CN212442124U - Stress wave saw material grading device - Google Patents
Stress wave saw material grading device Download PDFInfo
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- CN212442124U CN212442124U CN202020649985.1U CN202020649985U CN212442124U CN 212442124 U CN212442124 U CN 212442124U CN 202020649985 U CN202020649985 U CN 202020649985U CN 212442124 U CN212442124 U CN 212442124U
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Abstract
The utility model discloses a device such as stress ripples sawn timber, relate to timber structure processing technology field, which comprises a frame, strike hammer device, dam device, horizontal positioning device, the receiving terminal device, weighing device, moisture content detection device, conveyor and industrial computer control system, conveyor is used for carrying the sawn timber, dam device includes first location sensing component, second location sensing component and dam component, dam component is used for blocking the sawn timber on the conveyor, weighing device is used for weighing the sawn timber, horizontal positioning device is used for driving the sawn timber and presses close to the receiving terminal device, strike hammer device and be used for striking the terminal surface of sawn timber and make its inside propagation that produces the stress wave in the following grain direction, the receiving terminal device is used for measuring the change of the propagation time and the propagation velocity of stress wave. The utility model provides a device is divided to stress ripples sawn timber can explore the inside defect of sawn timber, and safe and reliable is applicable to the sawn timber grade of short-term test different specification and dimension on the production line.
Description
Technical Field
The utility model relates to a timber structure processing technology field especially relates to a device such as stress ripples saw material.
Background
With the application of assembly type and multi-high-rise wood structure buildings, laminated wood (laminated wood) and orthogonal laminated wood have the development trend of large component specification and size and diversified structural forms. One of the core unit materials is sawn timber, and the sawn timber is a standard timber processed according to the design requirements of the wood structure building and with the set dimension on the width and the height of the section of the sawn timber, and the mechanical property of the elastic modulus directly influences the quality and the safety of the assembled wood structure building. The sawn timber after grading can be directly applied to members such as light trusses, walls and the like, can also be processed into laminated wood (laminated wood), orthogonal laminated wood members and the like with larger specification and size by combining the same grade or different grades, and can be applied to building structures with different stress forms such as heavy beams and columns.
The sawn timber grading method mainly comprises visual grading, mechanical stress grading and integration grading of the two methods. Because the wood structure production in the early stage does not consider the sawn timber grading process, the new addition of equipment in the existing production line is difficult, and the existing mechanical testing machine or the grading equipment is limited by the use space and cannot be directly added to the production line for use. Therefore, the grading equipment is required to meet the continuous processing requirements and control functions of the production line and also have the grading detection function of batch, but at present, the grading equipment meeting the requirements is not available. In practical implementation, it can be found that the lack of the sawing material grading method leads to the fact that the manufacturing quality of the wood structure building component of a manufacturer cannot be monitored, and the production cost is high.
SUMMERY OF THE UTILITY MODEL
For solving above technical problem, the utility model provides a device is divided to stress ripples sawn timber can explore the inside defect of sawn timber, and safe and reliable is applicable to the sawn timber grade of short-term test different specification and dimension on the production line.
In order to achieve the above object, the utility model provides a following scheme:
the utility model provides a stress wave saw material grading device, which comprises a frame, a knocking hammer device, a material blocking device, a horizontal positioning device, a receiving end device, a weighing device, a water content detection device, a conveying device and an industrial computer control system, wherein the knocking hammer device, the material blocking device, the horizontal positioning device, the receiving end device, the weighing device, the water content detection device and the conveying device are all arranged on the frame, the material blocking device comprises a first positioning sensing assembly, a second positioning sensing assembly and a material blocking assembly, the horizontal positioning device and the receiving end device are respectively arranged at two sides of the conveying device, the weighing device and the material blocking assembly are both arranged below the conveying device, the horizontal positioning device, the weighing device and the receiving end collineation device are arranged, the material blocking assembly is arranged at the rear end of the weighing device, the knocking hammer device is arranged on one side of the horizontal positioning device, the first positioning sensing assembly and the second positioning sensing assembly are respectively arranged at the front end and the rear end of the receiving end device, the moisture content detection device is arranged on one side of the conveying device, the moisture content detection device is positioned between the first positioning sensing assembly and the receiving end device, and the knocking hammer device, the horizontal positioning device, the receiving end device, the weighing device, the moisture content detection device, the conveying device, the first positioning sensing assembly, the second positioning sensing assembly and the material blocking assembly are all connected with the industrial computer control system.
