CN211631525U

CN211631525U - Bird repelling device

Info

Publication number: CN211631525U
Application number: CN201921964361.2U
Authority: CN
Inventors: 张起钧; 姬丙和; 程子建; 张天华; 孙恒文; 王普军; 董明年; 宋忠利; 刘志军; 孙爱国; 田阳; 刘建福; 王超; 龙云; 闫文; 沙泉
Original assignee: Petrochina Co Ltd
Current assignee: Petrochina Co Ltd
Priority date: 2019-11-13
Filing date: 2019-11-13
Publication date: 2020-10-09
Anticipated expiration: 2029-11-13

Abstract

The utility model discloses a bird repellent device, this bird repellent device includes: the mounting column is used for being mounted on a cross arm of a tower; the rotating frame comprises a connecting piece and a plurality of rotating rods, the connecting piece is positioned on the mounting column and fixedly connected with the plurality of rotating rods, one end of each rotating rod is rotatably connected with the mounting column, and the plurality of rotating rods are circumferentially distributed around the mounting column at intervals; a plurality of fan blades corresponding to the plurality of rotating rods one by one, wherein each fan blade is connected to the other end of the corresponding rotating rod; a locking member for operably locking the turret and the mounting post. The bird repelling device can be controlled to stop working, and abrasion caused by the fact that the bird repelling device operates all the year round is prevented.

Description

Bird repelling device

Technical Field

The utility model relates to a transmission line drives bird technical field, in particular to bird repellent device.

Background

The transmission line generally includes a tower, a wire, an insulator, a line fitting, and other structures. The wire is fixed on a tower erected on the ground through a line fitting and an insulator, so that the wire can safely transmit electric energy at a high-altitude position. The cross arm position on the tower of the transmission line often has the nest of birds, and the bird nest can shorten the electrical insulation distance of transmission wire, very easily causes high tension line short circuit or earth fault, has seriously influenced transmission line's safe and stable operation.

In the related art, a wind power bird repelling device is arranged at the cross arm position of a tower and comprises a main rod arranged on the cross arm and fan blades movably arranged on the main rod, and the fan blades can rotate around the circumferential direction of the main rod under the driving of wind power so as to repel birds near the cross arm.

However, the wind-driven bird repelling device is easy to wear or damage when running all the year round under the action of wind, and the maintenance cost is increased.

SUMMERY OF THE UTILITY MODEL

The disclosed embodiment provides a bird repelling device, which can be controlled to stop working and prevent the bird repelling device from being worn due to year-round operation. The technical scheme is as follows:

the embodiment of the present disclosure provides a bird repelling device, the bird repelling device includes: the mounting column is used for being mounted on a cross arm of a tower; the rotating frame comprises a connecting piece and a plurality of rotating rods, the connecting piece is positioned on the mounting column and fixedly connected with the plurality of rotating rods, one end of each rotating rod is rotatably connected with the mounting column, and the plurality of rotating rods are circumferentially distributed around the mounting column at intervals; a plurality of fan blades corresponding to the plurality of rotating rods one by one, wherein each fan blade is connected to the other end of the corresponding rotating rod; a locking member for operably locking the turret and the mounting post.

In one implementation of the embodiment of the present disclosure, the locking member is a locking rod, the locking rod is connected between the rotating frame and the mounting post, and at least one of the rotating frame and the mounting post is detachably connected to the locking rod.

In another implementation manner of the embodiment of the present disclosure, the locking member is a locking rod, one end of the locking rod is hinged to the mounting column, and a groove matched with the rotating rod is formed in an end surface of the other end of the locking rod.

In another implementation manner of the embodiment of the present disclosure, the locking member is a locking rod, one end of the locking rod is hinged to the mounting column, and the other end of the locking rod is provided with a hook used for being hung on the rotating rod.

In another implementation manner of the embodiment of the present disclosure, an operation hole is disposed in a middle portion of the locking member, and a central axis of the operation hole is not parallel to a central axis of the mounting post.

