Adjustable extension ring

Abstract

The utility model discloses an adjustable extension ring which comprises a first ring body and a second ring body, blind holes are formed in the two ends of the first ring body, fixing devices are arranged on the outer walls of the blind holes in a sleeved mode, fixing rods are arranged at the two ends of the second ring body and inserted into the blind holes, each fixing device comprises a fixing sleeve, and the fixing sleeves are sleeved with the fixing sleeves. The fixing sleeve is provided with at least one fixing block, penetrates through the blind hole and the fixing rod and is used for connecting and fixing the first ring body and the second ring body. In the unlocking state, the distance between the second ring body and the first ring body can be changed only by moving the second ring body, different connection requirements are met, the second ring body is fixed to the adjusted position through the fixing block, and in addition, through cooperation of the fastening screw and the fixing sleeve and safety protection of the protruding part, the locking effect is good. The connection stability is ensured, the fixing block is prevented from being lost during high-altitude adjustment, and the product has the advantages of being easy and convenient to operate and improving the working efficiency.

Description

TECHNICAL FIELD

[0001] The utility model relates to power fittings technical field especially relates to adjustable extension ring. BACKGROUND

[0002] In the power construction, the extension ring is a common power connection fitting, which is used for the connection of the ring-shaped fitting to lengthen the connection size or change the connection direction, especially in the power transmission line construction, the extension ring is widely applied in lengthening the insulator string fitting, increasing the space gap and the like, and is one of the important elements related to the operation of the overhead power transmission line.

[0003] The extension ring is a key component for connecting external power elements, and there are various types and different lengths. In actual operation, in order to ensure the smooth connection, it is often necessary to carry multiple types of extension rings to the vicinity of the power element. However, this approach not only increases the complexity of the operation, making the on-site management more complicated, but also significantly reduces the work efficiency, affecting the timeliness and convenience of the power connection. Therefore, the applicant has made a beneficial design and found a method to solve the above problems. The technical solution to be introduced below is generated in this background. SUMMARY

[0004] The utility model discloses a product that is simple and easy to operate and improves work efficiency to overcome the deficiencies in the design of the traditional extension ring.

[0005] To solve the above problems, the utility model adopts the following technical scheme.

[0006] An adjustable extension ring, comprising a first ring body and a second ring body, the first ring body is provided with a blind hole at both ends, the outer wall of the blind hole is provided with a fixing device, the second ring body is provided with a fixing rod at both ends and is inserted into the blind hole, the fixing device comprises a fixing sleeve, the fixing sleeve is provided with at least one fixing block and passes through the blind hole and the fixing rod to connect and fix the first ring body and the second ring body.

[0007] Preferably, the blind hole is provided with at least one first through hole with the same axis on both sides, and the blind hole is provided with a limiting groove on both sides.

[0008] Preferably, the fixing rod is provided with a plurality of second through holes corresponding to the first through holes.

[0009] Preferably, the first ring body is provided with a fixing flange, and the fixing flange is provided with a first mounting hole.

[0010] Preferably, the fixing sleeve is provided with a groove corresponding to the limiting groove, and the fixing sleeve is provided with a fastening screw and is threadedly connected to the first mounting hole.

[0011] Preferably, two sides of the fixed sleeve are provided with third through holes corresponding to the first through holes, one of the third through holes is provided with a convex part on two sides, one side of the fixed sleeve is provided with a pressure bearing surface and is located on one side of the third through hole with the convex part, and the pressure bearing surface is provided with a second mounting hole.

[0012] Preferably, the number of the fixed blocks is at least one, one end of the fixed block is provided with a mounting part, the mounting part is provided with a fastening screw and is threadedly connected to the second mounting hole, and the mounting part is provided with an operation handle.

[0013] Preferably, two sides of the fixed block are provided with sliding grooves corresponding to the convex parts, and the other end of the fixed block is provided with a plug for covering the sliding grooves.

