CN2580428Y

CN2580428Y - Mechanical force sensor

Info

Publication number: CN2580428Y
Application number: CN 02281281
Authority: CN
Inventors: 郭群
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-11-22
Filing date: 2002-11-22
Publication date: 2003-10-15
Anticipated expiration: 2012-11-22

Abstract

The utility model relates to a mechanical force measuring device, particularly a mechanical force sensor. The utility model is composed of a cylinder body, a push rod, a liquid medium layer and a manometer, wherein, elastic spacers are arranged between the push rod and the liquid medium layer. The utility model has the advantages of small size, small axial displacement, large transferring range of mechanical force, small attrition of transferring force, high precision, easy manufacture and production, low cost, etc. Therefore, the utility model is a core component of the mechanical force measuring device and is also a preferred mating part of various weighing scales, tensiometers, tension measuring devices, etc.

Description

The mechanical force sensing device

Technical field

The utility model relates to a kind of mechanical force surveying instrument, particularly mechanical force sensing device.Being the core component of mechanical force surveying instrument, also is first-selected matching component such as all kinds of weight scale, tautness meter and tension measuring device.

Background technology

Mechanical force sensing device in the past has two kinds of versions of leather cup formula and plunger type usually.The former is made up of cylinder body, push rod, leather cup, liquid medium and pressure transducer.It is big that it in use exposes axial displacement, only is applicable to the test of interior mechanical force, makes its usable range be subjected to certain limitation, and volume takes up room many greatly simultaneously; Another kind of plunger type mechanical force sensing device comprises cylinder body, plunger, liquid medium and tensimeter.Though the scope of test mechanical power compares broad, but because matching surface precision prescribed height, the processing technology of its cylinder body and plunger are strict, cause cost height, sealing property relatively poor, the mechanical force loss of transmitting is bigger, many unsatisfactory parts such as measuring accuracy is relatively low await further overcoming.

Summary of the invention

The purpose of this utility model is to provide that a kind of volume is little, axial displacement is little, transmits the wide ranges of mechanical force, and it is little to transmit the power loss simultaneously, precision height, good seal performance, and processing and manufacturing simultaneously is easy, reduces cost; The mechanical force sensing device that range of application is bigger.

The technical scheme of the utility model technical solution problem is: it is made up of cylinder body, push rod, liquid medium layer and tensimeter, is provided with resilient spacer between its described push rod and the liquid medium layer.

The surface area of the front end face of described push rod is made the surface area less than resilient spacer.

The edge of described resilient spacer is circular arc.

The utility model compared with prior art, owing between push rod and liquid medium layer, be provided with resilient spacer, its edge is circular arc, and surface area is greater than a series of technical measures such as surface area of push rod end contacted with it, and axially displacement is little after evidence has push rod stressed, and the loss of transmission power is few, sensitive error is little, advantages such as the scope of application of the precision height and the power of transmission is big, volume is little simultaneously, processing and manufacturing is easy, reduces cost.Because good seal performance is saved liquid medium.

Description of drawings

Fig. 1 is a main TV structure synoptic diagram of the present utility model.

Fig. 2 is that the utility model replaces manometric embodiment with pressure transducer.

Embodiment

Embodiment of the present utility model is described in detail in conjunction with the accompanying drawings, cylinder body 1 is through the machining moulding with the mild carbon steel bar, the surface area of the front end face of push rod 3 is made the surface area less than resilient spacer 4, tensimeter 5 is loaded on the lower end of cylinder body 1, liquid medium layer 2 is packed in the cylinder body 1, packs into successively by resilient spacer 4, the push rod 3 that rubber is made, the edge is circular arc again.The surface area of the front end face of described push rod 3 is made the surface area less than resilient spacer 4, be beneficial to resilient spacer 4 like this and not only transmit mechanical force but also produce distortion when stressed, and the circular arc at edge rolls along the cylinder wall trace and keeps good sealing.That shown in Figure 2 is the utility model replaces tensimeter 5 with pressure transducer 6 embodiment.

The utility model uses basic identical with prior art, when push rod 3 is stressed, power is passed to resilient spacer 4, passes to liquid medium layer 2 in turn, by tensimeter 5 or pressure sensor pressure signal is offered display device again.

Claims

1, a kind of mechanical force sensing device is made up of cylinder body (1), push rod (3), liquid medium layer (2) and tensimeter (5), it is characterized in that being provided with resilient spacer (4) between described push rod (3) and the liquid medium layer (2).

2, sensing device according to claim 1, the surface area that it is characterized in that the front end face of described push rod (3) is made the surface area less than resilient spacer (4).

3, sensing device according to claim 1 is characterized in that the edge of described resilient spacer (4) is circular arc.