Side expansion base ball head for electric power combined cabinet

Abstract

The utility model discloses a side expansion base ball head for an electric power combined cabinet. The diameter of a first connecting end of an aluminum mounting section is gradually reduced to form a frustum shape, and the diameter of a second connecting end of an aluminum inserting section is gradually reduced to form a frustum shape; a first frustum-shaped hole and a second frustum-shaped hole are respectively formed in two end surfaces in the length direction of the copper sheath section; according to the side-expanded base ball head for the electric power combined cabinet provided by the utility model, due to the existence of the first frustum-shaped hole and the second frustum-shaped hole in the sheath section, the material cost can be reduced. Through frustum-shaped arrangement on the installation section and the insertion section, the installation section and the insertion section correspond to the first frustum-shaped hole and the second frustum-shaped hole in the sheath section. And the mounting section can continuously form high-quality contact with the first frustum-shaped hole of the sheath section, and the inserting section can continuously form high-quality contact with the second frustum-shaped hole of the sheath section, so that friction welding is smoothly implemented. According to the friction welding structure, the size in the length direction of the side expansion base ball head is large, and therefore the structural strength in the length direction is high.

Description

Technical Field

[0001] The utility model relates to the field of side-expanding base ball heads, and particularly to a side-expanding base ball head for power cabinet combination. Background Art

[0002] Power cabinet combination refers to the parallel combination form of power equipment or systems. In the field of power systems, in order to improve the power supply capacity or implement a redundant power supply strategy, it is usually necessary to configure multiple power equipment or systems in parallel. This configuration method is defined as "cabinet combination". A side-expanding connector is a device used for side expansion or connection of equipment. In the application scenario of power cabinet combination, its function is to achieve side expansion connection between different equipment or systems, thereby ensuring the realization of the overall function of the power system. As a key component of the power system, the quality and performance of the side-expanding connector used in power cabinet combination have a direct impact on the stable operation of the power grid.

[0003] The side-expanding connector includes a connecting seat and a ball head part, and realizes mechanical connection and electrical connection through the insertion between the two. The ball head part includes three sections in the length direction. The first section is the installation section, which is used to connect a power cabinet; the second section is the sheath section, which is used to sleeved the loose sheath; the third section is the insertion section, and a ball head is arranged on the insertion section, and the connection with the connecting seat is formed through the ball head. Due to the requirements of the application scenario, the materials of the installation section, the sheath section and the insertion section are aluminum, copper and aluminum respectively, so there is a process requirement for friction welding. There is also a large amount of material waste in the processing process, and the force-bearing mode of the entire ball head structure is not conducive to the combination of the friction welding part, resulting in the risk of structural failure. Summary of the Utility Model

[0004] The main purpose of the utility model is to provide a side-expanding base ball head for power cabinet combination, aiming to solve the problems that there is a large amount of material waste in the process of friction welding the side-expanding base ball head, and the force-bearing mode of the entire ball head structure is not conducive to the combination of the friction welding part, resulting in the risk of structural failure.

[0005] To achieve the above purpose, the utility model provides a side-expanding base ball head for power cabinet combination, including:

[0006] An aluminum installation section, an internal threaded hole is arranged at the outer end in the length direction, the inner end is the first connection end, the diameter of the first connection end gradually shrinks to form a frustum shape, and the circumferential wall of the first connection end forms an angle of 2 to 5 degrees with the length direction;

[0007] An aluminum insertion section, the inner end in the length direction is the second connection end, the outer end is a connecting ball head, the diameter of the second connection end gradually shrinks to form a frustum shape, and the circumferential wall of the first connection end forms an angle of 2 to 5 degrees with the length direction;

[0008] A copper sheath section is provided with a first frustum-shaped hole and a second frustum-shaped hole on two end faces in the length direction. The inner walls of the first frustum-shaped hole and the second frustum-shaped hole form an angle of 2 to 5 degrees with the length direction. A plurality of snap rings are arranged at intervals on the outer circumference of the sheath section in the length direction;

[0009] Wherein, the circumference of the first connection end of the installation section is friction-welded to the circumference of the inner wall of the first frustum-shaped hole, and the circumference of the second connection end of the insertion section is friction-welded to the circumference of the inner wall of the second frustum-shaped hole.

[0010] Further, the diameter of the outer end of the installation section is larger than the diameter of the sheath section.

[0011] Further, a plurality of first platform openings are arranged on the circumference of the outer end of the installation section.

[0012] Further, a first gap is formed between the free end of the first connection end and the bottom of the first frustum-shaped hole.

