Small ring-grooved rivet with wide range and riveting method
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A ring groove rivet, a wide range of technology, used in rivets and other directions, can solve the problems of easy on-site installation, small clamping range, and various types of formation, and achieve high connection strength, good anti-loosening performance, and large clamping range. Effect
Inactive Publication Date: 2010-01-13
CRRC MEISHAN
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Problems solved by technology
[0005] The wide-range small ring groove rivets and the riveting method provided by the present invention are to solve the problems of common small-sized ring groove rivets with small clamping range and various types, which lead to troublesome factory inventory, error-prone on-site installation and reinstallation, etc.
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Embodiment 1
[0038] Example 1: see Figure 1 to Figure 8
[0039] See figure 1 , figure 2 , This embodiment 1 wide-range small ring groove rivet is composed of nail head 1, nail shank 2 and collar 3. Among them, the nail head 1 is a round head 1a; the collar 3 is a flange collar 3a; a , Front ring groove section 2 for extrusion fit with collar b And the rear ring groove section 2 used for riveting with the riveter at the rear end c composition. See image 3 , the diameter of the fine teeth of the front ring groove section d b Smaller than the fine tooth diameter of the rear ring groove d c .
[0040] See Table 1, Table 2, Table 3, figure 1 , figure 2 and image 3 , the selected size of the wide-range small ring groove rivets in this embodiment 1 is as follows: serial number 1, diameter specification D=5mm, diameter of fine teeth of the front ring groove section d b =3.70mm is less than the fine tooth diameter d of the rear ring groove segment c =4.11; reduction ratio β=9....
Embodiment 2
[0049] Embodiment 2: The wide-range small ring groove rivet of Embodiment 2 is identical to Embodiment 1 except for the following diameter specifications and corresponding dimensions. See Table 1, when the diameter specification D is 6, 8 or 10mm, the corresponding diameter d of the fine teeth of the front ring groove section b , The diameter of the fine teeth of the rear ring groove section d c , Outer diameter D of the front and rear ring grooves bc , polished rod section diameter D 2a , the length of the polished rod section L 2a , Nail length L 2 and clamping range L 45 etc. are three groups corresponding to serial numbers 2, 3 or 4 in Table 1, and each group has seven values and value range numbers in total.
Embodiment 3
[0050] Embodiment 3: The wide-range small ring groove rivet of Embodiment 3 is identical to Embodiments 1 and 2 except for the following head types and corresponding dimensions. See Table 2, Figure 9 , Figure 10 , Figure 11 , Figure 12 , the diameter specification D is 6, 8 or 10mm, and the nail head 1 is the diameter D of the pan head 1b, countersunk head 1c, half-round head 1d or thin half-round head 1e 1b 、D 1c 、D 1d 、D 1e and thickness L 1b , L 1c , L 1d , L 1e They are the value range numbers of No. 1, No. 2, No. 3 or No. 4 in Table 2 respectively.
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Abstract
The invention relates to a small ring-grooved rivet with wide range and a riveting method; the small ring-grooved rivet is composed of a rivet head, a rivet pole and a lantern ring, the rivet pole is composed of a polished rod section at the front end, a front ring-grooved section matched with the lantern ring in an extruding way and a rear ring-grooved section riveted with a riveting device at the rear end; the diameter of the fin thread of the front ring-grooved section is less than that of the rear ring-grooved section, and the length of the front ring-grooved section is matched with the maximum holding thickness; the advantages of high intensity, good locking performance and high corrosion resistance of the ring-grooved rivet are kept, and the holding range is increased to five times of common small ring-grooved rivet with the same diameter; in addition, the rivet is snapped at the end of the lantern ring, therefore, the rivet is artistic and tidy after being installed. The ring-grooved rivet solves the problems that the existing rivet has complex kinds caused by small holding range about 3mm, the installation field needs a plurality of kinds of the rivets to be used alternatively, and the trouble caused by storage of a plurality of kinds of the rivets or hundreds of kinds of the rivets occurs, the installation is wrong and the re-installation is needed. The invention provides various rivet heads with the diameter of 5, 6, 8 and 10mm and optimized size range and test results of the lantern ring type rivets, and is particularly suitable for the occasions which need rivets with small specification such as steel structures of railroad wagons, automobiles and bridge girders and the like.
Description
(1) Technical field: [0001] The invention relates to a novel small-sized ring groove rivet, which belongs to the category of fasteners. (two) background technology: [0002] For a long time, steel structures such as railway wagons, automobiles, and bridges have used hot riveted ordinary rivets, whose chemical composition and mechanical properties are equivalent to 4.8-grade bolts, resulting in low connection reliability of the steel structure, short maintenance cycle, and post-maintenance costs. High-level problems, unable to meet the requirements of "heavy load and speed increase" of freight. And hot rivet installation labor intensity is big, and voice is big, pollutes environment. Therefore, it is very urgent and necessary to adopt new fasteners in the key and key parts of the above-mentioned steel structure. [0003] The Chinese patent discloses a new type of fastener 'pull rivet' (ZL200520035325X, reference document 1). After cooperating with the rear ring groove sect...
Claims
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Application Information
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