Sectional type crankshaft
By designing adjustment devices in the crank shaft, including round rods, slot rods, convex rods and threaded rings, the problem that existing crank shafts cannot adjust their length is solved, achieving higher ease of use and flexibility.
Patent Information
- Application Number
- CN202420693799.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-07
- Publication Date
- 2025-03-11
- Estimated Expiration
- 2034-04-07
AI Technical Summary
The existing crankshaft cannot adjust the length of the crank body arm according to the needs when used, resulting in reduced convenience and difficulty in matching with connectors of different widths.
A segmented crank shaft is designed, and an adjustment device is adopted to include a round rod, a groove rod, a convex rod and a threaded ring. By pushing the round rod and rotating the threaded ring, the length of the crank body arm is adjusted, and the mutual position is fixed through the threaded ring.
It achieves the convenience of the crank shaft when using it, and can adjust the length of the crank body arm according to needs, making it easy to match with connectors of different thicknesses, and improving the flexibility of use.
Smart Images
Figure CN222596543U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of crankshafts, in particular to a segmented crankshaft. Background Art
[0002] A crankshaft is a machine element used to convert linear motion into rotational motion. It has a wide range of applications in various mechanical systems, including internal combustion engines, compressors, gear machines, etc. The structure of a crankshaft includes a rotating shaft that causes rotational motion and a crank body arm connected to the center of the rotating shaft.
[0003] A crankshaft is usually composed of a main shaft and a crank body arm connected to the center of a rotating shaft. During production, the crankshaft is usually manufactured into one piece with a specified number of crank body arms, a crank body and a main shaft according to demand. After production, when in use, it is impossible to adjust the length of the crank body arm according to demand and connect connecting parts of different widths to the crank body arm, resulting in reduced convenience in using the crankshaft. Utility Model Content
[0004] The utility model aims to solve the problem that a crankshaft is usually composed of a main shaft and a crank body arm connected to the center of a rotating shaft, and during production, the crankshaft is usually manufactured into an integrated body with a specified number of crank body arms, a crank body and a main shaft according to demand, and after the production is completed, it is impossible to adjust the length of the crank body arm according to demand and connect connecting parts of different widths to the crank body arm during use, resulting in reduced convenience in using the crankshaft. A segmented crankshaft is proposed.
[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a segmented crank shaft, including a main shaft body, a main shaft neck is arranged on one side of the main shaft neck, a connecting rod is fixedly connected to one side of the main shaft neck, a crank body is fixedly connected to one side of the connecting rod, an adjusting device is arranged on one side of the crank body, the adjusting device includes a round rod and a groove rod, one end of the round rod and the groove rod are respectively fixedly connected to the crank body, one end of the round rod is fixedly connected to a convex rod, one side of the main shaft neck is provided with multiple sections of connecting rods, a crank body and an adjusting device, one end of the convex rod is fixedly connected to a screw rod, the outer surface of the screw rod is threadedly connected to a threaded ring, a groove is opened inside the groove rod, the outer surface of the convex rod is slidably connected to the inner wall of the groove, and the outer surface of the screw rod slides on the inner wall of the groove rod.
[0006] The effect achieved by the above components is: by setting the slot rod, when using the crank shaft, the round rod can be pushed to control the convex rod to slide on the inner wall of the slot to adjust the length of the convex rod extending or retracted into the slot rod, thereby changing the total length of the slot rod and the round rod, and then the threaded ring is rotated to make the threaded ring move on the outer surface of the screw rod and press against the outer surface of the crank body at one end of the slot rod to fix the relative position between the slot rod and the round rod.
[0007] Preferably, one end of the screw is fixedly connected to a cylindrical block, and the radius of the cylindrical block is larger than the radius of the screw.
[0008] The effect achieved by the above components is: by setting the cylindrical block, the movement range of the threaded ring on the outer surface of the screw can be limited, thereby preventing the threaded ring from falling off the surface of the screw when moving away from the screw.
[0009] Preferably, a plurality of protrusions are fixedly connected to the outer surface of the threaded ring, and the protrusions are distributed in a circle on the outer surface of the threaded ring.
[0010] The effect achieved by the above components is that the friction between the hand and the outer surface of the threaded ring can be increased by pressing the protrusion on the outer surface of the threaded ring with the hand, so that the threaded ring is more convenient to rotate and the hand is not easy to slip.
[0011] Preferably, one side of the threaded ring is fixedly connected with an annular sheet, and the annular sheet is made of rubber material.
