Friction brake having at least one brake lever which is mounted on a solid body joint
A friction brake ( 1 ) for braking a rail-guided transport device ( 26 ), in particular a lift (elevator), having at least one brake lever ( 15 ) with a brake lining ( 4 ), which can be pressed against a rail ( 2 ) in order to brake the transport device ( 26 ), and with an actuator ( 6 ) for actuating the at least one brake lever ( 15 ). According to the invention, a solid body joint ( 36 ) is proposed, which has at least one web ( 37 ) to which a brake lever ( 3 ) is fastened, wherein the web ( 37 ) twists about the longitudinal axis ( 38 ) thereof when the brake lever ( 3 ) performs a pivoting movement. Moreover, according to the invention, means ( 42, 42′, 50, 52 ) are provided, which limit or prevent deflection of the web ( 37 ) in the lateral direction (x).
1. Friction brake ( 1 ) for braking a transport device ( 26 ), comprising at least one pivotally arranged brake lever ( 3 ) with a brake lining ( 4 ), which is elastically suspended by means of a solid body joint ( 36 ), and further comprising an actuator ( 6 ) for actuating the friction brake ( 1 ), wherein the solid body joint ( 36 ) has at least one web ( 37 ) comprising a self-supporting section to which the brake lever ( 3 ) is fastened and having two ends which are fixed, so that the web ( 37 ) twists about its longitudinal axis ( 38 ) when the brake lever ( 3 ) performs a pivoting movement, and further comprising an element ( 42 , 42 ′, 50 , 52 ) which limits or prevents deflection of the web ( 37 ) in a lateral direction (x).
2. Friction brake ( 1 ) according to claim 1 , wherein the element ( 42 , 42 ′, 50 , 52 ) comprises a lateral stop ( 50 , 52 ).
3. Friction brake ( 1 ) according to claim 2 , wherein the lateral stop ( 50 , 52 ) is configured as a plate.
4. Friction brake ( 1 ) according to claim 2 , wherein the lateral stop ( 50 , 52 ) is part of a bracket ( 52 ), which holds two webs ( 37 ) arranged parallel to and at a distance from each other.
5. Friction brake ( 1 ) according to claim 1 , wherein the element ( 42 , 42 ′, 50 , 52 ) comprises at least one connecting element ( 42 , 42 ′), which connects the web ( 37 ) to another component ( 37 , 47 ).
6. Friction brake ( 1 ) according to claim 5 , wherein the connecting element ( 42 ) is configured as a bridge or a web.
7. Friction brake ( 1 ) according to claim 5 , wherein the connecting element ( 42 ) connects a first web ( 37 ) to a second web ( 37 ) arranged in parallel.
8. Friction brake ( 1 ) according to claim 5 , wherein the connecting element ( 42 ) connects a first web ( 37 ) to a laterally positioned structural element ( 47 ).
9. Friction brake ( 1 ) according to claim 1 , wherein the solid body joint ( 36 ) comprises two webs ( 37 ) arranged parallel to and at a distance from each other, to each of which is fastened one brake lever ( 3 ), wherein the solid body joint ( 36 ) is formed from a single piece.
10. Friction brake ( 1 ) according to claim 1 , wherein the solid body joint ( 36 ) pre-tensions the brake lever or levers ( 3 ) in a release direction when the brake ( 1 ) is in a released state.
11. Friction brake ( 1 ) according to claim 1 , wherein the solid body joint ( 36 ) is arranged together with other components ( 47 , 48 , 49 ) so as to form an enclosure ( 44 ), wherein the solid body joint ( 36 ) forms a part of the enclosure ( 44 ).
12. Friction brake ( 1 ) according to claim 1 , wherein there is provided an enclosure ( 44 ) which is defined by at least two solid body joints ( 36 ) that form opposite lateral surfaces of the enclosure ( 44 ).
13. Friction brake ( 1 ) according to claim 1 , wherein the web ( 37 ) has a recess that narrows an effective cross-section of the web ( 37 ).
14. Friction brake ( 1 ) according to claim 1 , wherein the friction brake ( 1 ) comprises a spring assembly ( 8 ), which pre-tensions at least one brake lever ( 3 ) in a clamping direction (x), wherein the actuator ( 6 ) is controlled by a control unit ( 32 ) in such a way that a clamping movement of the friction brake ( 1 ) effected by the spring assembly ( 8 ) is damped, at least in phases.