Flexible transmission mechanism

Abstract

The flexible transmission mechanism belongs to the field of transmission mechanisms, and includes: an input connector for connecting a driving device; an output connector for connecting a load device; a plurality of retaining frames arranged at a certain interval between the input connector and the output connector; a plurality of core ropes, the two ends of which are respectively connected to the input connector and the output connector, and the main body of each core rope is connected in series with a plurality of retaining frames; a plurality of elastic members, and the input connector and the adjacent retaining frame, the output connector and the adjacent retaining frame, and the adjacent retaining frames are all connected by at least one elastic member. The flexible transmission mechanism realizes flexible transmission from the input connector to the output connector, reduces the coaxiality requirements and processing accuracy requirements for the input connector and the output connector, and can realize long-distance transmission by increasing the number of retaining frames. The overall structure is simple and compact, and a larger load range can be achieved.

Description

Technical Field

[0001] The present application relates to the field of transmission mechanisms, and in particular to a flexible transmission mechanism. Background Art

[0002] In the field of mechanical transmission, rigid couplings are traditionally widely used as key components to connect drive devices (such as motors) with output shafts. This connection method directly connects the power shaft and the output shaft through a rigid coupling, achieving effective power transmission. Although rigid couplings have excellent transmission effects and can ensure efficient and stable power transmission, their inherent limitations are gradually exposed in actual applications, which are specifically reflected in the following aspects:

[0003] 1. High requirements for machining accuracy. When the rigid coupling connects the power shaft and the output shaft, the coaxiality, parallelism and other geometric accuracy between the two are required to reach extremely high standards. This is because any slight deviation may cause vibration, noise or even damage during the transmission process. Therefore, in order to ensure the stability and reliability of the transmission, the power shaft, output shaft and the rigid coupling itself must be processed and assembled with high precision, which undoubtedly increases the manufacturing cost and processing difficulty.

[0004] 2. Limited transmission distance: Due to the design principle and structural characteristics of the rigid coupling, its effective transmission distance is relatively short. In situations where long-distance transmission is required, if a rigid coupling is still used, the transmission efficiency and accuracy may be reduced or even the transmission may fail due to the long transmission distance. In addition, long-distance transmission may also aggravate the relative displacement and deformation between the power shaft and the output shaft, further affecting the stability and reliability of the transmission.

[0005] Therefore, how to reduce the requirements for processing accuracy and expand the transmission distance while ensuring the transmission effect has become an important research direction in the field of mechanical transmission. Summary of the invention

[0006] In view of this, the purpose of the present application is to provide a flexible transmission mechanism to solve at least one of the above technical problems.

[0007] The present application provides a flexible transmission mechanism, comprising: an input connector for connecting a driving device; an output connector for connecting a load device; a plurality of retaining frames arranged at a certain interval between the input connector and the output connector; a plurality of core ropes, the two ends of each core rope being respectively connected to the input connector and the output connector, the main body of each core rope being connected in series with the plurality of retaining frames; and a plurality of elastic members, the input connector and the adjacent retaining frame, the output connector and the adjacent retaining frame, and the adjacent retaining frames being connected by at least one elastic member.

[0008] In some optional embodiments, the input connector includes a first end plate and an input shaft, the first end plate has a first central axis, an end face of the first end plate is provided with an input shaft, the input shaft is coaxial with the first central axis, and the other end face of the first end plate is provided with a plurality of first fixing structures, the plurality of first fixing structures are evenly distributed along the circumference of the first central axis, and are respectively used to fix one end of a plurality of core ropes.

[0009] In some optional embodiments, the first end plate is cross-shaped, the first fixing structure is four first grooves, and the four first grooves are respectively arranged at four intersection corners of the other end surface of the first end plate.

[0010] In some optional embodiments, the output connecting member includes a second end plate and an output shaft, the second end plate has a second center axis, an end face of the second end plate is provided with an output shaft, the output shaft is coaxial with the second center axis, and the direction of the output shaft is opposite to the direction of the input shaft, and a plurality of second fixing structures are provided on the other end face of the second end plate, the plurality of second fixing structures are evenly distributed along the circumference of the second center axis, and are respectively used to fix the other ends of the plurality of core ropes.

