CN113700621A

CN113700621A - Cable support used inside wind power tower

Info

Publication number: CN113700621A
Application number: CN202110969408.XA
Authority: CN
Inventors: 刘义鑫; 尹明; 宋恭杰; 杨淑超; 罗勇水; 邓峰
Original assignee: Zhejiang Windey Co Ltd
Current assignee: Zhejiang Windey Co Ltd
Priority date: 2021-08-23
Filing date: 2021-08-23
Publication date: 2021-11-26
Anticipated expiration: 2041-08-23
Also published as: CN113700621B

Abstract

The invention discloses a cable support used in a wind power tower, aiming at solving the problem that the existing small wind generators are difficult to expand. The invention includes two bracket bodies arranged up and down. The bracket body includes a support arm, a cycloidal saddle and a cable clamp assembly. The cable clamp assembly includes a first clamping piece, a second clamping piece and a clamping block. The first clamping piece A clamping block is arranged between the sheet and the second clamping sheet, and a plurality of grooves are arranged on the clamping block. The structure can be placed in multi-angle positions on the inner wall of the wind power tower, simplifying installation requirements, and can also adjust the locking and opening of the cable by the bracket body on the ground, which is convenient for maintenance and maintains reliable positioning of the cable.

Description

Cable support used inside wind power tower

Technical Field

The invention relates to the technical field of wind power generation, in particular to a cable support used in a wind power tower.

Background

For some wind generating sets which operate for years, the original wind generating sets need to be modified and upgraded due to some accidents or capacity expansion requirements, and the reconstruction cost of the wind generating sets can be reduced or the generating efficiency of the wind generating sets can be improved. In the process of reforming the wind generating set, the reforming not only comprises reforming the main machine, but also comprises the step of reforming the height of the tower frame to the greatest extent, and correspondingly, accessories in the tower frame, such as a cable bridge frame, a ladder stand and the like, are reformed according to the original set.

The existing cable support component mainly comprises two large cable supports which are arranged up and down and used for supporting large cables and two small cable supports which are arranged horizontally and used for adjusting small cables such as communication cables, the diameter of some old wind turbine generator tower cylinders is small, the positions of internal accessories in the tower cylinders are relatively small, especially, the platform is not provided with enough space, so that the cable support component can be designed to play the role of the cable support at the same time, and the structure combined with other functions is very important.

The installation position of the existing tower cable support assembly needs to have fixed angle requirements, and a special tool is needed for installation.

Therefore, the invention aims to realize a cable support for the interior of a wind power tower, which can support installation at various angles.

Disclosure of Invention

The invention overcomes the defect that the existing small wind turbine generator set is difficult to expand, provides the cable support for the interior of the wind power tower, can simplify the installation requirements, and supports the cable support for the interior of the wind power tower which is installed at various angles.

In order to solve the technical problems, the invention adopts the following technical scheme:

the utility model provides a be used for inside cable support of wind power tower, includes two support bodies that set up from top to bottom, and the support body includes that support arm, cycloid saddle and cable press from both sides the subassembly, and the cable presss from both sides the subassembly and includes that first clamp piece, second press from both sides tight piece and press from both sides tight piece, and first clamp piece and second press from both sides and are equipped with between the tight piece and press from both sides tight piece, press from both sides to be equipped with a plurality of recesses on the tight piece.

One part of the multi-strand cable hung down from the motor unit above passes through the support body above, and the other part passes through the support body below, so that the load on the supporting arm is reduced, the support body has larger strength allowance, and the overall reliability is improved. Certain allowance is reserved between the unit and the support body through cables, from the viewpoint of later maintenance, the reserved allowance is close, and radians formed by all strands of cables are close. The first clamping piece and the second clamping piece limit the clamping block, and can directly clamp and provide certain pretightening force so as to ensure the positioning of the cable, thereby avoiding the change of reserved allowance and causing the plastic deformation between wires to generate unnecessary stress; the following protocol may also be employed; it can also be used only to limit the position of the multi-strand cable and avoid it from being wound together. The groove and the cable are positioned in a one-to-one manner. Thereby avoiding interference. The structure can simplify the installation requirement, can install on the inner wall everywhere in the fan tower, supports the installation of multi-angle.

