CN215449287U - Concrete gas content tester - Google Patents

Abstract

The application relates to the technical field of concrete mixture performance tests and discloses a concrete air content tester which comprises a pot body, a pot cover, a support frame and a scraper component, wherein the support frame is detachably and fixedly arranged on the pot body; the scraper component comprises a scraper, a vibrator arranged on the scraper and a height adjusting mechanism capable of driving the scraper to move up and down, the height adjusting mechanism is arranged on the sliding groove and can move back and forth along the sliding groove, and a damping piece is arranged between the scraper and the height adjusting mechanism. The concrete in the bowl body is more compact, the surface is smooth, the flatness is better, and then the air content detection result is more accurate.

Description

Concrete gas content tester

Technical Field

The utility model belongs to the field of concrete mixture performance tests, and particularly relates to a concrete gas content tester.

Background

The concrete is an artificial stone material which is prepared by mixing aggregates such as water, cement, sand and stone and other various additives and admixtures according to a certain proportion and hardening for a certain time. The gas content in the concrete is too large, and the holes are too many, so that the concrete is not compact and has low strength due to the formation of a honeycomb shape; the gas content is too small, the workability is poor, the freezing resistance is poor, and the cracking is easy. Therefore, the air content can have a great influence on the construction performance, mechanical property, deformation performance and durability of mortar, and the air content of the concrete mixture needs to be measured to judge the performance of concrete.

In the conventional concrete air content measuring instrument, a freshly mixed concrete mixture is generally uniformly loaded into a bowl, inserted and crushed by a tamper, and then the surface is scraped off. The manual operation mode wastes time and labor, and the flatness of the concrete surface is not enough, so that the final detection result is influenced. In the prior art, a structure that the automatic scraping is carried out by adopting a rotating shaft and a scraping plate is also adopted, and meanwhile, the scraping plate is provided with a vibration device, so that the working efficiency is improved, and meanwhile, the flatness of the concrete surface is also favorably ensured. Because the scraping plate and the vibration device are arranged and fixed on the pot body, the vibration can be transmitted to the pot body, so that the pot body is unstable, the inclination and the falling are generated, and the detection is not facilitated.

SUMMERY OF THE UTILITY MODEL

The utility model provides a concrete gas content tester, which aims to solve at least one technical problem of the technical problems.

The technical scheme adopted by the utility model is as follows:

the utility model provides a concrete gas content tester, which comprises a pot body, a pot cover and a support frame, wherein the support frame is detachably and fixedly arranged at the upper end of the pot body; and the scraper component is arranged on the support frame, the scraper component comprises a scraper, a vibrator arranged on the scraper and a height adjusting mechanism capable of driving the scraper to move up and down, the height adjusting mechanism is arranged on the sliding groove and can reciprocate along the sliding groove, and a damping piece is arranged between the scraper and the height adjusting mechanism.

As a preferred embodiment of the utility model, the damping member comprises a damping spring, one end of the damping spring is connected with the scraper, and the other end of the damping spring is connected with the height adjusting mechanism.

As a preferred embodiment of the present invention, the damping member further includes a limiting groove protruding from the scraper, and a connecting rod fixed below the height adjusting mechanism, the connecting rod is in insertion fit with the limiting groove, and the damping spring surrounds the limiting groove and the outer side of the connecting rod.

As a preferred embodiment of the present invention, the shock absorbing member further includes an elastic buffer pad fixed below the link.

As a preferred embodiment of the present invention, the height adjustment mechanism includes a screw and a threaded sleeve in threaded engagement with the screw, the threaded sleeve has a flange at an upper end thereof, the flange is inserted into the sliding groove and can move along the sliding groove, and a connecting rod is connected to a lower end of the screw.

As a preferred embodiment of the present invention, the height adjustment mechanism further includes a hand wheel disposed at an upper end of the screw rod, and the relative rotation between the screw rod and the screw sleeve is realized by rotating the hand wheel.

