A fixing structure for improving the service life of busbar

Abstract

The present invention discloses a fixing structure for improving the service life of a busbar, comprising a support frame, a cross arm and a guide column, wherein the support frame is used to be fixed on a mounting platform, and the mounting platform can be, for example, the inner wall of a wind power tower, the cross arm is located above the support frame, and a plurality of fixing members for fixing the busbar are arranged on the cross arm, the axial direction of the guide column is parallel to the length direction of the busbar, a first through hole is arranged on the cross arm, one end of the guide column is fixed on the support frame, and the other end of the guide column passes through the first through hole to connect the cross arm and the support frame, wherein there is a force between the guide column and the inner wall of the first through hole, and the force makes the cross arm statically fixed on the guide column, and when the cross arm is acted upon by an external force and the external force is sufficient to overcome the force, the cross arm can slide along the guide column, and through the above manner, the fixing member can move with the movement of the busbar when the busbar expands and contracts, thereby preventing the outer layer of the busbar from being torn and improving the service life of the busbar.

Description

Technical Field

[0001] The invention relates to the technical field of busbar installation, and in particular to a fixing structure for improving the service life of a busbar. Background Art

[0002] The hollow tower of the wind turbine generator set is equipped with an energy transmission device such as a busbar. The upper end of the busbar is connected to the generator output twisted cable, and the lower end is connected to the converter cabinet at the bottom of the tower. The function of the busbar is to transmit the electric energy generated by the generator to the converter cabinet, and finally enter the wind farm booster station and be connected to the power grid. The busbar is generally fixed in the tower by a supporting structure. The common supporting structure generally includes a base and a clamp fixed on the base. The clamp is used to clamp the busbar. The busbar will expand and contract due to different environments or different climates, thereby moving. In order to adapt to the thermal expansion and contraction of the busbar, the existing support structure usually makes the inner diameter of the clamp slightly larger than the outer diameter of the busbar. Under the action of thermal expansion and contraction, the busbar can slide in the clamp.

[0003] However, the existing clamp is usually fixed on the base and cannot move. Once the busbar is stuck in the clamp, the busbar cannot continue to move, which can easily tear the outer layer of the busbar and reduce the service life of the busbar. Summary of the invention

[0004] In view of this, an object of the present invention is to provide a fixing structure for improving the life of the busbar, so that the fixing part can move with the movement of the busbar when the busbar expands and contracts, thereby preventing the outer layer of the busbar from being torn and improving the life of the busbar.

[0005] In order to achieve the above-mentioned object, the present invention provides a fixing structure for improving the service life of a busbar, comprising a support frame (1), a cross arm (2) and a guide column (3);

[0006] The support frame (1) is used to be fixed on the installation platform, the cross arm (2) is located above the support frame (1), a plurality of fixing members (4) for fixing the busbar are arranged on the cross arm (2), the axial direction of the guide column (3) is parallel to the length direction of the busbar, a first through hole (A) is arranged on the cross arm (2), one end of the guide column (3) is fixedly connected to the support frame (1), and the other end of the guide column (3) passes through the first through hole (A) to connect the cross arm (2) and the support frame (1);

[0007] There is a force between the guide column (3) and the inner wall of the first through hole (A), and the force causes the cross arm (2) to be fixed statically on the guide column (3). When the cross arm (2) is acted upon by an external force and the external force is sufficient to overcome the force, the cross arm (2) slides along the guide column (3).

[0008] Wherein, the support frame (1) comprises two support rods (11), the number of the cross arm (2) is at least one, and each of the support rods (11) is provided with at least one guide column (3);

[0009] The two support rods (11) are used to be arranged relatively on the mounting platform, and the two ends of the cross arm (2) are provided with the first through hole (A), so that one end of the cross arm (2) is connected to a guide column (3) on one support rod (11) through the corresponding first through hole (A), and the other end of the cross arm (2) is connected to a guide column (3) on the other support rod (11) through the corresponding first through hole (A).

[0010] Wherein, a bracket (5) is fixed on the end of the cross arm (2), and the first through hole (A) is arranged on the bracket (5) so as to be arranged on the cross arm (2) through the bracket (5).

[0011] The bracket (5) comprises a U-shaped portion (51) and wing portions (52) extending outward from both sides of the opening of the U-shaped portion (51); the wing portions (52) are fixed to the cross arm (2); the opening of the U-shaped portion (51) faces the cross arm (2) so as to form the first through hole (A) together with the cross arm (2); and the acting force is the friction force between the guide column (3) and the inner wall of the first through hole (A).

[0012] Wherein, a gasket (53) is provided between the guide pillar (3) and the inner wall of the first through hole (A);

[0013] The washer (53) is fixed on the inner wall of the first through hole (A), and the acting force is the friction force between the guide column (3) and the washer (53); or the washer (53) is fixed on the surface of the guide column (3), and the acting force is the friction force between the washer (53) and the inner wall of the first through hole (A).

