Strengthening treatment device for piston pin of marine diesel engine
By using a displacement device to change the position of the piston pins in the cooling pool, the problem of multiple piston pins accumulating during quenching was solved, the quenching cooling efficiency was improved, and the effectiveness of the strengthening treatment device was enhanced.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-13
- Publication Date
- 2026-03-10
AI Technical Summary
When multiple piston pins are quenched simultaneously, they will accumulate at the bottom of the cooling pool, causing some areas to overlap, which affects the quenching and cooling effect, and consequently affects the performance of the strengthening treatment device.
A displacement device is used to change the position of the piston pins inside the cooling pool. Through the cooperation of the fixing components and the displacement device, it is ensured that multiple piston pins do not accumulate during the quenching process. The quenching is carried out by heating with electromagnetic coils and cooling water.
This effectively avoids the accumulation and overlap of piston pins at the bottom of the cooling pool, improves the efficiency of quenching and cooling, and thus enhances the performance of the strengthening treatment device.
Smart Images
Figure CN223983677U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of diesel engine piston pin technology, and in particular to a strengthening treatment device for marine diesel engine piston pins. Background Technology
[0002] Enhancement processing devices are devices that strengthen objects through physical, chemical, or other methods to improve their performance.
[0003] When strengthening piston pins in marine diesel engines, the piston pins undergo carburizing to create a high-carbon layer on their surface. Subsequently, an electromagnetic coil heats the piston pins, which are then quenched in a cooling bath with cooling water to increase surface hardness, thus completing the strengthening process. However, when multiple piston pins are quenched simultaneously, they can accumulate at the bottom of the cooling bath, causing partial overlap. This hinders the rapid cooling of the piston pins during quenching, negatively impacting the effectiveness of the strengthening process. Utility Model Content
[0004] This invention addresses the problem that when multiple piston pins are quenched simultaneously, they accumulate at the bottom of the cooling pool, causing partial overlap and hindering rapid quenching and cooling of the pistons, thus affecting the effectiveness of the strengthening treatment device. Therefore, this invention provides a strengthening treatment device for marine diesel engine piston pins.
[0005] To achieve the above objectives, the present invention adopts the following technical solution: a strengthening treatment device for piston pins of marine diesel engines, comprising a cooling pool and a fixing component, wherein an electromagnetic coil is provided on one side of the cooling pool, and a displacement device is provided on one side of the cooling pool by means of the fixing component, the displacement device changing the position of the piston pin inside the cooling pool.
[0006] The effect achieved by the above-mentioned components is as follows: when strengthening the piston pin of a marine diesel engine, the displacement device is fixed inside the cooling pool by the fixing component, and then the piston pin is carburized to obtain a high carbon layer on the surface of the piston pin. Subsequently, the piston pin is heated by the electromagnetic coil and placed in the cooling pool with cooling water for quenching. At this time, the displacement device changes the position of the piston pin. After quenching, the surface hardness of the piston pin is increased, and then the strengthening treatment of the piston pin is completed.
[0007] Preferably, the displacement device includes a placement frame, a motor is provided on one side of the placement frame, a half gear is fixedly connected to the output end of the motor, a first spring is fixedly connected to the side of the placement frame near the motor, a toothed plate is fixedly connected to the side of the first spring near the half gear, the toothed plate meshes with the half gear, a storage frame is fixedly connected to the side of the toothed plate near the cooling pool, the size of the storage frame is adapted to the size of the cooling pool, and a plurality of through holes are opened on the surface of the storage frame, the size of the plurality of through holes on the surface of the storage frame being smaller than the size of the piston pin.
[0008] The effect achieved by the above-mentioned components is as follows: When multiple piston pins are placed in the storage box inside the cooling pool, the motor on the placement rack can be started, causing the motor to drive the half gear to rotate. Then, the half gear drives the toothed plate to move. At this time, the first spring is compressed, and the toothed plate drives the storage box to move. After the teeth of the half gear disengage from the toothed plate, the first spring returns to its original position, driving the toothed plate to return to its original position. Then, the storage box is returned to its original position, completing one repositioning of the storage box. At this time, the multiple piston pins inside the storage box are moved by the storage box, thus separating the contact areas of the multiple piston pins. This allows the multiple piston pins to be better quenched and cooled by the cooling water inside the cooling pool. By using the displacement device, the position of the multiple piston pins inside the cooling pool can be changed, thus avoiding the accumulation of multiple piston pins at the bottom of the cooling pool when multiple piston pins are quenched simultaneously. This would cause some areas of the piston pins to overlap, which would affect the rapid quenching and cooling of the pistons. Therefore, the effectiveness of the strengthening treatment device can be improved.
