Flywheel casing locking structure

Abstract

The utility model discloses a locking structure of a flywheel casing, belongs to the technical field of engine accessories, and solves the problem that a thrust plate and a bearing bush of a crankshaft are damaged due to the fact that shafting parts are extremely easy to move when an engine is carried. The locking structure of the flywheel casing comprises a locking block and a fastening bolt, one side of the locking block is provided with an arc-shaped fulcrum, one side of the arc-shaped fulcrum is provided with a first inclined plane, the other side of the arc-shaped fulcrum is provided with a second inclined plane, the locking block is provided with a missed disassembly prevention structure, the flywheel casing is provided with a mounting opening, and the fastening bolt is arranged on the mounting opening. The locking block is movably inserted into the mounting opening, the arc-shaped fulcrum is in contact with the inner wall of the mounting opening, a mounting hole is formed in the other side of the locking block, a first threaded hole is formed in the flywheel shell, and a fastening bolt is in threaded connection with the interior of the mounting hole. According to the locking structure of the flywheel shell, collision of parts such as a flywheel set in the carrying process is effectively avoided.

Description

Technical Field

[0001] This utility model relates to the field of engine parts technology, and more specifically, it relates to a locking structure for a flywheel housing. Background Technology

[0002] The flywheel housing is one of the components at the power output end of an engine. It serves as a safety cover for the flywheel, an energy storage component, and mainly functions to prevent dust and protect the flywheel during rotation and installation.

[0003] Existing flywheel housings generally do not have the function of locking the crankshaft flywheel assembly during transportation. In large engine applications, due to the large mass of shaft system components such as the crankshaft and flywheel assembly, even a very small tilt angle of the engine during hoisting and transportation of the entire engine can cause movement of the shaft system components, which may lead to damage to components such as crankshaft thrust washers and bearings, ultimately resulting in engine failures such as bearing failure and crankshaft failure. Utility Model Content

[0004] The technical problem to be solved by this utility model is to address the above-mentioned shortcomings of the prior art by providing a locking structure for a flywheel housing, which can effectively protect the flywheel assembly and other shaft components from collision and damage during engine transportation, thereby extending the service life of the engine.

[0005] The technical solution of this utility model is as follows: a locking structure for a flywheel housing includes a locking block. One side of the locking block has an arc-shaped fulcrum. A first inclined surface is provided on one side of the locking block near the arc-shaped fulcrum, and a second inclined surface is provided on the locking block on the other side of the arc-shaped fulcrum. The locking block has an anti-leakage disassembly structure. The locking block is movably inserted into an installation opening in the flywheel housing, and the arc-shaped fulcrum contacts the inner wall of the installation opening. The installation opening extends to one side of the flywheel gear ring. The distance from the side of the locking block to the flywheel gear ring is less than the distance from the first inclined surface to the inner wall of the installation opening. The other side of the locking block has an installation hole. The flywheel housing has a first threaded hole, and a fastening bolt is threaded into the first threaded hole, and the fastening bolt is movably inserted into the installation hole.

[0006] Furthermore, the distance from the central axis of the mounting hole to the arc-shaped fulcrum is greater than the distance from the arc-shaped fulcrum to one end of the locking block.

[0007] Furthermore, the anti-disassembly structure includes an anti-disassembly rod, and a second threaded hole is provided on the first inclined surface, with one end of the anti-disassembly rod threadedly connected to the second threaded hole.

[0008] Furthermore, the anti-tamper rod includes a fixed rod and a movable rod. The fixed rod is L-shaped, with one end of the fixed rod installed on the first inclined surface and the other end of the fixed rod threadedly connected to the movable rod.

[0009] Furthermore, the width of the mounting opening is adapted to the width of the locking block.

[0010] Furthermore, a nut is threaded onto the fastening bolt, and one side of the nut contacts the outer wall surface of the flywheel housing.

[0011] Furthermore, the diameter of the mounting hole is larger than the diameter of the fastening bolt, and one end of the mounting hole is provided with a tapered opening.