[0013] Further, a second gap is formed between the free end of the second connection end and the bottom of the second frustum-shaped hole.

[0014] Further, a protruding ring is arranged on the outer circumference of the second connection end.

[0015] Further, a plurality of second platform openings are arranged on the circumference of the protruding ring.

[0016] Further, a third gap is formed between the protruding ring and the sheath section in the length direction.

[0017] Further, the circumferential wall of the first connection end forms an angle of 2 to 5 degrees with the length direction, and the inner wall of the first frustum-shaped hole forms an angle of 2 to 5 degrees with the length direction.

[0018] Further, the circumferential wall of the second connection end forms an angle of 2 to 5 degrees with the length direction, and the inner wall of the second frustum-shaped hole forms an angle of 2 to 5 degrees with the length direction.

[0019] The ball head of the side expansion base for power cabinet combination provided by the utility model has a first frustum-shaped hole and a second frustum-shaped hole respectively arranged on two end faces in the length direction of the copper sheath section. Due to the existence of the first frustum-shaped hole and the second frustum-shaped hole, the material cost of the sheath section can be reduced. Through the frustum-shaped settings on the installation section and the insertion section, corresponding to the first frustum-shaped hole and the second frustum-shaped hole on the sheath section. Thus, during the friction welding process, the installation section can continuously form high-quality contact with the first frustum-shaped hole of the sheath section, and the insertion section can continuously form high-quality contact with the second frustum-shaped hole of the sheath section, so that the friction welding can be smoothly implemented. And the friction welding structures formed at the two places of the above-mentioned sheath section are larger in size in the length direction of the ball head of the side expansion base, so the structural strength in the length direction is higher, providing strength characteristics for use. Brief Description of the Drawings

[0020] Figure 1 is a schematic diagram of the installation section in the ball head of the side expansion base for power cabinet combination of the first embodiment of the utility model;

[0021] Figure 2 is a schematic diagram of the sheath section in the ball head of the side expansion base for power cabinet combination of the first embodiment of the utility model;

[0022] Figure 3 is a sectional schematic diagram of the sheath section in the ball head of the side expansion base for power cabinet combination of the first embodiment of the utility model;

[0023] Figure 4 is a sectional schematic diagram of the ball head of the side expansion base for power cabinet combination of the first embodiment of the utility model;

[0024] Figure 5 is a schematic diagram of the installation section in the ball head of the side expansion base for power cabinet combination of the first embodiment of the utility model.

[0025] The realization of the purpose, functional characteristics and advantages of the utility model will be further described with reference to the embodiments and the accompanying drawings. Detailed Embodiment

[0026] It should be understood that the specific embodiments described herein are only used to explain the utility model and are not used to limit the utility model.

[0027] Those skilled in the art of the present technology can understand that, unless specifically stated, the singular forms "a", "an", "the", "above-mentioned" and "this" used herein may also include the plural forms. It should be further understood that the term "comprising" used in the specification of the present utility model means the presence of the described features, integers, steps, operations, elements, units, modules and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, units, modules, components and / or their groups. It should be understood that when we say an element is "connected" or "coupled" to another element, it can be directly connected or coupled to other elements, or there may also be intermediate elements. In addition, the "connection" or "coupling" used herein may include wireless connection or wireless coupling. The phrase "and / or" used herein includes all or any unit and all combinations of one or more associated listed items.

[0028] Those skilled in the art of the present technology can understand that, unless otherwise defined, all terms (including technical terms and scientific terms) used herein have the same meaning as the general understanding of those of ordinary skill in the art to which the present utility model belongs. It should also be understood that terms such as those defined in a general dictionary should be understood to have a meaning consistent with the meaning in the context of the prior art, and will not be interpreted with an idealized or overly formal meaning unless specifically defined as herein.

[0029] Referring to Figures 1 to 5 , in an embodiment of the present utility model, a ball head of a side expansion base for power cabinet combination includes:

[0030] An aluminum installation section 100, with an internal threaded hole 110 provided at the outer end in the length direction, and the inner end being a first connection end 120. The diameter of the first connection end 120 gradually decreases to form a frustum of a cone, and the peripheral wall of the first connection end 120 forms an angle of 2 to 5 degrees with the length direction;

[0031] An aluminum insertion section 200, with the inner end in the length direction being a second connection end 210 and the outer end being a connection ball head 220. The diameter of the second connection end 210 gradually decreases to form a frustum of a cone, and the peripheral wall of the first connection end 120 forms an angle of 2 to 5 degrees with the length direction;

[0032] A copper sheath section 300, with a first frustum-shaped hole 310 and a second frustum-shaped hole 320 provided on the two end faces in the length direction respectively. The inner walls of the first frustum-shaped hole 310 and the second frustum-shaped hole 320 form an angle of 2 to 5 degrees with the length direction, and a plurality of snap rings 330 are arranged at intervals on the outer periphery of the sheath section 300 in the length direction;

[0033] Wherein, the circumferential direction of the first connection end 120 of the installation section 100 is friction-welded to the circumferential direction of the inner wall of the first frustum-shaped hole 310, and the circumferential direction of the second connection end 210 of the insertion section 200 is friction-welded to the circumferential direction of the inner wall of the second frustum-shaped hole 320.

