CN102797773A

CN102797773A - Safety clutch for hydraulic transmitting torque

Info

Publication number: CN102797773A
Application number: CN2012103039729A
Authority: CN
Inventors: 成健威; 成建宁; 成铭; 成悦
Original assignee: FUXIN JINGGONG HYDRAULIC Co Ltd
Current assignee: FUXIN JINGGONG HYDRAULIC Co Ltd
Priority date: 2012-08-24
Filing date: 2012-08-24
Publication date: 2012-11-28

Abstract

The invention belongs to mechanical equipment, and particularly relates to a safety clutch for hydraulic transmitting torque. The safety clutch comprises a main body (2), a left end cover (8), a right end cover (6) and a shaft (4), wherein the shaft (4) is arranged in a coaxial hole in the main body (3) and the left and right end covers (8,6); a pinion (2) is arranged on the shaft (4) in the main body (3); a gear ring (1) is arranged in an eccentric inner hole of the main body (3); the inner gear ring (1) is in meshed transmission with the pinion (2); a crescent isolation block (5) is arranged opposite to a meshed position between the pinion (2) and the inner gear ring (1); left and right enclosed spaces (C,B) are formed among the inner gear ring (1), the pinion (2), the main body (3), the left and right end covers (8,6) and the isolation block (5); and hydraulic unloading valves (7) are arranged between corresponding left and right enclosed spaces (C,B) on the left and right end covers. A separating function is realized through idle rotation of a driving part of the safety clutch for hydraulic transmission torque, and the safety clutch has high torque transmitting stability and high accuracy.

Description

The safety clutch of hydraulic pressure transfer torque

Technical field

The invention belongs to machinery, particularly a kind of safety clutch of hydraulic pressure transfer torque.

Background technique

Safety clutch is to be used for machine work accurately to limit torque transmitted; The transmitting torque structural type of traditional safety clutch is friction disk type and inserted type, and control type is spring compression type, electromagnetic type, hydraulic type and pneumatic type, hydraulic type then be to lean on the friction plate transmitting torque; By hydraulic control; The safety clutch of above-mentioned various forms along with the variation of environmental conditions then friction plate and chimeric can produce heavy wear, the transmitting torque limit value also can change thereupon, is difficult to satisfy the requirement that more accurately limits torque; And cause the error of machinery action, cause shorten the working life of safety clutch simultaneously.

Summary of the invention

The objective of the invention is to overcome above-mentioned technical deficiency, provide a kind of simple in structure, good stability, limit the safety clutch of the high hydraulic pressure transfer torque of torque validity.

The technological scheme that technical solution problem of the present invention adopts is: the safety clutch of hydraulic pressure transfer torque comprises: main body, left end cap, right end cap, axle; Be characterized in the concentric hole in main body and left and right end cap axle being housed; On the axle in main body small gear is housed; In the eccentric inner hole of main body, adorn internal gear, internal gear and small gear part engagement driving are equipped with meniscate spacing block on the opposite of small gear and internal gear engagement place; Form the left and right enclosed space in two places between internal gear, small gear, main body, left and right end cap and the spacing block, between the corresponding left and right enclosed space on the left and right end cap, the hydraulic pressure unloading valve is housed all.

The invention has the beneficial effects as follows: the torque limiting value of the safety clutch of hydraulic pressure transfer torque adopts unloading valve control; When hydraulic coupling surpasses limit value; Form liquid circulation in liquid off-load to the negative pressure enclosed space of enclosed space, secondary part stops the rotation, and the empty rotation of active part realizes separation function; Its transmitting torque good stability, validity is high.

Description of drawings

Specify with embodiment below in conjunction with accompanying drawing.

Fig. 1 is the safety clutch structure partial sectional view of hydraulic pressure transfer torque.

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

Among the figure, the 1-internal gear; The 2-small gear; The 3-main body; The 4-axle; The 5-spacing block; The 6-right end cap; 7-hydraulic pressure unloading valve; The 8-left end cap; The right enclosed space of B-; C-left side enclosed space.

Embodiment

Embodiment, with reference to accompanying drawing 1,2, the left and right two ends of the main body 3 of the safety clutch of hydraulic pressure transfer torque are fastening with left end cap 8, right end cap 6 usefulness screws, and axle 4. is housed in the concentric hole in main body 3 and left and right end cap 8,6.Be fixed with small gear 2 on the axle 4 in main body 3, internal gear 1 is housed in the eccentric inner hole of main body 3, internal gear 1 and small gear 2 part engagement driving, the thickness size of internal gear 1 and small gear 2 is slightly smaller than the thickness size of main body 3.Meniscate spacing block 5 is equipped with at place, opposite in internal gear 1 and small gear 2 engagement places, forms left enclosed space C and right enclosed space B between internal gear 1, small gear 2, main body 3, left and

right end cap

8,6 and the spacing block 5.Between corresponding left and right enclosed space C, the B hydraulic pressure unloading valve 7 is being housed on the left and

right end cap

8,6.

The working principle of the safety clutch of hydraulic pressure transfer torque is: when main body 3 turns clockwise as active part; Because main body 3 has off-centre with internal gear 1, promptly drive internal gear 1 and rotate in the same way, internal gear 1 produces engagement with small gear 2; The volume that makes right enclosed space B from large to small; Because left and right enclosed space C, the path that B is provided with to be connected with the outside, liquid is again incompressible medium, makes right enclosed space B produce hydraulic coupling; Drive driven axle 4 and rotate in the same way, realize engaging the function of transmitting torque.When right enclosed space B from large to small, the volume of left enclosed space C then changed from small to big, and produced negative pressure.Because at left and

right end cap

8,6 corresponding left and right enclosed space C, B place dress unloading valve 7; When driven axle 4 torques surpassed limit value, the fluid off-load of right enclosed space B formed the fluid circulation to left enclosed space C; Driven axle 4 stops the rotation; Main body initiatively 3 empty rotations, main body 3 can be driving and driven each other with axle 4, realizes separation function.

Claims

1. the safety clutch of a hydraulic pressure transfer torque; Comprise main body (3), left end cap (8), right end cap (6), axle (4); It is characterized in that being equipped with in the concentric hole in main body (3) and left and right end cap (8,6) axle (4); On the axle (4) in main body (3) small gear (2) is housed; In the eccentric inner hole of main body (3), adorn internal gear (1), internal gear (1) and small gear (2) part engagement driving are equipped with meniscate spacing block (5) on the opposite of small gear (2) and internal gear (1) engagement place; Form the left and right enclosed spaces in two places (C, B) between internal gear (1), small gear (2), main body (3), left and right end cap (8,6) and the spacing block (5), between the corresponding left and right enclosed space on the left and right end cap (C, B), hydraulic pressure unloading valve (7) is housed all.