As a preferred embodiment of the utility model, the scraper comprises a scraper body and a pulp baffle extending upwards along the edge of the scraper body, and the scraper body is parallel to the end face of the pot body.

In a preferred embodiment of the present invention, the paddle guard is provided at least on an edge of the squeegee body perpendicular to the extending direction of the slide groove.

As a preferred embodiment of the present invention, the measuring apparatus further comprises a fixing base, the fixing base comprises an installation groove, at least one pair of clamping blocks arranged in the installation groove symmetrically relative to the bowl body, and a pre-tightening spring connected with the clamping blocks, the extension direction of the installation groove is consistent with the extension direction of the sliding groove, and the clamping blocks can provide pre-tightening force of the clamping blocks towards the bowl body along the installation groove pre-tightening spring.

In a preferred embodiment of the present invention, rollers are disposed below the fixing base.

Due to the adoption of the technical scheme, the utility model has the beneficial effects that:

1. according to the concrete gas content tester, the mode of combining the scraper and the vibrator is adopted, the vibrator is started in the scraping process, the vibrator can drive the scraper to vibrate continuously, and concrete is more compact, the surface is smooth, and the flatness is better. Height-adjusting mechanism can drive the scraper blade and reciprocate, adds to the position that is higher than the alms bowl body terminal surface when concrete mixture, through the height-adjusting mechanism portable scraper blade to the height with alms bowl upper end parallel and level. The scraper is driven by the height adjusting mechanism to do radial reciprocating motion along the sliding groove to scrape the surface of the concrete. Meanwhile, in the mode of adding concrete for three times, after each layer of concrete is added, the scraper can be adjusted to a proper height for vibration and leveling. The shock-absorbing piece has a buffer effect on the shock of the scraper, and can avoid the situation that the shock is transmitted to the height adjusting mechanism along the scraper and finally causes the shock of the pot body to incline and the like.

2. According to the concrete gas content tester, the damping piece is a damping spring which is connected with the scraper and the height adjusting device, and the damping spring has a buffering effect on the vibration of the scraper, so that the occurrence of the conditions that the vibration is transmitted to the height adjusting device along the scraper and the vibration inclination of a pot body is finally caused can be avoided. Specifically, set up stop device in damping spring's inside, through the grafting cooperation of protrusion in the spacing groove of scraper blade and the connecting rod that is fixed in high adjustment mechanism below, form spacing damping spring in compression direction is ascending, avoid the spring atress and slope. When vibrations are too big, the elastic buffer pad arranged below the connecting rod can buffer the collision between the connecting rod and the bottom surface of the limiting groove, and further the damping effect is achieved.

3. The concrete air content tester also comprises a fixed seat for fixing the bowl body, thereby further ensuring the stability of the bowl body. The bowl body is clamped and fixed by at least one pair of clamping blocks which are symmetrically arranged relative to the bowl body, the extending direction of the mounting groove is consistent with the extending direction of the sliding groove, the clamping force provided by the clamping blocks is offset with the acting force generated by the translational motion of the scraper on the bowl body, and the influence of the motion of the scraper on the bowl body can be reduced. Due to the telescopic characteristic of the spring, the clamping block can be used for clamping bowls with different sizes.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model and not to limit the utility model. In the drawings:

fig. 1 is a first schematic structural diagram of a concrete gas content measuring instrument according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram ii of a concrete gas content measuring instrument according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a supporting frame according to an embodiment of the present invention;

FIG. 4 is a schematic structural view of a squeegee assembly provided by an embodiment of the utility model;

FIG. 5 is a schematic cross-sectional view of a squeegee assembly provided by an embodiment of the utility model;

fig. 6 is a schematic structural diagram three of the concrete gas content measuring instrument provided in the embodiment of the present invention;

fig. 7 is a schematic structural diagram of a fixing base according to an embodiment of the present invention.

