CN207265592U

CN207265592U - Turn round cable protection device and wind power generating set

Info

Publication number: CN207265592U
Application number: CN201720839006.7U
Authority: CN
Inventors: 李娇娇; 胡国佳; 李鹏
Original assignee: Xinjiang Goldwind Science and Technology Co Ltd
Current assignee: Jinfeng Technology Co ltd
Priority date: 2017-07-11
Filing date: 2017-07-11
Publication date: 2018-04-20
Anticipated expiration: 2027-07-11

Abstract

The utility model provides a kind of torsion cable protection device and wind power generating set.Turning round cable protection device includes：Cable fixed component, has the first retainer ring and is arranged at the retainer in the outside of the first retainer ring, be fixedly connected on the inside of the first retainer ring formed with cable by hole by cable by the cable in hole with the first retainer ring；Limiting component, limiting component and cable fixed component are provided with arrangement for guiding with corresponding to each other, limiting component and cable fixed component can relatively movably be set by arrangement for guiding, limiting component includes connecting portion and the butting section being connected to each other, connecting portion is fixedly connected on external support members, butting section is fitted to each other with retainer, to limit the rotational angle of the first retainer ring.It can realize that the cable for avoiding bunchy from being laid with occurs radially to rock and collide peripheral parts, limit the windup-degree of cable, avoid reversing in the cable for turning round cable section and excessively stack, and purpose one or more of is impacted to the service life of cable.

Description

Cable twisting protection device and wind generating set

Technical Field

The utility model relates to a wind power generation technical field especially relates to a turn round cable protection device and wind generating set.

Background

One feature of wind turbine generator systems is that the nacelle and the impeller assembly are located far from the ground, and the generator, the speed increaser, the pitch control system, the yaw control system and other important components are installed in the nacelle. In order to realize the transmission of energy and data, the equipment at the bottom of the tower and the equipment at the top of the tower need to be connected through cables, and the cables need to be laid in the tower in bundles and separated from the inner wall of the tower.

Because the wind generating set needs to deflect the wind during working, the engine room of the wind generating set needs to rotate in a certain angle, and the cable twisting section of the cable is twisted along with the rotation. To ensure that the connecting cables are not damaged during rotation, the cables have an overhanging section that is typically centrally located on the tower and runs axially along the tower. And the cables may be laid in different positions on the tower, for example at the saddle level inside the tower, bent to a predetermined arc. However, during the twisting of the cables, the cables in the twisted cable sections are prone to shake and deviate from the vertical center of the tower, and collision and friction occur between the cables and surrounding components. And the twisting amount of the cable at the saddle surface is not easy to control, when the cable is excessively twisted, the cable can be seriously bundled, the mutual friction and damage of the cable skins are caused, meanwhile, the heat generated when current passes through the cable is accumulated, and the over-temperature operation is very easy to occur, so that the service life of the cable is influenced.

Therefore, a new twisted cable protection device and a wind turbine generator set are needed.

SUMMERY OF THE UTILITY MODEL

According to the utility model discloses an embodiment provides a turn round cable protection device and wind generating set, can realize avoiding the cable that the bundling was laid to take place to radially rock and collide the part on every side, the angle of torsion of restriction cable, the cable of avoiding being in the section of turning round the cable twists reverse excessively to take place to pile up, and lead to the fact one or more purposes in the influence to the life of cable.

According to an aspect of the embodiment of the utility model provides a turn round cable protection device, include: a cable fixing member having a first fixing ring and a stopper portion provided outside the first fixing ring, the first fixing ring having a cable passage hole formed inside thereof, the cable passing through the cable passage hole being fixedly connected to the first fixing ring; and the limiting part and the cable fixing part are correspondingly provided with guide assemblies, the limiting part and the cable fixing part can be arranged in a relatively movable mode through the guide assemblies, the limiting part comprises a connecting part and an abutting part which are connected with each other, the connecting part is fixedly connected to the external supporting part, and the abutting part and the stopping part are matched with each other to limit the rotation angle of the first fixing ring.

According to an aspect of the embodiments of the present invention, the guide assembly includes a guide passage provided at one of the cable fixing part and the stopper part and a fitting portion provided at the other of the cable fixing part and the stopper part, the fitting portion being matched with the guide passage.

According to an aspect of the embodiment of the present invention, the cable fixing member further includes a second fixing ring concentrically fitted outside the first fixing ring and fixedly connected to the first fixing ring, the guide passage is formed in an annular space between the first fixing ring and the second fixing ring, the fitting portion is a cylinder provided along an axial extension of the first fixing ring, and the cylinder extends into the annular space and can move in the annular space.

