ISO 3584:2020 pdf free.Road vehicles一Clevis couplings一Interchangeability.
3 Terms and definitions
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4 Designation
4.1 Reference may be made to this document both for clevis coupling mounting dimensions on the
frame and for the separate clevis coupling.
4.2 Frames in conformance with this document shall be identified by the following information, in the
order given: a) reference to this document; b) number of the category according to Table 1.
EXAMPLE Frames with mounting dimensions according to category 3: Crossmember [or drawbeam or mounting bracket) ISO 3584一Category 3
4.3 Clevis couplings meeting the requirements of this document shall be identified by the following
information, in the order given:
a) reference to this document;
b) code C 40 for 40 mm clevis couplings and C 50 for 50 mm clevis couplings, as applicable;
c) number of the category according to Table 1 or number of class according to Table 4.
EXAMPLE 1
40 mm clevis coupling according to category 3:
Clevis coupling ISO 3584 C 40一Category 3
EXAMPLE 2
50 mm clevis coupling according to class 3: Clevis coupling ISO 3584 C 50- – Class 3
EXAMPLE 3 Clevis coupling according to category 4: Clevis coupling ISO 3584 – Category 4
5 Mounting categories
5.1 Categories of drilling pattern
The dimensions for the categories of drilling pattern (see Figure 1) shall be as given in Table 1.
5.2 Dimensional requirements on frame for mounting clevis coupling
Dimensions on the frame required for mounting of the clevis coupling (see Figure 2), such as the
minimum flat surface defined by dimensions F and G, shall be as given in Table 2. Tolerances on drilling pattern dimensions shall be as shown in Figure 1.
6 Clevis Couplings
6.1 General
The requirements of 6.2 to 6.4 are applicable to all clevis couplings. Additional requirements applicable to C 40, C 50 and classified clevis couplings of both dimensions are given in 6.5.
6.2 Load requirements
The clevis coupling shall satisfy the tests specified in ISO 8718 or ISO 12357 or both.
6.3 Dimensional requirements
The maximum outer dimensions of all components of the clevis coupling shall be within the envelope
box defined in Table 3 (see Figure 3).
In order to permit safer operation of the clevis coupling, there shall be adequate free space around
actuating devices. Dimensions needed to ensure operating clearance for actuating devices are also
shown in Figure 3.
6.4 Articulation angles
The clevis coupling shall be designed so as to permit the drawbar eye, when coupled but not fitted to a vehicle, to reach the following non-simultaneous degrees of articulation:
+90° horizontally about the vertical axis from the longitudinal axis of the vehicle (see Figure 4);
+20° vertically about the transverse axis from the horizontal plane of the vehicle (see Figure 5)];
+25° axial rotation about the longitudinal axis from the horizontal plane of the vehicle (see Figure 6).
NOTE Dimensions for ensuring operating clearance between towing vehicles and trailers are given in
ISO 11406[1] and ISO 11407[2].
6.5 Additional requirements
6.5.1 C 40 clevis couplings C 40 clevis couplings shall be designed so as to permit the articulation angles described in 6.4 with drawbar eyes according to ISO 8755.
6.5.2 C 50 clevis couplings C 50 clevis couplings shall be designed so as to permit the articulation angles described in 6.4 with drawbar eyes according to ISO 1102.ISO 3584 pdf download.