Aerial power transmission structure

Abstract

The invention provides an aerial power transmission structure. The aerial power transmission structure comprises a first cable; the second cable and the first cable are arranged at an interval; the protection net extends in the transverse direction and is connected between the first cable and the second cable; the connecting pulley is arranged between the protection net and the first cable and comprises a base frame, a main pulley and a limiting pulley, the main pulley is connected with the base frame, the limiting pulley is movably arranged on the base frame and located below the main pulley, the limiting pulley has a clamping position and a releasing position, and when the limiting pulley is located at the clamping position, the limiting pulley is released from the clamping position; the limiting pulley and the main pulley clamp the first cable, and when the limiting pulley is located at the release position, the limiting pulley and the main pulley loosen the first cable. The technical scheme of the invention can effectively solve the problem that the cable is easy to damage in the prior art.

Description

Technical Field

[0001] The present invention relates to the technical field of high-altitude power transmission, and in particular to an aerial power transmission structure. Background Art

[0002] In the construction of high-altitude long-distance power transmission lines, when encountering important crossings, crossing frames are usually used for protection. However, for scenes such as railways and highways where crossing frames are not suitable, protective nets are required (usually the protective nets are connected to the lowest cables to protect the cables above). The hanging points of traditional protective nets are often connected to the cables using shackles. When the protective nets and cables shake under the influence of wind, the shackles are likely to cause cable wear, posing a safety hazard. Once the cables are damaged, it will seriously endanger the safety of high-altitude workers and the railways and highways below. Summary of the invention

[0003] The main purpose of the present invention is to provide an aerial power transmission structure to solve the problem that the cables in the related art are easily damaged.

[0004] In order to achieve the above-mentioned purpose, the present invention provides an aerial power transmission structure, comprising: a first cable; a second cable, which is spaced apart from the first cable; a protective net, which extends in the lateral direction and is connected between the first cable and the second cable; a connecting pulley, which is arranged between the protective net and the first cable, the connecting pulley comprising a base frame, a main pulley and a limiting pulley, the main pulley is connected to the base frame, the limiting pulley is movably arranged on the base frame and is located below the main pulley, the limiting pulley has a clamping position and a releasing position, when the limiting pulley is at the clamping position, the limiting pulley and the main pulley clamp the first cable, when the limiting pulley is at the releasing position, the limiting pulley and the main pulley release the first cable.

[0005] Furthermore, the connecting pulley also includes a retaining portion, which can keep the limiting pulley in the clamping position.

[0006] Further, the retaining portion comprises an elastic member, a first end of the elastic member is connected to the base frame, and a second end of the elastic member is connected to the limiting pulley to apply an elastic force toward the main pulley to the limiting pulley.

[0007] Furthermore, the connecting pulley also includes a locking structure arranged between the limiting pulley and the base frame, so that the limiting pulley is kept in the released position.

[0008] Furthermore, the base frame includes a mounting plate, the locking structure includes a plug-fitting pin and a plurality of sockets, the plurality of sockets are arranged on the mounting plate at intervals along the vertical direction, and the pin is arranged on the limiting pulley.

[0009] Furthermore, the latch includes a main rod and an elastic expansion section, the first end of the main rod is connected to the limiting pulley, the elastic expansion section is connected to the second end of the main rod, the elastic expansion section has a contracted state and an expanded state, when the elastic expansion section is located in the socket, the elastic expansion section is in a contracted state, when the elastic expansion section passes over the socket, the second end of the main rod is inserted into the socket, the elastic expansion section is in an expanded state and cooperates with the mounting plate stopper to prevent the latch from falling out of the socket.

[0010] Furthermore, the main pulley has a receiving groove for receiving the first cable, and the receiving groove is an open ring groove, and the width of the open ring groove gradually increases in the direction from the groove bottom wall to the groove opening of the open ring groove.

[0011] Furthermore, the main pulley is made of metal material, and has a receiving groove for receiving the first cable, and a groove wall of the receiving groove is provided with a friction reducing layer.

