Surfacing welding device for repairing connecting rod of diesel engine

Abstract

The utility model is suitable for the technical field of diesel engine parts, and provides a diesel engine connecting rod repair surfacing device which comprises a base, a welding assembly, a clamping assembly used for abutting against a connecting rod small end on a diesel engine connecting rod and a limiting assembly used for limiting a connecting rod large end on the diesel engine connecting rod. The clamping assembly comprises a mounting box, a chuck mounted on the mounting box and a guide part mounted at the axis of the chuck, a sliding groove is formed in the chuck, an abutting part is slidably arranged in the sliding groove, and the limiting assembly comprises a positioning part used for positioning the large end of the connecting rod and a limiting part arranged on one side of the positioning part. The limiting piece comprises a sliding rail and a limiting plate installed on the sliding rail in a sliding mode. The device solves the problems that the chuck is difficult to clamp the large head of the square diesel engine connecting rod and cannot ensure the positioning of the large head of the connecting rod, and achieves the effects of limiting and clamping the large head and the small head of the diesel engine connecting rod with different shapes and avoiding the influence of inaccurate positioning of the diesel engine connecting rod on the surfacing quality in the surfacing process.

Description

Technical Field

[0001] This utility model relates to the field of diesel engine parts technology, and more specifically, it relates to a diesel engine connecting rod repair welding device. Background Technology

[0002] The connecting rod is a crucial component of a diesel engine, playing a key role in its mechanical structure and power transmission. It connects the piston and crankshaft, converting the reciprocating linear motion of the piston into the rotational motion of the crankshaft, thus enabling the engine's power output. Plasma welding repair of connecting rods is a technique that uses a welding device to treat the surface of the connecting rod. It is primarily used to repair connecting rod surfaces damaged by wear, corrosion, and other factors, while also improving its wear resistance and service life.

[0003] Patent CN222830997U discloses a continuous casting roll surfacing equipment. This equipment moves the original carbon brush installation position from the continuous casting roll to the main shaft that drives the continuous casting roll to rotate, and indirectly connects to the continuous casting roll through a chuck on the main shaft that holds the continuous casting roll.

[0004] In existing technologies, welding cladding devices are designed to process the inner wall of welded pipes, and therefore, the corresponding workpiece support devices all use chucks to clamp the pipe body. Although the welding of diesel engine connecting rods also involves machining a circular arc surface, the shape of the connecting rod is completely different from that of the welded pipe. While the small end of the connecting rod has a circular arc structure, the large end has a square structure. Ordinary chucks are insufficient to clamp and limit the large end of the diesel engine connecting rod, resulting in inaccurate positioning of the connecting rod during the welding process, which affects the welding quality. Utility Model Content

[0005] To address the shortcomings of existing technologies, the purpose of this utility model is to provide a diesel engine connecting rod repair welding device that limits and clamps the big end and small end of diesel engine connecting rods of different shapes, thereby preventing inaccurate positioning of the diesel engine connecting rod from affecting the welding quality during the welding process.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A diesel engine connecting rod repair welding device includes a base, a welding assembly, a clamping assembly for holding the small end of the connecting rod on the diesel engine connecting rod, and a limiting assembly for limiting the large end of the connecting rod on the diesel engine connecting rod. The clamping assembly includes a mounting box, a clamping plate mounted on the mounting box, and a guide member mounted at the center of the clamping plate. The clamping plate has a sliding groove, and the holding member is slidably disposed in the sliding groove. The limiting assembly includes a positioning member for positioning the large end of the connecting rod and a limiting member disposed on one side of the positioning member. The limiting member includes a slide rail and a limiting plate slidably mounted on the slide rail.

[0008] The present invention is further configured such that: four sliding grooves are provided on the clamping plate, and the sliding grooves are symmetrically arranged about the axis of the clamping plate.

[0009] The present invention is further configured such that: a motor is installed inside the mounting box, the motor is connected to the clamping plate, and the motor can drive the supporting member to slide along the slide groove.

[0010] The present invention is further configured such that: the guide member includes a connecting seat connected to the clamp and a tapered portion disposed on the connecting seat, the shape of the tapered portion being adapted to the small end of the connecting rod.

[0011] By adopting the above technical solution, the small end of the connecting rod is placed on the clamp, so that the tapered part on the guide passes through the second weld ring on the small end of the connecting rod. The connection between the top of the connecting seat and the tapered part can abut against the inner wall of the second weld ring, thereby guiding the small end of the connecting rod.

[0012] The present invention is further configured such that: the positioning component includes a positioning horizontal plate and a positioning vertical plate arranged perpendicularly to each other, and the limiting plate is arranged parallel to the positioning horizontal plate.