[0009] Preferably, a stabilizing rod is sleeved inside the first spring, one side of the stabilizing rod is fixedly connected to the toothed plate, and the other side of the stabilizing rod is slidably connected to the placement frame.
[0010] The effect achieved by the above-mentioned components is that by using the stabilizer bar, the shape of the first spring can be restricted, preventing the first spring from bending under force and affecting its subsequent use.
[0011] Preferably, sponge blocks are fixedly connected to two corners of the placement rack, and the size of the sponge blocks is adapted to the size of the placement rack.
[0012] The effect achieved by the above-mentioned components is to prevent operators from being injured by collisions with the corners of the rack by using sponge blocks, thereby improving the usability of the rack.
[0013] Preferably, a limiting component is provided on one side of the placement rack.
[0014] The effect achieved by the above components is that by using the limiting components, the movement trajectory of the storage box can be restricted, making the storage box move more stably.
[0015] Preferably, the limiting component includes a slide rail, one side of which is fixedly connected to the placement rack, a limiting plate is slidably connected to one side of the slide rail, and one side of the limiting plate is fixedly connected to the storage frame.
[0016] The effect achieved by the above components is that the storage frame moves more stably inside the slide rail by moving the limiting plate on one side of the storage frame, thereby improving the performance of the displacement device.
[0017] Preferably, the fixing component includes a square tube, one side of which is fixedly connected to the cooling pool, a locking block is inserted into one side of the square tube, a second spring is fixedly connected to one side of the locking block, one side of the second spring is fixedly connected to the square tube, a fixing plate is engaged with one side of the locking block, and one side of the fixing plate is fixedly connected to the placement frame.
[0018] The effect achieved by the above components is as follows: When using the displacement device, move the locking block away from the square tube. At this point, the second spring is stretched. Then, insert the fixing plate at one end of the placement frame into the square tube, release the locking block, and the second spring returns to its original position. Then, drive the locking block to the inside of the square tube and engage with the fixing plate. This quickly completes the fixing of the placement frame position. By using the fixing components, the position of the displacement device can be quickly fixed, making it convenient for operators to use the displacement device subsequently.
[0019] Preferably, a trapezoidal block is fixedly connected to one side of the fixing plate, and the size of the trapezoidal block on the side away from the fixing plate is smaller than the size of the other side.
[0020] The effect achieved by the above components is to reduce the size of one side of the fixing plate by using trapezoidal blocks, making it easier to insert the fixing plate into the square tube.
[0021] In summary, the beneficial effects of this utility model are as follows:
[0022] By using a displacement device, the positions of multiple piston pins inside the cooling pool can be changed, thus preventing multiple piston pins from accumulating at the bottom of the cooling pool when quenching multiple piston pins simultaneously. This would prevent the piston pins from partially overlapping, which would hinder the rapid quenching and cooling of the pistons, thereby improving the effectiveness of the strengthening treatment device. Attached Figure Description
[0023] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0024] Figure 2 This is a three-dimensional structural diagram of the displacement device of this utility model;
[0025] Figure 3 This utility model Figure 2A schematic diagram of a partial three-dimensional structure;
[0026] Figure 4 This is a three-dimensional structural diagram of the fixing component of this utility model.
[0027] Legend: 1. Cooling pool; 2. Displacement device; 21. Placement rack; 22. Motor; 23. Half gear; 24. First spring; 25. Tooth plate; 26. Storage frame; 27. Through hole; 28. Stabilizing rod; 29. Sponge block; 210. Limiting component; 2101. Slide rail; 2102. Limiting plate; 3. Fixing component; 31. Square tube; 32. Locking block; 33. Second spring; 34. Fixing plate; 35. Trapezoidal block; 4. Electromagnetic coil. Detailed Implementation
[0028] Reference Figures 1-4 As shown, this embodiment discloses a strengthening treatment device for marine diesel engine piston pins, including a cooling tank 1 and a fixing assembly 3. An electromagnetic coil 4 is provided on one side of the cooling tank 1, and a displacement device 2 is provided on the other side of the cooling tank 1 via the fixing assembly 3. The displacement device 2 changes the position of the piston pin inside the cooling tank 1. During the strengthening treatment of the marine diesel engine piston pin, the displacement device 2 is fixed inside the cooling tank 1 via the fixing assembly 3. Then, the piston pin undergoes carburizing treatment to obtain a high-carbon layer on its surface. Subsequently, the electromagnetic coil 4 heats the piston pin, and it is placed inside the cooling tank 1 containing cooling water for quenching. During this process, the displacement device 2 changes the position of the piston pin. After quenching, the surface hardness of the piston pin is increased, thus completing the strengthening treatment of the piston pin.
