Combined insulator

Abstract

The invention discloses a combined insulator which comprises a main rod and a tail rod, umbrella skirts are arranged on the main rod and the tail rod, a first connecting assembly is arranged at the lower end of the main rod, a second connecting assembly in butt joint with the first connecting assembly is arranged at the upper end of the tail rod, the first connecting assembly is provided with at least one lock hole, and the second connecting assembly is provided with at least one lock hole. The second connecting assembly is provided with at least one lock rod and a locking assembly used for driving the lock rod to move in the radial direction of the tail rod and stretch into the lock holes in a one-to-one correspondence mode. The first connecting assembly and the second connecting assembly can be effectively connected into a whole, relative movement and rotation between the first connecting assembly and the second connecting assembly are prevented, then the main rod and the tail rod are connected into a whole, the structure is simple, installation is convenient, time and labor are saved, and the safety of high-altitude operation of constructors is indirectly improved.

Description

Technical Field

[0001] The invention relates to the technical field of power equipment, and in particular to a combined insulator. Background Art

[0002] Insulators are important components in power transmission lines, usually made of glass or ceramics. Most existing modular insulators use ordinary screw connection methods, such as a butterfly-shaped modular insulator disclosed in a Chinese patent document with application number CN214755424U, which includes a pole body, a fixed frame 1 is fixedly connected to the upper end of the pole body, fixed rods are arranged on both sides of the pole body, a fixed frame 2 is arranged at the lower end of the fixed rod and is fixedly connected to the pole body, and a threaded head that passes through the fixed frame 1 and the fixed frame 2 is fixedly connected at both ends of the fixed rod, and a nut 1 that is threadedly connected to the threaded head is arranged on the surface of the threaded head. This type of modular insulator still has shortcomings: the installation method is relatively cumbersome, some insulators have a high installation height, and it is inconvenient to install them at high altitudes. It is also inconvenient to disassemble them when they are damaged and need to be replaced, which affects work efficiency and is time-consuming and labor-intensive. Summary of the invention

[0003] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a combined insulator with a simple structure, convenient installation, and time and labor saving.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0005] A combined insulator comprises a main rod and a tail rod, wherein the main rod and the tail rod are provided with umbrella skirts, the lower end of the main rod is provided with a first connecting assembly, the upper end of the tail rod is provided with a second connecting assembly docking with the first connecting assembly, the first connecting assembly is provided with at least one locking hole, and the second connecting assembly is provided with at least one locking rod and a locking assembly for driving the locking rod to move radially along the tail rod and extend into the locking hole in a one-to-one correspondence.

[0006] As a further improvement of the above technical solution: the first connecting component includes a first connecting sleeve connected to the main rod, the locking hole is arranged on the side wall of the first connecting sleeve, the second connecting component includes a second connecting sleeve arranged in the first connecting sleeve, the locking rod is arranged on the side wall of the second connecting sleeve, and the side wall of the second connecting sleeve is provided with a locking rod hole for the locking rod to extend out.

[0007] As a further improvement of the above technical solution: the locking assembly includes a locking block which is arranged inside the second connecting sleeve and can move up and down, and the locking block abuts against the locking rod.

[0008] As a further improvement of the above technical solution: the locking block is a truncated cone structure.

[0009] As a further improvement of the above technical solution: the locking assembly also includes a rotating seat connected to the tail rod and a locking screw arranged on the rotating seat, a rolling bearing is provided between the locking screw and the inner wall of the second connecting sleeve, and a screw hole is provided inside the locking block for the locking screw to pass through.

[0010] As a further improvement of the above technical solution: a positioning protrusion cooperating with the locking block is provided at the upper end of the second connecting sleeve.

[0011] As a further improvement of the above technical solution: a locking rod sleeve is provided on the inner wall of the first connecting sleeve, and the locking rod is inserted into the locking rod sleeve.

[0012] As a further improvement of the above technical solution: the locking rod is provided with a limiting piece and the outer peripheral sleeve is provided with an elastic reset piece, one end of the elastic reset piece abuts against the limiting piece, and the other end of the elastic reset piece abuts against the locking rod sleeve.

[0013] As a further improvement of the above technical solution: a positioning groove is provided on the inner wall of the first connecting sleeve, and a positioning protrusion matching with the positioning groove is provided on the outer wall of the second connecting sleeve;

[0014] And / or, a buffer pad is provided between the upper end of the first connecting sleeve and the upper end of the second connecting sleeve.

[0015] As a further improvement of the above technical solution: the lower end of the tail rod is arranged in a fixing sleeve, the fixing sleeve is arranged on a bottom plate, and a plurality of reinforcing plates with hollow structures are arranged circumferentially between the fixing sleeve and the bottom plate.

