CN108627362B - Concrete coring method intensity inspection coring device - Google Patents
Concrete coring method intensity inspection coring device Download PDFInfo
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- CN108627362B CN108627362B CN201810438404.7A CN201810438404A CN108627362B CN 108627362 B CN108627362 B CN 108627362B CN 201810438404 A CN201810438404 A CN 201810438404A CN 108627362 B CN108627362 B CN 108627362B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/04—Devices for withdrawing samples in the solid state, e.g. by cutting
- G01N1/08—Devices for withdrawing samples in the solid state, e.g. by cutting involving an extracting tool, e.g. core bit
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention relates to a strength testing and coring device for a concrete coring method, which comprises a base (1), a vertical rod (2) arranged on the base (1), a rack (3) connected to the side surface of the vertical rod (2) in parallel, a first motor shell (4) sleeved on the peripheries of the vertical rod (2) and the rack (3), a first rotating motor and a gear which are arranged in the first motor shell (4), a second rotating motor (5) connected with the outer side wall of the first motor shell (4), and a drill bit (6) in transmission connection with the lower part of a rotating shaft at the bottom of the second rotating motor (5). According to the invention, the strip-shaped first groove and the strip-shaped second groove are arranged on the inner periphery and the outer periphery of the core taking pipe and the drill bit body of the drill bit, so that water entering from the water inlet of the joint can enter the drill bit body along the first groove to be cooled and carry out concrete particle discharge from the second groove, the core taking success rate is improved, the test time is shortened, and the detection cost is reduced.
Description
Technical Field
The invention relates to the technical field of building detection, in particular to a concrete coring method strength inspection coring device.
Background
The strength grade of the concrete refers to the compressive strength of the concrete, and a direct test method or a splitting test method can be adopted for testing. The direct test method comprises a pulling-out method, and can refer to the technical specification of detecting the concrete strength by a CECS 69-2011 pulling-out method and the GB/T50107-2010 concrete strength test evaluation standard; the splitting test method can refer to the technical specification of detecting the concrete strength by the JGJT 384-. The 10.1.2 regulation of "GB 50204-2015 acceptance standard for construction quality of concrete structure engineering: when the strength of the maintenance test piece under the same condition is not obtained or is not in accordance with the requirement, the test can be carried out by adopting a rebound-coring method. The prior patent technology also has the concrete strength test.
Chinese patent document with publication number CN206787878U discloses an additive concrete strength detection device, which comprises a bottom plate, wherein a rotating plate is rotatably mounted at the upper end of the middle part of the bottom plate, through holes are vertically arranged on the left side of the middle part of the bottom plate and the left and right sides of the center of the rotating plate in a penetrating manner, a rotating rod is vertically arranged at the middle part of the upper end of the rotating plate, a detection block and a balance seat are respectively arranged on the left and right sides of the lower surface of the bottom plate, a detection hole is vertically arranged in the middle part of the detection block in a penetrating manner, brackets are respectively arranged on the left and right sides of the middle part of the upper surface of the rotating plate, an additive injector is clamped in the middle part of the bracket on the left side, a concrete strength detector is clamped in the middle part of the bracket on the right side, hemispherical grooves are respectively arranged in the middle parts of the side walls on the left and right, the operation is simple and the measurement is accurate.
Chinese patent document No. CN206787925U discloses a drill core type concrete strength detection device, which comprises a concave plate, wherein the inner side of the concave plate is provided with a measuring block, the left side and the right side of the upper end of the measuring block are respectively provided with a slide block, the upper side and the lower side of the side wall of the slide block are respectively horizontally provided with a through hole, a slide rod is arranged in the through holes in a penetrating and sliding way, the left end and the right end of the slide rod are respectively fixedly connected with the left inner wall and the right inner wall of the concave plate, the side wall of the slide rod is provided with a limiting disc near the inner wall end of the concave plate, the lower surface of the measuring block is provided with a marking plate, the surface of the marking plate is provided with a displacement graduating gauge, the right end of the marking plate is provided with a striking block, the lower part of the left side wall of the striking block is provided with a pressure sensor, the constant-pressure constant-speed impact, the monitoring operation is simplified, and the labor intensity of operators is reduced.
When the strength of concrete is measured by the existing coring method, the cored sample is easy to have the defects of cracks, gaps and the like, so that the test success rate is reduced, the test time is prolonged, and the detection cost is increased.