[0011] In some optional embodiments, the second end plate is cross-shaped, the second fixing structure is four second grooves, and the four second grooves are respectively arranged at four intersection corners of the other end surface of the second end plate.

[0012] In some optional embodiments, the retaining frame has a third center axis, and is provided with a plurality of slots, which are evenly distributed along the circumference of the third center axis, and each slot penetrates the retaining frame axially, and the plurality of slots are respectively used for passing a plurality of core ropes.

[0013] In some optional embodiments, the retaining frame is in the shape of a cross-shaped plate, and the number of the card slots is four, and the four card slots are respectively arranged at the four intersection corners of the retaining frame.

[0014] In some optional embodiments, the plurality of core ropes are parallel and evenly distributed circumferentially along the first center axis, the second center axis, and the third center axis, and the core ropes are steel wire ropes.

[0015] In some optional embodiments, the input connector and the adjacent retaining frame, the output connector and the adjacent retaining frame, and the adjacent retaining frames are connected by a plurality of elastic members distributed along the circumferential direction.

[0016] In some optional embodiments, the first end plate, the second end plate, and the retaining frame are all cross-shaped, and an elastic member is connected between the first end plate and each corresponding end of the adjacent retaining frame, between the second end plate and each corresponding end of the adjacent retaining frame, and between each corresponding end of the adjacent retaining frames, and the elastic member is a spring.

[0017] Based on the above technical scheme, the flexible transmission mechanism provided by the present application arranges multiple retaining frames between the input connector and the output connector at a certain interval, and connects the input connector, the output connector and the multiple retaining frames through multiple core ropes and multiple elastic members, so that the input connector, the output connector and the multiple retaining frames are flexibly connected, and flexible transmission from the input connector to the output connector can be achieved. This structure does not require high coaxiality between the input connector and the output connector, and reduces the requirements for processing accuracy; by changing the number of retaining frames, transmission of different distances can be achieved while ensuring stable and reliable transmission, especially by increasing the number of retaining frames, transmission over longer distances can be achieved; the overall structure is simple and compact, and the size of the input connector, the output connector and the retaining frames, the thickness of the core rope, and the specifications of the elastic members can all be adjusted, so a larger load range can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 A schematic structural diagram of a flexible transmission mechanism provided in an embodiment of the present application.

[0020] Figure 2 A schematic diagram of the structure of an input connector provided in an embodiment of the present application.

[0021] Figure 3 A schematic diagram of the structure of an output connector provided in an embodiment of the present application.

[0022] Figure 4 A schematic diagram of the structure of a retaining frame provided in an embodiment of the present application.

[0023] Figure 5 A partially exploded schematic diagram of a flexible transmission mechanism provided in an embodiment of the present application.

[0024] Figure numerals: 100, flexible transmission mechanism; 10, input connector; 11, first end plate; 111, first groove; 12, input shaft; 20, output connector; 21, second end plate; 211, second groove; 22, output shaft; 30, retaining frame; 31, slot; 40, core rope; 50, elastic member. DETAILED DESCRIPTION

[0025] The specific embodiments of the present application will be described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the description of the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0026] In the description of this application, unless otherwise clearly specified and limited, the terms "connection", "setting", "installation", etc. should be understood in a broad sense. For example, "connection" 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 that two elements are internally connected. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0027] The terms "upper", "lower", "left", "right", "front", "back", "center", "top", "bottom", "inside", "outside", "vertical", "horizontal", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, or are the orientation or position relationship commonly placed when the product of the application is used. They are only for the convenience of description and simplified description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0028] The terms “first”, “second”, “third”, etc. are merely used to distinguish elements of similar nature, and do not indicate or imply relative importance or a particular order, unless expressly specified and limited otherwise.