[0016] Compared with the prior art, the advantages of the present invention are:

[0017] The combined insulator disclosed in the present invention no longer uses a structure in which a threaded head and a nut are matched and locked between the first connecting component and the second connecting component, but uses a structure in which a plurality of locking holes and a plurality of locking rods arranged radially are matched and locked in a one-to-one manner. The first connecting component and the second connecting component can be effectively connected as a whole to prevent relative movement and rotation between the first connecting component and the second connecting component, and then the main rod and the tail rod are connected as a whole. The structure is simple, the installation is convenient, time and labor are saved, and the safety of construction personnel working at height is indirectly improved.

[0018] Other features and advantages of the present invention will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the combined insulator of the present invention.

[0020] Figure 2 It is a schematic diagram of the three-dimensional structure of the first connecting component in the present invention.

[0021] Figure 3 It is a schematic diagram of the enlarged three-dimensional structure of the second connecting component in the present invention.

[0022] Figure 4 It is a schematic diagram of the enlarged three-dimensional structure of the locking assembly in the present invention.

[0023] The symbols in the figure represent:

[0024] 1. Main rod; 2. Umbrella skirt; 3. First connecting assembly; 31. First connecting sleeve; 32. Locking hole; 33. Positioning groove; 34. Buffer pad; 4. Second connecting assembly; 41. Second connecting sleeve; 42. Rolling bearing; 43. Lock rod hole; 44. Lock rod sleeve; 45. Lock rod; 46. Elastic reset member; 47. Positioning convex part; 5. Locking assembly; 51. Rotating seat; 52. Locking screw; 53. Locking block; 6. Bottom plate; 7. Reinforcement plate; 8. Fixed sleeve; 9. Tail rod. DETAILED DESCRIPTION

[0025] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0026] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0027] In the present invention, unless otherwise clearly specified and limited, the terms "assemble", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0029] Figures 1 to 4 An embodiment of the combined insulator of the present invention is shown. The combined insulator of this embodiment comprises a main rod 1 and a tail rod 9. The main rod 1 and the tail rod 9 are provided with an umbrella skirt 2. The lower end of the main rod 1 is provided with a first connecting component 3. The upper end of the tail rod 9 is provided with a second connecting component 4 that is connected to the first connecting component 3. The first connecting component 3 is symmetrically provided with two locking holes 32. The second connecting component 4 is symmetrically provided with locking rods 45 and a locking component 5 for driving the two locking rods 45 to move radially along the tail rod 9 and extend into the two locking holes 32 in a one-to-one correspondence. Of course, in other embodiments, the number of locking holes 32 and locking rods 45 can also be further adjusted, for example, three and evenly distributed along the circumferential direction.

[0030] In the combined insulator of the present embodiment, the first connecting component 3 and the second connecting component 4 no longer use a structure in which a threaded head and a nut cooperate and lock, but use a structure in which a plurality of locking holes 32 and a plurality of locking rods 45 arranged radially correspond to each other and cooperate and lock, which can effectively connect the first connecting component 3 and the second connecting component 4 as a whole, prevent relative movement and rotation between the first connecting component 3 and the second connecting component 4, and then connect the main rod 1 and the tail rod 9 as a whole, which has a simple structure, is easy to install, saves time and effort, and indirectly improves the safety of construction personnel working at heights.

[0031] Further, in the present embodiment, the first connecting assembly 3 comprises a first connecting sleeve 31 connected to the main rod 1, a locking hole 32 is arranged on the side wall of the first connecting sleeve 31, and the second connecting assembly 4 comprises a second connecting sleeve 41 sleeved in the first connecting sleeve 31, a locking rod 45 is arranged on the side wall of the second connecting sleeve 41, and a locking rod hole 43 for the locking rod 45 to extend is arranged on the side wall of the second connecting sleeve 41. The second connecting sleeve 41 and the first connecting sleeve 31 are sleeved with each other, and the structure of the two locking holes 32 and the two locking rods 45 arranged radially in a one-to-one corresponding and locked manner can effectively connect the first connecting assembly 3 and the second connecting assembly 4 as a whole, and then connect the main rod 1 and the tail rod 9 as a whole, and the structure is stable and reliable.

[0032] See Figure 4 Furthermore, in this embodiment, the locking assembly 5 includes a locking block 53 disposed inside the second connecting sleeve 41 and movable up and down, and the locking block 53 abuts against the locking rod 45. When the locking block 53 moves upward, the locking rod 45 can be pushed out of the locking rod hole 43 and enter the locking hole 32, thus completing the locking.