[0029] Reference Figures 1-4As shown, this embodiment discloses a displacement device 2 including a placement frame 21. A motor 22 is provided on one side of the placement frame 21. A half gear 23 is fixedly connected to the output end of the motor 22. A first spring 24 is fixedly connected to the side of the placement frame 21 near the motor 22. A toothed plate 25 is fixedly connected to the side of the first spring 24 near the half gear 23. The toothed plate 25 meshes with the half gear 23. A storage frame 26 is fixedly connected to the side of the toothed plate 25 near the cooling pool 1. The size of the storage frame 26 is adapted to the size of the cooling pool 1. A plurality of through holes 27 are opened on the surface of the storage frame 26. The size of the plurality of through holes 27 on the surface of the storage frame 26 is smaller than the size of the piston pin. When multiple piston pins are placed into the storage box inside the cooling pool 1, the motor 22 on the placement rack 21 can be started, causing the motor 22 to drive the half gear 23 to rotate. Then, the half gear 23 drives the toothed plate 25 to move. At this time, the first spring 24 will be compressed, and the toothed plate 25 drives the storage box 26 to move. After the teeth of the half gear 23 disengage from the toothed plate 25, the first spring 24 returns to its original position, driving the toothed plate 25 to return to its original position. Then, the storage box 26 is returned to its original position, completing one repositioning of the storage box 26. At this time, the multiple piston pins inside the storage box 26 will be moved by the storage box 26, thus separating the contact areas of the multiple piston pins. This allows the multiple piston pins to be better quenched and cooled by the cooling water inside the cooling pool 1. By using the displacement device 2, the position of the multiple piston pins inside the cooling pool 1 can be changed, thus avoiding the accumulation of multiple piston pins at the bottom of the cooling pool 1 when multiple piston pins are quenched at the same time, which would cause some areas of the piston pins to overlap and affect the rapid quenching and cooling of the pistons. This improves the effectiveness of the strengthening treatment device.
[0030] Reference Figures 1-4 As shown, this embodiment discloses a stabilizing rod 28 internally fitted into the first spring 24. One side of the stabilizing rod 28 is fixedly connected to the toothed plate 25, and the other side is slidably connected to the placement frame 21. By using the stabilizing rod 28, the shape of the first spring 24 can be restricted, preventing the first spring 24 from bending under force and affecting its subsequent use. Sponge blocks 29 are fixedly connected to both corners of the placement frame 21, and the size of the sponge blocks 29 is adapted to the size of the placement frame 21. By using the sponge blocks 29, collision damage to the operator at the corners of the placement frame 21 is prevented, thereby improving the usability of the placement frame 21.
[0031] Reference Figures 1-4As shown, this embodiment discloses a limiting component 210 on one side of the placement rack 21. By using the limiting component 210, the movement trajectory of the storage frame 26 can be restricted, making the storage frame 26 move more stably. The limiting component 210 includes a slide rail 2101, one side of which is fixedly connected to the placement rack 21, and a limiting plate 2102 is slidably connected to one side of the slide rail 2101. One side of the limiting plate 2102 is fixedly connected to the storage frame 26. By moving the limiting plate 2102 on one side of the storage frame 26 within the slide rail 2101, the storage frame 26 moves more stably, thereby improving the performance of the displacement device 2.
[0032] Reference Figures 1-4 As shown, this embodiment discloses a fixing component 3 including a square tube 31. One side of the square tube 31 is fixedly connected to the cooling pool 1. A locking block 32 is inserted into one side of the square tube 31. A second spring 33 is fixedly connected to one side of the locking block 32. One side of the second spring 33 is fixedly connected to the square tube 31. A fixing plate 34 is engaged with one side of the locking block 32. One side of the fixing plate 34 is fixedly connected to the placement frame 21. When using the displacement device 2, the locking block 32 is moved away from the square tube 31, where the second spring 33 is stretched. Then, the fixing plate 34 at one end of the placement frame 21 is inserted into the square tube 31. Then, the locking block 32 is released, and the second spring 33 returns to its original position. Then, the locking block 32 is driven to the inside of the square tube 31 and engaged with the fixing plate 34. This quickly fixes the position of the placement frame 21. By using the fixing component 3, the position of the displacement device 2 can be quickly fixed, making it convenient for operators to use the displacement device 2 subsequently.
[0033] Reference Figures 1-4 As shown, this embodiment discloses a trapezoidal block 35 fixedly connected to one side of the fixing plate 34, with the size of the trapezoidal block 35 on the side away from the fixing plate 34 being smaller than the size of the other side. By using the trapezoidal block 35, the size of one side of the fixing plate 34 is reduced, making it easier for the fixing plate 34 to be inserted into the square tube 31.
