CN210322370U - Quick extraction element of asphalt concrete core appearance - Google Patents

Abstract

The utility model discloses a rapid extraction device for an asphalt concrete core sample, which comprises a fastening part and a working part which are mutually matched; the tightening member is a tension collar having a first cone end; the structure of the working component is as follows: the split opening and closing device comprises a split opening and closing section, wherein a plurality of split cracks are uniformly formed in the split opening and closing section along the vertical direction of the split opening and closing section, a second cone end is arranged at the lower end of the split opening and closing section, and a loading bearing section is fixed on the upper portion of the split opening and closing section. The utility model discloses the device effectively reduces personnel and drops into, improves work efficiency greatly, sparingly detects the cost, reduces asphalt concrete core construction progress and disturbs.

Description

Quick extraction element of asphalt concrete core appearance

Technical Field

The utility model relates to a concrete detection device technical field, especially a quick extraction element of bituminous concrete core appearance.

Background

The asphalt concrete has good seepage resistance and is suitable for the sinking deformation performance of earth-rock dams, and the construction technology and special construction equipment tend to be mature when the asphalt concrete is applied to hydraulic buildings more and more. According to the requirements of regulation specifications, core drilling and sampling are required to be carried out when the height of the asphalt concrete core wall rises by 2-4 meters, and physical performance verification detection and interlayer combination condition inspection such as concrete density, porosity, asphalt content, mineral aggregate gradation and the like are carried out; and drilling holes for detecting mechanical properties such as trabecular bending and three axes when the core wall rises by 10-12 meters. After drilling with a high speed coring machine, a core sample of about 40 cm is broken and extracted from the hole. The core appearance that used before draws the mode and mostly uses the change of tool to make a round trip to rock, treats that the fracture back of bottom uses anchor clamps to draw, and the process is comparatively loaded down with trivial details, and consuming time is hard, and is unfavorable for the protection of core appearance. By market research and similar projects, no better mode or equipment is applied to the core-wall coring practice at present.

Because no device specially used for extracting the asphalt concrete core sample is produced, all scientific research and test detection mechanisms use the traditional method or auxiliary tools processed by the scientific research and test detection mechanisms, the types are various, even a large amount of manpower, material resources and financial resources are input for the scientific research and test detection mechanisms, and most auxiliary equipment does not get rid of the bad phenomena of long time, high personnel input, damaged core samples and the like.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a quick extraction element of asphalt concrete core appearance is provided, the personnel that effectively reduce drop into improves work efficiency greatly, sparingly detects the cost, reduces asphalt concrete core construction progress and disturbs.

In order to solve the technical problem, the utility model discloses a technical scheme is:

a rapid extraction device for an asphalt concrete core sample comprises a fastening component and a working component which are matched with each other; the tightening member is a tension collar having a first cone end; the structure of the working component is as follows: the split opening and closing device comprises a split opening and closing section, wherein a plurality of split cracks are uniformly formed in the split opening and closing section along the vertical direction of the split opening and closing section, a second cone end is arranged at the lower end of the split opening and closing section, and a loading bearing section is fixed on the upper portion of the split opening and closing section.

Further, the splitting crack is 3.

Furthermore, a notch is formed at the lower end of the splitting opening and closing section.

Furthermore, an extension protection section is arranged and fixed between the splitting opening and closing section and the loading bearing section.

Furthermore, the loading bearing section is tightly fixed with the extension protection section through screw threads.

Further, the loading bearing section is provided with a stress concave part.

Compared with the prior art, the beneficial effects of the utility model are that:

1) the waste drill steel cylinder is used for processing, so that the integral strength is high, the cost is saved, and the research and development investment is reduced;

2) during the use directly install the tensioning lantern ring in the splitting and open and shut the section bottom after put into core appearance drilling gap bottom, strike and twist reverse and can accomplish the core appearance and draw the operation, easy operation is convenient. Meanwhile, the original drill steel cylinder is modified and matched with the core sample in size, so that the protection effect is achieved, the possibility of damage or deformation in the core sample extraction process is reduced, and the protection effect and the utilization rate of the core sample are improved;

3) the extraction operation can be rapidly finished by a single person, the personnel investment is reduced, the detection time is saved, and the construction cost is reduced; according to statistics, the time of single core sample extraction is shortened from the previous 25 min/to the current 1.5 min/so that the time of operation is greatly reduced and the working efficiency is improved. Meanwhile, the personnel investment is reduced from 2 persons/group to 1 person/group, and the personnel investment is reduced.