[0014] Wherein, the guide column (3) is a hollow guide column (3), and the wing portion (52) and the U-shaped portion (51) are an integrally formed part.

[0015] Wherein, the support (5) comprises a base (61), a clamp (62) and a fastener (63);

[0016] The base (61) is fixed to the cross arm (2), one end of the clamp (62) is fixed to the base (61), the other end of the clamp (62) has a split (B) to divide the other end of the clamp (62) into a left end and a right end, the first through hole (A) is provided on the clamp (62) and is connected to the split (B), and the fastener (63) is connected to the left end and the right end to adjust the size of the first through hole (A), thereby adjusting the clamping force of the clamp (62) on the guide column (3);

[0017] The acting force is the friction force between the guide column (3) and the inner wall of the first through hole (A), or the acting force is the clamping force of the clamp (62) on the guide column (3).

[0018] Wherein, the fastener (63) is a bolt, and through holes are provided on the left end and the right end, and the bolt passes through the through hole of the left end, the crack (B) and the through hole of the right end in sequence.

[0019] Wherein, the base (61) and the clamp (62) are integrally formed parts.

[0020] Wherein, the surface of the guide pillar (3) is a smooth surface.

[0021] The fixing member (4) comprises a fixing part (41), a movable part (42), a screw (43) and a nut (44); both the fixing part (41) and the movable part (42) are provided with openings, and the openings are non-enclosed openings; the fixing part (41) is fixed on the cross arm (2); both sides of the fixing part (41) are provided with slide rails (411); both sides of the movable part (42) are connected to the slide rails (411); and the fixing part (41) and the movable part (42) are fastened together by the cooperation of the screw (43) and the nut (44); and the openings of the fixing part (41) and the movable part (42) together form a second through hole for passing the busbar.

[0022] The embodiment of the present application also provides another fixing structure for improving the service life of a busbar, comprising a support frame (1), a cross arm (2) and a guide column (3);

[0023] The support frame (1) is used to be fixed on the installation platform, the cross arm (2) is located above the support frame (1), a plurality of fixing members (4) for fixing the busbar are arranged on the cross arm (2), the axial direction of the guide column (3) is parallel to the length direction of the busbar, a first through hole (E) is arranged on the support frame (1), one end of the guide column (3) is fixed on the cross arm (2), and the other end of the guide column (3) passes through the first through hole (E) to connect the cross arm (2) and the support frame (1);

[0024] There is a force between the guide column (3) and the inner wall of the first through hole (E), and the force causes the guide column (3) to be fixed statically on the support frame (1). When the cross arm (2) is subjected to an external force sufficient to overcome the force, the guide column (3) slides axially in the first through hole (E) along the guide column (3), thereby driving the cross arm (2) to slide.

[0025] Wherein, the support frame (1) comprises two support rods (11), the number of the cross arm (2) is at least one, and each of the support rods (11) is provided with at least one of the first through holes (E);

[0026] The two support rods (11) are used to be arranged relatively on the mounting platform, and a guide column (3) is fixed to each end of the cross arm (2), so that one end of the cross arm (2) is connected to a first through hole (E) on one support rod (11) through a corresponding guide column (3), and the other end of the cross arm (2) is connected to a first through hole (E) on another support rod (11) through a corresponding guide column (3).

[0027] The support rod (11) is a groove structure, the outer surfaces of the groove bottom walls of the two support rods (11) are arranged opposite to each other, and the first through hole (A) is arranged on the groove side wall of the support rod (11) close to the cross arm (2) and passes through the groove side wall.

[0028] Wherein, the surface of the guide pillar (3) is a smooth surface.

[0029] Wherein, the guide pillar (3) is a hollow guide pillar (3).

[0030] The fixing member (4) comprises a fixing portion (41), a movable portion (42), a screw (43) and a nut (44); both the fixing portion (41) and the movable portion (42) are provided with openings, and the openings are non-enclosed openings; the fixing portion (41) is fixed on the cross arm (2); both sides of the fixing portion (41) are provided with slide rails (411); both sides of the movable portion (42) are connected to the slide rails (411); and the fixing portion (41) and the movable portion (42) are fastened together by the cooperation of the screw (43) and the nut (44); and the openings of the fixing portion (41) and the movable portion (42) together form a second through hole (45) for passing the busbar.

