Adjustable crank structure

Abstract

The application discloses an adjustable crank structure, which comprises an adjusting block mounting seat, an eccentric adjusting block connected to the adjusting block mounting seat, a rotating axis of the adjusting block mounting seat being parallel to a center line of the eccentric adjusting block with a spacing formed between the rotating axis and the center line, and a motion characteristic of the structure being changed by adjusting the spacing, a connecting rod rotatably connected to the eccentric adjusting block, the connecting rod being capable of reciprocating under the driving of the eccentric adjusting block, power transmission and motion conversion being realized, a connecting shaft assembly hinged with the connecting rod, the connecting shaft assembly being used for connecting a target force receiving shaft, and two adjusting bolts screwed into specific threaded holes of the adjusting block mounting seat and abutting against specific parts of the eccentric adjusting block. The adjusting bolts are rotated and moved along specific directions on the adjusting block mounting seat, the spacing is adjusted by the two adjusting bolts, and thus flexible adjustment of motion parameters of the crank structure is realized.

Description

Technical Field

[0001] This application relates to an adjustable crank structure, belonging to the technical field of chemical experimental equipment. Background Technology

[0002] With the continuous development of the chemical industry, product types are becoming increasingly diverse, and production processes are becoming more varied. Different chemical reactions have different requirements for reaction conditions (such as temperature distribution and mixing efficiency). In multiphase reaction processes involving extraction towers, it is often necessary to adjust the sliding frequency of the tapping plates inside the tower to improve extraction and mixing efficiency. To meet these different process requirements, chemical equipment needs to have an adjustable structure so that it can be optimized and adjusted according to specific reactions. Adjustable crank structures, as an effective way to achieve equipment structural adjustment, can well meet these diverse process requirements in chemical production. Summary of the Invention

[0003] The purpose of this application is to provide an adjustable crank structure as a way to effectively adjust the equipment structure, which can well meet the diverse process requirements in chemical production.

[0004] The technical problem to be solved in this application is achieved by the following technical solution:

[0005] An adjustable crank structure includes:

[0006] Adjustment block mounting base;

[0007] An eccentric adjusting block is connected to the adjusting block mounting base. The rotation axis of the adjusting block mounting base is parallel to and spaced apart from the center line of the eccentric adjusting block, forming a gap. By adjusting this gap, the motion characteristics of the structure can be changed; for example, changing the amplitude or frequency of the connecting rod's movement.

[0008] The connecting rod is rotatably connected to the eccentric adjusting block, and the connecting rod can reciprocate under the drive of the eccentric adjusting block; thus realizing the transmission of power and the conversion of motion.

[0009] A coupling assembly, wherein the coupling assembly is hinged to the connecting rod, and the coupling assembly is used to connect to the target force shaft;

[0010] Two adjusting bolts are screwed into specific threaded holes on the adjusting block mounting base and abut against specific parts of the eccentric adjusting block. By rotating the adjusting bolts, they move along a specific direction on the adjusting block mounting base. The two adjusting bolts apply forces to the eccentric adjusting block from different directions, jointly adjusting the size of the gap, thereby achieving flexible adjustment of the crank structure's motion parameters (such as stroke, speed, etc.).

[0011] Preferably, the coupling assembly includes:

[0012] The coupling body is provided with a first connecting part, and the first connecting part is provided with a through hole and a mounting groove;

[0013] A positioning sleeve is installed on the through hole, and the positioning sleeve is also connected to the connecting rod. The positioning sleeve, the through hole, and the connecting rod are all clearance-fitted.

[0014] The positioning pin has an internal thread structure, and the positioning pin passes through the positioning sleeve and the through hole, and the positioning pin is clearance-fitted with the positioning sleeve.

[0015] A locking bolt, threaded to the internal thread structure, is used to fix the locating pin to the coupling body.

[0016] Preferably, the coupling body is further provided with a second connecting part, the second connecting part is provided with an external thread structure, and the external thread structure is fixedly connected to the target force shaft.

[0017] Preferably, the adjusting block mounting base has two symmetrically and detachably fixedly connected limiting blocks, and the two limiting blocks together form a sliding groove.

[0018] Preferably, the eccentric adjusting block is symmetrically provided with two sliding joints, and the two sliding joints slide on the two limiting blocks; the eccentric adjusting block slides along the slide groove by means of two adjusting bolts, so as to adjust the spacing.

