CN2650113Y

CN2650113Y - Concret core sample end face levelling-up instrument

Info

Publication number: CN2650113Y
Application number: CN 200320106142
Authority: CN
Inventors: 崔士起; 张新华; 孔旭文; 车光临
Original assignee: Shandong Provincial Academy of Building Research
Current assignee: Shandong Provincial Academy of Building Research
Priority date: 2003-10-10
Filing date: 2003-10-10
Publication date: 2004-10-20
Anticipated expiration: 2013-10-10

Abstract

The utility model is an end face leveling meter of concrete core sample for building test process, which comprises a base plate and poles arranged on the base plate, the utility model has the technical scheme that: the base plate is provided with a variable interval positioning mechanism, the pole has an upper holddown plate moving up and down. The utility model can ensure the uprightness and flatness of core sample after being leveled, ensure both end faces in parallel, improve the core sample leveling efficiency, solve the problem of uneasy to control the flatness and uprightness of high strength and small diameter concrete core sample after leveled, and improve the accuracy of concrete strength tested through the core drilling method.

Description

The concrete core sample end face is mended flat instrument

Technical field

The utility model is mended flat instrument for the concrete core sample end face that uses in the building test process.

Background technology

At building field, sometimes need to detect the compressive strength of concrete building structures or member, core drilling method is to drill through concrete core sample at xoncrete structure or component partial, concrete core sample is processed into standard cylinder, detect the concrete core sample cylindrical compressive strength, and according to concrete core sample cylindrical compressive strength structural or concrete members compressive strength.For ease of detect the core that drills through need be mended flat, present core end face mend paperback put by the chassis, have tooth bar column, be installed on anchor clamps on the column and the anchor clamps with column on the tooth bar meshed gears form.The verticality, flatness that this device can not guarantee to mend flat back core with and the parallel degree of both ends of the surface, have a strong impact on the accuracy that core drilling method detects concrete strength.

Summary of the invention

The purpose of this utility model is: design and a kind ofly can guarantee to mend flat flatness, verticality, raising core and mend the concrete core sample end face of flat efficient and mend flat instrument.

The utility model comprises base plate and the column that is installed on the base plate, and its technical scheme is: the spacing adjustable positioning mechanism is installed on the base plate, the top board that can move up and down is installed on the column.This structure of the present utility model is placed on core on the base plate, can not cause the inclination of column, and therefore, its verticality and flatness are convenient to grasp, thereby is easy to reach the flat purpose of benefit, and, owing to be convenient to place, install, can also improve and mend flat efficient.

The governor motion of top board can adopt following structure in the utility model: column and the thick pillar that can move along column is installed, the countershaft that is connected with top board, have tooth bar is housed on the thick pillar, and being loaded on has on the control crank on the thick pillar and the tooth bar meshed gears.In addition, for making things convenient for control crank, the torsion spring that cooperates with thick pillar is housed on the control crank axle implementing to mend flat back return.

Detent mechanism of the present utility model is designed to be installed in two the relative folder mouths on the base plate, and the Jia Kou bottom is connected on two guide plates that connect by screw rod; The groove that adapts with two folder mouthful direction of motion is arranged on the base plate.Be handled easily, the one or both ends of screw rod all can be equipped with knob.

In addition, be fixed on the column for making thick pillar, the bottom of the leghole rear side on the thick pillar has slotted hole, and fastening screw one end that passes the thick pillar rear portion has fastening handle.Perhaps have internal thread on the thick pillar, the external thread engagement on it and the main shaft.Dual mode also can be used in combination.

Description of drawings

Fig. 1 is the stereographic map of the utility model embodiment;

Fig. 2 is the structural drawing of folder mouthful control section in the present embodiment;

Fig. 3 is the structural drawing of top board and countershaft;

Fig. 4 is the inner structure synoptic diagram of thick pillar;

Wherein, 1, handwheel, 2, control crank, 3, main shaft, 4, countershaft, 5, thick pillar, 6, fastening handle, 7, top board, 8, Jia Kou, 9, base plate, 10, knob, 11,12, guide plate, 13, screw rod, 14, tooth bar, 15, torsion spring, 16, gear.

