A clamping tool for connecting rod butt welding repair

Abstract

The utility model is suitable for connecting rod technical field provides a kind of clamping tool for connecting rod butt welding repair, including bottom plate, the top fixed connection of bottom plate has for welding surfacing assembly, for clamping connecting rod's clamping assembly, the clamping assembly includes longitudinal arrangement slide rail, the slide rail top sliding connection has two groups of sliding blocks, and each group sliding block one side fixed connection has connecting block, and connecting block one end is connected with pneumatic cylinder, and each group sliding block top fixed connection has prop open module, and prop open module is used to resist two groups of connecting holes of connecting rod.This device solves the problem that the traditional connecting rod repair equipment cannot accommodate different size connecting rods within the same clamping specification range. By adjusting the clamping distance through the cooperation of the sliding block and the slide rail, and combining the self-adaptive change of the hole diameter of the prop open assembly, stable clamping and precise positioning of different specifications of connecting rods are achieved, so that the surfacing repair work of the connecting rod can be efficiently completed.

Description

Technical Field

[0001] This utility model relates to the field of connecting rod technology, and more specifically, it relates to a clamping tool for connecting rod butt welding repair. Background Technology

[0002] During the welding repair of connecting rods, precise positioning and fixation of the parts to be repaired are often required to ensure uniform weld thickness, stable weld formation, and balanced heat input in the welding area. Especially for connecting rod parts, which typically have mounting holes or connection holes at both ends, reliable support and positioning of these holes are necessary before welding to ensure their axes remain aligned and prevent welding deformation.

[0003] However, existing link positioning devices mostly use fixed structures or single-sized expansion blocks, which are difficult to adapt to links of different lengths and hole diameters. In actual production, when the link size changes, operators often need to replace the entire positioning assembly or repeatedly adjust the spacing, which not only increases clamping time but also easily leads to hole wall damage or positioning misalignment due to uneven expansion force.

[0004] Chinese patent CN219152215U proposes a connecting rod vertical clamping device. Although this device can clamp the connecting rod and adapt to connecting rods with different hole diameters, it has certain limitations on the length of the connecting rod and cannot adapt to connecting rods that are too long or too short. Furthermore, this device clamps and fixes the connecting rod longitudinally, making it difficult to perform weld overlay repair in actual repairs.

[0005] Therefore, based on the above problems, this application proposes a clamping fixture for connecting rod butt welding repair. Utility Model Content

[0006] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a plasma welding repair device for connecting rods that can adapt to different connecting rod lengths and bore diameters.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] A clamping fixture for connecting rod butt welding repair includes a base plate. The top of the base plate is fixedly connected to a welding surfacing assembly for welding and a clamping assembly for clamping the connecting rod. The clamping assembly includes a longitudinally arranged slide rail. Two sets of sliders are slidably connected to the top of the slide rail. A connecting block is fixedly connected to one side of each set of sliders. A cylinder is connected to one end of the connecting block. A spreading module is fixedly connected to the top of each set of sliders. The spreading module is used to abut against two sets of connecting holes of the connecting rod.

[0009] The present invention is further configured such that: the cylinder output end is fixedly connected to the connecting block, and the connecting block is perpendicular to the slider; two sets of fixing rings are sleeved on the outer wall of the cylinder, and the fixing rings are fixedly connected to the top of the base plate.

[0010] The present invention is further configured such that: the supporting module includes a base, a first connecting plate and a second connecting plate are fixedly connected to the top of the base, the first connecting plate and the second connecting plate are configured as discs and have a plurality of grooves on their outer walls, a through hole is provided at the center of the second connecting plate, and a first rotating rod is rotatably connected to the groove of the first connecting plate.

[0011] The present invention is further configured such that: a second rotating rod is rotatably connected to the groove of the second connecting plate, the second rotating rod is configured as an L-shaped structure, and the bottom of the second rotating rod is rotatably connected to the top of the first rotating rod.

[0012] The present invention is further configured such that: a longitudinal cylinder is fixedly connected to the through hole of the second connecting plate, and the output end of the longitudinal cylinder is fixedly connected to the top of the first connecting plate.

[0013] The present invention is further configured such that: an abutment block is connected to the outside of the second rotating rod, the abutment block being used to abut against the inner wall of the connecting hole of the connecting rod.