According to the utility model discloses an aspect, the cylinder runs through the annular space and has predetermined length to spacing part still includes the card portion of holding, and the card portion of holding sets up in keeping away from connecting portion one side of cylinder, so that when the solid fixed ring of first solid fixed ring and second removed along the relative cylinder of axial, can support the card cooperation through holding the portion with the card, prevents that cable fixed part breaks away from spacing part.

According to the utility model discloses an aspect, guide channel is the first concave card groove of annular that sets up on first solid fixed ring's outer peripheral face, and cooperation portion is the first protruding card body that sets up on spacing part and suit with first concave card groove shape, and first protruding card body can inlay the card and remove in first concave card groove and along the orbit that first concave card groove was injectd.

According to the utility model discloses an aspect, guide channel is the second concave card groove that sets up on spacing part's outer peripheral face, and the cooperation portion is the annular second protruding card body that sets up on the first solid fixed ring outer peripheral face and suit with second concave card groove shape, and the second protruding card body can inlay the card and remove in second concave card groove and along the orbit that second concave card groove was injectd.

According to an aspect of the embodiments of the present invention, the limiting member is a telescopic structure.

According to the utility model discloses an aspect, the dog of detent for setting up in the first solid fixed ring outside supports the portion for the wall of cylinder, and the dog can support with the wall of cylinder and support and lean on the cooperation to the turned angle of restriction first solid fixed ring.

According to an aspect of an embodiment of the present invention, the stopper portion includes two stoppers provided spaced apart from each other in a circumferential direction of the first fixing ring; or, the limiting part comprises two columns which are arranged at intervals along the circumferential direction of the first fixing ring.

According to an aspect of the embodiment of the present invention, the position of the stopper may be adjusted along the circumferential direction of the first fixing ring.

According to another aspect of the embodiments of the present invention, there is provided a wind turbine generator system, which includes the above-mentioned twisted cable protection device.

To sum up, the utility model discloses turn round cable protection device and wind generating set of embodiment is with cable fixed part and cable fixed connection, and will cooperate each other with cable fixed part and carry out the connecting portion and the outside support component that the spacing part protected the cable through spacing part self sets up to be connected. And the cable fixing part and the limiting part are correspondingly provided with guiding components, so that the cable fixing part and the limiting part can be connected in a relatively movable and guiding state. Thereby, the cable fixing member can be restricted at the preset position by the stopper member without radial play, while the cable fixing member can be allowed to twist along with the cable. Further, the rotation angle of the cable fixing member relative to the stopper member is restricted by the stopper portion provided in the cable fixing member and the abutting portion provided in the stopper member being engaged with each other. Therefore the utility model discloses turn round cable protection device can prevent that the cable that the beam forming was laid from because taking place radially to rock and colliding parts on every side, can also restrict the angle of torsion of cable simultaneously to avoid being in the cable of turning round the cable section because twist reverse excessively and take place the phenomenon of piling up, and then can avoid leading to the fact the influence to the life of cable because the heat is concentrated.

Drawings

The invention may be better understood from the following description of particular embodiments thereof taken in conjunction with the accompanying drawings, in which:

other features, objects and advantages of the invention will become more apparent from the following detailed description of non-limiting embodiments thereof, when read in conjunction with the accompanying drawings, in which like or similar reference characters identify the same or similar features.

Fig. 1 is a schematic perspective view of a twisted cable protection device according to an embodiment of the present invention;

fig. 2 is a schematic structural view of a specific example of a stopper portion of a twisted cable protection device according to an embodiment of the present invention;

fig. 3 is a schematic perspective view of a twisted cable protection device according to another embodiment of the present invention;

FIG. 4 is a schematic top view of the twist cable protection assembly of FIG. 3;

3 FIG. 3 5 3 is 3 a 3 schematic 3 cross 3- 3 sectional 3 view 3 of 3 the 3 twisted 3 cable 3 protection 3 device 3 of 3 FIG. 3 4 3 taken 3 along 3 plane 3 A 3- 3 A 3; 3

Fig. 6 is a schematic perspective view of a twisted cable protection device according to another embodiment of the present invention;

fig. 7 is a schematic cross-sectional view of a twisted cable protection device according to another embodiment of the present invention.

Wherein:

1-cable twisting protection device; 2-cable twisting protection device; 3-cable twisting protection device; 4-cable twisting protection;

10-a cable fixing part; 11-a first retaining ring; 11 a-cable passing hole; 12-a second retaining ring; 13-an annular gap; 14-a stopper; 15-a block; 16-a first female slot; 17-a second convex card body; 18-a stop block; 19-a stopper;

20-a stop member; 21-a column; 21 a-a first portion; 21 b-a second portion; 22-a connecting part; 23-a catch; 24-a first card body; 25-second female slot.

