CN2149601Y

CN2149601Y - Internal clearance detecting instrument

Info

Publication number: CN2149601Y
Application number: CN 92240480
Authority: CN
Inventors: 张焕喜
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-12-17
Filing date: 1992-12-17
Publication date: 1993-12-15
Anticipated expiration: 2002-12-17

Abstract

The utility model discloses a differential action positioning internal clearance detecting instrument for a double-wedge measuring head. The internal clearance detecting instrument comprises two wedge measuring heads whose slope rates are different, more than two measuring rods, a measuring ruler and a measuring fixture block which are connected by a plurality of connecting fixture blocks, screws and spring pieces. The two measuring heads, the measuring rods and the measuring fixture blocks are clamped by the connecting fixture blocks and can oppositely move. The clearance measured is detected through the differential action positioning of the two wedge measuring heads. The measuring design of the measuring ruler and the measuring fixture blocks can adopt the measuring design technology of an electronic digital display caliper, or the measuring design technology of a reticle vernier caliper. The measuring rods, the measuring ruler and the wedge measuring heads can be disassembled to be stored or carried.

Description

Internal clearance detecting instrument

The utility model relates to instrument, particularly has the testing tool of the measuring ability in direct detection large-scale workpiece, device interior gap.

The internal clearance of some large-scale workpiece, equipment (, rotor clearance quiet as high capacity motor) is difficult to direct detection with general testing tool, must take the parts that some influence detects apart, just can detect, and is time-consuming.To be that design is a kind of needn't take the parts that some has the space to insert apart to task of the present utility model, directly the testing tool that the internal clearance of workpiece device is detected.

Task of the present utility model realizes as follows, two different wedge shape gauge heads of slope are connected with measurement blade and measurement fixture block respectively by sounding rod, wedge shape gauge head, sounding rod, measurement fixture block, dip stick can slide mobile under the clamping of connection fixture block mutually, utilize the direct measurement of the differential location realization of two wedge shape gauge heads to measured gap.

A most preferred embodiment of this utility model, as scheming:

Accompanying drawing 1-6 is the structural representation of this utility model;

Accompanying drawing 7 is detection principle schematic of this utility model;

Accompanying drawing 8 is work synoptic diagram of this utility model.

Structural representation of the present utility model is seen accompanying drawing 1-6: measurement is decided bar 1 and is connected fixture block 16 with wedge shape gauge head 2, measurement blade 3 usefulness, and screw 17 connects; The moving bar 5 of measurement connects fixture block 14 with wedge shape gauge head 6 usefulness, screw 15 connects, and measures moving bar 5 and connects with measurement fixture block 8 usefulness screws 7; Wedge

shape gauge head

2,6 slope differences, it is 2:1 that present embodiment is got its slope ratio; Measure moving bar 5 and be clamped in and connect fixture block 16 and measure that decide bar 1 middle, and can slide therein; Measure in the fixture block 8 and install and measure moving grid (digimatic calipers element, measure on the moving grid figure and do not draw), measure blade 3 fronts bonding measurement fixed grid 4(digimatic calipers element), present embodiment is measured design and is taked digimatic calipers to measure designing technique, of the present utility modelly measures design and also can take the groove vernier caliper to measure designing technique; LCDs 10, metric and English spiral are changed button 11, zeroing button 12 conjunction measuring moving grids are realized detecting indicating value and shown; Fastening bolt 9 can make measurement fixture block 8 be fixed on and measure on the blade 3; In the middle of measuring fixture block 8 and measuring blade 3 upper sides, spring leaf 13 is arranged, it is to guarantee to measure decide bar 1, measurement to move the downside of bar 5, wedge

shape gauge head

2,6 mobile on same reference field that spring leaf 18, the effect of

spring leaf

13,18 are arranged in the middle of measuring moving bar 5 upper sides and connecting fixture block 16; 19,20 is two zero correction datum lines on the wedge shape gauge head; Bar 1 is decided in the moving bar 5 of measurement, measurement can be divided into several joints (present embodiment is got 2 joints), connects with

connection fixture block

14,16,

screw

15,17 respectively.Each parts connects and is combined as integral body during use, but with after decomposition storage or carry.

Detection principle schematic of the present utility model is seen accompanying drawing 7; Two wedge shape gauge heads are △ ABC and △ ADE, wherein: BC=DE AE=2AC, i.e. BC/AC=2DE/AE.The AC limit of △ ABC overlaps with lower surface, gap 1, meet at C ' with its edge, the AE edge CA straight line that AB limit and 2 edges, upper surface, gap meet at B ' △ ADE moves on to A ', make 2 edges, cross gap upper surface, AD limit in B ', △ ADE moves the back and forms △ AB ' C ' and △ A ' B ' C ' for △ A ' D ' E ' in the middle of the gap.By similar △ principle as can be known: B ' C '/AC '=BC/AC, B ' C '/A ' C '=D ' E '/A ' E ', and BC=D ' E ' (DE), A ' E ' (AE)=2AC, so: B ' C '/A ' C '=BC/2AC, that is: B ' C '/AC '=2B ' C '/A ' C ', A ' C '=2AC ', so A ' A=AC '.Known by above analysis: the length A C ' that gauge head ABC inserts in the gap inserts the relative displacement S(S=AA ' that successively locate in the gap with two gauge heads) equate, that is: S=AC ' establishes gap width B ' C '=h, h/BC=AC '/AC then, h/BC=S/AC, be h=SBC/AC, according to design, BC/AC is a definite value, present embodiment gets 1/10, ∴ h=S/10.Like this, can directly mark on one's body by the gap size that measures at dip stick.

The work synoptic diagram of present embodiment is seen accompanying drawing 8: utilize the zero correction datum line on zeroing button 1 and the gauge head 3,5 (not draw on this figure of this line, can be with reference to the accompanying drawings 1), cubing is mixed up zero-bit, screw bolt 11, cubing gauge head portion is inserted the gap, in gauge head 3 downside contact gap lower surfaces 9, behind its location, 8 edges, upper side contact gap upper surface, unclamp bolt 11, hold blade 4, promote forward to measure fixture block 7 and sounding rod 6, make gauge head 5 continue to insert in the gap its upper and lower side and 8 limits, upper surface, gap

Claims

1, internal clearance, the differential location of a kind of double-wedge gauge head cubing, comprise two wedge shape gauge heads that slope is different, two above sounding rods, measure blade for one, a measurement fixture block and some connection fixture blocks, screw, spring leaf etc. connect to install and form, it is characterized in that: two wedge shape gauge heads, sounding rod, measurement fixture block are connecting under the fixture block clamping and can relatively move, utilize the differential location of two wedge shape gauge heads that measured gap is detected, but it is measured blade, sounding rod, wedge shape gauge head decomposition storage or carry.

2, internal clearance, the differential location of double-wedge gauge head as claimed in claim 1 cubing is characterized in that: sounding rod can adopt more piece to connect composition as required.