CN2297588Y

CN2297588Y - Jaw high speed safety clutch

Info

Publication number: CN2297588Y
Application number: CN 96213275
Authority: CN
Inventors: 王海
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-06-12
Filing date: 1996-06-12
Publication date: 1998-11-18
Anticipated expiration: 2006-06-12

Abstract

The utility model relates to a jaw high speed safety clutch which is mainly composed of a half coupling at a fixed end, a half coupling at a movable end, a spring, a regulating nut and an expansion bolt, wherein the regulating nut is connected with the expansion bolt by screw threads. The jaw high speed safety clutch is characterized in that the inner wall of the back end of the half coupling at the movable end is provided with an annular step; when axial force that the half coupling at the movable end bears is stronger than component force provided by the spring, the annular step moves rearward, and as a result, the diameter of the expansion end of the expansion bolt is pressed to shrink, the regulating nut becomes free from tightly locking status and moves rearward to an extreme position rapidly due to restoring force provided by the spring, the thrust force of the spring vanishes rapidly, and then the half coupling at the movable end moves rearward rapidly to get free from being sheathed with the expansion bolt to prevent the jaw from abrasion due to slipping and from impact fracture, prolonging service life. The working torque can be increased and the working range can be enlarged through the increasing of the thrust force of the spring, and thus the utility model can be used in high speed and high load working conditions.

Description

Castellated high-speed secure clutch

The utility model relates to a kind of castellated safety clutch.

At present, general castellated safety clutch is made up of the half-clutch device of fixed end, the half-clutch device in mobile terminal, spring, adjusting nut etc.By adjusting nut Regulation spring thrust, limit transmitting torque during work with this.When overload took place, the suffered axial thrust load of the half-clutch device in mobile terminal was greater than the thrust of spring, occurred skidding between the embedding tooth and withdrawed from chimericly, interrupted transmission, thereby played overload protective function.The advantage of this clutch is simple in structure, reliable operation, and the operation precision height can be regulated operation torque etc.But the overload skidding not only makes the embedding tooth produce heavy wear, and can produce impact failure, so it only is applicable to rotating speed not too high (150-200r.p.m), load not too big (1500N, m), the transmission system that secondary part inertia is little.

The purpose of this utility model provides a kind of advantage that had both had above-mentioned clutch, also can be applicable to high speed, the high castellated high-speed secure clutch that carries situation simultaneously.

The utility model is to realize like this, it is by the half-clutch device of fixed end, and the half-clutch device in mobile terminal, spring, adjusting nut, EXPANSION ANCHOR BOLTS are formed, and the half-clutch device in mobile terminal circumferentially is fixed on the transmission shaft, its rear end inwall has a ring-shaped step, and forms groove between the transmission shaft; EXPANSION ANCHOR BOLTS is fixed on the transmission shaft, its inflating end is corresponding to half-clutch device rear end, mobile terminal, adjusting nut with scyewed joint on EXPANSION ANCHOR BOLTS, spring is contained between the half-clutch device of adjusting nut and mobile terminal, thrust by spring makes the half-clutch device in mobile terminal and the half-clutch device of fixed end chimeric, mobile adjusting nut can be regulated operation torque; When overload takes place, the suffered axial thrust load of the half-clutch device in mobile terminal is greater than the thrust of spring, moves the inflating end of its rear end extrusion expansion bolt after making the half-clutch device in mobile terminal, its diameter is shunk, adjusting nut breaks away from locking state, under the spring force effect, retreats to limit position rapidly, spring thrust disappears simultaneously, move after the half-clutch device in mobile terminal is rapid, and be enclosed within on the EXPANSION ANCHOR BOLTS by the annular groove of its rear end inwall, it is chimeric that it is withdrawed from.

Because when the castellated high-speed secure clutch of the utility model takes place in overload, spring thrust can rapidly disappear, the half-clutch device in mobile terminal withdraws from chimeric, thereby avoid the wearing and tearing and the impact failure of embedding tooth, make it can be applicable to high at a high speed operating conditions of carrying, operating range obviously enlarges, and prolongs working life simultaneously, has reduced user cost.

Fig. 1 is castellated high-speed secure clutch configuration schematic representation.

