 |
| ||||||||||||||||||||||||||||||||||||||||||||
Pinned joints are specified below as to the function the pin serves in a joint.
- Pinned joint for fastening
Pinned joints for fastening hold together two or more component parts without frictional connection. A good example of a pinned joint for fastening is a toothed wheel on a shaft where only low torques are to be transmitted. All types of pins can be used in joints for fastening.
Figure 7 Pinned joint for
fastening
1 pin, 2 gear wheel, 3 shaft
- Pinned joint for driving
One part of a machine drives another part, such as in switchgears or couplings which are shifted when at rest. Cylindrical pins, close-tolerance grooved pins and dowel pins can be used in joints for driving.
Figure 8 Pinned joint for
driving
1 fixed component (feather key joint) with drive pins, 2 driven component
- Pinned joint for holding
Pinned joints of this type hold one component part to another component part. Cylindrical pins and grooved pins can be used in joints for holding.
Figure 9 Pinned joint for
holding
1 holding pins with spring, 2 movable part, 3 fixed part
- Pinned joint for swivelling
Pinned joints of this type connect two or more movable or rotary component parts. Cylindrical pins, grooved cylindrical pins and center-grooved dowel pins can be used in joints for swivelling.
Figure 10 Pinned joint for
hinging
1 hinge pin, 2 hinged component I, 3 hinged component II
- Pinned joint for fitting
Pinned joints of this type fix two component parts in a definite position relative to one another. Taper pins, close-tolerance grooved pins and cylindrical pins can be used in joints for fitting.
Figure 11 Pinned joint for
fitting
1 screwed joint of the three component parts, 2 fitting pins, 3 component part I (lid), 4 component part II (spacer ring), 5 component part III (casing)
- Pinned joint for securing
Pinned joints of this type prevent parts of machines from becoming loose inadvertently under dynamic loads (vibration). Cylindrical pins, taper pins and grooved pins can be used in joints for securing.
Figure 12 Pinned joint for
securing
1 securing pin, 2 screw, 3 component part I, 4 component part II
- Pinned joint for shearing
Pinned joints of this type secure parts of machines which are connected directly with each other, from overloads. The pin in the joint will break when the load becomes too heavy. Thus, the component parts of the joint will not be damaged. Cylindrical pins can be used in joints for shearing.
Figure 13 Pinned joint for
shearing
1 shearing pins, 2 shaft I, 3 sleeve, 4 shaft II
How are pinned joints
specified?
__________________________________________________________________________
__________________________________________________________________________
__________________________________________________________________________
What types of pinned joints are
produced?
__________________________________________________________________________
__________________________________________________________________________
__________________________________________________________________________
What is typical of a pinned joint for
holding?
__________________________________________________________________________
__________________________________________________________________________
__________________________________________________________________________
What is typical of a pinned joint for
fitting?
__________________________________________________________________________
__________________________________________________________________________
__________________________________________________________________________
 |
 |