Preferably, the knocking hammer device comprises a pulse knocking hammer, a rotary cylinder and a first support, the first support is fixed on the rack, the rotary cylinder is fixed on the first support, the pulse knocking hammer is connected with the rotary cylinder, and the rotary cylinder is connected with the industrial computer control system.
Preferably, the material blocking assembly comprises two first vertical air cylinders, the two first vertical air cylinders are fixed on the rack, and the first vertical air cylinders are connected with the industrial computer control system.
Preferably, the first positioning sensing assembly comprises two first positioning sensors, the two first positioning sensors are symmetrically arranged on two sides of the front end of the conveying device, and the first positioning sensors are connected with the industrial computer control system; the second positioning sensing assembly comprises two second positioning sensors, the two second positioning sensors are symmetrically arranged on two sides of the rear end of the conveying device, and the second positioning sensors are connected with the industrial computer control system.
Preferably, the horizontal positioning device comprises a guide rail, a second support and a horizontal cylinder, the horizontal cylinder is fixed on the second support, the second support is installed on the guide rail, the guide rail is fixed on the rack, the extending direction of the guide rail is perpendicular to the conveying direction of the conveying device, and the horizontal cylinder is connected with the industrial computer control system.
Preferably, the receiving end device comprises a third support, a receiver and a positioning plate, the third support is fixed on the rack, the receiver is fixed on the third support, the positioning plate is connected with the receiver, the positioning plate is arranged on one side close to the conveying device, and the receiver is connected with the industrial computer control system.
Preferably, the weighing device includes two weighing components, the weighing component includes fourth support, the perpendicular cylinder of second and weighing sensor, the fourth support is fixed in the frame, the perpendicular cylinder of second is fixed in on the fourth support, weighing sensor install in the top of the perpendicular cylinder of second, the perpendicular cylinder of second with weighing sensor all with industry computer control system connects.
The utility model discloses for prior art gain following technological effect:
the utility model provides a device is divided to stress ripples sawn timber, utilize current timber structure production line conveyor's structural configuration, can conveniently install each part in equipment such as stress ripples sawn timber branch fast, the structure of having overcome traditional mechanics testing machine is huge, the function is single, the limited unfavorable factor in test space, the sawn timber grade of the different specification and dimension of short-term test on the specially adapted production line, improve the comprehensive utilization rate and the timber structure building safety of sawn timber, reduced manufacturing cost. The utility model discloses in adopt stress wave to detect the principle, compare in other nondestructive test means, stress wave propagation distance is far away, and the energy of propagation is big, and the interference killing feature is strong, does not need any couplant and any special conditions, and stress wave nondestructive test is harmless to the human body simultaneously, and safe and reliable is adapted to various environment. Meanwhile, the stress wave detection method can detect surface defects of wood such as grains and knots, is very sensitive to defects such as internal decay and cavities, and has obvious difference between the propagation speed of the stress wave in the wood and the propagation speed of the stress wave in normal wood when the wood is decayed or the wood is provided with the cavities, so that the defects in the wood can be detected, the wood strength can be determined, and the wood can be graded.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a front view of a stress wave saw material dividing device provided by the present invention;
fig. 2 is a top view of the stress wave saw material dividing device provided by the present invention.
