CN2519290Y

CN2519290Y - Injection device of self press type static contact search apparatus

Info

Publication number: CN2519290Y
Application number: CN 01232906
Authority: CN
Inventors: 梁军
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-05-23
Filing date: 2001-08-07
Publication date: 2002-10-30
Anticipated expiration: 2011-08-07

Abstract

An injecting device for self-pressure static penetrometers belongs to the technical field of engineering geological investigation devices. The technical problem which the injecting device aims at solving is to provide a device which can be combined with a sensor and electronic measuring instruments to form a static penetrometer to be used in examining troughs and engineering geographical investigations and accurately measuring physical-mechanical properties of grounds. The injecting device comprises a probe rod and a probe unit, wherein, an upper part of the probe rod is connected with a rotating mechanism while a lower end of the probe rod and the probe unit are connected through a bearing; helical bands are positioned on the surface of the external periphery of the lower part of the probe rod; the probe unit is compressed into the earth by the downward pressure produced by the rotation of the helical bands driven by the probe rod. The injecting device not only can get rid of the malady of more artificial influence factors to the present examining trough devices and lower measuring accuracy, but also can eliminate the disadvantages of large volume and high cost of present static penetrating devices and the injecting device can also be arranged on drilling rigs of engineering geographical investigations with rotating mechanisms.

Description

The perforation device of self-pressing type static penetrometer

Technical field

The utility model relates to a kind of perforation device of the device of testing the foundation soil physico-mechanical properties, especially static penetrometer, belongs to the engineering geological investigation equipment technical field.

Background technology

In the check of foundation subsoil and engineering geological investigation before building operation, generally need the physico-mechanical properties of in-situ test foundation soil.Its concrete grammar is, utilizes external force with conical probe gradually in the foundation soil of injection certain depth, and the penetration resistance of popping one's head in during each depth location of survey record is determined the physico-mechanical properties of foundation soil again according to the penetration resistance of each depth point.

At present, the check of foundation subsoil before the building operation, the dynamic sounding method that generally adopts artificial pricker to visit, the perforation device of its probe is made up of probe, feeler lever and punching hammer.During feeler inspection, the punching hammer is carried to certain altitude, utilized its free-falling gravity to impact feeler lever then, in the probe injection foundation soil with the feeler lever lower end, judge the physico-mechanical properties of foundation soil according to the knocking number of unit depth of penetration with manpower.The manual facility of this kind, injection pressure are artificial dynamic pressure, have the disadvantage that penetrating power is inhomogeneous, the measurement data error is big inevitably, simultaneously, also have defectives such as labour intensity is big, inefficiency; In the existing engineering geological investigation, the methods of static sounding that adopt are carried out in-situ test more, probe is pressed into counter-force required in the foundation soil, generally the deadweight by many earth anchors or load-carrying vehicle provides, the pressue device of its injection equipment generally adopts hydrostatic transmission or hand chain structure, thereby equipment needed thereby is bigger, the cost height, installation, complicated operation use extremely inconvenient.Along with the raising day by day of in-situ test importance in the engineering geological investigation, it is also more necessary to overcome the existing above-mentioned defective of feeler inspection injection equipment.

Summary of the invention

Technical problem to be solved in the utility model provides a kind of perforation device of self-pressing type static penetrometer, make it and sensor and the combination of electron measuring instrument, be made into static penetrometer, accurately test the ground physico-mechanical properties, reduce equipment volume, the convenient use increased work efficiency, and overcomes the shortcoming that exists in the above-mentioned prior art.

The technical solution of the utility model is:

A kind of perforation device of self-pressing type static penetrometer comprises feeler lever, probe, and its improvements are, the top of feeler lever is connected with rotating mechanism, is connected by bearing between lower end and the probe, and feeler lever bottom external peripheral surface is provided with hurricane band.

The perforation device of above-mentioned self-pressing type static penetrometer, described feeler lever can be multi-segment structure, and the end of adjacent two sections feeler levers is that keyway or drift bolt connect;

The perforation device of above-mentioned self-pressing type static penetrometer, described bearing jointing structure is, thin ends and thick middle reducing hole is established in the feeler lever lower end, thin ends and thick middle multidiameter shaft is established in the probe upper end, the corresponding ball slideway that forms in the two position, reducing position, plurality of balls is installed in the ball slideway, and the reducing axis hole of feeler lever lower end is formed by cover in the insert in the gross porosity.

The utility model can be pressed into probe in the soil by the downward pressure that rotation produced that feeler lever drives helical blade, with sensor and the combination of electron measuring instrument, can be made into rotation self-pressing type check of foundation subsoil instrument or rotation self-pressing type static penetrometer, carry out the in-situ test of various foundation soil physico-mechanical propertieses.Both can abandon existing check of foundation subsoil facility injection pressure is that artificial dynamic pressure, artifical influence factor are big, measuring accuracy is hanged down and reached disadvantages such as labour intensity is big, can remove shortcomings such as existing static sounding equipment volume is big, cost height again from, simultaneously, can be installed on the engineering geological investigation rig of taking back rotation mechanism, have simple in structurely, equipment volume is little, and cost is low, easy to operate, advantages such as applied range.