[0012] The effect achieved by the above components is that by providing the annular sheet made of rubber material, the side of the threaded ring provided with the annular sheet is pressed tightly against the outer surface of the crank body to fix the positions of the round rod and the groove rod more tightly and not easy to slide.
[0013] Preferably, two positioning grooves are provided on one side of the groove rod, and two positioning plates are fixedly connected to one side of the round rod, and the outer surfaces of the two positioning plates slide on the inner walls of the positioning grooves.
[0014] The effect achieved by the above components is that when the round rod moves, the outer surface of the positioning piece will slide on the inner wall of the positioning groove. By arranging the positioning piece inside the positioning groove, the mutual angle between the round rod and the groove rod can be further limited, thereby avoiding shaking between the round rod and the groove rod as much as possible.
[0015] Preferably, the outer surface of the main shaft neck is provided with an auxiliary device, and the auxiliary device includes a circular ring, the inner wall size and shape of the circular ring are adapted to the size and shape of the outer surface of the main shaft neck, and the outer surface of the main shaft neck is provided with a plurality of through holes, and the through holes are distributed in a circle on the outer surface of the main shaft neck.
[0016] The effect achieved by the above components is: when using the crankshaft, lubricating oil can be added to the through hole to facilitate lubrication of the main shaft body, and then the ring is sleeved on the outer surface of the main shaft neck to cover the through hole to prevent the lubricating oil from leaking as much as possible.
[0017] Preferably, a positioning strip is fixedly connected to the outer surface of the main journal, and the positioning strip protrudes from the outer surface of the main journal.
[0018] The effect achieved by the above components is that when the ring is sleeved on the outer surface of the main shaft neck, one side of the ring can be fitted on one side of the positioning strip, and the position of the ring on the outer surface of the main shaft neck can be simply positioned by the positioning strip.
[0019] Preferably, convex rings are fixedly connected to both sides of the circular ring, and the convex rings protrude from both side edges of the circular ring.
[0020] The effect achieved by the above components is that the convex ring on the outer surface of the ring can be pinched by hand to pull the ring more conveniently to remove the ring from the outer surface of the main shaft neck, so as to add lubricating oil to the through hole.
[0021] Compared with the prior art, the advantages and positive effects of the utility model are:
[0022] In the utility model, an adjustment device is provided, and the distance between the round rod and the groove rod can be adjusted by pulling the round rod to make the protruding rod slide on the inner wall of the groove, thereby changing the distance between the two crank bodies and fixing them by rotating the threaded ring, so that when the crank shaft is used, the length of the crank body arm rod can be adjusted as needed to facilitate clamping of connecting pieces of different thicknesses between the two crank bodies, thereby increasing the convenience of the crank shaft. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;
[0024] Figure 2 It is a schematic diagram of the three-dimensional structure of the crank body of the utility model;
[0025] Figure 3 It is a three-dimensional structural schematic diagram of the slot rod of the utility model;
[0026] Figure 4 It is a three-dimensional structural schematic diagram of the screw rod of the utility model;
[0027] Figure 5 It is a three-dimensional structural schematic diagram of the main shaft body of the utility model;
[0028] Figure 6 It is a schematic diagram of the three-dimensional structure of the circular ring of the utility model.
[0029] Legend: 1. Main shaft body; 2. Adjusting device; 3. Auxiliary device; 4. Main shaft neck; 5. Connecting rod; 6. Crank body; 21. Round rod; 22. Slotted rod; 23. Protruding rod; 24. Slot; 25. Screw; 26. Threaded ring; 27. Protrusion; 28. Ring plate; 29. Cylindrical block; 210. Positioning plate; 211. Positioning groove; 31. Through hole; 32. Round ring; 33. Protruding ring; 34. Positioning strip. DETAILED DESCRIPTION
[0030] Embodiment 1, as Figure 1-4 As shown, a segmented crankshaft comprises a main shaft body 1, a main shaft journal 4 is arranged on one side of the main shaft journal 4, a connecting rod 5 is fixedly connected to one side of the main shaft journal 4, a crank body 6 is fixedly connected to one side of the connecting rod 5, an adjusting device 2 is arranged on one side of the crank body 6, the adjusting device 2 comprises a round rod 21 and a groove rod 22, one end of the round rod 21 and the groove rod 22 are respectively fixedly connected to the crank body 6, one end of the round rod 21 is fixedly connected to a convex rod 23, one side of the main shaft journal 4 is provided with multiple sections of connecting rods 5, the crank body 6 and the adjusting device 2, one end of the convex rod 23 is fixedly connected to a screw rod 25, the outer surface of the screw rod 25 is threadedly connected to a threaded ring 26, a groove 24 is provided inside the groove rod 22, the outer surface of the convex rod 23 is slidably connected to the inner wall of the groove 24, the outer surface of the screw rod 25 slides on the inner wall of the groove rod 22, and by arranging the groove rod 22, When using the crank shaft, the round rod 21 can be pushed to control the protruding rod 23 to slide on the inner wall of the slot 24 to adjust the length of the protruding rod 23 extending out or retracting into the slot rod 22, thereby changing the total length of the slot rod 22 and the round rod 21. Then, the threaded ring 26 can be rotated to make the threaded ring 26 move on the outer surface of the screw rod 25 and press against the outer surface of the crank body 6 at one end of the slot rod 22 to fix the relative position between the slot rod 22 and the round rod 21. By setting the adjusting device 2, the round rod 21 can be pulled to make the protruding rod 23 slide on the inner wall of the slot 24 to adjust the distance between the round rod 21 and the slot rod 22, change the distance between the two crank bodies 6 and fix them by rotating the threaded ring 26, so that when using the crank shaft, the length of the arm of the crank body 6 can be adjusted as needed, which is convenient for clamping connecting parts of different thicknesses between the two crank bodies 6, thereby increasing the convenience of the crank shaft.