Description of reference numerals: 1. a frame; 2. a first support; 3. a rotating cylinder; 4. a pulse knocking hammer; 5. a first vertical cylinder; 6. a first positioning sensor; 7. a second positioning sensor; 8. a second support; 9. a horizontal cylinder; 10. a third support; 11. a receiver; 12. positioning a plate; 13. a fourth support; 14. a second vertical cylinder; 15. a weighing sensor; 16. a moisture content detection device; 17. an industrial computer control system; 18. a conveying device; 19. sawing the wood.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The utility model aims at providing a device is divided to stress ripples sawn timber etc. can explore the inside defect of sawn timber, safe and reliable is applicable to the sawn timber grade of the different specification and dimension of short-term test on the production line.
In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description.
As shown in fig. 1 and fig. 2, the present embodiment provides a stress wave sawn timber grading device, which includes a frame 1, a knocking hammer device, a material blocking device, a horizontal positioning device, a receiving end device, a weighing device, a moisture content detection device 16, a conveying device 18 and an industrial computer control system 17, wherein the knocking hammer device, the material blocking device, the horizontal positioning device, the receiving end device, the weighing device, the moisture content detection device 16 and the conveying device 18 are all disposed on the frame 1, the material blocking device includes a first positioning sensing assembly, a second positioning sensing assembly and a material blocking assembly, the horizontal positioning device and the receiving end device are respectively disposed at two sides of the conveying device 18, the weighing device and the material blocking assembly are both disposed below the conveying device 18, the horizontal positioning device, the weighing device and the receiving end device are disposed in a collinear manner, the horizontal positioning device is used for driving the receiving end device of sawn, the weighing device is used for weighing sawn timber 19, the material blocking assembly is arranged at the rear end of the weighing device and used for blocking the sawn timber 19 on the conveying device 18, the knocking hammer device is arranged at one side of the horizontal positioning device and used for knocking the end face of the sawn timber 19 to enable the end face of the sawn timber 19 to generate stress wave propagation in the grain direction, the receiving end device is used for measuring the propagation time and the propagation speed change of the stress wave, the first positioning sensing assembly and the second positioning sensing assembly are respectively arranged at the front end and the rear end of the receiving end device, the first positioning sensing assembly is used for detecting that the sawn timber 19 enters the detection subarea, the second positioning sensing assembly is used for detecting that the sawn timber 19 leaves the detection subarea, the moisture content detection device 16 is arranged at one side of the conveying device 18 and is arranged between the first positioning sensing assembly and the receiving end device, the moisture content detection device 16 is used for detecting the moisture, the knocking hammer device, the horizontal positioning device, the receiving end device, the weighing device, the moisture content detection device 16, the conveying device 18, the first positioning sensing assembly, the second positioning sensing assembly and the material blocking assembly are all connected with an industrial computer control system 17.
The knocking hammer device comprises a pulse knocking hammer 4, a rotary cylinder 3 and a first support 2, wherein the first support 2 is fixed on a rack 1, the rotary cylinder 3 is fixed on the first support 2, the pulse knocking hammer 4 is connected with the rotary cylinder 3, the rotary cylinder 3 is connected with an industrial computer control system 17, a certain distance is reserved between the pulse knocking hammer 4 and a sawn timber 19 in an initial state, and the rotary cylinder 3 can drive the pulse knocking hammer 4 to rotate by 90 degrees to knock the end face of the sawn timber 19.
The material blocking assembly comprises two first vertical cylinders 5, the two first vertical cylinders 5 are fixed on the rack 1, the first vertical cylinders 5 are connected with the industrial computer control system 17, and during work, the industrial computer control system 17 can control the two first vertical cylinders 5 to stretch.
