An adjustable coupling

Abstract

The utility model provides an adjustable coupling, including an upper coupling and a lower coupling, wherein a driving shaft hole is provided at the center of the upper coupling for connecting the output shaft of the driving component; a load shaft hole is provided at the center of the lower coupling for connecting the driving shaft of the load; a plurality of upper connecting holes are evenly provided on the flange end face of the upper coupling along the circumference, and a plurality of lower connecting holes matching the upper connecting holes are evenly provided on the flange end face of the lower coupling along the circumference, and the upper coupling and the lower coupling are detachably connected by screws. When the coupling of the utility model is used to connect an actuator and a load, even if the docking angles of the output shaft of the actuator and the driving shaft of the load are inconsistent, the influence of the inconsistent angles can be eliminated by adjusting the docking angles of the upper coupling and the lower coupling, thereby ensuring that the actuator and the load can be connected normally.

Description

Technical Field

[0001] The present application relates to the technical field of couplings, and in particular to an adjustable coupling. Background Art

[0002] A coupling is a mechanical component used to firmly connect the driving shaft and the driven shaft in different mechanisms so that they can rotate together and transmit motion and torque.

[0003] There are many types of valves or other loads in current industrial automation sites, and the output shaft (i.e. active shaft) and load drive shaft (i.e. driven shaft) are of different types, including square shafts and cylindrical shafts with flat keys. When replacing actuators from different manufacturers, due to different reference standards, the actuator and valve or other load cannot be connected due to inconsistent docking angles between the active shaft and the driven shaft. Summary of the invention

[0004] The present application provides an adjustable coupling, which solves the problem that when replacing actuators from different manufacturers, the actuator and the load cannot be connected due to the inconsistent docking angles between the driving shaft and the driven shaft.

[0005] The present application provides an adjustable coupling, comprising an upper coupling and a lower coupling, wherein a drive shaft hole is provided at the center of the upper coupling for connecting the output shaft of a driving component; a load shaft hole is provided at the center of the lower coupling for connecting the drive shaft of a load; a plurality of upper connecting holes are uniformly provided on the flange end face of the upper coupling along the circumferential direction, and a plurality of lower connecting holes matching the upper connecting holes are uniformly provided on the flange end face of the lower coupling along the circumferential direction, and the upper coupling and the lower coupling are detachably connected by screws.

[0006] In the technical solution provided in the present application, a plurality of upper connecting holes are opened on the flange end face of the upper coupling, and a plurality of lower connecting holes are opened on the flange end face of the lower coupling, and the upper connecting holes and the lower connecting holes are connected and fixed by screws. On the one hand, it is convenient to replace the upper coupling or the lower coupling with shaft holes of different types and specifications according to actual needs; on the other hand, when connecting the actuator and the load, even if the docking angle between the output shaft of the actuator and the driving shaft of the load is inconsistent, the influence of the angle inconsistency can be eliminated by adjusting the docking angle between the upper coupling and the lower coupling, thereby ensuring that the actuator and the load can be connected normally.

[0007] In some embodiments, the number of the upper connecting holes and the number of the lower connecting holes are not less than 4. The more the number of the upper connecting holes and the lower connecting holes is, the higher the accuracy of the coupling angle adjustment is and the wider the scope of application is.

[0008] In some embodiments, the drive shaft hole is a square shaft hole or a circular shaft hole with a keyway, which can be used to connect an actuator whose output shaft is a square shaft or a circular shaft with a flat key.

[0009] In certain embodiments, the load shaft hole is a square shaft hole or a circular shaft hole with a keyway, which can be used to connect a load whose drive shaft is a square shaft or a circular shaft with a flat key.

[0010] In some embodiments, the flange end face of the upper coupling is provided with a plurality of key slots, the number and positions of the key slots correspond to the number and positions of the upper connecting holes, and the key slots are located between the upper connecting hole and the drive shaft hole; the flange end face of the lower coupling is provided with a flat key matching the key slot, and the flat key is located between the lower connecting hole and the load shaft hole, and the position of the flat key corresponds to the positions of the plurality of key slots; by arranging key slots and flat keys on the flange end faces of the upper coupling and the lower coupling, on the one hand, it is convenient to position the upper connecting hole and the lower connecting hole when adjusting the docking angle of the upper coupling and the lower coupling, thereby improving the docking positioning efficiency; on the other hand, the cooperation of the flat key and the key slot can transmit torque, share the torque borne by the screw, and thus extend the service life of the screw.

[0011] In some embodiments, the four corners of the flat key are chamfered to facilitate the flat key to enter and exit the key slot.

