Polishing device for electric crankshaft journal of diesel engine

Abstract

The utility model discloses a diesel engine electric crankshaft journal polishing device, and belongs to the technical field of diesel engine crankshaft journal polishing. Comprising a motor and a coping and polishing device, the coping and polishing device is arranged on a journal of a crankshaft in a sleeving mode, a felt pad on the inner layer of the coping and polishing device abuts against the journal, and the motor drives the coping and polishing device to rotate. The motor is adopted as a power source, manual polishing is replaced, electric polishing is high in strength and uniform in force, the polishing speed is high, and the degree of finish is good after polishing.

Description

Technical Field

[0001] The present application belongs to the technical field of diesel engine crankshaft journal polishing, and specifically relates to a diesel engine electric crankshaft journal polishing device. Background Art

[0002] Currently, diesel engine manufacturers often require users to participate in test runs. After the test runs are completed, the piston and connecting rod assembly must be pumped out to inspect quality. In some cases, there is a risk of shaft damage. Users also need to return their engines to the factory for repair. Normal operation requires manual polishing with a felt saw. This is a very labor-intensive process, and manual polishing results in uneven polishing and poor quality. This delays maintenance work, significantly impacting profitability. Utility Model Content

[0003] The technical problem to be solved by this application is: to overcome the shortcomings of the existing technology and provide a diesel engine electric crankshaft journal polishing device. This application uses an electric motor as a power source to replace manual polishing. The electric polishing has high intensity and uniform force, fast polishing speed, and good finish after polishing.

[0004] The technical solution adopted by this application to solve the existing problems is:

[0005] A diesel engine electric crankshaft journal polishing device comprises an electric motor and a grinding and polishing device. The grinding and polishing device is sleeved on the crankshaft journal, the felt pad on the inner layer of the grinding and polishing device abuts against the journal, and the electric motor drives the grinding and polishing device to rotate.

[0006] Preferably, the electric motor is fixed on a motor mounting bracket, and the motor mounting bracket is detachably connected to the mounting hole of the diesel engine crankcase cover plate by bolts.

[0007] Preferably, the mounting frame includes a vertical plate and a horizontal plate, the motor is fixed on the horizontal plate, four through holes are provided on the vertical plate, and the four through holes correspond one to one with the mounting holes of the diesel engine crankcase cover plate, and the vertical plate is provided with a through hole.

[0008] Preferably, the motor drives the grinding and polishing device to rotate via a synchronous belt.

[0009] Preferably, the synchronous belt is a belt or a chain.

[0010] Preferably, the output shaft of the motor is connected to a driving wheel, and the grinding and polishing device is provided with a driven part, and the driving wheel drives the driven part to rotate through a synchronous belt.

[0011] Preferably, the grinding and polishing device adopts a split structure, including two detachably connected semicircular covers, the driven part is arranged on the outer wall of the semicircular cover, and a felt pad is provided on the inner side of the semicircular cover.

[0012] Preferably, a semicircular protective bearing is provided between the felt pad and the semicircular cover.

[0013] Preferably, the upper and lower semicircular covers are fixedly connected by fastening bolts.

[0014] Preferably, a connecting plate is protruded from the outer side of the bottom of the semicircular cover, and the fastening bolts pass through the connecting plates arranged opposite to each other on the upper and lower semicircular covers.

[0015] Compared with the prior art, this application has the following beneficial effects:

[0016] (1) Using electric motor as the power source instead of manual polishing, electric polishing has high intensity and uniform force, fast polishing speed and good finish after polishing.

[0017] (2) A protective bearing is provided on the outer sleeve of the felt pad to protect the shaft neck from damage in the event that the felt pad is damaged. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present application is further described below with reference to the accompanying drawings and examples.

[0019] Figure 1 This is a structural diagram of a diesel engine electric crankshaft journal polishing device after installation.

[0020] Figure 2 This is a structural diagram of a grinding and polishing tool in a diesel engine electric crankshaft journal polishing device.

[0021] Figure 3 for Figure 2 Exploded diagram of .

[0022] In the figure: 1-motor, 2-driving wheel, 3-synchronous belt, 4-grinding and polishing device, 401-semicircular cover, 402-driven part, 403-connecting plate, 404-protective bearing, 405-felt pad, 406-fastening bolt, 5-motor mounting bracket, 501-through hole, 6-crankshaft. DETAILED DESCRIPTION

[0023] For example, certain words are used in the specification and claims to refer to specific components. Those skilled in the art should understand that hardware manufacturers may use different terms to refer to the same component. This specification and claims do not use differences in names as a way to distinguish components, but use differences in the functions of the components as the criteria for distinction. For example, "including" mentioned throughout the specification and claims is an open term, so it should be interpreted as "including but not limited to". "Approximately" means that within an acceptable error range, those skilled in the art can solve the technical problem within a certain error range and basically achieve the technical effect.

[0024] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "horizontal", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are only used to facilitate the description of the present application and simplify the description. They do not indicate or imply that the devices or elements referred to must have a specific direction, be constructed and operate in a specific direction. Therefore, they should not be understood as limiting the present application.

[0025] In this application, unless otherwise specified or limited, the terms "mounted," "connected," "connect," "fixed," etc. should be understood broadly. For example, they can refer to fixed connection, detachable connection, or integral connection; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0026] The accompanying drawings are the best embodiment of the diesel engine electric crankshaft journal polishing device. The application is further described in detail below with reference to the accompanying drawings.

