PT type adjusting plate

Abstract

The utility model relates to the technical field of electric power fittings, in particular to a PT type adjusting plate. Comprising a middle plate, two face plates, two bolts and at least two nuts, the two bolts and the nuts are used for fixing the middle plate, the two face plates and the two bolts together, a plurality of through first long holes are formed in the middle plate at equal intervals, and the two ends of each first long hole are a first semicircular part and a second semicircular part which are equal in radius respectively. The distance between every two adjacent first long holes is equal to the difference value obtained by subtracting two times of the diameter of the first semicircular part from the length of each first long hole, and a plurality of through second long holes with the same cross section size as the first long holes are formed in the panel at equal intervals. The two ends of each second long hole are a third semicircular part and a fourth semicircular part which are equal in radius respectively, and the distance between every two adjacent second long holes is equal to the difference value obtained by subtracting two times of the diameter of the first semicircular part from the length of the first long hole. The utility model has high reliability.

Description

Technical Field

[0001] The utility model relates to the technical field of electric power fittings, in particular to a PT type adjustment plate. Background Art

[0002] The PT type adjustment plate is a commonly used electrical hardware. The patent with application number 202310557725.X discloses an online length adjustment method for the PT type adjustment plate that can prevent the insulator string from falling, which solves the problem of how to effectively prevent the insulator string from falling when adjusting the length of the PT type adjustment plate hardware at high altitude. In the PT type adjustment plate, a clamping cooperation form of an inner connecting plate and two outer connecting plates is set, a long through hole is set on an inner connecting plate, and adjustment screw holes are set at equal intervals on the two outer connecting plates. Through the clamping cooperation of the two outer connecting plates on the inner connecting plate, the bolts passing through the innermost screw holes on the two outer connecting plates are It is always in the long strip hole, and the outer end of the inner connecting plate is fixedly connected to the tower, and the outer ends of the two outer connecting plates are fixedly connected to the insulator string. During the process of adjusting the length of the PT type adjustment plate fitting, if the insulator string slips, the two outer connecting plates can only move along the long strip hole to the end of the long strip hole, so that the PT type adjustment plate fitting has the function of backup protection. However, this structure only relies on the friction between the outer connecting plate and the inner connecting plate to keep the position of the two fixed. When the adjustment is completed, the two are prone to relative movement under the action of external force, which makes the overall length longer, and the reliability is low. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a PT type adjustment plate in view of the above-mentioned technical deficiencies.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: a PT type adjustment plate, including an intermediate plate and two panel plates, and two bolts and at least two nuts for fixing the three together, the intermediate plate is provided with a plurality of first long holes at equal intervals, the two ends of the first long hole are respectively a first semicircular portion and a second semicircular portion with equal radius, and the distance between two adjacent first long holes is equal to the difference obtained by subtracting twice the diameter of the first semicircular portion from the length of the first long hole, the panel is provided with a plurality of second long holes at equal intervals and having the same cross-sectional size as the first long hole, the two ends of the second long hole are respectively a third semicircular portion and a fourth semicircular portion with equal radius, and the distance between two adjacent second long holes is equal to the difference obtained by subtracting twice the diameter of the first semicircular portion from the length of the first long hole.

[0005] Preferably, ribs are provided on both sides of the panel.

[0006] Preferably, the bolt is provided with a through hole for inserting a cotter pin.

[0007] Compared with the prior art, the utility model has the following advantages: when adjusting the length of the PT-type adjustment plate, there can always be a bolt located in a first long hole and a second long hole at the same time, so that the panel and the middle plate will not be completely separated, thereby effectively preventing the problem of the insulator string falling. When the length adjustment is completed, the length of the PT-type adjustment plate will not increase due to the obstruction of the bolt, and the reliability is relatively high. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a structural schematic diagram of a PT type adjustment plate.

[0009] Figure 2 This is a schematic diagram of the structure of the middle plate.

[0010] Figure 3 A schematic diagram of the panel structure.

[0011] In the figure: 1, middle plate; 11, first long hole; 111, first semicircular portion; 112, second semicircular portion; 2, panel; 21, second long hole; 211, third semicircular portion; 212, fourth semicircular portion; 22, retaining edge; 3, bolt. DETAILED DESCRIPTION

[0012] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail below in combination with specific implementation methods and with reference to the accompanying drawings. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the utility model. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concept of the utility model.