Detailed Description

Features and exemplary embodiments of various aspects of the present invention will be described in detail below. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the invention by illustrating examples of the invention. In the drawings and the following description, at least some well-known structures and techniques have not been shown in detail in order to avoid unnecessarily obscuring the present invention; also, the dimensions of some of the structures may be exaggerated for clarity. The same reference numerals denote the same or similar structures in the drawings, and thus detailed descriptions thereof will be omitted. Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

The directional terms appearing in the following description are directions shown in the drawings, and do not limit the specific structure of the cable twisting protector of the present invention. In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be directly connected or indirectly connected. The specific meaning of the above terms in the present invention can be understood as the case may be, by those of ordinary skill in the art.

The embodiment of the utility model provides a turn round cable protection device can use in wind generating set, installs in a tower section of thick bamboo, carries out spacing protection to the cable that is in the cable section of turning round, can prevent that the cable from taking place radially to rock, can also restrict the torsion angle that the circumference takes place to the cable simultaneously to prevent that the cable from excessively turning round and causing the damage to cable itself. It is possible to protect the twisted cable portion where excessive twisting is likely to occur. Of course, for wind turbine generators, the cables suspended inside the tower include not only electrical cables but also control cables for transmitting control signals. Additionally, the utility model discloses turn round cable protection device not only can use in wind generating set, can also use in other equipment that are used for power transmission and distribution, protects being in the state of dangling and probably taking place the cable of serious torsion.

For a better understanding of the present invention, a twisted cable protection device according to an embodiment of the present invention will be described in detail below with reference to fig. 1 to 7.

Fig. 1 is a schematic perspective view of a twisted cable protection device 1 according to an embodiment of the present invention. As shown in fig. 1, the twisting protector 1 includes a cable fixing member 10 and a stopper member 20. The cable fixing member 10 has a first fixing ring 11 and a stopper portion provided outside the first fixing ring 11, a cable passing hole 11a is formed inside the first fixing ring 11, and a cable passing through the cable passing hole 11a is fixedly connected to the first fixing ring 11. The position limiting part 20, the position limiting part 20 and the cable fixing part 10 are provided with guiding components corresponding to each other, the position limiting part 20 and the cable fixing part 10 are relatively movably provided through the guiding components, the position limiting part 20 comprises a connecting part 22 and an abutting part, the connecting part 22 is fixedly connected to an external supporting part (not shown in the figure), and the abutting part and the stopping part are matched with each other to limit the rotation angle of the first fixing ring 11.

Thus, in the above-described embodiment, the cable fixing member 10 fixedly connected to the cable and the stopper member 20 fixedly connected to the external support member are movably engaged with each other through the guide assembly relatively to each other, to further engage with each other through the stopper portion provided in the cable fixing member 10 and the abutting portion provided in the stopper member 20, to hold the cable fixing member 10 at the fixed position while allowing the cable fixing member 10 to perform a certain range of rotation with respect to the stopper member 20. Therefore the utility model discloses turn round cable protection device 1 can avoid turning round the cable of cable section and take place to rock twisting the in-process, makes the cable remain throughout and puts at predetermined central point, prevents to take place wearing and tearing between cable and the adjacent part, also can prevent simultaneously that the cable from causing serious bundling phenomenon owing to excessively turning round, and then influences the cable heat dissipation and influences the life of cable.

According to an embodiment of the present invention, the cable-twisting protection device 1 is used for being disposed in a tower (not shown in the figure) of a wind turbine generator system, and can protect the suspension cable laid near the saddle surface (of course, other cables twisted around the cable section can also be protected). As shown in fig. 1, the cable fixing member 10 includes: a first retaining ring 11, a second retaining ring 12, an annular gap 13 and a stop 14.

Specifically, the first fixing ring 11 is annular as a whole, and a cable passing hole 11a is formed inside, and a corresponding cable fixing structure may be provided in the cable passing hole 11 a. Since the cable extends in a bundle-like form, the cable bundle can be passed through the cable passing hole 11a and fixed with the first fixing ring 11 by the cable fixing structure. Thus, when the cable is twisted in some cases, the first fixing ring 11, which is sleeved and fixed outside the cable, can rotate synchronously with the cable. Of course, the embodiment of the present invention is not limited to the cable fixing structure in the cable passing hole 11a, and the cable fixing structure may be fixed in any conventional manner as long as the cable can be fixed in the cable passing hole 11a so that the first fixing ring 11 is twisted together with the cable.

The second fixing ring 12 is also annular and has the same thickness and height as the first fixing ring 11, and the second fixing ring 12 is concentrically fitted around the outside of the first fixing ring 11 and fixedly connected to the first fixing ring 11. Thereby, a guide channel, i.e. an annular gap 13, is formed between the first fixing ring 11 and the second fixing ring 12. In this embodiment, the stop is a stop 14. The first fixing ring 11 and the second fixing ring 12 are fixedly connected by a stopper 14, and the connected stopper 14 is located in the annular gap 13 and extends in the annular gap 13 for a predetermined length to form two restricting surfaces opposing each other in the circumferential direction in the annular gap 13.