[0014] The present invention is further configured such that: columns are connected to both ends of the welding assembly, and the columns are arranged in a vertical direction.

[0015] The present invention is further configured such that: the top of the base plate is provided with an installation hole, and the installation hole is adapted to the shape of the column.

[0016] In summary, this application includes at least one of the following beneficial technical effects:

[0017] 1. This application achieves adaptive adjustment for connecting rods of different lengths by utilizing the relative displacement of two sets of sliders on the guide rail. Specifically, when the two sets of sliders move towards each other along the guide rail, the distance between the opening modules decreases, which can be used to clamp shorter connecting rods; when the two sets of sliders move away from each other, the distance between the opening modules increases, which can accommodate longer connecting rods. This structure allows the entire device to flexibly adjust the distance between the two sets of opening modules, thus ensuring compatibility with connecting rods of different specifications.

[0018] 2. This application utilizes a longitudinal cylinder to drive the first and second rotating rods within the expansion module, enabling the abutment block to expand and position the connecting rod connection hole in the radial direction. This structure not only achieves reliable clamping and precise positioning of connecting rods with different hole diameters but also avoids eccentricity or loosening problems caused by hole diameter mismatch. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of a plasma cladding repair device according to the present invention.

[0020] Figure 2 This is a schematic diagram of the structure of the base plate and clamping assembly in this utility model.

[0021] Figure 3 This is a schematic diagram of the clamping component in this utility model.

[0022] Figure 4 This is a schematic diagram of the clamping module in this utility model.

[0023] Figure 5 This is a structural schematic diagram of the support module from another perspective in this utility model.

[0024] Figure 6 This is a schematic diagram of the connecting rod in this utility model.

[0025] Explanation of reference numerals in the attached drawings: 1. Welding assembly; 11. Column; 2. Base plate; 21. Mounting hole; 3. Clamping assembly; 31. Slide rail; 32. Slider; 33. Cylinder; 34. Fixing ring; 35. Connecting block; 36. Spreading module; 361. Base; 362. First connecting plate; 363. Second connecting plate; 364. First rotating rod; 365. Second rotating rod; 366. Longitudinal cylinder; 367. Abutment block; 4. Connecting rod; 41. First connecting hole; 42. Second connecting hole; 43. Connecting rod head. Detailed Implementation

[0026] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0027] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0028] Example 1, please refer to Figures 1-6 This utility model provides the following technical solution: a plasma cladding repair device for cladding repair of a connecting rod, wherein the connecting rod 4 has a first connecting hole 41 and a second connecting hole 42, and a connecting rod head 43 is fixedly connected to the top of the connecting rod 4. The plasma cladding repair device includes a base plate 2, which serves as the overall base of the device and provides support for the entire device. A cladding assembly 1 for welding and a clamping assembly 3 for clamping the connecting rod 4 are fixedly connected to the top of the base plate 2.

[0029] The welding assembly 1 is used to weld and repair the connecting rod 4. Columns 11 are connected to both ends of the welding assembly 1, and the columns 11 are set vertically. The top of the base plate 2 has mounting holes 21, which are adapted to the shape of the columns 11. The columns 11 are fixedly connected to the mounting holes 21 to fix the welding assembly 1.

[0030] The clamping assembly 3 includes a longitudinally arranged slide rail 31, and two sets of sliders 32 are slidably connected to the top of the slide rail 31. The sliders 32 can reciprocate along the longitudinal direction of the slide rail 31. A connecting block 35 is fixedly connected to one side of each set of sliders 32. The connecting block 35 is perpendicular to the slider 32 to ensure that when the connecting block 35 moves, it can drive the slider 32 to move synchronously relative to the slide rail 31.

[0031] A cylinder 33 is connected to one end of the connecting block 35. The cylinder 33 is arranged parallel to the slide rail 31. The output end of the cylinder 33 is connected to one end of the connecting block 35. The cylinder 33 can drive the connecting block 35 to move by extending and retracting. Two sets of fixing rings 35 are sleeved on the outer wall of the cylinder 33. The two sets of fixing rings 35 are respectively sleeved on the head and tail of the cylinder 33, and one side of the fixing ring 35 is fixedly connected to the base plate 2, thereby fixing the cylinder 33.