[0012] Beneficial effects

[0013] Compared with the prior art, this utility model has the following advantages:

[0014] This utility model discloses a locking structure for a flywheel housing. By tightening the fastening bolts, the upper end of the locking block is subjected to a horizontal pressure to the left. At this time, the locking block rotates counterclockwise around the arc-shaped fulcrum, and the lower end of the locking block rotates until it contacts the flywheel gear ring inside the mounting hole. The locking block then applies a horizontal pressure to the right to the flywheel gear ring, thereby achieving the purpose of locking it. During engine transportation, this structure can effectively protect the flywheel assembly and other shaft components from collisions and damage, thus extending the engine's service life. Attached Figure Description

[0015] Figure 1 This is a top view of the structure of the present invention in use;

[0016] Figure 2 This is a schematic diagram of the front cross-sectional structure of the present invention in use;

[0017] Figure 3 This is a three-dimensional structural diagram of the locking block of this utility model;

[0018] Figure 4 This is a cross-sectional structural diagram of the locking block in this utility model.

[0019] Wherein: 1-locking block, 2-arc fulcrum, 3-first inclined surface, 4-second inclined surface, 5-flywheel housing, 6-mounting port, 7-mounting hole, 8-fastening bolt, 9-nut, 10-anti-disassembly rod, 11-second threaded hole, 12-conical opening, 13-flywheel gear ring, 101-fixed rod, 102-movable rod. Detailed Implementation

[0020] The present invention will be further described below with reference to specific embodiments shown in the accompanying drawings.

[0021] See Figure 1-4A locking structure for a flywheel housing includes a locking block 1. One side of the locking block 1 has an arc-shaped fulcrum 2. A first inclined surface 3 is provided on the locking block 1 on one side of the arc-shaped fulcrum 2, and a second inclined surface 4 is provided on the locking block 1 on the other side of the arc-shaped fulcrum 2. The locking block 1 has an anti-leakage disassembly structure. The locking block 1 is movably inserted into an installation opening 6 in the flywheel housing 5, with the arc-shaped fulcrum 2 contacting the inner wall of the installation opening 6. The installation opening 6 extends to one side of the flywheel gear ring 13. The distance from the side of the locking block 1 to the flywheel gear ring 13 is less than the distance from the first inclined surface 3 to the inner wall of the installation opening 6. The other side of the locking block 1 has an installation hole 7. The flywheel housing 5 has a first screw... The first threaded hole is threaded with a fastening bolt 8, which is movably inserted into the mounting hole 7. When locking, tightening the fastening bolt 8 causes the upper end of the locking block 1 to be subjected to horizontal pressure to the left. At this time, the locking block 1 rotates counterclockwise around the arc-shaped fulcrum 2, and the lower end of the locking block 1 rotates until one side of the locking block 1 contacts the flywheel gear ring 13 in the mounting port 6. The locking block 1 then applies horizontal pressure to the right to the flywheel gear ring 13, thereby achieving the purpose of locking it. During engine transportation, this can effectively protect the flywheel assembly and other shaft parts from collision and damage, thereby extending the service life of the engine.

[0022] In this embodiment, the distance from the central axis of the mounting hole 7 to the arc-shaped fulcrum 2 is greater than the distance from the arc-shaped fulcrum 2 to one end of the locking block 1. The locking block 1 uses the lever principle to achieve locking. Therefore, the force required to lock the shaft parts inside the flywheel housing 5 is inversely proportional to its lever arm. The distance from the central axis of the mounting hole 7 to the arc-shaped fulcrum 2 is greater than the distance from the arc-shaped fulcrum 2 to the end face of the locking block 1 away from the mounting hole 7. The fact that the distance from the central axis of the mounting hole 7 to the arc-shaped fulcrum 2 is greater than the distance from the arc-shaped fulcrum 2 to one end of the locking block 1 helps to reduce the force required to lock the shaft parts inside the flywheel housing 5 and effectively improves the locking effect.

[0023] In this embodiment, the anti-removal structure includes an anti-removal rod 10. A second threaded hole 11 is provided on the first inclined surface 3. One end of the anti-removal rod 10 is threadedly connected to the second threaded hole 11. When the locking block 1 is installed on the flywheel housing 5, the anti-removal rod 10 is installed on the locking block 1, and the anti-removal rod 10 extends outside the flywheel housing 5. The structure is obvious and can remind the operator that the locking block 1 has not been removed. It restricts the operator to install the relevant accessories of the flywheel housing 5 only after the locking block 1 and related accessories are removed, thus preventing the operator from starting the engine without removing the locking block 1, which could cause a malfunction.