The first positioning sensing assemblies comprise two first positioning sensors 6, the two first positioning sensors 6 are symmetrically arranged on two sides of the front end of the conveying device 18, the first positioning sensors 6 are connected with the industrial computer control system 17, and the two first positioning sensing assemblies can detect that the sawn timber 19 enters a detection subarea and transmit signals to the industrial computer control system 17; the second positioning sensing assembly comprises two second positioning sensors 7, the two second positioning sensors 7 are symmetrically arranged on two sides of the rear end of the conveying device 18, the second positioning sensors 7 are connected with the industrial computer control system 17, and the two second positioning sensors 7 can detect that the sawn timber 19 leaves the detection subarea and transmit signals to the industrial computer control system 17.
The horizontal positioning device comprises a guide rail, a second support 8 and a horizontal cylinder 9, the horizontal cylinder 9 is fixed on the second support 8, the second support 8 is installed on the guide rail, the guide rail is fixed on the rack 1, the extending direction of the guide rail is perpendicular to the conveying direction of the conveying device 18, the horizontal cylinder 9 is connected with the industrial computer control system 17, and during work, the industrial computer control system 17 can control the horizontal cylinder 9 to stretch. Since the horizontal cylinder 9 is slidably mounted on the guide rail via the second mount 8, the position of the horizontal cylinder 9 can be adjusted according to the actual length of the sawn timber 19.
The receiving end device comprises a third support 10, a receiver 11 and a positioning plate 12, the third support 10 is fixed on the frame 1, the receiver 11 is fixed on the third support 10, the positioning plate 12 is connected with the receiver 11, the positioning plate 12 is arranged on one side close to the conveying device 18, and the receiver 11 is connected with an industrial computer control system 17. Specifically, the positioning plate 12 and the receiver 11 are located on the same vertical plane, and a damper is installed at the end of the receiver 11 to prevent the sawn timber 19 from colliding with the receiver 11 and damaging the receiver 11.
The weighing device comprises two weighing components, the weighing components comprise a fourth support 13, a second vertical cylinder 14 and a weighing sensor 15, the fourth support 13 is fixed on the rack 1, the second vertical cylinder 14 is fixed on the fourth support 13, the weighing sensor 15 is installed at the top end of the second vertical cylinder 14, and the second vertical cylinder 14 and the weighing sensor 15 are both connected with an industrial computer control system 17. Specifically, the second vertical cylinder 14 is a torsion-proof vertical cylinder.
The industrial computer control system 17 comprises an industrial control computer, a display and a logic controller, wherein the display is connected with the industrial control computer, control ports of the rotary cylinder 3, the first vertical cylinder 5, the first positioning sensor 6, the second positioning sensor 7, the horizontal cylinder 9, the receiver 11, the second vertical cylinder 14 and the weighing sensor 15 are respectively connected with corresponding control ports on the logic controller, and a signal transmission port of the industrial control computer is connected with a corresponding control port on the logic controller.
The embodiment also provides a method for dividing stress wave saw materials, and the device for dividing stress wave saw materials in the embodiment is applied, and comprises the following steps:
firstly, the sawn timber 19 is transversely conveyed by using the conveying device 18, wherein the transverse conveying means that the long edge of the sawn timber 19 is vertical to the conveying direction of the conveying device 18, when the first positioning sensing assembly detects that the sawn timber 19 passes through, a signal is sent to the industrial computer control system 17, the material blocking assembly acts immediately to block the sawn timber 19, and meanwhile, the conveying device 18 decelerates until the conveying device stops;
secondly, the weighing device acts to measure the weight of the sawn timber 19, specifically, the two second vertical air cylinders 14 drive the two weighing sensors 15 to lift up, the weighing sensors 15 measure the weight of the sawn timber 19, the moisture content detection device 16 detects the moisture content of the sawn timber 19 at multiple points at the same time, the weight and moisture content data of the sawn timber 19 are transmitted to the industrial computer control system 17, and after the industrial computer control system 17 receives a data signal, the weighing device resets, specifically, the two second vertical air cylinders 14 drive the two weighing sensors 15 to descend so as to be far away from the sawn timber 19;
