Crank polishing device

Abstract

The utility model provides a crank polishing device, and relates to the technical field of crank machining, the crank polishing device comprises a support used for being installed on a crank main journal lathe; the polishing mechanism comprises a driving motor, a transmission roller, a driven roller and a polishing belt, the driving motor and the driven roller are both installed on the support, the output end of the driving motor is sleeved with the transmission roller, the polishing belt is wound around the transmission roller and the driven roller, and the rough surface of the polishing belt makes contact with the surface of the crank so that the crank can be ground and polished. According to the crank polishing device provided by the invention, the problem that the crank shakes during rotation due to local heat accumulation on the surface in the polishing process of the crank can be solved.

Description

Technical Field

[0001] This application relates to the field of crankshaft machining technology, and more particularly to a crankshaft polishing device. Background Technology

[0002] The crankshaft, as an important component of the diesel engine of an internal combustion locomotive, can withstand the force transmitted from the engine connecting rod and convert the force into torque, which is output by the rotation of the crankshaft to drive other accessories on the engine. Because the crankshaft is in a high-temperature and high-pressure environment for a long time, the surface of the crankshaft needs to be polished to improve its wear resistance and fatigue strength.

[0003] In existing crank polishing technology, the crank is usually placed in an abrasive box containing polishing abrasives such as olive pits and rotated at high speed, so that the surface of the crank collides fully with the polishing abrasive during rotation to remove surface burrs and other minor defects.

[0004] However, polishing abrasives are generally small particles, which can easily lead to uneven contact with the crankshaft surface during crankshaft polishing, causing localized heat buildup on the crankshaft surface, resulting in vibration during rotation and affecting the normal operation of the engine. Utility Model Content

[0005] In view of this, this application provides a crank polishing device that can solve the problem of crankshaft vibration during rotation caused by localized heat accumulation on the surface during the polishing process.

[0006] To achieve the above objectives, this application provides a crank polishing device, which adopts the following technical solution:

[0007] This application provides a crank polishing device, including:

[0008] A bracket for mounting on the crank spindle journal lathe;

[0009] The polishing mechanism includes a drive motor, a transmission roller, a driven roller, and a polishing belt. The drive motor and the driven roller are both mounted on the bracket. The transmission roller is sleeved on the output end of the drive motor. The polishing belt is wound around the transmission roller and the driven roller, and the rough surface of the polishing belt is in contact with the surface of the crank to polish the crank.

[0010] One possible implementation also includes a rotating component;

[0011] The rotating assembly includes a rotating component and a rotating shaft. The rotating component is rotatably connected to the crank spindle journal lathe via the rotating shaft. The bracket is connected to the rotating component to follow the rotation of the rotating component relative to the crank spindle journal lathe.

[0012] In one possible implementation, the rotating member is used to be inserted between two lugs on the crank spindle journal lathe, and the rotating shaft is used to be inserted on the rotating member between the lugs and the two lugs.

[0013] In one possible implementation, the bracket has a handle extending from the side near the rotating assembly.

[0014] In one possible implementation, the surface of the handle is covered with rubber.

[0015] In one possible implementation, the support is equipped with a counterweight.

[0016] In one possible implementation, the polishing mechanism further includes an adjusting roller movably mounted on the support, with its circumferential side contacting the surface of the polishing belt to adjust the tension of the polishing belt.

[0017] One possible implementation also includes a regulating component;

[0018] The adjustment assembly includes an adjustment arm and a drive rod. The adjustment arm is rotatably mounted on the bracket, and the adjustment roller is mounted on the adjustment arm. The drive end of the drive rod is connected to the adjustment arm to drive the adjustment arm to rotate relative to the bracket, thereby changing the position of the adjustment roller.

[0019] In one possible implementation, the driving rod is a hydraulic telescopic rod.

[0020] In one possible implementation, the polishing belt is an 80-120 mesh abrasive belt.

[0021] This application provides a crank polishing device, which includes a support and a polishing mechanism, wherein the polishing mechanism includes a drive motor, a transmission roller, a driven roller and a polishing belt.

[0022] The polishing belt is wound around the drive roller and the driven roller. The friction generated by the contact between the drive roller and the surface of the polishing belt converts the rotation of the drive roller into the power for the polishing belt to circulate between the drive roller and the driven roller. When polishing the crank surface is required, simply place the rough surface of the polishing belt against the crank surface and start the drive motor. Under the action of the drive motor, the polishing belt circulates between the drive roller and the driven roller, fully rubbing the crank surface to remove burrs and other minor defects, thus completing the polishing operation.