[0013] The present invention is further configured such that: the limiting member also includes a fixed seat and a rodless cylinder mounted on the fixed seat, and a cylinder slider is slidably mounted on the rodless cylinder.

[0014] The present invention is further configured such that: a limiting slider is slidably disposed on the slide rail, a limiting plate is mounted on the limiting slider, and the limiting plate and the cylinder slider are connected by a connecting member.

[0015] The present invention is further configured such that the welding assembly includes a welding seat, a first rotating arm rotatably connected to the welding seat, a second rotating arm rotatably connected to the first rotating arm, and a welding head installed at the end of the second rotating arm.

[0016] The beneficial effects of this utility model are:

[0017] The small end of the connecting rod is clamped and guided by the supporting and guiding components to ensure accurate positioning. The large end of the connecting rod is limited by the positioning horizontal plate, positioning vertical plate, and limiting plate to ensure accurate positioning. This avoids affecting the welding quality due to inaccurate positioning of the large end of the connecting rod during subsequent welding processes. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] Figure 1 This is a schematic diagram of the structure of the diesel engine connecting rod repair welding device and the diesel engine connecting rod of this utility model.

[0020] Figure 2 This is a schematic diagram of the diesel engine connecting rod repair welding device of this utility model.

[0021] Figure 3 for Figure 2 The diagram shows the structure of the clamping assembly.

[0022] Figure 4 for Figure 3 The top view shown.

[0023] Figure 5 For along Figure 4 A cross-sectional view showing section line AA.

[0024] Figure 6 for Figure 2 The diagram shows the structure of the limiting component.

[0025] Figure 7 for Figure 1 The diagram shows the structure of the connecting rod of the diesel engine.

[0026] Explanation of reference numerals in the attached drawings: 10. Welding surfacing device;

[0027] 1. Base; 11. Mounting platform; 12. First welding platform; 13. Second welding platform;

[0028] 2. Welding assembly; 21. Welding seat; 22. First rotating arm; 23. Second rotating arm; 24. Welding head; 25. Welding torch;

[0029] 3. Clamping assembly; 31. Mounting box; 32. Motor; 33. Clamping plate; 331. Slide groove; 332. Supporting component; 333. Inclined part; 34. Guide component; 341. Conical part; 342. Connecting seat;

[0030] 4. Limiting component; 41. Positioning element; 411. Positioning horizontal plate; 412. Positioning vertical plate; 42. Limiting element; 421. Fixing base; 422. Rodless cylinder; 423. Cylinder slider; 424. Connecting element; 425. Slide rail; 426. Limiting slider; 427. Limiting plate;

[0031] 20. Diesel engine connecting rod; 201. Rod body; 202. Connecting rod big end; 203. First weld ring; 204. Connecting rod small end; 205. Second weld ring. Detailed Implementation

[0032] To make the technical problem to be solved, the technical solution, and the beneficial effects of this utility model clearer, the present utility model will now be described in detail with reference to the accompanying drawings. This drawing is a simplified schematic diagram, illustrating only the basic aspects of the present utility model, and therefore only shows the components relevant to the present utility model. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0033] Please refer to Figure 1-2 and Figure 7 The diesel engine connecting rod 20 includes a rod body 201 and a connecting rod big end 202 and a connecting rod small end 204 respectively disposed at both ends of the rod body 201. The connecting rod big end 202 has a square structure and a first weld ring 203 is formed inside the connecting rod big end 202. The connecting rod small end 204 has a circular structure and a second weld ring 205 is formed inside the connecting rod small end 204. A diesel engine connecting rod repair welding device 10 includes a base 1, a welding assembly 2, a clamping assembly 3 for holding the connecting rod small end 204 on the diesel engine connecting rod 20, and a limiting assembly 4 for limiting the position of the connecting rod big end 202 on the diesel engine connecting rod 20. When the welding device 10 is repairing, the small end 204 of the connecting rod is fixed by the clamping assembly 3, the large end 202 of the connecting rod is fixed by the limiting assembly 4, and the welding assembly 2 performs welding on the first weld ring 203 on the large end 202 of the connecting rod and the second weld ring 205 on the small end 204 of the connecting rod.

[0034] Please refer to Figure 1-2 The base 1 includes a mounting platform 11, a first welding platform 12, and a second welding platform 13. The welding assembly 2 is mounted on the mounting platform 11, the clamping assembly 3 is mounted on the first welding platform 12, and the limiting assembly 4 is mounted on the second welding platform 13. The first welding platform 12 and the second welding platform 13 are height-matched, and the large end 202 and small end 204 of the connecting rod at both ends of the diesel engine connecting rod 20 can be placed horizontally on the limiting assembly 4 and the clamping assembly 3.

