CN2223478Y

CN2223478Y - Surface roughness tester for rack

Info

Publication number: CN2223478Y
Application number: CN 94231725
Authority: CN
Inventors: 戚国庆
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-12-23
Filing date: 1994-12-23
Publication date: 1996-03-27
Anticipated expiration: 2004-12-23

Abstract

The utility model relates to a surface roughness tester for rock, which comprises a data acquisition and processing system and a driving system, wherein the data acquisition and processing system is composed of a rebound displacement sensor, an amplifier, an A/D transform plate and modules. The driving system comprises a motor, a reduction box, a screw rod, a slide block, a gauge head, etc. The slide block is matched with the screw rod through a screw thread. The gauge head arranged on the sensor is clamped on the slide block. When the motor drives the screw rod to rotate, the slide block is driven to operate, and the gauge head moves up and down along the rock surface. The device can conduct quantitative test for the surface roughness of the rock, and is fast in measuring speed and high in precision.

Description

The roughness of rock surface detector

The utility model relates to a kind of instrument that detects roughness of rock surface, is applicable to the field work in Geotechnical Engineering and the research thereof or roughness of rock surface is carried out quantitative measurement during laboratory study.

At present, the instrument that is used to measure roughness of rock surface both at home and abroad is mainly the apparatus that some obtain rock texture surface outline curves images." engineering geology journal " discloses a kind of simple and easy longitudinal profile instrument that is used to draw the rock structural face contour curve on 1994 the 2nd the 3rd phases of volume.This longitudinal profile instrument is made of the paintbrush of a plate and a hand-held band contact pilotage, and contact pilotage is vertical with paintbrush, and it is walked along body structure surface by contact pilotage, describes the body structure surface contour curve by paintbrush on the recording chart of chart board.This apparatus structure is simple, be applicable to that Barton straight flange method determines roughness coefficient JRC, but what it obtained only is contour curve, when needs are quantitatively determined roughness coefficient JRC with the judgement roughness of rock surface, also need the further datumization of curve, and owing to manual control contact pilotage is walked, be difficult to guarantee that paintbrush remains vertical with the picture version, thereby, not only use inconvenience, and can't guarantee measuring accuracy.

The purpose of this utility model be exactly a kind of measuring accuracy height of providing at the above-mentioned problems in the prior art, can be in Geotechnical Engineering field work or laboratory study in direct quantitative measure the roughness of rock surface coefficient, and then the instrument of definite roughness of rock surface.

Device of the present utility model contains data Collection ﹠ Processing System and drive system two parts are formed.Described data Collection ﹠ Processing System is made of back springing type displacement sensing sensor 1, amplifier 2, A/D change-over panel 3 and

module

4,1,2,3,4 are linked in sequence, wherein module 4 adopts single-chip microcomputer 12 to connect graphic lcd 13, the disc driver of storing data or audio cassette registering instrument 14, keyboard 15 constitutes, and module 4 also can directly adopt notebook computer.Described drive system contains the synchronous steady speed motor 5 of direct current, reducer casing 6, bearing 7, slide block 8, leading screw 9, guide rail 10, gauge head 11.Have gauge head 11 on the back springing type displacement transducer 1, be clamped on the slide block 8; The top of slide block 8 is threaded hole and leading screw 9 threads engaged that are bearing on the bearing 7, and a termination reducer casing 6 of 9 drives by motor 5; Guide rail 10 is fixed on the seat of bearing 7 and goes up and slide block 8 plane contact.

Above-mentioned data Collection ﹠ Processing System, drive system all adopt storage battery power supply.

Gauge head 11 is designed to the best when coniform, and the cone angle scope is at 60 °～90 °, and this shape helps gauge head and walks at rock surface.

The data testing result shows, does not find and the utlity model has at present the instrument of the detection roughness of rock surface of same structure, function as yet.

Compared with prior art, the utlity model has following advantage:

1, can make the digitizing of rock surface contour curve, and have higher measuring accuracy.

2, can determine its size by quantitative calculation method to roughness of rock surface coefficient JRC, and then judge the degree of roughness of rock surface that speed is fast, save time.

3, the instrument manufacturing is simple, data acquisition and processing robotization fiduciary level height.

Below in conjunction with drawings and Examples the utility model is described in further detail.

Fig. 1 is the utility model data Collection ﹠ Processing System structural nexus figure

Fig. 2 is to the structural drawing of module 4 when adopting single-chip microcomputer

Fig. 3 is the utility model driving system structure synoptic diagram

Description of drawings and type selecting are as follows:

1---the back springing type displacement transducer, select the differential transformer type of WYDC direct current supply for use, range 20mm, precision 0.3%;

2---amplifier, select the AD521 type for use;

3---the A/D change-over panel, select 8 moduluses for use;

4---module, adopt MCS-51 type single-chip microcomputer 12 to connect the keypad 15 of soft driver 14,32 keys of 13,3.5 cun of EDM12032 type drawing LCD;

5---the synchronous speed stabilizing micromotor of direct current, select BFG series DC sound-track engraving apparatus steady speed motor for use;

6---reducer casing, select common involute planet gear speed reduction unit for use;

7---bearing, select 1000096 single-row radial ball bearings for use;

8---slide block, top have the threads of lead screw hole of φ 10mm, match with leading screw;

9---leading screw, adopt triangle thread, pitch 1mm, maximum outside diameter 10mm, single track, helical pitch 1mm.

10---guide rail is fixed on the bearing seat, with slide block 8 plane contact;

11---gauge head, its gauge head cone angle is selected 90 ° for use, conehead diameter 0.05mm.

In the use, direct current speed stabilizing micromotor 5 drives leading screw 9 by reducer casing 6 and rotates with certain speed, thereby promote slide block 8 along guide rail 10 uniform motion, so the back springing type displacement transducer gauge head 11 that is clamped on the slide block 8 moves up and down along rock surface, the displacement signal that sensor 1 produces is amplified by amplifier 2, by the A/D analog to digital conversion, gather, handle by module 4 again.Quantitative calculation method according to determining roughness of rock surface coefficient JRC both at home and abroad at present draws corresponding JRC value.

Claims

1, a kind of roughness of rock surface detector contains data Collection ﹠ Processing System, drive system two parts, it is characterized in that:

Described data Collection ﹠ Processing System is made of back springing type displacement transducer (1), amplifier (2), A/D change-over panel (3), module (4), (1), (2), (3), (4) are linked in sequence, wherein module (4) adopts single-chip microcomputer (12) to connect the disc driver of graphic lcd (13), storage data or audio cassette registering instrument (14), keyboard (15) constitutes.

Described drive system is made of the synchronous speed stabilizing micromotor of direct current (5), reducer casing (6), bearing (7), slide block (8), leading screw (9), guide rail (10), gauge head (11), having gauge head (11) on the displacement transducer (1) is clamped on the slide block (8), leading screw (9) is by bearing (7) supporting and slide block (8) threaded engagement, (9) a termination reducer casing (6) is driven by motor (5), and guide rail (10) is fixed on the seat of bearing (7) and goes up and slide block (8) plane contact.

2, roughness of rock surface detector as claimed in claim 1 is characterized in that described single-chip microcomputer (12) is MCS-1 single-chip microcomputer.

3, roughness of rock surface detector as claimed in claim 1 is characterized in that described gauge head (11) for conical, and cone angle is 60 ° of-90 ° of scopes.

4, roughness of rock surface detector as claimed in claim 1 is characterized in that described module (4) is notebook computer.