CN219672598U - Automatic coring bit device for pavement core drilling machine - Google Patents
Automatic coring bit device for pavement core drilling machine Download PDFInfo
- Publication number
- CN219672598U CN219672598U CN202321562072.6U CN202321562072U CN219672598U CN 219672598 U CN219672598 U CN 219672598U CN 202321562072 U CN202321562072 U CN 202321562072U CN 219672598 U CN219672598 U CN 219672598U
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- annular air
- telescopic column
- air pressure
- flexible post
- drilling machine
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- 238000005553 drilling Methods 0.000 title claims abstract description 20
- 238000007789 sealing Methods 0.000 claims description 21
- 238000005070 sampling Methods 0.000 abstract description 4
- 238000001514 detection method Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 210000004907 gland Anatomy 0.000 description 2
- 239000012945 sealing adhesive Substances 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 239000002390 adhesive tape Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
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Abstract
The utility model discloses an automatic coring bit device for a pavement core drilling machine, which comprises a bit main body, wherein an annular air pressure jack shell is arranged at the middle position of the top end inside the bit main body. Through being provided with annular air jack casing, the relief valve, the check valve, first flexible post festival, second flexible post festival and liftout plate and reset spring, it is inside aerifing to annular air jack casing to connect the pump through the check valve, close the relief valve simultaneously, increase the road surface core sample that promotes boring in the drill bit main part along with the inside atmospheric pressure of air jack casing and descend of first flexible post festival and second flexible post festival and liftout plate, open the relief valve after taking out the core sample and reduce the inside atmospheric pressure of annular air jack casing, can return with this can automatic ejecting core sample of pulling through reset spring pulling first flexible post festival and second flexible post festival and collect and reset, ensure the integrality of core sample and the safety of drill bit, the core sampling rate of boring machine on road surface has been showing to have been improved.
Description
Technical Field
The utility model relates to the technical field of road engineering experimental equipment, in particular to an automatic coring bit device for a pavement core drilling machine.
Background
In the detection process of the pavement, a core drill is required to drill core samples of each structural layer of the pavement, and corresponding performance tests are carried out to detect the pavement construction quality. In the process of core drilling and sampling, core samples often exist in the core drilling machine, and the core samples cannot be taken out from the drill bit of the core drilling machine. In this case, the field staff often uses other objects to strike the drill bit, so that the core sample slides out of the drill bit under the action of vibration, and the core sample is taken out;
however, this sampling scheme can be unavoidable at practical application's in-process and cause the deformation of drill bit, influences drill bit life, in addition, too big striking still can cause the damage of core sample, leads to the indoor test result of core sample to have the deviation with the reality, influences pavement detection result, has the technical problem that can not convenient and fast and the safe efficient takes out core sample from the drill bit.
Disclosure of Invention
In order to overcome the defects of the prior art, the utility model provides an automatic coring bit device for a pavement core drilling machine, which can solve the technical problems that deformation of a bit can be caused, the service life of the bit is influenced, in addition, the excessive knocking can cause damage to a core sample, the deviation between an indoor test result of the core sample and the actual situation exists, the pavement detection result is influenced, and the core sample cannot be taken out from the bit conveniently, rapidly, safely and efficiently.
In order to solve the technical problems, the utility model provides the following technical scheme: the utility model provides an automatic coring bit device for road surface core drilling machine, includes the drill bit main part, the intermediate position department on the inside top of drill bit main part is provided with annular air pressure jack casing, the inside of annular air pressure jack casing is provided with first flexible post section, the inside of first flexible post section is provided with the flexible post section of second, the bottom of the flexible post section of second is provided with the ejector plate, one side grafting on annular air pressure jack casing top has the check valve, the opposite side grafting on annular air pressure jack casing top has the relief valve, the inside top of annular air pressure jack casing evenly is provided with reset spring.
As a preferable technical scheme of the utility model, the bottom end of the annular air pressure jack shell is provided with a second sealing sleeve, the bottom end of the first telescopic column section is provided with a first sealing sleeve, the top end of the outer part of the first telescopic column section is provided with a first limiting ring, and the top end of the outer part of the second telescopic column section is provided with a second limiting ring.
As a preferable technical scheme of the utility model, the check valve and the pressure relief valve are symmetrically arranged at the top end of the annular air pressure jack shell, and are respectively communicated with the interior of the annular air pressure jack shell.
As a preferable technical scheme of the utility model, the ejector plate is round, sealing rubber strips are arranged on the side edges of the ejector plate, and the outer sides of the sealing rubber strips are attached to the inner side wall of the drill bit main body.
As a preferable technical scheme of the utility model, the bottom end of the first telescopic column section penetrates through the inside of the second sealing sleeve, and the bottom end of the second telescopic column section penetrates through the inside of the first sealing sleeve.
As a preferable technical scheme of the utility model, four groups of return springs are arranged, the bottom ends of the return springs are fixedly connected with the bottom ends of the inside of the second telescopic column section respectively, and the return springs are distributed in an annular shape between the top end of the inside of the annular air jack shell and the bottom end of the inside of the second telescopic column section.