Wherein the content of the first and second substances,

1. a bowl body;

2. a bowl cover; 21. an air chamber; 22. a meter;

3. a support frame; 31. a sliding groove; 32. a locking member; 33. a support;

4. a squeegee assembly; 41. a squeegee; 411. a squeegee body; 412. a pulp baffle; 42. a vibrator; 43. a height adjustment mechanism; 431. a screw; 432. a threaded sleeve; 4321. a flange; 433. a hand wheel; 44. a shock absorbing member; 441. a damping spring; 442. a limiting groove; 443. a connecting rod; 444. an elastic cushion pad;

5. a fixed seat; 51. mounting grooves; 52. a clamping block; 53. pre-tightening the spring; 54. and a roller.

Detailed Description

In order to more clearly explain the overall concept of the present application, the following detailed description is given by way of example in conjunction with the accompanying drawings.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.

In addition, in the description of the present invention, it is to be understood that the terms "top," "bottom," "inner," "outer," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present invention and simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated, and thus are not to be construed as limiting the present invention.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; the connection can be mechanical connection, electrical connection or communication; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

As shown in figures 1-4, the utility model provides a concrete air content tester, which comprises a bowl body 1 and a bowl cover 2, wherein the bowl cover 2 is provided with an air chamber 21 and a meter 22. The tester also comprises a support frame 3 which is detachably and fixedly arranged at the upper end of the pot body 1, the support frame 3 is fixed at the upper end of the pot body 1 through a locking piece 32, the support frame 3 is supported by four brackets 33, an annular mounting frame is arranged at the top of each bracket 33, and a sliding groove 31 is formed in the mounting frame in a manner of extending along the radial direction of the pot body. The bracket 33 comprises a locking member 32 which can be clamped on the edge of the upper end of the pot 1, and the locking member 32 comprises a locking screw and a locking nut, and the bracket 33 is fixed on the upper end of the pot 1 through the locking nut.

The measuring instrument further comprises a scraper assembly 4 mounted on the support frame 3, wherein the scraper assembly 4 comprises a scraper 41, a vibrator 42 arranged on the scraper 41 and a height adjusting mechanism 43 capable of driving the scraper 41 to move up and down. The scraper 41 is parallel to the upper end face of the bowl 1, and the length direction of the scraper 41 is perpendicular to the extending direction of the sliding groove 31. The vibrator 42 is located on the upper surface of the scraping plate 41, and the height adjusting mechanism 43 is mounted on the sliding groove 31 and can move along the sliding groove 31, that is, the height adjusting mechanism 43 drives the scraping plate 41 to reciprocate along the radial direction of the pot body 1 to scrape the surface of the concrete. After the bowl body 1 is filled with concrete, the scraper 41 is moved to a height level with the upper end of the bowl body 1 through the height adjusting mechanism 43, the vibrator 42 is started, the vibrator 42 drives the scraper 41 to vibrate continuously, and at the moment, the height adjusting mechanism 43 drives the scraper 41 to reciprocate along the sliding groove 31 until the surface of the concrete is smooth. Under the simultaneous action of vibrations and strickle, the concrete is more closely knit, and the surface is smooth, and the roughness is better. For the way of adding concrete three times, after each layer of concrete is added, the scraper 41 is adjusted to a proper height for vibration and leveling.

Further, a shock absorbing part 44 is arranged between the scraping plate 41 and the height adjusting mechanism 43, so that the situation that the shock is transmitted to the height adjusting mechanism 43 along the scraping plate 41 and causes the shock inclination of the pot body 1 and the like can be avoided.

In the embodiment, the working mode of the concrete air content measuring instrument is that firstly, fresh concrete mixture is fully added into the pot body 1; secondly, mounting the support frame 3, the height adjusting mechanism 43 and the scraper component 44 on the upper end face of the pot body 1, wherein the height adjusting mechanism 43 drives the scraper 41 to be at the height level with the upper end face of the pot body 1; fourthly, starting the vibrator 42, and simultaneously moving the height adjusting mechanism 43 to do the wangfu movement along the sliding groove 31 until the surface of the concrete is smooth; fourthly, the supporting frame 3, the height adjusting mechanism 43 and the scraper component 44 are taken down, and the edge of the pot body 1 is wiped clean; fifthly, the bowl cover 2 is tightly covered on the upper end surface of the bowl body 1 for detection.

