CN208860851U - A kind of concrete creep deformation measuring device fixing device - Google Patents

Abstract

The utility model discloses a fixing device for a concrete deformation measuring gauge, comprising an upper clamping sleeve, a lower clamping sleeve, a deformation measuring gauge and a touch rod, wherein the upper clamping sleeve and the lower clamping sleeve are provided with outwardly convex The measuring system holder, the deformation measuring gauge is arranged in the measuring system holder of the upper clamping sleeve, the touch rod is arranged in the measuring system holder of the lower clamping sleeve, the touch rod is in contact with the deformation measuring gauge, and the measuring system holder includes A through hole, a sleeve, and a fixing bolt that penetrates the side wall of the through hole in the direction of the through hole and abuts on the sleeve are arranged on the clamping sleeve. The deformation measuring gauge extends into the upper sleeve of the upper clamping sleeve and passes through the fixing bolt. To fix, the contact rod extends into the upper sleeve of the lower clamping sleeve and is fixed by fixing bolts, and the deformation measuring gauge abuts the top of the contact rod to measure the concrete creep. The concrete creep deformation measuring meter fixing device proposed by the utility model can conveniently measure the deformation of any measuring point of the concrete specimen, and can avoid damage to the concrete specimen at the same time.

Description

A kind of fixed device of concrete creep distortion measurement meter

Technical field

The utility model relates to concrete experiments technical fields more particularly to a kind of concrete creep distortion measurement meter to fix Device.

Background technique

Concrete creep be one develop slowly, the process that the duration is long, so the needs of creeping of measurement concrete will pass Sensor is firmly secured in test block in the case where not damaging concrete test block and surface coated heat and moisture preserving layer.

However, existing concrete creep measuring device, can damage concrete test block surface in fixed distortion measurement timing.

Utility model content

The main purpose of the utility model is to provide a kind of fixed devices of concrete creep distortion measurement meter, it is intended to convenient Concrete creep is measured, while avoiding damage to concrete test block surface.

To achieve the above object, the utility model provides a kind of fixed device of concrete creep distortion measurement meter, including upper Gripping sleeve, lower gripping sleeve, distortion measurement meter and feeler lever, wherein

The measuring system fixator of outer male structure is equipped on the upper and lower gripping sleeve of upper gripping sleeve, distortion measurement meter is set It is placed in the measuring system fixator of gripping sleeve, feeler lever is set in the measuring system fixator of lower gripping sleeve, feeler lever and shape Become meter to abut.

Preferably, the measuring system fixator includes the through-hole, sleeve and fixing bolt being arranged on gripping sleeve, institute It states sleeve to be set in through-hole, fixing bolt extends radially through through-hole side wall and abut against on sleeve, distortion measurement meter along through-hole It protrudes into the sleeve on gripping sleeve and is fixed by fixing bolt, in the sleeve that feeler lever protrudes on lower gripping sleeve and pass through fixation Bolt is fixed.

Preferably, the sleeve is separable multi-clove type structure, it is highly preferred that being two-flap type structure.

Preferably, the sleeve is equipped with the truncated cone-shaped positioning blind being adapted to fixing bolt tail portion close to fixing bolt side Hole.

Preferably, the upper gripping sleeve and lower gripping sleeve include multiple clamp arms, and multiple clamp arms pass through fastener head Tail is in turn connected to form closed anchor ear.

Preferably, the clamp arm includes the clamping section of L-shaped structure and is located at the clamping section both ends from it to separate Interconnecting piece made of concrete test block side to be measured extends, the interconnecting piece are equipped with pin hole, and main force bolt is placed in pin hole, phase Adjacent two clamp arms are connected by main force bolt.

Preferably, the pin hole side of the interconnecting piece is provided with fixing bolt coordination hole or fixture nut coordination hole.

Preferably, flexible sandwich rubber piece is arranged in the clamp arm on the side wall of concrete test block side to be measured, more Preferably, the material of the flexible sponge film is ABS engineering plastics or hard rubber.

Preferably, the feeler lever is equipped with the probe based on by distortion measurement close to distortion measurement meter side and positions Heart location hole.

Preferably, the clamp arm outside is equipped with chamfering.

The utility model has the advantages that:

1. the utility model proposes the fixed device of concrete creep distortion measurement meter, by the way that flexible sponge film is arranged, Increasing friction force makes to fix stronger while better adapting to surface of test piece concave-convex change because of caused by package heat and moisture preserving layer Change, heat and moisture preserving layer will not be damaged.