step three, after the weighing action is finished, the horizontal positioning device acts to push the sawn timber 19 to the receiving end device, then the horizontal positioning device resets, specifically, the horizontal cylinder 9 acts to extend out to enable the sawn timber 19 to be close to the positioning plate 12 longitudinally, and then the horizontal cylinder 9 acts to retract;
fourthly, immediately knocking the end face of the sawn timber 19 by the action of the knocking hammer device, specifically, driving the pulse knocking hammer 4 to rotate by 90 degrees by the rotary cylinder 3 to realize knocking the end face of the sawn timber 19, generating stress waves in the sawn timber 19, measuring the change of the propagation time and the propagation speed of the stress waves by the receiver 11 at the other end of the sawn timber 19, comprehensively determining the elastic modulus of the sawn timber 19 by combining the measured values of the weight and the water content of the sawn timber 19 through the industrial computer control system 17, dividing the sawn timber 19 into a plurality of strength grades according to the elastic modulus value, directly outputting the sawn timber 19 meeting the strength grade standard to the next process, and outputting the sawn timber 19 not meeting the strength grade standard for other use;
step five, after the industrial computer control system 17 receives the data signal of the receiver 11, the material blocking assembly is driven to reset, namely the two first vertical air cylinders 5 retract, the conveying device 18 is started, the sawn timber 19 is continuously conveyed to the next procedure, the second positioning sensing assembly sends a signal to the industrial computer control system 17 when detecting that the sawn timber 19 passes through, and specifically, the two second positioning sensors 7 send a signal to the industrial computer control system 17 when detecting that the sawn timber 19 passes through by means of correlation;
step six, immediately repeating the actions from step one to step five for the next sawn timber 19.
The stress wave sawn timber grading device in the embodiment is arranged at the starting end of the feeding of the production line, and by utilizing the structural configuration of the conveying device 18 of the existing wood structure production line, each part in the stress wave sawn timber grading device can be conveniently and quickly arranged, so that the adverse factors of large structure, single function and limited test space of the traditional mechanical testing machine are overcome, the stress wave sawn timber grading device is particularly suitable for quickly detecting the grades of sawn timber 19 with different specifications and sizes on the production line, the comprehensive utilization rate of the sawn timber 19 and the building safety of the wood structure are improved, and the production cost is reduced.
Compared with other nondestructive detection means, the stress wave detection method has the advantages that the stress wave detection principle is adopted, the propagation distance of the stress wave is long, the propagation energy is large, the anti-interference capability is strong, any coupling agent and any special condition are not needed, meanwhile, the stress wave nondestructive detection is harmless to a human body, safe and reliable, and the stress wave detection method is suitable for various environments.
The traditional nondestructive detection means for wood mostly detect the influence of obvious knots on the surface of the wood on the performance of the wood, while in the detection of wood defects, the internal defects of the wood are often more difficult to detect and discover than the external defects, but the influence on the quality and the mechanical property of the wood is great. The stress wave detection method adopted in the embodiment can detect surface defects of wood such as grains and knots, is very sensitive to defects such as internal decay and cavities, and has obvious difference between the propagation speed of the stress wave in the wood and the propagation speed of the stress wave in normal wood when the decay or the cavities exist in the wood, so that the defects in the wood can be detected, the wood strength can be determined, and the wood can be graded. The detection object in this embodiment is directed at sawn timber 19, and its moisture content, inner structure, chemical composition etc. do not have obvious difference, can greatly reduced the influence that detection object inner structure difference brought.
The principle and the implementation mode of the present invention are explained by applying specific examples in the present specification, and the above descriptions of the examples are only used to help understanding the method and the core idea of the present invention; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the concrete implementation and the application scope. In summary, the content of the present specification should not be construed as a limitation of the present invention.
