CN2256381Y

CN2256381Y - Shock-absorption guide wheel

Info

Publication number: CN2256381Y
Application number: CN 96235705
Authority: CN
Inventors: 彭均地
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-03-05
Filing date: 1996-03-05
Publication date: 1997-06-18
Anticipated expiration: 2006-03-05

Abstract

The utility model relates to a shock-absorption guide wheel, which can bear an appliance with a large load and has obvious shock-absorption effect. The utility model is characterized in that a steel ball of which the upper end surface is provided with a support plate is arranged in a casing; a spring is arranged between the upper end surface of the support plate and the top end surface of the interior of the inner cavity of the casing; the steel ball and the support plate are touched by a spherical surface; the lower part of the steel ball is supported on the stage plane table of a guiding shaft to form a point touch; the utility model flexibly rotates within the range of 360 DEG. The utility model has the advantages of obvious shock-absorption effect and compact integral structure. The utility model can bear the supporting and guiding of a large load.

Description

The damping track adjusting wheel

The utility model relates to a kind of mechanical shock absorption track adjusting wheel of bearing bigger load and having shock-absorbing function.

The existing mechanical track adjusting wheel is by overcoat and inner covering, the wheel carrier of guide shaft and captive joint thereof, formations such as pilot bar, the upper surface of its guide shaft contacts with the top end face of overcoat, and two contact surfaces are when relative motion, and it is bigger to rub, therefore the track adjusting wheel of this structure is only applicable to bear the supporting guiding of less load apparatus, and the rotation underaction sometimes, also needs to realize turning to by artificial swing pilot bar.The track adjusting wheel that also occurred various ways in recent years on the market, the Chinese patent communique was also put down in writing, its structure is that spheroid is that sphere contacts with the top end face of overcoat, the lower surface is bearing on the step plane of guide shaft, and it rotates flexibly, and friction force reduces, but there is not shock absorption device in its structure, only depend on air to play cushioning effect, during use, shake bigger.

The utility model purpose provides a kind of shock absorption device that has at above-mentioned weak point, and is simple in structure, and practicality can be born than heavy load, rotates very damping track adjusting wheel flexibly.

Task of the present utility model is finished like this: be provided with a spheroid in the inner chamber of overcoat, the top of spheroid is provided with a supporting plate, be provided with a spring between the interior top end face of the upper surface of supporting plate and overcoat inner chamber, the lower surface of supporting plate is that a sphere contacts with spheroid, form spherical raceway, the lower support of spheroid is on the plane of step at the top end face of guide shaft, making spheroid and this plane form point contacts, be connected with a guide pin bushing in the lower end of overcoat, the lower end of guide pin bushing has pilot hole, guide shaft is captiveed joint by pilot hole with wheel carrier, and track adjusting wheel is housed on wheel carrier.

Come the utility model done below in conjunction with drawings and Examples and describe in further detail.

Accompanying drawing is the structure cutaway view of the utility model damping track adjusting wheel.

With reference to accompanying drawing, the utility model damping track adjusting wheel is by guide wheel (10), wheel carrier (9), overcoat (1), guide shaft (7), spring formations such as (2), inner chamber at overcoat (1) is placed with a spheroid (5), spheroid (5) is a steel ball, the top of spheroid (5) is provided with a supporting plate (3), between the inner end surface of the upper surface of supporting plate (8) and overcoat (1) inner chamber, be placed with spring (2), the lower surface of supporting plate (3) is that a sphere (4) contacts with spheroid (5), form spherical raceway, the lower support of spheroid (5) is on the step plane (6) at the top end face of guide shaft (7), and spheroid (5) forms point with step plane (6) and contacts.Supporting plate (3), the diameter on the step plane (6) of spheroid (5), guide shaft (7) is less than the diameter of overcoat (1).Lower end at overcoat (1) is connected with a guide pin bushing (8) with screw, and the lower end of guide pin bushing (8) has pilot hole, and guide shaft (7) connects as one by this hole and wheel carrier (9), and guide wheel (10) is contained in wheel carrier (9) and goes up also and can rotate flexibly in 360 ° of scopes.

The utility model adopts spheroid as guide body, its friction force is less, and the supporting plate of spheroid upper surface is provided with spring, and damping effect is fairly obvious, whole track adjusting wheel is rotated very flexible in 360 ° of scopes, and can bear than heavy load apparatus supporting guiding.

Claims

1, a kind of damping track adjusting wheel, it is by guide wheel (10), wheel carrier (9), overcoat (1), guide shaft formations such as (7), it is characterized in that being placed with a spheroid (5) at the inner chamber of overcoat (1), the upper surface of spheroid (5) is provided with a supporting plate (3), be provided with spring (2) between the inner end surface of the upper surface of supporting plate (3) and overcoat (1) inner chamber, the lower surface of supporting plate (3) is a sphere (4), sphere (4) contacts with spheroid (5), and the lower support of spheroid (5) is on the step plane (6) on the top of guide shaft (7);

2, damping track adjusting wheel as claimed in claim 1 is characterized in that the lower end of overcoat (1) is connected with a guide pin bushing (8), and the lower end of guide pin bushing (8) has pilot hole.