CN114233762A

CN114233762A - Flexible coupling rod and coupling

Info

Publication number: CN114233762A
Application number: CN202111355285.7A
Authority: CN
Inventors: 伍保华; 胡伟辉; 程海涛; 吴丁汀; 秦中正; 彭浩坤
Original assignee: Zhuzhou Times New Material Technology Co Ltd
Current assignee: Zhuzhou Times New Material Technology Co Ltd
Priority date: 2021-11-16
Filing date: 2021-11-16
Publication date: 2022-03-25
Anticipated expiration: 2041-11-16
Also published as: CN114233762B

Abstract

The invention relates to a flexible coupling rod, comprising: the driving part and the driven part are connected through the transmission part, shaft holes capable of being connected with a mechanical device are formed in the driving part and the driven part, the transmission part can transmit torque from the driving part to the driven part, and the transmission part is an elastic part, so that the transmission part can be elastically deformed in the transmission process, and compensation displacement is generated. The flexible connecting shaft rod can realize flexible connection between mechanical equipment and simultaneously reduce the counter force generated when the shaft rod shifts.

Description

Flexible coupling rod and coupling

Technical Field

The invention relates to a flexible coupling rod and a coupling comprising the flexible coupling rod.

Background

In mechanical systems, different mechanical transmissions require certain components to be coupled in order to transmit motion and torque backwards. The coupler has good displacement compensation performance and vibration and noise reduction capability in a mechanical system, and is often widely applied to connection of mechanical transmission equipment in industries such as vehicles, ships, cranes, chemical engineering, logistics and the like.

In the field of rail transit, the requirements on a locomotive vehicle transmission system are extremely high, the size of a transmission space is strictly limited, and as a key component of the transmission system, a locomotive coupler is required to be capable of improving and optimizing axial vibration frequency, reducing vibration amplitude, compensating axial space for displacement and reducing noise. Therefore, the conventional rigid connecting rod or the large-sized coupler cannot meet the development requirement of the rail transit vehicle. In addition, some elastic couplings used in railway vehicles have a problem that displacement in the axial direction thereof generates a large reaction force which adversely affects a bearing of a transmission system component such as a traction motor and reduces the life of the bearing.

Disclosure of Invention

In view of the above technical problems, the present invention is directed to a flexible coupling rod. The flexible connecting shaft rod can realize flexible connection between mechanical equipment and simultaneously reduce the counter force generated when the shaft rod shifts.

According to a first aspect of the present invention there is provided a flexible coupling rod for use with a drive member and a driven member connected by a transmission member, the drive member and driven member having axial bores configured to enable connection of a mechanical device, the transmission member being capable of transmitting torque from the drive member to the driven member.

The transmission part is constructed as an elastic part, so that the transmission part can be elastically deformed in the transmission process, and therefore compensation displacement is generated.

In a preferred embodiment, a protective layer is further arranged on the transmission member, and vulcanization forming is adopted between the protective layer and the transmission member.

In a preferred embodiment, a plurality of slots are further formed in the protective layer.

In a preferred embodiment, the transmission member is configured as a plurality of elastic filaments connected between the driving member and the driven member, and the filaments are made of a carbon fiber material or a nylon fiber material.

In a preferred embodiment, connecting rods for connecting the filaments are respectively provided on opposite side walls of the driving member and the driven member, and the plurality of filaments are uniformly arranged on the connecting rods in the width direction.

In a preferred embodiment, the connecting rod and the driving member and the driven member have first gaps therebetween in a length direction, and the filament is configured in a ring shape, and both ends thereof pass through the first gaps, respectively, to be wound around the connecting rod.

In a preferred embodiment, the connecting rod is configured in a flat plate shape, serial holes penetrating the connecting rod in a height direction are respectively formed in opposite side walls of the driving member and the driven member, and both ends of the fiber thread are respectively penetrated through the serial holes to be wound on the connecting rod.

In a preferred embodiment, the connecting rod is configured in a flat plate shape, and a plurality of reinforcing ribs are further symmetrically provided at both ends of the connecting rod in the height direction.

In a preferred embodiment, the transmission element is designed as a sheet-like fiber cloth made of fiber filaments, which is connected between the driving element and the driven element.

In a preferred embodiment, the driving member and the driven member include an upper plate body and a lower plate body arranged in a height direction, a second gap is formed between the upper plate body and the lower plate body, and two ends of the fiber piece respectively extend into and are connected with the second gap.