Preferably, the groove is in a V shape, and the bottom of the V shape is a circular arc. The cross section of the cable is generally circular, two side walls of the V shape and the first clamping piece position the cable to form three point positions to complete the positioning of the cable. The inner wall of the groove is also provided with a friction layer for improving friction force.

Preferably, the groove of the clamping block faces the first clamping piece, and a gasket is arranged between the clamping block and the first clamping piece. The structure improves the friction force to the cable.

Preferably, the number of the clamping blocks between the first clamping piece and the second clamping piece of the lower bracket body is two. The two clamping blocks have different functions, one clamping block is used for positioning cables for power transmission, and the other clamping block is used for positioning thinner control or other cables for power transmission.

Preferably, the cycloid saddle is provided with lightening holes. The structure reduces the weight of the bracket body.

Preferably, the protective cushion layer is sleeved outside the cycloid saddle. Said construction improves the friction between the cycloid saddle and the cable.

Preferably, a guide rod is arranged among the first clamping piece, the second clamping piece and the clamping block, and two ends of the guide rod are provided with limiting bolts.

The structure plays limiting role, and the distance between the first clamping piece and the second clamping piece can be adjusted by adjusting the positions of the limiting bolts at the two ends of the guide rod, so that the clamping blocks are limited. The limiting bolt can also prevent the first clamping piece and the second clamping piece from being separated.

Preferably, the rocking bar mechanism comprises a push rod for driving the clamping block to move, a first guide groove of the push rod, a rocking bar body with the middle part hinged to the second clamping piece and an intermediate rod for connecting the rocking bar body and the push rod, the rocking bar mechanism comprises a cylindrical cam with an arc-shaped groove on the outer wall and a pulley body, the cylindrical cam and the pulley body are coaxial and integrally formed, a pull rope is wound on the periphery of the pulley body, one end of the rocking bar body is connected to the arc-shaped groove of the cylindrical cam in a sliding mode, the other end of the rocking bar body is provided with a waist groove, a second guide groove is formed in the second clamping piece and perpendicular to the first guide groove, and one end of the intermediate rod is hinged between the waist groove and the second guide groove.

And adjusting the distance between the first clamping piece and the second clamping piece so that a gap for the clamping block to axially slide is formed between the first clamping piece and the second clamping piece. The second clamping piece is provided with an opening or a groove for the push rod to pass through, and the first guide groove is arranged on the second clamping piece. When the cylindrical cam rotates, the rocker body moves between the left position and the right position of the cylindrical cam, and swings through a hinge point which is arranged in the middle of the rocker and hinged to the second clamping piece. The waist groove at the other end of the swing rod is matched with the second guide groove to realize that one end of the intermediate rod moves along the left-right direction, and the intermediate rod is driven to pull the push rod back and forth. Because the arc-shaped grooves on the cylindrical cam are not connected end to end, two poles exist, and the two poles respectively correspond to the states of completely opening and completely closing the cable clamp assembly. The mode of relaying the oscillating bar body is adopted to enlarge the displacement distance of the left-right transverse movement through the oscillating bar body, so that the requirement of push rod feeding is met.

The purpose of the arrangement of the structure is to switch between two states of reliable locking and easy pulling of the cable. Because the wind generating set needs the initiative just to the wind direction, so, the motor group can have certain swing, consequently, the support body need provide the cable enough tight the clamp avoid the cable to disappear at the surplus of support body upper end under the long-term motion for the weight of cable is born by cable self. But also causes inconvenience in adjustment if the cable is completely locked.

Through setting up the structure, can be through the light first tight piece of change of stay cord of below and press from both sides the position relation between the tight piece, compromise and press from both sides tight and relax two kinds of states, need not ascend a height and adjust.

Preferably, the periphery of the pulley body is oval, and the two ends of the pulley body in the long axis direction are at the highest point positions and respectively correspond to the complete opening and closing state of the cable clamp assembly.

The structure is matched with the arc-shaped grooves from head to tail, so that obvious hand feeling feedback indication is given when the pull rope is pulled. The device can be simplified to a state of pulling the head to one state and another state of pulling the head to the other direction.

Preferably, the pull rope is a rope body connected end to end, a tensioning mechanism is arranged at the bottom of the rope body, and the tensioning mechanism limits the rope body to drive the composite pulley to move. The tensioning device prevents the pull rope from being separated from the pulley body.

