High-precision rotating shaft structure with adjustable crank fit clearance

Abstract

The utility model relates to the technical field of mechanical transmission, in particular to a high-precision rotating shaft structure with an adjustable crank fit clearance, which comprises a bottom plate and a long plate, the front part of the upper end of the bottom plate is fixedly connected with two support plates, the two support plates are distributed in bilateral symmetry, and the right end of the support plate on the right side is fixedly connected with a main body mechanism; sliding grooves are formed in the front end and the rear end of the long plate; the main body mechanism comprises a driving motor, the output end of the driving motor penetrates through the supporting plate and is fixedly connected with a worm, the rear portion of the outer surface of the worm is connected with a turbine in an engaged mode, the opposite end faces of the two sliding blocks are fixedly connected with a rotating shaft, and the driving motor is fixedly connected to the right end of the supporting plate. According to the high-precision rotating shaft structure with the adjustable crank fit clearance, high-precision rotation is achieved through accurate meshing of multiple stages of gears, flexible adjustment of the crank fit clearance is achieved through cooperation of the sliding blocks and the sliding grooves, and the working stability and working condition applicability of the rotating shaft structure are effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of mechanical transmission technology, and in particular to a high-precision rotating shaft structure with adjustable crank clearance. Background Technology

[0002] In the field of mechanical transmission, shafts are key components and are widely used in various mechanical equipment, such as automated production lines, precision machining equipment, and aerospace machinery. As modern industry develops towards high precision and intelligence, higher requirements are placed on the accuracy, stability, and adaptability of shafts. In actual work, the use of crank mechanisms and shafts is extremely common, and their fit clearance directly affects the operating accuracy, reliability, and service life of the equipment. Traditional shaft structures usually adopt a fixed fit clearance design, which makes it difficult to flexibly adjust according to different working conditions and work requirements. Therefore, we have introduced a high-precision shaft structure with adjustable crank fit clearance. Utility Model Content

[0003] The main purpose of this invention is to provide a high-precision rotating shaft structure with adjustable crank clearance, which can effectively solve the problems in the background art.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] A high-precision rotating shaft structure with adjustable crank clearance includes a base plate and a long plate. Two support plates are fixedly connected to the upper front part of the base plate, and the two support plates are symmetrically distributed on the left and right. The main body mechanism is fixedly connected to the right end of the right support plate. Sliding grooves are opened at both the front and rear ends of the long plate.

[0006] The main structure includes a drive motor. The output end of the drive motor passes through a support plate and is fixedly connected to a worm gear. A turbine is meshed with the rear part of the outer surface of the worm gear. A first rotating rod is inserted and fixedly connected to the middle of the upper end of the turbine. A first gear is fixedly connected to the upper part of the outer surface of the first rotating rod. A first crank is fixedly connected to both the upper part and the middle part of the outer surface of the first rotating rod. A second gear and a third gear are meshed with the left and right parts of the outer surface of the first gear, respectively. A fifth gear and a fourth gear are meshed with the left and right parts of the outer surface of the second gear and the third gear, respectively. A second rotating rod is inserted and fixedly connected to the middle of the upper end of the second gear, the upper end of the fifth gear, the middle of the upper end of the third gear, and the middle of the upper end of the fourth gear. A second crank is sleeved on the outer surface of the two second rotating rods on the left side. A third crank is sleeved on the outer surface of the two second rotating rods on the right side. A slider is fixedly connected to the upper end of the second rotating rod on the left side and the upper end of the second rotating rod on the right side. A rotating shaft is fixedly connected to the opposite end faces of the two sliders. The drive motor is fixedly connected to the right end of the support plate.

[0007] Preferably, the second gear is located to the left front of the first gear and meshes with the left outer surface of the first gear, and the tooth profile of the first gear is adapted to the meshing of the second and third gears.

[0008] Preferably, the third gear is located to the right rear of the first gear and meshes with the outer right surface of the first gear.