[0027] A diesel engine electric crankshaft journal polishing device includes a motor 1 and a grinding and polishing device 4. The grinding and polishing device 4 is sleeved on the journal of the crankshaft 6. The felt pad 405 on the inner layer of the grinding and polishing device 4 abuts against the journal. The motor 1 drives the grinding and polishing device 4 to rotate.

[0028] For ease of installation, Figure 2 as well as Figure 3 As shown, the grinding and polishing device 4 adopts a split structure, including two detachably connected semicircular covers 401, the driven part 402 is arranged on the outer wall of the semicircular cover 401, and a felt pad 405 is provided on the inner side of the semicircular cover 401.

[0029] To increase the firmness of the connection between the upper and lower semicircular covers 401, the two semicircular covers 401 are fixedly connected by fastening bolts 406. Furthermore, the outer sides of the bottoms of the semicircular covers 401 are provided with connecting plates 403, which are located on both sides of the driven portion 402. The fastening bolts 406 pass through the connecting plates 403 of the upper and lower semicircular covers 401, which are arranged opposite each other, and are screwed into the threaded holes on the two connecting plates 403.

[0030] The felt pad 405 will wear out when grinding and polishing the journal. If it is very thin or cracked, the rotating semicircular cover 401 will directly contact the journal and cause damage to the journal surface. To avoid this, a semicircular protective bearing 404 is provided between the felt pad 405 and the semicircular cover 401. The two semicircular protective bearings 404 are assembled into a complete protective bearing.

[0031] The material of the protective bearing 404 is the bearing material normally configured for the diesel engine, which can protect the journal from being damaged when the felt pad 405 is damaged.

[0032] The motor 1 is fixed on the motor mounting bracket 5, and the motor mounting bracket 5 is detachably connected to the mounting hole of the diesel engine crankcase cover plate through bolts.

[0033] Furthermore, the mounting frame 5 comprises a vertical plate and a horizontal plate, with the motor 1 secured to the horizontal plate. The vertical plate is provided with four through-holes, which correspond one-to-one with the mounting holes of the diesel engine crankcase cover. The vertical plate is provided with a through-hole 501, which is arranged opposite the crankcase observation hole. Thus, after removing the crankcase cover, the mounting frame 5 can be directly secured in its place, achieving positioning of the motor 1.

[0034] The motor 1 drives the grinding and polishing device 4 to rotate through the synchronous belt 3. The synchronous belt 3 is a belt or a chain. In this embodiment, a chain is used. The chain can drive the grinding and polishing device 4 to rotate in a relatively loose state, which is convenient for disassembly and assembly of the grinding and polishing device 4.

[0035] The output shaft of the motor 1 is connected to a driving wheel 2 , and the grinding and polishing device 4 is provided with a driven part 402 . The driving wheel 2 drives the driven part 402 to rotate through a synchronous belt 3 .

[0036] The above describes the implementation methods of the present application in detail in conjunction with the accompanying drawings, but the present application is not limited to the above implementation methods. Various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present application.

Claims

1. A diesel engine electric crankshaft journal polishing device, characterized in that: The invention comprises an electric motor (1) and a grinding and polishing device (4). The grinding and polishing device (4) is sleeved on the journal of a crankshaft (6). The felt pad (405) on the inner layer of the grinding and polishing device (4) abuts against the journal. The electric motor (1) drives the grinding and polishing device (4) to rotate.

2. The diesel engine electric crankshaft journal polishing device according to claim 1, characterized in that: The motor (1) is fixed on a motor mounting frame (5), and the motor mounting frame (5) is detachably connected to the mounting hole of the diesel engine crankcase cover plate via bolts.

3. The diesel engine electric crankshaft journal polishing device according to claim 2, characterized in that: The mounting frame (5) comprises a vertical plate and a horizontal plate. The motor (1) is fixed on the horizontal plate. The vertical plate is provided with four through holes, which correspond to the mounting holes of the diesel engine crankcase cover plate one by one. The vertical plate is provided with a through hole (501).

4. A diesel engine electric crankshaft journal polishing device according to claim 1, 2 or 3, characterized in that: The motor (1) drives the grinding and polishing device (4) to rotate via a synchronous belt (3).

5. The diesel engine electric crankshaft journal polishing device according to claim 4, characterized in that: The synchronous belt (3) is a belt or a chain.

6. The diesel engine electric crankshaft journal polishing device according to claim 4, characterized in that: The output shaft of the motor (1) is connected to a driving wheel (2), and the grinding and polishing device (4) is provided with a driven part (402). The driving wheel (2) drives the driven part (402) to rotate through a synchronous belt (3).

7. The diesel engine electric crankshaft journal polishing device according to claim 6, characterized in that: The grinding and polishing device (4) adopts a split structure, comprising two upper and lower detachably connected semicircular covers (401), the driven part (402) is arranged on the outer wall of the semicircular cover (401), and a felt pad (405) is provided on the inner side of the semicircular cover (401).

8. The diesel engine electric crankshaft journal polishing device according to claim 7, characterized in that: A semicircular protective bearing (404) is provided between the felt pad (405) and the semicircular cover (401).

9. A diesel engine electric crankshaft journal polishing device according to claim 7 or 8, characterized in that: The upper and lower semicircular covers (401) are fixedly connected by fastening bolts (406).

10. The diesel engine electric crankshaft journal polishing device according to claim 9, characterized in that: A connecting plate (403) is protruded from the outer side of the bottom of the semicircular cover (401), and a fastening bolt (406) passes through the connecting plates (403) arranged opposite to each other on the upper and lower semicircular covers (401).

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