Marine engine crankshaft counterweight structure convenient to disassemble

Abstract

The marine engine crankshaft balance weight structure convenient to disassemble comprises a crankshaft body and a balance weight mechanism, the balance weight mechanism is composed of a horizontal balance weight block and two hinged rotary balance weight blocks, an adjusting type quick disassembly assembly is arranged between the horizontal balance weight block and the two hinged rotary balance weight blocks, and the adjusting type quick disassembly assembly comprises a driving gear, a driven gear B, a driven gear C, a winding wheel and a steel wire rope. The reel can be synchronously driven to tighten or release the steel wire rope by rotating the overturning handle at the end part of the driving gear, the rotating balancing weight is dragged to quickly clamp or separate from the crankshaft body, and a silica gel non-slip mat is arranged on the inner wall of the rotating balancing weight to enhance the friction force. The problems that a traditional bolt fixing mode is low in efficiency and high in tool dependence are solved, and the maintenance efficiency of an engine in a cabin is remarkably improved.

Description

Technical Field

[0001] This utility model relates to the field of crankshaft counterweight technology, and in particular to a crankshaft counterweight structure for marine engines that is easy to disassemble. Background Technology

[0002] Marine engines are machines that convert other forms of energy into mechanical energy, which can be used to drive ships at sea. The crankshaft is one of the important parts inside the engine. It is the spine of the engine, can withstand impact loads, is a key component for transmitting power, and can drive the engine's valve train and various other components. The working environment and stress conditions of the crankshaft are relatively complex. When the crankshaft rotates at high speed, it will generate an inertial force and a centrifugal force on the shaft. According to the requirements of rotational stability, when the center of gravity of the object itself coincides with the axis of rotation, the rotating object will achieve rotational balance. Increasing the counterweight can reduce the influence of inertial force on the shaft. Therefore, the counterweight structure of the engine crankshaft is used.

[0003] Existing counterweights are mostly fixed to the crankshaft with bolts. Disassembly and maintenance require special tools and are time-consuming, which is especially inconvenient in the narrow cabin environment.

[0004] Therefore, it is essential to provide a marine engine crankshaft counterweight structure that is easy to disassemble in order to address the shortcomings of existing technologies. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of existing technologies and provide an easily disassembled marine engine crankshaft counterweight structure. This invention includes a crankshaft body and a counterweight mechanism. The counterweight mechanism consists of a horizontal counterweight block and two hinged rotating counterweight blocks. An adjustable quick-release assembly is provided between the two. The adjustable quick-release assembly includes a driving gear, a driven gear B, a driven gear C, a winding reel, and a steel wire rope. Rotating the flip handle at the end of the driving gear can synchronously drive the winding reel to tighten or release the steel wire rope, thereby pulling the rotating counterweight block to quickly clamp or detach from the crankshaft body. The inner wall of the rotating counterweight block is provided with a silicone anti-slip pad to enhance friction. This structure achieves counterweight block disassembly and assembly in seconds through single-point manual operation, solving the problems of low efficiency and strong tool dependence of traditional bolt fixing methods, and significantly improving the maintenance efficiency of the engine in the ship's cabin.

[0006] The above-mentioned objectives of this utility model are achieved through the following technical means.

[0007] A disassembleable counterweight structure for a marine engine crankshaft is provided, comprising a crankshaft body and a counterweight mechanism mounted on the outer side of the crankshaft body.

[0008] Specifically, the counterweight mechanism includes a horizontal counterweight and two rotating counterweights. The two rotating counterweights and one horizontal counterweight are snapped onto the outside of the crankshaft body. The rotating counterweights have a silicone anti-slip pad on the side closest to the crankshaft body.

[0009] Preferably, a rotating counterweight is hinged to each side of the horizontal counterweight, the two rotating counterweights are symmetrically installed with respect to the vertical center line of the horizontal counterweight, and an adjustable quick-release assembly is installed between the two rotating counterweights and the horizontal counterweight.

[0010] The adjustable quick-release assembly includes a drive gear, which is movably mounted on one side of a horizontal counterweight via a bearing. A flip handle is mounted on one side of the drive gear. Driven gears B and C are respectively driven and mounted on both sides of the drive gear. The two driven gears B are symmetrically mounted relative to the vertical central axis of the drive gear, and the two driven gears C are symmetrically mounted relative to the vertical central axis of the drive gear.

[0011] Driven gears B and C are axially mounted with winding wheels on the side near the horizontal counterweight. A sliding support rod is movably mounted on the winding wheel via a bearing. The sliding support rod is slidably engaged with a rectangular groove, which is located on one side of the horizontal counterweight.

