CN201982566U

CN201982566U - Unidirectional rotary buffer

Info

Publication number: CN201982566U
Application number: CN2011201428386U
Authority: CN
Inventors: 史玮; 史莹
Original assignee: TIANJIN DANPU TECHNOLOGY Co Ltd
Current assignee: TIANJIN DANPU TECHNOLOGY Co Ltd
Priority date: 2011-05-06
Filing date: 2011-05-06
Publication date: 2011-09-21
Anticipated expiration: 2021-05-06

Abstract

The utility model discloses a unidirectional rotary buffer, which comprises a shaft shell and a rotating shaft, wherein two longitudinal shaft-shell rib bodies are oppositely arranged on the inner wall of the shaft shell, damping oil is filled in the shaft shell, two longitudinal rotating-shaft rib bodies are oppositely arranged on the outer wall of the rotating shaft, two movable vanes are oppositely arranged in the shaft shell along a longitudinal direction, the cross section of each vane is U-shaped, the width of an opening is larger than the thickness of each rotating-shaft rib body, the outer ends of the two rotating-shaft rib bodies are respectively inserted into the opening of a U-shaped vane, an inner cavity of the shaft shell is divided into four chambers through the shaft-shell rib bodies, the rotating-shaft rib bodies and the vanes, at least one small hole is arranged at a part close to the outer end of each rotating-shaft rib body, and a vane small hole corresponding to the small hole on each rotating-shaft rib body is arranged at a corresponding position at one side of each U-shaped vane adjacent to each rotating-shaft rib body on a clockwise/anticlockwise rotating direction. The unidirectional rotary buffer has a large damping range and a small size and is more suitable for being installed on small equipment, the used materials are fewer, and the cost is low.

Description

Unidirectional rotary buffer

Technical field

The utility model relates to a kind of buffer unit, particularly relates to a kind of unidirectional rotary buffer.

Background technique

Unidirectional rotary buffer is widely used in all kinds of daily necessitiess and the manufacturing machine.The structure of existing unidirectional rotary buffer generally as shown in Figure 1, comprise axle housing 1 and rotating shaft 2, axle housing 1 inwall is provided with two vertical axle housing muscle bodies 3 that are oppositely arranged, 4, one end of rotating shaft 2 stretches in the axle housing 1, the other end extends axle housing, the outer wall that axle housing 1 part is stretched in rotating shaft 2 has two vertical rotating shaft muscle bodies that are oppositely arranged, the part and axle housing 1 airtight fit and formation Seal cage of axle housing 1 stretched in rotating shaft 2, be marked with damping oil in the Seal cage, vertical axle housing muscle body 3, have guiding gutter 7 on 4,8, the outer wall that axle housing 1 part is stretched in rotating shaft 2 along shaft circumference to being distributed with current limliting bar 10, when rotating shaft 2 is rotated, current limliting bar 10 passes through guiding gutter under the guiding gutter inner wall limit, and the gap of current limliting bar and guiding gutter diminishes gradually.Current limliting bar 10 is fixed as damped part, and when rotating shaft 2 was rotated, by guiding gutter, and the gap of current limliting bar and guiding gutter diminished current limliting bar 10 gradually, plays buffer function under the guiding gutter inner wall limit.

But, above-mentioned existing unidirectional rotary buffer is because guiding gutter control is leaned in positive and negative rotation entirely, and the guiding gutter size is too big, can not be inner cavity size design very little, reducing the main shaft diameter influences main axe intensity again, thus can only volume be strengthened by the inner cavity size restriction, thus make buffer accessory kit volume bigger, be unsuitable for being installed on midget plant or the equipment, its application is restricted.

Summary of the invention

The purpose of this utility model provides the unidirectional rotary buffer that a kind of damping scope is big, volume is little.

For this reason, the technical solution of the utility model is as follows:

A kind of unidirectional rotary buffer, comprise axle housing and rotating shaft, be relatively set with two vertical axle housing muscle bodies on the axle housing inwall, one end of rotating shaft stretches in the axle housing and with the airtight fit of axle housing and forms Seal cage, sealing is full of damping oil in the chamber, on the outer wall of this end of rotating shaft, be relatively set with two vertical rotating shaft muscle bodies, the other end of rotating shaft extends axle housing, in axle housing, longitudinally be relatively set with two movably blades, this leaf cross-section is U-shaped and the A/F thickness greater than rotating shaft muscle body, insert respectively in the opening of a U-shaped blade outer end of two rotating shaft muscle bodies, the axle housing inner chamber is separated into four chambers by axle housing muscle body and rotating shaft muscle body and blade, be provided with at least one aperture near the external end of rotating shaft muscle place, suitable/corresponding position of being rotated counterclockwise U-shaped blade one side adjacent on the direction with rotating shaft muscle body be provided with rotating shaft muscle body on the corresponding blade aperture of aperture.