[0032] By adjusting the relative displacement of the two sets of sliders 32 on the guide rail 31, adaptive adjustment can be achieved for connecting rods 4 of different lengths. Specifically, when the two sets of sliders 32 move towards each other along the guide rail 31, the distance between the spreading modules 36 decreases, which can be used to clamp shorter connecting rods 4; when the two sets of sliders 32 move away from each other, the distance between the spreading modules 36 increases, which can accommodate longer connecting rods 4. Through this structure, the entire device can flexibly adjust the distance between the two sets of spreading modules 36, thereby being compatible with connecting rods 4 of different specifications.

[0033] Each set of sliders 32 has a fixedly connected expansion module 36 at its top. The expansion module 36 is used to hold the first connection hole 41 or the second connection hole 42 of the connecting rod 4.

[0034] Specifically, the expansion module 36 includes a base 361, which is fixedly connected to the top of the slider 32. A first connecting plate 362 and a second connecting plate 363 are sequentially arranged on the top of the base 361, and the two are arranged in layers along the vertical direction, with the first connecting plate 362 located at the bottom and the second connecting plate 363 located at the top. Both the first connecting plate 362 and the second connecting plate 363 are disc-shaped, and their outer walls have several sets of grooves.

[0035] Both the first connecting plate 362 and the second connecting plate 363 are configured as disc-shaped structures. Several sets of grooves are evenly distributed on the outer wall of the disc, used to install and restrict the position of the rotating rod's shaft end. A through hole is formed at the center of the second connecting plate 363, and a longitudinal cylinder 366 is fixedly installed within the through hole. The longitudinal cylinder 366 is vertically positioned and can extend and retract in the vertical direction. The output end of the longitudinal cylinder 366 faces downwards, and its piston rod end is fixedly connected to the top of the first connecting plate 362. The extension and retraction of the longitudinal cylinder 366 changes the distance between the first connecting plate 362 and the second connecting plate.

[0036] A first rotating rod 364 is rotatably connected to the groove of the first connecting plate 362; a second rotating rod 365 is rotatably connected to the groove of the second connecting plate 363. The second rotating rod 365 is configured with an L-shaped structure, and its bottom short arm end is rotatably connected to the top of the first rotating rod 364. An abutment block 367 is externally connected to the second rotating rod 365, and the abutment block 367 is used to abut against the first connecting hole 41 or the second connecting hole 42 of the connecting rod 4.

[0037] Furthermore, the abutment block 367 and the rotating rod 365 are rotatably connected. This connection is damped, specifically achieved through a rotating shaft at the end of the rotating rod 365, a damping sleeve, and a limiting washer, forming a rotatable structure with damped torque. When no external force is applied, the damping structure maintains a stable angle between the abutment block 367 and the rotating rod 365, preventing ineffective oscillations due to equipment vibration or reciprocating motion. When subjected to external force, such as when the abutment block 367 abuts against the edge of the connecting hole in the connecting rod 4 during movement, the external force overcomes the damping force, causing the abutment block 367 to rotate relative to the rotating rod 365, thus achieving flexible avoidance and preventing hard collisions.

[0038] Furthermore, the surface of the abutment block 367 is covered with a high-temperature resistant flexible material layer. This material layer can provide a buffering effect during the abutment process, reduce wear and impact caused by hard contact, avoid damage to the connection hole of the connecting rod 4, and improve the stability and durability of the device in high-temperature or frequent operation environments.

[0039] In another embodiment, the surface of the abutment block 367 is configured with an arc-shaped structure. This arc shape allows for a smoother contact transition with the connecting hole of the connecting rod 4, reducing local stress concentration and making the abutment action more stable, thus improving the overall service life of the mechanism. Specifically, when the piston rod of the longitudinal cylinder 366 is in the extended position, the first connecting plate 362 is far from the second connecting plate 363, with a large distance between them. At this time, the first rotating rod 364 and the second rotating rod 365 are approximately coaxially connected longitudinally. Since the two rotating rods 364 and 365 almost overlap in the vertical direction, the abutment block 367 at the outer end of the second rotating rod 365 is also in its most retracted position, facilitating the insertion of the expansion module 36 between the two sets of connecting holes of the connecting rod 4.

