CN113551860B - Big cavity module PIND check out test set - Google Patents
Big cavity module PIND check out test set Download PDFInfo
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- CN113551860B CN113551860B CN202110788341.XA CN202110788341A CN113551860B CN 113551860 B CN113551860 B CN 113551860B CN 202110788341 A CN202110788341 A CN 202110788341A CN 113551860 B CN113551860 B CN 113551860B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/02—Vibration-testing by means of a shake table
- G01M7/06—Multidirectional test stands
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/02—Vibration-testing by means of a shake table
- G01M7/022—Vibration control arrangements, e.g. for generating random vibrations
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/02—Vibration-testing by means of a shake table
- G01M7/027—Specimen mounting arrangements, e.g. table head adapters
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- General Physics & Mathematics (AREA)
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Abstract
The invention discloses a large-cavity module PIND detection device, which is characterized in that: including the detector body, the sensor is the mounting panel of L shape, and the lateral wall is close to top department at this mounting panel front end and is equipped with two arc openings, and is equipped with an arc piece respectively in this arc opening, then fixed mounting is at the last isotructure of two arc pieces of sensor. According to the invention, through the mutual matching among the mounting plate, the fixing pipe, the supporting rod, the annular plate, the swinging plate, the placing plate and the like, the motor can drive the placing plate to move left and right and move up and down, the purpose of vibrating the module is achieved, and the vibration efficiency of the vibration module can be effectively improved.
Description
Technical Field
The invention relates to the technical field of large cavity module PIND detection, in particular to large cavity module PIND detection equipment.
Background
The PIND Chinese name "particle collision detection" is a detection method for testing electrical parts so as to improve the reliability of the electrical parts, and is generally used for detecting redundant loose particles in integrated circuits, capacitors and electronic component packages. Since the electronic component is inevitably subjected to generation of residue of minute particles inside after completion of processing and production, it is invisible to naked eyes, and thus it is necessary to use a PIND detecting apparatus for detection.
However, the existing PIND detection equipment has the defects that the vibration size of the vibration table cannot be well adjusted when the PIND detection equipment is used, and the detection effect is poor due to the fact that the sensor is always in an motionless state, so that the detection efficiency is low, the use is inconvenient, and the like.
Disclosure of Invention
The invention solves the technical problems of low work detection efficiency, inconvenient use and the like in the prior art, and provides large-cavity module PIND detection equipment with the characteristics of high detection efficiency, convenient use and the like.
In order to achieve the above purpose, the present invention provides the following technical solutions: the large-cavity module PIND detection device comprises a detector body, a sensor and an L-shaped mounting plate, wherein two arc-shaped openings are formed in the front side wall of the mounting plate and close to the top, one arc-shaped block is respectively arranged in each arc-shaped opening, and the sensor is fixedly arranged on the two arc-shaped blocks; a top plate is arranged on the front wall of the mounting plate close to the top, the detector body is arranged on the top of the top plate, two connecting wires are inserted into the detector body, and the two connecting wires are fixedly connected with adjacent sensors respectively; the front end of the mounting plate is provided with a fixed pipe, a supporting rod is sleeved in the fixed pipe, one end of the supporting rod extends out of the fixed pipe and is fixedly connected with a transverse plate, and the other end of the supporting rod extends out of the fixed pipe and is fixedly connected with an annular plate; the mounting plate is also provided with a Y-type power output structure, a multi-connecting rod transmission structure and an adjusting mechanism; the annular plate is respectively connected with the Y-shaped power output structure and the adjusting mechanism, and the adjusting mechanism is connected with the transverse plate through the multi-connecting-rod transmission structure.
Further, the Y-shaped power output structure comprises a motor, a second bevel gear connected with a rotating shaft of the motor, a first bevel gear meshed with the second bevel gear, a third bevel gear meshed with the first bevel gear, a transmission plate arranged in the annular plate, and a transmission rod arranged on the rear side wall of the transmission plate and close to the bottom of the annular plate, wherein the rear end of the transmission rod penetrates through the mounting plate and is connected with the first bevel gear; the rear side wall of the mounting plate is fixedly connected with two positioning plates, a reciprocating screw rod is movably connected between the two positioning plates through a bearing, and the bottom end of the reciprocating screw rod penetrates through the bearing inner ring and is connected with a third bevel gear; and the side wall of the reciprocating screw rod is provided with a lifting plate, the lifting plate is movably connected with two pull rods, and the other end of each pull rod is movably connected with a corresponding arc-shaped block.