[0034] In the prior art, when friction-welding a side-expanded base ball head on the processing side, there is a large amount of material waste, and the force-bearing mode of the entire ball head structure is not conducive to the combination of the friction-welded part, resulting in an abnormal structural failure.

[0035] The side-expanded base ball head for power cabinet combination provided by the present utility model has an aluminum installation section 100. An internal threaded hole 110 is provided at the outer end in the length direction of the installation section 100, and the installation section 100 is used to connect to a power cabinet. The inner end in the length direction of the installation section 100 is the first connection end 120. The diameter of the first connection end 120 gradually decreases to form a frustum shape. The circumferential wall of the first connection end 120 forms an angle of 1 to 10 degrees with the length direction, so as to meet the processing requirements and the requirements of friction welding.

[0036] The inner end in the length direction of the aluminum insertion section 200 is the second connection end 210. The outer end in the length direction of the aluminum insertion section 200 is a connecting ball head 220. The connecting ball head 220 of the insertion section 200 is used to connect to another power cabinet. The diameter of the second connection end 210 gradually decreases to form a frustum shape, and the circumferential wall of the first connection end 120 forms an angle of 2 to 5 degrees with the length direction.

[0037] On the two end faces in the length direction of the copper sheath section 300, a first frustum-shaped hole 310 and a second frustum-shaped hole 320 are respectively provided. The inner walls of the first frustum-shaped hole 310 and the second frustum-shaped hole 320 form an angle of 2 to 5 degrees with the length direction. The first frustum-shaped hole 310 and the second frustum-shaped hole 320 respectively match the first connection end 120 and the second connection end 210. A plurality of snap rings 330 are arranged at intervals in the length direction on the outer periphery of the sheath section 300, and the snap rings 330 on the sheath section 300 are used to improve the fixing effect with the external sheath. The number of snap rings 330 is two to three, which reduces the processing difficulty while meeting the connection effect. Due to the existence of the first frustum-shaped hole 310 and the second frustum-shaped hole 320, the material cost of the sheath section 300 can be reduced.

[0038] The circumferences of the first connection end 120 of the installation section 100 and the inner wall circumference of the first frustum-shaped hole 310 are friction-welded and connected. The circumferences of the second connection end 210 of the insertion section 200 and the inner wall circumference of the second frustum-shaped hole 320 are friction-welded and connected. Through the frustum-shaped settings on the installation section 100 and the insertion section 200, they correspond to the first frustum-shaped hole 310 and the second frustum-shaped hole 320 on the sheath section 300. Thus, during the friction welding process, the installation section 100 can continuously form high-quality contact with the first frustum-shaped hole 310 of the sheath section 300, and the insertion section 200 can continuously form high-quality contact with the second frustum-shaped hole 320 of the sheath section 300, so that the friction welding can be smoothly implemented. And the friction welding structures formed at the two places on the above-mentioned sheath section 300 have larger dimensions in the length direction of the side-expanded base ball head, so the structural strength in the length direction is higher, providing strength characteristics for use.

[0039] In summary, on the two end faces in the length direction of the copper sheath section 300, the first frustum-shaped hole 310 and the second frustum-shaped hole 320 are respectively arranged. Due to the existence of the first frustum-shaped hole 310 and the second frustum-shaped hole 320, the material cost of the sheath section 300 can be reduced. Through the frustum-shaped settings on the installation section 100 and the insertion section 200, they correspond to the first frustum-shaped hole 310 and the second frustum-shaped hole 320 on the sheath section 300. Thus, during the friction welding process, the installation section 100 can continuously form high-quality contact with the first frustum-shaped hole 310 of the sheath section 300, and the insertion section 200 can continuously form high-quality contact with the second frustum-shaped hole 320 of the sheath section 300, so that the friction welding can be smoothly implemented. And the friction welding structures formed at the two places on the above-mentioned sheath section 300 have larger dimensions in the length direction of the side-expanded base ball head, so the structural strength in the length direction is higher, providing strength characteristics for use.