Description of drawings

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is feeler lever and probe bearing jointing structure enlarged diagram;

Fig. 3 is applied to rotate the structural representation of self-pressing type check of foundation subsoil instrument embodiment for the utility model;

Fig. 4 is the probe zoomed-in view;

Embodiment

Consult Fig. 1, rotating mechanism 5 in the utility model is the conical gear rotating mechanism, conical gear 6 can be connected with drive of motor among the figure, also can be connected manually moving operation with hand crank, certainly, also can adopt other various rotating mechanisms such as worm and gear, sprocket wheel, belt pulley, can be in line with satisfying the principle apolegamy that functions of use requires, also conveniently uses; Being in transmission connection in feeler lever 1 and the rotating mechanism between the swiveling wheel can be adopted the socket connection structure of six sides or square axis hole, also can adopt syndetons such as spline axis hole, is that the grafting of six square shaft holes is in transmission connection in the diagram; The lower end of feeler lever 1 can be connected by various bearings between 2 with probe, as rolling bearing, sliding bearing etc., should select the rolling bearing of the certain axial bearing capacity of tool for use, as taper roll bearing.Bearing can be selected standard rolling bearing for use, also can design bearing arrangement voluntarily.Visual concrete request for utilizations such as the width of feeler lever 1 bottom external peripheral surface hurricane band 3, thickness, pitch are determined.

Consult Fig. 2, provided a kind of feeler lever of design voluntarily and the bearing jointing structure of probe among the figure.Among the figure, the upper end of the bottom of feeler lever 1 and probe 2 is established thin ends and thick middle reducing hole or axle respectively, the step ring or the shaft shoulder are formed in the reducing position of hole or axle, and the corresponding formation ball slideway in the two position is installed the bearing of plurality of balls between just forming feeler lever and popping one's head within it.This kind bearing arrangement can save the interior overcoat of bearing, thereby the radial structure size that can dwindle bearing greatly, and the function of tool carrying axial force, very suitablely adopts on the shaft of feeler lever class minor diameter.Among the figure, for satisfying the assembly technology requirement, the reducing hole of feeler lever lower end is formed by cover 7 in the insert in the particle size hole, for cover 7 slippages in preventing, also is provided with holding screw 8.The multidiameter shaft of probe 2 and its upper end can adopt integral body or divide body structure, for dividing body structure, passes through six square bar hole socket connections between the two in the diagram.

Consult Fig. 3, be illustrated as the utility model and be used to rotate self-pressing type check of foundation subsoil instrument embodiment.Among the figure, rotating mechanism 5 is fixedly mounted on the frame 9, consider probe 2 static pressure when injection just less (because hurricane band part screw-in length is not enough), can above feeler lever, place the pressing plate shown in the double dot dash line 10 among the figure, the masthead face of pressing plate 10 bottom surfaces and feeler lever adopts the way of contact top and center hole, when pressing plate is implemented downward acting force, do not influence the rotation of feeler lever self by weight or manpower, can assist the initial stage injection of popping one's head in.

Still consult Fig. 3, when figure mid frame 9 being replaced into engineering investigation rig, feeler lever when adopting the long feeler lever that multistage connects to form, the utility model just becomes and the matching used static penetrometer embodiment of rig.At this moment, rotating mechanism can directly adopt the rotating mechanism of rig, can utilize rig to implement the operation of various Geological Engineering static sounding easily.

Referring to Fig. 6, in the diagram probe zoomed-in view, resistance strain gage 20 in the probe 2 and sensor 21 can transfer to data acquisition unit by cable 28 with the penetration resistance signal of probe induction and carry out automatic record, and 27 is fore-set among the figure.

Claims

1. the perforation device of a self-pressing type static penetrometer, comprise feeler lever (1), probe (2), it is characterized in that the top of feeler lever (1) is connected with rotating mechanism (5), be connected by bearing (4) between lower end and the probe (2), feeler lever (1) bottom external peripheral surface is provided with hurricane band (3).

2. according to the perforation device of the described rotation self-pressing type static penetrometer of claim 1, it is characterized in that described feeler lever (1) is a multi-segment structure, the end of adjacent two sections feeler levers is that keyway or drift bolt connect.

3. according to the perforation device of claim 1 or 2 described self-pressing type static penetrometers, it is characterized in that, described bearing jointing structure is, thin ends and thick middle reducing hole is established in feeler lever (1) lower end, thin ends and thick middle multidiameter shaft is established in probe (2) upper end, the corresponding ball slideway that forms in the two position, reducing position is installed plurality of balls in the ball slideway, the reducing axis hole of feeler lever lower end is formed by cover [7] in the insert in the gross porosity.