The multi-link transmission structure comprises a link rod movably connected with the adjusting mechanism, a swing plate movably connected with the rear side wall of the link rod, a fixed block arranged on the rear side wall of the swing plate and close to the central position, an inclined rod arranged on the front side wall of the swing plate and close to the top and movably connected with the front side wall of the swing plate, a push-pull plate movably connected with the rear side wall of the inclined rod, and a placement plate fixedly connected with the right side wall of the push-pull plate; the U-shaped groove is formed in the top of the transverse plate, the placing plate is located in the U-shaped groove, and a fixing mechanism is arranged at the top of the placing plate.
The adjusting mechanism comprises a vertical plate, a rectangular opening is formed in the front wall of the vertical plate, a threaded rod is movably connected between the top and the bottom of an inner cavity of the rectangular opening through a bearing, a rectangular block is mounted on the side wall of the threaded rod, the front side wall of the rectangular block is movably connected with a connecting rod, and the bottom end of the threaded rod penetrates through the inner ring of the bearing and extends to a first rotating plate fixedly connected with the lower portion of the vertical plate.
The fixing mechanism comprises an L-shaped plate, the bottom of the L-shaped plate is fixedly connected with the placing plate, a first threaded hole is formed in the top of the L-shaped plate, a screw rod is installed in the first threaded hole, the bottom end of the screw rod penetrates through the first threaded hole and extends to the L-shaped plate, a pressing plate is movably connected in the L-shaped plate, and the top of the screw rod penetrates through the first threaded hole and extends to a second rotating plate fixedly connected with the upper side of the L-shaped plate.
In order to ensure the use effect, the bottom of the mounting plate is fixedly connected with a bottom plate, second threaded holes are respectively formed in the top of the bottom plate, close to the left side and the right side, and bolts are installed in the second threaded holes.
Meanwhile, the left and right inner walls of the rectangular block are respectively and fixedly connected with a first sliding block, and the left and right inner walls of the rectangular opening are respectively provided with a first sliding groove matched with the first sliding block. The front side wall and the rear side wall of the placing plate are respectively fixedly connected with a second sliding block, and the front inner wall and the rear inner wall of the U-shaped groove are respectively provided with a second sliding groove matched with the second sliding blocks.
In order to ensure that the contact surface is not damaged, the bottom of the pressing plate is fixedly connected with a first protection pad, and the top of the placing plate is fixedly connected with a second protection pad.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, through the mutual coordination among the mounting plate, the fixing pipe, the supporting rod, the annular plate, the swinging plate, the placing plate and the like, the motor can drive the placing plate to move left and right and move up and down, the purpose of vibrating the module is achieved, and the vibration efficiency of the vibration module can be effectively improved;
2. according to the invention, through the mutual coordination among the reciprocating screw rod, the lifting plate, the pull rod, the arc-shaped block and the like, the reciprocating screw rod can drive the two sensors to move up and down in an arc shape through the lifting plate, so that the detection of the module is more comprehensive, and the detection efficiency can be effectively improved;
3. according to the invention, through the mutual matching between the adjusting mechanism and the fixing mechanism, the left and right movement distance of the placing plate can be adjusted through the threaded rod, the purpose that the left and right movement distance of the placing plate can be adjusted is achieved, and the module can be fixed on the placing plate through the pressing plate and the screw rod, so that the module can be used conveniently and rapidly.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a rear view of FIG. 1;
fig. 3 is an enlarged view at a in fig. 1;
fig. 4 is an enlarged view at B in fig. 1;
fig. 5 is a perspective view of the transfer lever of fig. 1.
