CN104632928A - Blade-type hydraulic torque transmitting safety clutch - Google Patents

Abstract

The invention belongs to hydraulic components and particularly relates to a blade-type hydraulic torque transmitting safety clutch. A shaft (4) is mounted in a hole in a rotor (1), a hole in a second end cover (8) and a hole in a first end cover (6), wherein the hole in the rotor (1), the hole in the second end cover (8) and the hole in the first end cover (6) are coaxial. The rotor (1) is arranged in an eccentric inner hole of a stator (3). An eccentric distance exists between the inner surface of the stator (3) and the axis of the rotor (1). The rotor (1) is fixedly mounted on the shaft (4). Multiple blade grooves (1-1) are evenly distributed in the rotor (1) in the radial direction. Springs (5) are mounted at the inner ends of the blade grooves (1-1). Blades (2) are movably mounted in the blade grooves (1-1) and located at the outer ends of the springs (5). The outer ends of the blades (2) abut against the inner surface of the stator (3). The rotor (1), the blades (2), the stator (3), the first end cover (6) and the second end cover (8) form a first closed space A and a second closed space B. Hydraulic unloading valves (7) are mounted on the second end cover (8) and the first end cover (6) and correspond to the second closed space B and the first closed space A respectively. The blade-type hydraulic torque transmitting safety clutch is simple in structure, safe, reliable, good in torque transmitting stability and high in accuracy.

Description

Vane hydraulic transmitting torque safety clutch

Technical field

The invention belongs to hydraulic component, particularly a kind of vane hydraulic transmitting torque safety clutch.

Background technique

Safety clutch is used to accurately limit the torque of transmitting; when the torque of secondary part exceedes a certain limit value; namely the clutch shielded; when the torque of secondary part does not exceed limit value; have the function of plasmid conjugation torque, safety clutch is mainly used in the transmission system that large overload likely occurs machine work process.The transmitting torque structural type that traditional safety clutch is conventional is friction disk type and embedded, and control form is spring compression type, electromagnetic type, hydraulic type and pneumatic type, hydraulic type be then by the control wafer transmitting torque that rubs, by hydraulic control, then friction plate and chimeric part can produce heavy wear along with the change of environmental conditions for the safety clutch of above-mentioned various forms, transmitting torque limit value also can change to some extent, so just be difficult to meet the requirement more accurately limiting torque, and cause the error of machinery action, also cause shorten the working life of safety clutch simultaneously.

Summary of the invention

The object of the invention is to overcome above-mentioned technical deficiency, provide a kind of structure simple, stability is good, limits the vane hydraulic transmitting torque safety clutch that torque validity is high.

The technological scheme that technical solution problem of the present invention adopts is: vane hydraulic transmitting torque safety clutch comprises hydraulic unloading valve, end cap one, end cap two, blade, spring, feature is rotor and end cap two, in concentric shafts central hole in end cap one, axle is housed, rotor is placed in the eccentric inner hole of stator, stator inner surface and rotor axis have throw of eccentric, rotor is installed on axle, the radial equipartition of rotor is provided with multiple blade groove, the inner shock mount of blade groove, in the blade groove of outer spring end, blade is equipped with in activity, blade outer end top is pressed with on stator inner surface, rotor, blade, stator, end cap one, enclosed space one is formed between end cap two, enclosed space two, at end cap two, corresponding enclosed space two on end face lid one, all hydraulic unloading valve is housed between enclosed space one.

The invention has the beneficial effects as follows: vane hydraulic transmitting torque safety clutch structure is simple, safe and reliable, torque limiting value adopts unloading valve to control, when hydraulic coupling exceedes restriction, the liquid off-load of enclosed space, to negative pressure, forms liquid-circulating in enclosed space, when secondary part stops the rotation, active part sky rotates and realizes separation function, and its transmitting torque good stability, validity is high.

Accompanying drawing explanation

Illustrate with embodiment below in conjunction with accompanying drawing.

Fig. 1 is vane hydraulic transmitting torque safety clutch front sectional view.

Fig. 2 is the C-C sectional view of Fig. 1.

] in figure, 1-rotor; 1-1-blade groove; 2-blade; 3-stator; 4-axle; 5-spring; 6-end cap one; 7-hydraulic unloading valve; 8-end cap two; A-enclosed space one; B-enclosed space two.

Embodiment

Embodiment, with reference to accompanying drawing 1,2, in the coaxial central hole in the rotor 1 of vane hydraulic transmitting torque safety clutch and end cap 28, end cap 1, axle 4 is housed, rotor 1 is placed in the eccentric opening of stator 3, there is centripetal moment in stator 3 internal surface and rotor 1 axle center, and rotor 1 is installed on axle 4.The radial equipartition of rotor 1 is provided with seven blade groove 1-1, or the inner shock mount 5 of 5 ~ 15 odd number blade groove 1-1, blade groove 1-1, and in the blade groove 1-1 of spring 5 outer end, blade 2 is equipped with in activity, and top, blade 2 outer end is pressed on stator 3 internal surface.Form enclosed space one A, enclosed space two B between rotor 1, blade 2, stator 3, end cap 1, end cap 28, end cap 28, end cap 1 are all equipped with hydraulic unloading valve 7 between corresponding enclosed space two B, enclosed space one A.

The working principle of vane hydraulic transmitting torque safety clutch is: when stator 3 turns clockwise as active part, because have bias between stator 3 and rotor 1, blade 2 all the time near on stator 3 internal surface, makes enclosed space one A volume from large to small again.Due to the path that enclosed space one A, enclosed space two B are not connected with outside, liquid is incompressible medium again, makes enclosed space one A hydrodynamic force, acts on blade 2, blade 2 drives driven rotor 1 together with axle 4 rotating in same direction, realizes the function of plasmid conjugation torque.Report simultaneously from large to small at enclosed space one A, the volume of enclosed space two B then changes from small to big, produce negative pressure, due to the end cap 1 between corresponding enclosed space one A, enclosed space two B, end cap 28 being all equipped with hydraulic unloading valve 7, when hydraulic coupling exceedes limit value, the fluid off-load of enclosed space one A is in enclosed space two B, form oil circulation, driven axle 4 stops the rotation, and stator 3 sky initiatively rotates, and realizes separation function.When stator 3 is rotated counterclockwise as active part, or axle 4 is when as active part, stator 3 is secondary part, according to above-mentioned working principle, realizes the safety clutch function of plasmid conjugation torque or separation equally.

Claims (1)

1. a vane hydraulic transmitting torque safety clutch, comprises hydraulic unloading valve (7), end cap one (6), end cap two (8), blade (2), spring (5), is characterized in that rotor (1) and end cap two (8), axle (4) is housed in the coaxial central hole in end cap one (6), rotor (1) is placed in the eccentric inner hole of stator (3), there is throw of eccentric in stator (3) internal surface and rotor (1) axle center, rotor (1) is installed on axle (4), the radial equipartition of rotor (1) is provided with multiple blade groove (1-1), blade groove (1-1) inner shock mount (5), blade (2) is equipped with in blade groove (1-1) the interior activity of spring (5) outer end, top, blade (2) outer end is pressed on stator (3) internal surface, rotor (1), blade (2), stator (3), end cap one (6), enclosed space one A is formed between end cap two (8), enclosed space two B, at end cap two (8), upper corresponding enclosed space two B of end face lid one (6), hydraulic unloading valve (7) is all housed between enclosed space one A.