Crank polishing device

Abstract

The invention 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] The present application relates to the technical field of crank processing, and in particular to a crank polishing device. Background Art

[0002] The crank, 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 in the form of crank rotation to drive other accessories on the engine to work. Since the crank is in a high temperature and high pressure environment for a long time, in order to improve the wear resistance and fatigue resistance of the crank, the surface of the crank needs to be polished.

[0003] In the 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 fully collides with the polishing abrasive during rotation to remove tiny defects such as surface burrs.

[0004] However, polishing abrasives are generally small particles, and during the crank polishing operation, they are prone to uneven contact with the crank surface, causing local heat accumulation on the crankshaft surface, causing it to vibrate during rotation, affecting the normal operation of the engine. Summary of the invention

[0005] In view of this, the present application provides a crank polishing device, which can solve the problem of the crank shaking when rotating due to local heat accumulation on the surface of the crankshaft during the polishing process.

[0006] In order to achieve the above-mentioned purpose, the present application provides a crank polishing device, which adopts the following technical solutions:

[0007] The present application embodiment provides a crank polishing device, comprising:

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

[0009] The polishing mechanism comprises a driving motor, a transmission roller, a driven roller and a polishing belt, wherein the driving motor and the driven roller are both mounted on the bracket, the transmission roller is sleeved on the output end of the driving 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] In a possible implementation, it further includes a rotating component;

[0011] The rotating assembly includes a rotating member and a rotating shaft. The rotating member is rotatably connected to the crank main journal lathe via the rotating shaft. The bracket is connected to the rotating member to rotate with the rotating member relative to the crank main journal lathe.

[0012] In a possible implementation, the rotating member is used to be inserted between two ear seats on the crank main journal lathe, and the rotating shaft is used to be inserted on the ear seat and the rotating member between the two ear seats.

[0013] In a possible implementation, a handle is extended from a side of the bracket close to the rotating assembly.

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

[0015] In a possible implementation, a counterweight is disposed on the bracket.

[0016] In a possible implementation, the polishing mechanism further includes an adjusting roller, which is movably disposed on the bracket, and a circumferential side surface of the adjusting roller contacts the surface of the polishing belt to adjust the tension of the polishing belt.

[0017] In a possible implementation, it further includes a regulating component;

[0018] The adjustment assembly includes an adjustment arm and a driving rod. The adjustment arm is rotatably arranged on the bracket, and the adjustment roller is installed on the adjustment arm. The driving end of the driving 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 a possible implementation manner, the driving rod is a hydraulic telescopic rod.

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

[0021] A crank polishing device provided in an embodiment of the present application includes a bracket and a polishing mechanism, wherein the polishing mechanism includes a driving motor, a transmission roller, a driven roller and a polishing belt.

[0022] The polishing belt is wound around the driving roller and the driven roller. The friction generated by the contact between the driving roller and the polishing belt surface converts the rotation of the driving roller into power for the polishing belt to circulate between the driving roller and the driven roller. When the crank surface needs to be polished, just fit the rough surface of the polishing belt to the surface of the crank and start the drive motor. Under the action of the drive motor, the polishing belt circulates between the driving roller and the driven roller, fully rubbing the surface of the crank, removing tiny defects such as burrs on the crank surface, and completing the polishing operation.

[0023] Compared with the crank polishing method in the prior art, the crank polishing device provided in the present application has a larger and more uniform contact area with the crank surface during the polishing process, thereby solving the problem of crank shaking during rotation due to local heat accumulation on the crank surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The specific implementation of the embodiments of the present application is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the embodiments of the present application, and the embodiments of the present application are not limited to the specific implementation described below.

[0025] Figure 1 A schematic diagram of the assembly of a crank polishing device provided in an embodiment of the present application;

[0026] Figure 2 A top view of the assembly of a crank polishing device provided in an embodiment of the present application;

[0027] Figure 3 A schematic diagram of the structure of a crank polishing device provided in an embodiment of the present application;

[0028] Figure 4 A structural side view of a crank polishing device provided in an embodiment of the present application.

[0029] Description of reference numerals:

[0030] 100-Stand;

[0031] 110-handle;

[0032] 200-polishing mechanism;

[0033] 210-driving motor;

[0034] 220-transmission roller;

[0035] 230-driven roller;

[0036] 240-polishing belt;

[0037] 250-adjustment components;

[0038] 251-adjusting arm; 252-driving rod; 253-adjusting roller;

[0039] 300-rotating assembly;

[0040] 310-rotating member; 320-rotating shaft; 330-ear seat;

[0041] 400-Counterweight.

