CN2139641Y - Outer spring type variable-speed flier - Google Patents

Abstract

The utility model provides an outer spring type variable-speed flywheel, comprising a sun wheel 9, a chain wheel 11, a bearing ring 1, a jack 2, a pin shaft 3, a supporting plate 4 and a planetary wheel 10. The outer spring type variable-speed flywheel is mainly characterized in that a spring 5 is arranged in a small hole 7 in the supporting plate 4 of a tie rod component to cause the tie rod component and the spring to assemble independently and respectively, and the spring can be arranged conveniently and flexibly. The strength of the jack is increased, and manufacturing processing property is enhanced.

Description

Outer spring type variable-speed flier

The utility model relates to a kind of gear shift flywheel of planetary pinion transmission, particularly the external spring type gear shift flywheel.

Two very heavy flywheel in the Chinese patent 85202575.0 adopts the planetary pinion transmission, have planet wheel, very heavy and place the tie-rod member and sprocket wheel with internal tooth and sun gear engagement of the spring in the very heavy groove, wherein the tie-rod member is connected as one by bearing pin by bearer ring and support plate, join in one end and the bearer ring jail of its bearing pin, the other end and support plate riveted, the very heavy spring in placing very heavy groove that has a pin shaft hole is set on the bearing pin between bearer ring and the support plate, the spring mounting structure of this two very heavy flywheels exists such problem, in order to lay spring, have to perpendicular to very heavy pin shaft hole and be symmetrical in very heavy middle part and process flat deep trouth, so not only weakened very heavy intensity, manufacture difficulty and cost have also been increased simultaneously, when the processing deep trouth, machined burrs is ploughed under in the pin shaft hole, especially when assembling, must be preset in spring in the very heavy groove earlier, installing to bearing pin with very heavy cover simultaneously gets on, and must before support plate riveting dress, carry out, in case the riveting dress finishes, the just non-dismountable and replacing of spring, desire will be changed spring, must destroy the tie-rod member, bring difficulty for production and maintenance, increased manufacture cost and user cost greatly.

The purpose of this utility model provides a kind of external spring type gear shift flywheel, and its spring is placed on the support plate of tie-rod member, finishes mounting or dismounting independently.

The purpose of this utility model is achieved in that and forms local the protrusion on the plane of external spring type gear shift flywheel tie-rod member supporting plate, produces the aperture that penetrates at protrusion place and support plate interplanar, and spring directly is intercalated in this hole.

The utility model embeds spring because only need to produce the fixing of spring and aperture is installed on a Transverse plane of support plate, so structure is simple especially, mounting or dismounting are very easy to; Because being not limited to, the starting point in the separation structure of the riveting part of tie-rod member, manages improvement simultaneously, but with spring from be set in bearing pin and be riveting in the spring resettlement groove very heavy on the tie-rod member shift out, with being separated of tie-rod member by the riveted part, be placed on the support plate, thereby make tie-rod member and spring can finish assembling independently of one another, without interfering with each other, so the installation of spring is extremely flexible; Owing to do not settle spring in very heavy,, not only improved very heavy intensity in addition, and solved burr effectively and plough under problem in the pin shaft hole so need not process deep trouth on very heavy.

Concrete structure of the present utility model is provided by following examples and accompanying drawing.

Fig. 1 is the plan view according to a kind of external spring type gear shift flywheel that the utility model proposes.

Fig. 2 is the partial top view according to this external spring type gear shift flywheel that the utility model proposes.

The sprocket wheel (11) that Fig. 1, Fig. 2 have described by sun gear (9), band internal tooth reaches the external spring type gear shift flywheel of being made up of the tie-rod member of bearer ring (1), very heavy (2), bearing pin (3), support plate (4), spring (5), planet wheel (10) formation.

This external spring type gear shift flywheel is to form local the protrusion on the plane of tie-rod member supporting plate (4), Local Convex source (6) forms the aperture (7) that penetrates with the plane (8) of support plate (4), it is fixing that spring (5) passes aperture (7) back, thereby be installed on the support plate (4) with making spring (5) direct convenience, realize its function of use.

Claims (3)

1, a kind of gear shift flywheel of planetary pinion transmission, external spring type gear shift flywheel particularly, formed by the sprocket wheel (11) of sun gear (9), band internal tooth and by the tie-rod member that bearer ring (1), very heavy (2), bearing pin (3), support plate (4), spring (5), planet wheel (10) constitute, it is characterized in that: spring (5) is directly installed on the support plate (4).

2, external spring type gear shift flywheel according to claim 1 is characterized in that: form local protrude (6) on the plane of support plate (4), protrude (6) and form the aperture (7) that penetrates with support plate plane (8).

3, external spring type gear shift flywheel according to claim 1 is characterized in that: spring (5) directly is flush-mounted in the aperture (7) of support plate.