[0040] Refer to Figures 1 to 4 , in one embodiment, the diameter of the outer end of the installation section 100 is larger than the diameter of the sheath section 300.

[0041] In this embodiment, the machining of the outer edge of the installation section 100 is not limited after the friction welding is completed. For example, after the installation section 100 is formed by stamping, the installation section 100 and the sheath section 300 are then friction-welded. The diameter of the outer end of the installation section 100 is increased, specifically larger than the diameter of the sheath section 300, so as to facilitate the clamping of the installation section 100. The dimension by which the outer end diameter of the installation section 100 exceeds the sheath section 300 is 5 to 10 millimeters. While providing clamping convenience, it does not cause excessive material waste.

[0042] Refer to Figure 5 , in one embodiment, a plurality of first platform openings 130 are arranged on the circumference of the outer end of the installation section 100.

[0043] In this embodiment, in order to improve the clamping performance of the installation section 100, a plurality of first platform openings 130 are provided in the circumferential direction of the outer end of the installation section 100, thereby providing a basis for clamping. The number of the first platform openings 130 is adaptively designed according to the structure of the clamping device.

[0044] Referring to Figure 4 , in one embodiment, a first gap is formed between the free end of the first connection end 120 and the bottom of the first frustum-shaped hole 310.

[0045] In this embodiment, considering that during the process of forming friction welding between the installation section 100 and the sheath section 300, there will be a certain relative dimension in the length direction between the two, then the abutment between the two in the length direction is not conducive to the completion of friction welding. To solve the above problem, a first gap is formed between the free end of the first connection end 120 and the bottom of the first frustum-shaped hole 310, thereby avoiding the above problem. The thickness dimension of the first gap can be relatively small, for example, about 1 millimeter.

[0046] Referring to Figure 4 , in one embodiment, a second gap 400 is formed between the free end of the second connection end 210 and the bottom of the second frustum-shaped hole 320.

[0047] In this embodiment, similarly considering that during the process of forming friction welding between the insertion section 200 and the sheath section 300, there will be a certain relative dimension in the length direction between the two, then the abutment between the two in the length direction is not conducive to the completion of friction welding. A second gap 400 is formed between the free end of the second connection end 210 and the bottom of the second frustum-shaped hole 320, and the thickness dimension of the second gap 400 can be relatively small, for example, about 1 millimeter.

[0048] Referring to Figure 2 , in one embodiment, a protruding ring 230 is provided on the outer wall circumference of the second connection end 210.

[0049] The function of the insertion section 200 is to form an electrical connection with an external conductive seat. In this embodiment, in order to enhance the electrical connection effect between the insertion section 200 and the external conductive seat, the protruding ring 230 is added, and the conductive effect is realized by the protruding ring 230 assisting the connecting ball head 220. The protruding ring 230 is integrally annular, and the thickness dimension is between 3 and 5 millimeters.

[0050] In one embodiment, a plurality of second platform openings are provided in the circumferential direction of the protruding ring 230.

[0051] In this embodiment, the machining of the outer edge of the insertion section 200 is not limited to after friction welding. For example, after the insertion section 200 is completely formed by stamping, the insertion section 200 and the sheath section 300 are then friction welded. Therefore, a plurality of second platform openings are provided in the circumferential direction of the protruding ring 230, thereby providing a basis for clamping. The number of the second platform openings is adaptively designed according to the structure of the clamping device.

[0052] Referring to Figure 4 , in one embodiment, a third gap 500 is formed between the protruding ring 230 and the sheath section 300 in the length direction.

[0053] In this embodiment, similar to the setting of the second gap 400, in order to prevent the protruding ring 230 from interfering with the friction welding process between the insertion section 200 and the sheath section 300. A third gap 500 is formed between the protruding ring 230 and the sheath section 300 in the length direction, and the thickness of the third gap 500 is about 1 mm.

[0054] In one embodiment, the circumferential wall of the first connection end 120 forms an angle of 2 to 5 degrees with the length direction, and the inner wall of the first frustum-shaped hole 310 forms an angle of 2 to 5 degrees with the length direction.

[0055] In this embodiment, a suitable taper range is defined so that the first connection end 120 and the first frustum-shaped hole 310 can form a better friction welding effect.

[0056] In one embodiment, the circumferential wall of the second connection end 210 forms an angle of 2 to 5 degrees with the length direction, and the inner wall of the second frustum-shaped hole 320 forms an angle of 2 to 5 degrees with the length direction.

[0057] In this embodiment, a suitable taper range is defined so that the second connection end 210 and the second frustum-shaped hole 320 can form a better friction welding effect.