In another implementation manner of the embodiment of the present disclosure, the locking member is a nut, the nut is screwed on the mounting post, the mounting post is provided with a shaft shoulder, and the rotating frame is located between the shaft shoulder and the nut.

In another implementation manner of the embodiment of the present disclosure, the connecting member is a rotating ring, the rotating ring is coaxially and rotatably sleeved on the mounting column, and one end of each rotating rod is fixed on the outer wall of the rotating ring.

In another implementation of the disclosed embodiment, the fan blades are hemispherical shells.

In another implementation manner of the embodiment of the present disclosure, the bird repellent device further includes an installation base, the installation base has a first side plate and a second side plate which are opposite in parallel, and a connection side plate which connects the first side plate and the second side plate, the first side plate and the second side plate enclose a cross arm accommodating groove, the first side plate is connected with one end of the installation column, a screw hole is formed in the second side plate, and a jackscrew connected with a thread is arranged in the screw hole.

In another implementation manner of the embodiment of the present disclosure, the mounting base further has a stop side plate parallel to and opposite to the connection side plate, the stop side plate is connected to the first side plate, the second side plate is located between the connection side plate and the stop side plate, and the length of the first side plate is greater than the length of the second side plate in a direction from the connection side plate to the stop side plate.

In another implementation manner of the embodiment of the present disclosure, the jackscrew includes a screw and an installation cylinder coaxially connected to the screw, the installation cylinder has a closed end and an open end opposite to each other, the closed end of the installation cylinder is connected to the screw, the open end of the installation cylinder has a strip-shaped groove extending toward the closed end, and the strip-shaped groove penetrates through a cylinder wall of the installation cylinder.

In another implementation manner of the embodiment of the present disclosure, a locking groove is formed on a side edge of the strip-shaped groove, and the locking groove penetrates through a cylinder wall of the installation cylinder.

The beneficial effects brought by the technical scheme provided by the embodiment of the disclosure at least comprise:

the bird repellent device of the embodiment of the disclosure comprises an installation column for being installed on a cross arm of a tower, a rotating frame is installed on the installation column through a connecting piece, wherein a plurality of rotating rods are arranged on the connecting piece, one end of each rotating rod is rotatably connected with the installation column, and the plurality of rotating rods are circumferentially distributed at intervals around the installation column. Each rotating rod is provided with fan blades in one-to-one correspondence. When the bird repelling device works, the fan blades drive the rotating rod to rotate around the mounting column under the driving of wind power so as to realize the aim of repelling birds. The mounting column is also provided with a locking piece, the rotating frame and the mounting column are locked by the locking piece in an operable and controllable manner, and when the mounting column and the rotating frame are locked by the locking piece, the mounting column and the rotating frame are fixed together, so that the rotating rod is prevented from rotating around the mounting column; when the locking piece does not lock erection column and rotating turret, do not have the restriction each other between dwang and the erection column to make the dwang rotate around the erection column. The bird repelling device can only control and allow the bird repelling device to normally work in the middle of the nesting set of birds, and can control the bird repelling device to stop working in the middle of the non-nesting set of the birds, so that the bird repelling device is prevented from operating all year round under the action of wind force, the problem that the bird repelling device is easily abraded or damaged is solved, and the maintenance cost is reduced.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a bird repelling device provided in an embodiment of the present disclosure;

fig. 2 is a schematic structural diagram of a bird repelling device provided in the embodiment of the present disclosure;

fig. 3 is a top view of a bird repelling device provided in an embodiment of the present disclosure;

fig. 4 is a top view of another bird repelling device provided by the embodiment of the disclosure;

FIG. 5 is a schematic structural view of a detent lever according to an embodiment of the present disclosure;

FIG. 6 is a schematic structural view of a detent lever according to an embodiment of the present disclosure;

fig. 7 is a schematic structural view of a jack screw and a brake pull rod according to an embodiment of the disclosure.