Fig. 2 is the EXPANSION ANCHOR BOLTS structural representation.

Below in conjunction with accompanying drawing the utility model is further described.

By shown in Figure 1, the half-clutch device 3 in mobile terminal circumferentially is fixed on the spline housing 2, EXPANSION ANCHOR BOLTS 7 is sleeved on the spline housing 2, its inflating end is corresponding to half-clutch device rear end, mobile terminal, the other end is fixing by set screw nut 8, adjusting nut 6 is connected on the EXPANSION ANCHOR BOLTS 7 with square threaded form, between the half-clutch device 3 of adjusting nut 6 and mobile terminal, spring 4 is housed, the thrust of spring 4 makes the half-clutch device of the half-clutch device in mobile terminal and fixed end 1 chimeric, operation torque can be regulated in the position of mobile adjusting nut 6 on EXPANSION ANCHOR BOLTS 7.On the rear end inwall of the half-clutch device in mobile terminal a ring-shaped step is arranged, and form annular groove 5 between the spline housing, the inflating end of EXPANSION ANCHOR BOLTS is squeezed after diameter shrinks, and the half-clutch device in mobile terminal can be enclosed within on the EXPANSION ANCHOR BOLTS by the groove 5 of its rear end.There is the conical surface that cooperatively interacts in the back stomidium face of the half-clutch device in mobile terminal and the EXPANSION ANCHOR BOLTS inflating end outside.When overload takes place, the half-clutch device 3 suffered axial thrust loads in mobile terminal are greater than spring 4 thrusts, make thereafter and move, thereafter the conical surface of conical surface extrusion expansion bolt 7 inflating ends of stomidium face, the EXPANSION ANCHOR BOLTS diameter is shunk, adjusting nut 6 breaks away from locking state, under the effect of spring force, retreat to limit position fast, spring thrust rapidly disappears, and simultaneously the half-clutch device 3 in mobile terminal moves after fast, and be enclosed within on the EXPANSION ANCHOR BOLTS 7 by the groove 5 of its rear end, it is chimeric that it is withdrawed from rapidly, owing to do not had spring thrust, thus avoided the wearing and tearing and the impact failure of embedding tooth.Adopt square threaded form to connect between adjusting nut and the EXPANSION ANCHOR BOLTS, can increase spring thrust, thereby increase operation torque, enlarged operating range.

Claims

1, a kind of castellated high-speed secure clutch, comprise the half-clutch device of fixed end, the half-clutch device in mobile terminal, spring, adjusting nut, the half-clutch device in mobile terminal circumferentially is fixed on the transmission shaft, spring is contained between the half-clutch device of adjusting nut and mobile terminal, the rear end inwall that it is characterized in that the half-clutch device in mobile terminal has a ring-shaped step, and forms annular groove between the transmission shaft; On the transmission shaft of half-clutch device rear end, mobile terminal, be fixed with EXPANSION ANCHOR BOLTS, its inflating end is corresponding to the rear end of the half-clutch device in mobile terminal, adjusting nut with scyewed joint on EXPANSION ANCHOR BOLTS, the inflating end of EXPANSION ANCHOR BOLTS is squeezed after diameter shrinks, and the half-clutch device in mobile terminal can be enclosed within on the EXPANSION ANCHOR BOLTS by above-mentioned groove.

2, castellated high-speed secure clutch according to claim 1, it is characterized in that the half-clutch device in mobile terminal is by axle sleeve and propeller shaft couplings, form annular groove between the ring-shaped step of its rear end inwall and the axle sleeve, EXPANSION ANCHOR BOLTS is fixed on the described axle sleeve, and its inflating end is corresponding to half-clutch device rear end, mobile terminal.

3, castellated high-speed secure clutch according to claim 2 is characterized in that there is a conical surface the back stomidium face inboard of the half-clutch device in mobile terminal.

4, castellated high-speed secure clutch according to claim 2 is characterized in that there is a conical surface in the inflating end outside of EXPANSION ANCHOR BOLTS.

5, according to claim 1 or 2 or 3 or 4 described castellated high-speed secure clutches, it is characterized in that adjusting nut connects with square threaded form with EXPANSION ANCHOR BOLTS.