CN2387314Y

CN2387314Y - Roller type clutch of lift winch

Info

Publication number: CN2387314Y
Application number: CN 99238175
Authority: CN
Inventors: 刘权美; 张明华; 赵云华
Original assignee: SJS Ltd
Current assignee: SJS Ltd
Priority date: 1999-07-22
Filing date: 1999-07-22
Publication date: 2000-07-12
Anticipated expiration: 2009-07-22

Abstract

The utility model discloses a roller-type clutch of a winch. A plurality of groups of uniformly distributed balls 12 and rollers 11 are arranged between a driving shaft 1 and a flange 4 which is connected with a rolling drum 2. Under the function of a shifting fork 17 which is connected with a handle, a slide sleeve 5 which is positioned outside the flange is extruded out or is pressed in a long slot of the driving shaft 1 by grooves and protrusions which are arranged on the inner circular surface, the rolling drum 2 rotates or stops, and thus the functions of engagement and disengagement are obtained. The utility model overcomes the defect of the existing jaw clutch of the winch that the impact abrasion is so large that the extruding counter force is generated. The locking and the operation of the utility model are more reliable and stable.

Description

The roller type winch clutch

In order to cylinder 2 is engaged and the device that separates with transmission shaft 1, be the jaw clutch (see figure 5) on the existing puffer.This clutch is difficult for engaging when motion, has impact, repeatedly after the impact wear, can make the master, be formed wedge surface by the tooth portion of motion block (22,23), the axial thrust load that is produced will make piece 22 initiatively have one after embedding to deviate from embeddedly by the trend of motion block 23, cause bumpy motion thus.In addition, this clutch, initiatively the locking of piece is to adopt jump ring 24, since jump ring the active piece stirred on transmission shaft 1 by handle 25 to move with realize with by the embedding of motion block 23 or the process of deviating from, to on transmission shaft,, the opening and closing distortion in a locating slot, move on in another locating slot so that taking place thereupon, thereby the time grown, simultaneously during the higher operating mode of speed, locking is just very unreliable to heavy duty. this also is that jaw clutch uses of a specified duration just to produce the reliable reason of bumpy motion.

The purpose of this utility model is above-mentioned winch clutch structure is improved, and a kind of roller type winch clutch is provided, and to overcome impact, eliminates counter-force, makes clutch locks and operation more reliable.

Above-mentioned purpose is achieved like this: adorn a flange 4 on transmission shaft 1, this flange and cylinder 2 link, uniform ball set 12 and one roller 11 of compatibility with it is set in the flange 4, ball is positioned at the through hole on the flange, roller and ball radially adjoining, leave the uniform elongated slot that equates with roller quantity on the cylinder of flange intermediate solid drive shaft 1, outside flange, be fitted with a sliding sleeve 5, make the groove that equates with every group of ball quantity on its inner headed face, sliding sleeve 5 links to each other with shift fork 17, leaves the draw-in groove of handle dibit locking on the shell of clutch.The described flange 4 inner ball set numbers that are provided with are no less than 3, and every group of ball number is no less than 2.

When handle is in position shown in Figure 1 (i.e. the position of " closing "), shift fork 17 makes the convex portions in the sliding sleeve 5 head on ball 12 in flange 4 holes, the roller 11 adjacent with ball is pressed in the elongated slot of transmission shaft 1, thereby make the power of rotatingshaft 1 pass to flange 4, drive cylinder 2 and rotate by roller 11; When handle be in position shown in Figure 2 (promptly " and from " the position) time, shift fork 17 makes the groove of sliding sleeve 5 facing to the ball 12 in flange 4 holes, roller 11 is under the effect of transmission shaft 1 elongated slot lateral force, outwards be extruded until promoting ball 12 and enter in the groove of sliding sleeve 5, like this, roller 11 is all deviate from elongated slot, and transmission shaft 1 is thrown off with flange 4, and cylinder 2 promptly stops operating.