[0012] Furthermore, the connecting pulley also includes a plurality of guide wheels arranged below the first cable, and the plurality of guide wheels are arranged at intervals along the extension direction of the first cable.

[0013] Furthermore, a plurality of guide wheels are located on both sides of the limiting pulley, and the connecting pulley also includes an anti-collision block, which is located on the outer side of the outermost guide wheel.

[0014] By applying the technical solution of the present invention, the first cable and the second cable can realize the power transmission function of the aerial power transmission structure, and can also provide a supporting foundation for the protection net. The protection net extends in the lateral direction and is connected between the first cable and the second cable so that the protection net can block the structures above the first cable and the second cable, thereby preventing these structures from falling below the first cable and the second cable. The protection net is connected to the first cable through a connecting pulley. The connecting pulley includes a base frame, a main pulley and a limiting pulley. The base frame provides an installation foundation for other structures of the connecting pulley. The main pulley is connected to the base frame. The main pulley is located above the first cable. The first cable can support the main pulley and thus support the entire connecting pulley. The limiting pulley is movably arranged On the base frame and below the main pulley, the limit pulley has a clamping position and a release position. When the limit pulley is in the release position, the limit pulley and the main pulley release the first cable, so that the connecting pulley can be removed from the first cable. When the limit pulley is in the clamping position, the limit pulley and the main pulley clamp the first cable, so that the connecting pulley is firmly connected to the first cable. When the protective net and the first cable shake under the influence of wind, the connecting pulley can slide on the first cable. Since both the main pulley and the limit pulley can generate rolling friction with the first cable, compared with the sliding friction generated by the shackle in the related art, the friction force of the rolling friction is smaller, which can effectively avoid the first cable from being damaged. Therefore, the technical solution of the present application can effectively solve the problem that the cable is easily damaged in the related art. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0016] Figure 1 A schematic top view of an embodiment of an aerial power transmission structure according to the present invention is shown;

[0017] Figure 2 Shows Figure 1 A schematic side view of a connecting pulley of an aerial power transmission structure;

[0018] Figure 3 Shows Figure 1 A schematic diagram of a partial structure of a connecting pulley of an aerial power transmission structure;

[0019] Figure 4 Shows Figure 1 A schematic cross-sectional view of a locking structure of a connecting pulley of an aerial power transmission structure.

[0020] The above drawings include the following reference numerals:

[0021] 10. First cable;

[0022] 20. Second cable;

[0023] 30. Protective net;

[0024] 40. Connecting pulley; 41. Base frame; 411. Cross frame; 412. Mounting plate; 42. Main pulley; 43. Limiting pulley; 44. Holding portion; 441. Elastic member; 45. Locking structure; 451. Latch; 4511. Main rod; 4512. Elastic expansion section; 452. Socket; 46. Guide wheel; 47. Anti-collision block. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0027] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0028] like Figure 1 and Figure 2 As shown, the present application provides an aerial power transmission structure. An embodiment of the aerial power transmission structure of the present application includes: a first cable 10, a second cable 20, a protection net 30, and a connecting pulley 40; the second cable 20 is arranged at an interval with the first cable 10; the protection net 30 extends in the transverse direction and is connected between the first cable 10 and the second cable 20; the connecting pulley 40 is arranged between the protection net 30 and the first cable 10, and the connecting pulley 40 includes a base frame 41, a main pulley 42 and a limiting pulley 43, the main pulley 42 is connected to the base frame 41, the limiting pulley 43 is movably arranged on the base frame 41 and is located below the main pulley 42, and the limiting pulley 43 has a clamping position and a releasing position. When the limiting pulley 43 is at the clamping position, the limiting pulley 43 and the main pulley 42 clamp the first cable 10, and when the limiting pulley 43 is at the releasing position, the limiting pulley 43 and the main pulley 42 release the first cable 10.

