CN106018137B

CN106018137B - Juvenile stage concrete bearing intension testing instrument

Info

Publication number: CN106018137B
Application number: CN201610455357.8A
Authority: CN
Inventors: 周敏; 黄金荣; 赖泽成; 张琨健; 徐秀华; 黄欢; 林美
Original assignee: Fujian Academy Of Architectural Sciences Co Ltd; FUJIAN BUILDING ENGINEERING QUALITY INSPECTION CENTER Co Ltd
Current assignee: Fujian Academy of Architectural Sciences Co., Ltd.; FUJIAN BUILDING ENGINEERING QUALITY INSPECTION CENTER CO., LTD.
Priority date: 2016-06-21
Filing date: 2016-06-21
Publication date: 2019-05-17
Anticipated expiration: 2036-06-21
Also published as: CN106018137A

Abstract

A kind of juvenile stage concrete bearing intension testing instrument, including shell, front sleeve, mobile jib, the first spring, pull rod, after sleeve, stylus and bullet put button；The lower part of the shell is inserted in front sleeve；The mobile jib includes a thick bar, a thin bar and a convex shoulder；The thin bar stretches out the front sleeve；The thick bar vertically passes through shell；First spring pocket is set in thick bar, and the lower end of first spring is stuck on the convex shoulder；The after sleeve is sheathed on the top of shell, and the pull rod stretches out after sleeve, and the thick bar can move up and down setting relative to after sleeve；The tail portion of the stylus is inserted in the bottom end of thin bar, and the stylus is flexibly connected with thin bar；The bullet puts button and is rotatably fixed on housing exterior walls, and when in running order, the convex shoulder is moved away from or is arranged in front sleeve inner bottom surface, and bullet puts button and catches on the first spring.The present invention can be used for the juvenile stage intensity of Practical Project on-the-spot test concrete, easy to operate, and it is high to survey strong precision.

Description

Juvenile stage concrete bearing intension testing instrument

Technical field

Present invention relates particularly to a kind of juvenile stage concrete bearing intension testing instruments.

Background technique

Traditional juvenile stage strength test method uses intensity test in laboratory, by virtue of experience differentiates, indentation method, at All there are some defects in ripe degree method, rebound method, penetration type concrete strength-measuring method, hubbing etc., but these methods, such as indoor anti- Compressive Strength method needs large-scale press machine, and needs to carry out indoors, can not operate at the scene, empirical method and impression rule can not Quantization, accuracy is not high, and hubbing needs are planned in advance, and pre-buried accessory, belongs to micro- destructive test, and springs back and pass through Enter formula concrete strength-measuring method mainly for regular tenacity and high-intensitive concrete, especially at present most commonly used 1000N and The penetration type strength testing device of 800N is since injection force value is too big, and stroke is only 20mm, the juvenile stage concrete extremely low for intensity, Root can not establish good correlation, and data discrete deviation is very big, and the strong instrument in penetration type side of these high force value needs specially The augmenting wrench of door, use are extremely inconvenient.

Summary of the invention

The technical problem to be solved in the present invention is to provide a kind of juvenile stage concrete bearing intension testing instrument.

The present invention is implemented as follows: a kind of juvenile stage concrete bearing intension testing instrument, including shell, front sleeve, mobile jib, First spring, pull rod, after sleeve, stylus and bullet put button；The lower part of the shell is inserted in front sleeve；The mobile jib includes The thick bar and a thin bar being arranged from top to bottom, are connected with a convex shoulder between the thin bar and thick bar；Described in the thin bar is stretched out Front sleeve；The thick bar vertically passes through shell, and the thick bar can move up and down setting with respect to shell；First spring pocket is set to In thick bar, and the lower end of first spring is stuck on the convex shoulder, and upper end is stuck in after sleeve inner wall；The pull rod integrally connects It ties in the rear end of thick bar；The after sleeve is sheathed on the top of shell, and the pull rod stretches out after sleeve, and the thick bar can phase Setting is moved up and down for after sleeve；The tail portion of the stylus is inserted in the bottom end of thin bar, and the stylus is flexibly connected with thin bar； The bullet puts button and is rotatably fixed on housing exterior walls, and when in running order, the convex shoulder is moved away from or is arranged in Front sleeve inner bottom surface, bullet put button and catch on the first spring.