[0013] Specific implementation method: Combination Figure 1-3 As shown, a PT type adjustment plate comprises an intermediate plate 1 and two panels 2, and two bolts 3 and at least two nuts for fixing the three together, the number of nuts is preferably two, a plurality of first long holes 11 penetrating therethrough are arranged at equal intervals on the intermediate plate 1, the plurality of first long holes 11 are preferably symmetrical about a symmetry plane perpendicular to the length direction of the intermediate plate 1, the two ends of the first long hole 11 are respectively a first semicircular portion 111 and a second semicircular portion 112 with equal radius, the distance between two adjacent first long holes 11 is equal to the difference obtained by subtracting twice the diameter of the first semicircular portion 111 from the length of the first long hole 11, so that Figure 2The distance between the axis of the second semicircular portion 112 is equal to the distance between the axes of the first semicircular portions 111 on the left and right sides thereof, that is, the distance between the axes of the adjacent semicircular portions is equal. The panel 2 is provided with a plurality of second long holes 21 which are equally spaced and have the same cross-sectional dimensions as the first long hole 11. The two ends of the second long hole 21 are respectively the third semicircular portion 211 and the fourth semicircular portion 212 with equal radius. The distance between two adjacent second long holes 21 is equal to the difference obtained by subtracting the length of the first long hole 11 from twice the diameter of the first semicircular portion 111. When adjusting the length of the PT type adjustment plate, it is assumed that it is at the beginning. Figure 1 In the state shown in , if you want to extend the length of the PT type adjustment plate, you can remove the nut on the bolt 3 at the left end (hereinafter referred to as the first bolt) and pull it out, loosen the nut on the bolt 3 at the right end (hereinafter referred to as the second bolt) a little, and then insert the pulled-out first bolt into the first fourth semicircular portion 212 on the left. At this time, the first bolt is still located in the third first semicircular portion 111 on the left. Then, tighten the nut on the first bolt (not too tight), then remove the nut on the second bolt and pull it out, and then pull the middle plate 1 to the left so that the first bolt is located in the first third semicircular portion 211 on the left. At this time, the first bolt is still located in the third second semicircular portion 112 on the left, and then insert the second bolt into the third third semicircular portion 211 on the left. At this time, the second bolt is still located in the first second semicircular portion 112 on the right, and then the nuts on the two bolts 3 are tightened to complete the adjustment; if you want to extend the length of the PT-type adjustment plate, you can pull out the first bolt and loosen the nut on the second bolt, and then push the middle plate 1 to the right so that the second bolt is located in the second fourth semicircular portion 212 on the right (and located in the first first semicircular portion 111 on the right), and then insert the first bolt into the first third semicircular portion 211 on the left (and located in the first second semicircular portion 112 on the left) and screw on the nut, and then unscrew the nut of the second bolt and pull it out and insert it into the first third semicircular portion 211 on the right (and located in the first second semicircular portion 112 on the right), and then tighten the nuts on the two bolts 3 to complete the adjustment. When adjusting the length of the PT-type adjustment plate, the problem of the insulator string falling can be effectively prevented, and after the adjustment is completed, since the two sides of the bolt 3 are in contact with the third semicircular portion 211 and the second semicircular portion 112 respectively, the length of the PT-type adjustment plate will not increase, and the reliability is high.

[0014] Preferably, both sides of the panel 2 are provided with retaining edges 22, and the distance between the two retaining edges 22 is equal to or slightly larger than the width of the middle plate 1. During the adjustment process, when the force on the left end of the middle plate 1 or the right end of the panel 2 is reduced or disappears, the panel 2 will not rotate relative to the middle plate 1, and the first long hole 11 and the second long hole 21 are always substantially in the same straight line, so that the bolt 3 previously pulled out can be easily inserted.

[0015] Preferably, the bolt 3 is provided with a through hole for inserting a cotter pin, and the cotter pin can prevent the nut from falling after being inserted into the through hole and bent.

[0016] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent transformations made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in the relevant technical field, are also included in the patent protection scope of the present invention.

Claims

1. A PT type adjustment plate, comprising an intermediate plate (1) and two face plates (2), and two bolts (3) and at least two nuts for fixing the three together, characterized in that: The middle plate (1) is provided with a plurality of first long holes (11) at equal intervals, the two ends of the first long hole (11) are respectively a first semicircular portion (111) and a second semicircular portion (112) of equal radius, and the distance between two adjacent first long holes (11) is equal to the difference between the length of the first long hole (11) and twice the diameter of the first semicircular portion (111). The panel (2) is provided with a plurality of second long holes (21) at equal intervals and having the same cross-sectional size as the first long hole (11), the two ends of the second long hole (21) are respectively a third semicircular portion (211) and a fourth semicircular portion (212) of equal radius, and the distance between two adjacent second long holes (21) is equal to the difference between the length of the first long hole (11) and twice the diameter of the first semicircular portion (111).

2. A PT type adjustment plate according to claim 1, characterized in that: Guard edges (22) are provided on both sides of the panel (2).

3. A PT type adjustment plate according to any one of claims 1-2, characterized in that: The bolt (3) is provided with a through hole for inserting a cotter pin.

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