CN109187592B - Imaging system for internal structure of wood - Google Patents
Imaging system for internal structure of wood Download PDFInfo
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- CN109187592B CN109187592B CN201810876401.1A CN201810876401A CN109187592B CN 109187592 B CN109187592 B CN 109187592B CN 201810876401 A CN201810876401 A CN 201810876401A CN 109187592 B CN109187592 B CN 109187592B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
- G01N23/02—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material
- G01N23/04—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and forming images of the material
Abstract
The invention discloses a wood internal structure imaging system, and belongs to the field of wood detection. It includes year thing support car, carries thing unit, X ray emission unit, X ray receiving element and two-way portable slip table, wherein: the carrying unit is arranged in the carrying support vehicle and comprises a carrying disc and a rotary lifting mechanism, and the rotary lifting mechanism is connected with the carrying disc and drives the carrying disc to rotate and lift; the bidirectional movable sliding table is arranged on the upper portion of the object carrying support vehicle, the X-ray emitting unit and the X-ray receiving unit are arranged on the bidirectional movable sliding table and located on two sides of the object carrying unit, and the X-ray emitting unit and/or the X-ray receiving unit can slide along the bidirectional movable sliding table. The invention can reconstruct three-view images of the detected wood with different sizes and automatically detect the internal structural characteristics of the wood.
Description
Technical Field
The invention relates to the field of wood detection, in particular to a wood internal structure imaging system.
Background
Nondestructive detection of wood is a nondestructive detection technique for wood. At present, a designed and formed timber nondestructive testing system has appeared at home and abroad, for example, a timber nondestructive testing device with any angle real-time imaging mentioned in patent CN201410076803, but after the timber nondestructive testing device scans and detects timber, only two-dimensional images can be presented, and the detection of different parts of the timber is realized by a method of lifting a ray emitter and a ray receiver, so as to reconstruct internal images after the timber is scanned, thereby achieving the purpose of nondestructive testing of the timber. The nondestructive wood detection device has certain limitation, and can only detect wood with small radius due to small design size of the device, and the device can not move the position and the like as required.
Disclosure of Invention
In order to solve the technical problem, the invention provides a wood internal structure imaging system, which can reconstruct three-view images of detected wood with different sizes and automatically detect the internal structure characteristics of the wood.
The technical scheme provided by the invention is as follows:
the utility model provides a timber inner structure imaging system, is including carrying thing support car, carrying thing unit, X ray emission unit, X ray receiving element and two-way portable slip table, wherein:
the carrying unit is arranged in the carrying support vehicle and comprises a carrying disc and a rotary lifting mechanism, and the rotary lifting mechanism is connected with the carrying disc and drives the carrying disc to rotate and lift;
the bidirectional movable sliding table is arranged on the upper portion of the object carrying support vehicle, the X-ray emitting unit and the X-ray receiving unit are arranged on the bidirectional movable sliding table and located on two sides of the object carrying unit, and the X-ray emitting unit and/or the X-ray receiving unit can slide along the bidirectional movable sliding table.
Furthermore, the bidirectional movable sliding table comprises two parallel horizontal straight guide rails and two C-shaped workpieces; two sliding blocks are respectively arranged at two ends of the C-shaped workpiece, the sliding blocks are clamped on the horizontal straight guide rail and can slide along the horizontal straight guide rail, and locking devices are arranged on the sliding blocks; one C-shaped workpiece is connected with the X-ray transmitting unit through an X-ray transmitter support, and the other C-shaped workpiece is connected with the X-ray receiving unit through an X-ray receiver support.
Furthermore, the middle part of at least one C-shaped workpiece is connected with a threaded sleeve through a connecting rod, the threaded sleeve is sleeved on a first screw rod, and the first screw rod is connected with a motor.
Furthermore, the motor is connected with a first speed reducer, the first speed reducer is connected with the first screw rod through a first belt, the first speed reducer is arranged on a first speed reducer support, and two ends of the first screw rod are connected with a first sleeve for supporting the first screw rod.
Furthermore, proximity switches and travel switches are arranged at the two ends of the horizontal straight guide rail and the position where the center of the carrying disc is perpendicular to the horizontal straight guide rail.
