CN203604566U

CN203604566U - Cam stroke amplifying device

Info

Publication number: CN203604566U
Application number: CN201320730454.5U
Authority: CN
Inventors: 姜静慧
Original assignee: CHONGQING FENGGUO QIYANG TECHNOLOGY DEVELOPMENT Co Ltd
Current assignee: CHONGQING FENGGUO QIYANG TECHNOLOGY DEVELOPMENT Co Ltd
Priority date: 2013-11-19
Filing date: 2013-11-19
Publication date: 2014-05-21
Anticipated expiration: 2023-11-19

Abstract

The utility model relates to a cam stroke amplifying device which comprises a base. A stroke amplifying mechanism is arranged on the base, and comprises a support fixed to the base. A horizontal sliding rod and a fixed rack are arranged on the support. A vertical rod is hinged to the horizontal sliding rod. The bottom end of the vertical rod is fixedly connected with a sector gear. The sector gear is meshed with the rack. A stop pin is fixedly arranged on the horizontal sliding rod. The stop pin makes contact with the outer edge of a cam. When the cam rotates, the outer edge of the cam makes contact with the stop pin, the horizontal sliding rod is driven to move horizontally, and the moving distance is the stroke of the cam. In addition, due to the facts that the vertical rod with the sector gear is hinged to the horizontal sliding rod, and the sector gear is meshed with the fixed rack, the horizontal sliding rod moves to drive the sector gear to swing, the other end of the vertical rod with the sector gear is driven to swing, and the swinging distance is the ratio of the radius of the vertical rod to the radius of the sector gear.

Description

Cam stroke amplifying device

Technical field

The utility model relates to a kind of mechanical device, is specifically related to a kind of amplifying device of cam stroke.

Background technique

Cam mechanism is a kind of common mechanism, and because the difficulty of processing of cam mechanism is low, and cam also has the feature of self-locking, widely applies among mechanical device.But due to the structural feature of cam self, in the time need to utilizing cam mechanism to attempt to obtain larger move distance, often need larger structure space, or need larger cam mechanism, this is difficult to accomplish in limited space.

Model utility content

The technical problems to be solved in the utility model be cam structure in the time obtaining larger move distance, often need larger structure space, be difficult to realize in limited space.

For achieving the above object, the technical solution of the utility model is: cam stroke amplifying device, comprise base, described base is provided with Cam rest, on described Cam rest, be hinged with the camshaft of level, described cam the tip of the axis is fixed with cam, on described base, be also provided with stroke amplifying mechanism, described stroke amplifying mechanism comprises the support being fixed on base, described support is provided with a horizontal sliding bar and a fixing tooth bar, a hinged montant on described horizontal sliding bar, the bottom of described montant is fixedly connected with a tooth sector, described fan tooth wheel and rack engagement, on described horizontal sliding bar, be also fixed with a backing pin, described backing pin contacts with the outer rim of cam.

While adopting technique scheme, when rotating cam, the outer rim contact backing pin of cam, drives horizontal sliding bar to move horizontally, and mobile distance is exactly the lift of cam.Add and on horizontal sliding bar, be hinged with the montant with tooth sector, tooth sector engages with fixing tooth bar, therefore, the movement of horizontal sliding bar will drive the swing of tooth sector, and then cause with the other end of the montant of tooth sector and swing, the distance of its swing is exactly the ratio of montant and tooth sector radius.

Further, the length of described montant and the radius ratio of tooth sector are 4:1.

Further, the length of described montant and the radius ratio of tooth sector are 5:1.

Further, in order to prevent that lever and cam Long Term Contact from causing wearing and tearing, is arranged with roll sleeve on described backing pin.

Accompanying drawing explanation

Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail:

Fig. 1 is the utility model cam stroke amplifying device embodiment's structural representation.

Embodiment

As shown in Figure 1, the utility model cam stroke amplifying device, comprises base 1, is fixed with Cam rest 2 on base 1, is hinged with the camshaft 21 of level on Cam rest 2, and the end of camshaft 21 is fixed with cam 22.On base 1, be also provided with stroke amplifying mechanism, the trip enlarger comprises the support 3 being fixed on base, a horizontal sliding bar 31 and a fixing tooth bar 32 are installed on support 3, a hinged montant 4 on horizontal sliding bar 31, a tooth sector 41 has been welded in the bottom of montant 4, and this tooth sector 41 engages with tooth bar 32.On horizontal sliding bar 31, also welded a backing pin 42, backing pin 42 contacts with the outer rim of cam 22.

When use, when rotating cam 22, the outer rim contact backing pin 42 of cam 22, drives horizontal sliding bar 31 to move horizontally, and mobile distance is exactly the lift of cam 22.Add and on horizontal sliding bar 31, be hinged with the montant 4 with tooth sector 41, tooth sector 41 engages with fixing tooth bar 32, therefore, the movement of horizontal sliding bar 31 will drive the swing of tooth sector 32, and then cause with the other end of the montant 4 of fan tooth 41 and swing, the distance of its swing is exactly montant 4 and the ratio of tooth sector 41 radiuses.Can choose the length of montant 4 and the radius ratio of tooth sector 41 is 5:1 or 4:1.

Above-described is only preferred implementation of the present utility model; should be understood that; for a person skilled in the art; do not departing under the prerequisite of the utility model structure; can also make some distortion and improvement; these also should be considered as protection domain of the present utility model, and these can not affect effect and practical applicability that the utility model is implemented.

Claims

1. cam stroke amplifying device, comprise base, described base is provided with Cam rest, on described Cam rest, be hinged with the camshaft of level, described cam the tip of the axis is fixed with cam, it is characterized in that, on described base, be also provided with stroke amplifying mechanism, described stroke amplifying mechanism comprises the support being fixed on base, described support is provided with a horizontal sliding bar and a fixing tooth bar, a hinged montant on described horizontal sliding bar, the bottom of described montant is fixedly connected with a tooth sector, described fan tooth wheel and rack engagement; On described horizontal sliding bar, be also fixed with a backing pin, described backing pin contacts with the outer rim of cam.