Disclosure of Invention
The invention aims to provide a strength testing coring device for a concrete coring method, which can effectively carry out water cooling on a drill bit, improve the quality of a core sample test piece and improve the detection success rate.
In order to achieve the purpose, the invention provides a concrete coring method strength inspection coring device, which comprises a base, a vertical rod arranged on the base, a rack connected to the side surface of the vertical rod in parallel, a first motor shell sleeved on the periphery of the vertical rod and the rack, a first rotating motor and a gear arranged in the first motor shell, a second rotating motor connected with the outer side wall of the first motor shell, and a drill bit in transmission connection with the lower part of a rotating shaft at the bottom of the second rotating motor, wherein the gear is coaxially sleeved on the periphery of the rotating shaft of the first rotating motor and is meshed with the rack so that the first rotating motor drives the gear to rotate and further enables the first motor shell to move up and down along the vertical rod, the drill bit comprises a joint, a coring pipe and a drill bit body which are coaxially and detachably connected up and down, the joint is coaxially and in transmission connection with the rotating shaft of the second rotating motor, the joint is provided with a water inlet, the peripheries of the coring pipe and the drill bit body are provided with a plurality of first grooves extending along the vertical direction, the inner peripheries of the coring pipe and the drill bit body are provided with a plurality of second grooves extending along the vertical direction, and the first grooves and the second grooves are arranged at equal intervals.
Optionally, the bottom end of the drill bit body is provided with drill teeth at intervals along the circumferential direction, and the first groove and the second groove both extend to the intervals of the drill teeth.
Optionally, the bit body is a synthetic diamond.
Optionally, the device further comprises a water pump and a bucket, wherein a water inlet of the water pump is communicated with the bucket through a water inlet pipe, and a water outlet of the water pump is communicated with the water inlet through a water outlet pipe.
Optionally, the device includes a bearing and an upper cover, an inner periphery of the bearing is fixed with an outer periphery of the joint, an outer periphery of the bearing is fixed with an outer periphery of the upper cover, and a first opening communicated with the water outlet pipe and a second opening used for passing through a rotating shaft of the second rotating motor are arranged in the upper cover.
Optionally, the inner diameter of the core taking pipe is 100mm or 75 mm.
Optionally, the apparatus further comprises a reinforcement bar detector.
Optionally, the device further comprises a splash guard sleeve for sleeving the drill bit.
The invention has the following advantages:
the inventor finds that one reason why the core sample test piece has defects in the existing core drilling and sampling process is that the core sample test piece and the generated concrete particles generate secondary collision at high speed and high temperature, so that the probability of crack and gap generation of the core sample test piece is increased, and the existing water cooling method is difficult to cool the highest temperature position of the end part of the drill bit and only can play a role in reducing dust rising. According to the invention, the strip-shaped first groove and the strip-shaped second groove are arranged on the inner periphery and the outer periphery of the core taking pipe and the drill bit body of the drill bit, so that water entering from the water inlet of the joint can enter the drill bit body along the first groove to be cooled and carry out concrete particle discharge from the second groove, the core taking success rate is improved, the test time is shortened, and the detection cost is reduced.
Drawings
FIG. 1 is a schematic structural diagram of one embodiment of the apparatus of the present invention.
Fig. 2 is a schematic structural diagram of one embodiment of the drill bit of the present invention.
Figure 3 is a schematic diagram of the structure of one embodiment of the coring tube and bit body of the present invention.
Fig. 4 is a schematic structural diagram of another embodiment of the device of the present invention.
Detailed Description
The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
Unless otherwise specified, the vertical direction in the present invention refers to the vertical direction in the actual use of the device, and specifically, refer to the direction of the drawing in fig. 1.