Reference numerals in the drawings: 1. a mounting plate; 2. a fixed tube; 3. a support rod; 4. a cross plate; 5. a U-shaped groove; 6. an annular plate; 7. a drive plate; 8. a transmission rod; 9. an adjusting mechanism; 91. a riser; 92. a rectangular opening; 93. rectangular blocks; 94. a threaded rod; 10. a connecting rod; 11. a swinging plate; 12. a fixed block; 13. a diagonal rod; 14. a push-pull plate; 15. placing a plate; 16. a fixing mechanism; 161. an L-shaped plate; 162. a first threaded hole; 163. a screw rod; 164. a pressing plate; 17. a first bevel gear; 18. a motor; 19. a second bevel gear; 20. a positioning plate; 21. a reciprocating screw rod; 22. a lifting plate; 23. a pull rod; 24. an arc-shaped block; 25. an arc opening; 26. a third bevel gear; 27. a sensor; 28. a top plate; 29. a detector body; 30. a connecting wire; 31. a second threaded hole; 32. a bolt; 33. a bottom plate.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1 to 5, a detector body 29 in the present invention is a specific device for detecting, and a mounting board 1 is used for carrying the detector body 29 and other parts. The mounting plate 1 is L-shaped, the front wall of the mounting plate 1 is fixedly connected with a fixing pipe 2, and a supporting rod 3 is sleeved in the fixing pipe 2. The support rod 3 passes through the fixed tube 2, one end of the support rod extends to the outside of the fixed tube 2 and is fixedly connected with the transverse plate 4, and the other end of the support rod 3 also extends to the outside of the fixed tube 2 after passing through the fixed tube 2 and is fixedly connected with the annular plate 6. The annular plate 6 is a closed elliptical plate, and the inside of the annular plate is of a hollow structure.
The bottom of the mounting plate 1 is fixedly connected with a bottom plate 33, and second threaded holes 31 are respectively formed in the top of the bottom plate 33 near the left side and the right side, and bolts 32 are arranged in each second threaded hole 31, so that the mounting plate 1 is tightly fixed on the bottom plate 33 through the bolts 32.
Two axisymmetric arc-shaped openings 25 are arranged on the front side wall of the mounting plate 1 near the top, and an arc-shaped block 24 is respectively arranged in each arc-shaped opening 25. The arcuate block 24 is slidable along the inner wall of the arcuate opening 25. The detector body 29 is fixed on the top of the mounting plate 1, the two sensors 27 are respectively and fixedly mounted on the two arc-shaped blocks 24, and the two connecting wires 30 spliced on the detector body 29 are respectively and fixedly connected with the adjacent sensors 27. I.e. one connection line 30 corresponds to one sensor 27.
Meanwhile, the invention is also provided with a Y-shaped power output structure, a multi-connecting rod transmission structure and an adjusting mechanism on the mounting plate 1. The Y-shaped power output structure is used for power output and is used for adjusting the transverse plate 4 up and down through the cooperation of the adjusting mechanism and the multi-link transmission structure.
The Y-shaped power output structure comprises a motor 18, a first bevel gear 17, a second bevel gear 19, a third bevel gear 26, a transmission plate 7, a transmission rod 8, a positioning plate 20, a reciprocating screw rod 21, a lifting plate and a pull rod 23. When fixed, the motor 18 is fixed on the mounting plate 1, the rotating shaft of the motor 18 is connected with the second bevel gear 19, the second bevel gear 19 is meshed with the first bevel gear 17, and the third bevel gear 26 is meshed with the first bevel gear 17.
The transmission plate 7 is arranged inside the annular plate 6, and the transmission rod 8 is fixedly arranged on the rear side wall of the transmission plate 7 and near the bottom of the annular plate 6. The rear end of the transmission rod 8 passes through an inner hole of a bearing arranged on the mounting plate 1 and is connected with a first bevel gear 17. The number of positioning plates 20 is 2, which are arranged up and down on the rear side wall of the mounting plate 1. Each positioning plate 20 is provided with a bearing, and two ends of the reciprocating screw 21 are respectively connected with an upper bearing and a lower bearing.
The bottom end of the reciprocating screw 21 passes through the bearing inner ring of the positioning plate 20 positioned below and then is connected with the third bevel gear 26. The lifting plate 22 is arranged on the side wall of the reciprocating screw 21, so that the reciprocating screw 21 can be driven by the third bevel gear 26 to drive the lifting plate 22 to move up and down. To ensure that the lifting plate 22 can move along a predetermined direction or track, two pull rods 23 are also provided on the mounting plate 1, and the lifting plate 22 is sleeved on the two pull rods 23.
