Ductile iron crankshaft for engine
By setting the first spring-driven card block reset and connection in the engine ductile iron crankshaft, combined with the design of the limit slot and limit block, the problem of unstable crankshaft fixing gear in the prior art is solved, and the stable fixation and stability improvement of the gear is achieved.
Patent Information
- Application Number
- CN202421725838.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-22
- Publication Date
- 2025-04-04
- Estimated Expiration
- 2034-07-22
AI Technical Summary
When the existing engine ductile iron crankshaft is fixed, the fixing method of the slot is too simple, which causes the gear to move when it rotates, causing the gear to disengage from the crankshaft and affects normal operation.
An engine ductile iron crankshaft is designed, and the connecting plate and the clamp are provided with a first spring to make the clamping plate and the clamping block perform reset movement, so that the clamping block is connected to the inside of the clamping slot, and the gears are securely fixed. In addition, through the coordination of the limit slot and the limit block, the gear does not slide out of the connecting shaft, further improving stability.
The stable fixation of the gear is achieved, avoiding the sliding of the gear during operation, providing good stability, and ensuring the normal operation of the engine.
Smart Images
Figure CN222717306U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of engines, in particular to a ductile iron crankshaft of an engine. Background Art
[0002] The crankshaft is the most important component in the engine. Whether it is a two-cylinder engine, a three-cylinder engine or a four-cylinder engine, the crankshaft is needed as the main connecting transmission component. It bears the force transmitted by the connecting rod, and converts it into torque output through the crankshaft and drives other accessories on the engine to work. 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 torsional loads. Therefore, the crankshaft is required to have sufficient strength and rigidity, the journal surface needs to be wear-resistant, work evenly and have good balance. One end of the ductile iron crankshaft of the existing engine needs to be fixed with a gear to work, and the ductile iron crankshaft of the existing engine is generally fixed by a single slot when fixing the gear. The fixing method is too simple, which may cause the gear to move when it rotates, thereby causing the gear to detach from the crankshaft and affect normal work. Utility Model Content
[0003] The utility model provides a ductile iron crankshaft of an engine to solve the problems raised in the above background technology.
[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is:
[0005] A ductile iron crankshaft of an engine comprises a crankshaft body, a gear, and a fixed component, wherein the crankshaft body comprises a connecting shaft, the gear is movably connected to the outer wall of the connecting shaft, a clamping groove is provided on the inner wall of the gear, a first movable groove is provided on the upper and lower ends of the connecting shaft, the fixed component comprises a clamping block and a connecting plate, the clamping block is movably connected to the inside of the first movable groove, and a first spring is fixedly connected to the bottom of the connecting plate.
[0006] A further improvement of the technical solution of the utility model is that: the connecting plate is fixedly connected to one end of the bottom of the clamping block, and one end of the first spring away from the connecting plate is fixedly connected to the bottom of the first movable groove.
[0007] By adopting the above technical solution, the first spring in the solution can drive the connecting plate to drive the clamping block to perform a reset movement, so that the clamping block is clamped in the inside of the clamping slot, so that the gear is stably fixed.
[0008] A further improvement of the technical solution of the utility model is that: a first stopper is fixedly connected to one end of the connecting plate away from the clamping block, a slot is formed at one end of the first movable groove, and the first stopper is movably connected to the inside of the slot.
[0009] A further improvement of the technical solution of the utility model is that: both ends of the first stopper are fixedly connected to limiting blocks, limiting grooves are provided on the inner walls of both sides of the slot, and the first stopper is slidably connected to the inside of the limiting groove through the limiting blocks.
[0010] By adopting the above technical solution, the limit groove and the limit block in the solution can play a limiting role, so that the first block can make a linear sliding motion. The first block can resist the gear so that the gear will not slide out of the connecting shaft, further improving stability.
[0011] A further improvement of the technical solution of the utility model is that: second movable grooves are opened on both sides of the connecting shaft, and a resisting assembly is provided inside the second movable groove. The resisting assembly includes a second stopper, and the second stopper is movably connected to the inside of the second movable groove.
[0012] A further improvement of the technical solution of the utility model is that: one end of the second stopper is fixedly connected to a second spring, and one end of the second spring away from the second stopper is fixedly connected to the inner rear wall of the second movable groove.
[0013] By adopting the above technical solution, the second spring in the solution can drive the second stopper to perform a reset movement, so that the second stopper can resist the gear, so that the gear will not slip out of the connecting shaft, further improving stability.
[0014] A further improvement of the technical solution of the utility model is that: sliding grooves are opened on both sides of the inner wall of the second movable groove, and sliding blocks are fixedly connected to both ends of the second stopper, and the second stopper is slidably connected to the inside of the second movable groove through the sliding block and the sliding groove.
[0015] By adopting the above technical solution, the slider and the slide groove in the solution can play a limiting role, so that the second stopper can slide linearly and will not slide out of the second movable groove.