[0009] Preferably, the fifth gear is located to the left rear of the second gear and meshes with the left outer surface of the second gear.

[0010] Preferably, the fourth gear is located to the right front of the third gear and meshes with the outer right surface of the third gear.

[0011] Preferably, both sliders are slidably connected within the long plate, and the left end of the worm gear is movably mounted on the right end of the left-side support plate via a bearing.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. This utility model achieves high-precision operation through a multi-stage gear precision transmission design: the meshing transmission of the worm and the turbine forms a first-stage reduction and torque amplification, stably transmitting the power of the drive motor to the first rotating shaft. Subsequently, the multi-stage meshing between the first gear and the second, third, fifth, and fourth gears, through a precise tooth profile adaptation design, ensures that there is no freewheeling or slippage during power transmission, with minimal error. This precise gear transmission mechanism, combined with the tight assembly process between various components, enables the rotating shaft to maintain high stability during rotation, accurately control the motion trajectory and speed, meet the high precision requirements of modern industry, and effectively improve the processing accuracy of equipment and product quality.

[0014] 2. In this utility model, after the drive motor is started, the power drives the second rotating rod to rotate through gear transmission. The slider fixed at the upper end of the second rotating rod slides linearly in the groove of the long plate, thereby changing the position of the rotating shaft and realizing the dynamic adjustment of the crank fit clearance. This design can flexibly adjust the clearance according to the actual working conditions. It can reduce the clearance to improve the transmission efficiency under light load conditions, and appropriately increase the clearance to avoid excessive wear of components under heavy load conditions, which significantly enhances the working condition adaptability and reliability of the rotating shaft structure. Attached Figure Description

[0015] Figure 1 This is a first-view structural diagram of the high-precision rotating shaft structure with adjustable crank-machine clearance of this utility model.

[0016] Figure 2 This is a first-view structural diagram of the high-precision rotating shaft structure with adjustable crank-machine clearance of this utility model.

[0017] Figure 3 This is a schematic diagram of the main structure of the high-precision rotating shaft structure with adjustable crank-to-shaft clearance of this utility model;

[0018] Figure 4 This is a detailed enlarged schematic diagram of point A of the high-precision rotating shaft structure with adjustable crank-machine clearance of this utility model.

[0019] In the diagram: 1. Base plate; 2. Support plate; 3. Main body mechanism; 4. Long plate; 5. Slide groove; 31. Drive motor; 32. Worm gear; 33. Turbine; 34. First rotating rod; 35. First gear; 36. First crank; 37. Second gear; 38. Third gear; 39. Fourth gear; 310. Fifth gear; 311. Second crank; 312. Third crank; 313. Slider; 314. Rotating shaft; 315. Second rotating rod. Detailed Implementation

[0020] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0021] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" 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 an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] Please see Figure 1-4 This utility model provides a technical solution:

[0024] The high-precision rotating shaft structure with adjustable crank clearance includes a base plate 1 and a long plate 4. Two support plates 2 are fixedly connected to the upper front part of the base plate 1, and the two support plates 2 are symmetrically distributed on the left and right. The main body mechanism 3 is fixedly connected to the right end of the right support plate 2. The front and rear ends of the long plate 4 are both provided with sliding grooves 5.