[0029] The terms "comprises," "includes," "has," or any other variation thereof, are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprises a ..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes the element.

[0030] The term "plurality" means more than two (including two).

[0031] The term "and / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B may represent three situations: A exists alone, A and B exist at the same time, and B exists alone.

[0032] The terms "one embodiment", "as an example", "in one implementation", etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example may be included in at least one embodiment or example of the present application. Schematic representations of such terms do not necessarily refer to the same embodiment, nor are they independent or alternative embodiments that are mutually exclusive with other embodiments. In the absence of conflict, the embodiments in the present application and the features in the embodiments may be combined in a suitable manner.

[0033] Figure 1 A structural diagram of a flexible transmission mechanism 100 provided in an embodiment of the present application is shown in FIG. Figure 1 As shown, an embodiment of the present application provides a flexible transmission mechanism 100 , including an input connector 10 , an output connector 20 , a plurality of retaining frames 30 , a plurality of core ropes 40 , and a plurality of elastic members 50 .

[0034] The input connector 10 is used to connect the driving device. The output connector 20 is used to connect the load device. A plurality of retaining frames 30 are arranged at a certain interval between the input connector 10 and the output connector 20. The two ends of each core rope 40 are respectively connected to the input connector 10 and the output connector 20, and the main body of each core rope 40 is connected in series with a plurality of retaining frames 30. The input connector 10 and the adjacent retaining frames 30, the output connector 20 and the adjacent retaining frames 30, and the adjacent retaining frames 30 are all connected by at least one elastic member 50. Each part is described in detail below.

[0035] Figure 2 A schematic diagram of the structure of an input connector 10 provided in an embodiment of the present application is shown in FIG. Figure 2 As shown, the input connector 10 includes a first end plate 11 and an input shaft 12. The first end plate 11 has a regular shape and has a first central axis A. The input shaft 12 is provided at the center of one end surface of the first end plate 11, and the input shaft 12 is coaxial with the first central axis A. A plurality of first fixing structures are provided on the other end surface of the first end plate 11, and the plurality of first fixing structures are evenly distributed along the circumference of the first central axis A, and are respectively used to fix one end of a plurality of core ropes 40.

[0036] As an example, the first end plate 11 is cross-shaped, the first fixing structure is four first grooves 111 , and the four first grooves 111 are respectively arranged at four intersection corners of the other end surface of the first end plate 11 .

[0037] Figure 3 A schematic diagram of the structure of an output connector 20 provided in an embodiment of the present application is shown in FIG. Figure 3As shown, the output connector 20 includes a second end plate 21 and an output shaft 22. The shape and size of the second end plate 21 are consistent with those of the first end plate 11, and the second end plate 21 has a second central axis B. An output shaft 22 is provided at the center of one end surface of the second end plate 21, and the output shaft 22 is coaxial with the second central axis B, and the direction of the output shaft 22 is opposite to the direction of the input shaft 12. A plurality of second fixing structures are provided on the other end surface of the second end plate 21, and the plurality of second fixing structures are evenly distributed along the circumference of the second central axis B, and are respectively used to fix the other ends of the plurality of core ropes 40.

[0038] As an example, the second end plate 21 is cross-shaped, and the second fixing structure is four second grooves 211 , which are respectively arranged at four intersection corners of the other end surface of the second end plate 21 .

[0039] Figure 4 A schematic diagram of the structure of a retaining frame 30 provided in an embodiment of the present application is shown in FIG. Figure 4 As shown, the retainer 30 has a regular shape and has a third central axis C. The shape and size of the retainer 30 can be consistent with the shape and size of the first end plate 11 and the second end plate 21. The retainer 30 is provided with a plurality of card slots 31, which are evenly distributed along the circumference of the third central axis C, and each card slot 31 penetrates the retainer 30 in the axial direction, and the plurality of card slots 31 are respectively used for passing a plurality of core ropes 40.