[0031] Reference Figure 1-4 As shown, in this embodiment: one end of the screw rod 25 is fixedly connected to a cylindrical block 29, the radius of the cylindrical block 29 is larger than the radius of the screw rod 25, and the cylindrical block 29 can be provided to limit the movement range of the threaded ring 26 on the outer surface of the screw rod 25, so as to prevent the threaded ring 26 from falling off the surface of the screw rod 25 and being lost when the threaded ring 26 moves in a direction away from the screw rod 25, and a plurality of protrusions 27 are fixedly connected to the outer surface of the threaded ring 26, and the protrusions 27 are distributed in a circle on the outer surface of the threaded ring 26, and the friction between the hand and the outer surface of the threaded ring 26 can be increased by pressing the protrusions 27 on the outer surface of the threaded ring 26, so that it is more convenient to rotate the threaded ring 26 and the hand is not easy to slip.
[0032] Reference Figure 1-4As shown, in the present embodiment: one side of the threaded ring 26 is fixedly connected with an annular sheet 28, and the annular sheet 28 is made of rubber material. By arranging the annular sheet 28 made of rubber material, the side of the threaded ring 26 provided with the annular sheet 28 is pressed tightly against the outer surface of the crank body 6, and the positions of the round rod 21 and the slot rod 22 are fixed more tightly and not easy to slide. Two positioning grooves 211 are provided on one side of the slot rod 22, and two positioning sheets 210 are fixedly connected to one side of the round rod 21. The outer surfaces of the two positioning sheets 210 slide on the inner walls of the positioning grooves 211. When the round rod 21 moves, the outer surfaces of the positioning sheets 210 will slide on the inner walls of the positioning grooves 211. By arranging the positioning sheets 210 inside the positioning grooves 211, the mutual angle between the round rod 21 and the slot rod 22 can be further limited, thereby avoiding shaking between the round rod 21 and the slot rod 22 as much as possible.
[0033] Reference Figure 1 , Figure 5 and Figure 6 As shown, in this embodiment: the outer surface of the main journal 4 is provided with an auxiliary device 3, the auxiliary device 3 includes a ring 32, the inner wall size and shape of the ring 32 are adapted to the size and shape of the outer surface of the main journal 4, the outer surface of the main journal 4 is provided with a plurality of through holes 31, the through holes 31 are distributed in a circular shape on the outer surface of the main journal 4, when the crankshaft is used, lubricating oil can be added to the through holes 31 to facilitate lubrication of the main shaft body 1, and then the ring 32 is sleeved on the outer surface of the main journal 4 to cover the through holes 31 to avoid leakage of lubricating oil as much as possible.
[0034] Reference Figure 1 , Figure 5 and Figure 6 As shown, in this embodiment: the outer surface of the main shaft neck 4 is fixedly connected with a positioning strip 34, and the positioning strip 34 protrudes from the outer surface of the main shaft neck 4. When the ring 32 is sleeved on the outer surface of the main shaft neck 4, one side of the ring 32 is fitted on one side of the positioning strip 34. The position of the ring 32 on the outer surface of the main shaft neck 4 can be simply positioned by the positioning strip 34. The two sides of the ring 32 are fixedly connected with convex rings 33, and the convex rings 33 protrude from the two side edges of the ring 32. The ring 32 can be pulled out more conveniently by pinching the convex ring 33 on the outer surface of the ring 32 with your hands, so that the ring 32 can be removed from the outer surface of the main shaft neck 4 to facilitate the addition of lubricating oil to the through hole 31.
