Spraying tool for engine crankshaft

Abstract

The utility model provides an engine crankshaft spraying tool which comprises a rotating spraying structure, the rotating spraying structure comprises a mounting frame, the mounting frame is provided with a mounting ring, the mounting frame is connected with the mounting ring through an electric telescopic rod, a guide ring is arranged on the inner side of the bottom of the mounting ring, the inner side of the mounting ring is rotationally connected with a rotating gear ring, and the rotating gear ring is connected with the guide ring. Inner frames are arranged on the two sides of the inner wall of the rotating gear ring, and auxiliary grooves are formed in the inner frames. The spraying device is reasonable in design, a main journal and a crank arm can be sprayed at the same time through the arranged rotating shaft capable of rotating, and when the bevel gear is meshed with the guide ring, the rotating shaft can rotate around the rotating shaft in the horizontal rotating process, so that the spraying effect is improved. The rotating shaft drives the spray head on the outer wall of the mounting block to enter the space between the two main journal crank arms, and the spray head at the front end is in contact with the main journal, so that the spray head can spray the outer walls of the two crank arms and the outer wall of the main journal.

Description

Technical Field

[0001] The utility model mainly relates to the field of engine crankshafts, and in particular to an engine crankshaft spraying tool. Background Art

[0002] The crankshaft is the most important part of the engine. It bears the force from the connecting rod and converts it into torque, which is output through the crankshaft and drives other accessories on the engine. The crankshaft is subjected to the combined effects of the centrifugal force of the rotating mass, the periodically changing gas inertia force and the reciprocating inertia force, which makes the crankshaft subject to bending and torsion loads. Therefore, the crankshaft is required to have sufficient strength and rigidity, and the journal surface must be wear-resistant, work evenly and have good balance.

[0003] During the processing, the crankshaft needs to be fixed by tooling, and then sandblasted and tungsten carbide coated to increase the strength and corrosion resistance of the crankshaft.

[0004] The inventor discovered the following defects during the operation of the specific embodiment:

[0005] However, after the tooling fixes the crankshaft, the angle of the crankshaft cannot be adjusted, so that when the surface of the crankshaft is subsequently sandblasted, only the surface of the main journal inside the crankshaft can be sprayed, and the crank arm connected to the main journal cannot be sprayed, so that the subsequent tungsten carbide coating cannot be firmly attached to the surface of the crank arm of the crankshaft.

[0006] It should be noted that the above contents belong to the technical cognition scope of the inventor. Since the technical contents in this field are vast and too complicated, the above contents of this application do not necessarily constitute prior art. Utility Model Content

[0007] 1. Technical problems to be solved by the utility model:

[0008] The utility model provides an engine crankshaft spraying tooling to solve the technical problems existing in the above-mentioned background technology.

[0009] 2. Technical solution:

[0010] To achieve the above-mentioned purpose, the technical solution provided by the utility model is as follows: an engine crankshaft spraying tool, comprising a bracket, support rings are arranged on both sides of the bottom of the bracket, a first transmission screw is rotatably connected to one side of the top of the bracket, a second transmission screw is rotatably connected to the other side of the top of the bracket, a sliding rod is arranged on one side of the second transmission screw, the sliding rod is connected to the bracket, and a rotating spraying structure is arranged between the second transmission screw and the sliding rod;

[0011] The rotary spraying structure includes a mounting frame, the mounting frame is provided with a mounting ring, the mounting frame and the mounting ring are connected by an electric telescopic rod, a guide ring is provided on the inner side of the bottom of the mounting ring, the inner side of the mounting ring is rotatably connected with a rotating gear ring, inner frames are provided on both sides of the inner wall of the rotating gear ring, an auxiliary groove is opened inside the inner frame, a rotating shaft is rotatably provided on the inner wall of the auxiliary groove, a bevel gear is provided at one end of the rotating shaft, the bevel gear is meshed with the guide ring, a mounting block is provided at the other end of the rotating shaft, and spray heads are provided on both sides and the front end of the mounting block.