[0012] Each winding reel is equipped with a steel wire rope, and each steel wire rope is movably connected to a guide wheel. Four guide wheels are installed on one side of the horizontal counterweight. Each end of the steel wire rope is equipped with a support column. The four support columns are installed on both sides of the two rotating counterweights respectively. The four support columns are symmetrically installed with respect to the vertical center line of the horizontal counterweight.

[0013] This utility model includes a crankshaft body and a counterweight mechanism. The counterweight mechanism consists of a horizontal counterweight block and two hinged rotating counterweight blocks. An adjustable quick-release assembly is provided between the two. The adjustable quick-release assembly includes a driving gear, a driven gear B, a driven gear C, a winding wheel, and a steel wire rope. Rotating the flip handle at the end of the driving gear can synchronously drive the winding wheel to tighten or release the steel wire rope, thereby pulling the rotating counterweight block to quickly clamp or detach from the crankshaft body. The inner wall of the rotating counterweight block is provided with a silicone anti-slip pad to enhance friction. This structure achieves counterweight block disassembly and assembly in seconds through single-point manual operation, solving the problems of low efficiency and strong tool dependence of traditional bolt fixing methods, and significantly improving the efficiency of engine maintenance in the ship's cabin. Attached Figure Description

[0014] The present invention will be further described with reference to the accompanying drawings, but the content of the drawings does not constitute any limitation on the present invention.

[0015] Figure 1 This is a three-dimensional view of the overall structure of a marine engine crankshaft counterweight structure that is easy to disassemble, according to this utility model.

[0016] Figure 2 This is a partial three-dimensional view of a marine engine crankshaft counterweight structure that is easy to disassemble, according to this utility model.

[0017] from Figures 1 to 2 Including:

[0018] 1. Crankshaft body;

[0019] 2. Counterweight mechanism;

[0020] 3. Horizontal counterweight;

[0021] 4. Rotary counterweight;

[0022] 5. Adjustable quick-release assembly;

[0023] 6. Drive gear;

[0024] 7. Driven gear B;

[0025] 8. Driven gear C;

[0026] 9. Winding reel;

[0027] 10. Sliding support rod;

[0028] 11. Rectangular chute;

[0029] 12. Steel wire rope;

[0030] 13. Guide wheel;

[0031] 14. Supporting columns;

[0032] 15. Flip handle;

[0033] 16. Silicone anti-slip mat. Detailed Implementation

[0034] The present invention will be further described in conjunction with the following embodiments.

[0035] Example 1.

[0036] like Figure 1-2 As shown, a detachable marine engine crankshaft counterweight structure includes a crankshaft body 1, and a counterweight mechanism 2 is installed on the outer side of the crankshaft body 1.

[0037] like Figure 1-2 As shown, the counterweight mechanism 2 includes a horizontal counterweight block 3 and two rotating counterweight blocks 4. The two rotating counterweight blocks 4 and the horizontal counterweight block 3 are snapped onto the outside of the crankshaft body 1. The rotating counterweight block 4 is provided with a silicone anti-slip pad 16 on the side near the crankshaft body 1.

[0038] like Figure 1-2As shown, a rotating counterweight 4 is hinged to each side of the horizontal counterweight 3. The two rotating counterweights 4 are symmetrically installed with respect to the vertical center line of the horizontal counterweight 3. An adjustable quick-release assembly 5 is installed between the two rotating counterweights 4 and the horizontal counterweight 3.

[0039] like Figure 1-2 As shown, the adjustable quick-release assembly 5 includes a drive gear 6, which is movably mounted on one side of the horizontal counterweight 3 via a bearing. A flip handle 15 is mounted on one side of the drive gear 6. Driven gears B 7 and C 8 are respectively driven and mounted on both sides of the drive gear 6. The two driven gears B 7 are symmetrically mounted relative to the vertical central axis of the drive gear 6, and the two driven gears C 8 are symmetrically mounted relative to the vertical central axis of the drive gear 6.

[0040] like Figure 1-2 As shown, driven gear B 7 and driven gear C 8 are axially driven with a winding wheel 9 on the side near the horizontal counterweight 3. A sliding support rod 10 is movably mounted on the winding wheel 9 via a bearing. The sliding support rod 10 is slidably engaged with a rectangular groove 11, which is located on one side of the horizontal counterweight 3.

[0041] like Figure 1-2 As shown, each winding wheel 9 is equipped with a steel wire rope 12, and each steel wire rope 12 is movably abutted by a guide wheel 13. The four guide wheels 13 are installed on one side of the horizontal counterweight 3. Each steel wire rope 12 is equipped with a support column 14 at its end. The four support columns 14 are respectively installed on both sides of the two rotating counterweights 4. The four support columns 14 are symmetrically installed with respect to the vertical center line of the horizontal counterweight 3.