[0019] Preferably, the eccentric adjusting block is symmetrically provided with abutment portions, the abutment portions are treated with arc surfaces, and the ends of the two adjusting bolts are also treated with arc surfaces, so as to reduce the friction between the adjusting bolts and the abutment portions when the adjusting bolts rotate.

[0020] Preferably, the connecting rod is provided with a bearing mounting part, the bearing mounting part is provided with an end cover, the end cover is provided with a flange, the flange abuts against the outer ring of the bearing, and the eccentric adjusting block is interference-fitted with the inner ring of the bearing.

[0021] Preferably, the adjusting block mounting base is provided with a mounting shaft hole, and a pin passes through the mounting shaft hole and is fixedly connected to the adjusting block mounting base; the mounting shaft hole is used to install a drive shaft.

[0022] Preferably, the drive shaft is provided with a positioning groove, which engages with a pin located in the mounting shaft hole.

[0023] Preferably, the drive shaft is provided with a locking groove, the adjusting block mounting base is provided with a locking threaded hole, and the locking bolt passes through the locking threaded hole and extends to the locking groove to fix the drive shaft to the adjusting block mounting base.

[0024] The beneficial effects of this application are:

[0025] 1. Compared with the prior art, this application utilizes an adjusting block mounting base; an eccentric adjusting block connected to the adjusting block mounting base, wherein the rotation axis of the adjusting block mounting base is parallel and spaced apart from the center line of the eccentric adjusting block, forming a gap. By adjusting this gap, the motion characteristics of the structure can be changed; for example, changing the motion amplitude or frequency of the connecting rod, etc. The connecting rod is rotatably connected to the eccentric adjusting block, and the connecting rod can reciprocate under the drive of the eccentric adjusting block; realizing the transmission of power and the conversion of motion; a connecting shaft assembly, which is hinged to the connecting rod, and the connecting shaft assembly is used to connect the target force shaft; and two adjusting bolts, which are screwed into specific threaded holes on the adjusting block mounting base and abut against specific parts of the eccentric adjusting block. By rotating the adjusting bolts, they move along a specific direction on the adjusting block mounting base. The two adjusting bolts apply forces to the eccentric adjusting block from different directions, jointly adjusting the size of the gap, thereby realizing flexible adjustment of the crank structure motion parameters (such as stroke, speed, etc.). Attached Figure Description

[0026] Figure 1 This is a three-dimensional structural diagram of the present application;

[0027] Figure 2 This is a three-dimensional structural diagram of the adjusting block mounting base of this application;

[0028] Figure 3 This is a schematic diagram of the drive shaft in this application;

[0029] Figure 4 This is a schematic diagram of the connecting rod in this application;

[0030] Figure 5 This is a three-dimensional structural diagram of the eccentric adjustment block in this application;

[0031] Figure 6 This is a schematic diagram of the coupling component in this application;

[0032] Figure 7 This is a schematic diagram of the end cap structure in this application.

[0033] In the diagram: 1. Adjusting block mounting base; 101. Mounting shaft hole; 102. Pin; 103. Locking bolt; 104. Limiting block; 105. Slide groove; 2. Drive shaft; 201. Positioning groove; 202. Locking groove; 3. Eccentric adjusting block; 301. Sliding joint; 302. Abutment joint; 4. Adjusting bolt; 5. Connecting rod; 501. Bearing mounting part; 502. End cover; 503. Flange; 504. Bearing; 505. Hinge joint; 6. Coupling body; 601. First connecting part; 602. Second connecting part; 7. Positioning sleeve; 8. Positioning pin; 9. Locking bolt; 10. Gasket. Detailed Implementation

[0034] To facilitate a clear understanding of the technical means, creative features, objectives, and effects of this application, the following description, in conjunction with specific illustrations, further elaborates on this application.

[0035] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", 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 application and simplifying the description, and do not indicate or imply that the equipment 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 application.

[0036] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0037] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0038] The following disclosure provides numerous different embodiments or examples for implementing various structures of the embodiments of this application. To simplify the disclosure of the embodiments of this application, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or reference letters may be repeated in different examples of the embodiments of this application; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, various specific examples of processes and materials are provided in the embodiments of this application, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0039] like Figure 1-7 As shown, an adjustable crank structure includes an adjusting block mounting base 1, an eccentric adjusting block 3, a connecting rod 5, a connecting shaft assembly, and an adjusting bolt 4.