[0014] Beneficial effects:

[0015] Compared with the prior art, the beneficial effects of the adjustable extension ring are:

[0016] In the unlocked state, the second ring body is only needed to be moved to easily change the distance from the first ring body, different connection requirements are met, the design avoids carrying multiple types of extension rings, effectively reduces the carrying burden, and significantly shortens the matching time; after being adjusted to a suitable size, the fixed part is pushed to pass through the blind hole and the fixed rod, and the two ring bodies can be firmly locked; in addition, the cooperation of the fastening screw and the fixed sleeve and the safety protection of the convex part ensure the stability of the connection and avoid the loss of the fixed block when adjusting in the air, and the above design makes the product have the advantages of simple operation and improved work efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a sectional structure schematic view of the adjustable extension ring of the utility model;

[0018] Figure 2 is a sectional structure schematic view of the adjustable extension ring of the utility model Figure 1 ;

[0019] Figure 3 is a sectional structure schematic view of the adjustable extension ring of the utility model;

[0020] Figure 4 is an exploded structure schematic view of the adjustable extension ring of the utility model;

[0021] The correspondence between the annotations of the drawings and the component names in the drawings is as follows:

[0022] Reference signs: 1, first ring body; 2, second ring body; 3, fixing device; 4, fastening screw; 11, blind hole; 12, first through hole; 13, fixing flange; 14, first mounting hole; 15, limiting groove; 21, fixing rod; 23, second through hole; 41, fixing sleeve; 42, fixing block; 43, operation handle; 44, plug; 411, third through hole; 412, convex part; 413, pressure bearing surface; 414, second mounting hole; 415, recess; 421, mounting part; 422, sliding groove. DETAILED DESCRIPTION

[0023] The technical solutions of the present application will be described clearly and completely below in conjunction with the embodiments. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0024] In the description of the present application, it should be understood that the terms "upper", "lower", "left", "right", and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0025] In the embodiments of the present application, "and / or" is only a description of the association relationship between the associated objects, indicating that there can be three relationships, for example, A and / or B, which can represent the three cases of A alone, A and B together, and B alone. In addition, the character " / " in this paper generally represents that the associated objects before and after are a "or" relationship.

[0026] Reference Example Figures 1 to 4The utility model provides an adjustable extension ring, including first ring body 1, second ring body 2, the both ends of first ring body 1 are equipped with blind hole 11, the outer wall of blind hole 11 is equipped with fixing device 3, the both ends of second ring body 2 are equipped with fixed rod 21, and are inserted in blind hole 11, fixing device 3 includes fixed sleeve 41, fixed sleeve 41 is equipped with at least one fixed block 42, and passes through blind hole 11, fixed rod 21, for making first ring body 1 with second ring body 2 connection fixed, when fixed block 42 is not inserted to first through -hole 12, second through -hole 22 and another third through -hole 411, at this time, first ring body 1 with second ring body 2 are in the unlocked state, just need to move second ring body 2, can easily change the interval with first ring body 1, satisfy different connection demand, this design avoids carrying multiple models extension ring, effectively alleviates the carrying burden, and significantly shortens the matching time, when adjusting to the appropriate size, push the fixed part and make it pass through first through -hole 12, second through -hole 22, first through -hole 12, third through -hole 411 in proper order, then through fastening screw 4, the installation part 421 is pressed in pressure -bearing surface 413, first ring body 1 with second ring body 2 can be firmly locked,

[0027] Worth mentioning is that the both sides of blind hole 11 are equipped with at least one first through -hole 12 of same axial line, the both sides of blind hole 11 are equipped with limiting slot 15, and first through -hole 12 is passed through for fixed block 42;

[0028] Worth mentioning is that fixed rod 21 is equipped with a plurality of second through -holes 22 corresponding to first through -hole 12, for accurately adapting the tolerance value in actual manufacture, the diameter of first through -hole 12 and second through -hole 22 is slightly larger than fixed block 42, and this design ensures that fixed block 42 has moderate redundant space when passing through through -hole, which guarantees smooth passing experience and effectively deals with slight deviation in the manufacturing process;

[0029] Worth mentioning is that first ring body 1 is equipped with fixed flange 13, fixed flange 13 is equipped with first mounting hole 14, and fixed flange 13 is in contact with fixed sleeve 41, which plays the role of limiting fixed sleeve 41 during assembly;

[0030] Worth mentioning is that fixed sleeve 41 is equipped with recess 415 corresponding to limiting slot 15, fixed sleeve 41 is equipped with fastening screw 4 and is connected in first mounting hole 14 by screwing, when assembling, limiting slot 15 and recess 415 are in contact with each other, so that third through -hole 411 is in the same axial line with first through -hole 12 and second through -hole 22, at this time, fastening screw 4 is in the same axial line with first mounting hole 14, which plays the technical effect of facilitating assembly;