Preferably, the grooves are grouped in groups of three, with adjacent groups being spaced further apart than adjacent grooves within a group. A triplet of grooves is used for easy U, V, W triplex cables. Spacing between adjacent groups is used to avoid electromagnetic interference.

Compared with the prior art, the invention has the beneficial effects that: (1) the wind power generation tower can be placed at a multi-angle position on the inner wall of the wind power generation tower, so that the installation requirement is simplified; (2) the device can adjust the locking and the unlocking of the bracket body to the cable on the ground, and is convenient for maintaining and keeping the reliable positioning of the cable.

Drawings

FIG. 1 is an overall operational schematic of the present invention;

FIG. 2 is a perspective view of two stent bodies of the present invention;

FIG. 3 is a front view of the cable clamp assembly of the present invention;

FIG. 4 is an exploded view of the cable clamp assembly of the present invention;

FIG. 5 is a schematic view of embodiment 2 of the present invention;

FIG. 6 is a schematic view of a pulley body in embodiment 2 of the invention;

in the figure:

the device comprises a cable 1, a supporting arm 2, a cycloidal saddle 3, a first clamping piece 4, a second clamping piece 5, a clamping block 6, a groove 7, a gasket 8, a lightening hole 9, a protective cushion layer 10, a guide rod 11, a limiting bolt 12, a push rod 13, a first guide groove 14, a rocker body 15, an intermediate rod 16, an arc-shaped groove 17, a cylindrical cam 18, a pulley body 19, a pull rope 20, a waist groove 21 and a second guide groove 22.

Detailed Description

The present disclosure is further described with reference to the following drawings and examples.

It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

In the present disclosure, terms such as "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "side", "bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only relational terms determined for convenience in describing structural relationships of the parts or elements of the present disclosure, and do not refer to any parts or elements of the present disclosure, and are not to be construed as limiting the present disclosure.

In the present disclosure, terms such as "fixedly connected", "connected", and the like are to be understood in a broad sense, and mean either a fixed connection or an integrally connected or detachable connection; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present disclosure can be determined on a case-by-case basis by persons skilled in the relevant art or technicians, and are not to be construed as limitations of the present disclosure.

Example 1:

the utility model provides a be used for inside cable support of wind power tower, as shown in fig. 1, 2, includes two support bodies that set up from top to bottom, and the support body includes support arm, cycloid saddle 3 and cable clamp subassembly, is equipped with lightening hole 9 on the cycloid saddle 3. The structure reduces the weight of the bracket body. The protective cushion layer 10 is sleeved outside the cycloidal saddle 3. Said construction improves the friction between the cycloid saddle 3 and the support arm 2.

As shown in fig. 3 and 4, the cable clamp assembly includes a first clamping piece 4, a second clamping piece 5 and a clamping block 6, the clamping block 6 is arranged between the first clamping piece 4 and the second clamping piece 5, a plurality of grooves 7 are arranged on the clamping block 6, the grooves 7 are V-shaped, and the bottom of the V-shape is a circular arc. The first clamping piece 4 and the second clamping piece 5 are L-shaped angle steels. Wherein the first clamping plate 4 has connecting plates on both sides for connecting the cycloid saddle 3. The cross section of the supporting arm 2 is generally circular, two side walls of the V shape and the first clamping sheet 4 position the supporting arm 2 to form three point positions to complete the positioning of the supporting arm 2. The inner walls of the grooves 7 also have a friction layer which increases the friction. The groove 7 of the clamping block 6 faces the first clamping piece 4, and a spacer 8 is arranged between the clamping block 6 and the first clamping piece 4. The structure improves the friction force against the support arm 2. The number of clamping blocks 6 between the first clamping piece 4 and the second clamping piece 5 of the lower bracket body is two. The two clamping blocks 6 have different functions, one clamping block 6 being used for positioning cables for power transmission, and the other clamping block 6 being used for positioning the support arm 2 for finer control or other purposes. A guide rod 11 is arranged among the first clamping piece 4, the second clamping piece 5 and the clamping block 6, and two ends of the guide rod 11 are provided with limiting bolts 12. The structure plays limiting role, and the distance between the first clamping piece 4 and the second clamping piece 5 can be adjusted by adjusting the positions of the limiting bolts 12 at the two ends of the guide rod 11, so that the limiting of the clamping block 6 is realized. The limit bolt 12 can prevent the first clamping piece 4 and the second clamping piece 5 from being separated.

