A multi-angle rotary shot peening device for piston rods of large marine diesel engines

Abstract

This utility model discloses a multi-angle rotary shot peening device for large marine diesel engine piston rods, including a base and a shot peening gun. A support is fixedly mounted on the top of the base, and a transverse movement mechanism is mounted on the top of the support. A first cylinder is fixedly mounted on the bottom of the transverse movement mechanism, and an angle adjustment mechanism is mounted on the moving end of the first cylinder. The shot peening gun is positioned at the bottom of the angle adjustment mechanism. A protective hopper is located above the base. This utility model achieves multi-dimensional movement of the shot peening gun by rotating the workpiece with rollers and linking the transverse movement mechanism with the angle adjustment mechanism. This solves the problems of single shot peening angle and insufficient axial coverage in traditional processes, enabling shot peening of the entire surface and complex parts of the piston rod without dead angles, reducing manual intervention. The closed system composed of the protective hopper and the receiving box efficiently recovers shot, reducing waste and workshop pollution, significantly improving shot peening quality and production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of diesel engine piston rod processing technology, specifically a multi-angle rotary shot peening processing device for large marine diesel engine piston rods. Background Technology

[0002] In the diesel engine manufacturing process, the piston rod, as a key transmission component, needs to be shot peened to improve its surface hardness and fatigue strength. Existing shot peening equipment generally suffers from the following problems:

[0003] Traditional shot peening guns are fixed in one direction, and the piston rod can only rotate along the axis, resulting in insufficient shot peening coverage in the circumference and end of the rod. In particular, it is difficult to effectively treat the head of the piston rod, which easily leads to stress concentration.

[0004] Low level of automation: manual adjustment of shot peening angle or changing of workpiece posture is inefficient;

[0005] Incomplete shot blasting recovery: The open shot blasting environment causes shot to scatter, resulting in a low recovery rate. This not only wastes materials but also requires frequent cleaning of the workshop, increasing production costs.

[0006] To address this, a multi-angle rotary shot peening device for piston rods of large marine diesel engines is proposed. Utility Model Content

[0007] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a multi-angle rotary shot peening device for piston rods of large marine diesel engines, so as to solve the problems mentioned in the background art.

[0008] To solve the above-mentioned technical problems, this utility model provides the following technical solution.

[0009] This utility model provides a multi-angle rotary shot peening processing device for piston rods of large marine diesel engines, including a base and a shot peening gun. A bracket is fixedly provided on the top of the base, a transverse mechanism is provided on the top of the bracket, a first cylinder is fixedly provided on the bottom of the transverse mechanism, an angle adjustment mechanism is provided on the moving end of the first cylinder, and the shot peening gun is located at the bottom of the angle adjustment mechanism.

[0010] A protective bucket is provided above the base. A support rod is fixed between the bottom of the protective bucket and the top of the base. Two rollers are rotatably provided inside the protective bucket. One end of each roller extends to the outside of the protective bucket and is provided with a drive mechanism.

[0011] A PLC controller is fixedly installed on the side wall of the bracket, and the shot peening gun, the first cylinder, the lateral movement mechanism, the angle adjustment mechanism and the drive mechanism are all electrically connected to the PLC controller.

[0012] Preferably, the lateral movement mechanism includes a slide rail fixedly mounted on the top of the bracket, a slider inside the slide rail, a screw rotatably mounted inside the slide rail and threadedly connected to the slider, a first motor fixedly mounted on one side of the slide rail, and the output end of the first motor fixedly connected to one end of the screw, and the bottom of the first cylinder fixedly mounted on the bottom of the slider.

[0013] Preferably, the angle adjustment mechanism includes a fixed plate fixedly mounted on the moving end of the first cylinder, a second motor fixedly mounted on the lower surface of the fixed plate, a rotating plate fixedly mounted on the output shaft of the second motor, an adjustment plate below the rotating plate, a fixed rod fixedly mounted on one side of the lower surface of the rotating plate, and the lower end of the fixed rod rotatably connected to the upper surface of the adjustment plate, a second cylinder rotatably mounted on the other side of the lower surface of the rotating plate, the moving end of the second cylinder rotatably connected to the upper surface of the adjustment plate, and the shot peening gun fixedly mounted on the lower surface of the adjustment plate.

