Diesel engine crankshaft polishing device

Abstract

The utility model relates to the field of polishing devices, and discloses a diesel engine crankshaft polishing device which comprises a polishing machine, supporting frames are fixedly mounted on the two side edges of the upper surface of the polishing machine correspondingly, a movable part is movably mounted between the two supporting frames, and bearing supports are fixedly connected to the bottoms of the front end and the rear end of the movable part correspondingly; supporting pieces are hinged to the two side edges of the bearing support through supporting shafts, first supporting rollers are symmetrically and rotationally installed in the middles of the two supporting pieces, guiding sliding grooves are formed in the upper end edges and the lower end edges of the supporting pieces in a penetrating mode, one sides of the supporting pieces extend into the guiding sliding grooves to be in threaded connection with limiting screws, and connecting pieces are rotationally installed on the side edges of one sides of the limiting screws; the angle of the polishing belt in the supporting piece is adjusted by rotating the limiting screw rod, so that the effect of adapting to the special-shaped structure of the crankshaft is achieved, the polishing effect of the diesel engine crankshaft is ensured, polishing of different parts of the crankshaft is adapted, and the overall use efficiency of the polishing belt is reflected.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of polishing device, especially to a diesel engine crankshaft polishing device. BACKGROUND

[0002] In the field of diesel engine manufacturing, the surface polishing quality of the crankshaft as a core component directly affects the performance and service life of the diesel engine. The polishing device is the key equipment to improve the surface finish of the crankshaft, but the existing polishing device for the diesel engine crankshaft has a fixed installation structure of the polishing belt, lacking flexible adjusting mechanism. The diesel engine crankshaft has a complex profile structure, and the curvature and size of each part are obviously different. The fixed polishing belt cannot be adjusted according to the profile structure of the crankshaft, so it is difficult to maintain the best contact state with the surface of the crankshaft during polishing, resulting in uneven polishing of the surface of the crankshaft, and the profiled parts of the crankshaft are difficult to achieve ideal polishing effect, reducing product quality. The operator needs to frequently stop and adjust the polishing belt, and even replace the equipment, which seriously reduces the polishing efficiency and increases the production cost.

[0003] In view of the defects in the related art, the present application provides a diesel engine crankshaft polishing device to solve the above problems. CONTENT OF THE UTILITY MODEL

[0004] In order to solve the problem of inconvenient adjustment of the polishing belt when polishing the diesel engine crankshaft, the present application provides a diesel engine crankshaft polishing device.

[0005] The diesel engine crankshaft polishing device provided by the present application adopts the following technical scheme:

[0006] A diesel engine crankshaft polishing device, comprising a polishing machine, support frames are fixedly installed on both sides of the upper surface of the polishing machine, a movable part is movably installed between the two support frames, bearing supports are fixedly connected to the bottom of the front and rear ends of the movable part, support parts are hingedly connected to the both sides of the bearing supports through support shafts, a first supporting roller is symmetrically and rotatably installed at the middle position of the two support parts, guide sliding grooves are formed through the upper and lower end edges of the support parts, limit screws are threadedly connected to the inside of the guide sliding grooves on one side of the support parts, connecting parts are rotatably installed on one side edge of the limit screws, a second supporting roller is rotatably installed between the two support parts through the connecting parts near the upper and lower ends, a polishing belt is sleeved on the outer surfaces of the first and second supporting rollers, and a rotating mechanism is further arranged on the upper surface of the movable part for adjusting the movement of the support parts.

[0007] Preferably, the rotating mechanism comprises a gear fixed in the middle of the outer surface of the support shaft between the two support frames, the upper surface of the movable piece is fixedly provided with an electric telescopic rod, and the lower surface of the electric telescopic rod is provided with a double-sided rack plate.

[0008] Preferably, a lead screw is rotatably arranged through the movable piece at the top between the two support frames, a servo motor is arranged on one side of the lead screw and extends to the outside of the support frame, and a guide rod is fixed below the lead screw between the two support frames.

[0009] Preferably, a threaded hole is formed in the middle of one side of the movable piece, the outer diameter of the lead screw is smaller than the inner diameter of the threaded hole, the lead screw and the threaded hole are matched with each other, a through hole is formed in the bottom of one side of the movable piece, the outer surface of the guide rod is located in the through hole, and the guide rod and the through hole are matched with each other.

[0010] Preferably, the double-sided rack plate has a U-shaped structure in cross section, the double-sided rack plate extends to the inside of the bearing support at the bottom, the double-sided rack plate is located close to the outer surface of the gear at one end, and the gear and the double-sided rack plate are meshed with each other.

