CN204267552U - A kind of screw mandrel Quick clutch mechanism - Google Patents

Abstract

A screw fast clutch mechanism includes a power shaft, a bearing, a support, a left clutch sleeve, a right clutch sleeve, a rotary sleeve, a safety pin, a screw shaft, a fixed pin, a steel sleeve, a positioning steel ball group, and a handle. The power shaft is supported in the inner hole of the support through bearings, the power shaft is connected to the left clutch sleeve, and the right clutch sleeve is fitted in the inner hole of the support to move axially, and the inner hole of the right clutch sleeve is matched with the screw shaft. The outer end of the safety pin fixed on the screw shaft is snapped into the axial groove of the right clutch sleeve, the swivel sleeve is fitted on the outer circle of the support through the shaft hole, and the fixed pin on the swivel sleeve passes through the pin on the support. The half helical groove enters the outer ring groove of the right clutch sleeve, and the rotating sleeve is provided with a control handle and a positioning steel ball group. The left clutch sleeve and the right clutch sleeve are designed as end face rectangular tooth structures on the contact end faces. The end face teeth are combined to realize the connection transmission, and the end face teeth are separated so that the power shaft rotates and the screw rod does not rotate.

Description

A screw fast clutch mechanism

technical field

The utility model relates to a connection and clutch mechanism in mechanical transmission, which belongs to a mechanical transmission device and is mainly used in the working condition that requires clutch in the mechanical transmission system.

Background technique

In the mechanical transmission system, there are many connection structures between the shaft groups. The fixed sleeve can be connected but cannot be clutched. The mechanical friction clutch has a large structure and is easy to slip, with low transmission accuracy.

Contents of the invention

In order to realize the small space between the shaft groups of the mechanical mechanism, high precision and high reliability clutch transmission, the utility model provides a fast clutch mechanism of the screw rod, which can realize the fast clutch between the screw rod and the power shaft, and has a compact structure. The screw connection and transmission are stable and reliable.

The technical scheme of the utility model is: a fast clutch mechanism for mechanical screw drive, including a power shaft, a bearing, a support, a left clutch sleeve, a right clutch sleeve, a rotary sleeve, a safety pin, a screw shaft, a fixed pin, a steel Set, positioning steel ball group, handle. The power shaft is supported on the inner hole surface of the support through bearings, and the end of the power shaft is fixedly connected with the left clutch sleeve through a pin. The outer circle of the right clutch sleeve fits in the inner hole of the support and can move axially. The inner hole of the screw shaft is matched with the screw shaft. A safety pin is fixed on the screw shaft. The outer end of the safety pin is inserted into the axial groove of the right clutch sleeve. On the outer circle, the fixed pin on the rotary sleeve passes through the semi-helical groove on the support and enters the outer circumferential groove of the right clutch sleeve. The top of the fixed pin is provided with a steel sleeve to reduce friction. The rotary sleeve is provided with a control handle and The positioning steel ball group realizes the axial positioning of the right clutch sleeve. The left clutch sleeve and the right clutch sleeve are designed as end face rectangular tooth structures on the contact end faces. The end face teeth are combined to realize the connection transmission, and the end face teeth are separated so that the power shaft rotates and the screw rod does not rotate.

When in application, the handle on the steering sleeve is rotated, and the fixed pin rotates in the spiral groove on the support and moves axially. The steel sleeve at the end of the fixed pin drives the right clutch sleeve to move to the left through the ring groove, and the right clutch sleeve and the left clutch When the sleeve is combined, the power shaft transmits the motion to the screw rod. When the handle is reversed, the rotary sleeve and the right clutch sleeve move in the opposite direction. The right clutch sleeve is separated from the left clutch sleeve. The power shaft rotates but the screw rod does not rotate.

Description of drawings

Accompanying drawing 1 is a kind of screw rod fast clutch mechanism figure of the utility model.

Detailed ways

Referring to the accompanying drawings, the utility model provides a screw fast clutch mechanism, including a power shaft 1, a bearing 2, a support 3, a left clutch sleeve 4, a right clutch sleeve 5, a rotary sleeve 6, a safety pin 7, and a screw shaft 8 , Pin 9, steel sleeve 10,, fixed pin 11, positioning steel ball group 12, handle 13. The power shaft 1 is supported on the inner surface of the support 3 through the bearing 2, and the shaft end of the power shaft 1 is fixedly connected with the left clutch sleeve 4 through the pin 9, and the outer circle of the right clutch sleeve is fitted in the inner hole of the support 3 and It can move axially, and the inner hole of the right clutch sleeve 5 cooperates with the screw shaft 8 .

A safety pin 7 is fixed on the screw shaft 8, and the outer end of the safety pin 7 snaps into the axial groove of the right clutch sleeve 5, and the rotating sleeve 6 is mounted on the outer circle of the support 3 through the shaft hole. , the fixed pin 11 on the rotary sleeve 6 passes through the semi-helical groove on the support 3 and enters the outer circumferential groove of the right clutch sleeve 5, and the top of the fixed pin 11 is provided with a steel sleeve 10 for reducing friction.

The rotating sleeve 6 is provided with a control handle 13 and a positioning steel ball group 12 . The left clutch sleeve 4 and the right clutch sleeve 5 are designed as end-face rectangular tooth structures on the contact end faces. The end-face teeth are combined to realize the connection transmission, and the end-face teeth are separated so that the power shaft rotates and the screw mandrel does not rotate.

Claims (3)

1. a screw mandrel Quick clutch mechanism, it is characterized in that comprising line shaft, bearing, bearing, left clutch cover, right clutch cover, pivoted housing, safety pin, screw axis, fixing pin, steel bushing, locking ball group, handle, described line shaft is bearing in bearing endoporus by bearing, power axle head is fixedly connected with left clutch cover by pin, described right clutch cover cylindrical is engaged in bearing endoporus and can moves axially, the endoporus of right clutch cover coordinates with screw axis, described screw axis is fixed with safety pin, and safety pin outer end snaps in the axial groove of right clutch cover.

2. a kind of screw mandrel Quick clutch mechanism as claimed in claim 1, it is characterized in that in structure, pivoted housing is arranged on the cylindrical of bearing by shaft hole matching, fixing pin on described pivoted housing enters into right clutch cover excircle annular groove through the semi-spiral groove on bearing, fixing pin top is provided with the steel bushing lowering friction, described pivoted housing is provided with Joystick and locking ball group realizes right clutch cover axially locating.

3. a kind of screw mandrel Quick clutch mechanism as claimed in claim 1, it is characterized in that the left clutch cover described in structure, right clutch cover are designed to end face rectangular teeth structure at contact end face, end-tooth combines and realizes connecting transmission, and end-tooth is separated, and line shaft rotates and screw mandrel does not turn.