[0023] Compared with the existing crank polishing methods, the crank polishing device provided in this application has a larger and more uniform contact area with the crank surface during the polishing process, which solves the problem of crank shaking during rotation caused by local heat accumulation on the crank surface. Attached Figure Description

[0024] The specific implementation of the embodiments of this application will be described in detail below with reference to the accompanying drawings. It should be understood that the specific implementation described herein is only for illustration and explanation of the embodiments of this application, and the embodiments of this application are not limited to the specific implementation described below.

[0025] Figure 1 This is an assembly diagram of the crank polishing device provided in the embodiments of this application;

[0026] Figure 2 An assembly top view of the crank polishing apparatus provided in the embodiments of this application;

[0027] Figure 3 This is a schematic diagram of the crank polishing device provided in the embodiments of this application;

[0028] Figure 4 This is a side view of the structure of the crank polishing apparatus provided in an embodiment of this application.

[0029] Explanation of reference numerals in the attached figures:

[0030] 100-Standard;

[0031] 110 - handle;

[0032] 200-Polishing mechanism;

[0033] 210 - Drive motor;

[0034] 220 - Transmission roller;

[0035] 230 - Driven roller;

[0036] 240-polishing belt;

[0037] 250 - Adjustment component;

[0038] 251-Adjusting arm; 252-Drive rod; 253-Adjusting roller;

[0039] 300-Rotation assembly;

[0040] 310 - Rotating component; 320 - Rotating shaft; 330 - Ear seat;

[0041] 400-counterweight.

[0042] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the embodiments of this application in any way, but rather to illustrate the concepts of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0043] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application and how the technical solutions of the embodiments of this application solve the above-mentioned technical problems will be clearly and completely described below with reference to specific embodiments and the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0044] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, an indirect connection through an intermediate medium, or 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 the embodiments of this application according to the specific circumstances.

[0045] In the description of the embodiments of this application, it should be understood that the terms "upper", "lower", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., 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 the embodiments of this application and simplifying the description, and do not 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 the embodiments of this application.

[0046] The terms "first," "second," "third," "fourth," etc. (if present) in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein.

[0047] In this application, the terms "exemplary" or "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described as "exemplary" or "for example" in this application should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of terms such as "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.

[0048] Furthermore, the terms “comprising” and “having”, and any variations thereof, are intended to cover non-exclusive inclusion, such that a process, method, system, product, or apparatus that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or apparatus.

[0049] The crankshaft, as an important component of the diesel engine of an internal combustion locomotive, can withstand the force transmitted from the engine connecting rod and convert the force into torque, which is output by the rotation of the crankshaft to drive other accessories on the engine. Because the crankshaft is in a high-temperature and high-pressure environment for a long time, the surface of the crankshaft needs to be polished to improve its wear resistance and fatigue strength.

[0050] In existing crank polishing technology, the crank is usually placed in an abrasive box containing polishing abrasives such as olive pits and rotated at high speed, so that the surface of the crank collides fully with the polishing abrasive during rotation to remove surface burrs and other minor defects.

[0051] However, polishing abrasives are generally small particles, which can easily lead to uneven contact with the crankshaft surface during crankshaft polishing, causing localized heat buildup on the crankshaft surface, resulting in vibration during rotation and affecting the normal operation of the engine.

[0052] Based on this, an embodiment of this application provides a crank polishing device, including a bracket and a polishing mechanism, wherein the polishing mechanism includes a drive motor, a transmission roller, a driven roller and a polishing belt.

[0053] The polishing belt is wound around the drive roller and the driven roller. The friction generated by the contact between the drive roller and the surface of the polishing belt converts the rotation of the drive roller into the power for the polishing belt to circulate between the drive roller and the driven roller. When polishing the crank surface is required, simply place the rough surface of the polishing belt against the crank surface and start the drive motor. Under the action of the drive motor, the polishing belt circulates between the drive roller and the driven roller, fully rubbing the crank surface to remove burrs and other minor defects, thus completing the polishing operation.

[0054] Compared with the existing crank polishing methods, the crank polishing device provided in this application has a larger and more uniform contact area with the crank surface during the polishing process, which solves the problem of crank shaking during rotation caused by local heat accumulation on the crank surface.

[0055] The technical solutions of the embodiments of this application will be described in detail below with reference to the accompanying drawings and specific examples. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments.

[0056] Reference Figures 1 to 4 As shown, this application embodiment provides a crank polishing device, including a bracket 100 for mounting on a crank spindle journal lathe; a polishing mechanism 200 including a drive motor 210, a transmission roller 220, a driven roller 230, and a polishing belt 240. The drive motor 210 and the driven roller 230 are both mounted on the bracket 100. The transmission roller 220 is sleeved on the output end of the drive motor 210. The polishing belt 240 is wound around the transmission roller 220 and the driven roller 230, and the rough surface of the polishing belt 240 is in contact with the surface of the crank to polish the crank.