[0031] Beneficial technical effects of the present invention: In the fixing structure for improving the service life of the busbar of the present invention, it includes a support frame, a cross arm and a guide column, wherein the support frame is used to be fixed on a mounting platform, and the mounting platform can be, for example, the inner wall of a wind power tower, the cross arm is located above the support frame, and a plurality of fixing parts for fixing the busbar are arranged on the cross arm, the axial direction of the guide column is parallel to the length direction of the busbar, a first through hole is arranged on the cross arm, one end of the guide column is fixed on the support frame, and the other end of the guide column passes through the first through hole to connect the cross arm and the support frame, wherein there is a force between the guide column and the inner wall of the first through hole, and the force makes the cross arm statically fixed on the guide column, and when the cross arm is subjected to an external force and the external force is sufficient To overcome the force, the cross arm can slide along the guide column. Therefore, when the busbar is deformed due to thermal expansion and contraction, if the fixing piece clamps the busbar, the movement of the busbar will generate a certain thrust or pull on the fixing piece. The fixing piece is fixed on the cross arm, so the thrust or pull also acts on the cross arm, that is, an external force acts on the cross arm. When the thrust or pull overcomes the force between the guide column and the inner wall of the first through hole, the cross arm drives the fixing piece to slide upward or downward along the guide column under the action of the thrust or pull, that is, the fixing piece moves with the movement of the busbar, thereby avoiding the fixing piece hindering the normal movement of the busbar, which is beneficial to prevent the outer layer of the busbar from being torn and prolonging the life of the busbar.

[0032] In order to make the above-mentioned objects, features and advantages of the invention more obvious and easy to understand, the preferred embodiments of the present invention are specifically cited below and described in detail with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0034] Figure 1 A schematic structural diagram of a fixing structure for improving the life of a busbar provided by an embodiment of the present invention;

[0035] Figure 2 for Figure 1 A top view of the fixing structure shown;

[0036] Figure 3 for Figure 2 A view of the fixing structure shown along the CD direction;

[0037] Figure 4 is another structural schematic diagram of a fixing structure for improving the service life of a busbar provided by an embodiment of the present invention;

[0038] Figure 5 yes Figure 4 An enlarged schematic diagram of the circled dotted line portion of the fixed structure shown;

[0039] Figure 6 yes Figure 4 A top view of the fixing structure shown;

[0040] Figure 7 yes Figure 6 The fixed structure is shown in the CD direction.

[0041] Figure 8 This is another structural schematic diagram of a fixing structure for improving the service life of a busbar provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical solution and beneficial technical effect of the present invention clearer, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be understood that the specific implementation methods described in this specification are only for explaining the present invention, not for limiting the present invention.

[0043] See also Figures 1 to 3 The fixed structure for improving the service life of the busbar in an embodiment of the present invention includes a support frame 1, a cross arm 2 and a guide column 3.

[0044] The support frame 1 is used to be fixed on a mounting platform, which can be, for example, the inner wall of a wind turbine tower, or can also be an electric power equipment such as a pole. The cross arm 2 is located above the support frame 1, and a plurality of fixings 4 for fixing the busbar are arranged on the cross arm 2. For example, three fixings 4 can be arranged, and each fixing 4 is used to clamp a busbar to limit and fix the busbar. One end of the guide column 3 is fixed on the support frame 1, and a first through hole A is arranged on the cross arm 2. The other end of the guide column 3 passes through the first through hole A to connect the cross arm 2 and the support frame 1. The axial direction of the guide column 3 is parallel to the length direction of the busbar. For example, when the fixing structure of the present application is applied to a wind belt tower, the busbar is generally arranged vertically in the tower along the length direction of the tower, that is, the length direction of the busbar is the vertical direction of the tower, and the axial direction of the guide column 3 is also the vertical direction of the tower. The fixing 4 can be, for example, a clamp or other fixings.

[0045] There is a force between the guide post 3 and the inner wall of the first through hole A, and the force makes the cross arm 2 statically fixed on the guide post 3, and when the cross arm 2 is acted by an external force and the external force is sufficient to overcome the force, the cross arm 2 slides along the guide post 3. Therefore, when the busbar is deformed due to thermal expansion and contraction, if the fixing member 4 clamps the busbar, the movement of the busbar will generate a certain thrust or pull on the fixing member 4, and the fixing member 4 is fixed on the cross arm 2, so the thrust or pull also acts on the cross arm 2, that is, there is an external force acting on the cross arm 2, when the thrust or pull is sufficient to overcome the force between the guide post 3 and the inner wall of the first through hole A, the cross arm 2 drives the fixing member 4 to slide upward or downward along the guide post 3 under the action of the thrust or pull, that is, the fixing member 4 moves with the movement of the busbar, so that the fixing member 4 can be prevented from hindering the normal movement of the busbar, which is conducive to preventing the outer layer of the busbar from being torn and improving the life of the busbar.

[0046] The support frame 1 includes two support rods 11. Figure 1 As described above, the two support rods 11 are arranged opposite to each other, and the two support rods 11 are used to be fixed on the inner wall of the wind tower and other mounting platforms, and at least one guide column 3 is arranged on each support rod 11. Among them, the number of cross arms 2 is at least one, that is, there can be one or more cross arms 2, such as Figure 1 As shown, there are two crossarms 2. The number of guide posts 3 on each support rod 11 is the same as the number of crossarms 2. First through holes A are provided at both ends of the crossarm 2, so that one end of the crossarm 2 is connected to a guide post 3 on one support rod 11 through the corresponding first through hole A, and the other end of the crossarm 2 is connected to a guide post 3 on another support rod 11 through the corresponding first through hole A. The fixing member 4 is located in the area between the two ends of the crossarm 2, and a plurality of fixing members 4 are fixed to the crossarm 2 in sequence.