[0029] By applying the technical solution of this embodiment, the first cable 10 and the second cable 20 can realize the power transmission function of the aerial power transmission structure, and can also provide a supporting basis for the protection net 30. The protection net 30 extends in the lateral direction and is connected between the first cable 10 and the second cable 20 so that the protection net 30 can block the structures above the first cable 10 and the second cable 20, thereby preventing these structures from falling below the first cable 10 and the second cable 20. The protection net 30 is connected to the first cable 10 through a connecting pulley 40. The connecting pulley 40 includes a base frame 41, a main pulley 42 and a limiting pulley 43. The base frame 41 provides an installation basis for other structures of the connecting pulley 40. The main pulley 42 is connected to the base frame 41. The main pulley 42 is located above the first cable 10. The first cable 10 can support the main pulley 42 and thus support the entire connecting pulley 40. The limiting pulley 43 The limit pulley 43 is movably arranged on the base frame 41 and is located below the main pulley 42. The limit pulley 43 has a clamping position and a release position. When the limit pulley 43 is located at the release position, the limit pulley 43 and the main pulley 42 release the first cable 10, so that the connecting pulley 40 can be removed from the first cable 10. When the limit pulley 43 is located at the clamping position, the limit pulley 43 and the main pulley 42 clamp the first cable 10, so that the connecting pulley 40 is firmly connected to the first cable 10. When the protection net 30 and the first cable 10 shake under the influence of wind, the connecting pulley 40 can slide on the first cable 10. Since both the main pulley 42 and the limit pulley 43 can have rolling friction with the first cable 10, compared with the sliding friction caused by the shackle in the related art, the friction force of the rolling friction is smaller, which can effectively avoid the damage of the first cable 10. Therefore, the technical solution of this embodiment can effectively solve the problem that the cable is easily damaged in the related art.

[0030] It should be noted that the "lateral direction" in this article refers to the horizontal direction and the direction with a certain angle to the horizontal direction; the "vertical direction" refers to the vertical direction and the direction with a certain angle to the vertical direction; in this embodiment, there are multiple connection points between the first cable 10 and the protective net 30 and between the second cable 20 and the protective net 30 to ensure the stability of the protective net 30, so a connecting pulley 40 is provided at each connection point.

[0031] like Figure 3 As shown, the connecting pulley 40 also includes a retaining portion 44, which can keep the limiting pulley 43 in the clamping position. Specifically, the retaining portion 44 can quickly switch the limiting pulley 43 from the release position to the clamping position, so that the staff can quickly connect the connecting pulley 40 to the first cable 10, and can also keep the limiting pulley 43 in the clamping position, so that the connecting pulley 40 and the first cable 10 can be stably connected.

[0032] like Figure 3 As shown, the holding portion 44 includes an elastic member 441, a first end of the elastic member 441 is connected to the base frame 41, and a second end of the elastic member 441 is connected to the limiting pulley 43 to apply an elastic force toward the main pulley 42 to the limiting pulley 43. Specifically, the elastic member 441 is a tension spring to apply an upward force to the limiting pulley 43, and the elastic member 441 has the advantages of simple structure and low cost.

[0033] like Figure 2 As shown, the connecting pulley 40 further includes a locking structure 45 disposed between the limiting pulley 43 and the base frame 41, so that the limiting pulley 43 is kept in the released position. Specifically, when using the connecting pulley 40, the user first needs to switch the limiting pulley 43 to the released position, so that a large enough space is formed between the limiting pulley 43 and the main pulley 42 to allow the first cable 10 to enter. At this time, the limiting pulley 43 is required to be kept in the released position, and the setting of the locking structure 45 can meet the above requirements.