[0025] In this embodiment, the main body mechanism 3 includes a drive motor 31. The output end of the drive motor 31 passes through the support plate 2 and is fixedly connected to a worm gear 32. A turbine 33 is meshed with the rear part of the outer surface of the worm gear 32. A first rotating rod 34 is inserted and fixedly connected to the middle part of the upper end of the turbine 33. A first gear 35 is fixedly connected to the upper part of the outer surface of the first rotating rod 34. A first crank 36 is fixedly connected to both the upper part and the middle part of the outer surface of the first rotating rod 34. A second gear 37 and a third gear 38 are respectively meshed with the left and right parts of the outer surface of the first gear 35. A fifth gear 310 and a fourth gear 39 are respectively meshed with the left part of the outer surface of the second gear 37 and the right part of the outer surface of the third gear 38. A second rotating rod 315 is inserted and fixedly connected to the middle part of the upper end of the second gear 37, the upper end of the fifth gear 310, the middle part of the upper end of the third gear 38, and the middle part of the upper end of the fourth gear 39. The outer surfaces of the two second rotating rods 315 on the left side are jointly sleeved with a second crank 311. The two second rotating rods 315 on the right side are respectively... The outer surfaces of the two rotating rods 315 are jointly fitted with the third crank 312. The upper ends of the second rotating rod 315 on the left and the second rotating rod 315 on the right are both fixedly connected to sliders 313. The opposite end faces of the two sliders 313 are fixedly connected to the rotating shaft 314. The drive motor 31 is fixedly connected to the right end of the support plate 2. The second gear 37 is located to the left front of the first gear 35 and meshes with the left outer surface of the first gear 35. The tooth profiles of the first gear 35, the second gear 37, and the third gear 38 are matched. The third gear 38 is located to the right rear of the first gear 35 and meshes with the right outer surface of the first gear 35. The fifth gear 310 is located to the left rear of the second gear 37 and meshes with the left outer surface of the second gear 37. The fourth gear 39 is located to the right front of the third gear 38 and meshes with the right outer surface of the third gear 38. The two sliders 313 are slidably connected inside the long plate 4. The left end of the worm gear 32 is movably mounted on the right end of the left support plate 2 through a bearing.

[0026] Through the above scheme: after the drive motor 31 starts, its output end drives the worm gear 32 to rotate. The worm gear 32 meshes with the worm 33 to transmit power to the first rotating rod 34, causing the first gear 35 and the first crank 36 on the first rotating rod 34 to rotate. The first gear 35, through meshing with the second gear 37 and the third gear 38, further transmits power to the fifth gear 310 and the fourth gear 39, driving the second rotating rod 315 to rotate, thereby causing the second crank 311 and the third crank 312 to move, and driving the slider 313 connected to the second rotating rod 315 to slide in the groove 5 of the long plate 4, realizing the adjustment of the position of the rotating shaft 314 and the adjustment of the crank engagement clearance. This structure utilizes multi-stage gear transmission, combined with the sliding engagement of the slider 313 and the groove 5. On the one hand, the precise meshing of the gears ensures the high-precision rotation of the rotating shaft 314. On the other hand, the crank engagement clearance can be flexibly adjusted to adapt to different working conditions, effectively improving the working stability and applicability of the rotating shaft structure.

[0027] It should be noted that this utility model is a high-precision rotating shaft structure with adjustable crank clearance. During use, the drive motor 31 fixed to the right end of the right support plate 2 is started first. The output end of the drive motor 31 passes through the support plate 2 and drives the worm gear 32 fixedly connected to it to rotate. The left end of the worm gear 32 is movably mounted on the right end of the left support plate 2 through a bearing, ensuring the stable rotation of the worm gear 32. The first gear 35 fixedly connected to the upper part of the outer surface of the first rotating rod 34, and the first crank 36 fixedly connected to both the upper part and the middle part of the outer surface, all rotate with the first rotating rod 34. Rotating synchronously, the first gear 35 meshes with the second gear 37 located to its left front and the third gear 38 located to its right rear. Since the tooth profiles of the first gear 35, the second gear 37, and the third gear 38 are compatible, the rotation of the first gear 35 drives the rotation of the second gear 37 and the third gear 38. The second gear 37 then meshes with the fifth gear 310 located to its left rear, and the third gear 38 meshes with the fourth gear 39 located to its right front. Thus, the rotation of the second gear 37 and the third gear 38 is further transmitted, causing the fifth gear 310 and the fourth gear 39 to rotate. Gear 39 also begins to rotate. Because the upper middle parts of the second gear 37, fifth gear 310, third gear 38, and fourth gear 39 are all fixedly connected to second rotating rods 315, these second rotating rods 315 rotate synchronously under the drive of their corresponding gears. The second crank 311, which is sleeved on the outer surfaces of the two second rotating rods 315 on the left, and the third crank 312, which is sleeved on the outer surfaces of the two second rotating rods 315 on the right, will move accordingly with the rotation of the second rotating rods 315. Simultaneously, the upper end of the second rotating rod 315 on the left and the second rotating rod 315 on the right... The upper end of the second rotating rod 315 is fixedly connected to the slider 313. Since the slider 313 is slidably connected in the groove 5 in the long plate 4, the rotation of the second rotating rod 315 will drive the slider 313 to slide in the groove 5. The rotating shaft 314, which is fixedly connected to the opposite end face of the two sliders 313, will also adjust its position as the position of the slider 313 in the groove 5 changes. In this way, the crank engagement clearance is adjusted. In the whole power transmission process, the precise meshing of each gear and the tight cooperation between each component ensure that the rotating shaft 314 can achieve high-precision rotation.