2. a clamp arm more than is in turn connected to form closed anchor ear by fastener head and the tail to be placed on outside concrete test block, And fastener is not direct contacts with concrete test block, but distortion measurement meter and feeler lever are fixed in instrument slot by sleeve, Avoid precision and stability that measurement is also improved while damaging deformation meter.

3. the location hole at feeler lever tip platform center becomes more accurate by the positioning that distortion measurement meter is popped one's head in, do not allow more yet It influences and slides vulnerable to external force.

4. for distortion measurement meter and feeler lever, using same jig main body, it is allowed to by replacing different sleeves With different instruments, the convenience of versatility and replacement is increased, it is more convenient to use.In addition, the deformation of this concrete creep is surveyed The fixed device of meter also has many advantages, such as that structure is simple, convenient to use and measurement accuracy is high.

Detailed description of the invention

Fig. 1 is the fixed device overall assembling schematic diagram of the utility model concrete creep distortion measurement meter (containing test block)；

Fig. 2 is the structural representation at one visual angle of gripping sleeve on the fixed device of the utility model concrete creep distortion measurement meter Figure；

Fig. 3 is the structural representation at another visual angle of gripping sleeve on the fixed device of the utility model concrete creep distortion measurement meter Figure；

Fig. 4 is knot of the gripping sleeve when being equipped with feeler lever under the fixed device of the utility model concrete creep distortion measurement meter Structure schematic diagram；

Fig. 5 is the structural schematic diagram of gripping sleeve under the fixed device of the utility model concrete creep distortion measurement meter.

Fig. 6 is the structural schematic diagram of the fixed device middle sleeve of the utility model concrete creep distortion measurement meter.

In figure, 1- concrete test block, the upper gripping sleeve of 2-, gripping sleeve under 3-, the clamping section 4-, 5- measuring system fixator, 6- Feeler lever, the sleeve of the upper gripping sleeve of 7-, the sleeve of gripping sleeve under 8-, the main force bolt of 9-, 10- fixture nut, 11- fixing bolt, 12- fixing bolt is coordinated hole, and 13- fixture nut is coordinated hole, 14- fixing bolt screw hole, 15- chamfering, 16- pin hole, 17- truncated cone-shaped Blind locating holes.

Specific embodiment

In the following with reference to the drawings and specific embodiments, the technical solution of the utility model is further described in detail.

Referring to figs. 1 to Fig. 6, in this preferred embodiment, a kind of fixed device of concrete creep distortion measurement meter, including upper folder Fixed 2, lower gripping sleeve 3, distortion measurement meter (not shown) and feeler lever 6, wherein

Upper gripping sleeve 2 and lower gripping sleeve 3 are respectively sleeved in the upper/lower terminal of concrete test block 1, in upper gripping sleeve 2 and lower folder The measuring system fixator 5 of outer male structure is equipped on fixed 3, measuring system fixator 5 includes that leading on gripping sleeve is arranged in Hole, sleeve and extending radially through through-hole side wall and abut against the fixing bolt 11 on sleeve along through-hole, sleeve is located in through-hole, Distortion measurement meter is protruded into the sleeve 7 on gripping sleeve 2 and is fixed by fixing bolt 11, and feeler lever 6 protrudes on lower gripping sleeve 3 In sleeve 8 and fixed by fixing bolt 11, the top of distortion measurement meter and feeler lever 6 after installation is abutted against to measure concrete It creeps.

Upper gripping sleeve 2 and lower gripping sleeve 3 include two clamp arms, and 2 clamp arm head and the tail are in turn connected to form closed To be placed on outside concrete test block 1, clamp arm includes L-shaped structure and is bonded the folder of setting with concrete sample outer surface anchor ear Tight portion 4 and it is located at 4 both ends of clamping section from its interconnecting piece to made of extending far from 1 side of concrete test block, the interconnecting piece It is equipped with pin hole 16, the pin hole 16 that main force bolt 9 passes through two clamp arms connects adjacent two clamp arm, the two sides point of pin hole 16 It is not provided with fixing bolt coordination hole 12 and fixture nut coordination hole 13, to facilitate the main force bolt 9 of installation and it is cooperated to make Fixture nut 10.The pin hole 16 of two clamp arms is passed through by main force bolt 9, rather than main force bolt 9 is directly pushed up Tightly in the surface of concrete test block 1, is directly contacted so as to avoid main force bolt 9 with concrete test block 1 and damage its surface.