[0012] Furthermore, a connecting gear is provided at the bottom of the first transmission screw rod, a lifting frame is provided on the outer wall of the first transmission screw rod, and a mounting hole is provided inside one end of the lifting frame.

[0013] Furthermore, a rotating disk is rotatably connected to the inner wall of the mounting hole, a connecting hole is provided at the bottom of the rotating disk, a guide rod is provided at the top of the rotating disk, and limit strips are provided on the outer walls on both sides of the guide rod.

[0014] Furthermore, the top of the bracket is rotatably connected to a first gear, a limiting groove is provided in the middle of the first gear, the limiting groove is slidably connected to the guide rod, a second gear is provided on the top of the second transmission screw, and the second gear is connected to the first gear through a clutch.

[0015] Furthermore, positioning grooves are provided on both sides of the mounting ring, and gears are rotatably connected inside the positioning grooves, and the gears are meshed with the rotating gear ring.

[0016] Furthermore, a matching hole is provided on one side of the mounting frame, and the matching hole is meshed with the second transmission screw rod. A sliding hole is provided on one side of the mounting frame, and the sliding hole is slidably connected to the sliding rod.

[0017] 3. Beneficial effects:

[0018] Compared with the prior art, the technical solution provided by the utility model has the following beneficial effects:

[0019] The utility model can simultaneously spray the main journal and the crank arm by means of a rotatable rotating shaft. When the bevel gear and the guide ring are meshed with each other, the rotating shaft will rotate around itself during the horizontal rotation. The rotating shaft drives the spray head on the outer wall of the mounting block to enter between the two main journal crank arms. The spray head at the front end contacts the main journal, so that the spray head can spray the outer walls of the two crank arms and the outer wall of the main journal. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0021] Figure 2 It is a three-dimensional cross-sectional structural schematic diagram of the utility model;

[0022] Figure 3 It is a schematic diagram of the three-dimensional unfolding structure of the rotary spraying structure of the utility model;

[0023] Figure 4 For the utility model Figure 2 Schematic diagram of the local enlarged structure at point A in the middle.

[0024] Reference numerals:

[0025] 1. Bracket; 2. Support ring; 3. First transmission screw; 4. Connecting gear; 5. Lifting frame; 6. Mounting hole; 7. Rotating plate; 8. Connecting hole; 9. Guide rod; 10. Limiting strip; 11. First gear; 12. Limiting groove; 13. Slide rod; 14. Second transmission screw; 15. Rotating spraying structure; 1501. Mounting frame; 1502. Matching hole; 1503. Slide hole; 1504. Mounting ring; 1505. Positioning groove; 1506. Guide ring; 1507. Rotating gear ring; 1508. Inner frame; 1509. Auxiliary groove; 1510. Rotating shaft; 1511. Bevel gear; 1512. Mounting block; 1513. Spray head; 16. Second gear. DETAILED DESCRIPTION

[0026] To facilitate the understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0027] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "page", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0028] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0029] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed", "provided with", "provided on" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. Example

[0030] See attached Figure 1-4 , an engine crankshaft spraying tool, comprising a bracket 1, support rings 2 are arranged on both sides of the bottom of the bracket 1, a first transmission screw 3 is rotatably connected to one side of the top of the bracket 1, a second transmission screw 14 is rotatably connected to the other side of the top of the bracket 1, a slide bar 13 is arranged on one side of the second transmission screw 14, the slide bar 13 is connected to the bracket 1, and a rotating spraying structure 15 is arranged between the second transmission screw 14 and the slide bar 13;