Drawings

FIG. 1 is a schematic view of a structure of a tension collar in the device of the present invention;

FIG. 2 is a schematic structural diagram of the splitting open/close section in the device of the present invention;

FIG. 3 is a front view of a loading load-bearing section of the apparatus of the present invention;

FIG. 4 is a top view of a loading bearing section of the apparatus of the present invention;

fig. 5 is a schematic view of the overall structure of the device of the present invention.

In the figure: 1-a tension collar; 2-a first cone end; 3-splitting a crack; 4-splitting the opening and closing section; 5-a second cone end; 6-opening; 7-loading the load-bearing section; 8-a force-bearing recess; 9-extension of the protection section.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments. The utility model discloses the device includes fastening part (tensioning lantern ring 1) and working part (splitting open and shut section 4, extension protection section 9 and loading bearing section 7), specifically as follows:

firstly, the design and processing of the tensioning lantern ring 1 (as shown in figure 1)

1. Practice of

1) By internal diameter

Machining and manufacturing a steel cylinder of a waste core-drilling machine bit with the diameter delta of 3mm, and cutting a ring with the length of 50mm from the bottom of the steel cylinder;

2) and (3) turning the intercepted circular ring by a lathe, wherein the top of the circular ring is thinned, the wall thickness of the top of the steel cylinder is 1mm, the circular ring is gradually thickened to 3mm, and a circular cone space with a large top and a small lower part is formed inside the circular ring, namely the first cone end 2.

2. Effect verification

1) The steel cylinder is cut by a drill bit, so that the strength is high, the steel cylinder is matched with the size of a drilling gap, and the steel cylinder can be smoothly placed at the bottom of a hole of a drill core;

2) the top of the tensioning lantern ring 1 is thin and thick, and the splitting opening and closing section 4 on the upper portion can be smoothly sleeved in the tensioning lantern ring.

Secondly, splitting open-close section 4 design and processing (as shown in figure 2)

1. Practice of

1) Using inside diameters

Delta 3mm waste core-taking machine drill bit steel cylinder processing and manufacturing, the length of the splitting opening and closing section 4 is 400cm, the bottom of the splitting opening and closing section is machined by a lathe, the thickness of the split opening and closing section is reduced along the outer wall, the bottommost part of the splitting opening and closing section is turned into the thickness of 1mm from the original wall thickness of 3mm, the thickness of the split opening and closing section is gradually increased upwards, the split opening and closing section is changed into the original wall thickness of 1;

2) after trisecting the cylinder, vertically splitting three splitting cracks 3 along a bisector, wherein the width of each crack is about 6mm, and the length of each crack is about 400 cm;

3) the bottom of the split crack 3 is cut into the notch 6, the split crack 3 is taken as a central line, the notch 6 with the height of 15mm and the width of 30mm is formed, and the effect of increasing the telescopic distance is achieved.

2. Effect verification

1) The splitting opening and closing section 4 is processed by an original core bit steel cylinder, has the size matched with the gap of the drill core and can be smoothly placed at the bottom of the asphalt concrete core sample;

2) the outer wall car of bottom is connected smoothly with the tensioning lantern ring 1 after thin, and along with splitting open and shut section 4 deepens tensioning lantern ring 1 bottom, the inner space constantly tightens up, can reach the local effect of cramping of core appearance. After the clamping, the top rotates, the clamping part at the bottom and the core sample integrally rotate without the loosening sign, and the core sample has good scratching effect;

3) after the bottom is hooped, the top is not changed in space due to the effect of splitting crack, and the core sample is not damaged.

Design and processing of extension protection section 9

1. Practice of

1) Using inside diameters

Machining and manufacturing a waste core drilling machine bit steel cylinder with the diameter of delta 3mm, wherein the cutting length is 400 mm;

2) the bottom of the extension protection section 9 is connected with the top of the splitting open-close section 4 into a whole.

2. Effect verification

1) The bottom of the extension protection section 9 and the top of the splitting open-close section 4 are connected into a whole, so that the device is stable and reliable;

2) after the core sample is extended, the core sample enters the extension protection area after the length of the core sample is increased, the protection effect is good, and the core sample is intact and has no damage.