[0057] The polishing belt 240 is wound around the drive roller 220 and the driven roller 230. The friction generated by the contact between the drive roller 220 and the surface of the polishing belt 240 converts the rotation of the drive roller 220 into the power for the polishing belt 240 to circulate between the drive roller 220 and the driven roller 230. When polishing the crank surface is required, simply place the rough surface of the polishing belt 240 against the surface of the crank and start the drive motor 210. Under the action of the drive motor 210, the polishing belt 240 circulates between the drive roller 220 and the driven roller 230, fully rubbing the surface of the crank to remove surface burrs and other minor defects, thus completing the polishing operation.

[0058] Compared with existing crank polishing methods, the crank polishing device provided in this application has a larger and more uniform contact area with the crank surface during the polishing process, which solves the problem of crank shaking during rotation caused by local heat accumulation on the crank surface.

[0059] Reference Figure 3 As shown, in some embodiments, a rotating assembly 300 is also included; the rotating assembly 300 includes a rotating member 310 and a rotating shaft 320, the rotating member 310 is rotatably connected to the crank spindle journal lathe via the rotating shaft 320, and the bracket 100 is connected to the rotating member 310 to follow the rotating member 310 in rotating relative to the crank spindle journal lathe.

[0060] In actual production, to adapt to different engine models, structural parameters such as the crankshaft journal diameter and the eccentric distance between the connecting rod journal and the crankshaft journal vary greatly. Therefore, in the above embodiment, a rotating assembly 300 is provided, and the bracket 100 is rotatably connected to the crankshaft journal lathe via the rotating assembly 300, in order to adapt to polishing operations of cranks with different structures and expand the applicability of the crank polishing device.

[0061] Reference Figure 3 As shown, in some embodiments, the rotating member 310 is used to be inserted between two lugs 330 on a crank spindle lathe, and the rotating shaft 320 is used to be inserted on the rotating member 310 between the lugs 330 and the two lugs 330.

[0062] A lug 330 is provided on the crank spindle journal lathe. The bracket 100 is rotatably connected to the crank spindle journal lathe via the rotating assembly 300 and the lug 330. This widens the gap between the bracket 100 and the crank spindle journal lathe, providing the bracket 100 with greater rotation space. At the same time, it can also avoid the problem of the bracket 100 interfering with the crank spindle journal lathe when rotating, which would prevent the crank polishing device from working properly.

[0063] Reference Figure 3 As shown, in some embodiments, the bracket 100 has a handle 110 extending from the side near the rotating assembly 300.

[0064] The handle 110 serves two purposes: firstly, it allows operators to maintain a safe distance from the polishing mechanism 200 when using the crank polishing device, improving safety; secondly, by utilizing the lever principle, it enables operators to adjust the position of the bracket 100 with minimal force or ensure that the polishing band 240 is in close contact with the crank surface during polishing operations. Of course, the handle 110 can also be extended and positioned on the side of the bracket 100 away from the rotating components, depending on the operator's usage habits; this will not be elaborated upon here.

[0065] Furthermore, in some embodiments, the surface of the handle 110 is covered with rubber.

[0066] Rubber increases the coefficient of friction on the surface of the handle 110, making it less likely for workers to slip out of their hands when performing polishing operations, thus improving safety.

[0067] Reference Figure 3 As shown, in some embodiments, a counterweight 400 is disposed on the support 100.

[0068] The counterweight 400 increases the pressure at the contact surface between the polishing belt 240 and the crank, making the contact between the polishing belt 240 and the crank surface more compact. This, in turn, increases the friction between the polishing belt 240 and the crank surface, ensuring the polishing effect of the crank polishing device on the crank. Of course, the position and weight of the counterweight 400 can be adjusted in real time according to the required polishing precision of the crank, which will not be elaborated here.

[0069] Reference Figure 3 As shown, in some embodiments, the polishing mechanism 200 further includes an adjusting roller 253, which is movably mounted on the bracket 100, and the circumferential side of the adjusting roller 253 contacts the surface of the polishing belt 240 to adjust the tension of the polishing belt 240.

[0070] By changing the position of the adjusting roller 253, the tension of the polishing belt 240 can be adjusted so that the polishing belt 240 can always maintain a suitable tension. This not only ensures the polishing accuracy and efficiency of the polishing belt 240 on the crank, but also avoids the polishing belt 240 from being too loose or too tight, which would shorten its lifespan.