Detailed Description

To make the objects, technical solutions and advantages of the present disclosure more apparent, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings.

The outdoor high-low voltage transmission lines in the oil field are in the concentrated outbreak period of bird nesting on the line electric poles in March to March every year, and the failure of short circuit or grounding of the line can be caused when the bird nests are not cleaned in time in rainy days, so that the safe and stable operation of the line is seriously influenced.

Fig. 1 is a schematic structural diagram of a bird repelling device provided in an embodiment of the present disclosure, and fig. 2 is a schematic structural diagram of a bird repelling device provided in an embodiment of the present disclosure. As shown in fig. 1 and 2, the bird repelling device includes: mounting post 1, turret 10, fan blades 13 and a latch. The mounting column 1 is used for being mounted on a cross arm of a tower, the rotating frame 10 comprises a connecting piece and a plurality of rotating rods 12, the connecting piece is located on the mounting column 1 and fixedly connected with the plurality of rotating rods 12, one end of each rotating rod 12 is rotatably connected with the mounting column 1, and the plurality of rotating rods 12 are circumferentially distributed at intervals around the mounting column 1; a plurality of fan blades 13 are provided, the plurality of fan blades 13 correspond to the plurality of rotating rods 12 one by one, and each fan blade 13 is connected to the other end of the corresponding rotating rod 12; the locking member is used to operatively lock the turret 10 and mounting post 1.

In this embodiment, the fan blades 13 are provided for inducing wind so as to rotate the rotating rod 12 together by the wind. Illustratively, fan blades 13 may be hemispherical shells.

In this embodiment, the connecting piece on the rotating frame 10 can be the rotating ring 11, the rotating ring 11 is coaxially rotated and is sleeved on the mounting column 1, one end of each rotating rod 12 is fixed on the outer wall of the rotating ring 11, and the plurality of rotating rods 12 are circumferentially distributed on the rotating ring 11 at intervals.

Illustratively, as shown in fig. 3, three rotating rods 12 are disposed on the rotating ring 11, the three rotating rods 12 are circumferentially arranged on the rotating ring 11 at intervals, and an included angle between two adjacent rotating rods 12 is 120 °. Set up three dwang 12 and compare in setting up single dwang 12, can have more flabellum 13 induced air to make dwang 12 rotate more easily, improve bird repellent device's work efficiency.

In other embodiments of the present disclosure, as shown in fig. 4, the connecting member on the rotating frame 10 may be a connecting structure 15 connecting a plurality of rotating rods 12. Wherein, the one end of every dwang 2 can set up the lantern ring, and every dwang 2 all is on erection column 1 through the coaxial suit of lantern ring. And the shaft positions of the plurality of rotating rods 12 are connected together through a connecting structure 15 so as to achieve the purpose of synchronous rotation of the plurality of rotating rods 12.

In one implementation of the present disclosure, the locking member is a locking rod 2, the locking rod 2 is connected between the rotating frame 10 and the mounting post 1, and at least one of the rotating frame 10 and the mounting post 1 is detachably connected to the locking rod 2. Namely, the following three implementation modes can be provided: the mounting column 1 and the rotating frame 10 can be detachably connected with the locking rod 2 at the same time; only the rotating frame 10 is detachably connected with the locking rod 2; only the mounting post 1 is detachably connected to the lock lever 2.

The explanation will be given taking an example in which the turret 10 is detachably connected to the lock lever 2. Wherein, the locking pole 2 can be articulated with erection column 1, when the locking pole 2 rotates to the rotation plane of dwang 12 in, can utilize the locking pole 2 to be connected with dwang 12 like this, blocks dwang 12 and continues to rotate to with the locking of rotating turret and erection column 1.