As shown in figures 1-3, the invention provides a concrete coring method strength inspection coring device, which comprises a base 1, a vertical rod 2 arranged on the base 1, a rack 3 connected to the side surface of the vertical rod 2 in parallel, a first motor shell 4 sleeved on the peripheries of the vertical rod 2 and the rack 3, a first rotating motor and a gear arranged in the first motor shell 4, a second rotating motor 5 connected with the outer side wall of the first motor shell 4, and a drill bit 6 connected below a rotating shaft at the bottom of the second rotating motor 5 in a transmission manner, wherein the gear is coaxially sleeved on the periphery of the rotating shaft of the first rotating motor and is meshed with the rack 3 so that the first rotating motor drives the gear to rotate and further enables the first motor shell 4 to move up and down along the vertical rod 2, and the drill bit 6 comprises a joint 61, a joint which is coaxially and detachably connected up and down, and a joint which is detachably, Core tube 62 and bit body 63, connect 61 with the coaxial and transmission connection of the rotation axis of second rotating electrical machines 5, be provided with water inlet 611 on the joint 61, the periphery of core tube 62 and bit body 63 is provided with a plurality of first recesses 631 that extend along vertical direction, the inner periphery of core tube 62 and bit body 63 is provided with a plurality of second recesses 632 that extend along vertical direction, the equal interval setting of a plurality of first recesses 631 and a plurality of second recesses 632. The inventor finds that one reason why the core sample test piece has defects in the existing core drilling and sampling process is that the core sample test piece and the generated concrete particles generate secondary collision at high speed and high temperature, so that the probability of crack and gap generation of the core sample test piece is increased, and the existing water cooling method is difficult to cool the highest temperature position of the end part of the drill bit and only can play a role in reducing dust rising. According to the invention, the strip-shaped first groove and the strip-shaped second groove are arranged in the core taking pipe of the drill bit and in and on the periphery of the drill bit body, so that water entering from the water inlet of the joint can enter the drill bit body along the first groove to be cooled and can carry concrete particles out of the first groove and flow out of the second groove, the core taking success rate is improved, the test time is shortened, and the detection cost is reduced.
In order to facilitate drilling into the concrete layer and cooling, as shown in fig. 3, the bottom end of the bit body 63 is provided with drill teeth 633 at intervals along the circumferential direction, and the first groove 631 and the second groove 632 both extend to the intervals of the drill teeth 633, so that water can enter between the drill teeth 633 along the first groove and the generated concrete particles and debris can flow out of the second groove along with the water. The bit body 63 may be made of synthetic diamond to have good hardness.
In order to facilitate the water inlet of the drill bit, as shown in fig. 1, the device may further include a water pump 7 and a water tank 8, the water inlet of the water pump 7 is in fluid communication with the water tank 8 through a water inlet pipe 81, and the water outlet of the water pump 7 is in fluid communication with the water inlet 611 through a water outlet pipe 71. The water pumped into the bit connector 61 by the water pump will flow down the inner wall of the bit and into the second recess under the influence of the centrifugal force generated by the rotation of the bit.
In order to facilitate the drill bit not to affect the water inlet of the water pump when rotating, as shown in fig. 2, the device may include a bearing 91 and an upper cover 92, an inner circumference of the bearing 91 may be fixed to an outer circumference of the joint 61, an outer circumference of the bearing 91 may be fixed to an outer circumference of the upper cover 92, and a first opening 93 for communicating with the water outlet pipe 71 and a second opening 94 for passing through the rotating shaft of the second rotating electric machine 5 are opened in the upper cover 92. Therefore, when the joint drives the bearing to rotate, the upper cover can be still, and water can be conveniently fed into the water inlet pipe.
In one embodiment, the coring pipe 62 has an inner diameter of 100mm or 75 mm.
In order to prevent core taking, a core sample test piece with a steel bar is taken, the device can also comprise a steel bar detector, and the taken core sample test piece can be detected by a tensile testing device in order to detect the strength of the core sample test piece conveniently.
Since water may be splashed onto the architectural veneer layer during the rotation of the drill bit according to the present invention, as shown in fig. 4, the apparatus may further comprise a splash guard 10 for fitting around the outer circumference of the drill bit 6, so that the water splashed by the rotation can be effectively blocked by the splash guard, which is opened up and down for fitting outside the bit, and preferably has a length longer than that of the drill bit 2/3.
Although the invention has been described in detail above with reference to a general description and specific examples, it will be apparent to one skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.