[0047] In one implementation, the first through hole A may be directly provided on the end of the cross arm 2 , that is, a hole is directly opened on the end of the cross arm 2 to form the first through hole A, so that the guide column 3 is inserted into the first through hole A1 .

[0048] Alternatively, in some other implementations, the first through hole A may also be indirectly provided on the end of the cross arm 2. For example, Figure 1 As shown, a bracket 5 can be fixed on the end of the cross arm 2 , and then a first through hole A is provided on the bracket 5 , so that the cross arm 2 is connected to the guide column 3 through the first through hole A on the bracket 5 .

[0049] Furthermore, the bracket 5 can be a fixing frame, which can include a U-shaped portion 51 and wing portions 52 extending outward from both sides of the opening of the U-shaped portion 51. The wing portions 52 are fixed to the crossarm 2, for example, the wing portions 52 can be fixed to the crossarm 2 by screws. The opening of the U-shaped portion 51 faces the crossarm 2 to form a first through hole A together with the crossarm 2. The acting force between the guide column 3 and the inner wall of the first through hole A is the friction force between the guide column 3 and the inner wall of the first through hole A, that is, the guide column 3 is in contact with the inner wall of the first through hole A, and there is friction between the two, and the friction force can make the crossarm 2 statically fixed on the guide column 3. When the busbar in the fixing member 4 moves due to thermal expansion and contraction, it may be stuck by the fixing member 4, that is, there is no longer relative movement between the fixing member 4 and the busbar. At this time, the continued movement of the busbar will generate a certain thrust or pull on the fixing member 4. When the thrust or pull is sufficient to overcome the friction between the guide column 3 and the inner wall of the first through hole A, the cross arm 2 is pushed or pulled to slide upward or downward along the guide column to drive the fixing member 4 to move, thereby preventing the fixing member 4 from affecting the normal movement of the busbar.

[0050] Among them, the force generated by the busbar when it expands and contracts due to heat and cold is generally small, so the friction between the guide column 3 and the inner wall of the first through hole A can be set to be relatively small, and the friction between the two can be set by setting the smoothness of the guide column 3 and / or the inner wall of the first through hole A. For example, the surface of the guide column 3 can be made a smooth surface to reduce the friction, so that the cross arm 2 can slide more easily on the guide column 3 through the bracket 5, and the reaction to the thermal expansion and contraction of the busbar is more sensitive, that is, the smaller the friction, the busbar may have a slight expansion movement to push the cross arm 2 to slide, so that the fixing member 4 is more adaptable to the movement of the busbar, and the smooth guide column 3 can also make the sliding of the cross arm 2 smoother to avoid jamming during the sliding process.

[0051] Optionally, a gasket 53 may be provided between the guide post 3 and the inner wall of the first through hole A. The gasket 53 may be a rubber ring or a silicone ring. The gasket 53 may be fixed on the inner wall of the first through hole A, in which case the friction between the guide post 3 and the inner wall of the first through hole A is the friction between the guide post 3 and the gasket 53; or the gasket 53 may be fixed on the surface of the guide post 3, in which case the friction between the guide post 3 and the inner wall of the first through hole A is the friction between the gasket 53 and the inner wall of the first through hole A. By providing the gasket 53, the friction between the guide post 3 and the inner wall of the first through hole A can be buffered, thereby reducing the wear on the guide post 3 after multiple sliding.

[0052] The U-shaped portion 51 and the wing portion 52 of the bracket 5 may be an integrally formed part, or may be a split structure.

[0053] The guide column 3 may be a hollow guide column to reduce weight, or may be a solid guide column to improve the strength of the guide column 3 .

[0054] Of course, in other embodiments, the U-shaped portion in the bracket 5 may also be an O-shaped portion, and in this case, the first through hole A is the through hole on the O-shaped portion.

[0055] See also Figures 4 to 7 In another implementation of the bracket of the embodiment of the present application, in this implementation, the bracket 5 is a clamp structure. Specifically, as shown in the figure, the bracket 5 may include a base 61, a clamp 62 and a fastener 63. Among them, the bracket 5 may be a T-shaped structure, the base 61 corresponds to the transverse part of the bracket 5, the clamp 62 corresponds to the longitudinal part of the bracket 5, the base 61 is fixed on the cross arm 2, and a first through hole A for passing the guide column 3 is provided between the two ends of the clamp 62, one end of the clamp 62 is fixed to the base 61, and the other end of the clamp 62 has a split B to divide the end of the clamp 62 into a left end and a right end, the split B is connected to the first through hole A, and the fastener 63 is connected to the left end and the right end to adjust the clamping force of the clamp 62 on the guide column 3.