[0014] Preferably, the rotating plate can be driven to rotate circumferentially by a second motor, and the adjusting plate can be extended and pushed by a second cylinder at an angle ranging from 0° to 90°.

[0015] Preferably, the drive mechanism includes a fixed cover fixedly disposed on the side wall of the protective bucket, a third motor fixedly disposed on the side wall of the fixed cover, two rollers extending into the interior of the fixed cover and fixedly disposed on sprockets, a chain meshing between the two sprockets, and the output shaft of the third motor fixedly connected to one end of one of the rollers.

[0016] Preferably, the bottom of the protective bucket has a trapezoidal structure, and the bottom of the protective bucket is provided with a discharge port.

[0017] Preferably, a receiving box is placed on top of the base and below the outlet of the protective hopper.

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

[0019] Coordinated circumferential and axial motion: The roller drives the piston rod to rotate 360°, and in conjunction with the shot peening gun, it achieves full axial movement (the stroke covers the piston rod from head to tail) through the transverse mechanism (slide rail, slider, screw), which solves the problem of "single-point shot peening and insufficient axial coverage" in traditional devices; at the same time, the angle adjustment mechanism (second motor, rotating plate, second cylinder) allows the shot peening gun to rotate 360° circumferentially and the tilt angle to be adjustable from 0° to 90°, so as to achieve multi-angle impact on complex parts such as piston rod body, head transition rounded corner, and end (such as vertical shot peening to strengthen the plane, 45° tilt shot peening to treat the arc surface), reducing the risk of stress concentration.

[0020] Recovery system: The discharge port at the trapezoidal bottom of the protective bucket works in conjunction with the receiving box to allow the shot to be automatically recovered by gravity during the shot peening process, which improves the recovery rate compared to traditional open shot peening. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0022] Figure 2 This is a three-dimensional structural diagram of the transverse movement mechanism of this utility model;

[0023] Figure 3 This is a three-dimensional structural diagram of the angle adjustment mechanism of this utility model;

[0024] Figure 4 This is a three-dimensional structural diagram of the protective bucket of this utility model from a top-down perspective.

[0025] In the diagram: 1. Base; 2. Shot peening gun; 3. Support; 4. First cylinder; 5. Protective bucket; 6. Support rod; 7. Roller; 8. PLC controller; 9. Slide rail; 10. Slider; 11. Screw; 12. First motor; 13. Fixing plate; 14. Second motor; 15. Rotating plate; 16. Adjusting plate; 17. Fixing rod; 18. Second cylinder; 19. Fixing cover; 20. Third motor; 21. Sprocket; 22. Chain; 23. Receiving box. Detailed Implementation

[0026] A multi-angle rotary shot peening device for large marine diesel engine piston rods, such as Figure 1-4 As shown, the device includes a base 1 and a shot peening gun 2. A bracket 3 is fixedly mounted on the top of the base 1. A horizontal movement mechanism is provided on the top of the bracket 3. The horizontal movement mechanism includes a slide rail 9 fixedly mounted on the top of the bracket 3. A slider 10 is provided inside the slide rail 9. A screw 11 is rotatably mounted inside the slide rail 9 and is threadedly connected to the slider 10. A first motor 12 is fixedly mounted on one side of the slide rail 9, and the output end of the first motor 12 is fixedly connected to one end of the screw 11. The bottom of the first cylinder 4 is fixedly mounted on the bottom of the slider 10. When the first motor 12 operates, it drives the screw 11 to rotate, and the slider 10, which is threadedly connected to the screw 11, moves horizontally along the slide rail 9.