[0040] As an example, the shape and size of the retaining frame 30 are consistent with the shape and size of the first end plate 11 and the second end plate 21, and are also in the shape of a cross-shaped plate. There are four slots 31, and the four slots 31 are respectively arranged at the four intersection corners of the retaining frame 30. The cross-section of the slot 31 is circular, which is convenient for the core rope 40 to be passed through.

[0041] Figure 5 A partially exploded schematic diagram of a flexible transmission mechanism 100 provided in an embodiment of the present application is shown in FIG. Figure 1 and Figure 5 As shown, multiple core ropes 40 are arranged in parallel, one ends of the multiple core ropes 40 are respectively fixed on multiple first fixing structures of the input connector 10, and the other ends of the multiple core ropes 40 are respectively fixed on multiple second fixing structures of the output connector 20, and the main bodies of the multiple core ropes 40 are respectively axially inserted into multiple slots of each retaining frame 30.

[0042] As an example, the core rope 40 is a steel wire rope, such as Figures 1 to 5As shown, one end of each steel wire rope is arranged in a first groove 111 and is welded to the first end plate 11, and the other end of the steel wire rope is arranged in a second groove 211 and is welded to the second end plate 21, and the main body of the steel wire rope is passed through a slot 31 of each retaining frame 30; the diameter of the steel wire rope is slightly smaller than the cross-sectional diameter of the slot 31, which can prevent the steel wire rope from easily escaping from the opening of the slot 31.

[0043] For those skilled in the art, in addition to using steel wire rope as the core rope 40, other materials with the same characteristics of high strength, wear resistance, low elasticity, etc. can also be used to make the core rope 40; in addition to welding connection, other fixed connection methods can also be used to connect the core rope 40 and the first end plate 11 and the core rope 40 and the second end plate 21. These should all be covered within the protection scope of this application.

[0044] The input connector 10 and the adjacent retaining frame 30 , the output connector 20 and the adjacent retaining frame 30 , and the adjacent retaining frames 30 are connected by a plurality of elastic members 50 distributed along the circumferential direction.

[0045] As an example, the elastic member 50 is a spring. Since the first end plate 11 of the input connector 10, the second end plate 21 of the output connector 20, and each retaining frame 30 are all cross-shaped and of uniform size, a spring is provided between the first end plate 11 and each corresponding end of the adjacent retaining frame 30, between the second end plate 21 and each corresponding end of the adjacent retaining frame 30, and between each corresponding end of the adjacent retaining frames 30, respectively, so that the first end plate 11 and the adjacent retaining frame 30, the second end plate 21 and the adjacent retaining frame 30, and the adjacent retaining frames 30 are all connected by four springs distributed along the circumferential direction.

[0046] When the flexible transmission mechanism 100 is in use, the input shaft 12 of the input connector 10 is connected to the driving device, and the output shaft 22 of the output connector 20 is connected to the load device, so that the flexible transmission between the driving device and the load device can be realized. When the driving device drives the input shaft 12 of the input connector 10 to rotate, the input connector 10 drives the adjacent retainer 30 to rotate through the multiple core ropes 40 and the multiple elastic members 50 connected thereto, and the retainer 30 continues to drive the next retainer 30 to rotate through the multiple core ropes 40 and the multiple elastic members 50 connected thereto, and so on, the last retainer 30 drives the output connector 20 to rotate through the multiple core ropes 40 and the multiple elastic members 50 connected thereto, and the output shaft 22 drives the connected load device to work.

[0047] Among them, since the multiple core ropes 40 are evenly distributed along the circumference and penetrate the slots 31 of each retainer 30, the retainer 30 keeps the relative positions of the multiple core ropes 40 stable and will not be mixed together with the rotation of the input connector 10; the multiple elastic members 50 are evenly distributed along the circumference between the input connector 10, the output connector 20, and the multiple retainers 30, so that the input connector 10, the output connector 20, and the multiple retainers 30 can adjust the relative positions adaptively. In this way, the stability and reliability of the flexible transmission of the flexible transmission mechanism 100 can be guaranteed.