With continued reference to fig. 1, according to one embodiment of the present invention, the position limiting member 20, which is engaged with the cable fixing member 10, includes: a column 21, a connecting portion 22, and a catch 23.

Specifically, the main body of the position limiting member 20 is a column 21, and a connecting portion 22 is provided at one of two end portions of the column 21, and a catching portion 23 is provided at the other end. In this embodiment, the connecting portion 22 is a connecting plate, and the connecting plate is provided with a corresponding connecting hole, so that the connecting portion 22 can be fixedly connected to an external supporting component (e.g. a platform or a beam above a saddle surface), so as to fix the whole limiting component 20. Of course, the specific arrangement of the connecting portion 22 is not limited to this, and in other embodiments, the connecting portion 22 may also be another connecting structure, for example, a connecting buckle.

In the present embodiment, the cylindrical body 21, which serves as the engagement portion, has a cylindrical shape and is capable of extending into the annular space 13 of the cable fixing member 10 and moving in the annular space 13 along the space defined by the annular space 13. Also, the stopper member 20 is fixed at a predetermined position by the external support member to locate the cable fixing member 10 at the center of the tower after the post 21 is inserted into the annular space 13, thereby preventing the cable fixing member 10 from being radially swung. Of course, the annular space 13 may be sized to be the same as the diameter of the cylinder 21 or slightly larger than the diameter of the cylinder 21 so as to allow the cylinder 21 to move within the annular space 13.

Thus, in the case where the stopper member 20 is fixedly attached to the external support member, when the cable fixing member 10 is twisted along with the cable, the cable fixing member 10 can only be rotated circumferentially relative to the stopper member 20 when twisted along with the cable because the stopper member 20 is restricted by the movement space formed by the annular gap 13. That is, the annular space 13 and the column body 21 together constitute a guide assembly by which the cable fixing member 10 and the stopper member 20 are relatively movably disposed. Therefore, by providing the limiting component 20, the horizontal swinging of the cable fixing component 10 can be limited, and the cable fixing component 10 is prevented from being damaged or the cable is prevented from being damaged due to friction or impact with surrounding accessories caused by radial swinging and deviation from the vertical center of the tower in the process of twisting the cable.

In addition, since the stopper 14 is provided in the annular space 13, the wall portion of the cylindrical body 21 comes into contact with the side surface of the stopper 14 during the rotation of the cable fixing member 10 relative to the stopper member 20 following the rotation of the cable, that is, during the movement of the cylindrical body 21 of the stopper member 20 along the trajectory formed by the annular space 13. The post 21 and the stop 14 are in a restraining relationship with one another. Since the column 21 is fixed by the external supporting member, the first fixing ring 11 will be stopped by the stopper 14 and will not rotate relative to the column 21 any more. And the stopper 14 extends along the circumferential direction of the first fixing ring 11 by a predetermined length so that the stopper 14 can form two restricting surfaces along both sides of the circumferential direction of the first fixing ring 11, respectively. Therefore, when the first fixing ring 11 is twisted in both clockwise and counterclockwise directions along with the cable, the two limiting surfaces of the stopper 14 are respectively in limit fit with the wall portion of the cylinder 21 serving as the abutting portion, so as to limit the rotation angle of the cable fixing member 10 relative to the cylinder 21, and limit the torsion angle of the first fixing ring 11 within a predetermined angle range (the predetermined angle range can empirically select the corresponding limit torsion angles in both directions (i.e., clockwise and counterclockwise) according to actual needs, and the limit torsion angles in both directions can be the same or different).

Therefore, the problems that the twisting amount of cables at saddle surfaces in a tower barrel is not easy to control, excessive twisting is easy to happen, and the cables are seriously bound, so that the cables cannot be well cooled, the over-temperature operation condition is easy to happen, and the service life of the cables is finally influenced can be solved.

In an alternative embodiment, the column 21 of the position-limiting member 20 is reserved with a predetermined length, since the cable may be displaced in the axial direction of the tower during twisting. When the cable is twisted to drive the cable fixing component 10 to move axially, the limiting component 20 can allow the cable fixing component 10 to move in a certain range along the axial direction of the tower under the condition that the cable fixing component 10 is ensured not to radially shake.

In an alternative embodiment, the cable fixing member 10 can be axially moved along the tower under the constraint of the column 21, since the column 21 is reserved with a predetermined length. In order to prevent the cable fixing member 10 from being disengaged from the cylindrical body 21 when moving axially along the tower, a catch 23 is provided at an end of the cylindrical body 21 remote from the connecting portion 22. In the present embodiment, the catch 23 is an annular flange formed protruding at the end of the column 21. By providing the annular flange, the cable fixing member 10 can be prevented from being separated from the restraint of the column body 21 during the axial movement of the tower, and the problem of collision or abrasion of surrounding components can be avoided. Therefore, the cable fixing member 10 can be always kept in the engaged state with the cable fixing member 10 and not be disengaged from each other.