Illustratively, as shown in fig. 5, the locking member is a locking rod 2, one end of the locking rod 2 is hinged with the mounting column 1, and the end surface of the other end of the locking rod 2 is provided with a groove 21 matched with the rotating rod 12. Like this, in dwang 12 rotates the rotation plane to locking pole 2, and when locking pole 2 rotated the rotation plane to dwang 12 in, dwang 12 just can block and establish in recess 21 on locking pole 2 to block dwang 12 and continue to rotate, with the locking of rotating turret and erection column 1.

Wherein, recess 21 on the terminal surface of the other end of lock pole 2 can be the bar groove, and the groove width in bar groove is not less than dwang 12's width to make and rotate the rotation plane to dwang 12 when lock pole 2, can establish dwang 12 card at the bar inslot.

Illustratively, as shown in fig. 6, the locking member is a locking rod 2, one end of the locking rod 2 is hinged with the outer wall of the mounting column 1, and the other end of the locking rod 2 is provided with a hook 22 for hanging on the rotating rod 12. Like this, when dwang 12 rotates to the rotation plane of locking pole 2 in, and locking pole 2 rotates to the rotation plane of dwang 12 in, couple 22 just can be hung on dwang 12 to block dwang 12 and continue to rotate, with the rotating turret and erection column 1 locking.

In the above two implementation manners, compared with the groove 21 formed in the end surface of the lock rod 2, the hook 22 is formed in the end surface of the lock rod 2, so that the lock rod 2 can be more stably lapped on the rotating rod 12 and cannot easily fall off from the rotating rod 12.

Alternatively, the rotation axis of the lock lever 2 is not parallel to the rotation axis of the rotation lever 12. I.e. the axis of rotation of the locking bar 2 may have an angle with the axis of rotation of the turning bar 12 that is different from zero.

Illustratively, as shown in fig. 1, the rotation axis of the lock lever 2 is perpendicular to the rotation axis of the rotation lever 12. I.e. the angle between the axis of rotation of the locking lever 2 and the axis of rotation of the swivelling lever 12 is 90 deg.. And a distance L1 of the lock lever 2 from the hinge point to a point farthest on the lock lever 2 is not smaller than a distance L2 between the hinge point and the rotating lever 12. So that the locking rod 2 can contact the rotating rod 12 when the rotating planes of the rotating rod 12 intersect, and the rotating rod 12 is braked to rotate, thereby locking the rotating frame and the mounting post 1 together; when the lock lever 2 rotates out of the rotation plane of the rotating lever 12, the lock lever 2 and the rotating lever 12 are separated from each other, so that the rotating lever 12 can rotate around the mounting post 1.

For example, the angle between the rotation axis of the lock lever 2 and the rotation axis of the rotating lever 12 may be an acute angle. And the distance of the lock lever 2 from the hinge point to the farthest point on the lock lever 2 is not less than the distance of the hinge point from the other end of the rotating lever 12. So that the locking rod 2 can contact the rotating rod 12 when the rotating planes of the rotating rod 12 intersect, and the rotating rod 12 is braked to rotate, thereby locking the rotating frame and the mounting post 1 together; when the lock lever 2 rotates out of the rotation plane of the rotating lever 12, the lock lever 2 and the rotating lever 12 are separated from each other, so that the rotating lever 12 can rotate around the mounting post 1.

Among the above-mentioned two kinds of implementation, the contained angle that compares between the axis of rotation of lock pole 2 and the axis of rotation of dwang 12 is the acute angle, and the axis of rotation of lock pole 2 can reduce the length of lock pole 2 with the axis of rotation of dwang 12 is perpendicular to the furthest to save processing material, reduce cost of manufacture.

In other implementation manners of the present disclosure, the locking member may also be a hinge, one end of the hinge is connected to the mounting post 1, and the other end of the hinge may be provided with a hook 22, so that when the rotating rod 12 needs to be controlled to stop rotating, the hook 22 of the hinge is overlapped on the rotating rod 12, and the mounting post 1 is connected to the rotating rod 12.