Furthermore, rotatory elevating system includes rotating electrical machines and elevator motor, the rotating electrical machines is connected through the second belt and is carried the thing disc and drive it is rotatory to carry the thing disc, elevator motor is connected with the second screw rod, the second screw rod with carry thing disc threaded connection, elevator motor passes through the drive of second screw rod it goes up and down to carry the thing disc.
Furthermore, a connecting plate is arranged below the object carrying disc, the rotating motor is connected onto the connecting plate through a second speed reducer, two guide rods are arranged on diagonal lines of the connecting plate, a second sleeve is sleeved outside the guide rods, the second sleeve is connected with the object carrying support vehicle, and a screw rod protective sleeve is sleeved outside the second screw rod.
Furthermore, a sensor support is arranged on one of the guide rods, a proximity switch is arranged at the upper end of the sensor support, a travel switch is arranged at the lower end of the sensor support, and a limit baffle is arranged at the bottom end of one of the guide rods.
Furthermore, a plurality of groups of clamping devices are arranged on the carrying disc, the clamping devices can move along a radial sliding groove, and the carrying disc is provided with 360-degree scribed lines.
Further, it includes the support to carry the thing support car, the support side is provided with the guard plate, the support bottom is provided with the universal wheel.
The invention has the following beneficial effects:
when the imaging system for the internal structure of the wood is used, the wood 600 to be measured is placed on the carrying disc, the X-ray transmitting unit and the X-ray receiving unit are positioned on two sides of the wood to be measured, and the wood to be measured is scanned. Rotate and go up and down to being surveyed timber through rotatory elevating system, realize bearing and being surveyed timber in the same direction as, anticlockwise rotation, functions such as rise, decline detect to being surveyed different positions of timber automatically, and then rebuild the internal image after the timber scans, present three views of being surveyed timber inner structure.
The invention can detect wood with different sizes, when the diameter of the detected wood is less than 100mm, the wood can be regarded as a small-volume detected sample, the distance between the X-ray emitter and the X-ray receiver and the rotation center of the carrying disc is properly reduced, the resolution of a reconstructed image is favorably improved, and when the diameter of the detected wood is larger, the distance between the X-ray emitter and the X-ray receiver and the rotation center of the carrying disc is increased.
In conclusion, the imaging system for the internal structure of the wood can reconstruct three-view images of detected wood with different sizes and automatically detect the internal structure characteristics of the wood.
Drawings
FIG. 1 is a schematic view of a wood interior structure imaging system of the present invention;
figure 2 is a schematic view of a carrier rack vehicle;
FIG. 3 is a schematic view of a carrier disc;
FIGS. 4 and 5 are schematic views of a bidirectional movable sliding table;
FIG. 6 is a schematic view of a carrier unit;
fig. 7 is a schematic view of the connection of the rotary lifting mechanism and the carrier carriage.
Detailed Description
In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments.
The invention provides a wood internal structure imaging system, as shown in fig. 1-7, comprising a carrying support vehicle 100, a carrying unit 200, an X-ray emitting unit 300, an X-ray receiving unit 400 and a bidirectional movable sliding table 500, wherein:
the carrying unit 200 is arranged inside the carrying support vehicle 100, the carrying unit 200 comprises a carrying disc 201 and a rotary lifting mechanism 202, and the rotary lifting mechanism 202 is connected with the carrying disc 201 and drives the carrying disc 201 to rotate and lift;
the two-way movable slide table 500 is provided on the upper portion of the carrier cart 100, the X-ray emitting unit 300 and the X-ray receiving unit 400 are provided on the two-way movable slide table 500 and located on both sides of the carrier unit 100, and the X-ray emitting unit 300 and/or the X-ray receiving unit 400 are slidable along the two-way movable slide table 500.
When the imaging system for the internal structure of the wood is used, the wood 600 to be measured is placed on the carrying disc, the X-ray transmitting unit and the X-ray receiving unit are positioned on two sides of the wood to be measured, and the wood to be measured is scanned. Rotate and go up and down to being surveyed timber through rotatory elevating system, realize bearing and being surveyed timber in the same direction as, anticlockwise rotation, functions such as rise, decline detect to being surveyed different positions of timber automatically, and then rebuild the internal image after the timber scans, present three views of being surveyed timber inner structure.
