CN216027326U

CN216027326U - Supplementary preflex frock of type of falling T rib

Info

Publication number: CN216027326U
Application number: CN202121724549.7U
Authority: CN
Inventors: 徐刚; 杨辉; 夏明莉; 王世浩; 王梦泽
Original assignee: AVIC Xian Aircraft Industry Group Co Ltd
Current assignee: AVIC Xian Aircraft Industry Group Co Ltd
Priority date: 2021-07-27
Filing date: 2021-07-27
Publication date: 2022-03-15
Anticipated expiration: 2031-07-27

Abstract

The application discloses supplementary preflex frock of type of falling T rib, this frock is pressed from both sides tight piece, feed bolt, fastening bolt, adjusting bolt and the aluminium bar of clamp of a briquetting, a pair of stud both sides by a stud top and is constituteed, and the briquetting is located the tight piece centre of clamp of stud both sides, and its both sides of accessible slide from top to bottom with fastening bolt complex slotted groove and come height-adjusting, make terminal surface and stud top contact under the briquetting. The briquetting top is opened there is semi-circular notch, and the aluminium bar inlay card is in semi-circular notch, and wallboard preflex in-process feeds the bolt and passes through the aluminium bar and transmit the packing force to the briquetting, and the wallboard preflex is realized with stud top contact to the briquetting, presss from both sides tight piece and passes through mutually supporting of both sides fastening bolt and adjusting bolt, with the type of falling T rib body fastening connection, and level bottom surface and stud root web closely laminate simultaneously, prevent to fall along the course among the type of falling T rib preflex.

Description

Supplementary preflex frock of type of falling T rib

Technical Field

The application relates to the technical field of aircraft manufacturing, and further relates to shot blasting forming manufacturing of an aircraft panel, in particular to an auxiliary pre-bending tool for an inverted T-shaped rib.

Background

Shot peening is a common plastic processing method for the existing metal ribbed wing wall plate. The shot peening has the advantages of not only forming the appearance of the wall plate, but also improving the fatigue life of the wall plate. The method uses the shot which runs at high speed to hit the surface of the wallboard to cause plastic extension deformation, and finally achieves the purpose of wallboard forming. In actual engineering, shot blasting forming of ribbed wing panels is performed in a prestressed state, however, due to the fact that the top of the inverted T-shaped rib is not provided with a flange, if prestress is directly applied to the top of the stud, the edge of the top of the stud is easily damaged, and even deviation or toppling to the course due to uneven stress of the stud occurs, and the panel is scrapped. At present, no auxiliary pre-bending tool which can complete pre-bending of the stud and simultaneously ensure that the stud cannot be damaged and deformed under prestress is available for pre-stress clamping of the wall plate containing the inverted T-shaped rib in engineering.

Disclosure of Invention

The utility model provides an aim at to the actual problem that prior art exists, designs the supplementary preflex frock of type of falling T rib, solves the difficult problem of type of falling T rib prestressing force clamping.

The utility model provides a supplementary preflex frock of type of falling T rib, including the briquetting at a founding muscle top, the tight piece of clamp of a pair of founding muscle both sides, the aluminium bar, feed bolt, fastening bolt, adjusting bolt, the briquetting is rectangular plate-shaped part, open at its top has semi-circular notch, the side be equipped with a set of parallel with fastening bolt complex long circular slot, the aluminium bar is the semi-cylindrical structure, its semicircular face is unanimous with the semi-circular notch at briquetting top, the aluminium bar inlay card is in semi-circular notch, open on the aluminium bar have with feed bolt complex logical groove, it is the type of falling T draw-in groove to lead to the groove structure. The clamping blocks are of L-shaped structures, two fastening bolt through holes and two adjusting bolt feeding blind holes are formed in corresponding positions on the vertical surfaces of the L-shaped structures of the clamping blocks, and the adjusting bolt blind holes are formed above the fastening bolt through holes. The fastening bolt passes the fastening bolt clearing hole on the tight piece of clamp in proper order and the long circular slot on the briquetting will press from both sides tight piece and stud both sides and press from both sides tightly fixed, and the laminating of the horizontal bottom surface and the stud root web of the tight piece L type structure of clamp, rotatory feed bolt will aluminium bar top the briquetting at tight stud top, compress tightly the briquetting on the stud top surface, adjust the briquetting and press from both sides the clearance between the tight piece through adjusting bolt, make its clearance unanimous from top to bottom. The width of the pressing block is 10-15 mm, and gaps of 2-4 mm are formed between the two side faces of the pressing block and the inner side faces of the clamping blocks.

The beneficial effect of this application lies in: this frock can be adjusted by oneself according to the height of stud, transmits prestressing force to the stud top through the briquetting and carries out the preflex, and the width of briquetting is greater than stud thickness, and the in-process of preflex can increase stud top and force applying device's area of contact, and the tight piece of the clamp in stud both sides is established to L type structure simultaneously, and vertical face and stud side press from both sides tight contact, horizontal bottom surface and the contact of stud root web. The tool can effectively ensure that the prestress is vertical to the web plate surface downwards in the pre-bending process of the stud, greatly reduces the occurrence of shearing force of a non-parallel stud surface, and ensures that the stud does not topple or shift along the course under larger prestress.

The present application is described in further detail below with reference to the attached drawing figures:

drawings

FIG. 1 is a schematic view of an auxiliary pre-bending tool for inverted T-shaped ribs;

fig. 2 is a schematic view of pre-bending clamping of an auxiliary pre-bending tool for inverted-T-shaped ribs.