[0056] The fastener 63 may be a bolt, and through holes are provided on the left and right ends of the clamp 62. The fastener 63 passes through the through hole at the left end, the split B, and the through hole at the right end in sequence. The through hole may be, for example, a threaded hole, so that the fastener 63 is threadedly matched with the threaded hole to achieve the connection between the fastener 63 and the end of the clamp 62, and the left and right ends of the clamp 62 can be moved toward or away from each other by turning the fastener 63 in a forward or reverse direction, thereby adjusting the clamping force on the guide column 3. Alternatively, the through hole may also be a hole with a smooth hole wall, and the bracket 5 may further include a nut. After the fastener 63 passes through the through hole at the left end, the split B, and the through hole at the right end in sequence, the fastener 63 is matched with the nut to fix the fastener 63 in the through hole, and the left and right ends of the clamp 62 can be moved toward or away from each other by turning the knob nut in a forward or reverse direction.

[0057] The base 61 and the clamp 62 may be an integrally formed part, or may be a split structure.

[0058] In addition, one or two brackets 5 may be provided on each end of the cross arm 2 . When there are multiple brackets 5 , the multiple brackets 5 are arranged in sequence along the extension direction of the guide column 3 .

[0059] The force between the guide post 3 and the inner wall of the first through hole A may be the friction force between the two, that is, the bracket 5 itself does not apply a pressing force to the guide post 3, but is clamped on the guide post 3 by the friction between the bracket 5 and the guide post 3; or, the force between the guide post 3 and the inner wall of the first through hole A may also be the clamping force of the clamp 62 on the guide post 3, and the clamp 62 may also apply a pressing force to the guide post 3 by the action of its own clamp to clamp the guide post 3. Therefore, when the bracket 5 is subjected to a force greater than that between the guide post 3 and the inner wall of the first through hole A, the bracket 5 can slide along the guide post 3, thereby driving the cross arm 2 to slide.

[0060] Among them, when the force exerted on the fixing part 4 by the thermal expansion and contraction of the busbar is sufficient to overcome the clamping force of the clamp 62 on the guide column 3, the cross arm 2 can slide along the guide column 3, thereby driving the fixing part 4 to slide, so as to avoid the fixing part 4 hindering the normal movement of the busbar. The force exerted by the thermal expansion and contraction of the busbar is generally small. In order to improve the reaction sensitivity, the clamping force of the clamp 62 on the guide column 3 can be set to be relatively small, so that the cross arm 2 can also slide when the busbar moves slightly. In practical applications, the clamping degree of the clamp 62 on the guide column 3 can be set through a limited number of experiments, such as simulating different degrees of thermal expansion and contraction of the busbar, and observing whether the clamp 62 slides along the guide column 3 under various degrees of thermal expansion and contraction, so as to determine the clamping degree of the clamp 62 on the guide column 3 according to actual needs.

[0061] In an embodiment of the present invention, the fixing member 4 includes a fixing portion 41, a movable portion 42, a screw 43 and a nut 44, wherein the fixing portion 41 is fixed on the cross arm 2, wherein a gasket may be arranged between the fixing portion 41 and the cross arm 2, and the gasket may be, for example, a metal gasket, a silicone gasket or a rubber gasket, which is not limited thereto. Slide rails 411 are arranged on both sides of the fixing portion 41, and both sides of the movable portion 42 are respectively connected to the slide rails 411, and both sides of the fixing portion 41 and the movable portion 42 are respectively fastened together by the cooperation of the screw 43 and the nut 44. Both the fixing portion 41 and the movable portion 42 are provided with openings, which are non-enclosed openings, and the openings of the fixing portion 41 and the movable portion 42 together form a second through hole 45 for passing the busbar.

[0062] It is understandable that the non-enclosed opening described in the embodiment of the present invention means that the opening has a gap, not a complete closed opening, so the non-enclosed opening can be a half opening, a third opening, or a quarter opening, such as Figure 1 and Figure 2 As shown, the openings on the fixed portion 41 and the movable portion 42 are semi-open holes, so that the fixed portion 41 and the movable portion 42 can jointly form a second through hole 45 .

[0063] Among them, both sides of the fixed part 41 and the movable part 42 are provided with fixing holes, the fixing holes on the fixed part 41 can be, for example, threaded holes, and the fixing holes on the movable part 42 can be, for example, non-threaded holes, and the screws 43 pass through the fixing holes on the same side of the fixed part 41 and the movable part 42 in sequence, and are fixed to the fixed part 41 by threaded cooperation with the threaded holes. The nut 44 is sleeved on the screw 43, and by turning the knob nut 44 forward or backward, the movable part 42 can slide toward the fixed part 41 or away from the fixed part 41, thereby changing the size of the second through hole 45, thereby achieving clamping or non-clamping of the busbar.

