A cable intermediate connecting fitting

Abstract

The utility model relates to power transmission equipment technical field, the utility model provides a cable intermediate connecting fitting, it includes lower fitting seat, the upper fitting seat is installed to the lower fitting seat top, the lower fitting seat side is fixed with anti -unhooking subassembly, the lower fitting seat and upper fitting seat inner wall are installed with dustproof subassembly, the anti -unhooking subassembly includes base, the base top is fixed with limit sleeve column, the limit sleeve column inner wall sets up with limit slot, the limit slot bottom is fixed with limit tooth ring, the limit slot is connected with the limit column in sliding, through above -mentioned technical scheme, solved the cable intermediate connecting fitting in related art when using, when the cable appears the situation of bending or swinging, the fitting will appear the situation of loosening due to swinging, thereby leading to the contact surface change of the fitting inner wall and cable, thereby make the contact resistance of fitting inside increase, lead to the local overheating of cable, thereby accelerate the technical problem of cable insulation ageing condition.

Description

Technical Field

[0001] This utility model relates to the field of power transmission equipment technology, specifically to a cable intermediate connection fitting. Background Technology

[0002] With the continuous increase in global electricity demand and the ongoing expansion of power grid construction, the demand for cable intermediate connection hardware is also growing. Particularly in the high-voltage and ultra-high-voltage transmission sectors, cable intermediate connection hardware, as a key component for connecting cables of different cross-sections, is experiencing particularly strong market demand. With the continuous development of new materials technology, the material properties of cable intermediate connection hardware are also constantly improving. For example, the application of new materials such as high-strength aluminum alloys and carbon fiber composite materials makes cable intermediate connection hardware lighter, more durable, and possesses better corrosion resistance.

[0003] Chinese Patent CN222750123U discloses a cable intermediate connection fitting, relating to the field of connection fitting technology. It includes a connection fitting body with adjusting bolts symmetrically arranged at both ends. A nut is threaded onto the outer side of each adjusting bolt, and a placement ring is connected to the side of the nut. The adjusting bolt passes through the placement ring, and a fastening ring passes through the interior of the placement ring. An adjusting nut is located on the outer side of the fastening ring. This invention places the cable inside the placement ring, with the fastening ring positioned above the cable. The fastening ring, passing through the placement ring and using the adjusting nut, facilitates height adjustment according to cable size, better securing the cable. Rotating the nut moves the placement ring on the adjusting bolt, thereby moving the cable further into the connection fitting body. This convenient operation eliminates the need for manual cable handling and connection, reducing labor and time costs and improving work efficiency.

[0004] When the cable intermediate connection hardware in the relevant technology is used, if the cable bends or swings, the hardware may become loose due to the swing, which will change the contact surface between the inner wall of the hardware and the cable. This will increase the contact resistance inside the hardware, causing local overheating of the cable and accelerating the aging of the cable insulation. Utility Model Content

[0005] To overcome the above-mentioned defects, this utility model provides a cable intermediate connection hardware, which solves the technical problem that when the cable is bent or swinging during use, the hardware will loosen due to the swinging, which will change the contact surface between the inner wall of the hardware and the cable, thereby increasing the contact resistance inside the hardware, causing local overheating of the cable, and thus accelerating the aging of the cable insulation.

[0006] According to one aspect, at least one embodiment of the present invention provides a cable intermediate connection hardware, comprising: a lower hardware seat, an upper hardware seat mounted on the top of the lower hardware seat, an anti-loosening component fixed on the side of the lower hardware seat, and dustproof components installed on the inner walls of the lower hardware seat and the upper hardware seat;

[0007] The anti-loosening component includes a base, a limiting sleeve fixed at the top of the base, a limiting groove formed on the inner wall of the limiting sleeve, a limiting toothed ring fixed at the bottom of the limiting groove, a limiting post slidably connected in the limiting groove, a gear fixed at the bottom of the limiting post, and a threaded groove formed at the end of the limiting post away from the gear, on which a limiting nut is threadedly installed.

[0008] For example, in at least one embodiment of the present invention, a cable intermediate connection hardware is provided, which further includes: a connecting block is fixed on the side of both the lower hardware seat and the upper hardware seat, and the connecting block has a slot with the same diameter as the limiting post.