As shown in fig. 4 to 5, as a preferred embodiment of the present invention, the damping member 44 includes a damping spring 441, and one end of the damping spring 441 is connected to the squeegee 41 and the other end thereof is connected to the height adjusting mechanism 43. The damping spring 441 has a damping effect on the vibration of the scraping plate 41, and can avoid the condition that the vibration is transmitted to the height adjusting mechanism 43 along the scraping plate 41 and finally causes the vibration inclination of the pot body 1 and the like.

As shown in fig. 4 to 5, as a preferred embodiment of the present invention, the shock absorbing member 44 further includes a limiting groove 442 protruding from the scraper 41, and a connecting rod 443 fixed below the height adjusting mechanism 43, wherein the limiting groove 442 and the connecting rod 443 are both cylindrical bodies, and the diameter of the connecting rod 443 is smaller than the diameter of the limiting groove 442. The connecting rod 443 is inserted into the limiting groove 442, and the damping spring 441 surrounds the limiting groove 442 and the outer side of the connecting rod 443. The limiting device is arranged in the damping spring 441, and the limiting groove 442 protruding out of the scraper 41 is in inserted connection with the connecting rod 443 fixed below the height adjusting mechanism to limit the damping spring 441 in the compression direction, so that the damping spring 441 is prevented from being stressed and inclined.

As shown in fig. 5, as a preferred embodiment of the present invention, the shock-absorbing member 433 further includes an elastic cushion 444 fixed below the link 443. When the shock is excessive, the elastic cushion 444 provided below the link 443 can cushion the collision between the link 443 and the bottom surface of the stopper groove 442, thereby further achieving a shock-absorbing effect.

As shown in fig. 2 to 5, as a preferred embodiment of the present invention, the height adjusting mechanism 43 includes a screw rod 431 and a threaded sleeve 432 in threaded engagement with the screw rod 431, wherein a flange 4321 is provided at an upper end of the threaded sleeve 432, and the flange 4321 is inserted into the sliding groove 31. The screw sleeve 432 is fixed in height, and the screw 431 is rotated to move up and down, so that the height of the scraper 41 is adjusted. The lower end of the screw 431 is connected with a rod, the scraper 41 assembly 4 is fixedly connected with the screw 431, a connecting rod 443, the vibrator 42 and the scraper 41 from top to bottom, and the screw sleeve 432 can move along the sliding groove 31, so that the screw 431, the vibrator 42 and the scraper 41 are driven to move horizontally to carry out scraping movement.

As shown in fig. 2 and 4, as a preferred embodiment of the present invention, the height adjusting mechanism 43 further includes a hand wheel 433 provided at an upper end of the screw 431, the hand wheel 433 may be screwed to the screw 431 or may be integrated with the screw 431, and the hand wheel 433 is rotated to rotate the screw 431 and the threaded sleeve 432 relative to each other, thereby adjusting the height of the screw 431 and moving the squeegee 41 up and down.

As shown in fig. 4-5, as a preferred embodiment of the utility model, the scraper 41 includes a scraper body 411 and a baffle 412 extending upward along the edge of the scraper body 411, the scraper body 411 is parallel to the end face of the bowl 1, and the baffle 412 can push excess concrete out of the bowl 1.

As shown in fig. 4 to 5, as a preferred embodiment of the present invention, the paddle guard 412 is provided at least on the edge of the squeegee body 41 perpendicular to the extending direction of the slide groove 31.