[0040] Specifically, the adjusting block mounting base 1 is provided with a mounting shaft hole 101, through which a pin 102 passes and is fixedly connected to the adjusting block mounting base 1. The mounting shaft hole 101 is used to install a drive shaft 2. In use, the drive shaft 2 is connected to a drive motor, and it also works with a shaft support. The drive shaft 2 is provided with a positioning groove 201, which engages with the pin 102 located in the mounting shaft hole 101, thereby achieving power transmission. The drive shaft 2 is provided with a locking groove 202, and the adjusting block mounting base 1 is provided with a locking threaded hole. A locking bolt 103 passes through the locking threaded hole and extends to the locking groove 202 to fix the drive shaft 2 to the adjusting block mounting base 1. The positioning groove 201 and the pin 102 enable quick positioning and installation, and the locking bolt 103 further secures the drive shaft 2 to the adjusting mounting base. Two limiting blocks 104 are detachably and fixedly connected to the adjusting block mounting base 1 by screws. The two limiting blocks 104 are symmetrically arranged about the rotation axis of the adjusting block mounting base 1, and together they form a sliding groove 105. Two adjusting threaded holes are symmetrically opened on the adjusting block mounting base 1, and the two adjusting threaded holes are located at both ends of the sliding groove 105. There are two adjusting bolts 4, which are screwed into the adjusting threaded holes on the adjusting block mounting base 1 and abut against the abutment part 302 of the eccentric adjusting block 3. By rotating the two adjusting bolts 4 simultaneously, the eccentric adjusting block 3 moves along the sliding groove 105 on the adjusting block mounting base 1. The two adjusting bolts 4 apply forces to the eccentric adjusting block 3 from different directions, and together adjust the size of the gap, thereby realizing the flexible adjustment of the crank structure motion parameters (such as stroke, speed, etc.).

[0041] The eccentric adjusting block 3 is symmetrically provided with two sliding joints 301. The two sliding joints 301 are slidably connected to the two limiting blocks 104 to ensure that the eccentric adjusting block 3 can slide on the slide groove 105 without falling off. It should be noted that the rotation axis of the adjusting block mounting base 1 is parallel and spaced apart from the center line of the eccentric adjusting block 3, and the gap is greater than zero. By adjusting the gap, the motion characteristics of the structure can be changed; for example, the motion amplitude or frequency of the connecting rod 5 can be changed. The eccentric adjusting block 3 is symmetrically provided with abutment parts 302. Furthermore, the abutment parts 302 are rounded, and the ends of the two adjusting bolts 4 are also rounded, reducing the friction between the adjusting bolts 4 and the abutment parts 302 when the adjusting bolts 4 rotate.

[0042] The connecting rod 5 is provided with a bearing mounting part 501 for mounting a bearing 504. The eccentric adjusting block 3 is interference-fitted with the inner ring of the bearing 504. The bearing mounting part 501 is detachably fixed to an end cover 502 by screws. The end cover 502 is provided with a flange 503, which abuts against the outer ring of the bearing 504, further fixing the bearing 504 to the bearing 504 mounting seat. The connecting rod 5 can reciprocate under the drive of the eccentric adjusting block 3, realizing the transmission of power and the conversion of motion. The other end of the connecting rod 5 is provided with a hinge part 505.

[0043] The coupling assembly includes: a coupling body 6, which has a first connecting portion 601, including a through hole and a mounting groove; and a positioning sleeve 7, which is first installed on the hinge portion 505 of the connecting rod 5. The hinge portion 505 is then inserted into the mounting groove and connected to the two through holes on the first connecting portion 601 via the positioning sleeve 7. The positioning sleeve 7 is clearance-fitted with both the through holes and the hinge portion 505 of the connecting rod 5. During operation, the coupling assembly typically needs to accommodate a certain degree of axial and radial displacement and angular deviation. The clearance fit allows for slight relative movement between the positioning sleeve 7 and the connecting rod 5, helping the coupling assembly to better compensate for these displacements and deviations and ensuring smooth power transmission. For example, when the two shafts connected by the coupling assembly experience slight axial expansion and contraction, the clearance between the positioning sleeve 7 and the connecting rod 5 provides some room for this expansion and contraction, preventing additional stress caused by an overly tight fit. A locating pin 8, with an internal thread structure, passes through the locating sleeve 7 and the through hole, and the locating pin 8 and the locating sleeve 7 are clearance-fitted. A locking bolt 9 is threaded to the internal thread structure, and a washer 10 is installed between the locking bolt 9 and the locating pin 8. The locking bolt 9 is used to fix the locating pin 8 to the coupling body 6. The coupling body 6 is also provided with a second connecting part 602, which has an external thread structure. The external thread structure is fixedly connected to the target force-bearing shaft. The rotational motion of the transmission shaft 2 is converted into the axial motion of the force-bearing shaft through the adjusting block mounting seat 1, the eccentric adjusting block 3, the connecting rod 5, and the coupling assembly.