[0009] For example, in at least one embodiment of the present invention, a cable intermediate connecting hardware is provided, which further includes: two sets of connecting blocks are provided, and the two sets of connecting blocks are respectively fixed to the sides of the lower hardware seat and the upper hardware seat.

[0010] For example, in at least one embodiment of the present invention, a cable intermediate connection fitting is provided, which further includes: an extension ring fixed on the back of the lower fitting seat and the upper fitting seat, a slot is provided in the extension ring, a magnetic block is fixed on the inner wall of the slot, a collar is engaged in the slot, and a locking block is fixed on the inner wall of the collar.

[0011] For example, in at least one embodiment of the present invention, a cable intermediate connection hardware is provided, which further includes: two sets of extension rings, the two sets of extension rings being fixed to the back of the lower hardware seat and the upper hardware seat respectively.

[0012] For example, in at least one embodiment of the present invention, a cable intermediate connection fitting is provided, which further includes: the dustproof component includes a mounting ring, the mounting ring has a mounting groove on its side, a thin film protective layer is fixed in the mounting groove, and a fixing sticker is fixed at the other end of the thin film protective layer.

[0013] For example, in at least one embodiment of the present invention, a cable intermediate connection hardware is provided, which further includes: an extension groove is provided on the front side of the lower hardware seat, and the fixing sticker is pasted in the extension groove.

[0014] For example, in at least one embodiment of the present invention, a cable intermediate connection fitting is provided, which further includes: an easy-tear layer is provided on the surface of the thin film protective layer near the mounting groove, and the mounting groove is L-shaped.

[0015] The beneficial effects of the embodiments of this utility model are as follows:

[0016] In this invention, by setting an anti-loosening component, the upper and lower sets of connecting hardware are more securely installed when fixing the cable. This prevents the connecting hardware from shifting due to prolonged use and external factors, which could alter the contact surface between the inner wall of the hardware and the cable, increasing the internal contact resistance and thus extending the cable's lifespan. Simultaneously, the fastening device secures the hardware, preventing it from loosening or shifting due to the cable's swaying force. This further enhances the installation stability of the hardware. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this utility model and these drawings without any creative effort.

[0018] Figure 1 This is a schematic diagram of the external structure of the protective cover in one embodiment of the present invention;

[0019] Figure 2 This is a side view of the adjustment component in one embodiment of the present invention.

[0020] Figure 3 This is a side cross-sectional view of the adjustment component in one embodiment of the present invention;

[0021] Figure 4 This is a side cross-sectional view of the dustproof component in one embodiment of the present invention;

[0022] Figure 5 This is a schematic diagram of the back structure of the dustproof component in one embodiment of the present invention.

[0023] In the diagram: 1. Lower hardware base; 2. Anti-loosening component; 21. Base; 22. Limiting sleeve; 23. Limiting groove; 24. Limiting toothed ring; 25. Limiting post; 26. Gear; 27. Threaded groove; 28. Limiting nut; 29. ​​Connecting block; 210. Extension ring; 211. Slot; 212. Magnetic block; 213. Collar; 214. Locking block; 3. Dustproof component; 31. Mounting retaining ring; 32. Mounting groove; 33. Film protective layer; 34. Fixing sticker; 35. Extension groove; 36. Easy-tear layer; 4. Upper hardware base. Detailed Implementation

[0024] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit its scope.

[0025] To keep the drawings concise, only the parts relevant to the utility model are shown schematically in each drawing; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of the components with the same structure or function is schematically shown, or only one is labeled. In this document, "a" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0026] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0027] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0028] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0029] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0030] like Figures 1-3As shown, it illustrates a cable intermediate connection hardware in one embodiment of the present invention, with a lower hardware seat 1, an upper hardware seat 4 installed on the top of the lower hardware seat 1, an anti-loosening component 2 fixed on the side of the lower hardware seat 1, and a dustproof component 3 installed on the inner walls of the lower hardware seat 1 and the upper hardware seat 4.