The invention can detect wood with different sizes, when the diameter of the detected wood is less than 100mm, the wood can be regarded as a small-volume detected sample, the distance between the X-ray emitter and the X-ray receiver and the rotation center of the carrying disc is properly reduced, the resolution of a reconstructed image is favorably improved, and when the diameter of the detected wood is larger, the distance between the X-ray emitter and the X-ray receiver and the rotation center of the carrying disc is increased.
In conclusion, the imaging system for the internal structure of the wood can reconstruct three-view images of detected wood with different sizes and automatically detect the internal structure characteristics of the wood.
As a modification of the present invention, as shown in fig. 4 and 5, the bidirectional movable sliding table 500 includes two parallel horizontal straight guide rails 501 and two C-shaped workpieces 502; two sliding blocks 503 are respectively arranged at two ends of the C-shaped workpiece 502, 4 sliding blocks can ensure that the X-ray emitting unit can slide stably and is not blocked, the X-ray emitting unit can be always kept parallel to the X-ray receiving unit in the moving process, and the X-ray emitting unit is kept stable and does not shake in the detection process.
The sliding block 503 is clamped on the horizontal straight guide rail 501 and can slide along the horizontal straight guide rail 501, and a locking device 504 is arranged on the sliding block 503; after the positions of the X-ray transmitting unit and the X-ray receiving unit are adjusted, the sliding block below the C-shaped workpiece can be locked through the locking device, so that the positions of the X-ray transmitting unit and the X-ray receiving unit are fixed, the position change in the detection process is prevented, the stability of the whole scanning process is improved, and the locking device is preferably a lock catch.
One of the C-shaped workpieces is connected to the X-ray emitting unit 300 by means of an X-ray emitter bracket 505 and the other C-shaped workpiece is connected to the X-ray receiving unit 400 by means of an X-ray receiver bracket 506, preferably by means of screws 507. The distance from the X-ray emitter and the X-ray receiver to the rotation center can be adjusted within a certain range, and the wood with different radiuses can be detected.
Further, the middle part of at least one C-shaped workpiece 502 is connected with a threaded sleeve 509 through a connecting rod 508, the threaded sleeve 509 is sleeved on a first screw rod 510, and the first screw rod 510 is connected with a motor 511. The motor drives the first screw rod to rotate, and then drives the X-ray emission unit to move along the linear guide rail. According to the radius size of the measured wood, the positions of the X-ray transmitting unit and the X-ray receiving unit are automatically adjusted, if the radius of the measured wood is smaller, the distance from the X-ray transmitting unit to the rotation center is properly reduced, and the resolution of the reconstructed image is improved. If the radius of the wood to be detected is larger, the distance from the X-ray emission unit to the center of the carrying disc is properly increased, and the whole coverage of the scanning area of the object to be detected can be realized.
Preferably, the motor 511 is connected to a first reducer 512, a reducer gear 513 of the first reducer 512 is connected to the first screw 510 through a first belt 514, the first reducer 512 is disposed on the first reducer bracket 515, and both ends of the first screw 510 are connected to a first sleeve 516 supporting the first screw 510.
In the invention, the proximity switch 700 and the travel switch 800 are arranged at the two ends of the horizontal straight guide rail 501 and the center of the loading disc 201 vertical to the horizontal straight guide rail 501. The C-shaped workpiece on the X-ray transmitting unit and the X-ray receiving unit is well prevented from being excessively displaced, so that the bidirectional movable horizontal sliding table and the first screw rod are prevented from being damaged.
As another modification of the present invention, as shown in fig. 6 and 7, the rotary lifting mechanism 202 includes a rotary motor 203 and a lifting motor 204, the rotary motor 203 is connected to the carrying disc 201 through a second belt 205 and drives the carrying disc 201 to rotate, the lifting motor 204 is connected to a second screw 206, the second screw 206 is in threaded connection with the carrying disc 201, and the lifting motor 204 drives the carrying disc 201 to lift through the second screw 206. This structure can rotate simultaneously and go up and down to the realization is gone up and down simultaneously and is rotated to being detected timber, has improved detection efficiency, and the lifting accuracy is not more than 0.5mm, and the rotation accuracy is 0.1.