According to a second aspect of the present invention there is provided a coupling comprising a plurality of said flexible coupling rods. The flexible coupling rods are connected end to end through pin shafts penetrating through the shaft holes to form a ring shape, and a power input shaft and a power output shaft which can be connected with a mechanical device are respectively arranged on the side walls at the two ends of the coupling.

In a preferred embodiment, the number of flexible coupling rods is set to an integer multiple of 2.

Drawings

The invention will now be described with reference to the accompanying drawings.

FIG. 1 shows a schematic view of a flexible coupling rod according to one embodiment of the present invention.

Fig. 2 is a schematic view of a driving member and a driven member of another embodiment of the flexible coupling rod shown in fig. 1.

Figure 3 is a schematic view of another embodiment of a transmission of the flexible coupling rod of figure 1.

Fig. 4 is a schematic view of another embodiment of the flexible coupling rod shown in fig. 1.

Fig. 5 is a schematic view of a coupling comprised of the flexible coupling rod shown in fig. 1.

In the present application, the drawings are all schematic and are used only for illustrating the principles of the invention and are not drawn to scale.

Detailed Description

The invention is described below with reference to the accompanying drawings.

Figure 1 shows a flexible coupling rod 100 according to one embodiment of the present invention. As shown in fig. 1, the flexible coupling rod 100 includes a driving member 10 and a driven member 20. The driving member 10 and the driven member 20 are connected through a transmission member 30, and the transmission member 30 can transmit the torque from the driving member 10 to the driven member 20. Meanwhile, shaft holes 15 are respectively formed in the driving member 10 and the driven member 20, and the driving member 10 and the driven member 20 can be respectively connected to different machines (not shown) through the shaft holes 15. Therefore, when the mechanical equipment connected to the driving part 10 moves, the driving part 10 can be driven to move, and the torque is transmitted to the driven part 20 through the transmission part 30, so that the mechanical equipment connected to the driven part 20 is driven to move, and the torque transmission between different mechanical equipment is realized.

Herein, for convenience, the term "length direction" means a direction extending from the driving member 10 to the driven member 20, i.e., a horizontal direction of the drawing plane in fig. 1, the term "width direction" means a vertical direction of the drawing plane in fig. 1, and the term "height direction" means a direction perpendicular to the drawing plane in fig. 1.

In the present invention, the transmission member 30 is configured as an elastic member, so that the transmission member 30 can be elastically deformed during the transmission process, thereby generating a compensation displacement, thereby achieving a flexible connection between different mechanical devices. By the arrangement, the vibration damping capacity and the noise reduction capacity of the mechanical equipment can be improved in the transmission process.

Further, the transmission member 30 is configured as a fiber wire 32 having elasticity connected between the driving member 10 and the driven member 20. The filaments 32 are preferably made of carbon fiber material or nylon fiber material, which have good strength and toughness to meet the requirement of elastic deformation during transmission. Meanwhile, compared to the metal materials commonly used in the conventional transmission device, the density of these materials is lower, which can effectively reduce the mass of the flexible coupling rod 100. Also, the number of the filaments 32 may be provided in plural, so that the strength of the transmission member 30 can be increased or decreased by increasing or decreasing the number of the filaments 32, thereby adapting to various connection conditions.

As shown in fig. 1, connecting bars 22 are respectively connected to opposite side walls 25 of the driving member 10 and the driven member 20, and the connecting bars 22 are arranged in the width direction. Both ends of the fiber 32 are respectively connected to the connecting rods 22.

Specifically, first gaps 23 are respectively formed between the connecting rod 22 and the driving member 10 and the driven member 20 in the length direction. The fiber thread 32 is configured in a ring shape, and both ends thereof pass through the first gaps 23, respectively, to be wound around the connection bar 22. Also, the plurality of filaments 32 are uniformly arranged in the width direction.

Thus, when it is necessary to increase the strength of the transmission member 30, it is possible to eliminate the need to add up the plurality of filaments 32 in the height direction at the same position of the connecting rod 22 by merely increasing the number of filaments 32 in the width direction. By this arrangement, the dimension of the transmission member 30 in the height direction (i.e., the thickness of the transmission member 30) can be reduced as much as possible. Thereby enabling the flexible coupling rod 100 to be installed in a low height installation environment.

On the other hand, when the transmission member 30 is elastically displaced by being stretched, a reaction force in the height direction is applied, and this reaction force hinders the normal elastic displacement of the transmission member 30. And damage to the flexible coupling rod 100 when this reaction force is greater than a certain threshold. Since the magnitude of the reaction force is proportional to the dimension of the transmission member 30 in the height direction, the reaction force applied to the transmission member 30 decreases as the dimension thereof in the height direction decreases. In summary, the flexible coupling rod 100 of the present invention can also effectively reduce the reaction force generated when the transmission member 30 is deformed, so as to protect the transmission member 30.