The adjusting mechanism 9 comprises a vertical plate 91, a rectangular opening 92 is formed in the front wall of the vertical plate 91, a threaded rod 94 is movably connected between the top and the bottom of an inner cavity of the rectangular opening 92 through a bearing, a rectangular block 93 is mounted on the side wall of the threaded rod 94, first sliding blocks are fixedly connected to the left and right inner walls of the rectangular block 93 respectively, and first sliding grooves matched with the first sliding blocks are formed in the left and right inner walls of the rectangular opening 92 respectively. The bottom end of the threaded rod 94 passes through the bearing inner ring and extends below the vertical plate 91, and a first rotating plate is fixedly connected to the lower end of the threaded rod 94.
The multi-link transmission structure comprises a link 10, a swing plate 11 movably connected with the rear side wall of the link 10, a fixed block 12 arranged on the rear side wall of the swing plate 11 and close to the central position, an inclined rod 13 arranged on the front side wall of the swing plate 11 and close to the top and movably connected with the front side wall of the swing plate, a push-pull plate 14 movably connected with the rear side wall of the inclined rod 13, and a placement plate 15 fixedly connected with the right side wall of the push-pull plate 14. The front side wall of the transmission plate 7 extends to the outer side of the annular plate 6 and is connected with a connecting rod 10.
The top of the transverse plate 4 is provided with a U-shaped groove 5, and the placing plate 15 is positioned in the U-shaped groove 5. Simultaneously, place the board 15 around the lateral wall fixedly connected with second slider respectively, the inner wall has seted up respectively around the U-shaped groove 5 with second slider assorted second spout, through mounting panel 1, fixed pipe 2, bracing piece 3, annular plate 6, swinging plate 11, place mutually supporting between the board 15 etc. can realize that motor 18 drives and places the board 15 and move about and reciprocate, reaches the purpose of vibration module, can effectually improve its vibration efficiency.
To ensure that the product to be tested does not slip off or be vibrated off, a fixing mechanism 16 is provided on top of the placement plate 15. The fixing mechanism 16 includes an L-shaped plate 161, a first screw hole 162, a screw 163, and a pressing plate 164.
The bottom of L shaped plate 161 is fixed connection with place board 15, and first screw hole 162 sets up at the top of L shaped plate 161. The clamp plate 164 is located the inside of L shaped plate 161, and the bottom of lead screw 163 passes first screw hole 162 and with clamp plate 164 swing joint, and the top of lead screw 163 then fixedly connected with second pivoted plate, clamp plate 164 bottom then fixedly connected with first protection pad, place board 15 top fixedly connected with second protection pad. The product to be tested is placed between the first and second protective pads.
The invention can realize the purpose of adjusting the distance of the left and right movement of the placing plate 15 by rotating the threaded rod 94 through the mutual coordination between the adjusting mechanism 9 and the fixing mechanism 16 and the like, thereby achieving the purpose of adjusting the distance of the left and right movement of the placing plate 15. Meanwhile, the product to be tested can be fixed on the placing plate 15 through the pressing plate 164 and the screw rod 163, and the purpose of convenient use of the product to be tested can be effectively achieved.
When the invention works, firstly, the module to be detected is placed on the placing plate 15, the screw rod 163 is driven to descend by the second rotating plate, the position of the module to be detected is fixed by the pressing plate 164, and the module is prevented from being clamped by the first protection pad and the second protection pad.
After the module to be tested is fixed, the motor 18 is started by an external power supply, the motor 18 drives the first bevel gear 17 and the transmission rod 8 to rotate by the second bevel gear 19, and the transmission rod 8 drives the transmission plate 7 to rotate synchronously. And then the annular plate 6 is driven to move up and down by the rotation of the transmission plate 7, and the annular plate 6 drives the placing plate 15 and the module to be tested to move up and down through the support rods 3. Synchronously, when the transmission plate 7 rotates, the vertical plate 91 and the rectangular block 93 are driven to rotate, the rectangular block 93 drives the swinging plate 11 to swing left and right through the connecting rod 10, and the swinging plate 11 drives the placing plate 15 to move left and right through the inclined rod 13 and the push-pull plate 14, so that the placing plate 15 and the module to be tested move up and down and also move left and right, and the purpose of vibrating the module to be tested is achieved.