[0033] As a preferred embodiment, the locking block 53 is a truncated cone structure. During the upward movement of the locking block 53, the diameter of the surface in contact with the locking rod 45 becomes larger and larger, thereby gradually squeezing the locking rod 45 outward, resulting in a reasonable structure and a smooth locking process.

[0034] Furthermore, in this embodiment, the locking assembly 5 also includes a rotating seat 51 connected to the tail rod 9 and a locking screw 52 arranged on the rotating seat 51, a rolling bearing 42 is arranged between the locking screw 52 and the inner wall of the second connecting sleeve 41, and a screw hole for the locking screw 52 to pass through is arranged inside the locking block 53. The locking screw 52 is connected to the second connecting sleeve 41 as a whole through the rolling bearing 42, and the second connecting sleeve 41 will not hinder the rotation of the locking screw 52. When locking is required, the rotating seat 51 and the locking screw 52 rotate, which can drive the locking block 53 to move upward, with a simple structure and labor-saving operation.

[0035] See Figure 3 Furthermore, in this embodiment, a positioning protrusion 47 cooperating with the locking block 53 is provided at the upper end of the second connecting sleeve 41. When the locking block 53 rises to contact the positioning protrusion 47, it indicates that the locking rod 45 has been fully extended, the main rod 1 and the tail rod 9 have been locked, and the locking screw 52 stops rotating, further improving reliability.

[0036] In this embodiment, a locking rod sleeve 44 is provided on the inner wall of the first connecting sleeve 31, and the locking rod 45 is inserted into the locking rod sleeve 44. The locking rod sleeve 44 can provide support and guidance for the locking rod 45, and prevent the locking rod 45 from falling before the upper and lower parts are assembled, and facilitate the locking rod 45 to accurately extend into the locking hole 32 when locking.

[0037] In this embodiment, the locking rod 45 is provided with a limiter and an elastic reset member 46 (such as a coil spring, an elastic rubber sleeve, etc.) is sleeved on the outer periphery. One end of the elastic reset member 46 abuts against the limiter, and the other end of the elastic reset member 46 abuts against the locking rod sleeve 44. On the one hand, the elastic reset member 46 can prevent the locking rod 45 from protruding from the locking rod hole 43 before the second connecting sleeve 41 is sleeved with the first connecting sleeve 31. On the other hand, when the upper and lower parts need to be disassembled, the locking screw 52 is first rotated in the opposite direction to make the locking block 53 descend. After the locking block 53 is separated from the locking rod 45, the elastic reset member 46 returns to the initial state, pushes the locking rod 45 to disengage from the locking hole 32, and returns to the second connecting sleeve 41, that is, automatically completes the unlocking, and the structure is reasonable and effective.

[0038] See Figure 2 In this embodiment, a positioning groove 33 is provided on the inner wall of the first connecting sleeve 31, and a positioning protrusion (not shown in the figure) is provided on the outer wall of the second connecting sleeve 41 to cooperate with the positioning groove 33. The positioning groove 33 cooperates with the positioning protrusion to facilitate accurate docking of the first connecting sleeve 31 and the second connecting sleeve 41, and also prevent the first connecting sleeve 31 and the second connecting sleeve 41 from rotating relative to each other.

[0039] A buffer pad 34 is provided between the upper end of the first connecting sleeve 31 and the upper end of the second connecting sleeve 41 (specifically, it can be provided at the upper end of the first connecting sleeve 31 or the upper end of the second connecting sleeve 41). The buffer pad 34 can play a buffering role to prevent the first connecting sleeve 31 and the second connecting sleeve 41 from rigidly contacting and causing damage due to collision.

[0040] See Figure 1 In this embodiment, the lower end of the tail rod 9 is arranged in the fixing sleeve 8, the fixing sleeve 8 is arranged on the bottom plate 6, and a plurality of hollow reinforcement plates 7 are arranged circumferentially between the fixing sleeve 8 and the bottom plate 6. The stability of the combined insulator during use can be increased by enlarging the bottom plate 6, and the hollow reinforcement plates 7 play the role of reinforcing ribs. The hollow design can not only further enhance the stability, but also prevent the impact caused by strong wind weather, and the structure is simple and reliable.