In the embodiment of the present disclosure, as shown in fig. 1, an operation hole 23 is disposed in the middle of the locking rod 2, and a non-zero included angle is formed between a central axis of the operation hole 23 and a central axis of the mounting post 1. I.e. the centre axis of the access hole 23 is not parallel to the centre axis of the mounting post. Because bird repellent device is installed on the cross arm of shaft tower, and bird repellent device is located the eminence promptly, technical staff need use tools such as brake-pulling pole to push against locking pole 2 and rotate on erection column 1 when control locking pole 2 rotates. Set up handle hole 23 back on locking pole 2, the technical staff of being convenient for uses tools such as brake pull rod on ground to insert in handle hole 23, can apply vertical ascending thrust to locking pole 2 to promote locking pole 2 to rotate, reduce the operation degree of difficulty, facilitate the use.

The operation hole 23 may be a through hole formed in the shaft body of the lock lever 2, or the operation hole 23 may be a through hole formed in a plate, and the plate is connected to the shaft body of the lock lever 2, so that the lock lever 2 also has the operation hole 23.

In another implementation of the present disclosure, as shown in fig. 1, the nut 6 is threaded onto the mounting post 1, the mounting post 1 has a shoulder 14, and the turret 10 is positioned between the shoulder 14 and the nut 6.

Illustratively, one end of the mounting post 1 may be provided with an external thread, through which the nut 6 is screwed with the mounting post 1. Wherein, the other end of the external thread near the mounting post 1 is provided with a shaft shoulder 14, and the rotating frame 10 can be prevented from sliding on the mounting post 1 by the shaft shoulder 14.

When the nut 6 is used for controlling the rotating frame and the mounting column 1 to be locked, the nut 6 can be screwed into the external thread of the mounting column 1 from one end of the mounting column 1, and the nut 6 is screwed to abut against the rotating ring 11 of the rotating frame 10, so that the friction force which needs to be overcome when the rotating ring 11 rotates is increased, the rotating rod 12 is blocked from rotating, and the rotating frame 10 and the mounting column 1 are locked.

Optionally, as shown in fig. 1, the bird repelling device further includes an installation base, the installation base has a first side plate 31 and a second side plate 32 which are parallel and opposite, and a connecting side plate 33 which connects the first side plate 31 and the second side plate 32, the first side plate 31 and the second side plate 32 enclose a cross arm accommodating groove 34, the first side plate 31 is connected with one end of the installation column 1, a screw hole is formed in the second side plate 32, and a top thread 4 which is connected with a thread is arranged in the screw hole. In this embodiment, the bird repellent device is installed on the cross arm of shaft tower through the installation base, and the cross arm on the shaft tower is the angle steel usually, when installing the bird repellent device, presss from both sides first curb plate 31 and second curb plate 32 on one curb plate of angle steel, namely make the curb plate of angle steel be in first curb plate 31 and second curb plate 32 enclose into cross arm holding tank 34 in, then twist jackscrew 4 and make jackscrew 4 move towards the direction of first curb plate 31, offset with the curb plate of angle steel to fix the angle steel in cross arm holding tank 34.

The number of the jackscrews 4 may be one or more, and this embodiment is not limited.

Optionally, the mounting base further has a stop side plate 35 parallel to and opposite to the connecting side plate 33, the stop side plate 35 is connected to the first side plate 31, the second side plate 32 is located between the connecting side plate 33 and the stop side plate 35, and the length of the first side plate 31 is greater than that of the second side plate 32 in the direction from the connecting side plate 33 to the stop side plate 35. Because a side plate of the angle steel is installed in the cross arm accommodating groove 34, namely, the other side plate of the angle steel is positioned outside the cross arm space, the installation base falls off from the angle steel after the jackscrew 4 is prevented from loosening. Set up the length of first curb plate 31 into being longer than second curb plate 32, and be good at the one end of second curb plate 32 at first curb plate 31 and set up backstop curb plate 35, like this when the angle steel is installed to cross arm holding tank 34 back, a curb plate clamp except the angle steel is established between first curb plate 31 and second curb plate 32, another curb plate of angle steel also can offset with backstop curb plate 35, even like this the not hard up problem appears in jackscrew 4, support the angle steel through backstop curb plate 35, make the mount base be difficult to drop from the angle steel, improve the reliability of mount base.