[0011] To sum up, the application has the following beneficial technical effects:

[0012] The double-sided rack plate is driven by the electric telescopic rod, is meshed with the gear, drives the support piece to rotate around the support shaft, adjusts the angle of the polishing belt, adapts to the special-shaped structure of the crankshaft, adjusts the position of the second supporting roller through the limiting screw and the connecting piece, tensions the polishing belt, ensures the polishing effect, drives the movable piece to move along the guide rod through the servo motor, adjusts the transverse position of the polishing belt, and adapts to the polishing of different parts of the crankshaft. BRIEF DESCRIPTION OF DRAWINGS

[0013] Fig. 1 is a schematic view of the overall structure of the embodiment of the application;

[0014] Fig. 2 is a schematic view of the structure of the movable piece in the embodiment of the application;

[0015] Fig. 3 is a schematic view of the structure of the polishing belt in the embodiment of the application;

[0016] The following describes the application in detail with reference to the drawings. DETAILED DESCRIPTION

[0017] The following describes the application in detail with reference to the drawings. Figs. 1-3The application is further described in detail.

[0018] The embodiment of the application discloses a diesel engine crankshaft polishing device. Figs. 1-3 The diesel engine crankshaft polishing device comprises a polisher 1, support frames 2 are fixedly installed on both side edges of the upper surface of the polisher 1, a movable piece 6 is movably installed between the two support frames 2, bearing supports 7 are fixedly connected to the bottom of the front and rear ends of the movable piece 6, support pieces 8 are hingedly connected to the two side edges of the bearing supports 7 through support shafts, a first supporting roller 9 is symmetrically and rotatably installed at the middle position of the two support pieces 8, guide sliding grooves 10 are formed in the upper and lower end edges of the support pieces 8, a limiting screw rod 11 is threadedly connected to the inside of the guide sliding groove 10 on one side of the support piece 8, a connecting piece 12 is rotatably installed on one side edge of the limiting screw rod 11, a second supporting roller 13 is rotatably installed between the two support pieces 8 through the connecting piece 12 near the upper and lower ends, a polishing belt 14 is sleeved on the outer surfaces of the first supporting roller 9 and the second supporting roller 13, and a rotating mechanism is further arranged on the upper surface of the movable piece 6 and used for adjusting the movement of the support pieces 8.

[0019] The second supporting roller 13 is driven to move in the guide sliding groove 10 through the connecting piece 12 by rotating the limiting screw rod 11, so that the tension of the polishing belt 14 is adjusted. In this way, the polishing belt 14 can be flexibly adjusted in angle and tension, and the polishing requirements of different parts of the crankshaft can be met, and uniform polishing is realized.

[0020] Refer to Fig. 2 and Fig. 3 The rotating mechanism comprises a gear 15, the gear 15 is fixedly connected to the middle part of the outer surface of the support shaft between the two support pieces 8, an electric telescopic rod 16 is fixedly installed on the upper surface of the movable piece 6, a double-sided rack plate 17 is installed at the output end of the lower bottom surface of the electric telescopic rod 16, the double-sided rack plate 17 has a U-shaped structure in cross section, the double-sided rack plate 17 extends to the inside of the bearing support 7 at the bottom, one end of the double-sided rack plate 17 is close to the outer surface of the gear 15, and the gear 15 and the double-sided rack plate 17 are in meshing engagement.

[0021] The double-sided rack plate 17 is driven to move by starting the electric telescopic rod 16, the double-sided rack plate 17 is in meshing engagement with the gear 15, the support pieces 8 are driven to rotate around the support shaft, and thus the overall angle of the support pieces 8 and the polishing belt 14 is adjusted, and the special-shaped structure of the diesel engine crankshaft is adapted.

[0022] Refer to Fig. 1 and Fig. 3The top between the two support frames 2 is rotatably provided with a lead screw 3 through a movable element 6, one side of the lead screw 3 extends to the outside of the support frame 2 and is provided with a servo motor 4, a guide rod 5 is fixedly connected between the two support frames 2 below the lead screw 3, a threaded hole is formed in the middle of one side of the movable element 6, the outer diameter of the lead screw 3 is smaller than the inner diameter of the threaded hole, the lead screw 3 and the threaded hole are matched with each other, and a through hole is formed in the bottom of one side of the movable element 6, the guide rod 5 is located in the through hole on one side of the outer surface of the guide rod 5, and the guide rod 5 and the through hole are matched with each other.

[0023] The servo motor 4 is started to drive the lead screw 3 to rotate, the movable element 6 is moved transversely along the guide rod 5 to the crankshaft position to be polished due to the threaded cooperation with the lead screw 3 and the guidance of the guide rod 5, and the overall placement position of the movable element 6 is adjusted to be suitable for different positions of the crankshaft.