Embodiment

As shown in the figure, present embodiment comprises that respectively there is a groove both sides of base plate 9, base plate 9, and has a folder mouth 8 corresponding with groove respectively, and there is the screw rod 13 that connects two guide plates 11,12 below of base plate 9, one end of screw rod 13 has knob 10, two folder mouths 8 and is separately fixed on two guide plates 11,12.At the rear side dress column of base plate 9, the main shaft 3 of upper end band handwheel 1 is housed in the column, be threaded on the main shaft 3.Tapped spindle hole is arranged on the thick pillar 5, split shed under the rear side in this hole, and the both sides that have fastening handle 6 to pass thick pillar 5 openings connect.The screw thread in thick pillar 5 spindle holes and the screw-threaded engagement of main shaft 3.By axle control crank 2 is housed on the thick pillar 5, gear 16 is housed on this axle, and the torsion spring 15 that cooperates with thick pillar is arranged.Be installed in countershafts 4 in the thick pillar 5 by tooth bar 14 and gear 16 engagements by vertical hole, the top board 7 corresponding with base plate 9 is fixed on the lower end of countershaft 4.

During operation, wait to mend the core two ends and evenly be coated with one deck and mend flat material, the pad upper glass plates is placed between the folder of two on the base plate 9 mouthful.Rotary knob 10 makes two folder mouths 8 to intermediary movements, clamps core, makes the core side vertical with base plate.Press control crank 2 downwards, top board 7 moves downward with countershaft 4, compresses core, makes the core both ends of the surface parallel, keeps 1-3 minute, waits to mend flat material densification in fact, unclamps control crank 2, and top board 7 moves upward with countershaft 4, sets back.Rotary knob 10 makes two to press from both sides mouth 8 to the both sides motion, unclamps core, and core and glass backing plate is interior to go out from folder mouth 8 together, is placed on the maintenance of steady place.

The utility model can guarantee to mend verticality, the flatness of flat back core, the assurance both ends of the surface are parallel, improve the flat efficient of benefit of core, overcome high strength and minor diameter concrete core sample and mended flat back flatness, the uppity difficulty of verticality, improve the accuracy that core drilling method detects concrete strength.

Claims

1, a kind of concrete core sample end face is mended flat instrument, comprises base plate [9] and is installed in column on the base plate [9], and it is characterized in that: base plate is equipped with the spacing adjustable positioning mechanism on [9], and the top board [7] that can move up and down is installed on the column.

2, concrete core sample end face according to claim 1 is mended flat instrument, it is characterized in that: column and the thick pillar [5] that can move along column is installed, be equipped with on the thick pillar [5] and top board [7] countershaft that be connected, that have tooth bar [4], being loaded on has on the control crank [2] on the thick pillar [5] and tooth bar [14] meshed gears [16].

3, concrete core sample end face according to claim 2 is mended flat instrument, it is characterized in that: the torsion spring [15] that cooperates with thick pillar [5] is housed on control crank [2] axle.

4, mend flat instrument according to claim 1 or 2 or 3 described concrete core sample end faces, it is characterized in that: described detent mechanism is for being installed in relative two folders mouthful [8] on the base plate [9], and folder mouthful [8] bottom connects respectively on two guide plates [11,12] that connect by screw rod [13]; The groove that adapts with two folder mouthful [8] direction of motion is arranged on the base plate [9].

5, concrete core sample end face according to claim 4 is mended flat instrument, it is characterized in that: an end of screw rod [13] is equipped with knob [10].

6, mend flat instrument according to claim 2 or 3 described concrete core sample end faces, it is characterized in that: the bottom of the leghole rear side on the thick pillar [5] has slotted hole, fastening screw one end that passes thick pillar [5] rear portion have fastening handle [.

7, mend flat instrument according to claim 2 or 3 described concrete core sample end faces, it is characterized in that: thick pillar has internal thread on [5], it and the external thread engagement that is loaded on the main shaft [3] on the column.