[0042] The above drawings have shown the clear embodiments of the present application, which will be described in more detail later. These drawings and text descriptions are not intended to limit the scope of the embodiments of the present application in any way, but to illustrate the concepts of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0043] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application and how the technical solution in the embodiments of the present application solves the above-mentioned technical problems will be clearly and completely described below with specific embodiments and in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0044] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, or it can be an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0045] In the description of the embodiments of the present application, it should be understood that the terms "upper", "lower", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the embodiments of the present application.

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

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

[0048] In addition, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or apparatus that includes a series of steps or elements is not necessarily limited to those steps or elements explicitly listed, but may include other steps or elements not explicitly listed or inherent to such process, method, product, or apparatus.

[0049] The crank, 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 in the form of crank rotation to drive other accessories on the engine to work. Since the crank is in a high temperature and high pressure environment for a long time, in order to improve the wear resistance and fatigue resistance of the crank, the surface of the crank needs to be polished.

[0050] In the 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 fully collides with the polishing abrasive during rotation to remove tiny defects such as surface burrs.

[0051] However, polishing abrasives are generally small particles, and during the crank polishing operation, they are prone to uneven contact with the crank surface, causing local heat accumulation on the crankshaft surface, causing it to vibrate during rotation, affecting the normal operation of the engine.

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

[0053] The polishing belt is wound around the driving roller and the driven roller. The friction generated by the contact between the driving roller and the polishing belt converts the rotation of the driving roller into power for the polishing belt to circulate between the driving roller and the driven roller. When the crank surface needs to be polished, just fit the rough surface of the polishing belt to the surface of the crank and start the drive motor. Under the action of the drive motor, the polishing belt circulates between the driving roller and the driven roller, fully rubbing the surface of the crank, removing tiny defects such as burrs on the crank surface, and completing the polishing operation.

[0054] Compared with the crank polishing method in the prior art, the crank polishing device provided in the present application has a larger and more uniform contact area with the crank surface during the polishing process, thereby solving the problem of crank shaking during rotation due to local heat accumulation on the crank surface.

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

[0056] Reference Figures 1 to 4 As shown, an embodiment of the present application provides a crank polishing device, including a bracket 100 for being installed on a crank main journal lathe; a polishing mechanism 200, including a driving motor 210, a transmission roller 220, a driven roller 230 and a polishing belt 240, the driving motor 210 and the driven roller 230 are both installed on the bracket 100, the transmission roller 220 is sleeved on the output end of the driving 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 driving roller 220 and the driven roller 230. The friction force generated by the contact between the driving roller 220 and the polishing belt 240 converts the rotation of the driving roller 220 into power for the polishing belt 240 to circulate between the driving roller 220 and the driven roller 230. When the surface of the crank needs to be polished, it is only necessary to contact the rough surface of the polishing belt 240 with the surface of the crank and start the driving motor 210. Under the action of the driving motor 210, the polishing belt 240 circulates between the driving roller 220 and the driven roller 230, fully rubbing the surface of the crank to remove minor defects such as surface burrs, and complete the polishing operation.

[0058] Compared with the crank polishing method in the prior art, the crank polishing device provided in the present application has a larger and more uniform contact area with the crank surface during the polishing operation, thereby solving the problem of crank shaking during rotation due to 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 main journal lathe via the rotating shaft 320, and the bracket 100 is connected to the rotating member 310 to rotate with the rotating member 310 relative to the crank main journal lathe.

[0060] In actual production, in order to adapt to different models of engines, the main journal diameter of the crank, the eccentric distance between the connecting rod neck and the main journal and other structural parameters have great differences. Therefore, in the above embodiment, a rotating assembly 300 is provided, and the bracket 100 is rotatably connected to the crank main journal lathe through the rotating assembly 300 to adapt to the polishing operation of cranks with different structures, thereby expanding the application range of the crank polishing device.

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

[0062] An ear seat 330 is set on the crank main journal machine tool, and the bracket 100 is rotatably connected to the crank main journal lathe through the rotating assembly 300 and the ear seat 330. This widens the gap between the bracket 100 and the crank main journal lathe, providing a larger rotation space for the bracket 100; at the same time, it can also avoid the problem that the bracket 100 interferes with the crank main journal lathe during rotation, resulting in the crank polishing device being unable to be used normally.

[0063] Reference Figure 3 As shown, in some embodiments, a handle 110 is extended from one side of the bracket 100 close to the rotating assembly 300 .