[0027] The moving end of the first cylinder 4 is provided with an angle adjustment mechanism. The shot peening gun 2 is located at the bottom of the angle adjustment mechanism. The angle adjustment mechanism includes a fixed plate 13 fixedly mounted on the moving end of the first cylinder 4. A second motor 14 is fixedly mounted on the lower surface of the fixed plate 13. A rotating plate 15 is fixedly mounted on the output shaft of the second motor 14. An adjustment plate 16 is located below the rotating plate 15. A fixed rod 17 is fixedly mounted on one side of the lower surface of the rotating plate 15, and the lower end of the fixed rod 17 is rotatably connected to the upper surface of the adjustment plate 16. A second cylinder 18 is rotatably mounted on the other side of the lower surface of the rotating plate 15. The moving end of the second cylinder 18 is rotatably connected to the upper surface of the adjustment plate 16. The shot peening gun 2 is fixedly mounted on the lower surface of the adjustment plate 16. The rotating plate 15 can be driven to rotate circumferentially by the second motor 14. The adjustment plate 16 can be extended and pushed by the second cylinder 18 at an angle range of 0°-90°.

[0028] A protective bucket 5 is provided above the base 1. A support rod 6 is fixed between the bottom of the protective bucket 5 and the top of the base 1. The bottom of the protective bucket 5 adopts a trapezoidal structure and has a discharge port. A receiving box 23 is placed on the top of the base 1 and below the discharge port of the protective bucket 5 to reduce material waste and meet the requirements of environmentally friendly production. Two rollers 7 are rotatably provided inside the protective bucket 5. One end of each roller 7 extends to the outside of the protective bucket 5 and is provided with a drive mechanism. The drive mechanism includes a fixed cover 19 fixedly set on the side wall of the protective bucket 5. A third motor 20 is fixedly installed on the side wall of the fixed cover 19. A sprocket 21 is fixedly installed inside the fixed cover 19 on each of the two rollers 7. A chain 22 meshes between the two sprockets 21. The output shaft of the third motor 20 is fixedly connected to one end of one of the rollers 7. After the third motor 20 is started, its output shaft drives one of the rollers 7 to rotate. Through the transmission of the sprocket 21 and the chain 22, the two rollers 7 rotate synchronously in opposite directions, thereby driving the piston rod to rotate smoothly around the axis.

[0029] A PLC controller 8 is fixedly mounted on the side wall of the bracket 3. The shot peening gun 2, the first cylinder 4, the transverse movement mechanism, the angle adjustment mechanism and the drive mechanism are all electrically connected to the PLC controller 8.

[0030] In summary: First, the piston rod of the large marine diesel engine is placed on two idler rollers 7 inside the protective bucket 5. The idler rollers 7 are rotatably connected to the protective bucket 5 through bearings. After the third motor 20 of the drive mechanism is started, its output shaft drives one of the idler rollers 7 to rotate. Through the transmission of the sprocket 21 and the chain 22, the two idler rollers 7 rotate synchronously in opposite directions, thereby driving the piston rod to rotate smoothly around the axis, providing the basic motion for circumferential shot peening.

[0031] When the PLC controller 8 issues a command, the first motor 12 drives the screw 11 to rotate, and the slider 10, which is threadedly connected to the screw 11, moves horizontally along the slide rail 9. Then, the first cylinder 4 drives the shot peening gun 2 to move axially along the piston rod, covering the entire processing area from the rod body to the head, thus solving the problem of insufficient axial coverage of traditional devices.

[0032] After issuing a command by operating the PLC controller 8, the second motor 14 is started to drive the rotating plate 15 to rotate around the vertical axis, which drives the shot peening gun 2 fixed to the adjusting plate 16 to rotate synchronously. At the same time, when the second cylinder 18 is extended and retracted by operating the PLC controller 8, it pushes the adjusting plate 16 to rotate around the fixed rod 17, so that the spraying direction of the shot peening gun 2 forms different angles with the piston rod surface. For example, vertical spraying is used to strengthen the surface, and inclined spraying is used to process the transition rounded corners. Through the combination of multiple angles, shot peening without dead angles on the entire surface can be achieved. In addition, it can ensure that the two ends of the piston rod can be impacted by shot at different angles.