Sleeve 7 and lower clamping in order to preferably avoid the heat and moisture preserving layer of clamp device damage test specimen, on upper gripping sleeve Sleeve 8 is separable multi-clove type structure on set (Fig. 6 is specifically described by taking two-flap type structure as an example).Fixing bolt 11 is not Directly contacted with fixed distortion measurement meter or feeler lever 6, but by screwing in fixing bolt 11 in fixing bolt screw hole 14, Abutted with sleeve 7 or sleeve 8, to be fixed in measuring system fixator 5, effectively avoid damaging deformation meter or The precision and stability of measurement are also improved while feeler lever 6.

In order to preferably protect the heat and moisture preserving layer of concrete sample, in clamp arm on the side wall of concrete test block 1 Flexible sandwich rubber piece (Pasting is on side wall) is set.In order to adapt to the fixation of different size test specimens, sleeve is detachably installed In through-hole.Likewise, upper gripping sleeve 2 and lower gripping sleeve 3 are arranged in pairs or groups, it is (fixed that different functions can be realized in various sizes of sleeve Different objects), the versatility of the fixed device of this concrete creep distortion measurement meter is increased, there is no a bad part is whole The case where a fixture cannot all reuse, using and replace the part other than screw also becomes more convenient.

In order to keep fixed effect more preferable, it is equipped with and its tail portion in sleeve 7 and sleeve 8 close to the side of fixing bolt 11 The truncated cone-shaped Blind locating holes 17 of adaptation.By the way that truncated cone-shaped Blind locating holes 17 are arranged, on the one hand facilitate the installation of fixing bolt 11, separately The presence of one side truncated cone-shaped Blind locating holes 17 also makes the connection of fixing bolt 11 and sleeve stronger, thus moving coagulation When native test block 1, distortion measurement meter (not shown) and feeler lever 6 will not occur the changing of the relative positions and fall off.

In order to be avoided as much as the offset of the feeler lever 6 in measurement process to influence measurement accuracy, in feeler lever 6 close to shape Become meter side and is equipped with the center positioning hole popped one's head in and positioned based on by distortion measurement.The external diameter of rod body of feeler lever 6 can also Design it is slightly bigger, in addition the center positioning hole of setting, so that feeler lever 6 be made to only have two freedom degrees of Z-direction translation and rotation, Unless there are huge external force, be otherwise difficult to make its axis runout vertical direction, next allow distortion measurement meter probe and 6 top of feeler lever It is difficult that the changing of the relative positions occurs again between platform, greatly enhances the accuracy of measurement result.

In order to reach preferably fixed effect and reduce unnecessary abrasion, referring to Fig. 2 to Fig. 5, clamp arm edges and corners Equipped with chamfering 15, thus the fixed device of this concrete creep distortion measurement meter is not easy to hurt sb.'s feelings, and has also further prevented clamp arm side A possibility that right angle causes pressure break to concrete sample surface at frame inner wall sideline.

In the present embodiment, all fixing bolts use six point cylindrical head bolt in national standard, and matching nut of arranging in pairs or groups, and use Very convenient or even fixation early period can be by having been manually done, and purchasing and replacing for the parts such as bolt and nut itself is also held very much Easily, quality can also be guaranteed.

In the present embodiment, upper gripping sleeve 2 and lower gripping sleeve 3 can be formed by CNC, and the error in processing is minimum.Upper folder Fixed 2, lower gripping sleeve 3, sleeve 7, sleeve 8 and feeler lever 6 can using 6 line aluminium alloys (such as 6061), 7 systems (such as 7005, 7075) aluminium alloy or engineering plastics (such as PC, POM, PP, ABS), the material of flexible sponge film be ABS engineering plastics or Hard rubber.On the basis of keeping meeting requirement (including moving test block by stress point of fixer body), reduce Weight more saves cost.