[0041] The combined insulator installation method of the present invention is as follows:

[0042] The positioning protrusion on the second connecting sleeve 41 is aligned with the positioning groove 33 on the inner wall of the first connecting sleeve 31 and inserted into the interior of the first connecting sleeve 31 until the top of the second connecting sleeve 41 presses against the buffer pad 34. At this time, the locking hole 32 is aligned with the locking rod hole 43, and then the rotating seat 51 is rotated. The locking screw 52 rotates relative to the second connecting sleeve 41 under the action of the rolling bearing 42, so that the locking block 53 slides upward. The tapered surface of the locking block 53 will press against the locking rod 45 from the smaller diameter surface to the larger diameter surface. During the rising process of the locking block 53, the diameter of the surface in contact with the locking rod 45 becomes larger and larger, squeezing the locking rod 45 outward, and the locking rod 45 slides outward inside the locking rod sleeve 44 and the elastic reset member 46 is compressed, and then passes through the locking rod hole 43 and the locking hole 32. At this time, the top of the locking block 53 presses against the positioning protrusion 47, realizing the limited fixation of the upper and lower parts of the combined insulator. During the installation process, it can also reduce the difficulty of operation and the amount of construction due to its simple operability, thereby indirectly improving the safety of construction personnel.

[0043] Although the present invention has been disclosed as above with preferred embodiments, it is not intended to limit the present invention. Any technician familiar with the art can make many possible changes and modifications to the technical solution of the present invention by using the technical content disclosed above without departing from the scope of the technical solution of the present invention, or modify it into an equivalent embodiment of equivalent changes. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention should fall within the scope of protection of the technical solution of the present invention.

Claims

1. A combined insulator, comprising a main rod (1) and a tail rod (9), wherein the main rod (1) and the tail rod (9) are provided with sheds (2), characterized in that: A first connecting component (3) is provided at the lower end of the main rod (1), and a second connecting component (4) is provided at the upper end of the tail rod (9) for docking with the first connecting component (3). The first connecting component (3) is provided with at least one locking hole (32), and the second connecting component (4) is provided with at least one locking rod (45) and a locking component (5) for driving the locking rod (45) to move radially along the tail rod (9) and extend into the locking hole (32) in a one-to-one correspondence.

2. The combined insulator according to claim 1, characterized in that: The first connecting assembly (3) comprises a first connecting sleeve (31) connected to the main rod (1), the locking hole (32) being arranged on the side wall of the first connecting sleeve (31), the second connecting assembly (4) comprising a second connecting sleeve (41) sleeved in the first connecting sleeve (31), the locking rod (45) being arranged on the side wall of the second connecting sleeve (41), and a locking rod hole (43) for the locking rod (45) to extend out is arranged on the side wall of the second connecting sleeve (41).

3. The combined insulator according to claim 2, characterized in that: The locking assembly (5) comprises a locking block (53) which is arranged inside the second connecting sleeve (41) and can move up and down, and the locking block (53) abuts against the locking rod (45).

4. The combined insulator according to claim 3, characterized in that: The locking block (53) is a truncated cone structure.

5. The combined insulator according to claim 3, characterized in that: The locking assembly (5) further comprises a rotating seat (51) connected to the tail rod (9) and a locking screw (52) arranged on the rotating seat (51); a rolling bearing (42) is arranged between the locking screw (52) and the inner wall of the second connecting sleeve (41); and a screw hole for the locking screw (52) to pass through is arranged inside the locking block (53).

6. The combined insulator according to claim 3, characterized in that: The upper end of the second connecting sleeve (41) is provided with a positioning protrusion (47) that cooperates with the locking block (53).

7. The combined insulator according to claim 2, characterized in that: A locking rod sleeve (44) is provided on the inner wall of the first connecting sleeve (31), and the locking rod (45) is inserted into the locking rod sleeve (44).

8. The combined insulator according to claim 7, characterized in that: The locking rod (45) is provided with a limiting piece and an elastic reset piece (46) is sleeved on the outer periphery; one end of the elastic reset piece (46) abuts against the limiting piece, and the other end of the elastic reset piece (46) abuts against the locking rod sleeve (44).

9. The combined insulator according to any one of claims 2 to 8, characterized in that: The first connecting sleeve (31) has an inner wall provided with a positioning groove (33), and the second connecting sleeve (41) has an outer wall provided with a positioning protrusion matched with the positioning groove (33); And / or, a buffer pad (34) is provided between the upper end of the first connecting sleeve (31) and the upper end of the second connecting sleeve (41).

10. The combined insulator according to any one of claims 1 to 8, characterized in that: The lower end of the tail rod (9) is arranged in a fixing sleeve (8), the fixing sleeve (8) is arranged on a bottom plate (6), and a plurality of reinforcing plates (7) with hollow structures are arranged between the fixing sleeve (8) and the bottom plate (6) along the circumferential direction.

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