Further, be provided with connecting plate 207 below year thing disc 201, rotating electrical machines 203 connects on connecting plate 207 through second speed reducer 208, be provided with two guide bars 209 on connecting plate 207's the diagonal, guide bar 209 overcoat has second sleeve 210, second sleeve 210 is connected with year thing support car 100, go up and down to rotate and then drive the rotation of second screw rod, through the cooperation with the guide bar, the vertical lift of the thing disc is carried in the control, and the guide bar makes to carry the thing disc and can keep vertical lift or descend, can effectually avoid the lift in-process surveyed timber to take place the shake. The second screw 206 is sheathed with a screw protection sleeve 211.
Preferably, a sensor bracket 212 is arranged on one of the guide rods 209, a proximity switch 213 is arranged at the upper end of the sensor bracket 212, a travel switch 214 is arranged at the lower end of the sensor bracket 212, and a limit baffle 215 is arranged at the bottom end of one of the guide rods 209.
The proximity switch is connected to the PLC controller, carries the thing disc and rises or descends to the limit position, and the program control point detects switching value input high level signal and controls the motor stall promptly. The travel switch is connected to the signal control end of a power supply circuit relay of the servo driver, and under the condition that the proximity switch is out of order, the travel switch is triggered, and the normally closed relay jumps into an open circuit due to receiving a high level signal, so that the motor stops rotating immediately after being powered off.
Through the setting of program control point and travel switch's setting, the effectual stroke of injecing the high accuracy screw rod in the rotatory elevation structure, it is too big to have prevented that the high accuracy screw rod from descending the displacement at rotatory decline in-process, cause the harm of screw rod screw thread and device, it is too big at rotatory ascending displacement to have also prevented simultaneously the high accuracy screw rod, surpass the stroke, thereby take place to be surveyed timber height too high, surpass and be surveyed timber detection range, make and be surveyed timber take place the shake in rotatory in-process, thereby influence the testing result.
The carrying disc 201 of the present invention is provided with a plurality of sets of clamping devices 216, preferably 3 sets, each set of clamping devices can clamp and fix the wood to be measured, and the wood to be measured is prevented from sliding at the moment when the carrying disc starts to rotate and stops rotating. The clamping device 216 can move along the radial sliding groove 217 to achieve the purpose of being far away from or close to the rotating center, so that the wood to be measured is firmly fixed on the carrying disc, and the wood to be measured can be kept stable and does not slide along with the rotating and lifting process of the carrying disc. The object carrying disc 201 is provided with 360-degree scribed lines, and the tested wood is marked on the outer side of the object carrying disc before detection without any trace, so that the internal structure or the defects of the tested wood can be accurately analyzed after the detection is finished.
The carrying rack vehicle can be in various structures, and preferably, the carrying rack vehicle 100 comprises a rack 101, a protection plate 102 is arranged on the side surface of the rack 101, universal wheels 103 are arranged at the bottom of the rack 101, and the protection plate 102 is connected with the rack through hinges 104. In the testing process, the guard plate can prevent that operator direct contact from reaching rotating electrical machines, elevator motor and second screw rod, and protection personnel safety, the universal wheel can remove this detection device, the outdoor detection of being convenient for.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (4)
1. The utility model provides a timber inner structure imaging system which characterized in that, is including carrying thing support car, carrying thing unit, X ray emission unit, X ray receiving element and two-way portable slip table, wherein:
the carrying unit is arranged in the carrying support vehicle and comprises a carrying disc and a rotary lifting mechanism, and the rotary lifting mechanism is connected with the carrying disc and drives the carrying disc to rotate and lift;
the bidirectional movable sliding table is arranged at the upper part of the carrying support vehicle, the X-ray transmitting unit and the X-ray receiving unit are arranged on the bidirectional movable sliding table and positioned at two sides of the carrying unit, and the X-ray transmitting unit and/or the X-ray receiving unit can slide along the bidirectional movable sliding table;
the bidirectional movable sliding table comprises two parallel horizontal straight guide rails and two C-shaped workpieces; two sliding blocks are respectively arranged at two ends of the C-shaped workpiece, the sliding blocks are clamped on the horizontal straight guide rail and can slide along the horizontal straight guide rail, and locking devices are arranged on the sliding blocks; one C-shaped workpiece is connected with the X-ray transmitting unit through an X-ray transmitter support, and the other C-shaped workpiece is connected with the X-ray receiving unit through an X-ray receiver support;
the rotary lifting mechanism comprises a rotary motor and a lifting motor, the rotary motor is connected with a carrying disc through a second belt and drives the carrying disc to rotate, the lifting motor is connected with a second screw rod, the second screw rod is in threaded connection with the carrying disc, and the lifting motor drives the carrying disc to lift through the second screw rod;
a connecting plate is arranged below the carrying disc, the rotating motor is connected to the connecting plate through a second speed reducer, two guide rods are arranged on diagonal lines of the connecting plate, second sleeves are sleeved outside the guide rods and connected with the carrying support trolley, and screw rod protective sleeves are sleeved outside the second screws;
a sensor support is arranged on one of the guide rods, a proximity switch is arranged at the upper end of the sensor support, a travel switch is arranged at the lower end of the sensor support, and a limit baffle is arranged at the bottom end of one of the guide rods;
the middle part of at least one C-shaped workpiece is connected with a threaded sleeve through a connecting rod, the threaded sleeve is sleeved on a first screw rod, and the first screw rod is connected with a motor;
the carrying disc is provided with a plurality of groups of clamping devices, the clamping devices can move along a radial sliding groove, and the carrying disc is provided with 360-degree scribed lines.