[0024] The working principle of the diesel engine crankshaft polishing device is as follows: when the diesel engine crankshaft polishing device works, the servo motor 4 is started to drive the lead screw 3 to rotate, the movable element 6 is moved transversely along the guide rod 5 to the crankshaft position to be polished due to the threaded cooperation with the lead screw 3 and the guidance of the guide rod 5. The electric telescopic rod 16 is started to drive the double-sided rack plate 17 to move, the double-sided rack plate 17 is engaged with the gear 15 to drive the support element 8 to rotate around the support shaft, so that the angle of the polishing belt 14 is adjusted to adapt to the special-shaped structure of the diesel engine crankshaft. At the same time, the rotary limiting screw 11 is rotated to drive the No. 2 supporting roller 13 to move in the guide sliding groove 10 through the connecting element 12 to adjust the tension of the polishing belt 14. In this way, the polishing belt 14 can be flexibly adjusted in angle and tension to adapt to the polishing requirements of different positions of the crankshaft, uniform polishing is realized, the polishing quality and efficiency are improved, and the input ends of the power supplies of the servo motor 4 and the electric telescopic rod 16 are electrically connected with the output end of the external power supply.

[0025] Finally, the following points should be noted: first, in the description of the present application, it should be pointed out that, unless otherwise specified and limited, the terms "installation", "connection", "connection" should be understood in a broad sense, which can be mechanical connection or electrical connection, or the communication between two elements, or direct connection, "up", "down", "left", "right" and the like are only used to represent the relative positional relationship, when the absolute position of the described object changes, the relative positional relationship may change;

[0026] Secondly: the drawings of the utility model discloses only relate to the structure involved in the embodiment of the present disclosure, other structures can refer to the usual design, in the case of no conflict, the same embodiment and different embodiments of the utility model can be combined with each other;

[0027] Finally: the above-mentioned is only the preferred embodiment of the utility model, and is not used for limiting the utility model, and any modification, equivalent replacement, improvement and the like made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

[0028] The above are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application, and thus: any equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A diesel engine crankshaft polishing device, comprising a polisher (1), the upper surface of the polisher (1) is fixedly installed with a support frame (2) on both sides of the edge, characterized in that: Two said support frame (2) between the movable mounting movable element (6), the movable element (6) front and back two ends of the bottom are fixedly connected with bearing support (7), the bearing support (7) both sides are hinged with support element (8) through the support shaft, two said support element (8) intermediate position is symmetrically rotatably installed with a supporting roller (9), the support element (8) upper and lower two end edge is provided with a guide sliding slot (10), the support element (8) one side extends to the guide sliding slot (10) inside screw connection with a limit screw (11), the limit screw (11) one side edge rotatably mounted with a connecting element (12), two said support element (8) between the upper and lower two ends through the connecting element (12) rotatably installed with a supporting roller (13), the supporting roller (9) and supporting roller (13) outer surface is provided with a polishing belt (14), the movable element (6) upper surface is also provided with a rotating mechanism, for adjusting the support element (8) activity.

2. A device for polishing a crankshaft of a diesel engine according to claim 1, characterized in that: The rotating mechanism comprises a gear (15), the gear (15) is fixedly connected between the support shaft (8) outer surface middle part, the movable element (6) upper surface is fixedly installed with an electric telescopic rod (16), the electric telescopic rod (16) lower bottom surface output end is provided with a double-sided rack plate (17).

3. A device for polishing a crankshaft of a diesel engine according to claim 1, characterized in that: Two said support frame (2) between the top through the movable element (6) rotatably mounted with a lead screw (3), the lead screw (3) one side extends to the support frame (2) outside installation of servo motor (4), two said support frame (2) between the lead screw (3) below is fixedly connected with a guide rod (5).

4. A device for polishing a crankshaft of a diesel engine according to claim 3, characterized in that: The movable element (6) one side middle part is provided with a threaded hole, the lead screw (3) outer diameter is less than the threaded hole inner diameter, the lead screw (3) and threaded hole are matched with each other, the movable element (6) one side bottom is provided with a through hole, the guide rod (5) outer surface one side is located in the through hole, the guide rod (5) and the through hole are embedded with each other.

5. A device for polishing a crankshaft of a diesel engine according to claim 2, characterized in that: The double-sided rack plate (17) cross section is U type structure, the double-sided rack plate (17) bottom extends to the bearing support (7) inside, the double-sided rack plate (17) one end is close to the outer surface of the gear (15), the gear (15) and double-sided rack plate (17) are engaged with each other.

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