[0048] In addition, the input connector 10, the output connector 20, and the retainer 30 are all easy to manufacture or purchase at a low cost. The coaxiality requirement of the input shaft 12 and the output shaft 22 is not high, which reduces the requirement for processing accuracy.

[0049] The number of retaining frames 30 can be adjusted as needed, so that transmission over different distances can be achieved while ensuring stable and reliable transmission. In particular, by increasing the number of retaining frames 30, transmission over longer distances can be achieved.

[0050] The sizes of the input connector 10, the output connector 20 and the retaining frame 30, the thickness of the core rope 40, and the specifications of the elastic member 50 can all be adjusted, and the flexible transmission mechanism 100 can achieve a larger load range.

[0051] The above description is only a specific implementation mode of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the field can easily think of various changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application.

Claims

1. Flexible transmission mechanism, characterized in that: include: Input connector, used to connect the drive device; Output connector, used to connect load equipment; A plurality of retaining frames are arranged at a certain interval between the input connector and the output connector; A plurality of core ropes, both ends of each core rope are respectively connected to the input connector and the output connector, and the main body of each core rope is connected in series with a plurality of retaining frames; and A plurality of elastic members, wherein the input connector and the adjacent retaining frame, the output connector and the adjacent retaining frame, and the adjacent retaining frames are all connected by at least one of the elastic members; The input connector comprises a first end plate and an input shaft, the first end plate has a first central axis, one end surface of the first end plate is provided with the input shaft, the input shaft is coaxial with the first central axis, and the other end surface of the first end plate is provided with a plurality of first fixing structures, the plurality of first fixing structures are evenly distributed along the circumference of the first central axis, and are respectively used to fix one end of a plurality of the core ropes; The output connector comprises a second end plate and an output shaft, the second end plate has a second central axis, one end surface of the second end plate is provided with the output shaft, the output shaft is coaxial with the second central axis, and the direction of the output shaft is opposite to the direction of the input shaft, and the other end surface of the second end plate is provided with a plurality of second fixing structures, the plurality of second fixing structures are evenly distributed along the circumference of the second central axis, and are respectively used to fix the other ends of the plurality of core ropes; The first end plate, the second end plate and the retaining frame are all cross-shaped, and one of the elastic members is connected between the first end plate and each corresponding end of the adjacent retaining frame, between the second end plate and each corresponding end of the adjacent retaining frame, and between each corresponding end of the adjacent retaining frames; When the flexible transmission mechanism is in use, the input connector is connected to the driving device through the input shaft and is driven to rotate by the driving device. The input connector drives the adjacent retaining frames to rotate through the multiple core ropes and the multiple elastic members connected to them. The multiple retaining frames are driven to rotate in turn through the multiple core ropes and the multiple elastic members connected to them. The last retaining frame drives the output connector to rotate. The output connector is connected to the load device through the output shaft and drives the load device to work.

2. The flexible transmission mechanism according to claim 1, characterized in that: The first fixing structure is a first groove and the number is four. The four first grooves are respectively arranged at four intersection corners of the other end surface of the first end plate.

3. The flexible transmission mechanism according to claim 1, characterized in that: The second fixing structure is a second groove and the number is four. The four second grooves are respectively arranged at four intersection corners of the other end surface of the second end plate.

4. The flexible transmission mechanism according to claim 1, characterized in that: The retaining frame has a third central axis, and is provided with a plurality of slots, which are evenly distributed along the circumference of the third central axis, and each slot penetrates the retaining frame axially, and the plurality of slots are respectively used for passing a plurality of the core ropes.

5. The flexible transmission mechanism according to claim 4, characterized in that: The number of the card slots is four, and the four card slots are respectively arranged at four intersection corners of the retaining frame.

6. The flexible transmission mechanism according to claim 4, characterized in that: The plurality of core ropes are parallel and evenly distributed along the circumference of the first center axis, the second center axis and the third center axis, and the core ropes are steel wire ropes.

7. The flexible transmission mechanism according to claim 1, characterized in that: The elastic member is a spring.

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