When the first bevel gear 17 rotates, the third bevel gear 26 drives the reciprocating screw rod 21 to rotate, and then the reciprocating screw rod 21 drives the lifting plate 22 to reciprocate up and down. When the lifting plate 22 ascends, the two sensors 27 are driven to move upwards in an arc shape through the pull rod 23 and the arc-shaped block 24; when the lifting plate 22 descends, the two sensors 27 are driven to move downwards in an arc shape through the pull rod 23 and the arc-shaped block 24, so that more multidirectional detection of the module is achieved, and the detection effect is better.
When the distance between the left and right movement of the placing plate 15 is required to be adjusted to adjust the vibration amplitude of the module to be tested, the motor 18 is turned off firstly, the rectangular block 93 is driven to move upwards or downwards by rotating the threaded rod 94, and when the rectangular block 93 moves upwards, the rotating diameter of the rectangular block 93 becomes smaller, so that the swinging distance of the swinging plate 11 becomes smaller; when the rectangular block 93 moves downwards, the rotation diameter of the rectangular block 93 becomes larger, so that the swing distance of the swing plate 11 becomes larger, and the purpose of adjusting the vibration amplitude of the module to be tested is achieved.
As described above, the present invention can be well implemented.
Claims (5)
1. Big cavity module PIND check out test set, its characterized in that: the detector comprises a detector body (29), a sensor (27), an L-shaped mounting plate (1), two arc-shaped openings (25) arranged on the front side wall of the mounting plate (1) near the top, and an arc-shaped block (24) respectively arranged in the arc-shaped openings (25), wherein the sensor (27) is fixedly arranged on the two arc-shaped blocks (24); a top plate (28) is arranged on the front wall of the mounting plate (1) close to the top, the detector body (29) is arranged on the top of the top plate (28), two connecting wires (30) are inserted on the detector body (29), and the two connecting wires (30) are fixedly connected with adjacent sensors (27) respectively; the front end of the mounting plate (1) is provided with a fixed pipe (2), a supporting rod (3) is sleeved in the fixed pipe (2), one end of the supporting rod (3) extends out of the fixed pipe (2) and is fixedly connected with a transverse plate (4), and the other end of the supporting rod extends out of the fixed pipe (2) and is fixedly connected with an annular plate (6); the mounting plate (1) is also provided with a Y-type power output structure, a multi-connecting rod transmission structure and an adjusting mechanism; the annular plate (6) is respectively connected with the Y-shaped power output structure and the adjusting mechanism (9), and the adjusting mechanism (9) is connected with the transverse plate (4) through a multi-connecting rod transmission structure;
the Y-shaped power output structure comprises a motor (18), a second bevel gear (19) connected with a rotating shaft of the motor (18), a first bevel gear (17) meshed with the second bevel gear (19), a third bevel gear (26) meshed with the first bevel gear (17), a transmission plate (7) arranged inside the annular plate (6), a transmission rod (8) arranged on the rear side wall of the transmission plate (7) and close to the bottom of the annular plate (6), and the rear end of the transmission rod (8) penetrates through the mounting plate (1) and is connected with the first bevel gear (17); two positioning plates (20) are fixedly connected to the rear side wall of the mounting plate (1), a reciprocating screw rod (21) is movably connected between the two positioning plates (20) through a bearing, and the bottom end of the reciprocating screw rod (21) penetrates through the bearing inner ring and is connected with a third bevel gear (26); a lifting plate (22) is arranged on the side wall of the reciprocating screw rod (21), two pull rods (23) are movably connected to the lifting plate (22), and the other end of each pull rod (23) is movably connected with a corresponding arc-shaped block (24);