[0035] Working principle: When the crank shaft needs to adjust the distance between the two crank bodies 6 to facilitate the connection of the connecting parts, push the round rod 21 to control the protruding rod 23 to slide on the inner wall of the slot 24 to adjust the length of the protruding rod 23 extending or retracting into the slot rod 22, and change the total length of the slot rod 22 and the round rod 21. Then, press the protrusion 27 on the outer surface of the threaded ring 26 with your hand to push the threaded ring 26 to rotate so that the threaded ring 26 moves on the outer surface of the screw rod 25, and press the side with the rubber ring 28 on the outer surface of the crank body 6 at one end of the slot rod 22 to adjust the relative position between the slot rod 22 and the round rod 21. After being fixed, the connecting piece is then clamped on the outer surface of the round rod 21 and the groove rod 22. When the crankshaft is used, lubricating oil can be added to the inside of the main journal 4 at the through hole 31 on the outer surface of the main journal 4, and then the ring 32 is sleeved on the outer surface of the main journal 4 so that one side of the ring 32 is against one side of the positioning strip 34, and the through hole 31 is sealed by the ring 32. When the main shaft body 1 rotates, the mutual angle between the round rod 21 and the groove rod 22 can be further limited by setting the positioning piece 210 inside the positioning groove 211, so as to avoid shaking between the round rod 21 and the groove rod 22 as much as possible.
[0036] The above is only a preferred embodiment of the utility model, and does not limit the utility model in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the utility model without departing from the technical solution of the utility model still belongs to the protection scope of the technical solution of the utility model. In the description of the utility model, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" 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 directly connected, or indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the utility model can be understood by specific circumstances.
Claims
1. A segmented crankshaft, comprising a main shaft body (1), characterized in that: A main journal (4) is provided on one side of the main shaft body (1), a connecting rod (5) is fixedly connected to one side of the main journal (4), a crank body (6) is fixedly connected to one side of the connecting rod (5), an adjustment device (2) is provided on one side of the crank body (6), and the adjustment device (2) comprises a round rod (21) and a groove rod (22), one end of the round rod (21) and the groove rod (22) are respectively fixedly connected to the crank body (6), and one end of the round rod (21) is fixedly connected to a convex rod (23), a plurality of connecting rods (5), a crank body (6) and an adjusting device (2) are arranged on one side of the main journal (4), one end of the protruding rod (23) is fixedly connected to a screw rod (25), the outer surface of the screw rod (25) is threadedly connected to a threaded ring (26), a retaining groove (24) is provided inside the groove rod (22), the outer surface of the protruding rod (23) is slidably connected to the inner wall of the retaining groove (24), and the outer surface of the screw rod (25) slides on the inner wall of the groove rod (22).
2. A segmented crankshaft according to claim 1, characterized in that: One end of the screw rod (25) is fixedly connected to a cylindrical block (29), and the radius of the cylindrical block (29) is greater than the radius of the screw rod (25).
3. A segmented crankshaft according to claim 2, characterized in that: A plurality of protrusions (27) are fixedly connected to the outer surface of the threaded ring (26), and the protrusions (27) are distributed in a circular pattern on the outer surface of the threaded ring (26).
4. A segmented crankshaft according to claim 3, characterized in that: An annular sheet (28) is fixedly connected to one side of the threaded ring (26), and the annular sheet (28) is made of rubber material.
5. A segmented crankshaft according to claim 4, characterized in that: Two positioning grooves (211) are provided on one side of the groove rod (22), and two positioning plates (210) are fixedly connected to one side of the round rod (21), wherein the outer surfaces of the two positioning plates (210) slide on the inner walls of the positioning grooves (211).
6. A segmented crankshaft according to claim 5, characterized in that: The outer surface of the main journal (4) is provided with an auxiliary device (3), the auxiliary device (3) comprising a circular ring (32), the inner wall size and shape of the circular ring (32) being compatible with the outer surface size and shape of the main journal (4), the outer surface of the main journal (4) being provided with a plurality of through holes (31), the through holes (31) being distributed in a circumferential manner on the outer surface of the main journal (4).
7. A segmented crankshaft according to claim 6, characterized in that: A positioning strip (34) is fixedly connected to the outer surface of the main journal (4), and the positioning strip (34) protrudes from the outer surface of the main journal (4).
8. A segmented crankshaft according to claim 7, characterized in that: The two sides of the circular ring (32) are fixedly connected with convex rings (33), and the convex rings (33) protrude from the two side edges of the circular ring (32).