In the above embodiment, the stopper is the stopper 14 provided in the annular space 13, but the embodiment of the present invention is not limited thereto. Referring to fig. 2, fig. 2 is a schematic structural view of a specific example of the stopper portion in the twisted cable protection device 1 according to an embodiment of the present invention. As shown in fig. 2, in an exemplary embodiment, the stopper is a stopper 15, the stopper 15 is located on one side in the axial direction of the first fixing ring 11 and the second fixing ring 12, and the stopper 15 is fixedly connected to one side end surface in the axial direction of the first fixing ring 11 and the second fixing ring 12 (the stopper 15 is shown to be located on the top end surface of the first fixing ring 11 and the second fixing ring 12). The stop 15 can thus also fixedly connect the first fixing ring 11 and the second fixing ring 12 together and at the same time can cooperate as a stop with a wall of the column 21 that moves in the annular gap 13, limiting the rotation of the first fixing ring 11 within a predetermined angular range. Of course, the stopper 15 may be disposed at the bottom of the first fixing ring 11 and the second fixing ring 12.

In the above embodiment, the retaining part 23 is an annular boss provided at one end of the column 21, but the embodiment of the present invention is not limited thereto. In other embodiments, the catch 23 can also include other shaped bosses or lugs, but the catch 23 can also include any structure that can cooperate with a side end surface of the cable fixing member 10 (i.e., the first and second fixing rings 11 and 12) to prevent the cable fixing member 10 from disengaging from the post 21.

In addition, in the above-described embodiment, the first fixing ring 11 and the second fixing ring 12 are fixedly connected by the stopper, that is, the stopper 14, but the embodiment of the present invention is not limited thereto. In other embodiments, the first fixing ring 11 and the second fixing ring 12 may be connected to each other by other connecting structures on the top or bottom surfaces thereof, as long as the movement of the column 21 in the annular gap 13 is not hindered and a stopper is provided at a predetermined position in the annular gap 13.

Fig. 3 is a schematic perspective view of a twisted cable protection device 2 according to another embodiment of the present invention; fig. 4 is a schematic top view of the twisted cable protection device 2 of fig. 3; 3 fig. 3 5 3 is 3 a 3 cross 3- 3 sectional 3 view 3 of 3 the 3 twisted 3 cable 3 protection 3 device 3 2 3 of 3 fig. 3 4 3 taken 3 along 3 plane 3 a 3- 3 a 3. 3 Referring to fig. 3 to 5, the twisting protector 2 in this embodiment also includes a cable fixing member 10 and a limiting member 20, and the cable fixing member 10 and the limiting member 20 cooperate with each other to achieve the purposes of keeping the cable at the center of the tower and limiting the twisting angle of the cable.

Exemplarily, in the present embodiment, the cable fixing member 10 includes only the first fixing ring 11, and the guide channel is a first notch groove 16 provided on an outer circumferential surface of the first fixing ring 11. The first notch groove 16 is continuously formed on the outer circumferential surface of the first fixing ring 11 to constitute a ring shape. And the opening of the first notch groove 16 is sized to gradually increase from the outside to the inside in the radial direction of the first fixing ring 11 (as shown in fig. 5). Correspondingly, the engaging part is a first convex block 24 arranged on the outer wall surface of the column 21 of the limiting part 20. The first convex engagement body 24 is convexly formed on the outer wall surface of the cylinder 21, and the first convex engagement body 24 is adapted to the shape of the first concave groove 16, that is, the dimension of the first convex engagement body 24 in the longitudinal direction of the cylinder 21 is set to gradually increase in the direction facing away from the cylinder 21 along the outer wall surface of the cylinder 21 (as shown in fig. 5).

Thus, the first convex clamping body 24 can be clamped in the first concave clamping groove 16 and move along the track defined by the first concave clamping groove 16, that is, the first convex clamping body 24 can be in sliding fit with the first concave clamping groove 16 in the first concave clamping groove 16, so that the cable fixing part 10 can rotate relative to the limiting part 20 and keep the joint state with the limiting part 20 all the time when the cable fixing part rotates along with the cable fixed by the cable fixing part. The guide assembly, which is constructed by the first female snap groove 16 and the first male snap body 24 being fitted to each other, thus enables the cable fixing member 10 and the restricting member 20 to be restricted to be movable relative to each other without being separated from the connection. Thus, the cable fixing member 10 can be constrained by the stop member 20 to rotate around the center of the tower without wobbling when the stop member 20 is fixed to the outer support member.