the multi-link transmission structure comprises a link (10) movably connected with the adjusting mechanism (9), a swing plate (11) movably connected with the rear side wall of the link (10), a fixed block (12) arranged on the rear side wall of the swing plate (11) and close to the central position, an inclined rod (13) arranged on the front side wall of the swing plate (11) close to the top and movably connected with the front side wall of the swing plate, a push-pull plate (14) movably connected with the rear side wall of the inclined rod (13) and a placing plate (15) fixedly connected with the right side wall of the push-pull plate (14); a U-shaped groove (5) is formed in the top of the transverse plate (4), the placing plate (15) is positioned in the U-shaped groove (5), and a fixing mechanism (16) is arranged at the top of the placing plate (15);
the adjusting mechanism (9) comprises a vertical plate (91), a rectangular opening (92) is formed in the front wall of the vertical plate (91), a threaded rod (94) is movably connected between the top and the bottom of an inner cavity of the rectangular opening (92) through a bearing, a rectangular block (93) is arranged on the side wall of the threaded rod (94), the front side wall of the rectangular block (93) is movably connected with a connecting rod (10), and the bottom end of the threaded rod (94) penetrates through the inner ring of the bearing and extends to the lower part of the vertical plate (91) to be fixedly connected with a first rotating plate;
the fixing mechanism (16) comprises an L-shaped plate (161), the bottom of the L-shaped plate (161) is fixedly connected with the placement plate (15), a first threaded hole (162) is formed in the top of the L-shaped plate (161), a screw rod (163) is installed in the first threaded hole (162), the bottom end of the screw rod (163) penetrates through the first threaded hole (162) and extends to a pressing plate (164) movably connected in the L-shaped plate (161), and the top of the screw rod (163) penetrates through the first threaded hole (162) and extends to a second rotating plate fixedly connected with the upper side of the L-shaped plate (161).
2. A large cavity module PIND detection apparatus according to claim 1, wherein: the bottom of the mounting plate (1) is fixedly connected with a bottom plate (33), second threaded holes (31) are respectively formed in the top of the bottom plate (33) close to the left side and the right side, and bolts (32) are arranged in the second threaded holes (31).
3. A large cavity module PIND detection apparatus according to claim 2, wherein: the left and right inner walls of the rectangular block (93) are respectively fixedly connected with a first sliding block, and the left and right inner walls of the rectangular opening (92) are respectively provided with a first sliding groove matched with the first sliding block.
4. A large cavity module PIND detection apparatus according to claim 3, wherein: the front side wall and the rear side wall of the placing plate (15) are respectively fixedly connected with a second sliding block, and the front inner wall and the rear inner wall of the U-shaped groove (5) are respectively provided with a second sliding groove matched with the second sliding blocks.
5. The large cavity module PIND detection apparatus of claim 4, wherein: the bottom of the pressing plate (164) is fixedly connected with a first protection pad, and the top of the placing plate (15) is fixedly connected with a second protection pad.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202110788341.XA CN113551860B (en) | 2021-07-13 | 2021-07-13 | Big cavity module PIND check out test set |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110788341.XA CN113551860B (en) | 2021-07-13 | 2021-07-13 | Big cavity module PIND check out test set |
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| CN113551860B true CN113551860B (en) | 2023-10-10 |
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| CN208459127U (en) * | 2018-04-08 | 2019-02-01 | 铜陵昌盛家具有限责任公司 | A kind of testing equipment of timber parallel-to-grain compressive strength |
| CN208366777U (en) * | 2018-06-01 | 2019-01-11 | 苏州东菱振动试验仪器有限公司 | A kind of electronic particles collision shake table |
| CN209148145U (en) * | 2018-12-28 | 2019-07-23 | 常州正河源数控工具有限公司 | A kind of wireless transmission detector detecting cutter vibration amplitude |
| CN109668706A (en) * | 2019-02-26 | 2019-04-23 | 北京工业大学 | A kind of piezoelectric vibration plane matrix formula sensor for PIND |
| CN110293048A (en) * | 2019-06-10 | 2019-10-01 | 北京工业大学 | A kind of PIND detection sweeps width formula shake table with wireless automatic frequency sweep |
| CN213122159U (en) * | 2020-10-10 | 2021-05-04 | 梁冬芬 | Power equipment safety inspection device |
| CN112858053A (en) * | 2020-12-09 | 2021-05-28 | 凯晟动力技术（嘉兴）有限公司 | Oxygen sensor durability detection device and detection method thereof |
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