure. Initially, the spring (66) abuts against the driven plate (65) to force the groove (651) to engage with the protrusion (681) and the driven plate (65) to be in close contact with the drive plate (68).

7. The electromechanical maintenance welding device according to claim 6, characterized in that: The two ends of the two connecting rods (43) are rotatably connected to the corresponding ends of the central rod (42) and the corresponding rotating shaft (52) respectively, so as to form the symmetrical translation of the two sliding parts (3).

8. The electromechanical maintenance welding device according to claim 7, characterized in that: The front end of the fixed shaft (41) is fixedly provided with a slot (8), and a vertically arranged positioning plate (81) is inserted into the slot (8). The positioning plate (81) is located in the middle of the two rotating shafts (52), and the two vises (51) are symmetrically arranged along the positioning plate (81).

Images