[0034] like Figure 2 as well as Figure 4 As shown, the base frame 41 includes a mounting plate 412, and the locking structure 45 includes a plug-in pin 451 and a plurality of plug holes 452, the plurality of plug holes 452 are arranged on the mounting plate 412 at intervals along the vertical direction, and the pin 451 is arranged on the limiting pulley 43. Specifically, the base frame 41 includes a mounting plate 412 and a cross frame 411, the cross frame 411 extends along the extension direction of the first cable 10, the mounting plate 412 extends in the vertical direction, the plurality of plug holes 452 are arranged on the mounting plate 412 at intervals along the vertical direction, and the pin 451 is arranged on the limiting pulley 43, and the size of the space formed between the limiting pulley 43 and the main pulley 42 is controlled by the pin 451 cooperating with different plug holes 452, so that the first cables 10 of different specifications and sizes can enter the space, thereby increasing the versatility of the connecting pulley 40.

[0035] like Figure 4As shown, the latch 451 includes a main rod 4511 and an elastic expansion section 4512. The first end of the main rod 4511 is connected to the limiting pulley 43, and the elastic expansion section 4512 is connected to the second end of the main rod 4511. The elastic expansion section 4512 has a contracted state and an expanded state. When the elastic expansion section 4512 is located in the socket 452, the elastic expansion section 4512 is in a contracted state. When the elastic expansion section 4512 passes over the socket 452, the second end of the main rod 4511 is inserted into the socket 452, the elastic expansion section 4512 is in an expanded state and cooperates with the stopper of the mounting plate 412 to prevent the latch 451 from falling out of the socket 452. Specifically, the elastic expansion section 4512 is made of elastic plastic and is provided with a block at one end away from the main rod 4511. The cooperation between the pin 451 and different sockets 452 represents that the limiting pulley 43 is in the released position. When the pin 451 needs to be inserted into the socket 452 or removed from the socket 452, the elastic expansion section 4512 is in a contracted state. At this time, the outer contour of the elastic expansion section 4512 is within the range of the socket 452 so that the pin 451 can be inserted and removed; when the pin 451 needs to be stably inserted into the socket 452, the elastic expansion section 4512 is first allowed to pass over the socket 452, and then the elastic expansion section 4512 is in an expanded state under the action of its own elastic force, so that the block on the elastic expansion section 4512 cooperates with the stopper of the mounting plate 412 to prevent the pin 451 from escaping from the socket 452.

[0036] In addition, in this embodiment, the main pulley 42 has a receiving groove for receiving the first cable 10, and the receiving groove is an open ring groove, and the width of the open ring groove gradually increases in the direction from the groove bottom wall to the groove opening of the open ring groove. Specifically, the width of the open ring groove refers to the distance between the side walls of the open ring groove, and the width of the open ring groove gradually increases so that the open ring groove can be suitable for first cables 10 of different specifications and sizes, and the side walls of the open ring groove can be stably abutted against the first cables 10 of different specifications and sizes.

[0037] In addition, in the present embodiment, the main pulley 42 is made of a metal material, and the main pulley 42 has a receiving groove for receiving the first cable 10, and the groove wall of the receiving groove is provided with a friction-reducing layer. Specifically, the main pulley 42 is made of a metal material, and can be made of aluminum. The metal material can ensure the structural strength of the main pulley 42. The groove wall of the receiving groove refers to the side wall and the bottom wall of the receiving groove. The provision of the friction-reducing layer reduces the friction between the main pulley 42 and the first cable 10. The friction-reducing layer can be made of an organic material, such as polytetrafluoroethylene, polyethylene, polymethyl methacrylate, polystyrene, polyether sulfide, polycarbonate, polypropylene, etc.

[0038] like Figure 2As shown, the connecting pulley 40 further includes a plurality of guide wheels 46 disposed below the first cable 10, and the plurality of guide wheels 46 are disposed at intervals along the extension direction of the first cable 10. Specifically, the guide wheels 46 can play a guiding role so that the movement of the connecting pulley 40 is smoother.

[0039] like Figure 2 As shown, a plurality of guide wheels 46 are located on both sides of the limiting pulley 43, and the connecting pulley 40 further includes an anti-collision block 47, which is located on the outer side of the outermost guide wheel 46. Specifically, the provision of the anti-collision block 47 can prevent the guide wheels 46 between two adjacent connecting pulleys 40 from directly colliding and causing potential threats.