2. The imaging system of the internal structure of the wood according to claim 1, wherein the motor is connected with a first speed reducer, the first speed reducer is connected with the first screw through a first belt, the first speed reducer is arranged on a first speed reducer support, and two ends of the first screw are connected with a first sleeve supporting the first screw.
3. The imaging system for internal structures of wood according to claim 1, wherein proximity switches and travel switches are arranged at two ends of the horizontal straight guide rail and at the position where the center of the carrying disc is perpendicular to the horizontal straight guide rail.
4. The imaging system of claim 3, wherein the object support cart comprises a support frame, the support frame is provided with a protective plate on the side surface, and the support frame is provided with universal wheels on the bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810876401.1A CN109187592B (en) | 2018-08-03 | 2018-08-03 | Imaging system for internal structure of wood |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810876401.1A CN109187592B (en) | 2018-08-03 | 2018-08-03 | Imaging system for internal structure of wood |
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| Publication Number | Publication Date |
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| CN109187592A CN109187592A (en) | 2019-01-11 |
| CN109187592B true CN109187592B (en) | 2022-01-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810876401.1A Active CN109187592B (en) | 2018-08-03 | 2018-08-03 | Imaging system for internal structure of wood |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112362036A (en) * | 2020-11-02 | 2021-02-12 | 上海建工一建集团有限公司 | Method for counting complex engineering physical quantity based on 3D scanning and ray detection technology |
| CN117092141B (en) * | 2023-10-18 | 2024-01-05 | 广东天信电力工程检测有限公司 | X-ray nondestructive flaw detection equipment and method for power transmission line |
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| JP2007199058A (en) * | 2005-12-28 | 2007-08-09 | Sapporo Breweries Ltd | X-ray inspection apparatus |
| CN201191276Y (en) * | 2007-09-06 | 2009-02-04 | 同方威视技术股份有限公司 | Apparatus for detecting contraband article in air-freight service container |
| CN103792244A (en) * | 2014-03-04 | 2014-05-14 | 东北林业大学 | Wood nondestructive testing device capable of conducting imaging in real time at any angle |
| CN206906276U (en) * | 2017-04-28 | 2018-01-19 | 福建省漳平木村林产有限公司 | A kind of three-dimensional timber scanning means based on X ray |
| CN208688992U (en) * | 2018-08-03 | 2019-04-02 | 山东建筑大学 | Plate for timber-construction material nondestructive detection system |
-
2018
- 2018-08-03 CN CN201810876401.1A patent/CN109187592B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007199058A (en) * | 2005-12-28 | 2007-08-09 | Sapporo Breweries Ltd | X-ray inspection apparatus |
| CN201191276Y (en) * | 2007-09-06 | 2009-02-04 | 同方威视技术股份有限公司 | Apparatus for detecting contraband article in air-freight service container |
| CN103792244A (en) * | 2014-03-04 | 2014-05-14 | 东北林业大学 | Wood nondestructive testing device capable of conducting imaging in real time at any angle |
| CN206906276U (en) * | 2017-04-28 | 2018-01-19 | 福建省漳平木村林产有限公司 | A kind of three-dimensional timber scanning means based on X ray |
| CN208688992U (en) * | 2018-08-03 | 2019-04-02 | 山东建筑大学 | Plate for timber-construction material nondestructive detection system |
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