Because the bird repelling device in the related art needs to be installed after power failure during installation, or installed in a live-line work mode, the installation after power failure can affect the power transmission efficiency of a power transmission line, and live-line work has the problems of safety risk and high operation and construction cost.

As shown in fig. 7, the jackscrew 4 includes a screw 41 and a mounting tube 42 coaxially connected to the screw 41, the mounting tube 42 has a closed end and an open end opposite to each other, the closed end of the mounting tube 42 is connected to the screw 41, the open end of the mounting tube 42 has a strip-shaped groove 43 extending toward the closed end, and the strip-shaped groove 43 penetrates through the wall of the mounting tube 42. The side edge of the strip-shaped groove 43 may be further provided with a locking groove 44, and the locking groove 44 penetrates through the wall of the installation cylinder 42.

This kind of jackscrew 4 need cooperate corresponding brake pull rod 51 to use, wherein the one end position of brake pull rod 51 is provided with along the spacing arch 52 of the radial extension of brake pull rod 51, when brake pull rod 51 and jackscrew 4 cooperate, insert the one end that has spacing arch 52 of brake pull rod 51 in the installation section of thick bamboo 42 from the open end of mounting hole earlier, and the cartridge in-process, spacing arch 52 inserts the installation section of thick bamboo 42 along strip groove 43 with brake pull rod 51 together inside, when waiting that spacing arch 52 marchs to the position of locking groove 44, rotate brake pull rod 51 and make spacing arch 52 march to locking groove 44, thereby restrict brake pull rod 51 in installation section of thick bamboo 42.

When the installation base with the jackscrew 4 is installed on the angle steel, firstly, the brake pull rod 51 can be installed in the installation cylinder 42 of the jackscrew 4, then a technician controls the brake pull rod 51 underground to send the installation base to the position of the angle steel, and after the angle steel enters the cross arm accommodating groove 34, the brake pull rod 51 is controlled to rotate so as to drive the jackscrew 4 to rotate on the second side plate 32, so that the jackscrew 4 is abutted to the side plates of the angle steel, and the angle steel is fixed in the cross arm accommodating groove 34. When the installation base with the jackscrew 4 is installed, the bird repelling device which can be installed only by using the brake pull rod 51 is needed, the installation cost of the bird repelling device is saved, power failure operation is not needed, and the power transmission efficiency of a power transmission line is not influenced.

The installation process of the bird repelling device provided by the embodiment of the disclosure is as follows: the locking piece is clamped on the rotating rod 12, and then the two jackscrews 4 are screwed to be flush with the side surface of the second side plate 32. During installation, the brake pull rod 51 is inserted into one installation barrel 42 of the two jackscrews 47, the bird repelling device is conveyed to a cross arm angle steel part needing to be installed with the bird repelling device through the brake pull rod 51, so that the cross arm angle steel is positioned in the cross arm accommodating groove 34 of the installation base, then the cross arm angle steel is limited in the installation base through the stop side plate 35 of the installation base, and then the two jackscrews 4 are screwed through the brake pull rod 51, so that the bird repelling device is firmly installed. After installation, the brake pull rod 51 is inserted into the operation hole 23 of the locking piece to control the mutual separation of the locking piece and the rotating rod 12, so that the bird repelling device can be recovered to operate. When the bird repelling device needs to be controlled to stop running, the brake pull rod 51 is inserted into the operation hole 23 of the locking piece, so that the locking piece is clamped on the rotating rod 12, and the bird repelling device stops running.

The above description is meant to be illustrative of the principles of the present disclosure and not to be taken in a limiting sense, and any modifications, equivalents, improvements and the like that are within the spirit and scope of the present disclosure are intended to be included therein.