Further, it includes that a second spring and a hook crank, the second spring are fixed on hook that the bullet, which puts button, Between the lower end and shell of shape crank；It is articulated on shell in the middle part of the hook crank, and the upper end of the hook crank is caught on First spring.

Further, the bottom end of the front sleeve extends downwardly, and forms a bracket, and the bottom end of the thin bar is equal to or slightly higher In the bottom surface of bracket.

Further, the upper and lower part of the housing exterior walls is respectively equipped with a plurality of first screw threads, the front sleeve and The inner wall of after sleeve is respectively equipped with a plurality of second screw threads, and front sleeve and after sleeve pass through first screw thread, second respectively Screw thread and shell rotation connect.

The present invention has the advantages that can be used for the juvenile stage intensity of Practical Project on-the-spot test concrete, there is operation letter It is single, survey strong advantage with high accuracy.

Detailed description of the invention

The present invention is further illustrated in conjunction with the embodiments with reference to the accompanying drawings.

Fig. 1 is the structural schematic diagram of juvenile stage concrete bearing intension testing instrument of the present invention.

Fig. 2 is the intensity of concrete in the present invention.

Specific embodiment

Refering to Figure 1, a kind of juvenile stage concrete bearing intension testing instrument 100, including shell 1, front sleeve 2, rear enclosure Cylinder 3, mobile jib 4, the first spring 5, pull rod 6, stylus 7 and bullet put button 8；

The mobile jib 4 includes the thick bar 41 and a thin bar 42 being arranged from top to bottom, between the thin bar 42 and thick bar 41 It is connected with a convex shoulder 43；The thin bar 42 stretches out the front sleeve 2, and the bottom end of the thin bar 42 be equal to or slightly higher than it is described below The bottom surface of bracket 21；When in running order, the convex shoulder 43 is moved away from or is arranged in 2 inner bottom surface of front sleeve；The thick bar 41 Shell 1 is vertically passed through, and the thick bar 41 can move up and down setting with respect to shell 1；First spring 5 is sheathed in thick bar 41, And the lower end of first spring 5 is stuck on the convex shoulder 43, upper end is stuck in 3 inner wall of after sleeve；The 6 one connection of pull rod In the rear end of thick bar 41；

Referring again to Fig. 1, the lower part of the shell 1 is inserted in front sleeve 2, and the bottom end of the front sleeve 2 extends downwardly, Form a bracket 21；The after sleeve 3 is sheathed on the top of shell 1, and the pull rod 6 stretches out after sleeve 3, and the thick bar 41 can Setting is moved up and down relative to after sleeve 3.The upper and lower part of 1 outer wall of shell is respectively equipped with a plurality of first screw threads 11, The front sleeve 2 and the inner wall of after sleeve 3 are respectively equipped with a plurality of second screw thread A, and front sleeve 2 and after sleeve 3 pass through respectively First screw thread 11, the second screw thread A and the rotation of shell 1 connect.

Referring again to Fig. 1, the tail portion of the stylus 7 is inserted in the bottom end of thin bar 42, and the stylus 7 and 42 activity of thin bar are even It connects；The bullet puts button 8 and is rotatably fixed on 1 outer wall of shell, and when in running order, bullet puts button 8 and catches on One spring 5.It includes a second spring 81 and a hook crank 82 that the bullet, which puts button 8, and the second spring 81 is fixed on hook Between the lower end and shell 1 of crank 82；The middle part of the hook crank 82 is articulated on shell 1, and the hook crank 82 is upper Catch on the first spring 5 in end.