[0012] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The drawings in this application are used to illustrate preferred embodiments, so that those skilled in the art can clearly understand various other advantages and benefits, and should not be considered as limitations of this application. In addition, the same reference numerals are used throughout the drawings to represent the same or similar components.

[0014] Figure 1 A three-dimensional diagram of an adjustable coupling for this application;

[0015] Figure 2 An exploded schematic diagram of an adjustable coupling for the present application;

[0016] Figure 3 This is a schematic diagram of the flange end surface structure of the upper coupling in one embodiment of the present application;

[0017] Figure 4 This is a schematic diagram of the flange end surface structure of the lower coupling in one embodiment of the present application;

[0018] Icons: 1. Upper coupling; 2. Lower coupling; 3. Drive shaft hole; 4. Load shaft hole; 5. Upper connecting hole; 6. Lower connecting hole; 7. Screw; 8. Keyway; 9. Flat key. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with specific embodiments. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0020] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0021] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two (including two), unless otherwise clearly and specifically defined.

[0022] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, indicating that there may be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0023] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the embodiments of the present application.

[0024] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like 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 a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0025] See also Figure 1 , Figure 2 The embodiment of the present application provides an adjustable coupling, including an upper coupling 1 and a lower coupling 2, wherein a drive shaft hole 3 is provided at the center of the upper coupling 1 for connecting the output shaft of a driving component (such as an actuator, etc.); a load shaft hole 4 is provided at the center of the lower coupling 2 for connecting the drive shaft of a load (such as a valve, etc.); a plurality of upper connecting holes 5 are uniformly provided on the flange end surface of the upper coupling 1 along the circumferential direction, and a plurality of lower connecting holes 6 matching the upper connecting holes 5 are uniformly provided on the flange end surface of the lower coupling 2 along the circumferential direction, and the upper coupling 1 and the lower coupling 2 are detachably connected by screws 7.

[0026] In the technical solution provided in the present application, a plurality of upper connecting holes 5 are opened on the flange end face of the upper coupling 1, and a plurality of lower connecting holes 6 are opened on the flange end face of the lower coupling 2, and the upper connecting holes 5 and the lower connecting holes 6 are connected and fixed by screws 7. On the one hand, it is convenient to replace the upper coupling 1 or the lower coupling 2 with shaft holes of different types and specifications according to actual needs; on the other hand, when connecting the actuator and the load, even if the docking angle of the output shaft of the actuator is inconsistent with the driving shaft of the load, the influence of the angle inconsistency can be eliminated by adjusting the docking angle between the upper coupling 1 and the lower coupling 2, thereby ensuring that the actuator and the load can be connected normally.

[0027] In some embodiments, the number of the upper connecting holes 5 and the number of the lower connecting holes 6 are not less than 4. The more the number of the upper connecting holes 5 and the lower connecting holes 6 is, the higher the accuracy of the coupling angle adjustment is and the wider the scope of application is.

[0028] In a specific implementation process, the number of the upper connection holes 5 and the lower connection holes 6 can be 18, and the adjustment precision of the docking angle of the upper coupling 1 and the lower coupling 2 is 360° / 18=20°, that is, the docking angle of the coupling can be adjusted to an integer multiple of 20°. If the number of the upper connection holes 5 and the lower connection holes 6 is 24, the adjustment precision of the docking angle of the upper coupling 1 and the lower coupling 2 is 360° / 24=15°, that is, the docking angle of the coupling can be adjusted to an integer multiple of 15°.

[0029] Of course, in the specific implementation process, the number of upper connecting holes 5 and the number of lower connecting holes 6 do not have to be equal. It is sufficient that the number of upper connecting holes 5 is an integer multiple of the number of lower connecting holes 6 (and vice versa). However, in order to ensure the firmness of the coupling connection, the number of bolts is generally not less than 4. Therefore, the number of upper connecting holes 5 and the number of lower connecting holes 6 are generally not less than 4.

[0030] Please continue reading Figure 1 , Figure 2 In some embodiments, the drive shaft hole 3 is a square shaft hole or a circular shaft hole with a keyway, which can be used to connect an actuator whose output shaft is a square shaft or a circular shaft with a flat key; the drive shaft hole 3 in this embodiment is a square shaft hole.

[0031] Please continue reading Figure 1 , Figure 2 In some embodiments, the load shaft hole 4 is a square shaft hole or a circular shaft hole with a keyway, which can be used to connect a load (such as a valve, etc.) whose driving shaft is a square shaft or a circular shaft with a flat key; the load shaft hole 4 in this embodiment is a circular shaft hole with a keyway.