[0071] Reference Figure 3 As shown, in some embodiments, an adjustment assembly 250 is further included; the adjustment assembly 250 includes an adjustment arm 251 and a drive rod 252. The adjustment arm 251 is rotatably mounted on the bracket 100, and the adjustment roller 253 is mounted on the adjustment arm 251. The drive end of the drive rod 252 is connected to the adjustment arm 251 to drive the adjustment arm 251 to rotate relative to the bracket 100, thereby changing the position of the adjustment roller 253.

[0072] In practical implementation, the drive rod 252 can drive the adjusting arm 251 according to the tension of the polishing belt 240; if the polishing belt 240 is too loose, the adjusting arm 251 is driven to rotate clockwise to extend the winding distance of the polishing belt 240; if the polishing belt 240 is too tight, the adjusting arm 251 is driven to rotate counterclockwise to shorten the winding distance of the polishing belt 240, which is convenient to operate.

[0073] Furthermore, in some embodiments, the drive rod 252 is a hydraulic telescopic rod.

[0074] Setting the drive rod 252 as a hydraulic telescopic rod makes the rotation position of the adjusting arm 251 easier to control, eliminating the need for repeated adjustments. Of course, operators can flexibly adjust the specific structure of the drive rod 252 according to actual operational needs, as long as it can drive the adjusting arm 251 to rotate relative to the bracket 100 and provide support for the adjusting arm 251. Further details are omitted here.

[0075] In some embodiments, the polishing belt 240 is an 80-120 mesh abrasive belt.

[0076] Setting the polishing belt 240 to an 80-120 mesh abrasive belt ensures both the polishing precision and efficiency of the crankshaft while reducing wear and tear on the crankshaft during the polishing process. Of course, the mesh size of the abrasive belt can be adjusted flexibly according to the crankshaft material, which will not be elaborated upon here.

[0077] It should be understood that the various forms of processes shown above can be used to reorder, add, or delete steps. For example, the steps described in the embodiments of this application can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution disclosed in the embodiments of this application can be achieved, and this document does not impose any restrictions.

[0078] The specific embodiments described above do not constitute a limitation on the scope of protection of the embodiments of this application. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the principles of the embodiments of this application should be included within the scope of protection of the embodiments of this application.

Claims

1. A crank polishing device for a crank spindle journal lathe, characterized in that, include: A bracket (100) is used for mounting on the crank spindle journal lathe; The polishing mechanism (200) includes a drive motor (210), a transmission roller (220), a driven roller (230), and a polishing belt (240). The drive motor (210) and the driven roller (230) are both mounted on the bracket (100). The transmission roller (220) is sleeved on the output end of the drive motor (210). The polishing belt (240) is wound around the transmission roller (220) and the driven roller (230), and the rough surface of the polishing belt (240) is in contact with the surface of the crank to polish the crank.

2. The crank polishing apparatus according to claim 1, characterized in that, It also includes a rotating assembly (300); The rotating assembly (300) includes a rotating element (310) and a rotating shaft (320). The rotating element (310) is rotatably connected to the crank spindle lathe via the rotating shaft (320). The bracket (100) is connected to the rotating element (310) to follow the rotation of the rotating element (310) relative to the crank spindle lathe.

3. The crank polishing apparatus according to claim 2, characterized in that, The rotating component (310) is used to be inserted between two lugs (330) on the crank spindle lathe, and the rotating shaft (320) is used to be inserted on the rotating component (310) between the lugs (330) and the two lugs (330).

4. The crank polishing apparatus according to claim 2, characterized in that, The bracket (100) has a handle (110) extending from the side near the rotating assembly (300).

5. The crank polishing apparatus according to claim 4, characterized in that, The surface of the handle (110) is covered with rubber.

6. The crank polishing apparatus according to any one of claims 1 to 5, characterized in that, The support (100) is equipped with a counterweight (400).

7. The crank polishing apparatus according to any one of claims 1 to 5, characterized in that, The polishing mechanism (200) further includes an adjusting roller (253), which is movably mounted on the bracket (100), and the circumferential side of the adjusting roller (253) contacts the surface of the polishing belt (240) to adjust the tension of the polishing belt (240).

8. The crank polishing apparatus according to claim 7, characterized in that, It also includes an adjustment component (250); The adjustment assembly (250) includes an adjustment arm (251) and a drive rod (252). The adjustment arm (251) is rotatably mounted on the bracket (100). The adjustment roller (253) is mounted on the adjustment arm (251). The drive end of the drive rod (252) is connected to the adjustment arm (251) to drive the adjustment arm (251) to rotate relative to the bracket (100), thereby changing the position of the adjustment roller (253).

9. The crank polishing apparatus according to claim 8, characterized in that, The drive rod (252) is a hydraulic telescopic rod.

10. The crank polishing apparatus according to any one of claims 1 to 5, characterized in that, The polishing belt (240) is an 80-120 mesh abrasive belt.

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