The working principle of the fixed device of the concrete creep distortion measurement meter of the utility model is as follows:

Upper gripping sleeve 2 and lower gripping sleeve 3 are respectively sleeved in the upper/lower terminal of concrete test block 1 and by main force bolt 9 After its each self-retaining, installation sleeve 7 and sleeve 8, and distortion measurement meter and feeler lever 6 are respectively placed in sleeve 7 and sleeve 8 In, after adjustment position contacts the probe of distortion measurement meter just with 6 top of feeler lever, tightens fixing bolt 11 and respectively survey deformation Meter and feeler lever 6 are fixed.After a period of time, by obtaining the relative displacement between distortion measurement meter and feeler lever 6, obtains and be fixed The vertical amount of creeping of concrete column between upper gripping sleeve 2 and lower gripping sleeve 3.

The fixed device of the concrete creep distortion measurement meter that the present embodiment proposes is increased by the way that flexible sponge film is arranged Frictional force keeps the fixation device fixation of concrete creep distortion measurement meter stronger simultaneously, better adapts to surface of test piece because of package The variation of bumps caused by heat and moisture preserving layer, will not damage heat and moisture preserving layer, when the material of flexible sponge film is ABS engineering plastic The effect fastened when material or hard rubber is more preferable.In addition, multiple clamp arms are in turn connected to form closed armful by fastener head and the tail Hoop is to be placed on outside concrete test block 1, and fastening screw is not direct contacts with concrete test block 1, avoids damage to heat and moisture preserving layer. In addition, the fixed device of this concrete creep distortion measurement meter also has structure simple, convenient to use and high measurement accuracy excellent Point.

The above is only the preferred embodiments of the utility model, and therefore it does not limit the scope of the patent of the utility model, all Equivalent structure transformation made based on the specification and figures of the utility model, it is relevant to be applied directly or indirectly in other Technical field similarly includes within the protection scope of the present utility model.

Claims (10)

1. a kind of fixed device of concrete creep distortion measurement meter, including upper gripping sleeve, lower gripping sleeve, distortion measurement meter and touching Bar, it is characterised in that:

The measuring system fixator of evagination is equipped on the upper and lower gripping sleeve of upper gripping sleeve, distortion measurement meter is set to folder In fixed measuring system fixator, feeler lever is set in the measuring system fixator of lower gripping sleeve, feeler lever and distortion measurement meter It abuts.

2. the fixed device of concrete creep distortion measurement meter according to claim 1, which is characterized in that the measuring system Fixator includes the through-hole, sleeve and fixing bolt being arranged on gripping sleeve, and the sleeve is set in through-hole, fixing bolt Extending radially through through-hole side wall and abut against on sleeve along through-hole, distortion measurement meter protrudes into the sleeve on gripping sleeve and passes through Fixing bolt is fixed, and is fixed in the sleeve that feeler lever protrudes on lower gripping sleeve and by fixing bolt.

3. the fixed device of concrete creep distortion measurement meter according to claim 2, which is characterized in that the sleeve is can Separate multi-clove type structure.

4. the fixed device of concrete creep distortion measurement meter according to claim 3, which is characterized in that the sleeve is close Fixing bolt side is equipped with the truncated cone-shaped Blind locating holes being adapted to fixing bolt tail portion.

5. the fixed device of concrete creep distortion measurement meter according to claim 1 to 4, which is characterized in that on described Gripping sleeve and lower gripping sleeve include multiple clamp arms, and multiple clamp arms are in turn connected to form closed armful by fastener head and the tail Hoop.

6. the fixed device of concrete creep distortion measurement meter according to claim 5, which is characterized in that the clamp arm packet It includes the clamping section of L-shaped structure and is located at the clamping section both ends from it to made of separate concrete test block side to be measured extension Interconnecting piece, the interconnecting piece are equipped with pin hole, and main force bolt is placed in pin hole, and two neighboring clamp arm passes through main force bolt phase Even.

7. the fixed device of concrete creep distortion measurement meter according to claim 6, which is characterized in that the interconnecting piece Pin hole side is provided with fixing bolt coordination hole or fixture nut coordination hole.

8. the fixed device of concrete creep distortion measurement meter according to claim 7, which is characterized in that the clamp arm leans on Flexible sandwich rubber piece is set on the side wall of nearly concrete test block to be measured.

9. the fixed device of concrete creep distortion measurement meter according to claim 8, which is characterized in that the feeler lever is close Distortion measurement meter side is equipped with center positioning hole.

10. the fixed device of concrete creep distortion measurement meter according to claim 9, which is characterized in that the clamp arm Outside is equipped with chamfering.