[0040] When it is necessary to open and position the two sets of connecting holes of the connecting rod 4, the piston rod of the longitudinal cylinder 366 retracts inward along the through hole direction, thereby driving the second connecting plate 363 to move downward, so that the second connecting plate 363 gradually approaches the first connecting plate. At this time, the first rotating rod 364 and the second rotating rod 365 connected between the first connecting plate 362 and the second connecting plate 363 are forced to rotate relative to each other.

[0041] Specifically, the lower end of the first rotating rod 364 is hinged to the first connecting plate 362, and the upper end is connected to the bottom end of the second rotating rod 365 via a rotating shaft. The upper end of the second rotating rod 365 is connected to the second connecting plate 363 via a rotating shaft. When the longitudinal cylinder 366 retracts, the upper end of the first connecting plate 362 moves downward and approaches the second connecting plate 363, causing the lower end of the first rotating rod 364 to drop and deflect outward, thereby causing the second rotating rod 365 connected to it to swing outward around the upper rotating shaft.

[0042] As the second rotating rod 365 gradually deflects, the abutment block 367 at its outer end extends outward in the radial direction, gradually contacting and abutting the inner wall of the connecting hole of the connecting rod 4. As the longitudinal cylinder 366 continues to retract, the swing angle of the second rotating rod 365 further increases, and the abutment block 367 applies a uniform radial expansion force to the inner wall of the connecting hole, thereby causing the two sets of connecting holes of the connecting rod 4 to be opened synchronously and maintained in a stable assembly position.

[0043] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0044] It should be understood that the terms "length", "width", "up", "down", "front and back", "left and right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" 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 utility model and simplifying the description, and are not intended to 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 utility model.

[0045] Based on the preferred embodiments of this utility model described above, those skilled in the art can make various changes and modifications without departing from the scope of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A clamping fixture for connecting rod butt welding repair, characterized in that: The base plate (2) is fixedly connected to the top of the base plate (2) with a welding surfacing assembly (1) for welding and a clamping assembly (3) for clamping the connecting rod (4). The clamping assembly (3) includes a longitudinally arranged slide rail (31). Two sets of sliders (32) are slidably connected to the top of the slide rail (31). A connecting block (35) is fixedly connected to one side of each set of sliders (32). A cylinder (33) is connected to one end of the connecting block (35). A spreading module (36) is fixedly connected to the top of each set of sliders (32). The spreading module (36) is used to hold the two sets of connecting holes of the connecting rod (4).

2. The clamping fixture for connecting rod butt welding repair according to claim 1, characterized in that: The output end of the cylinder (33) is fixedly connected to the connecting block (35), and the connecting block (35) is perpendicular to the slider (32). Two sets of fixing rings (34) are sleeved on the outer wall of the cylinder (33), and the fixing rings (34) are fixedly connected to the top of the base plate (2).

3. The clamping fixture for connecting rod butt welding repair according to claim 1, characterized in that: The expansion module (36) includes a base (361), and a first connecting plate (362) and a second connecting plate (363) are provided on the top of the base (361). The first connecting plate (362) and the second connecting plate (363) are both disc-shaped and have several sets of grooves on their outer walls. A through hole is provided at the center of the second connecting plate (363). A first rotating rod (364) is rotatably connected to the groove of the first connecting plate (362).

4. The clamping fixture for connecting rod butt welding repair according to claim 3, characterized in that: A second rotating rod (365) is rotatably connected to the groove of the second connecting plate (363). The second rotating rod (365) is configured as an L-shaped structure, and the bottom of the second rotating rod (365) is rotatably connected to the top of the first rotating rod (364).

5. The clamping fixture for connecting rod butt welding repair according to claim 3, characterized in that: A longitudinal cylinder (366) is fixedly connected to the through hole of the second connecting plate (363), and the output end of the longitudinal cylinder (366) is fixedly connected to the top of the first connecting plate (362).

6. The clamping fixture for connecting rod butt welding repair according to claim 4, characterized in that: The second rotating rod (365) is externally connected to an abutment block (367), which is used to abut against the inner wall of the connecting hole of the connecting rod (4).

7. The clamping fixture for connecting rod butt welding repair according to claim 1, characterized in that: The welding assembly (1) has columns (11) connected to both ends, and the columns (11) are arranged in a vertical direction.

8. A clamping fixture for connecting rod butt welding repair according to claim 7, characterized in that: The base plate (2) has an installation hole (21) on its top, and the installation hole (21) is adapted to the shape of the column (11).

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