Compared with the prior art, the utility model has the following beneficial effects:
through being provided with annular air jack casing, the relief valve, the check valve, first flexible post festival, second flexible post festival and liftout plate and reset spring, the inside inflation of annular air jack casing through the external pump of check valve when using, and close the relief valve when inflating, increase and overcome reset spring pulling force along with the pneumatic pressure in the annular air jack casing of inflatable, thereby promote first flexible post festival and second flexible post festival and simultaneously by the promotion decline, and seal stable processing through first seal cover and second seal cover, simultaneously promote the liftout plate and push away the road surface core appearance that bores in the drill bit main part, open the relief valve after taking out the core appearance and reduce the inside atmospheric pressure of annular air jack casing, can return through reset spring pulling force pulling first flexible post festival and second flexible post festival, thereby make annular air jack need not exert external force, can reset by oneself, thereby reached the purpose that can high-efficient swift automatic release core appearance is collected, need not the drill bit, ensure the complete core sample rate of core appearance and drill bit has been showing and improved.
Drawings
FIG. 1 is a schematic cross-sectional elevation view of the present utility model;
FIG. 2 is a schematic top view partially in cross-section of the annular air jack housing of the present utility model;
FIG. 3 is an enlarged schematic view of the structure of FIG. 1A according to the present utility model;
fig. 4 is a schematic bottom view of the bit body according to the present utility model.
Wherein: 1. a bit body; 2. an ejector plate; 3. a first telescoping post joint; 4. an annular air pressure jack housing; 5. a pressure release valve; 6. a one-way valve; 7. a return spring; 8. a first confinement ring; 9. a first gland; 10. the second telescopic column section; 11. a second confinement ring; 12. a second gland; 13. and (5) sealing the adhesive tape.
Detailed Description
In order that the manner in which the above recited features, objects and advantages of the present utility model are obtained will become readily apparent, a more particular description of the utility model will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings. Based on the examples in the embodiments, those skilled in the art can obtain other examples without making any inventive effort, which fall within the scope of the utility model. The experimental methods in the following examples are conventional methods unless otherwise specified, and materials, reagents, etc. used in the following examples are commercially available unless otherwise specified.
Examples
Referring to fig. 1-4, the present utility model provides an automatic coring bit device for a pavement core drilling machine, comprising a bit body 1, an annular air pressure jack housing 4 is provided at a middle position of an inner top end of the bit body 1, a first telescopic column section 3 is provided at an inner side of the annular air pressure jack housing 4, a second sealing sleeve 12 is provided at a bottom end of the annular air pressure jack housing 4, a first sealing sleeve 9 is provided at a bottom end of the first telescopic column section 3, a second telescopic column section 10 is provided at an inner side of the first telescopic column section 3, a bottom end of the first telescopic column section 3 penetrates through an inner side of the second sealing sleeve 12, a bottom end of the second telescopic column section 10 penetrates through an inner side of the first sealing sleeve 9, a first limiting ring 8 is provided at an outer top end of the first telescopic column section 3, a second limiting ring 11 is provided at an outer top end of the second telescopic column section 10, a circular ejector plate 2 is provided at a bottom end of the second telescopic column section 10, the side of the ejector plate 2 is provided with a sealing adhesive tape 13, the outer side of the sealing adhesive tape 13 is attached to the inner side wall of the drill bit body 1, one side of the top end of the annular air pressure jack shell 4 is inserted with a one-way valve 6, the other side of the top end of the annular air pressure jack shell 4 is inserted with a pressure release valve 5, the one-way valve 6 and the pressure release valve 5 are symmetrically arranged at the top end of the annular air pressure jack shell 4, the one-way valve 6 and the pressure release valve 5 are respectively communicated with the inner part of the annular air pressure jack shell 4, the annular air pressure jack shell 4 is inflated through the one-way valve 6 by an external inflation pump to increase the inner air pressure, thereby pushing the first telescopic column section 3 and the second telescopic column section 10 to descend and pushing the ejector plate 2 to eject the drilled pavement core sample out of the drill bit body 1, the top end inside the annular air pressure jack shell 4 is uniformly provided with a reset spring 7, the four groups of reset springs 7 are arranged, the bottom ends of the reset springs 7 are fixedly connected with the bottom ends inside the second telescopic column sections 10 respectively, the reset springs 7 are annularly distributed between the top ends inside the annular air jack shell 4 and the bottom ends inside the second telescopic column sections 10, the first telescopic column sections 3 and the second telescopic column sections 10 can be pulled back to reset by using pulling force after the pressure relief valve 5 is relieved through the reset springs 7, so that the annular air jack can reset automatically without applying external force, the purpose of automatically pushing out core samples to collect is achieved, a drill bit is not required to be manually knocked, the integrity of the core samples and the safety of the drill bit are ensured, and the core drilling sampling rate of a pavement core drilling machine is remarkably improved;