Referring again to Fig. 1, wherein each preferred size of component is as follows:

First spring 5: length 150mm, outer diameter 24.5mm, line footpath 1.8mm, stiffness factor K are 1250N/m.

Stylus 7: total length 30.5mm, 45 ° of needle point cone angle, active length 20mm, the clamping length in thin bar 42 10.5mm。

Mobile jib 4: the length 80mm of length 240mm, thin bar 42 and convex shoulder 43,42 diameter 10mm of thin bar, 41 length of thick bar 160mm, diameter 18mm.

Front sleeve 2: long 35mm, bracket 21: long 65mm.

After sleeve 3: overall length 30mm.

Driving stroke: 80mm.

Penetrating power: 100N.

Stylus 7 is packed into 42 front end of thin bar when applying when the invention works referring again to Fig. 1, pulls pull rod 6 backward, the One spring 5 is stuck in 3 inner wall of after sleeve, and when 5 reduction length of the first spring is 80mm, the hook crank 82 that bullet puts button 8 can block The bracket 21 is abutted against concrete topping at this time by firmly the first spring 5, presses hook crank 82, the first spring 5 and mobile jib 4, Stylus 7 moves down, and when the convex shoulder 43 is blocked by front sleeve 2, stylus 7 is then in penetration concrete, since stroke is long, power It is worth small, low for intensity juvenile stage concrete, depth of penetration is generally in 20%~80% range of active length, i.e. resistance to compression Intensity is corresponding in 0.5MPa~3MPa, then measures the depth of penetration concrete surface layer, and it is corresponding to read intensity curve (see Fig. 2) Intensity value, or calculated according to formula y=94.17x-2.48, it can be learnt that the age concrete intensity.

Claims

1. a kind of juvenile stage concrete bearing intension testing instrument, it is characterised in that: including shell, front sleeve, mobile jib, the first spring, Pull rod, after sleeve, stylus and bullet put button；The lower part of the shell is inserted in front sleeve；The mobile jib includes from top to bottom The thick bar and a thin bar being arranged, are connected with a convex shoulder between the thin bar and thick bar；The thin bar stretches out the front sleeve；Institute It states thick bar and vertically passes through shell, and the thick bar can move up and down setting with respect to shell；First spring pocket is set in thick bar, and The lower end of first spring is stuck on the convex shoulder, and upper end is stuck in after sleeve inner wall；The pull rod is integrally linked to thick bar Rear end；The after sleeve is sheathed on the top of shell, and the pull rod stretches out after sleeve, and the thick bar can be relative to rear enclosure Cylinder moves up and down setting；The tail portion of the stylus is inserted in the bottom end of thin bar, and the stylus is flexibly connected with thin bar；The bullet is put Button is rotatably fixed on housing exterior walls, and when in running order, the convex shoulder is moved away from or is arranged in front sleeve Bottom surface, bullet put button and catch on the first spring.

2. juvenile stage concrete bearing intension testing instrument as described in claim 1, it is characterised in that: it includes one that the bullet, which puts button, Second spring and a hook crank, the second spring are fixed between the lower end and shell of hook crank；The hook crank Middle part be articulated on shell, and the first spring is caught in the upper end of the hook crank.

3. juvenile stage concrete bearing intension testing instrument as described in claim 1, it is characterised in that: the bottom end of the front sleeve to Lower extension forms a bracket, and the bottom end of the thin bar is equal to or slightly higher than the bottom surface of bracket.

4. juvenile stage concrete bearing intension testing instrument as described in claim 1, it is characterised in that: the top of the housing exterior walls A plurality of first screw threads are respectively equipped with lower part, the inner wall of the front sleeve and after sleeve is respectively equipped with a plurality of second screw threads, And front sleeve and after sleeve pass through first screw thread, the second screw thread and shell rotation respectively and connect.