Fig. 2 is a schematic view of the driving member 10 and the driven member 20 of another embodiment of the flexible coupling rod 100 shown in fig. 1. As shown in fig. 2, in the present embodiment, the connecting rod 22 connected to the driving member 10 and the driven member 20 is configured in a flat plate shape. The opposite side walls of the driving member 10 and the driven member 20 are respectively provided with a serial hole 24 penetrating the connecting rod 22 in the height direction, and both ends of the fiber thread respectively penetrate the serial holes 24 to be wound on the connecting rod.

Thus, the connecting rod 22 may have a certain width in the length direction by configuring the connecting rod 22 in a flat plate shape. Therefore, the connecting rod 22 can support the fiber filaments 32, the vibration of the fiber filaments 32 in the height direction in the stretching process is reduced, and the risk of fracture failure of the fiber filaments 32 is reduced

Further, as shown in fig. 2, a plurality of reinforcing ribs 321 are symmetrically provided at both ends of the connecting rod 22 in the height direction. The plurality of reinforcing ribs 321 are preferably provided at the center and both ends in the width direction of the connecting rod 22. The reinforcing ribs 321 can increase the strength of the driving part 10 and the driven part 20, and prevent the driving part 10 and the driven part 20 from being damaged under the action of long-term tension, so that the failure risk of the driving part 10 and the driven part 20 is reduced, and the service life of the driving part 10 and the driven part 20 is prolonged.

Fig. 3 is a schematic view of another embodiment of the transmission member 30 of the flexible coupling rod 100 shown in fig. 1. As shown in fig. 3, the transmission member 30 is configured as a sheet-shaped fiber cloth 325 made of fiber filaments 32 by a weaving process or the like. Specifically, the driving member 10 and the driven member 20 respectively include an upper plate body 16 and a lower plate body 18 arranged in a height direction, and a second gap 17 is formed between the upper plate body 16 and the lower plate body 18. Two ends of the fiber cloth 325 respectively extend into the second gap 17 and are fixedly connected with the upper plate body 16 and the lower plate body 18 respectively in a compression joint mode.

It will be readily appreciated that the individual filaments 32, due to their relatively small diameter, tend to have a relatively low strength and are susceptible to failure by breakage during drawing, particularly when subjected to shock during drawing. The sheet-shaped fiber cloth 325 made of the fiber yarn 32 by a textile process or the like can effectively improve the strength of the fiber yarn 32, reduce the risk of breakage thereof, and improve the reliability of the transmission member 30. When the force-bearing strength of the transmission member 30 needs to be improved, the size of the fiber cloth 325 in the width direction needs to be increased, so that the size (i.e., the thickness) of the fiber cloth 325 in the height direction is prevented from being increased. This reduces the height-direction reaction force to which the fiber cloth 325 is subjected when it is elastically displaced.

Fig. 4 is a schematic view of another embodiment of the flexible coupling rod 100 shown in fig. 1. As shown in fig. 4, a protective layer 40 is further disposed on the transmission member 30. The protective layer 40 is made of an elastic material, which may be rubber, for example, and is arranged on the transmission member 30 by a vulcanization process. The protective layer 40 can protect and manufacture the transmission member 30 on one hand, and prevent the transmission member 30 from being damaged by external objects; on the other hand, the protective layer 40 can maintain the winding state of the filament 32, and improve the reliability of the transmission member 30.

Furthermore, a plurality of hollowed-out slots 45 are also arranged on the protective layer 40. The plurality of slots 45 are arranged along the width direction of the protective layer 40. The rigidity of the protective layer 40 can be reduced by providing the slot 45, thereby facilitating the elastic displacement of the flexible link rod 100.

In the present invention, a worker can splice a plurality of the flexible coupling rods 100 to form the coupling 50 according to the requirement.

Fig. 5 is a schematic view of the coupling 50 formed from the flexible coupling shaft 100 shown in fig. 1. As shown in fig. 5, the plurality of flexible coupling rods 100 are formed in a ring shape by connecting end to end by means of pins 151 passing through the shaft holes 15. A power input shaft 52 and a power output shaft 54 capable of connecting mechanical devices are respectively arranged on the side walls of the two ends of the coupling 50. The flexible coupling shaft 100 is divided equally into two sets, one of which is connected to the power input shaft 52 and the other of which is connected to the power output shaft 54. Therefore, to ensure the stability of the coupling 50, the number of the flexible coupling rods 100 is set to be an integral multiple of 2.