[0064] In the above embodiments, one end of the guide post is fixed on the support frame, and the other end of the guide post is inserted into the first through hole of the cross arm, and the cross arm slides along the guide post. Figure 8 The embodiment of the present application also provides another fixing structure for improving the life of the busbar. In this embodiment, the main difference from the above embodiment is that a first through hole is provided on the support frame, that is, the first through hole is provided on the support frame, one end of the guide column is fixed on the cross arm, and the other end of the guide column passes through the first through hole on the support frame, so that when the cross arm is subjected to external force, the cross arm carries the guide column to slide relative to the support frame.

[0065] Specifically, in the fixing structure of this embodiment, the fixing structure includes a support frame 1 , a cross arm 2 and a guide column 3 .

[0066] The support frame 1 is used to be fixed on a mounting platform, which can be, for example, the inner wall of a wind power tower, or can also be an electric power equipment such as a pole. The cross arm 2 is located above the support frame 1, and a plurality of fixings 4 for fixing the busbar are arranged on the cross arm 2, for example, three fixings 4 can be arranged, and each fixing 4 is used to clamp a busbar to limit and fix the busbar. One end of the guide column 3 is fixed on the cross arm 2, for example, it can be fixed by screws, or it can also be fixed by welding or other methods, which is not limited. The support frame 1 is provided with a first through hole E, and the other end of the guide column 3 passes through the first through hole E to connect the cross arm 2 and the support frame 1. The axial direction of the guide column 3 is parallel to the length direction of the busbar. For example, when the fixing structure of the present application is applied to a wind belt tower, the busbar is generally arranged vertically in the tower along the length direction of the tower, that is, the length direction of the busbar is the vertical direction of the tower, and the axial direction of the guide column 3 is also the vertical direction of the tower.

[0067] There is a force between the guide column 3 and the inner wall of the first through hole E, which makes the guide column 3 statically fixed on the support frame 1, that is, the cross arm 2 is relatively static with the support frame 1. When the cross arm 2 is subjected to an external force and the external force is sufficient to overcome the force, the guide column 3 can slide along the axial direction of the guide column in the first through hole E, thereby driving the cross arm 2 to slide. Therefore, when the busbar is deformed due to thermal expansion and contraction, if the fixing member 4 clamps the busbar, the movement of the busbar will generate a certain thrust or pull on the fixing member 4, and the fixing member 4 is fixed on the crossarm 2, so the thrust or pull also acts on the crossarm 2, that is, an external force acts on the crossarm 2, and the guide column 3 is fixed on the crossarm 2, so when the thrust or pull is sufficient to overcome the force between the guide column 3 and the inner wall of the first through hole E, the guide column 3 slides relative to the first through hole E, thereby driving the crossarm 2 to slide, that is, the fixing member 4 moves with the movement of the busbar, thereby avoiding the fixing member 4 hindering the normal movement of the busbar, which is beneficial to prevent the outer layer of the busbar from being torn and prolonging the life of the busbar.

[0068] The support frame 1 includes two support rods 11. Figure 8 As described above, the two support rods 11 are arranged opposite to each other, and the two support rods 11 are used to be fixed on the inner wall of the wind tower and other mounting platforms, and each support rod 11 is provided with at least one first through hole E. Among them, the number of the cross arm 2 is at least one, that is, the cross arm 2 can be one or more, such as Figure 8 As shown, there are two crossarms 2. The number of first through holes E on each support rod 11 is the same as the number of crossarms 2. A guide column 3 is fixed to both ends of the crossarm 2, so that one end of the crossarm 2 is connected to a first through hole E on one support rod 11 through the corresponding guide column 3, and the other end of the crossarm 2 is connected to a first through hole E on another support rod 11 through the corresponding guide column. The fixing member 4 is located in the area between the two ends of the crossarm 2, and a plurality of fixing members 4 are fixed to the crossarm 2 in sequence.

[0069] Among them, the support rod 11 is a groove structure, and the outer surfaces of the bottom walls of the grooves of the two support rods 11 are arranged oppositely, and the first through hole E is arranged on the side wall of the groove of the support rod 11 close to the cross arm 2, and penetrates the side wall of the groove, so that the guide column 3 can pass through the first through hole E and be inserted into the groove structure, thereby providing more sliding space for the guide column 3. Of course, the first through hole E can also be arranged on the side wall of the groove on the other side of the groove structure, that is, the first through hole E is arranged on both side walls of the groove structure, so that the guide column 3 can pass through the two first through holes E in sequence, so that the guide column 3 has more sliding space.