As shown in fig. 6-7, the tester also includes a fixing base 5 to further ensure the stability of the bowl 1. The upper surface of the fixed seat 5 is provided with a mounting groove 51, at least one pair of clamping blocks 52 which are arranged in the mounting groove 51 and are symmetrical relative to the pot body 1, and a pre-tightening spring 53 which is connected with the clamping blocks 52. In one embodiment, a pair of clamping blocks 52 are arranged symmetrically relative to the bowl body 1 to clamp and fix the bowl body 1, the extending direction of the mounting groove 51 is consistent with the extending direction of the sliding groove 31, the clamping force provided by the clamping blocks 52 offsets the acting force generated by the translational motion of the scraper 41 on the bowl body 1, and the influence of the motion of the scraper 41 on the bowl body 1 can be reduced. Pretensioning of the clamping block 52 along the mounting groove 51 by the spring 53 can provide pretensioning of the clamping block 52 towards the bowl 1, and due to the telescopic nature of the spring, the clamping block 52 can be used to clamp bowls 1 of different sizes.

As shown in fig. 6-7, as a preferred embodiment of the present invention, rollers 54 are disposed below the fixing base 5, and the rollers 54 are distributed at four corners of the fixing base 5, so that the fixing base 5 can be moved to a specific position according to the environment requirement.

The method can be realized by adopting or referring to the prior art in places which are not described in the utility model.

The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments.

The above description is only an example of the present invention, and is not intended to limit the present invention. Various modifications and alterations to this invention will become apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims (10)

1. The concrete air content measuring instrument includes a bowl body and a bowl cover, and is characterized by also including

The supporting frame is detachably and fixedly arranged at the upper end of the pot body, and a sliding groove is formed in the supporting frame along the radial direction of the pot body;

install in the scraper blade subassembly of support frame, the scraper blade subassembly includes the scraper blade, locates the vibrator of scraper blade and can drive the height control mechanism that the scraper blade reciprocated, height control mechanism install in the sliding tray just can follow sliding tray reciprocating motion, the scraper blade with still be equipped with the damper between the height control mechanism.

2. The concrete air content tester according to claim 1, wherein the shock-absorbing member comprises a shock-absorbing spring, one end of the shock-absorbing spring is connected with the scraper, and the other end of the shock-absorbing spring is connected with the height adjusting mechanism.

3. The concrete gas content tester according to claim 2, wherein the shock-absorbing member further comprises a limiting groove protruding from the scraper and a connecting rod fixed below the height adjusting mechanism, the connecting rod is in inserted fit with the limiting groove, and the shock-absorbing spring surrounds the limiting groove and the outer side of the connecting rod.

4. The apparatus as claimed in claim 3, wherein the shock-absorbing member further comprises an elastic buffer pad fixed below the connecting rod.

5. The concrete gas content tester according to claim 3, wherein the height adjusting mechanism comprises a screw and a screw sleeve in threaded fit with the screw, a flange is arranged at the upper end of the screw sleeve, the flange is inserted into the sliding groove and can move along the sliding groove, and the lower end of the screw is connected with the connecting rod.

6. The apparatus as claimed in claim 5, wherein the height adjustment mechanism further comprises a hand wheel disposed at an upper end of the screw rod, and the hand wheel is rotated to realize relative rotation between the screw rod and the threaded sleeve.

7. The concrete air content tester according to claim 1, wherein the scraper comprises a scraper body and a baffle plate extending upwards along the edge of the scraper body, and the scraper body is parallel to the end face of the pot body.

8. The concrete air content tester according to claim 7, wherein the baffle plate is provided at least at an edge of the scraper main body perpendicular to an extending direction of the sliding groove.

9. The concrete air content tester according to claim 1, further comprising a fixing seat, wherein the fixing seat comprises a mounting groove, at least one pair of clamping blocks arranged in the mounting groove and symmetrical relative to the pot body, and a pre-tightening spring connected with the clamping blocks, the extending direction of the mounting groove is consistent with the extending direction of the sliding groove, and the pre-tightening spring can provide pre-tightening force of the clamping blocks towards the pot body.

10. The apparatus according to claim 9, wherein rollers are provided under the fixing base.

Images