The coupling 50 composed of 4 flexible coupling rods 100 shown in fig. 5 will be described in detail below.

As shown in fig. 5, two of the flexible coupling shafts 100 of the coupling 50 are connected to the power input shaft 52 to form the driving shaft 56, and the other two are connected to the power output shaft 54 to form the driven shaft 58.

When the mechanical device connected to the power input shaft 52 moves, power is input from the input shaft 52 and transmitted to the two active shafts 56 through the connecting member, resulting in the two active shafts 56 being stretched. The other two driven shafts 58 are then compressed by the drive shaft 56 and transmit torque to the power take-off shaft 54, thereby completing the torque transmission.

When the power input shaft 52 and the power output shaft 54 have axial displacement changes, the flexible coupling rod 100 can complete axial displacement by utilizing elastic deformation of fibers, so that the requirement of elastic displacement between the power input shaft 52 and the power output shaft 54 is met.

The operation of the flexible coupling rod 100 according to the present invention is briefly described as follows.

The flexible coupling rod 100 of the present invention is connected to two mechanical devices at the same time, thereby realizing torque transmission between the two mechanical devices. When the mechanical equipment connected to the driving part 10 moves, the driving part 10 can be driven to move, and the torque is transmitted to the driven part 20 through the transmission part 30, so that the mechanical equipment connected to the driven part 20 is driven to move, and therefore torque transmission between different mechanical equipment is achieved. In this process, the transmission member 30 is configured as an elastic member, so that the transmission member 30 can be elastically deformed during the transmission process, thereby generating a compensation displacement, thereby achieving a flexible connection between different mechanical devices, and improving the vibration damping capability and the noise reduction capability of the mechanical devices.

Finally, it should be noted that the above-mentioned embodiments are only preferred embodiments of the present invention, and do not limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing examples, or that equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A flexible coupling rod comprising:

a driving part (10) and a driven part (20) which are connected through a transmission part (30), wherein shaft holes (15) capable of being connected with a mechanical device are formed on the driving part and the driven part, the transmission part can transmit the torque from the driving part to the driven part,

2. Flexible coupling rod according to claim 1, characterized in that a protective layer (40) is provided on the transmission element, and vulcanization molding is used between the protective layer and the transmission element.

3. The flexible coupling rod according to claim 2, wherein a plurality of slots (45) are further formed in the protective layer.

4. A flexible coupling rod according to any one of claims 1-3, wherein the transmission member is configured as a plurality of resilient filaments (32) connected between the driving member and the driven member, the filaments being made of a carbon fiber material or a nylon fiber material.

5. The flexible coupling rod according to claim 4, wherein connecting rods (22) connecting the filaments are provided on opposite side walls of the driving member and the driven member, respectively, and the plurality of filaments are uniformly arranged on the connecting rods in a width direction.

6. Flexible coupling rod according to claim 5, characterized in that the connecting rod and the driving and driven members have a first gap (23) therebetween in the length direction,

the filament is configured in a ring shape, and both ends of the filament respectively pass through the first gap to be wound on the connecting rod.

7. The flexible coupling rod according to claim 6, wherein the connecting rod is constructed in a flat plate shape, and serial holes (24) passing through the connecting rod in a height direction are respectively formed at opposite side walls of the driving member and the driven member, and both ends of the fiber thread are respectively passed through the serial holes to be wound around the connecting rod.

8. The flexible coupling rod according to claim 7, wherein a plurality of reinforcing ribs (321) are further symmetrically provided at both ends in the height direction of the connecting rod.

9. A flexible coupling rod according to any one of claims 1-3, wherein the transmission member is configured as a sheet-like fibre cloth (325) of the fibre filaments connected between the driving member and the driven member.

10. The flexible coupling rod according to claim 9, wherein the driving member and the driven member comprise an upper plate body (16) and a lower plate body (18) arranged in a height direction, a second gap (17) is formed between the upper plate body and the lower plate body, and both ends of the fiber cloth respectively extend into and are connected to the gaps.

11. A coupling comprising a plurality of flexible coupling rods according to any one of claims 1 to 10, said plurality of flexible coupling rods being connected end to end by a pin (151) passing through said axial bore so as to be formed in a ring shape,

and a power input shaft (52) and a power output shaft (54) which can be connected with a mechanical device are respectively arranged on the side walls at the two ends of the coupler.

12. The coupling of claim 11 wherein the number of flexible coupling rods is set to an integer multiple of 2.