[0040] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0041] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0042] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0043] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An aerial power transmission structure, characterized in that: include: A first cable (10); a second cable (20) arranged at a distance from the first cable (10); a protective net (30) extending in a transverse direction and connected between the first cable (10) and the second cable (20); A connecting pulley (40) is arranged between the protection net (30) and the first cable (10), and the connecting pulley (40) comprises a base frame (41), a main pulley (42) and a limiting pulley (43). The main pulley (42) is connected to the base frame (41), and the limiting pulley (43) is movably arranged on the base frame (41) and located below the main pulley (42). The limiting pulley (43) has a clamping position and a releasing position. When the limiting pulley (43) is located at the clamping position, the limiting pulley (43) and the main pulley (42) clamp the first cable (10), and when the limiting pulley (43) is located at the releasing position, the limiting pulley (43) and the main pulley (42) release the first cable (10).

2. The aerial power transmission structure according to claim 1, characterized in that: The connecting pulley (40) further comprises a retaining portion (44), and the retaining portion (44) is capable of retaining the limiting pulley (43) in the clamping position.

3. The aerial power transmission structure according to claim 2, characterized in that: The retaining portion (44) comprises an elastic member (441), a first end of the elastic member (441) being connected to the base frame (41), and a second end of the elastic member (441) being connected to the limiting pulley (43) so as to apply an elastic force to the limiting pulley (43) towards the main pulley (42).

4. The aerial power transmission structure according to claim 1, characterized in that: The connecting pulley (40) further comprises a locking structure (45) arranged between the limiting pulley (43) and the base frame (41) so as to keep the limiting pulley (43) in the release position.

5. The aerial power transmission structure according to claim 4, characterized in that: The base frame (41) comprises a mounting plate (412), the locking structure (45) comprises a plug-in mating pin (451) and a plurality of plug holes (452), the plurality of plug holes (452) are arranged on the mounting plate (412) at intervals along the vertical direction, and the pin (451) is arranged on the limiting pulley (43).

6. The aerial power transmission structure according to claim 5, characterized in that: The latch (451) comprises a main rod (4511) and an elastic expansion section (4512). The first end of the main rod (4511) is connected to the limiting pulley (43), and the elastic expansion section (4512) is connected to the second end of the main rod (4511). The elastic expansion section (4512) has a contracted state and an expanded state. When the elastic expansion section (4512) is located in the latch (451), the elastic expansion section (4512) is in the contracted state. When the elastic expansion section (4512) passes over the latch (451), the second end of the main rod (4511) is inserted into the latch (451), the elastic expansion section (4512) is in the expanded state and cooperates with the stopper of the mounting plate (412) to prevent the latch (451) from falling out of the insertion hole (452).

7. The aerial power transmission structure according to any one of claims 1 to 6, characterized in that: The main pulley (42) has a receiving groove for receiving the first cable (10), wherein the receiving groove is an open ring groove, and the width of the open ring groove gradually increases in the direction from the groove bottom wall to the groove opening of the open ring groove.

8. The aerial power transmission structure according to any one of claims 1 to 6, characterized in that: The main pulley (42) is made of a metal material, and has a receiving groove for receiving the first cable (10), and a friction-reducing layer is arranged on the groove wall of the receiving groove.

9. The aerial power transmission structure according to any one of claims 1 to 6, characterized in that: The connecting pulley (40) further comprises a plurality of guide wheels (46) arranged below the first cable (10), wherein the plurality of guide wheels (46) are arranged at intervals along the extension direction of the first cable (10).

10. The aerial power transmission structure according to claim 9, characterized in that: The plurality of guide wheels (46) are located on both sides of the limiting pulley (43), and the connecting pulley (40) further comprises an anti-collision block (47), and the anti-collision block (47) is located on the outer side of the outermost guide wheel (46).

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