[0031] The rotary spraying structure 15 comprises a mounting frame 1501, wherein the mounting frame 1501 is provided with a mounting ring 1504, wherein the mounting frame 1501 and the mounting ring 1504 are connected via an electric telescopic rod, wherein a guide ring 1506 is provided on the inner side of the bottom of the mounting ring 1504, wherein a rotating gear ring 1507 is rotatably connected to the inner side of the mounting ring 1504, wherein inner frames 1508 are provided on both sides of the inner wall of the rotating gear ring 1507, wherein an auxiliary groove 1509 is provided inside the inner frame 1508, wherein a rotating shaft 1510 is rotatably provided on the inner wall of the auxiliary groove 1509, wherein a bevel gear 1511 is provided at one end of the rotating shaft 1510, wherein the bevel gear 1511 is meshedly connected to the guide ring 1506, wherein a mounting block 1512 is provided at the other end of the rotating shaft 1510, wherein nozzles 1513 are provided on both sides and the front end of the mounting block 1512.

[0032] Further, a connecting gear 4 is provided at the bottom of the first transmission screw 3, a lifting frame 5 is provided on the outer wall of the first transmission screw 3, a mounting hole 6 is provided inside one end of the lifting frame 5, a rotating disk 7 is rotatably connected to the inner wall of the mounting hole 6, a connecting hole 8 is provided at the bottom of the rotating disk 7, a guide rod 9 is provided at the top of the rotating disk 7, and limiting strips 10 are provided on the outer walls of both sides of the guide rod 9, a first gear 11 is rotatably connected to the top of the bracket 1, a limiting groove 12 is provided in the middle of the first gear 11, and the limiting groove 12 is slidably connected to the guide rod 9, a second gear 16 is provided on the top of the second transmission screw 14, The second gear 16 is connected to the first gear 11 through a clutch to connect the bottom of the crankshaft to the top of the bracket 1, and then the motor drives the first transmission screw 3 to rotate through the connecting gear 4, and the first transmission screw 3 drives the lifting frame 5 to move downward, so that the lifting frame 5 drives the rotating disk 7 to move downward, and then the rotating disk 7 drives the connecting hole 8 to fit with the top of the crankshaft to clamp the crankshaft. At the same time, the second gear 16 is meshed with the first gear 11 through the clutch to rotate the first gear 11. The first gear 11 drives the rotating disk 7 to rotate through the guide rod 9, which is used to rotate the rotating disk 7 so that the sand is evenly in contact with the crankshaft, which is convenient for the subsequent tungsten carbide coating to be firmly connected to the crankshaft.

[0033] Furthermore, positioning grooves 1505 are provided on both sides of the mounting ring 1504, and gears are rotatably connected inside the positioning grooves 1505. The gears are meshed with the rotating gear ring 1507. When the motor is started, the motor drives the gears to rotate, and the gears drive the rotating gear ring 1507 to rotate on the inner wall of the mounting ring 1504, so that the rotating gear ring 1507 drives the nozzle 1513 on the outer wall of the mounting block 1512 to enter between the main shaft neck and the crank arm for spraying.

[0034] Furthermore, a matching hole 1502 is provided on one side of the mounting frame 1501 , and the matching hole 1502 is meshed with the second transmission screw 14 . A sliding hole 1503 is provided on one side of the mounting frame 1501 , and the sliding hole 1503 is slidably connected with the sliding rod 13 .

[0035] In this embodiment, when the crankshaft needs to be tooled by spraying tooling, the bottom of the crankshaft is brought into contact with the middle of the bottom of the inner wall of the bracket 1, and then the motor is started. The motor drives the first transmission screw 3 to rotate through the gear and the connecting gear 4, and the first transmission screw 3 drives the lifting frame 5 to move downward, so that the lifting frame 5 drives the rotating disk 7 to move downward, and the rotating disk 7 drives the connecting hole 8 to fit with the top of the crankshaft to fix the crankshaft;