[0064] The setting of the handle 110, on the one hand, allows the staff to maintain a certain safe distance from the polishing mechanism 200 when using the crank polishing device, thereby improving the safety of use; on the other hand, by utilizing the principle of leverage, the staff can adjust the position of the bracket 100 or ensure that the polishing belt 240 is in close contact with the crank surface during the polishing operation with a small force. Of course, the handle 110 can also be extended to the side of the bracket 100 away from the rotating component, which can be selected according to the staff's usage habits, and will not be described in detail here.

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

[0066] The rubber can increase the friction coefficient of the surface of the handle 110, so that when the worker holds the handle 110 tightly for polishing, it is not easy to slip out of the hand, thereby improving the safety of use.

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

[0068] The counterweight 400 can increase the pressure at the contact surface between the polishing belt 240 and the crank, so that the polishing belt 240 and the crank surface are in closer contact, thereby increasing the friction between the polishing belt 240 and the crank surface, and 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 polishing accuracy required by the crank, which will not be described in detail here.

[0069] Reference Figure 3 As shown, in some embodiments, the polishing mechanism 200 further includes an adjusting roller 253 , which is movably disposed on the bracket 100 , and a circumferential side surface 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 always maintains a suitable tension state. This not only ensures the polishing accuracy and polishing efficiency of the polishing belt 240 on the crank, but also avoids shortening the life of the polishing belt 240 due to the polishing belt 240 being too loose or too tight.

[0071] Reference Figure 3 As shown, further, in some embodiments, an adjustment component 250 is also included; the adjustment component 250 includes an adjustment arm 251 and a driving rod 252, the adjustment arm 251 is rotatably set on the bracket 100, the adjustment roller 253 is installed on the adjustment arm 251, and the driving end of the driving 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 a specific implementation, the driving 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 driving rod 252 is a hydraulic telescopic rod.

[0074] The driving rod 252 is set as a hydraulic telescopic rod, so that the rotation position of the adjustment arm 251 is easier to control and no repeated adjustment is required. Of course, the staff can flexibly adjust the specific structure of the driving rod 252 according to actual operation requirements, as long as it can drive the adjustment arm 251 to rotate relative to the bracket 100 and support the adjustment arm 251, and no further details will be given here.

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

[0076] The polishing belt 240 is set to be an 80-120 mesh sanding belt, which reduces the wear of the crank during the polishing process while ensuring the polishing accuracy and polishing efficiency of the crank by the polishing belt 240. Of course, the staff can flexibly adjust the mesh of the sanding belt according to the material of the crank, which will not be described in detail 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 recorded in the embodiments disclosed in the present application can be executed in parallel, sequentially or in different orders, as long as the desired results of the technical solutions disclosed in the embodiments of the present application can be achieved, and this document is not limited here.

[0078] The above specific implementations do not constitute a limitation on the protection scope of the embodiments of the present application. It should be understood by those skilled in the art 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 the present application should be included in the protection scope of the embodiments of the present application.

Claims

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

2. The crank polishing device according to claim 1, characterized in that: Also included is a rotating assembly (300); The rotating assembly (300) comprises a rotating member (310) and a rotating shaft (320); the rotating member (310) is rotationally connected to the crank main journal lathe via the rotating shaft (320); and the bracket (100) is connected to the rotating member (310) so as to rotate with the rotating member (310) relative to the crank main journal lathe.

3. The crank polishing device according to claim 2, characterized in that: The rotating member (310) is used to be inserted between two ear seats (330) on the crank main journal lathe, and the rotating shaft (320) is used to be inserted on the ear seat (330) and the rotating member (310) between the two ear seats (330).

4. The crank polishing device according to claim 2, characterized in that: A handle (110) is extended from one side of the bracket (100) close to the rotating assembly (300).

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

6. The crank polishing device according to any one of claims 1 to 5, characterized in that: A counterweight block (400) is disposed on the bracket (100).

7. The crank polishing device according to any one of claims 1 to 5, characterized in that: The polishing mechanism (200) further comprises an adjusting roller (253), which is movably arranged on the bracket (100), and the circumferential side surface 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 device according to claim 7, characterized in that: Also included is an adjustment assembly (250); The adjustment assembly (250) comprises an adjustment arm (251) and a driving rod (252); the adjustment arm (251) is rotatably disposed on the bracket (100); the adjustment roller (253) is mounted on the adjustment arm (251); and the driving end of the driving 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 device according to claim 8, characterized in that: The driving rod (252) is a hydraulic telescopic rod.

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

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