In an alternative embodiment, when the cable has a small amount of slack left during the laying process, the cable may be displaced in the axial direction of the tower during the twisting process. The position-limiting member 20 can now be configured in a telescopic configuration, since the first groove 16 and the first projection 24, which cooperate with each other, already limit the relative position of the cable fixing member 10 and the position-limiting member 20 to each other in the axial direction of the tower.

Illustratively, as shown in fig. 3 to 5, in the present embodiment, the column body 21 of the position limiting component 20 includes a first portion 21a and a second portion 21b, and the first portion 21a is sleeved outside the second portion 21b from one side end of the second portion 21b, so that the second portion 21b can extend or retract relative to the first portion 21 a. And the first and second portions 21a and 21b are provided with a snap structure corresponding to each other to prevent the first and second portions from being disconnected from each other. Therefore, when the cable is twisted to drive the cable fixing component 10 to move along the axial direction of the tower, the limiting component 20 can ensure that the cable fixing component 10 is always located at the center of the tower, and can allow the cable fixing component 10 to move in a certain range along the axial direction of the tower through a telescopic structure.

As shown in fig. 3 to 5, in the present embodiment, the stopper is a stopper 18 provided on the outer peripheral surface of the first fixing ring 11, and the stopper 18 is provided on the side of the first fixing ring 11 close to the connecting portion 22 of the stopper member 20. And the stopper 18 extends along the circumferential direction of the first fixing ring 11 by a predetermined length so that the stopper 18 forms a restriction surface on both sides along the circumferential direction of the first fixing ring 11. The abutting portions are two side walls of the first card body 24 provided on the cylinder 21 in this embodiment. Therefore, when the first fixing ring 11 is twisted in both clockwise and counterclockwise directions following the cable, the two restricting surfaces of the stopper 18 are engaged with the two corresponding side walls of the first boss body 24, respectively, so that the rotation angle of the first fixing ring 11 can be restricted, and the twist angle of the first fixing ring 11 can be restricted within a predetermined angle range. Therefore, the influence on the use safety and the service life of the cable caused by the excessive twisting of the cable can be avoided.

Of course, the embodiment of the present invention does not limit the protrusion dimension of the stopper 18 along the radial direction of the first fixing ring 11, and the stopper may be matched with the outer wall of the cylinder 21 (i.e. the second portion 21b shown in the figure) in a limiting manner after the first fixing ring 11 rotates a certain angle relative to the cylinder 21, so that the first fixing ring 11 stops at the set limit torsion angle.

Fig. 6 is a schematic perspective view of a twisted cable protection device 3 according to another embodiment of the present invention. In this embodiment, as shown in FIG. 6, the torsion cable protection device 3 also includes a cable fixing member 10 and a position limiting member 20, and the cable fixing member 10 and the position limiting member 20 cooperate with each other to keep the cable at the center of the tower and to limit the torsion angle of the cable.

The twisted cable protector 3 in this embodiment has substantially the same structure as the twisted cable protector 2 in the above-described embodiment, except that the stopper in the twisted cable protector 3 is a stopper 19 provided in the first notch groove 16. Of course, in the present embodiment, the stopper 19 is of an integral structure with the first fixing ring 11, and the outer peripheral surface of the stopper 19 is substantially flush with the outer peripheral surface of the first fixing ring 11. Likewise, the stopper 19 forms two restriction surfaces in the first notch groove 16 in the circumferential direction of the first fixing ring 11. In the present embodiment, the abutting portions are two side walls of the first card body 24. Therefore, the two limiting surfaces of the first concave groove 16 are respectively in limit fit with the two side walls of the first convex clamping body 24 moving in the first concave groove 16, so that the rotation angle of the first fixing ring 11 relative to the column body 21, namely the rotation angle of the cable fixing part 10, can be limited.

Fig. 7 is a schematic cross-sectional view of a twisted cable protection device 4 according to another embodiment of the present invention. 3 fig. 3 7 3 is 3 a 3 schematic 3 structural 3 view 3 of 3 the 3 twist 3 cable 3 protector 3 4 3 taken 3 along 3 the 3 plane 3 a 3- 3 a 3 of 3 the 3 plan 3 view 3 of 3 the 3 twist 3 cable 3 protector 3 2 3 shown 3 in 3 fig. 3 4 3. 3 In this embodiment, the twisting protector 4 is similar to the twisting protector 2 of the above-mentioned embodiment, and also includes a cable fixing member 10 and a position limiting member 20, and the cable fixing member 10 and the position limiting member 20 cooperate with each other to keep the cable at the center of the tower and limit the twisting angle of the cable.