Claims (7)
1. A stress wave sawing material dividing device is characterized by comprising a rack, a knocking hammer device, a material blocking device, a horizontal positioning device, a receiving end device, a weighing device, a water content detection device, a conveying device and an industrial computer control system, wherein the knocking hammer device, the material blocking device, the horizontal positioning device, the receiving end device, the weighing device, the water content detection device and the conveying device are all arranged on the rack, the material blocking device comprises a first positioning sensing assembly, a second positioning sensing assembly and a material blocking assembly, the horizontal positioning device and the receiving end device are respectively arranged on two sides of the conveying device, the weighing device and the material blocking assembly are both arranged below the conveying device, the horizontal positioning device, the weighing device and the receiving end collinear device are arranged, and the material blocking assembly is arranged at the rear end of the weighing device, the knocking hammer device is arranged on one side of the horizontal positioning device, the first positioning sensing assembly and the second positioning sensing assembly are respectively arranged at the front end and the rear end of the receiving end device, the moisture content detection device is arranged on one side of the conveying device, the moisture content detection device is positioned between the first positioning sensing assembly and the receiving end device, and the knocking hammer device, the horizontal positioning device, the receiving end device, the weighing device, the moisture content detection device, the conveying device, the first positioning sensing assembly, the second positioning sensing assembly and the material blocking assembly are all connected with the industrial computer control system.
2. The stress wave saw material equally dividing device according to claim 1, wherein the hammering device comprises a pulse hammering hammer, a rotating cylinder and a first support, the first support is fixed on the frame, the rotating cylinder is fixed on the first support, the pulse hammering hammer is connected with the rotating cylinder, and the rotating cylinder is connected with the industrial computer control system.
3. The stress wave saw material dividing device according to claim 1, wherein the stop assembly comprises two first vertical cylinders, the two first vertical cylinders are fixed on the frame, and the first vertical cylinders are connected with the industrial computer control system.
4. The stress wave saw material equal dividing device according to claim 1, wherein the first positioning sensing assembly comprises two first positioning sensors, the two first positioning sensors are symmetrically arranged on two sides of the front end of the conveying device, and the first positioning sensors are connected with the industrial computer control system; the second positioning sensing assembly comprises two second positioning sensors, the two second positioning sensors are symmetrically arranged on two sides of the rear end of the conveying device, and the second positioning sensors are connected with the industrial computer control system.
5. The stress wave saw material equal dividing device according to claim 1, wherein the horizontal positioning device comprises a guide rail, a second support and a horizontal cylinder, the horizontal cylinder is fixed on the second support, the second support is installed on the guide rail, the guide rail is fixed on the frame, the extension direction of the guide rail is perpendicular to the conveying direction of the conveying device, and the horizontal cylinder is connected with the industrial computer control system.
6. The stress wave saw material equal dividing device according to claim 1, wherein the receiving end device comprises a third support, a receiver and a positioning plate, the third support is fixed on the frame, the receiver is fixed on the third support, the positioning plate is connected with the receiver, the positioning plate is arranged on one side close to the conveying device, and the receiver is connected with the industrial computer control system.
7. The stress wave saw material equal dividing device according to claim 1, wherein the weighing device comprises two weighing components, the weighing components comprise a fourth support, a second vertical cylinder and a weighing sensor, the fourth support is fixed on the frame, the second vertical cylinder is fixed on the fourth support, the weighing sensor is installed at the top end of the second vertical cylinder, and the second vertical cylinder and the weighing sensor are both connected with the industrial computer control system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020649985.1U CN212442124U (en) | 2020-04-26 | 2020-04-26 | Stress wave saw material grading device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020649985.1U CN212442124U (en) | 2020-04-26 | 2020-04-26 | Stress wave saw material grading device |
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| Publication Number | Publication Date |
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| CN212442124U true CN212442124U (en) | 2021-02-02 |
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| CN202020649985.1U Active CN212442124U (en) | 2020-04-26 | 2020-04-26 | Stress wave saw material grading device |
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| CN (1) | CN212442124U (en) |
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