[0024] In this embodiment, the anti-dismantling rod 10 includes a fixed rod 101 and a movable rod 102. The fixed rod 101 is L-shaped, with one end mounted on the first inclined surface 3 and the other end threadedly connected to the movable rod 102. The anti-dismantling rod 10 is threadedly connected to the locking block 1. When the locking block 1 is already installed, the anti-dismantling rod 10 needs to be rotated to install or remove it. The anti-dismantling rod 10 can be separated into the fixed rod 101 and the movable rod 102. The fixed rod 101 and the movable rod 102 can be threadedly connected, which can reduce the space required to install the anti-dismantling rod 10 and facilitate installation.

[0025] In this embodiment, the width of the mounting opening 6 is adapted to the width of the locking block 1, which can restrict the locking block to move back and forth only within the mounting opening 6, thus preventing the locking block 1 from shifting left and right during the locking process and affecting its effect.

[0026] In this embodiment, a nut 9 is threaded onto the fastening bolt 8. One side of the nut 9 contacts the outer wall of the flywheel housing 5. When the fastening bolt 8 is tightened, the flywheel gear ring 13 and other components inside the flywheel housing 5 are locked by the locking block 1. Then, the nut 9 is tightened to further reinforce the fastening bolt 8 and prevent it from loosening due to vibration during transportation, thereby affecting the locking effect.

[0027] In this embodiment, the diameter of the mounting hole 7 is larger than the diameter of the fastening bolt 8. When the fastening bolt 8 is tightened, the locking block 1 rotates around the arc-shaped fulcrum 2. The diameter of the mounting hole 7 is much larger than the diameter of the fastening bolt 8, which can prevent the fastening bolt 8 from interfering with the inner wall of the mounting hole 7 during the tightening process. In addition, one end of the mounting hole 7 is provided with a tapered opening 12. The tapered opening 12 on the mounting hole 7 makes it easy for the fastening bolt 8 to be aligned with the mounting hole 7 and inserted into the mounting hole 7.

[0028] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several modifications and improvements can be made without departing from the structure of the present utility model. These modifications and improvements will not affect the effectiveness of the present utility model or the practicality of the patent.

Claims

1. A locking structure for a flywheel housing, characterized in that, The device includes a locking block (1), one side of which has an arc-shaped fulcrum (2). A first inclined surface (3) is provided on the locking block (1) on one side of the arc-shaped fulcrum (2), and a second inclined surface (4) is provided on the locking block (1) on the other side of the arc-shaped fulcrum (2). The locking block (1) has an anti-disassembly structure. The locking block (1) is movably inserted into the mounting opening (6) in the flywheel housing (5), and the arc-shaped fulcrum (2) and the mounting opening (6) are connected... The mounting port (6) extends to one side of the flywheel ring gear (13). The distance from the side of the locking block (1) to the flywheel ring gear (13) is less than the distance from the first inclined surface (3) to the inner wall of the mounting port (6). The other side of the locking block (1) is provided with a mounting hole (7). The flywheel housing (5) is provided with a first threaded hole. The first threaded hole is internally threaded with a fastening bolt (8), and the fastening bolt (8) is movably inserted into the mounting hole (7).

2. The locking structure for a flywheel housing according to claim 1, characterized in that, The distance from the central axis of the mounting hole (7) to the arc-shaped fulcrum (2) is greater than the distance from the arc-shaped fulcrum (2) to one end of the locking block (1).

3. The locking structure for a flywheel housing according to claim 1, characterized in that, The anti-disassembly structure includes an anti-disassembly rod (10), and a second threaded hole (11) is provided on the first inclined surface (3). One end of the anti-disassembly rod (10) is threadedly connected to the second threaded hole (11).

4. The locking structure for a flywheel housing according to claim 3, characterized in that, The anti-dismantling rod (10) includes a fixed rod (101) and a movable rod (102). The fixed rod (101) is L-shaped. One end of the fixed rod (101) is installed on the first inclined surface (3), and the other end of the fixed rod (101) is threadedly connected to the movable rod (102).

5. The locking structure for a flywheel housing according to claim 1, characterized in that, The width of the mounting port (6) is adapted to the width of the locking block (1).

6. The locking structure for a flywheel housing according to claim 1, characterized in that, The fastening bolt (8) is threaded with a nut (9), and one side of the nut (9) is in contact with the outer wall of the flywheel housing (5).

7. The locking structure for a flywheel housing according to claim 1, characterized in that, The diameter of the mounting hole (7) is larger than the diameter of the fastening bolt (8), and one end of the mounting hole (7) is provided with a tapered opening (12).

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