The twisted cable protector 4 of this embodiment is substantially the same as the twisted cable protector 2 of the above embodiment, except that in this embodiment, the guide channel of the guide member is the second female locking groove 25, and the mating part is the second male locking body 17. The second notch 25 is protrudingly provided on the outer wall surface of the column body 21 of the stopper member 20, and an opening portion of the second notch 25 has a pair of flanges (shown in fig. 7) extending toward each other formed in the longitudinal direction of the column body 21 (the axial direction of the first fixing ring 11). The second convex card body 17 is continuously formed on the outer circumferential surface of the first fixing ring 11 to constitute a ring shape. And the second convex card body 17 is adapted to the shape of the second concave slot 25, that is, the end of the second convex card body 17 far away from the first fixing ring 11 is respectively flanged towards two sides along the axial direction of the first fixing ring 11 (as shown in fig. 7).

Therefore, the second female slot 25 can be inserted and clamped outside the annular second male card body 17 and move along the track defined by the second male card body 17, that is, the second female slot 25 can be in sliding fit with the second male card body 17 outside the second male card body 17. So that the cable fixing member 10 can rotate relative to the fixed restricting member 20 and always maintain the engaged state with the restricting member 20 when it is twisted following the cable fixed thereto. The guide assembly, which is constructed by the second boss body 17 and the second notch groove 25 being engaged with each other, thus enables the cable fixing member 10 and the stopper member 20 to be restricted to be movable relative to each other without being separated from the connection. Thus, with the stop member 20 secured to the outer support member, the cable fixing member 10 can be constrained by the stop member 20 to rotate circumferentially about the center of the tower without radial play.

In an alternative embodiment, the stop portion may further include two stoppers 14 (not shown), but may be regarded as dividing one stopper 14 into two parts in the above-mentioned embodiment. Two stoppers 14 are provided in the cable fixing member 10 spaced from each other in the circumferential direction of the cylinder 21. The arrangement of the two stoppers 14 in the cable fixing member 10 is the same as that of one stopper 14 in the above-described embodiment, and therefore, the description thereof is omitted. The two stoppers 14 engage the wall portion of the column body 21 with two side surfaces, which are distant from each other in the circumferential direction of the first fixing ring 11, as two restricting surfaces. Therefore, the positions of the two stoppers 14 can be correspondingly set according to the allowable limit torsion angle of the cable, and the problem that when the torsion angle of the cable needs to be set to a certain range, one stopper 14 extends to a long size along the circumferential direction of the first fixing ring 11, so that the weight of the cable twisting protection device is too heavy and the cable is overloaded is solved.

Therefore, when the cable fixing member 10 rotates relative to the stopper member 20, the rotation angle of the cable fixing member 10 relative to the stopper member 20 can be limited within a certain range by the stopper cooperation between the wall portions of the cylindrical body 21 (or the two side walls of the first boss body 24 on the cylindrical body 21) and the stopper surfaces provided on the two sides of the two stoppers 14 in the circumferential direction of the first fixing ring 11. Therefore, the twisting angle of the cable can be further limited by the cable fixing part 10, and the cable is prevented from being excessively twisted, so that the use safety and the service life of the cable are prevented from being affected.

In addition, in some embodiments, it is also possible to arrange two stops 14 in the cable fixing part 10 in a position-adjustable manner. For example, when two stoppers 14 are included in the cable twisting protector 1, the two stoppers 14 may be detachably connected to the first fixing ring 11 and the second fixing ring 12 by bolt assemblies, respectively. So that the two stoppers 14 are detachably attached to the cable fixing member 10 at a plurality of preset positions, and thus the installation positions of the two stoppers 14 in the annular space 13 can be adjusted according to the limit torsion angle set for the cable.

In the above embodiment, the main body of the limiting member 20 is a cylinder, but the embodiment of the present invention is not limited thereto. In other embodiments, the column 21 of the position-limiting member 20 may be replaced by a plate-like structure or other support capable of cooperating with the cable fixing member 10 in a corresponding manner.

The stopping portion in the above embodiment is not limited to the stopper 14, and it is also possible that the stopping portion is a pin shaft that is simultaneously inserted into the first fixing ring 11 and the second fixing ring 12.

Of course, in the above embodiment, the first fixing ring 11 and the second fixing ring 12 have the same thickness and height, which may facilitate the manufacture of the twisted cable protection device 1, but the embodiment of the present invention is not limited thereto. In other embodiments, the thickness and height of the first fixing ring 11 and the second fixing ring 12 may also be different, and at this time, the length of the column 21 may be set with reference to the longer one of the first fixing ring 11 and the second fixing ring 12, and the retaining portion 23 disposed at one end of the column 21 is also engaged with the longer one of the first fixing ring 11 and the second fixing ring 12.

In addition, in the above-described embodiment, the first fixing ring 11 and the second fixing ring 12 are both circular rings having a predetermined height, that is, the cross section of the first fixing ring 11 and the second fixing ring 12 cut along the axial direction is rectangular, but the embodiment of the present invention is not limited thereto. In other embodiments, the first fixing ring 11 and the second fixing ring 12 may also be ring-shaped structures with a circular cross section taken along the axial direction thereof. Thus, the frictional force between the cylinder 21 and the first and second fixing rings 11 and 12 can be effectively reduced.