[0032] Please continue reading Figure 3 , Figure 4 In some embodiments, the flange end face of the upper coupling 1 is provided with a plurality of key slots 8, the number and position of the key slots 8 correspond to the number and position of the upper connecting hole 5 (in this embodiment, 18 key slots 8 are provided), and the key slots 8 are located between the upper connecting hole 5 and the drive shaft hole 3; the flange end face of the lower coupling 2 is provided with a flat key 9 matching the key slot 8 (the flat key 9 and the flange end face of the lower coupling 2 are integrally formed, and the number of the flat keys 9 is 2, which are symmetrically arranged on both sides of the load shaft hole 4), the The flat key 9 is located between the lower connecting hole 6 and the load shaft hole 4, and the position of the flat key 9 corresponds to the position of the plurality of key slots 8; by arranging the key slots 8 and the flat key 9 on the flange end faces of the upper coupling 1 and the lower coupling 2, on the one hand, it is convenient to position the upper connecting hole 5 and the lower connecting hole 6 when adjusting the docking angle of the upper coupling 1 and the lower coupling 2, thereby improving the docking positioning efficiency; on the other hand, the cooperation of the flat key 9 and the key slot 8 can transmit torque, share the torque borne by the screw 7, and thus extend the service life of the screw 7.

[0033] Please continue reading Figure 4 Furthermore, the four corners of the flat key 9 are chamfered structures to facilitate the flat key 9 to enter and exit the key slot 8; the chamfered structure can be a rounded corner or a chamfered right angle.

[0034] In this embodiment, the installation process of the coupling is as follows:

[0035] First, insert the output shaft of the actuator into the drive shaft hole 3 of the upper coupling 1, and then insert the drive shaft of the load into the load shaft hole 4 of the lower coupling 2. Then, align the flange end faces of the upper coupling 1 and the lower coupling 2, align the upper connecting hole 5 with the lower connecting hole 6, and ensure that the flat key 9 is completely embedded in the keyway 8; finally, fix the flange connection of the upper coupling 1 and the lower coupling 2 with the screws 7.

[0036] When replacing an actuator from a different manufacturer, first, remove the output shaft of the original actuator from the drive shaft hole 3 of the upper coupling 1; if the output shaft of the new actuator does not match the docking direction of the drive shaft hole 3 of the upper coupling 1 (a certain angle must be selected for insertion), first remove the connecting screws 7 on the coupling, rotate the upper coupling 1 axially by a corresponding angle, so that the output shaft of the new actuator matches the docking direction of the drive shaft hole 3, then insert the output shaft of the new actuator into the drive shaft hole 3, and finally fix the flange connection of the upper coupling 1 and the lower coupling 2 with screws 7.

[0037] Likewise, when the load needs to be replaced, the operation method is similar to the above steps.

[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, a person of ordinary skill in the art should understand that the technical solutions described in the aforementioned embodiments can still be modified, or some or all of the technical features therein can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no contradiction or conflict, the various technical features mentioned in the embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. An adjustable coupling, characterized in that: The invention comprises an upper coupling (1) and a lower coupling (2), wherein a driving shaft hole (3) is provided at the center of the upper coupling (1) for connecting the output shaft of a driving component; a load shaft hole (4) is provided at the center of the lower coupling (2) for connecting the driving shaft of a load; a plurality of upper connecting holes (5) are uniformly provided on the flange end surface of the upper coupling (1) along the circumference, and a plurality of lower connecting holes (6) matching the upper connecting holes (5) are uniformly provided on the flange end surface of the lower coupling (2) along the circumference; the upper coupling (1) and the lower coupling (2) are detachably connected by means of screws (7); The flange end surface of the upper coupling (1) is provided with a plurality of key slots (8), the number and position of the key slots (8) correspond to the number and position of the upper connecting hole (5), and the key slots (8) are located between the upper connecting hole (5) and the drive shaft hole (3); the flange end surface of the lower coupling (2) is provided with a flat key (9) matching the key slot (8), the flat key (9) is located between the lower connecting hole (6) and the load shaft hole (4), and the position of the flat key (9) corresponds to the position of the plurality of key slots (8).

2. An adjustable coupling according to claim 1, characterized in that: The number of the upper connection holes (5) and the number of the lower connection holes (6) are no less than 4.

3. The adjustable coupling according to claim 1, characterized in that: The driving shaft hole (3) is a square shaft hole or a circular shaft hole.

4. The adjustable coupling according to claim 1, characterized in that: The load shaft hole (4) is a square shaft hole or a circular shaft hole.

5. The adjustable coupling according to claim 1, characterized in that: The four corners of the flat key (9) are chamfered structures.

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