One part of the multi-strand cable hung down from the motor unit above passes through the support body above, and the other part passes through the support body below, so that the load on the supporting arm is reduced, the support body has larger strength allowance, and the overall reliability is improved. The support arm 2 passes through the hole that recess 7 and first clamp piece 4 formed from the below, then the surface of laminating cycloid saddle 3, and stranded support arm 2 receives the spacing of cable clamp subassembly, and parallel arrangement hangs down from the other end of cycloid saddle 3, because the friction of protection bed course 10 and cable casing, certain resistance need be overcome to support arm 2 through the support body.

Certain surplus is left between unit and support body to support arm 2, and from the angle of later maintenance, the surplus that needs to be left is close, and the radian that each thigh of support arm 2 formed is close, can reduce like this and produce torsion to the support body. First, the second presss from both sides tight piece 5 and carries on spacingly to pressing from both sides tight piece 6, and the accessible directly presss from both sides tightly and provides certain pretightning force to guarantee the location to support arm 2, thereby avoid keeping the surplus change that produces, lead to plastic deformation between the wire rod to produce unnecessary stress. The groove 7 and the supporting arm 2 are positioned in a one-to-one mode. Thereby avoiding interference. The grooves 7 are arranged in groups of three, and the interval between adjacent groups is larger than the interval between adjacent grooves 7 in the groups. The triplet of grooves 7 is used for easy U, V, W three-phase cables. Spacing between adjacent groups is used to avoid electromagnetic interference.

The structure can simplify the installation requirement, can install on the inner wall everywhere in the fan tower, supports the installation of multi-angle.

Example 2:

example 2 differs from example 1 in that: the distance between the first clamping piece 4 and the clamping block 6 is variable:

the concrete implementation is as follows: as shown in fig. 5, the positional relationship is not strictly checked and is only illustrated. The composite pulley comprises a push rod 13 for driving the clamping block 6 to move, a first guide groove 14 for adapting to the push rod 13, a rocker body 15 with the middle part hinged on the second clamping piece 5 and a middle rod 16 for connecting the rocker body 15 with the push rod 13, the composite pulley comprises a cylindrical cam 18 with an arc-shaped groove 17 on the outer wall and a pulley body 19, the cylindrical cam 18 and the pulley body 19 are coaxial and integrally formed, a pull rope 20 is wound on the periphery of the pulley body 19, one end of the rocker body 15 is connected in the arc-shaped groove 17 of the cylindrical cam 18 in a sliding mode, the other end of the rocker body 15 is provided with a waist groove 21, the second clamping piece 5 is provided with a second guide groove 22 perpendicular to the first guide groove 14, and one end of the middle rod 16 is hinged between the waist groove 21 and the second guide groove 22.

The distance between the first clamping piece 4 and the second clamping piece 5 is adjusted so that a gap is provided between the first clamping piece 4 and the second clamping piece 5 for the clamping block 6 to slide axially. The end of the push rod 13 is fixedly connected with the clamping block 6. The second clamping piece 5 has an opening or slot for the passage of the push rod 13, and the first guide groove 14 is provided in the second clamping piece 5. When the cylindrical cam 18 rotates, the rocker body 15 moves between the left and right positions of the cylindrical cam 18, and swings through a hinge point at the middle of the rocker, which is hinged to the second clamping piece 5. The waist groove 21 at the other end of the swing rod and the second guide groove 22 are mutually matched to realize that one end of the intermediate rod 16 moves along the left-right direction and drives the intermediate rod 16 to pull the push rod 13 back and forth. Because the arc-shaped grooves 17 on the cylindrical cam 18 are not end-to-end, there are two poles, which correspond to the fully open and fully closed states of the cable clamp assembly, respectively. The mode of the relay of the swing rod body is adopted to enlarge the displacement distance of the left-right transverse movement through the swing rod body and adapt to the feeding requirement of the push rod 13.