Unidirectional rotary buffer of the present utility model, owing to make full use of the axle housing intracavity space on the structure, damping oil in the flow arrangement between the chamber at two movably in the blade, the diameter of main shaft can suitably strengthen, and makes it can bear bigger torsion, so have the advantages that the damping scope is big, volume is little, use this buffer can make accessory kit exquisiter, be more suitable for being installed on the mini-plant, and use material few, cost is low.

Description of drawings

Fig. 1 is the structural profile structural representation of existing unidirectional rotary buffer;

Fig. 2 is the view of unidirectional rotary buffer of the present utility model when rotating shaft turns clockwise;

Fig. 3 is the view of unidirectional rotary buffer of the present utility model when rotating shaft is rotated counterclockwise.

Embodiment

Describe below in conjunction with the structure of accompanying drawing unidirectional rotary buffer of the present utility model.

Improvement of the present utility model is the internal structure of unidirectional rotary buffer, its external structure and same as the prior art with the Placement of other parts.Unidirectional rotary buffer of the present utility model as shown in Figures 2 and 3, comprise axle housing 20 and rotating shaft 21, be relatively set with two vertical axle housing muscle bodies 24 on the inwall of axle housing 20, one end of rotating shaft 21 stretches in the axle housing 20 and with the airtight fit of axle housing and forms Seal cage, sealing is full of damping oil in the chamber, be positioned in rotating shaft 21 on the outer wall of this end of axle housing and be relatively set with two vertical rotating shaft muscle bodies 23, the other end of rotating shaft 21 extends axle housing 20, in axle housing 20, longitudinally be relatively set with two movably blades 22, the cross section of blade 22 is U-shaped and the A/F thickness greater than rotating shaft muscle body 23, insert in the opening of a U-shaped blade 22 separately the outer end of two rotating shaft muscle bodies 23, the inner chamber of axle housing 20 is separated into four chambers by two axle housing muscle bodies 24 and two rotating shaft muscle bodies 23 and corresponding blade 22, that is: two cups 26, the chamber 28 after 27 and two, 29.Be provided with at least one aperture 30 near rotating shaft muscle body 23 outer ends places, the corresponding position that is rotated counterclockwise U-shaped blade 22 1 sides adjacent on the direction with rotating shaft muscle body be provided with rotating shaft muscle body on the corresponding blade aperture 25 of aperture.Between blade 22 and the axle housing inwall certain clearance is arranged, can under the control of main shaft muscle body, among a small circle, float.

As shown in Figure 2, when rotating shaft 21 clockwise rotates, rotating shaft muscle body 23 and blade 22 anterior interior side contacts, blade 22 has just been blocked the aperture 30 on the rotating shaft muscle body 23, damping oil just can not flow to chamber 29/28, back from cup 26/27 smoothly, and main shaft rotates difficulty, plays the effect of damping.As shown in Figure 3, when rotating shaft 21 rotates counterclockwise, aperture 30 on the rotating shaft muscle body 23 touches the rear portion of blade 22, the aperture 25 at blade rear portion is communicated with aperture 30 on the rotating shaft muscle body 23, damping oil just can be by the slit between two holes and rotating shaft muscle body and the blade, flow to cup 26/27 from chamber 29/28, back, do not produce damping during counter-rotating, thereby form unidirectional damping due to rotation effect.Because this structure has made full use of the axle housing intracavity space, damping oil in the flow arrangement between the chamber at two movably in the blade, the diameter of main shaft can suitably strengthen, and makes it can bear bigger torsion, so have the advantages that the damping scope is big, volume is little.An embodiment's of the utility model unidirectional rotary buffer, main diameter are 12mm, total length 35mm, and damping torque 0.5Nm～2.5Nm, volume is less.

Claims

1. unidirectional rotary buffer, comprise axle housing and rotating shaft, be relatively set with two vertical axle housing muscle bodies on the described axle housing inwall, one end of described rotating shaft stretches in the axle housing and with the airtight fit of axle housing and forms Seal cage, sealing is full of damping oil in the chamber, on the outer wall of this end of rotating shaft, be relatively set with two vertical rotating shaft muscle bodies, the other end of rotating shaft extends axle housing, it is characterized in that: in described axle housing, longitudinally be relatively set with two movably blades, the cross section of this blade is U-shaped and the A/F thickness greater than rotating shaft muscle body, insert respectively in the opening of a U-shaped blade outer end of two rotating shaft muscle bodies, the inner chamber of described axle housing is by axle housing muscle body, rotating shaft muscle body and blade are separated into four chambers, be provided with at least one aperture near the external end of rotating shaft muscle place, suitable/corresponding position of being rotated counterclockwise U-shaped blade one side adjacent on the direction with rotating shaft muscle body be provided with rotating shaft muscle body on the corresponding blade aperture of aperture.