[0058] In summary, for the ball head of the side expansion base for power cabinet combination provided by the present utility model, the first frustum-shaped hole 310 and the second frustum-shaped hole 320 are respectively arranged on the two end faces in the length direction of the 300-length sheathing section made of copper. Due to the existence of the first frustum-shaped hole 310 and the second frustum-shaped hole 320, the material cost of the sheathing section 300 can be reduced. Through the frustum-shaped settings on the installation section 100 and the insertion section 200, corresponding to the first frustum-shaped hole 310 and the second frustum-shaped hole 320 on the sheathing section 300. Thus, during the friction welding process, the installation section 100 can continuously form high-quality contact with the first frustum-shaped hole 310 of the sheathing section 300, and the insertion section 200 can continuously form high-quality contact with the second frustum-shaped hole 320 of the sheathing section 300, so that the friction welding can be smoothly implemented. And for the friction welding structures formed at the two places of the above-mentioned sheathing section 300, the size in the length direction of the ball head of the side expansion base is relatively large, so the structural strength in the length direction is relatively high, providing strength characteristics for use.

[0059] The above are only the preferred embodiments of the present utility model, and do not limit the patent scope of the present utility model accordingly. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present utility model, or directly or indirectly applied to other related technical fields, shall be similarly included in the patent protection scope of the present utility model.

Claims

1. A ball head for a side-expanded base in power cabinet combination, characterized in that, Including: An aluminum installation section (100) has an internal threaded hole (110) at the outer end in the length direction, and the inner end is a first connection end (120). The diameter of the first connection end (120) gradually decreases to form a frustum shape, and the circumferential wall of the first connection end (120) forms an angle of 2 to 5 degrees with the length direction; An aluminum insertion section (200) has a second connection end (210) at the inner end in the length direction and a connection ball head (220) at the outer end. The diameter of the second connection end (210) gradually decreases to form a frustum shape, and the circumferential wall of the first connection end (120) forms an angle of 2 to 5 degrees with the length direction; A copper sheath section (300) is provided with a first frustum-shaped hole (310) and a second frustum-shaped hole (320) on the two end faces in the length direction. The inner walls of the first frustum-shaped hole (310) and the second frustum-shaped hole (320) form an angle of 2 to 5 degrees with the length direction, and a plurality of snap rings (330) are arranged at intervals on the outer circumference of the sheath section (300) in the length direction; Wherein, the circumferential direction of the first connection end (120) of the installation section (100) is friction welded to the circumferential direction of the inner wall of the first frustum-shaped hole (310), and the circumferential direction of the second connection end (210) of the insertion section (200) is friction welded to the circumferential direction of the inner wall of the second frustum-shaped hole (320).

2. The ball head of the side expansion base for power cabinet combination according to claim 1, characterized in that, The diameter of the outer end of the installation section (100) is larger than the diameter of the sheath section (300).

3. The ball head of the side expansion base for power cabinet combination according to claim 2, wherein A plurality of first platform openings (130) are provided on the circumference of the outer end of the installation section (100).

4. The side-expanded base ball head for power cabinet combination according to claim 1, characterized in that, 5. The side-expanded base ball head for power cabinet combination according to claim 4, characterized in that, A first gap is formed between the free end of the first connection end (120) and the bottom of the first frustum-shaped hole (310).

6. The ball head of the side-expanded base for power cabinet combination according to claim 1, wherein A second gap (400) is formed between the free end of the second connection end (210) and the bottom of the second frustum-shaped hole (320).

7. The ball head of the side-expanded base for power cabinet combination according to claim 6, characterized in that, A protruding ring (230) is provided on the outer circumference of the second connection end (210) in the circumferential direction.

8. The ball head of the side-expanded base for power cabinet combination according to claim 6, characterized in that, A plurality of second platform openings are provided on the circumference of the protruding ring (230).

9. The ball head of the side-expanded base for power cabinet combination according to any one of claims 1 to 8, characterized in that, A third gap (500) is formed between the protruding ring (230) and the sheath section (300) in the length direction.

10. The ball head of the side expansion base for power cabinet combination according to any one of claims 1 to 8, characterized in that, The circumferential wall of the first connection end (120) forms an angle of 2 to 5 degrees with the length direction, and the inner wall of the first frustum-shaped hole (310) forms an angle of 2 to 5 degrees with the length direction. The circumferential wall of the second connection end (210) forms an angle of 2 to 5 degrees with the length direction, and the inner wall of the second frustum-shaped hole (320) forms an angle of 2 to 5 degrees with the length direction.

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