In the above embodiments, the engaging portion of the guiding component and the guiding channel are engaged with each other in a sliding contact manner, but the embodiments of the present invention are not limited thereto. In other embodiments, the mating portion and the guide channel may also mate with each other in rolling contact. For example, a roller may be provided on one of the fitting portion and the guide passage.

According to the utility model discloses an embodiment still provides a wind generating set, and this wind generating set can include the cable protection device that turns round that provides in above-mentioned each embodiment, so have with turn round the same advantage of cable protection device, the event is no longer repeated.

The present invention may be embodied in other specific forms without departing from its spirit or essential characteristics. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Also, different features that are present in different embodiments may be combined to advantage. Other variations to the disclosed embodiments can be understood and effected by those skilled in the art upon studying the drawings, the specification, and the claims.

Claims

1. A twisted cable protection device, comprising:

a cable fixing member (10) having a first fixing ring (11) and a stopper portion provided outside the first fixing ring (11), wherein a cable passing hole (11a) is formed inside the first fixing ring (11), and a cable passing through the cable passing hole (11a) is fixedly connected to the first fixing ring (11); and

a position-limiting part (20), the position-limiting part (20) and the cable fixing part (10) being provided with guide assemblies corresponding to each other, the position-limiting part (20) and the cable fixing part (10) being provided relatively movably through the guide assemblies, the position-limiting part (20) including a connecting portion (22) and an abutting portion connected to each other, the connecting portion (22) being fixedly connected to an external support member, the abutting portion and the stopper portion being engaged with each other to limit a rotation angle of the first fixing ring (11).

2. The twisting protection device according to claim 1, wherein the guide assembly comprises a guide channel provided at one of the cable fixing part (10) and the stopper part (20) and an engagement portion provided at the other of the cable fixing part (10) and the stopper part (20), the engagement portion being matched with the guide channel.

3. The twist-cord protection device according to claim 2, wherein said cord securing member (10) further comprises a second securing ring (12), said second securing ring (12) being concentrically fitted over said first securing ring (11) and fixedly connected to said first securing ring (11),

the guide channel is an annular gap (13) formed between the first fixing ring (11) and the second fixing ring (12), the matching part is a column body (21) arranged along the axial extension of the first fixing ring (11), and the column body (21) extends into the annular gap (13) and can move in the annular gap (13).

4. The twisting cable protection device according to claim 3, wherein the column body (21) penetrates the annular space (13) and has a predetermined length, and the stopper member (20) further includes a catching portion (23), the catching portion (23) being provided on a side of the column body (21) away from the connecting portion (22) so as to prevent the cable fixing member (10) from being detached from the stopper member (20) by being in abutting engagement with the catching portion (23) when the first fixing ring (11) and the second fixing ring (12) are moved in the axial direction relative to the column body (21).

5. The cable twisting protection device according to claim 2, wherein the guide channel is an annular first female snap groove (16) provided on an outer peripheral surface of the first fixing ring (11), the engagement portion is a first male snap body (24) provided on the limiting member (20) and adapted to the shape of the first female snap groove (16), and the first male snap body (24) can be snapped into the first female snap groove (16) and moves along a track defined by the first female snap groove (16).

6. The cable twisting protection device according to claim 2, wherein the guide channel is a second female snap groove (25) provided on an outer circumferential surface of the stopper member (20), and the engagement portion is a second annular male snap body (17) provided on an outer circumferential surface of the first fixing ring (11) and having a shape corresponding to the second female snap groove (25), and the second male snap body (17) can be snapped into the second female snap groove (25) and move along a trajectory defined by the second female snap groove (25).

7. A twisted cable protection device according to claim 5 or 6, wherein the limiting member (20) is of a telescopic construction.

8. A twisted cable protection device according to claim 3 or 4, wherein the stop is a stopper (14, 15, 18, 19) arranged outside the first fixing ring (11), the abutment is a wall of the column (21), and the stopper (14, 15, 18, 19) is capable of abutting engagement with the wall of the column (21) to limit the rotation angle of the first fixing ring (11).

9. The twisting cable protection device according to claim 8, wherein the stopper portion includes two stoppers (14, 15, 18, 19), the two stoppers (14, 15, 18, 19) being provided spaced apart from each other in a circumferential direction of the first fixing ring (11); or,

the limiting part (20) comprises two columns (21), and the two columns (21) are arranged at intervals along the circumferential direction of the first fixing ring (11).

10. A twisted cable protection device according to claim 9, wherein the position of the stop (14, 15, 18, 19) is adjustable in the circumferential direction of the first fixing ring (11).

11. A wind park comprising a twisted cable protection device according to any one of claims 1 to 10.