Claims

1. A bird repellent device, its characterized in that, bird repellent device includes:

the mounting column (1) is used for being mounted on a cross arm of a tower;

the rotating frame (10) comprises a connecting piece and a plurality of rotating rods (12), the connecting piece is positioned on the mounting column (1), the connecting piece is fixedly connected with the plurality of rotating rods (12), one end of each rotating rod (12) is rotatably connected with the mounting column (1), and the plurality of rotating rods (12) are circumferentially distributed around the mounting column (1) at intervals;

a plurality of fan blades (13) corresponding to the plurality of rotating rods (12) one by one, wherein each fan blade (13) is connected to the other end of the corresponding rotating rod (12);

a locking member for operatively locking the turret (10) and the mounting post (1).

2. A bird repellent device according to claim 1, wherein the locking member is a locking rod (2), the locking rod (2) is connected between the turret (10) and the mounting post (1), and at least one of the turret (10) and the mounting post (1) is detachably connected with the locking rod (2).

3. A bird repellent device according to claim 2, characterized in that one end of the locking lever (2) is hinged to the mounting post (1), and the end face of the other end of the locking lever (2) has a groove (21) which cooperates with the turning lever (12).

4. A bird repellent device according to claim 2, wherein the locking member is a locking rod (2), one end of the locking rod (2) is hinged to the mounting post (1), and the other end of the locking rod (2) is provided with a hook (22) for hanging on the rotating rod (12).

5. A bird repelling device according to claim 3 or 4, characterized in that an operation hole (23) is provided in the middle of the locking rod (2), and the central axis of the operation hole (23) is not parallel to the central axis of the mounting post (1).

6. A bird repellent device according to claim 1, wherein the locking member is a nut (6), the nut (6) is screwed on the mounting post (1), the mounting post (1) is provided with a shaft shoulder (14), and the rotating frame (10) is positioned between the shaft shoulder (14) and the nut (6).

7. A bird repellent device according to any one of claims 1 to 4, wherein the connecting piece is a rotating ring (11), the rotating ring (11) is coaxially and rotatably sleeved on the mounting post (1), and one end of each rotating rod (12) is fixed on the outer wall of the rotating ring (11).

8. A bird repellent device according to any one of claims 1 to 4, wherein the fan blades (13) are hemispherical shells.

9. A bird repellent device according to any one of claims 1 to 4, characterized in that the bird repellent device further comprises a mounting base, the mounting base is provided with a first side plate (31) and a second side plate (32) which are parallel and opposite, and a connecting side plate (33) which connects the first side plate (31) and the second side plate (32), the first side plate (31) and the second side plate (32) enclose a cross arm accommodating groove (34), the first side plate (31) is connected with one end of the mounting column (1), a screw hole is formed in the second side plate (32), and a top thread (4) which is in threaded connection is arranged in the screw hole.

10. A bird repellent device according to claim 9, wherein the mounting base further has a stop side plate (35) in parallel opposition to the connecting side plate (33), the stop side plate (35) being connected to the first side plate (31), the second side plate (32) being located between the connecting side plate (33) and the stop side plate (35), the length of the first side plate (31) being greater than the length of the second side plate (32) in the direction from the connecting side plate (33) to the stop side plate (35).

11. A bird repellent device according to claim 9, wherein the jackscrew (4) comprises a screw (41) and a mounting tube (42) coaxially connected with the screw (41), the mounting tube (42) has opposite closed and open ends, the closed end of the mounting tube (42) is connected with the screw (41), the open end of the mounting tube (42) has a strip-shaped groove (43) extending towards the closed end, and the strip-shaped groove (43) penetrates through the wall of the mounting tube (42).

12. A bird repelling device according to claim 11, wherein the strip-shaped groove (43) has a locking groove (44) on the side, and the locking groove (44) penetrates through the wall of the mounting cylinder (42).