[0035] Please refer to Figure 1-2 The welding assembly 2 includes a welding seat 21, a first rotating arm 22 rotatably connected to the welding seat 21, a second rotating arm 23 rotatably connected to the first rotating arm 22, and a welding head 24 mounted on the end of the second rotating arm 23. The welding seat 21 is mounted on the mounting platform 11. The first rotating arm 22 can rotate relative to the welding seat 21, and the second rotating arm 23 can rotate relative to the first rotating arm 22. The rotation of the second rotating arm 23 of the first rotating arm 22 drives the welding head 24 to move synchronously, facilitating the adjustment of the position of the welding head 24. A welding torch 25 is provided inside the welding head 24. As the welding torch 25 moves with the welding head 24, it can perform welding on the first weld ring 203 and the second weld ring 205.

[0036] Please refer to Figure 1 and Figure 3-5 The clamping assembly 3 includes a mounting box 31, a clamping plate 33 mounted on the mounting box 31, and a guide member 34 mounted at the axis of the clamping plate 33. The mounting box 31 is mounted on the first welding table 12, and a motor 32 is installed inside the mounting box 31. The motor 32 is connected to the clamping plate 33. The clamping plate 33 has four sliding grooves 331, which are symmetrically arranged about the axis of the clamping plate 33. A retaining member 332 is slidably disposed in the sliding groove 331. The clamping plate 33 has a large gear connected to the output end of the motor 32 and a threaded disc that meshes with each retaining member 332. The large gear and the threaded disc mesh with each other. When the motor 32 rotates, it drives the large gear to rotate. Through the meshing of the large gear and the threaded disc, the threaded disc is driven to rotate synchronously. During the rotation of the threaded disc, the retaining member 332 is driven to slide along the sliding groove 331, thereby clamping the diesel engine connecting rod 20. The abutment 332 has an inclined portion 333 on the side near the center of the clamp 33. During the sliding of the abutment 332 along the slide groove 331, the inclined portion 333 on the abutment 332 can fit against the rod body 201, thereby abutting the diesel engine connecting rod 20 from both sides of the rod body 201.

[0037] Please refer to Figure 1 and Figure 3-5 The guide member 34 includes a connecting seat 342 connected to the clamp 33 and a tapered portion 341 disposed on the connecting seat 342. The shape of the tapered portion 341 is adapted to the small end 204 of the connecting rod. When the large end 202 of the connecting rod is placed on the guide member 34, the tapered portion 341 passes through the second weld ring 205 on the small end 204 of the connecting rod. The connection between the top of the connecting seat 342 and the tapered portion 341 can abut against the inner wall of the second weld ring 205, thereby guiding the small end 204 of the connecting rod so that the axis of the small end 204 of the connecting rod coincides with the axis of the clamp 33.

[0038] Please refer to Figure 1-2 and Figure 6 The limiting assembly 4 includes a positioning member 41 for positioning the big end 202 of the connecting rod and a limiting member 42 disposed on one side of the positioning member 41. The positioning member 41 and the limiting member 42 cooperate to limit and fix the big end 202 of the connecting rod. The positioning member 41 includes a positioning horizontal plate 411 and a positioning vertical plate 412 arranged perpendicularly to each other. The positioning horizontal plate 411 and the positioning vertical plate 412 are respectively attached to the side wall of the big end 202 of the connecting rod.

[0039] Please refer to Figure 1-2 and Figure 6The limiting component 42 includes a fixed base 421, a rodless cylinder 422 mounted on the fixed base 421, a slide rail 425, and a limiting plate 427 slidably mounted on the slide rail 425. Both ends of the rodless cylinder 422 are fixed to the fixed base 421, and the slide rail 425 is located on one side of the rodless cylinder 422. The slide rail 425 and the rodless cylinder 422 are arranged along the axis of the positioning longitudinal plate 412. A cylinder slider 423 is slidably mounted on the rodless cylinder 422. A piston is located inside the cylinder barrel of the rodless cylinder 422, and a magnetic ring is located on the piston. A magnetic ring is located on the inner side of the cylinder slider 423. When the piston inside the rodless cylinder 422 is pushed by air pressure within the cylinder barrel, the magnetic coupling between the magnetic rings causes the magnetic ring on the inner side of the cylinder slider 423 to move synchronously with the piston, thus realizing the sliding of the cylinder slider 423 along the rodless cylinder 422. A limiting slider 426 is slidably mounted on the slide rail 425, and a limiting plate 427 is installed on the limiting slider 426. The limiting plate 427 and the cylinder slider 423 are connected by a connector 424. When the cylinder slider 423 slides along the rodless cylinder 422, it can synchronously drive the limiting plate 427 and the limiting slider 426 to slide along the slide rail 425. The limiting plate 427 is set parallel to the positioning cross plate 411. When the limiting plate 427 slides along the slide rail 425, it can fit against the side wall of the connecting rod big end 202 to limit the connecting rod big end 202.