[0036] At the same time, the outer wall of the crankshaft enters the interior of the rotating gear ring 1507, and the electric telescopic rod is started, so that the electric telescopic rod pushes the center line of the rotating gear ring 1507 in the mounting ring 1504 to align with the center line of the main shaft neck of the crankshaft, and then the motor is started. The motor drives the rotating gear ring 1507 to rotate on the inner wall of the mounting ring 1504 through the gear, so that the rotating gear ring 1507 rotates around the main shaft neck, and the rotating gear ring 1507 drives the mounting block 1512 to enter between the two crank arms. At the same time, the bevel gear 1511 is engaged with the guide ring 1506, so that the bevel gear 1511 drives the rotating shaft 1510 to rotate, and the rotating shaft 1510 drives the mounting block 1512 to rotate, and the mounting block 1512 drives the nozzle 1513 to rotate. The rotating shaft 1510 is connected to the external pipe through a rotating sealing ring, so that the nozzle 1513 sandblasts the surface of the crankshaft, and then tungsten carbide is sprayed onto the surface of the crankshaft through supersonic flame spraying technology.

[0037] The above-described embodiments only express a certain implementation method of the utility model, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that, for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the patent of the utility model shall be based on the attached claims.

Claims

1. An engine crankshaft spraying tool, characterized in that: A bracket (1), wherein support rings (2) are arranged on both sides of the bottom of the bracket (1), one side of the top of the bracket (1) is rotatably connected to a first transmission screw (3), the other side of the top of the bracket (1) is rotatably connected to a second transmission screw (14), a sliding rod (13) is arranged on one side of the second transmission screw (14), the sliding rod (13) is connected to the bracket (1), and a rotating spraying structure (15) is arranged between the second transmission screw (14) and the sliding rod (13); The rotary spraying structure (15) comprises a mounting frame (1501), the mounting frame (1501) is provided with a mounting ring (1504), the mounting frame (1501) and the mounting ring (1504) are connected via an electric telescopic rod, a guide ring (1506) is provided on the inner side of the bottom of the mounting ring (1504), a rotating gear ring (1507) is rotatably connected to the inner side of the mounting ring (1504), and inner frames (1506) are provided on both sides of the inner wall of the rotating gear ring (1507). 8), an auxiliary groove (1509) is provided inside the inner frame (1508), a rotating shaft (1510) is rotatably provided on the inner wall of the auxiliary groove (1509), a bevel gear (1511) is provided at one end of the rotating shaft (1510), the bevel gear (1511) is meshingly connected with the guide ring (1506), a mounting block (1512) is provided at the other end of the rotating shaft (1510), and nozzles (1513) are provided on both sides and the front end of the mounting block (1512).

2. The engine crankshaft spraying tool according to claim 1, characterized in that: A connecting gear (4) is provided at the bottom of the first transmission screw (3), a lifting frame (5) is provided on the outer wall of the first transmission screw (3), and a mounting hole (6) is provided inside one end of the lifting frame (5).

3. The engine crankshaft spraying tool according to claim 2, characterized in that: A rotating disk (7) is rotatably connected to the inner wall of the mounting hole (6), a connecting hole (8) is provided at the bottom of the rotating disk (7), a guide rod (9) is provided at the top of the rotating disk (7), and limit strips (10) are provided on the outer walls of both sides of the guide rod (9).

4. The engine crankshaft spraying tool according to claim 1, characterized in that: The top of the bracket (1) is rotatably connected to a first gear (11), a limiting groove (12) is provided in the middle of the first gear (11), the limiting groove (12) is slidably connected to the guide rod (9), and a second gear (16) is provided on the top of the second transmission screw rod (14), and the second gear (16) is connected to the first gear (11) via a clutch.

5. The engine crankshaft spraying tool according to claim 1, characterized in that: Positioning grooves (1505) are provided on both sides of the mounting ring (1504), and gears are rotatably connected inside the positioning grooves (1505), and the gears are meshed with the rotating gear ring (1507).

6. The engine crankshaft spraying tool according to claim 1, characterized in that: A matching hole (1502) is provided on one side of the mounting frame (1501), and the matching hole (1502) and the second transmission screw rod (14) are meshed with each other. A sliding hole (1503) is provided on one side of the mounting frame (1501), and the sliding hole (1503) and the sliding rod (13) are slidably connected.

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