[0042] like Figure 1-2 As shown, rotating the flip handle 15 clockwise drives the drive gear 6 to rotate, which in turn drives the driven gears B 7 and C 8 to rotate. This causes the winding wheel 9 driven by the driven gears B 7 and C 8 to tighten the wire rope 12, pulling the support column 14 to move towards the horizontal counterweight 3. The rotating counterweight 4 rotates inward around the hinge point, causing the silicone anti-slip pad 16 to press against the crankshaft body 1. Rotating the flip handle 15 counterclockwise releases the wire rope 12 from the winding wheel 9, and the rotating counterweight 4 flips outward and detaches from the crankshaft body 1 under the action of gravity, achieving quick disassembly.

[0043] The clamping and release of the rotating counterweights 4 on both sides can be controlled simultaneously by a single rotation of the flip handle 15. No tools are required, and the disassembly time is reduced to the second level. The silicone anti-slip pad 16 enhances friction while compensating for minor unevenness on the crankshaft surface, ensuring locking reliability. The gear set wire rope 12 mechanism amplifies the torque. A light manual rotation of the flip handle 15 can generate high locking force. The symmetrical layout of the double rotating counterweights ensures the dynamic balance and stability of the crankshaft.

[0044] This invention involves inserting a horizontal counterweight 3 into the middle of the crankshaft body 1, flipping the two rotating counterweights 4 inward so that their silicone anti-slip pads 16 adhere to the surface of the crankshaft body 1, and rotating the flip handle 15 clockwise to drive the winding wheel 9 through the gear set to tighten the steel wire rope 12. The traction support column 14 drives the rotating counterweights 4 to lock the crankshaft body 1. Disassembly can be performed by reversing the operation. This structure is suitable for the rapid maintenance of engine crankshafts in the narrow space of a ship's cabin.

[0045] This utility model includes a crankshaft body 1 and a counterweight mechanism 2. The counterweight mechanism 2 consists of a horizontal counterweight block 3 and two hinged rotating counterweight blocks 4. An adjustable quick-release assembly 5 is provided between the two. The adjustable quick-release assembly 5 includes a driving gear 6, a driven gear B 7, a driven gear C 8, a winding wheel 9, and a steel wire rope 12. Rotating the flip handle 15 at the end of the driving gear 6 can synchronously drive the winding wheel 9 to tighten or release the steel wire rope 12, thereby pulling the rotating counterweight blocks 4 to quickly clamp or detach from the crankshaft body 1. The inner wall of the rotating counterweight blocks 4 is provided with a silicone anti-slip pad 16 to enhance friction. This structure achieves counterweight block disassembly and assembly in seconds through single-point manual operation, solving the problems of low efficiency and strong tool dependence of traditional bolt fixing methods, and significantly improving the efficiency of engine maintenance in the ship's cabin.

[0046] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit the scope of protection of this utility model. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the essence and scope of the technical solutions of this utility model.

Claims

1. A marine engine crankshaft counterweight structure which is easy to disassemble, comprising a crankshaft body, characterized by: A counterweight mechanism is installed on the outer side of the crankshaft body; The counterweight mechanism includes a horizontal counterweight and two rotary counterweights. The two rotary counterweights and the horizontal counterweight are snapped onto the outside of the crankshaft body. A rotary counterweight is hinged to each side of the horizontal counterweight. The two rotary counterweights are symmetrically installed relative to the vertical center line of the horizontal counterweight. An adjustable quick-release assembly is installed between the two rotary counterweights and the horizontal counterweight. The adjustable quick-release assembly includes a drive gear, which is movably mounted on one side of the horizontal counterweight via bearings. Driven gears B and C are respectively driven and mounted on both sides of the drive gear. The two driven gears B are symmetrically mounted relative to the vertical central axis of the drive gear, and the two driven gears C are symmetrically mounted relative to the vertical central axis of the drive gear. A winding wheel is axially driven and mounted on the side of the driven gears B and C closest to the horizontal counterweight. A sliding support rod is movably mounted on the axial direction of the winding wheel via bearings. The sliding support rod is slidably engaged with a rectangular groove, which is formed on one side of the horizontal counterweight. A steel wire rope is mounted on each winding wheel, and a guide wheel is movably abutted on each steel wire rope. Four guide wheels are mounted on one side of the horizontal counterweight. A support column is mounted at the end of each steel wire rope. The four support columns are respectively mounted on both sides of the two rotating counterweights, and are symmetrically mounted relative to the vertical center line of the horizontal counterweight.

2. A marine engine crankshaft counterweight structure according to claim 1, characterized in that: A flip handle is installed on one side of the drive gear, and a silicone anti-slip pad is provided on the side of the rotary counterweight near the crankshaft body.

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