Claims (8)
1. The device is characterized by comprising a base (1), a vertical rod (2) arranged on the base (1), a rack (3) connected to the side surface of the vertical rod (2) in parallel, a first motor shell (4) sleeved on the peripheries of the vertical rod (2) and the rack (3), a first rotating motor and a gear arranged in the first motor shell (4), a second rotating motor (5) connected with the outer side wall of the first motor shell (4), and a drill bit (6) connected below the bottom rotating shaft of the second rotating motor (5) in a transmission manner, wherein the gear is coaxially sleeved on the periphery of the rotating shaft of the first rotating motor, and the gear is meshed with the rack (3) so that the first rotating motor drives the gear to rotate and further enables the first motor shell (4) to move up and down along the vertical rod (2), the drill bit (6) comprises a joint (61), a core taking pipe (62) and a drill bit body (63) which are coaxial and detachably connected up and down, the joint (61) is coaxial with and in transmission connection with a rotating shaft of the second rotating motor (5), a water inlet (611) is arranged on the joint (61), a plurality of first grooves (631) extending along the vertical direction are arranged on the peripheries of the core taking pipe (62) and the drill bit body (63), a plurality of second grooves (632) extending along the vertical direction are formed in the inner peripheries of the core taking pipe (62) and the drill bit body (63), so that water entering from the water inlet (611) of the joint (61) can enter the drill bit body (63) along the first grooves (631) to be cooled and carry concrete particles out of the second grooves (632), the first grooves (631) and the second grooves (632) are arranged at intervals.
2. The apparatus of claim 1, wherein the bottom end of the bit body (63) is circumferentially spaced with drill teeth (633), and the first and second grooves (631, 632) each extend to the spacing of the drill teeth (633).
3. The device of claim 1, wherein the bit body (63) is an artificial diamond.
4. The device according to claim 1, further comprising a water pump (7) and a water tank (8), wherein a water inlet of the water pump (7) is in fluid communication with the water tank (8) through a water inlet pipe (81), and a water outlet of the water pump (7) is in fluid communication with the water inlet (611) through a water outlet pipe (71).
5. The device according to claim 1, characterized in that it comprises a bearing (91) and an upper cover (92), the inner circumference of the bearing (91) is fixed with the outer circumference of the joint (61), the outer circumference of the bearing (91) is fixed with the outer circumference of the upper cover (92), and a first opening (93) communicating with the water outlet pipe (71) and a second opening (94) for passing through the rotating shaft of the second rotating motor (5) are opened in the upper cover (92).
6. The device according to claim 1, characterized in that the inner diameter of the coring tube (62) is 100mm or 75 mm.
7. The apparatus of claim 1, further comprising a rebar detector.
8. The device according to claim 1, characterized in that it further comprises an anti-splash skirt (10) for fitting around the drill bit (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810438404.7A CN108627362B (en) | 2018-05-09 | 2018-05-09 | Concrete coring method intensity inspection coring device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810438404.7A CN108627362B (en) | 2018-05-09 | 2018-05-09 | Concrete coring method intensity inspection coring device |
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| Publication Number | Publication Date |
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| CN108627362A CN108627362A (en) | 2018-10-09 |
| CN108627362B true CN108627362B (en) | 2020-05-22 |
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| CN201810438404.7A Active CN108627362B (en) | 2018-05-09 | 2018-05-09 | Concrete coring method intensity inspection coring device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109085014B (en) * | 2018-10-27 | 2021-02-23 | 江苏中煤地质工程研究院有限公司 | High-efficiency rock soil sampling device and sampling method |
| CN109506980A (en) * | 2018-12-30 | 2019-03-22 | 山西省交通科学研究院 | A kind of concrete test block coring method |
| CN110346172A (en) * | 2019-08-07 | 2019-10-18 | 徐州工业职业技术学院 | A kind of concrete drill core sampling system |
| CN112030930A (en) * | 2020-08-04 | 2020-12-04 | 李�远 | Foundation engineering bores experimental detection device of core |
| CN112622066A (en) * | 2020-12-30 | 2021-04-09 | 天皓建筑科技有限公司 | High-precision coring bit |
| CN113008612A (en) * | 2021-03-08 | 2021-06-22 | 安徽理工大学 | A drilling coring device for early age concrete |
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| CN206696015U (en) * | 2017-05-22 | 2017-12-01 | 安徽聚力测控技术有限公司 | The water jet coring tube of cutter head |
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| JP2008248553A (en) * | 2007-03-30 | 2008-10-16 | Kyushu Dengi Kaihatsu Kk | Method of sampling core |
| CN202305261U (en) * | 2011-09-16 | 2012-07-04 | 长安大学 | Concrete easily obtained core sample drilling and taking machine |
| CN203658090U (en) * | 2013-12-18 | 2014-06-18 | 河南省高远公路养护技术有限公司 | Bituminous concrete sample coring device |
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| CN108627362A (en) | 2018-10-09 |
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