[0016] A further improvement of the technical solution of the utility model is that: the connecting shaft is fixedly connected to one end of the crankshaft body, the end of the connecting shaft away from the crankshaft body is fixedly connected to a supporting shaft, and the outer wall of the supporting shaft is provided with an oil pump gear.
[0017] Due to the adoption of the above technical solution, the utility model has achieved the following technical progress compared with the prior art:
[0018] 1. The utility model provides a ductile iron crankshaft of an engine, which drives a connecting plate to drive a clamping block to perform a reset movement through a first spring, so that the clamping block is clamped in the interior of a clamping slot, so that the gear is stably fixed, ensuring that the gear will not slide during operation, and providing better stability.
[0019] 2. The utility model provides a ductile iron crankshaft for an engine, which can resist the gear by cooperating with the second spring and the second stopper in the blocking assembly, so that the gear will not slide out of the connecting shaft, thereby further improving stability. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0021] Figure 1 is a front view of a ductile iron crankshaft of an engine according to an embodiment of the utility model;
[0022] Figure 2 It is a gear structure diagram of a ductile iron crankshaft of an engine according to an embodiment of the utility model;
[0023] Figure 3 It is a structural diagram of a crankshaft body of a ductile iron crankshaft of an engine according to an embodiment of the utility model;
[0024] Figure 4 This is a diagram of the internal structure of the connecting shaft of the ductile iron crankshaft of the engine according to the embodiment of the utility model;
[0025] Figure 5 The ductile iron crankshaft of the engine according to the embodiment of the utility model Figure 4 The enlarged result diagram at A in the middle;
[0026] Figure 6 This is a diagram of the internal structure of the connecting shaft of the ductile iron crankshaft of the engine according to the embodiment of the utility model;
[0027] Figure 7 The ductile iron crankshaft of the engine according to the embodiment of the utility model Figure 5 Enlarged structural diagram at point B in the middle.
[0028] In the figure: 1. crankshaft body; 101. connecting shaft; 102. first movable groove; 103. limiting groove; 104. second movable groove; 105. slide groove; 2. gear; 201. slot; 3. oil pump gear; 4. fixing assembly; 401. block; 402. first spring; 403. connecting plate; 404. first stopper; 405. limiting block; 5. resisting assembly; 501. second stopper; 502. slider; 503. second spring. DETAILED DESCRIPTION
[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0030] The present invention is further described in detail below in conjunction with the embodiments:
[0031] Example 1
[0032] like Figure 1-7 As shown, the utility model provides a ductile iron crankshaft of an engine, including a crankshaft body 1, a gear 2, and a fixing assembly 4, wherein the crankshaft body 1 includes a connecting shaft 101, the gear 2 is movably connected to the outer wall of the connecting shaft 101, a clamping groove 201 is provided on the inner wall of the gear 2, and a first movable groove 102 is provided at the upper and lower ends of the connecting shaft 101, the fixing assembly 4 includes a clamping block 401 and a connecting plate 403, the clamping block 401 is movably connected to the inside of the first movable groove 102, and a first spring 402 is fixedly connected to the bottom of the connecting plate 403.
[0033] In this embodiment, the gear 2 is inserted into the outer wall of the connecting shaft 101, and the first spring 402 is provided to drive the connecting plate 403 to drive the clamping block 401 to perform a reset movement, so that the clamping block 401 is clamped in the inside of the clamping slot 201, so that the gear 2 is stably fixed, ensuring that the gear 2 will not slip during operation, providing better stability.
[0034] Example 2
[0035] like Figure 1-7 As shown, on the basis of Example 1, the utility model provides a technical solution: preferably, the connecting plate 403 is fixedly connected to one end of the bottom of the block 401, the end of the first spring 402 away from the connecting plate 403 is fixedly connected to the bottom of the first movable groove 102, the end of the connecting plate 403 away from the block 401 is fixedly connected with a first stopper 404, one end of the first movable groove 102 is provided with a slot, the first stopper 404 is movably connected to the inside of the slot, both ends of the first stopper 404 are fixedly connected to limiting blocks 405, limiting grooves 103 are provided on the inner walls of both sides of the slot, the first stopper 404 is slidably connected to the inside of the limiting groove 103 through the limiting blocks 405, second movable grooves 104 are provided on both sides of the connecting shaft 101, the inside of the second movable groove 104 is provided with a resisting assembly 5, the resisting assembly 5 includes a second stopper 501, and the second stopper 501 is movably connected to the inside of the second movable groove 104.
[0036] In this embodiment, the first spring 402 can drive the connecting plate 403 to drive the clamping block 401 to perform a reset movement, so that the clamping block 401 is clamped in the inside of the clamping slot 201, so that the gear 2 is stably fixed, and the limiting groove 103 and the limiting block 405 can play a limiting role, so that the first stop block 404 can perform a linear sliding movement, and the first stop block 404 can resist the gear 2, so that the gear 2 will not slide out of the connecting shaft 101, thereby further improving the stability.