[0031] The anti-loosening component 2 includes a base 21, a limiting sleeve 22 fixed to the top of the base 21, a limiting groove 23 opened on the inner wall of the limiting sleeve 22, a limiting toothed ring 24 fixed to the bottom of the limiting groove 23, a limiting post 25 slidably connected in the limiting groove 23, a gear 26 fixed to the bottom of the limiting post 25, a threaded groove 27 opened at the end of the limiting post 25 away from the gear 26, a limiting nut 28 threadedly installed on the threaded groove 27, teeth provided on the inner side of the limiting toothed ring 24, the limiting toothed ring 24 matching the gear 26, a limiting ring sleeved on the top of the limiting nut 28, the limiting ring being used to prevent the limiting nut 28 from being dislodged from the threaded groove 27 due to external force.

[0032] In some examples, connecting blocks 29 are fixed to the sides of both the lower hardware base 1 and the upper hardware base 4. The connecting blocks 29 have slots with the same diameter as the limiting post 25. The inner wall of the slots has self-locking threads, which allows the limiting post 25 to be manually rotated when it is inserted into the limiting sleeve post 22. This causes the gear 26 at the bottom of the limiting post 25 to rotate to an angle that matches the limiting gear ring 24, thus facilitating the limiting.

[0033] In some examples, there are two sets of connecting blocks 29, which are fixed to the sides of the lower hardware seat 1 and the upper hardware seat 4 respectively. The connecting blocks 29 are used to tightly fix the lower hardware seat 1 and the upper hardware seat 4, so that the lower hardware seat 1 and the upper hardware seat 4 can be stably installed on the cable.

[0034] In some examples, an extension ring 210 is fixed to the back of the lower hardware base 1 and the upper hardware base 4. A slot 211 is provided in the extension ring 210. A magnetic block 212 is fixed to the inner wall of the slot 211. A collar 213 is engaged in the slot 211. A locking block 214 is fixed to the inner wall of the collar 213. The side of the locking block 214 is provided with a magnetic surface that matches the magnetic block 212. This makes the locking block 214 more stable in the slot 211 and also prevents the locking block 214 from falling out of the slot 211 due to external shaking.

[0035] In some examples, two sets of extension rings 210 are provided. The two sets of extension rings 210 are fixed to the back of the lower hardware seat 1 and the upper hardware seat 4 respectively. The provision of two sets of extension rings 210 facilitates the disassembly of the lower hardware seat 1 and the upper hardware seat 4, and can further improve the reinforcement effect of the lower hardware seat 1 and the upper hardware seat 4.

[0036] For example, such as Figure 3As shown, first, place the lower hardware seat 1 at the bottom of the cable connection, then snap the upper hardware seat 4 onto the top of the lower hardware seat 1. Next, insert the limiting pin 25 into the connecting block 29 and press it down forcefully, causing the self-locking thread on the inner wall of the connecting block 29 to match the ring in the limiting pin 25, thus moving the gear 26 to the top of the limiting gear ring 24. Then, by rotating the limiting pin 25, the gear 26 at the bottom of the limiting pin 25 rotates to an angle matching the limiting gear ring 24. Finally, insert the gear 26 into the limiting gear ring 24, locking the gear 26 and the limiting gear ring 24 together. The limiting nut 28 is threaded onto the limiting post 25 in the threaded groove 27. Then, the collar 213 is inserted into the groove 211 in the extension ring 210 through the corresponding locking block 214, so that the magnetic surface on the side of the locking block 214 attracts the magnetic block 212 on the inner wall of the groove 211. This allows the collar 213 to limit and fix the extension ring 210 on the lower hardware seat 1 and the upper hardware seat 4, so that the lower hardware seat 1 and the upper hardware seat 4 can be stably installed on the cable, and at the same time, it can prevent the cable from swinging due to external force, which would cause the connection between the lower hardware seat 1 and the upper hardware seat 4 to become loose.

[0037] like Figures 4-5 As shown, this invention illustrates a cable intermediate connection fitting in another embodiment of the present invention. The dustproof component 3 includes a mounting ring 31 with a mounting groove 32 on its side. A thin film protective layer 33 is fixed in the mounting groove 32, and a fixing sticker 34 is fixed at the other end of the thin film protective layer 33. An adhesive layer is provided on the inner side of the fixing sticker 34, which is used to attach the fixing sticker 34 to the extension groove 35 when the lower fitting seat 1 and the upper fitting seat 4 are not in use. The thin film protective layer 33 is used to protect the inner walls of the upper fitting seat 4 and the lower fitting seat 1 from dust, so that the inner walls of the upper fitting seat 4 and the lower fitting seat 1 will not be contaminated with dust before the cable is installed and clamped, thus avoiding the influence of dust on the cable resistance.