when the drill bit is used, the annular air jack shell 4 is inflated through the external air pump of the one-way valve 6, the pressure release valve 5 is closed at the same time when the air is inflated, the air pressure in the annular air jack shell 4 is increased and the tension of the return spring 7 is overcome along with the inflation, so that the first telescopic column section 3 and the second telescopic column section 10 are pushed to descend simultaneously, the sealing stabilization treatment is carried out through the first sealing sleeve 9 and the second sealing sleeve 12, the ejector plate 2 is pushed to eject a pavement core sample drilled in the drill bit body 1, the pressure release valve 5 is opened to reduce the air pressure in the annular air jack shell 4 after the core sample is taken out, and the first telescopic column section 3 and the second telescopic column section 10 can be pulled to reset through the tension of the return spring 7;
the specific working principle is as follows:
when the automatic coring bit device is used, after the core drilling work is finished, the bit main body 1 is lifted and fixed from a drilled hole, then a portable inflator pump is used for accessing the one-way valve 6, meanwhile, the pressure release valve 5 is closed, the inflation is started to enable the air pressure in the annular air pressure jack shell 4 to be increased, the tension effect of the return spring 7 is overcome, the first telescopic column section 3 and the second telescopic column section 10 are pushed to descend simultaneously through the air pressure pushing, the sealing stabilization treatment is carried out through the first sealing sleeve 9 and the second sealing sleeve 12, and meanwhile, the first telescopic column section 3 and the second telescopic column section 10 are limited and stabilized through the first limiting ring 8 and the second limiting ring 11, so that the steady downward pushing ejector plate 2 ejects a drilled core sample from the inside of the bit main body 1; after the core sample is completely ejected from the drill bit main body 1, stopping inflating, opening the pressure relief valve 5, enabling the air pressure in the annular air pressure jack shell 4 to be reduced, enabling the tension of the reset spring 7 to be larger than the air pressure acting force, enabling the first telescopic column section 3 and the second telescopic column section 10 to start resetting, and when the air pressure is reduced to the atmospheric pressure, completing resetting work, closing the pressure relief valve 5 and preparing for next core drilling work.
In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.
The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the above-described embodiments, and that the above-described embodiments and descriptions are only preferred embodiments of the present utility model, and are not intended to limit the utility model, and that various changes and modifications may be made therein without departing from the spirit and scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (6)
1. An automatic coring bit device for a pavement core drilling machine, which comprises a bit main body (1), and is characterized in that: the drill bit comprises a drill bit body (1), wherein an annular air pressure jack shell (4) is arranged at the middle position of the top end of the drill bit body (1), a first telescopic column joint (3) is arranged in the annular air pressure jack shell (4), a second telescopic column joint (10) is arranged in the first telescopic column joint (3), an ejector plate (2) is arranged at the bottom end of the second telescopic column joint (10), a one-way valve (6) is inserted into one side of the top end of the annular air pressure jack shell (4), a pressure release valve (5) is inserted into the other side of the top end of the annular air pressure jack shell (4), and reset springs (7) are uniformly arranged at the top end of the inner part of the annular air pressure jack shell (4).
2. An automated coring bit assembly for a pavement core drilling machine as set forth in claim 1 wherein: the bottom of annular pneumatic jack casing (4) is provided with second seal cover (12), the bottom of first flexible post section (3) is provided with first seal cover (9), the outside top of first flexible post section (3) is provided with first restriction ring (8), the outside top of second flexible post section (10) is provided with second restriction ring (11).
3. An automated coring bit assembly for a pavement core drilling machine as set forth in claim 1 wherein: the one-way valve (6) and the pressure relief valve (5) are symmetrically arranged at the top end of the annular air pressure jack shell (4), and the one-way valve (6) and the pressure relief valve (5) are respectively communicated with the inside of the annular air pressure jack shell (4).
4. An automated coring bit assembly for a pavement core drilling machine as set forth in claim 1 wherein: the ejector plate (2) is circular, sealing rubber strips (13) are arranged on the side edges of the ejector plate (2), and the outer sides of the sealing rubber strips (13) are attached to the inner side wall of the drill bit main body (1).
5. An automated coring bit assembly for a pavement core drilling machine as set forth in claim 2 wherein: the bottom end of the first telescopic column section (3) penetrates through the inside of the second sealing sleeve (12), and the bottom end of the second telescopic column section (10) penetrates through the inside of the first sealing sleeve (9).
6. An automated coring bit assembly for a pavement core drilling machine as set forth in claim 1 wherein: the four groups of reset springs (7) are arranged, the bottom ends of the reset springs (7) are fixedly connected with the bottom ends of the inside of the second telescopic column section (10) respectively, and the reset springs (7) are distributed in an annular mode between the top end of the inside of the annular air jack shell (4) and the bottom end of the inside of the second telescopic column section (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321562072.6U CN219672598U (en) | 2023-06-19 | 2023-06-19 | Automatic coring bit device for pavement core drilling machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321562072.6U CN219672598U (en) | 2023-06-19 | 2023-06-19 | Automatic coring bit device for pavement core drilling machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219672598U true CN219672598U (en) | 2023-09-12 |
Family
ID=87892436
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321562072.6U Active CN219672598U (en) | 2023-06-19 | 2023-06-19 | Automatic coring bit device for pavement core drilling machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219672598U (en) |
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2023
- 2023-06-19 CN CN202321562072.6U patent/CN219672598U/en active Active
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