The numbering in the figures illustrates: 1. briquetting; 2. clamping blocks at two sides of the stud; 3. the upper end of the pressing block is provided with a semicircular notch; 4. Fastening a bolt; 5. adjusting the bolt; 6. the horizontal bottom surfaces of the L-shaped structures of the clamping blocks on the two sides of the stud; 7. a long circular groove; 8. pressing the aluminum bar at the top of the stud; 9. feeding bolts at the tops of the vertical bars; 10. the inverted T-shaped rib vertical rib body; 11. web at the root of the stud.

Detailed Description

As shown in figures 1 and 2, the auxiliary pre-bending tool for the inverted T-shaped rib comprises a pressing block 1, a pair of vertical rib two-side clamping blocks 2, a fastening bolt 4, an adjusting bolt 5, a vertical rib top pressing aluminum rod 8 and a vertical rib top feeding bolt 9, wherein a long circular groove 7 is formed in the body of the vertical rib top pressing block 1 and used for adjusting the height of the vertical rib top pressing block, a semicircular notch 3 in the upper end of the pressing block is used for installing the vertical rib top pressing aluminum rod 8, the vertical rib two-side clamping blocks 2 are L-shaped, four bolt holes are formed in the L-shaped vertical surfaces of the vertical rib two-side clamping blocks 2, the vertical rib two-side clamping blocks 2 are clamped and fixed with the two sides of the inverted T-shaped rib vertical rib body 10 through the fastening bolts 4 at the lower ends of the vertical rib two-side clamping blocks, the bolt holes of the adjusting bolt 5 at the upper ends of the vertical rib two-side clamping blocks are blind holes, and the aim of adjusting the distance between the vertical rib two-side clamping blocks 2 through the feeding of the blind hole threads is achieved, the lower ends of the clamping blocks 2 on the two sides of the stud are prevented from opening after the fastening bolts 4 at the lower ends of the clamping blocks on the two sides of the stud clamp the stud. The L type horizontal plane of 2 bottoms of the tight piece of founding muscle both sides is the tight piece bottom sprag piece 6 of the tight piece of founding muscle both sides clamp, prevent with 11 contacts of founding muscle root web that the founding muscle from empting along the course, 1 width of briquetting is 10 ~ 15mm, 2 medial surfaces of the tight piece of briquetting 1 and the tight piece of founding muscle both sides are equipped with 2 ~ 4mm clearance, 2 medial surfaces of the tight piece of founding muscle both sides are equipped with the thickness jump, the tight piece 2 of the tight piece of founding muscle both sides clamp through the tight piece lower extreme fastening bolt 4 of the tight piece of founding muscle both sides clamp with the type of falling T muscle body 10 both sides back, the tight piece 2 of the tight piece of founding muscle both sides clamp and briquetting 1 contactless. And the vertical rib top feeding bolt 9 transmits the pressing force to the pressing block 1 through the vertical rib top pressing aluminum bar 8 to complete auxiliary pre-bending.

When the auxiliary pre-bending tool is used, firstly, the auxiliary pre-bending tool is placed on two sides of a stud, so that the horizontal bottom surfaces of the L-shaped structures at the bottoms of the clamping blocks 2 on the two sides of the stud are in contact with the web plate 11 at the root part of the stud, and at the moment, the pressing block 1 at the top of the stud automatically completes height adjustment through the long circular groove on the pressing block body; the second step, fastening stud both sides lower extreme fastening bolt presss from both sides tight piece and the stud both sides tightly with the stud both sides, adjusts stud both sides upper end adjusting bolt after that, prevents that the tight piece lower extreme of the tight piece of stud both sides from appearing opening one's mouth, and the third step compresses tightly aluminium bar 8 with the stud top and places in 1 upper end half slot departments of stud top briquetting, feeds through stud top feed bolt 9 and applys the prestressing force to the stud top, accomplishes the supplementary preflex of stud.

Claims

1. A reverse T-shaped rib auxiliary pre-bending tool is characterized by comprising a pressing block at the top of a stud, clamping blocks at two sides of a pair of studs, an aluminum bar, a feeding bolt, a fastening bolt and an adjusting bolt, wherein the pressing block is a rectangular plate-shaped part, the top of the pressing block is provided with a semicircular groove opening, the side surface of the pressing block is provided with a group of parallel long circular grooves matched with the fastening bolt, the aluminum bar is clamped in the semicircular groove opening, the aluminum bar is provided with a through groove matched with the feeding bolt, the clamping block is of an L-shaped structure, two fastening bolt through holes and two adjusting bolt feeding blind holes are formed in the corresponding positions on the vertical surfaces of the L-shaped structures of the clamping blocks, the fastening bolts sequentially penetrate through the fastening bolt through holes in the clamping blocks and the long circular grooves in the pressing block to clamp and fix the clamping blocks and the two sides of the stud, the horizontal bottom surface of the L-shaped structure of the clamping block is attached to a web plate at the root of the stud, the aluminum bar is tightly pressed against the pressing block at the top of the stud by rotating the feeding bolt, the pressing block is pressed on the top surface of the stud, and the gap between the pressing block and the clamping block is adjusted through the adjusting bolt, so that the upper gap and the lower gap are consistent.

2. The auxiliary pre-bending tool for the inverted T-shaped ribs according to claim 1, wherein the aluminum bar is of a semi-cylindrical structure, the semi-circular surface of the aluminum bar is consistent with the semi-circular notch in the top of the pressing block, and the through groove structure is an inverted T-shaped clamping groove.

3. The auxiliary pre-bending tool for the inverted T-shaped ribs according to claim 1, wherein the width of the pressing block is 10-15 mm, and gaps of 2-4 mm are formed between two side faces of the pressing block and the inner side faces of the clamping blocks.

4. The auxiliary pre-bending tool for the inverted-T-shaped reinforcing bar according to claim 1, wherein the adjusting bolt blind hole is formed above the fastening bolt through hole.