[0038] In some examples, the lower hardware base 1 has an extension groove 35 on the front side, and the fixing sticker 34 is pasted in the extension groove 35. The fixing sticker 34 is used to fix the film protective layer 33, thereby preventing the film protective layer 33 from peeling up due to the hardware being placed for too long.

[0039] In some examples, the protective film layer 33 has an easy-tear layer 36 on the surface near the mounting groove 32. The mounting groove 32 is L-shaped. The easy-tear layer 36 makes it easy for workers to tear the protective film layer 33 from the mounting groove 32 when using hardware for installation.

[0040] For example, such as Figure 5As shown, during the production of the lower hardware base 1 and the upper hardware base 4, mounting rings 31 are installed on the back of the lower hardware base 1 and the upper hardware base 4. A thin film protective layer 33 is fixed in the mounting groove 32 inside the mounting ring 31. The diameter of the thin film protective layer 33 is the same as the inner wall diameter of the lower hardware base 1 and the upper hardware base 4. When it is necessary to use the lower hardware base 1 and the upper hardware base 4 to install and connect the cable, the worker can pry the fixing sticker 34 out of the extension groove 35 and, by holding the fixing sticker 34, tear the thin film protective layer 33 from the mounting ring 31 through the easy-tear layer 36. This causes the thin film protective layer 33 to break from the easy-tear layer 36, and then the thin film protective layer 33 detaches from the inner wall of the lower hardware base 1 and the upper hardware base 4. Then the worker can separate the lower hardware base 1 and the upper hardware base 4 and fix the cable.

[0041] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A cable intermediate connection fitting, characterized in that, include: The lower hardware seat (1) is equipped with an upper hardware seat (4) on its top. The lower hardware seat (1) is fixed with an anti-loosening component (2) on its side. The lower hardware seat (1) and the upper hardware seat (4) are equipped with dustproof components (3). The anti-loosening component (2) includes a base (21), a limiting sleeve (22) is fixed at the top of the base (21), a limiting groove (23) is opened on the inner wall of the limiting sleeve (22), a limiting toothed ring (24) is fixed at the bottom of the limiting groove (23), a limiting post (25) is slidably connected in the limiting groove (23), a gear (26) is fixed at the bottom of the limiting post (25), a threaded groove (27) is opened at the end of the limiting post (25) away from the gear (26), and a limiting nut (28) is threaded on the threaded groove (27).

2. The cable intermediate connection hardware according to claim 1, characterized in that, Both the lower hardware seat (1) and the upper hardware seat (4) are fixed with connecting blocks (29) on their sides. The connecting blocks (29) have slots with the same diameter as the limiting post (25).

3. The cable intermediate connection fitting according to claim 2, characterized in that, The connecting block (29) is provided in two sets, and the two sets of connecting blocks (29) are respectively fixed on the sides of the lower hardware seat (1) and the upper hardware seat (4).

4. A cable intermediate connection fitting according to claim 1, characterized in that, The lower hardware base (1) and the upper hardware base (4) are fixed with an extension ring (210) on their back sides. The extension ring (210) has a slot (211) in it. A magnetic block (212) is fixed to the inner wall of the slot (211). A collar (213) is locked in the slot (211). A locking block (214) is fixed to the inner wall of the collar (213).

5. A cable intermediate connection fitting according to claim 4, characterized in that, The extension ring (210) is provided in two sets, and the two sets of extension rings (210) are respectively fixed on the back of the lower hardware seat (1) and the upper hardware seat (4).

6. A cable intermediate connection fitting according to claim 1, characterized in that, The dustproof component (3) includes a mounting ring (31), and a mounting groove (32) is provided on the side of the mounting ring (31). A thin film protective layer (33) is fixed in the mounting groove (32), and a fixing sticker (34) is fixed at the other end of the thin film protective layer (33).

7. A cable intermediate connection fitting according to claim 6, characterized in that, The lower hardware base (1) has an extension groove (35) on its front side, and the fixing sticker (34) is pasted in the extension groove (35).

8. A cable intermediate connection fitting according to claim 6, characterized in that, The protective film layer (33) has an easy-tear layer (36) on the surface near the mounting groove (32), and the mounting groove (32) is L-shaped.

Images