Design and processing of load bearing section 7 (as shown in fig. 3 and 4)

1. Practice of

1) Use of

High-strength stainless steel solid cylinder processing and manufacturing, cylinder length of 70mm, bottom of 20mm threading and extension protectionThe sections are connected by screw threads, so that the sections can be conveniently replaced after being damaged;

2) the left side and the right side of a cylinder with a 30mm upward section of a threading area are respectively inwards reduced by 5mm to form a stress area of a special tool such as a torsional pipe wrench or a spanner;

3) the upper part of the cutting section is a stress concave part 8 with the thickness of 20mm, and is hit by a heavy downward hammer.

2. Effect verification

1) The loading bearing section 7 and the extension protection section 9 are connected by screw threads, and are firm and free of looseness;

2) the reduced parts are twisted by special tools such as pipe tongs or wrenches with obvious twisting effect, convenience and easiness, and simple operation;

3) the top bearing area is hit by an iron hammer, the top bearing area is solid and has no deformation, the whole descending is obvious, and the bottom tensioning lantern ring 1 is compact and has no looseness after hitting, so that the expected compact effect is achieved.

Fifthly, final assembly and verification (as shown in figure 5)

1. Assembly

1) The top loading bearing section 7 and the extension protection section 9 are tightly connected through screw threads, so that no looseness is ensured;

2) the extension protection section 9 and the splitting opening and closing section 4 are welded or are reserved in a partition mode before processing without cutting, and an integral structure is formed;

3) slightly buckling the thinned part at the bottom of the splitting opening and closing section 4 with the tensioning sleeve ring 1 to ensure that the split opening and closing section does not fall off;

4) auxiliary tools such as a matched iron hammer, pipe tongs and the like are prepared;

5) in order to ensure the quality of the extracting device, the whole processes of machine tool machining, threading, welding and assembling are completed by high-grade technicians which are certified to be on duty.

2. Effect verification

After all the assemblies are completed, the on-site core sample of the asphalt concrete core wall is extracted and detected, the extracting device is placed at the bottom of a drilled core sample hole gap, the loading bearing section 7 at the top is knocked by the gravity of an iron hammer, the whole extracting device is found to have slight falling signs at the moment, when the extracting device is knocked to be not fallen (about 10 times), a pipe wrench is used for clamping a stress concave part 8 of the loading bearing section 7, the extracting cylinder is wholly twisted until the extracting cylinder is loosened (generally twisted by about 50 degrees), the whole extracting cylinder is extracted, the core sample of the asphalt concrete core wall is found to be integrally extracted along with the extracting cylinder, and the bottom tensioning sleeve ring 1 firmly hoops the bottom of the core sample. At the moment, the square tube is matched with the hammer to lightly knock the tensioning lantern ring 1 to retreat from the splitting opening and closing section 4, the extraction cylinder is erected, and the core sample naturally slides out.

The whole condition of core appearance is examined after the core appearance roll-off, and inside the core appearance was whole all was in and draws a section of thick bamboo, the bottom was cramped by tensioning lantern ring 1 and is twisted fracture during the torsion, and the fracture mouth flushes, and above part is not influenced by the torsional force, and at section of thick bamboo wall inboard protection, whole complete not damaged, and the availability is higher. The time of the whole set of extraction steps is 90s, and the extraction operation can be independently finished by one person. The method is simple and convenient to operate, rapid in extraction, capable of achieving the purposes of saving labor and labor, protecting the core sample and saving cost, and meanwhile, manually operated in the whole process, free of condition limitation, safe and environment-friendly.

Claims (6)

1. A rapid extraction device for an asphalt concrete core sample is characterized by comprising a fastening component and a working component which are matched with each other; the fastening member is a tension collar (1) having a first cone end (2); the structure of the working component is as follows: including splitting section of opening and shutting (4), splitting section of opening and shutting (4) have a plurality of splits crack (3) along its vertical even division, have second cone end (5) at splitting section of opening and shutting (4) lower extreme, splitting section of opening and shutting (4) upper portion is fixed with loading bearing section (7).

2. The asphalt concrete core sample rapid extraction device according to claim 1, wherein the split crack (3) is 3.

3. The asphalt concrete core sample rapid extraction device according to claim 1, characterized in that a notch (6) is further formed at the lower end of the split open-close section (4).

4. The asphalt concrete core sample rapid extraction device according to claim 1, wherein an extension protection section (9) is provided, and the extension protection section (9) is fixed between the splitting open-close section (4) and the loading bearing section (7).

5. The asphalt concrete core sample rapid extraction device according to claim 4, wherein the load bearing section (7) is tightly fixed with the extended protection section (9) through screw threads.

6. The asphalt concrete core sample rapid extraction device according to claim 1, wherein the loading bearing section (7) is provided with a stress concave part (8).

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