[0070] The force between the guide post 3 and the inner wall of the first through hole E is the friction between the guide post 3 and the inner wall of the first through hole E, that is, the guide post 3 is in contact with the inner wall of the first through hole E, and there is friction between the two, which can make the guide post 3 statically fixed on the support rod 11. When the busbar in the fixing member 4 moves due to thermal expansion and contraction, it may be stuck by the fixing member 4, that is, there is no relative movement between the fixing member 4 and the busbar, and the continued movement of the busbar will generate a certain thrust or pull on the fixing member 4 at this time. When the thrust or pull is sufficient to overcome the friction between the guide post 3 and the inner wall of the first through hole E, the guide post 3 will slide relative to the first through hole E, that is, the support rod, thereby driving the cross arm 2 to slide, and then driving the fixing member 4 to move, so as to prevent the fixing member 4 from affecting the normal movement of the busbar.

[0071] The guide pillar 3 may have a smooth surface or a rough surface, and may be configured according to actual needs. The guide pillar 3 may be a hollow guide pillar or a solid guide pillar.

[0072] The fixing member 4 includes a fixing portion 41, a movable portion 42, a screw 43 and a nut 44. The fixing portion 41 is fixed on the cross arm 2, wherein a gasket may be arranged between the fixing portion 41 and the cross arm 2, and the gasket may be, for example, a metal gasket, a silicone gasket or a rubber gasket, which is not limited thereto. Slide rails 411 are arranged on both sides of the fixing portion 41, and both sides of the movable portion 42 are respectively connected to the slide rails 411, and both sides of the fixing portion 41 and the movable portion 42 are respectively fastened together by the cooperation of the screw 43 and the nut 44. Both the fixing portion 41 and the movable portion 42 are provided with openings, which are non-enclosed openings, and the openings of the fixing portion 41 and the movable portion 42 together form a second through hole 45 for passing the busbar.

[0073] It is understandable that the non-enclosed opening described in the embodiment of the present invention means that the opening has a gap, not a complete closed opening, so the non-enclosed opening can be a half opening, a third opening, or a quarter opening, such as Figure 1 and Figure 2 As shown, the openings on the fixed portion 41 and the movable portion 42 are semi-open holes, so that the fixed portion 41 and the movable portion 42 can jointly form a second through hole 45 .

[0074] Among them, both sides of the fixed part 41 and the movable part 42 are provided with fixing holes, the fixing holes on the fixed part 41 can be, for example, threaded holes, and the fixing holes on the movable part 42 can be, for example, non-threaded holes, and the screws 43 pass through the fixing holes on the same side of the fixed part 41 and the movable part 42 in sequence, and are fixed to the fixed part 41 by threaded cooperation with the threaded holes. The nut 44 is sleeved on the screw 43, and by turning the knob nut 44 forward or backward, the movable part 42 can slide toward the fixed part 41 or away from the fixed part 41, thereby changing the size of the second through hole 45, thereby achieving clamping or non-clamping of the busbar.

[0075] The present invention is not limited to what is described in the specification and implementation modes, and therefore additional advantages and modifications can be easily realized by those skilled in the art. Therefore, without departing from the spirit and scope of the general concept defined by the claims and their equivalents, the present invention is not limited to the specific details, representative devices, and illustrative examples shown and described herein.

Claims

1. A fixing structure for improving the service life of a busbar, characterized in that: It comprises a support frame (1), a cross arm (2) and a guide column (3); The support frame (1) is used to be fixed on the installation platform, the cross arm (2) is located above the support frame (1), a plurality of fixing members (4) for fixing the busbar are arranged on the cross arm (2), the axial direction of the guide column (3) is parallel to the length direction of the busbar, a first through hole (A) is arranged on the cross arm (2), one end of the guide column (3) is fixedly connected to the support frame (1), and the other end of the guide column (3) passes through the first through hole (A) to connect the cross arm (2) and the support frame (1); The support frame (1) comprises two support rods (11), the number of the cross arm (2) is at least one, and each of the support rods (11) is provided with at least one guide column (3); The two support rods (11) are used to be arranged relatively on the mounting platform, and the two ends of the cross arm (2) are provided with the first through hole (A), so that one end of the cross arm (2) is connected to a guide column (3) on one support rod (11) through the corresponding first through hole (A), and the other end of the cross arm (2) is connected to a guide column (3) on the other support rod (11) through the corresponding first through hole (A); A bracket (5) is fixed on the end of the cross arm (2), and the first through hole (A) is provided on the bracket (5) so as to be provided on the cross arm (2) through the bracket (5); There is a force between the guide column (3) and the inner wall of the first through hole (A), and the force causes the cross arm (2) to be fixed statically on the guide column (3). When the cross arm (2) is acted upon by an external force and the external force is sufficient to overcome the force, the cross arm (2) slides along the guide column (3), and the force is the friction force between the guide column (3) and the inner wall of the first through hole (A).

2. The fixing structure according to claim 1, characterized in that: The bracket (5) comprises a U-shaped portion (51) and wing portions (52) extending outward from both sides of an opening of the U-shaped portion (51); the wing portions (52) are fixed to the cross arm (2); the opening of the U-shaped portion (51) faces the cross arm (2) so as to enclose the first through hole (A) together with the cross arm (2).