[0044] The foregoing has shown and described the basic principles, main features, and advantages of this application. Those skilled in the art should understand that this application is not limited to the above embodiments, and various changes and modifications can be made without departing from the spirit and scope of this application; all such changes and modifications fall within the scope of the claims. The scope of protection of this application is defined by the appended claims and their equivalents.

Claims

1. An adjustable crank structure, characterized in that, include: Adjustment block mounting base; An eccentric adjustment block is connected to the adjustment block mounting base. The rotation axis of the adjustment block mounting base is parallel to and spaced apart from the center line of the eccentric adjustment block, forming a gap. By adjusting this gap, the motion characteristics of the structure can be changed. The connecting rod is rotatably connected to the eccentric adjusting block and can reciprocate under the drive of the eccentric adjusting block; A coupling assembly, which is hinged to the connecting rod, is used to connect to the target force shaft; Two adjusting bolts are screwed into specific threaded holes on the adjusting block mounting base and abut against specific parts of the eccentric adjusting block. By rotating the adjusting bolts, they move along a specific direction on the adjusting block mounting base. The two adjusting bolts apply force to the eccentric adjusting block from different directions, jointly adjusting the size of the gap, thereby realizing flexible adjustment of the crank structure motion parameters.

2. The adjustable crank structure according to claim 1, characterized in that: The coupling assembly includes: The coupling body is provided with a first connecting part, and the first connecting part is provided with a through hole and a mounting groove; A positioning sleeve is installed on the through hole and is also connected to the connecting rod. The positioning sleeve, the through hole, and the connecting rod are all clearance-fitted. During the operation of the coupling assembly, it is usually necessary to adapt to a certain degree of axial and radial displacement and angular deviation. The clearance fit allows for a small relative movement between the positioning sleeve and the connecting rod, which helps the coupling assembly to better compensate for these displacements and deviations and ensure the smoothness of power transmission. The positioning pin has an internal thread structure, and the positioning pin passes through the positioning sleeve and the through hole, and the positioning pin is clearance-fitted with the positioning sleeve. A locking bolt, threaded to the internal thread structure, is used to fix the locating pin to the coupling body.

3. The adjustable crank structure according to claim 2, characterized in that: The coupling body is further provided with a second connecting part, the second connecting part is provided with an external thread structure, and the external thread structure is fixedly connected to the target force shaft.

4. The adjustable crank structure according to claim 3, characterized in that: The adjusting block mounting base has two symmetrically and detachably fixedly connected limit blocks, which together form a sliding groove.

5. The adjustable crank structure according to claim 4, characterized in that: The eccentric adjustment block is symmetrically provided with two sliding joints, which slide against the two limiting blocks; the eccentric adjustment block slides along the groove by means of two adjusting bolts to adjust the spacing.

6. An adjustable crank structure according to claim 1 or 5, characterized in that: The eccentric adjusting block is symmetrically provided with abutment parts, which are treated with arc surfaces. The ends of the two adjusting bolts are also treated with arc surfaces to reduce the friction between the adjusting bolts and the abutment parts when the adjusting bolts rotate.

7. The adjustable crank structure according to claim 6, characterized in that: The connecting rod is provided with a bearing mounting part, the bearing mounting part is provided with an end cover, the end cover is provided with a flange, the flange abuts against the outer ring of the bearing, and the eccentric adjusting block is interference-fitted with the inner ring of the bearing.

8. The adjustable crank structure according to claim 7, characterized in that: The adjusting block mounting base is provided with a mounting shaft hole, and a pin passes through the mounting shaft hole and is fixedly connected to the adjusting block mounting base; the mounting shaft hole is used to install the drive shaft.

9. An adjustable crank structure according to claim 8, characterized in that: The drive shaft is provided with a positioning groove, which engages with a pin located in the mounting shaft hole.

10. An adjustable crank structure according to claim 9, characterized in that: The drive shaft is provided with a locking groove, and the adjusting block mounting base is provided with a locking threaded hole. The locking bolt passes through the locking threaded hole and extends to the locking groove to fix the drive shaft to the adjusting block mounting base.

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