[0031] It is worth mentioning that the two sides of the fixed sleeve 41 are provided with third through holes 411 corresponding to the first through hole 12, one of the two sides of the third through hole 411 is provided with a protrusion 412, one side of the fixed sleeve 41 is provided with a pressure bearing surface 413, and is located on one side of the third through hole 411 with the protrusion 412, the pressure bearing surface 413 is provided with a second mounting hole 414, the protrusion 412 effectively prevents the fixed block 42 from falling off from the third through hole 411, provides safety protection for high-altitude work, avoids that the fixed block 42 has no place to place or is lost, at the same time, increases the contact area of the pressure bearing surface 413 and the mounting portion 421, improves the connection stability, and facilitates the processing of the second mounting hole 414;

[0032] It is worth mentioning that the number of the fixed block 42 is at least one, one end of the fixed block 42 is provided with a mounting portion 421, the mounting portion 421 is provided with a fastening screw 4 and is threadedly connected to the second mounting hole 414, the mounting portion 421 is provided with an operation handle 43, the fastening screw 4 presses the mounting portion 421 on the pressure bearing surface 413, and the connection stability of the first ring body 1 and the second ring body 2 is ensured, the operation handle 43 facilitates the staff to easily and conveniently operate the fixed block 42, with the increase of the number of the fixed block 42, the connection of the first ring body 1 and the second ring body 2 is more stable, when there are two fixed blocks 42, adjacent mounting portions 421 are connected with each other, so that the fixed block 42 moves synchronously, and the complexity during operation is reduced.

[0033] It is worth mentioning that the two sides of the fixed block 42 are provided with a sliding groove 422 corresponding to the protrusion 412, the other end of the fixed block 42 is provided with a plug 44 for covering the sliding groove 422, and the plug 44 cooperates with the mounting portion 421 to limit the range of movement of the fixed block 42.

[0034] The above design scheme can make the product have the advantages of simple operation and improved work efficiency.

[0035] The above content is further detailed in combination with the specific embodiments, and cannot be regarded as the limitation of the specific embodiments of the utility model. For ordinary skilled persons in the technical field to which the utility model belongs, without departing from the concept of the utility model, a number of simple deductions or substitutions can be made, and all of them should be regarded as belonging to the protection range determined by the claims of the utility model.

Claims

1. An adjustable extension ring, comprising a first ring body (1) and a second ring body (2), characterized in that: The first ring body (1) has blind holes (11) at both ends. The outer wall of the blind hole (11) is fitted with a fixing device (3). The second ring body (2) has fixing rods (21) at both ends, which are inserted into the blind hole (11). The fixing device (3) includes a fixing sleeve (41). The fixing sleeve (41) has at least one fixing block (42) which passes through the blind hole (11) and the fixing rod (21) to connect and fix the first ring body (1) and the second ring body (2).

2. The adjustable extension ring according to claim 1, characterized in that: The blind hole (11) has at least one first through hole (12) on both sides of the same axis, and the blind hole (11) has a limiting groove (15) on both sides.

3. The adjustable extension ring according to claim 2, characterized in that: The fixing rod (21) is provided with a number of second through holes (22) corresponding to the first through hole (12).

4. The adjustable extension ring according to claim 2, characterized in that: The first ring body (1) is provided with a fixed flange (13), and the fixed flange (13) is provided with a first mounting hole (14).

5. The adjustable extension ring according to claim 4, characterized in that: The fixing sleeve (41) is provided with a groove (415) corresponding to the limiting groove (15), and the fixing sleeve (41) is provided with a fastening screw (4) and threadedly connected to the first mounting hole (14).

6. The adjustable extension ring according to claim 2, characterized in that: The fixed sleeve (41) has a third through hole (411) corresponding to the first through hole (12) on both sides. One of the third through holes (411) has a protrusion (412) on both sides. The fixed sleeve (41) has a pressure-bearing surface (413) on one side, which is located on the side of the third through hole (411) with the protrusion (412). The pressure-bearing surface (413) has a second mounting hole (414).

7. The adjustable extension ring according to claim 6, characterized in that: The number of the fixing blocks (42) is set to at least one. One end of the fixing block (42) is provided with a mounting part (421). The mounting part (421) is provided with a fastening screw (4) and threadedly connected to the second mounting hole (414). The mounting part (421) is provided with an operating handle (43).

8. The adjustable extension ring according to claim 7, characterized in that: The fixing block (42) has grooves (422) with corresponding protrusions (412) on both sides, and a plug (44) is provided at the other end of the fixing block (42) to cover the grooves (422).

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