[0034] Working principle: When strengthening the piston pin of a marine diesel engine, the displacement device 2 is fixed inside the cooling pool 1 by the fixing component 3. Then, the piston pin is carburized to obtain a high carbon layer on the surface of the piston pin. Subsequently, the electromagnetic coil 4 heats the piston pin and places it in the cooling pool 1 with cooling water for quenching. At this time, the displacement device 2 changes the position of the piston pin. After quenching, the surface hardness of the piston pin is increased, and then the strengthening treatment of the piston pin is completed. When multiple piston pins are placed into the storage box inside the cooling pool 1, the motor 22 on the placement rack 21 can be started, causing the motor 22 to drive the half gear 23 to rotate. Then, the half gear 23 drives the toothed plate 25 to move. At this time, the first spring 24 will be compressed, and the toothed plate 25 drives the storage box 26 to move. At this time, the limiting plate 2102 on one side of the storage box 26 moves inside the slide rail 2101, making the storage box 26 move more stably. Then, after the teeth of the half gear 23 disengage from the toothed plate 25, the first spring 24 returns to its original position, thereby driving the toothed plate 25 to return to its original position. Immediately afterwards, the storage box 26 is reset, and the storage is completed. As the frame 26 moves back and forth, the multiple piston pins inside the frame 26 are moved along with it, thus separating the contact areas of the multiple piston pins. This allows the multiple piston pins to be better quenched and cooled by the cooling water inside the cooling pool 1. By using the displacement device 2, the position of the multiple piston pins inside the cooling pool 1 can be changed, thus preventing the multiple piston pins from accumulating at the bottom of the cooling pool 1 when quenching multiple piston pins at the same time. This would prevent the piston pins from partially overlapping, which would then affect the rapid quenching and cooling of the pistons, thereby improving the effectiveness of the strengthening treatment device.
[0035] When using the displacement device 2, move the locking block 32 away from the square tube 31. Here, the second spring 33 is stretched. Then, insert the fixing plate 34 at one end of the placement frame 21 into the square tube 31. Then, release the locking block 32. Then, the second spring 33 returns to its original position. Then, the locking block 32 moves into the square tube 31 and engages with the fixing plate 34. Then, the position of the placement frame 21 is quickly fixed. By using the fixing component 3, the position of the displacement device 2 can be quickly fixed, which makes it convenient for the operator to use the displacement device 2 later.
Claims
1. A device for the strengthening treatment of a marine diesel engine piston pin, comprising a cooling bath (1) and a fixing assembly (3), characterised in that: The side of the cooling pool (1) is provided with an electromagnetic coil (4), and the side of the cooling pool (1) is provided with a displacement device (2) by means of a fixing assembly (3), and the displacement device (2) changes the position of the piston pin inside the cooling pool (1); the displacement device (2) comprises a placing rack (21), one side of the placing rack (21) is provided with a motor (22), the output end of the motor (22) is fixedly connected with a half gear (23), the side of the placing rack (21) close to the motor (22) is fixedly connected with a first spring (24), the side of the first spring (24) close to the half gear (23) is fixedly connected with a toothed plate (25), the toothed plate (25) is engaged with the half gear (23), the side of the toothed plate (25) close to the cooling pool (1) is fixedly connected with a storage frame (26), the size of the storage frame (26) is matched with the size of the cooling pool (1), a plurality of through holes (27) are formed in the surface of the storage frame (26), and the size of the plurality of through holes (27) in the surface of the storage frame (26) is smaller than the size of the piston pin; the inside of the first spring (24) is sleeved with a stabilizing rod (28), one side of the stabilizing rod (28) is fixedly connected with the toothed plate (25), and one side of the stabilizing rod (28) is slidably connected with the placing rack (21); the two corners of the placing rack (21) are fixedly connected with sponge blocks (29), and the size of the sponge blocks (29) is matched with the size of the placing rack (21); one side of the placing rack (21) is provided with a limiting assembly (210); the limiting assembly (210) comprises a sliding rail (2101), one side of the sliding rail (2101) is fixedly connected with the placing rack (21), one side of the sliding rail (2101) is slidably connected with a limiting plate (2102), and one side of the limiting plate (2102) is fixedly connected with the storage frame (26).
2. A device for the strengthening treatment of a marine diesel engine piston pin according to claim 1, characterized in that: The fixing assembly (3) comprises a square tube (31), one side of the square tube (31) is fixedly connected with the cooling pool (1), a clamping block (32) is inserted into one side of the square tube (31), one side of the clamping block (32) is fixedly connected with a second spring (33), one side of the second spring (33) is fixedly connected with the square tube (31), and the clamping block (32) is clamped with a fixed plate (34) on one side, and one side of the fixed plate (34) is fixedly connected with the placing rack (21).
3. A device for the strengthening treatment of a marine diesel engine piston pin according to claim 2, characterized in that: One side of the fixed plate (34) is fixedly connected with a trapezoidal block (35), and the size of the side away from the fixed plate (34) is smaller than the size of the other side.