[0040] Specifically, before the welding is performed, the small end 204 of the connecting rod is placed on the clamp 33, so that the tapered part 341 on the guide 34 passes through the second weld ring 205 on the small end 204 of the connecting rod. The top of the connecting seat 342 and the tapered part 341 can abut against the inner wall of the second weld ring 205, thereby guiding the small end 204 of the connecting rod. Then, the motor 32 rotates to drive the abutment 332 to slide along the slide groove 331, so that the inclined part 333 on the abutment 332 can fit against the rod body 201, and abut against the diesel engine connecting rod 20 from both sides of the rod body 201.

[0041] The connecting rod big end 202 is placed inside the positioning component 41, so that the side wall of the connecting rod big end 202 is in contact with the positioning horizontal plate 411 and the positioning vertical plate 412 respectively. The cylinder slider 423 slides along the rodless cylinder 422, which simultaneously drives the limiting plate 427 to slide along the slide rail 425, so that the limiting plate 427 is in contact with the side wall of the connecting rod big end 202. Through the cooperation of the positioning horizontal plate 411, the positioning vertical plate 412 and the limiting plate 427, the connecting rod big end 202 is limited from different directions to ensure its accurate positioning in the subsequent welding process.

[0042] The small end 204 of the connecting rod is clamped and guided by the abutment 332 and the guide 34 to ensure accurate positioning of the small end 204. The large end 202 of the connecting rod is limited by the positioning horizontal plate 411, the positioning vertical plate 412 and the limiting plate 427 to ensure accurate positioning of the large end 202. This avoids affecting the welding quality due to inaccurate positioning of the large end 202 of the connecting rod during the subsequent welding process.

[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 welding device for repairing connecting rods of diesel engines, characterized in that: The assembly includes a base (1), a welding assembly (2), a clamping assembly (3) for holding the small end (204) of the connecting rod on the diesel engine connecting rod (20), and a limiting assembly (4) for limiting the large end (202) of the connecting rod on the diesel engine connecting rod (20). The clamping assembly (3) includes a mounting box (31), a clamping plate (33) mounted on the mounting box (31), and a guide member (34) mounted on the axis of the clamping plate (33). The clamping plate (33) has a groove (331) and a holding member (332) is slidably arranged in the groove (331). The limiting assembly (4) includes a positioning member (41) for positioning the large end (202) of the connecting rod and a limiting member (42) arranged on one side of the positioning member (41). The limiting member (42) includes a slide rail (425) and a limiting plate (427) slidably mounted on the slide rail (425).

2. The diesel engine connecting rod repair welding device according to claim 1, characterized in that: Four grooves (331) are provided on the clamp (33), and the grooves (331) are symmetrically arranged about the axis of the clamp (33).

3. The diesel engine connecting rod repair welding device according to claim 2, characterized in that: The mounting box (31) is equipped with a motor (32), which is connected to the clamp (33). The motor (32) can drive the support member (332) to slide along the slide groove (331).

4. The diesel engine connecting rod repair welding device according to claim 1, characterized in that: The guide (34) includes a connecting seat (342) connected to the clamp (33) and a tapered portion (341) disposed on the connecting seat (342), the tapered portion (341) being adapted to the small end (204) of the connecting rod.

5. The diesel engine connecting rod repair welding device according to claim 1, characterized in that: The positioning component (41) includes a positioning horizontal plate (411) and a positioning vertical plate (412) arranged perpendicularly to each other, and the limiting plate (427) is arranged parallel to the positioning horizontal plate (411).

6. The diesel engine connecting rod repair welding device according to claim 5, characterized in that: The limiting member (42) also includes a fixed seat (421) and a rodless cylinder (422) mounted on the fixed seat (421), on which a cylinder slider (423) is slidably mounted.

7. The diesel engine connecting rod repair welding device according to claim 6, characterized in that: A limit slider (426) is slidably disposed on the slide rail (425), and a limit plate (427) is mounted on the limit slider (426). The limit plate (427) and the cylinder slider (423) are connected by a connector (424).

8. The diesel engine connecting rod repair welding device according to claim 7, characterized in that: The welding assembly (2) includes a welding seat (21), a first rotating arm (22) rotatably connected to the welding seat (21), a second rotating arm (23) rotatably connected to the first rotating arm (22), and a welding head (24) installed at the end of the second rotating arm (23).

Images