3. The fixing structure according to claim 2, characterized in that: A gasket (53) is provided between the guide column (3) and the inner wall of the first through hole (A); The washer (53) is fixed on the inner wall of the first through hole (A), and the acting force is the friction force between the guide column (3) and the washer (53); or the washer (53) is fixed on the surface of the guide column (3), and the acting force is the friction force between the washer (53) and the inner wall of the first through hole (A).

4. The fixing structure according to claim 2, characterized in that: The guide column (3) is a hollow guide column (3), and the wing portion (52) and the U-shaped portion (51) are an integrally formed part.

5. The fixing structure according to claim 1, characterized in that: The bracket (5) comprises a base (61), a clamp (62) and a fastener (63); The base (61) is fixed to the cross arm (2), one end of the clamp (62) is fixed to the base (61), the other end of the clamp (62) has a split (B) to divide the other end of the clamp (62) into a left end and a right end, the first through hole (A) is provided on the clamp (62) and is connected to the split (B), and the fastener (63) is connected to the left end and the right end to adjust the size of the first through hole (A), thereby adjusting the clamping force of the clamp (62) on the guide column (3); The acting force is the friction force between the guide column (3) and the inner wall of the first through hole (A), or the acting force is the clamping force of the clamp (62) on the guide column (3).

6. The fixing structure according to claim 5, characterized in that: The fastener (63) is a bolt, and through holes are provided on the left end and the right end. The bolt passes through the through hole at the left end, the crack (B), and the through hole at the right end in sequence.

7. The fixing structure according to claim 5, characterized in that: The base (61) and the clamp (62) are integrally formed parts.

8. The fixing structure according to any one of claims 1 to 7, characterized in that: The surface of the guide pillar (3) is a smooth surface.

9. The fixing structure according to claim 1, characterized in that: The fixing member (4) comprises a fixing portion (41), a movable portion (42), a screw (43) and a nut (44); the fixing portion (41) and the movable portion (42) are both provided with openings, and the openings are non-enclosed openings; the fixing portion (41) is fixed on the cross arm (2); slide rails (411) are provided on both sides of the fixing portion (41); both sides of the movable portion (42) are connected to the slide rails (411); the fixing portion (41) and the movable portion (42) are fastened together by the cooperation of the screw (43) and the nut (44); the openings of the fixing portion (41) and the movable portion (42) together form a second through hole for passing the busbar.

10. A fixing structure for improving the service life of a busbar, characterized in that: It comprises a support frame (1), a cross arm (2) and a guide column (3); The support frame (1) is used to be fixed on the installation platform, the cross arm (2) is located above the support frame (1), a plurality of fixing members (4) for fixing the busbar are arranged on the cross arm (2), the axial direction of the guide column (3) is parallel to the length direction of the busbar, a first through hole (E) is arranged on the support frame (1), one end of the guide column (3) is fixed on the cross arm (2), and the other end of the guide column (3) passes through the first through hole (E) to connect the cross arm (2) and the support frame (1); There is a force between the guide column (3) and the inner wall of the first through hole (E), and the force causes the guide column (3) to be fixed statically on the support frame (1); when the cross arm (2) is subjected to an external force sufficient to overcome the force, the guide column (3) slides axially in the first through hole (E) along the guide column (3), thereby driving the cross arm (2) to slide; The support frame (1) comprises two support rods (11), the number of the cross arm (2) is at least one, and each of the support rods (11) is provided with at least one of the first through holes (E); The two support rods (11) are used to be arranged relatively on the mounting platform, and a guide column (3) is fixed to each end of the cross arm (2), so that one end of the cross arm (2) is connected to a first through hole (E) on one support rod (11) through a corresponding guide column (3), and the other end of the cross arm (2) is connected to a first through hole (E) on another support rod (11) through a corresponding guide column (3); The support rod (11) is a groove structure, the outer surfaces of the groove bottom walls of the two support rods (11) are arranged opposite to each other, and the first through hole (A) is arranged on the groove side wall of the support rod (11) close to the cross arm (2) and penetrates the groove side wall; The surface of the guide pillar (3) is a smooth surface; The guide column (3) is a hollow guide column (3).

11. The fixing structure according to claim 10, characterized in that: The fixing member (4) comprises a fixing portion (41), a movable portion (42), a screw (43) and a nut (44); the fixing portion (41) and the movable portion (42) are both provided with openings, and the openings are non-enclosed openings; the fixing portion (41) is fixed on the cross arm (2); slide rails (411) are provided on both sides of the fixing portion (41); both sides of the movable portion (42) are connected to the slide rails (411); the fixing portion (41) and the movable portion (42) are fastened together by the cooperation of the screw (43) and the nut (44); the openings of the fixing portion (41) and the movable portion (42) together form a second through hole (45) for passing the busbar.

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