DE1974829U - SELF-CLAMPING LIFT LEVER MECHANISM. - Google Patents

Description

RA. 592 631 * 17.10. B7

M. LOHSE EISENBAU H E I D E N H E I M AT THE BRENZ

To the German Patent Office , Munich, Zweibrückenstr »12 sheets ι

File number: I 42 384 / 35d G-bm

Besch.s? Eibun

The innovation concerns a self-locking lifting lever mechanism which is mainly used in valves for opening and closing the shut-off part.

The usual manual type of actuation of a valve is done by means of a handwheel with nut and spindle. However, this type requires the necessary rotary movement of the handwheel a physically unfavorable body movement, which is particularly aggravating when the armature is heavy to be opened or closed, and the stroke of the shut-off part is particularly long. A. particularly quick opening resp. Closing is not possible due to the usually small pitch of the spindle. There is also seizure of the spindle and Nut possible if dirty.

Another type is the so-called quick release lever which the entire working stroke is overcome in one way by means of a long lever. For fittings that are difficult to move actuation is usually not possible due to the low leverage, and an extension can also be used for reasons of space of the lever does not take place, learner the quick release lever has no self-locking, so that something increases with one Operating pressure the shut-off part opens by itself. The lever can only be used for smaller sizes, as with larger fittings the lever construction takes up too large a space.

M. LOHSE EISENBAU HEIDENHEIM ON THE BRE

To the German Patent Office, Munich, Zweibrückenstr. 12 sheet 2

File number: 1 42 384 / 35d Gbm

All of these disadvantages have been addressed by the following innovations Construction overcome.

The new type of self-locking lifting lever mechanism is based on the fact that a rod, for example directly on the shut-off part a valve acts, is moved by a hand lever with great leverage in short strokes in the closing or opening direction. Through the leverage of the hand lever large forces can be overcome, which ensures easy operation even with fittings that are difficult to move. ! Furthermore, this manual movement is very convenient and without fatigue a valve can be opened and closed several times. The lifting lever mechanism also allows a quick Press to, because a medium size, can be closed or opened with approx. 10 working strokes.

A self-locking mechanism built into the mechanism blocks after each working stroke the actuating rod, so that the shut-off part of the valve in each desired position remains. Through the completely closed Execution of the lifting lever mechanism ensures the same high operational safety and through the Components that are not subject to wear have a long service life.

Heidenheim (Brenz), October 17, 1967

Claims (5)

Γ.Μ. UUL UvJ I · ι ·. · «« · M. LOHSE EISENBAU HEIDENHEIM ON THE BRENZ To Deut seiles Patentamt, Munich, Zweibrückenstr. 12 sheet 3 File number: L 42 384 / 35d Gbm Protection claims 1. Self-locking lifting lever mechanism, for manual longitudinal movement of a rod in both directions of movement, in which the rod by means of a hand lever pivotably mounted in a housing with a transport ring arranged on the hand lever and encompassing the rod in successive, short working strokes alternating with idle strokes in opposite directions , is moved in its longitudinal direction, in particular for opening and closing shut-off devices, characterized in that the rod (9) is supported by a clamping ring which is inclined in the clamping position to the rod axis (9) and has a constant cross-section that slightly exceeds the rod cross-section (5) is enclosed, which is supported on the one hand against the Sransρortring (4), on the other hand against a stop (7) fixed to the housing (1) by means of leather (13,14) and arranged by means of a hand lever (2) M. LOHSE EISENBAU HEIDENHEIM ON THE BRENZ To the German Patent Office, Munich, Zweibrückenstr. 12 sheet 4 File number: L 42 384 / 35d Gbm Cam (6) around one on the with respect to the rod's longitudinal axis the contact point of the cam (6) on the clamping ring (5) opposite point aa the housing (1) Abutment (11) is arranged pivotably against the spring force. 2. Self-locking lifting lever mechanism according to claim 1 thereby characterized in that in the clamping position the longitudinal axis of the hole (3) to the longitudinal axis of the rod (9) one Takes an angle between 0.1 ° - 45 °. 3 * Self-locking lifting lever mechanism according to claim 1 or 2, characterized in that the cam (6) on the hand lever (2) in relation to the pivot axis of the hand lever. is designed as an eccentric. 4. Self-locking lifting lever mechanism according to claim 1 to; 3, characterized in that the clamping ring (5) is provided with a roller (15) on the contact point of the cam (6) is. M. LOHSE EISENBAU HEIDENHEIM ON THE BRENZ * _{To the} German Patent Office, Munich, Zweibrückenstr. 12 sheets File number: L 42 384 / 35d Gbm 5. Self-locking lifting lever mechanism according to claim 1 "to 4, characterized in that the end of the hand lever (2) having the nooks (6) with the transport ring (4) j the clamping ring (5) and those supporting it Springs (13,14), as well as the rod (9) in. One except for the passage openings for the rod (9) and for the Hand lever (2) closed on all sides, the fixed stop (7) having housing (1) are arranged in which the Rod (9) is guided, and the passage opening for the hand lever (2) in a known manner by a sleeve (10) is closed. Heidenheim (Erenz), October 17, 1967 mti Oer We