The purpose of the arrangement of the structure is to switch between two states, namely to achieve reliable locking and easy pulling of the support arm 2. Because wind generating set need be active just to the wind direction, so, the motor generator system has certain swing, consequently, the support body need provide to support arm 2 enough press from both sides tightly avoid long-term motion under the surplus disappearance of support arm 2 in the support body upper end for the weight of support arm 2 is born by support arm 2 self. But also causes problems of inconvenient adjustment if the support arm 2 is completely locked.

Through setting up the structure, can be through the easy position relation that changes between first clamp plate 4 and the clamp piece 6 of stay cord 20 of below, compromise and press from both sides tight and relax two kinds of states, need not ascend a height and adjust.

As shown in fig. 6, the outer circumference of the pulley body 19 is oval, and both ends of the pulley body 19 along the long axis direction are at the highest point positions and respectively correspond to the completely opened and closed state of the cable clamp assembly.

The structure is matched with the arc-shaped grooves 17 from head to tail, so that obvious hand feeling feedback indication is given when the pull rope 20 is pulled. The device can be simplified to a state of pulling the head to one state and another state of pulling the head to the other direction. The pull rope 20 is a rope body connected end to end, and a tensioning mechanism is arranged at the bottom of the rope body and limits the rope body to drive the composite pulley to move. The tensioning device prevents the pull cord 20 from disengaging from the pulley body 19.

The above-described embodiments are merely preferred embodiments of the present invention, which is not intended to be limiting in any way, and other variations and modifications are possible without departing from the scope of the invention as set forth in the appended claims.

Claims

1. The utility model provides a be used for inside cable support of wind power tower, characterized by, including two support bodies that set up from top to bottom, the support body includes that support arm, cycloid saddle and cable press from both sides the subassembly, and the cable presss from both sides the subassembly and includes that first clamp piece, second press from both sides tight piece and press from both sides tight piece, and first clamp piece and second press from both sides and are equipped with between the tight piece and press from both sides tight piece, it is equipped with a plurality of recesses to press from both sides to be equipped with on the tight piece.

2. The cable holder for the interior of the wind power tower as claimed in claim 1, wherein the groove is "V" shaped, and the bottom of the "V" shape is a circular arc.

3. The cable holder for the interior of the wind tower according to claim 1, wherein the groove of the clamping block faces the first clamping piece, and a gasket is disposed between the clamping block and the first clamping piece.

4. The wind tower inner cable holder according to claim 3, wherein the number of the clamping blocks between the first clamping piece and the second clamping piece of the lower holder body is two.

5. The cable holder for the interior of a wind power tower as claimed in claim 1, wherein the cycloid saddle is provided with lightening holes.

6. The cable holder for the interior of a wind tower according to any one of claims 1 to 5, wherein the outer jacket of the cycloidal saddle is provided with a protective cushion.

7. The cable holder for the interior of the wind power tower as claimed in claim 1, wherein a guide rod is arranged between the first clamping piece, the second clamping piece and the clamping block, and two ends of the guide rod are provided with limiting bolts.

8. The cable support used inside the wind power tower according to claim 7, further comprising a composite pulley and a rocker mechanism, wherein the rocker mechanism comprises a push rod for driving the clamping block to move, a first guide groove adapted to the push rod, a rocker body with the middle part hinged on the second clamping piece, and an intermediate rod for connecting the rocker body and the push rod, the composite pulley comprises a cylindrical cam with an arc-shaped groove on the outer wall and a pulley body, the cylindrical cam and the pulley body are coaxial and integrally formed, a pull rope is wound around the periphery of the pulley body, one end of the rocker body is slidably connected in the arc-shaped groove of the cylindrical cam, the other end of the rocker body is provided with a waist groove, a second guide groove is arranged on the second clamping piece perpendicularly to the first guide groove, and one end of the intermediate rod is hinged between the waist groove and the second guide groove.

9. The cable holder used in the wind power tower according to claim 8, wherein the outer circumference of the pulley body is oval, and the two ends of the pulley body along the long axis direction are at the highest point positions and respectively correspond to the fully opened and closed state of the cable clamp assembly.

10. The cable holder as claimed in claim 8, wherein the pull rope is a rope body connected end to end, and the bottom of the rope body is provided with a tensioning mechanism for limiting the movement of the composite pulley driven by the rope body.