[0033] During the shot peening process, the shot material and debris that impact the workpiece at high speed are blocked by the protective bucket 5. Since the bottom of the protective bucket 5 adopts a trapezoidal structure and is equipped with a discharge port, the shot material automatically slides into the receiving box 23 on the base 1 under the action of gravity, reducing material waste and meeting the requirements of environmentally friendly production.

[0034] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A multi-angle rotary shot peening device for large marine diesel engine piston rods, comprising a base (1) and a shot peening gun (2), characterized in that: The base (1) is fixedly provided with a bracket (3) at the top, the bracket (3) is provided with a transverse mechanism at the top, the transverse mechanism is fixedly provided with a first cylinder (4) at the bottom, the moving end of the first cylinder (4) is provided with an angle adjustment mechanism, and the shot blasting gun (2) is located at the bottom of the angle adjustment mechanism. A protective bucket (5) is provided above the base (1). A support rod (6) is fixed between the bottom of the protective bucket (5) and the top of the base (1). Two rollers (7) are rotatably provided inside the protective bucket (5). One end of each roller (7) extends to the outside of the protective bucket (5) and is provided with a drive mechanism. The side wall of the bracket (3) is fixedly equipped with a PLC controller (8), and the shot blasting gun (2), the first cylinder (4), the transverse movement mechanism, the angle adjustment mechanism and the drive mechanism are all electrically connected to the PLC controller (8).

2. The multi-angle rotary shot blasting device for a piston rod of a large marine diesel engine according to claim 1, characterized by: The transverse mechanism includes a slide rail (9) fixedly mounted on the top of the bracket (3), a slider (10) is provided inside the slide rail (9), a screw (11) is rotatably mounted inside the slide rail (9), and the screw (11) is threadedly connected to the slider (10). A first motor (12) is fixedly mounted on one side of the slide rail (9), and the output end of the first motor (12) is fixedly connected to one end of the screw (11). The bottom of the first cylinder (4) is fixedly mounted on the bottom of the slider (10).

3. The multi-angle rotary shot blasting device for a piston rod of a large marine diesel engine according to claim 1, characterized by: The angle adjustment mechanism includes a fixed plate (13) fixedly mounted on the moving end of the first cylinder (4), a second motor (14) fixedly mounted on the lower surface of the fixed plate (13), a rotating plate (15) fixedly mounted on the output shaft of the second motor (14), an adjustment plate (16) mounted below the rotating plate (15), a fixed rod (17) fixedly mounted on one side of the lower surface of the rotating plate (15), and the lower end of the fixed rod (17) rotatably connected to the upper surface of the adjustment plate (16), a second cylinder (18) rotatably mounted on the other side of the lower surface of the rotating plate (15), and the moving end of the second cylinder (18) rotatably connected to the upper surface of the adjustment plate (16), and the shot peening gun (2) fixedly mounted on the lower surface of the adjustment plate (16).

4. The multi-angle rotary shot blasting device for a piston rod of a large marine diesel engine according to claim 3, characterized by: The rotating plate (15) can be driven to rotate circumferentially by the second motor (14), and the adjusting plate (16) can be extended and pushed by the second cylinder (18) with an angle range of 0°-90°.

5. The multi-angle rotary shot blasting device for a piston rod of a large marine diesel engine according to claim 1, characterized by: The drive mechanism includes a fixed cover (19) fixedly mounted on the side wall of the protective bucket (5). A third motor (20) is fixedly mounted on the side wall of the fixed cover (19). Both rollers (7) extend into the interior of the fixed cover (19) and are fixedly mounted with sprockets (21). A chain (22) meshes between the two sprockets (21). The output shaft of the third motor (20) is fixedly connected to one end of one of the rollers (7).

6. The multi-angle rotary shot blasting device for a piston rod of a large marine diesel engine according to claim 1, characterized by: The bottom of the protective bucket (5) adopts a trapezoidal structure, and the bottom of the protective bucket (5) is provided with a discharge port.

7. The multi-angle rotary shot peening device for large marine diesel engine piston rods according to claim 6, characterized in that: A receiving box (23) is placed on top of the base (1) and below the outlet of the protective bucket (5).

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