[0037] Example 3
[0038] like Figure 1-7 As shown, on the basis of Example 1 and Example 2, the utility model provides a technical solution: preferably, one end of the second stop block 501 is fixedly connected to the second spring 503, the end of the second spring 503 away from the second stop block 501 is fixedly connected to the inner rear wall of the second movable groove 104, and the inner wall of the second movable groove 104 is provided with sliding grooves 105 on both sides, and the two ends of the second stop block 501 are fixedly connected to the slider 502, and the second stop block 501 is slidably connected to the inside of the second movable groove 104 through the slider 502 and the sliding groove 105, the connecting shaft 101 is fixedly connected to one end of the crankshaft body 1, and the end of the connecting shaft 101 away from the crankshaft body 1 is fixedly connected to the support shaft, and the outer wall of the support shaft is provided with an oil pump gear 3.
[0039] In this embodiment, the second spring 503 can drive the second stop block 501 to perform a reset movement, so that the second stop block 501 can resist the gear 2, so that the gear 2 will not slide out of the connecting shaft 101, further improving the stability. The slider 502 and the slide groove 105 can play a limiting role, so that the second stop block 501 can perform a linear sliding movement, so that the second stop block 501 can perform a linear sliding movement and will not slide out of the second movable groove 104.
[0040] The following is a detailed description of the working principle of the ductile iron crankshaft of the engine.
[0041] like Figure 1-7 As shown, the first stopper 404 and the second stopper 501 are pressed and the first spring 402 and the second spring 503 are compressed, and then the gear 2 is inserted into the outer wall of the connecting shaft 101, and then the first stopper 404 and the second stopper 501 are released, and the first spring 402 drives the connecting plate 403 to drive the clamping block 401 to perform a reset movement, so that the clamping block 401 is clamped in the inside of the clamping slot 201, so that the gear 2 is stably fixed, and at the same time, the first stopper 404 is driven by the connecting plate 403 to perform a reset movement to resist the gear 2, and the second spring 503 drives the second stopper 501 to perform a reset movement, so that the second stopper 501 can resist the gear 2, thereby achieving the purpose of stabilizing the gear 2.
[0042] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not deviate from the spirit of the present invention are within the scope of protection of the present invention.
Claims
1. A ductile iron crankshaft for an engine, comprising a crankshaft body (1), a gear (2), and a fixing assembly (4), characterized in that: The crankshaft body (1) includes a connecting shaft (101), the gear (2) is movably connected to the outer wall of the connecting shaft (101), the inner wall of the gear (2) is provided with a clamping groove (201), the upper and lower ends of the connecting shaft (101) are provided with a first movable groove (102), the fixing component (4) includes a clamping block (401) and a connecting plate (403), the clamping block (401) is movably connected to the inside of the first movable groove (102), and the bottom of the connecting plate (403) is fixedly connected to a first spring (402).
2. The ductile iron crankshaft of an engine according to claim 1, characterized in that: The connecting plate (403) is fixedly connected to one end of the bottom of the clamping block (401), and one end of the first spring (402) away from the connecting plate (403) is fixedly connected to the bottom of the first movable groove (102).
3. The ductile iron crankshaft for an engine according to claim 1, characterized in that: One end of the connecting plate (403) away from the clamping block (401) is fixedly connected to a first stopper (404), one end of the first movable groove (102) is provided with an open groove, and the first stopper (404) is movably connected to the inside of the open groove.
4. The ductile iron crankshaft for an engine according to claim 3, characterized in that: The two ends of the first stopper (404) are fixedly connected to the limiting blocks (405), the inner walls on both sides of the slot are provided with limiting grooves (103), and the first stopper (404) is slidably connected to the inside of the limiting grooves (103) through the limiting blocks (405).
5. The ductile iron crankshaft for an engine according to claim 1, characterized in that: Second movable grooves (104) are provided on both sides of the connecting shaft (101), a resisting assembly (5) is provided inside the second movable groove (104), and the resisting assembly (5) includes a second stopper (501), and the second stopper (501) is movably connected to the inside of the second movable groove (104).
6. The ductile iron crankshaft for an engine according to claim 5, characterized in that: One end of the second stopper (501) is fixedly connected to a second spring (503), and one end of the second spring (503) away from the second stopper (501) is fixedly connected to the inner rear wall of the second movable groove (104).
7. The ductile iron crankshaft for an engine according to claim 5, characterized in that: Slide grooves (105) are provided on both sides of the inner wall of the second movable groove (104); sliders (502) are fixedly connected to the two ends of the second stopper (501); and the second stopper (501) is slidably connected to the inside of the second movable groove (104) via the sliders (502) and the slide grooves (105).
8. The ductile iron crankshaft for an engine according to claim 1, characterized in that: The connecting shaft (101) is fixedly connected to one end of the crankshaft body (1), and the end of the connecting shaft (101) away from the crankshaft body (1) is fixedly connected to a supporting shaft, and an outer wall of the supporting shaft is provided with an oil pump gear (3).