The utility model by inside and outside extruding force effect roller obtain " from ", " closing " function, do not have to impact, do not have and withdraw from counter-force, thereby engage easily, steadily, motion stabilization is reliable.

Below in conjunction with the accompanying drawing embodiment that has a talk.Referring to Fig. 1～Fig. 4.

Fig. 1 is in the axial sectional view of " closing " state for the utility model;

Fig. 2 for the utility model be in " from " the axial sectional view of state;

Fig. 3 is the utility model Figure 1B-B place sectional view;

Fig. 4 is that the A of the utility model Fig. 1 is to view.

Fig. 5 is the axial sectional view of jaw clutch.

Whole clutch device is in shell 13, shell 13 is supporting the axle head of transmission shaft 1, uniform 4 elongated slots that can hold roller 11 on transmission shaft 1 cylinder, the flange 4 interior uniform 4 groups of ball set that contain this propeller section, 2 balls 12 are set in every group, these balls are positioned at the through hole of leaving on the flange 4, every group of ball all with a roller 11 radially adjoinings, flange 4 outer its inner headed faces of installing have 2 sliding sleeves 5 that can hold the groove of ball, uniform 4 groups of pins 8 and spring 7 thereof on the sliding sleeve 5, rise sliding sleeve guiding and pressuring action, bolt 9 is linked together cover plate 6 and flange 4, and shift fork 17 middle parts and Handleset link, by screw 19 in the two ends cross-over connection in sliding sleeve in 5 the groove, and the top is hinged with shift fork 17 and shell 13 by screw 20 herein, and the outer housing cover 21 that has the dibit draw-in groove is installed on the shell 13 that handle stretches out the place.In order to prevent from draw-in groove, to move out, locking device can be set on handle because of mechanical vibration cause handle.The locking device that this example adopts is made up of outer tube 16, interior pipe 15, the spring 14 and the pin 18 that are positioned in the pipe, what handle and shift fork 17 were linked is interior pipe 15, the appropriate location that is positioned at the spring lower end is on inner pipe left through slotted hole, with leave through hole on the corresponding outer tube 16 of this slotted hole, pin 18 passes inner and outer pipes under spring 14.When handle was positioned at draw-in groove, spring 14 was pressed in the draw-in groove pin 18, realized locking; On carry outer tube 16, pin 18 is along rising draw-in groove on the interior pipe range holes, handle is promptly removable, after putting in place, discharges outer tube, spring resets pin, is locked in the draw-in groove again.The employing of this handle locking device can make the operation of clutch reliable more, stable.

Claims

1. roller type winch clutch, has shell 13, transmission shaft 1, shift fork 17 and handle, transmission shaft 1 axle head is supported in the shell 13, shift fork 17 links with handle, be hinged on the shell 13, it is characterized in that: flange 4 is housed on the transmission shaft 1, this flange 4 links with cylinder 2, has the roller 11 that uniform ball set 12 and is joined with it in the flange 4, ball 12 is positioned at the through hole on the flange, roller 11 and ball 12 radially adjoinings, have the uniform elongated slot that equates with roller quantity on the cylinder of transmission shaft 1, flange has sliding sleeve 5 outward, has the groove that equates with every group of ball quantity on its inner headed face, sliding sleeve 5 links with shift fork 17, has handle locking dibit draw-in groove on the shell.

2. roller type winch clutch according to claim 1 is characterized in that: set ball set number is no less than 3 in the described flange 4, and every group of interior ball number is no less than 2.

3. roller type winch clutch according to claim 1, it is characterized in that: have the locking device of forming by spring 14 in outer tube 16, interior pipe 15, the interior pipe and pin 18 on the handle, the appropriate location that is positioned at the spring lower end on the interior pipe 15 has through slotted hole, with have through hole on the corresponding outer tube 16 of this slotted hole, pin 18 passes inner and outer pipe under spring 14.