CN102682646A

CN102682646A - Wiggle-free compound pendulum consisting of metal circular rings and circular clamping grooves

Info

Publication number: CN102682646A
Application number: CN201210146840XA
Authority: CN
Inventors: 穆万军; 胡再国
Original assignee: Sichuan University
Current assignee: Sichuan University
Priority date: 2012-05-14
Filing date: 2012-05-14
Publication date: 2012-09-19
Anticipated expiration: 2032-05-14
Also published as: CN102682646B

Abstract

The invention discloses a wiggle-free compound pendulum consisting of metal circular rings and circular clamping grooves, and relates to the field of manufacture of compound pendulums, in particular to the manufacture of the wiggle-free compound pendulum. A pendulum bar and a pendant of the conventional compound pendulum are in line contact, so that wiggle is easily produced. According to certain patents, knife edge contact is adopted, so that the pendant and the pendulum bar are low in durability. In order to overcome the shortcomings of high wiggle rate and high damage rate of the knife edge contact of an ordinary compound pendulum, the pendulum bar of the compound pendulum is formed by connecting the metal circular rings. The technical scheme is that: the metal circular rings with external diameters of 10mm and internal diameters of 6mm are manufactured by using a plurality of stainless steel or high-hardness aluminum alloy metal wires with diameters of 2mm, and are clamped by clamping bodies; through holes with diameters of 2mm are formed at an equal interval on the two sides of each clamping body; a thread is arranged in each through hole; the clamping bodies are provided with the circular clamping grooves through which the circular rings are positioned; and screws are arranged in the through holes, so that the circular rings can be fastened. The wiggle of the pendulum bar of the compound pendulum can be effectively avoided; and the knife edge contact is replaced by point contact, so that the durability of the pendulum bar and the pendant of the compound pendulum is improved.

Description

The twistless compound pendulum that metal ring and circular draw-in groove constitute

Technical field

The present invention relates to the making field of physical pendulum, the making of the twistless compound pendulum that particularly uses in the acceleration test of physical pendulum check weighing power.

Background technology

The physical pendulum fork and the suspension member of current use is that line contacts, because suspension member is out-of-level, causes the physical pendulum fork to occur twisting easily, and the level of regulating suspension member needs the long time; Have patent to adopt edge of a knife contact, the edge of a knife is a contact, can effectively avoid twisting, but the sharp more then points of proximity contact more of the edge of a knife, sharp more, then the edge of a knife will damage suspension member, and the edge of a knife itself also can wear and tear gradually, makes the durable of suspension member and fork.

Summary of the invention

Contact flimsy deficiency, the physical pendulum fork that the present invention adopts metal ring to be formed by connecting with the edge of a knife for overcoming the easy twisting of common physical pendulum.

The technical scheme that the present invention solves its technical matters employing is: the metal ring of external diameter 10mm, internal diameter 6mm is drawn close from beginning to end and is formed the physical pendulum fork, and the xsect of annulus is the circle of diameter 2mm, blocks annulus through the card body, and there is equidistant diameter 2mm through hole on the both sides of card body; Its distance is the diameter 10mm of annulus, and screw thread is arranged in the through hole, card body width 10mm; Card body thickness 1mm, card body are divided into two up and down, and two card bodies are duplicate; The card body has circular draw-in groove (shallow ridges), and circular draw-in groove diameter is 10mm, and the draw-in groove degree of depth is near 1mm; Suggestion that is to say that at 0.95mm annulus can be stuck in the draw-in groove; Two card bodies are fixed metal ring up and down, through in through hole, screwing in screw, make annulus fastening then.The suspension member of physical pendulum is stainless steel or the high hardness aluminium alloy right cylinder of diameter 3mm.

The invention has the beneficial effects as follows: the physical pendulum fork has been realized a little contacting with suspension member, can effectively avoid the twisting of physical pendulum fork; The point contact is not edge of a knife contact, and contact point is not sharp, and pressure can be realized retroaction through small deformation, thereby guarantees the peaceful coexistence of fork and suspension member, improves the durability of physical pendulum fork and suspension member.

Description of drawings

Fig. 1 is a physical pendulum fork synoptic diagram.

Fig. 2 is a card body synoptic diagram.

Wherein, 1, the physical pendulum fork, 2, the card body, 3, metal ring, 4, through hole, 5, draw-in groove.

Embodiment

Physical pendulum fork 1 is made up of the metal ring 3 of 99 diameter 10mm, and metal ring adopts the Al-alloy metal silk of stainless steel or high rigidity, and tinsel is the cylindrical of diameter 2mm; For guaranteeing the symmetry of physical pendulum fork; Use card bodies 2 to block 99 annulus, guarantee that all closely contacts of all annulus, the line that is had point of contact all cross the center of circle of each annulus, block equidistant diameter 2mm through hole 4 that has of body 2 the right and lefts; Its distance is the diameter 10mm of annulus; Card body 2 is divided into two, and it is that diameter 8mm, circular draw-in groove 5 are the same with the shape of metal ring that card body 2 has 5, two cards of circular draw-in groove body weight to close the back hollow circles that forms; The degree of depth is 0.95mm, can guarantee that draw-in groove 5 closely contacts and form the wire circle of an internal diameter 6mm with metal ring 3.

The suspension member of physical pendulum is stainless steel or the high hardness aluminium alloy right cylinder of diameter 3mm.

Claims

1. the twistless compound pendulum of metal ring and circular draw-in groove formation is made up of metal ring, suspension member, card body, draw-in groove, screw; It is characterized in that: the metal ring of external diameter 10mm, internal diameter 6mm is drawn close from beginning to end and is formed the physical pendulum fork, and the xsect of annulus is the circle of diameter 2mm; Card body width 10mm, card body thickness 1mm, card body are divided into two up and down; Two card bodies are just the same, and there is equidistant diameter 2mm through hole on the both sides of card body, and its distance is the diameter 10mm of annulus; Screw thread is arranged in the through hole; The card body has circular draw-in groove (shallow ridges), and circular draw-in groove diameter is 10mm, draw-in groove degree of depth 0.95mm; Screw screws in card body through hole makes annulus fastening; The suspension member of physical pendulum is stainless steel or the high hardness aluminium alloy right cylinder of diameter 3mm.