[0028] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A high-precision rotating shaft structure with adjustable crank fitting clearance, comprising a bottom plate (1) and a long plate (4), characterized in that: The upper end of the bottom plate (1) is fixedly connected with two support plates (2), and the two support plates (2) are symmetrically distributed, the right end of the right support plate (2) is fixedly connected with a main body mechanism (3), and the front end and the rear end of the long plate (4) are both provided with a sliding groove (5). The main body mechanism (3) comprises a driving motor (31), the output end of the driving motor (31) penetrates through the support plate (2) and is fixedly connected with a worm (32), the outer surface of the worm (32) is meshed with a turbine (33) at the rear end, the upper end of the turbine (33) is fixedly connected with a first rotating rod (34), the outer surface of the first rotating rod (34) is fixedly connected with a first gear (35) at the upper end, the outer surface of the first rotating rod (34) is fixedly connected with a first crank (36) at the upper end and the middle, the outer surface of the first gear (35) is meshed with a second gear (37) and a third gear (38) at the left and right sides respectively, the outer surface of the second gear (37) is meshed with a fifth gear (310) and a fourth gear (39) at the left and right sides respectively, the upper end of the second gear (37), the upper end of the fifth gear (310), the upper end of the third gear (38) and the upper end of the fourth gear (39) are all fixedly connected with a second rotating rod (315), the outer surfaces of the two second rotating rods (315) on the left side are jointly sleeved with a second crank (311), the outer surfaces of the two second rotating rods (315) on the right side are jointly sleeved with a third crank (312), the upper end of the second rotating rod (315) on the left side and the upper end of the second rotating rod (315) on the right side are both fixedly connected with a sliding block (313), the opposite end faces of the two sliding blocks (313) are fixedly connected with a rotating shaft (314), and the driving motor (31) is fixedly connected to the right end of the support plate (2).

2. The high-precision rotating shaft structure with adjustable crank-fitting clearance according to claim 1, characterized in that: The second gear (37) is located in front of the left side of the first gear (35) and is meshed with the left side of the first gear (35), and the tooth shapes of the first gear (35) and the second gear (37) and the third gear (38) are matched.

3. The high-precision rotating shaft structure with adjustable crank-fitting gap according to claim 1, characterized in that: The third gear (38) is located in the rear of the right side of the first gear (35) and is meshed with the right side of the first gear (35).

4. The high-precision rotating shaft structure with adjustable crank-fitting gap according to claim 1, characterized in that: The fifth gear (310) is located in the rear of the left side of the second gear (37) and is meshed with the left side of the second gear (37).

5. The high-precision rotating shaft structure with adjustable crank-fitting gap according to claim 1, characterized in that: The fourth gear (39) is located in front of the right side of the third gear (38) and is meshed with the right side of the third gear (38).

6. The high-precision rotating shaft structure with adjustable crank-fitting gap according to claim 1, characterized in that: The two sliding blocks (313) are both slidingly connected in the long plate (4), and the left end of the worm (32) is movably mounted on the right end of the left support plate (2) through a bearing.

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