CN111707436B - Drop test machine capable of simulating continuous drop - Google Patents
Drop test machine capable of simulating continuous drop Download PDFInfo
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- CN111707436B CN111707436B CN202010618790.5A CN202010618790A CN111707436B CN 111707436 B CN111707436 B CN 111707436B CN 202010618790 A CN202010618790 A CN 202010618790A CN 111707436 B CN111707436 B CN 111707436B
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- 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
- G01M7/08—Shock-testing
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Abstract
The invention discloses a drop test machine capable of simulating continuous drop, which belongs to the technical field of test and comprises an object stage, a clamping mechanism, a driving mechanism, a supporting rod group and an eccentric wheel group, wherein the driving mechanism is in transmission connection with the supporting rod group through the eccentric wheel group, the supporting rod group abuts against the object stage, when a sample machine to be tested drops to the object stage from the clamping mechanism, the supporting rod group can drive the object stage to perform instantaneous descending motion so as to realize continuous drop test, the clamping mechanism comprises a first clamping group, a second clamping group and a horizontal feeding mechanism, the horizontal feeding mechanism can drive the second clamping group to perform reciprocating feeding motion, and the sample machine to be tested is clamped or loosened by matching with the first clamping group. The drop test machine capable of simulating continuous dropping, disclosed by the invention, can simulate a continuous dropping state by matching the clamping mechanism with the object stage capable of instantaneously dropping, so that the test indexes are richer and more diverse, the test height is adjusted without manually clamping for many times, and the test machine is more convenient and faster.
Description
Technical Field
The invention relates to the technical field of testing, in particular to a drop test machine capable of simulating continuous drop.
Background
In the process of using various electronic products, the electronic products are likely to fall and break due to accidents, so that product falling tests are increased for various large brand manufacturers and part manufacturers all around the world. Most of electronic product damages are caused by falling collision, research personnel usually consume a large amount of time and cost, relevant quality tests are carried out on products, and the most common structural tests are falling and impact tests.
Chinese patent document publication No. CN208847444U discloses an electronic product drop test device, which comprises a frame, a motor, a transmission assembly, a supporting rotating shaft, a special-shaped wheel, a follower wheel, a mandril, a drop test plate and a side wall block; the top of the rack is fixedly provided with a side enclosure, and the drop test board is positioned in the side enclosure; the ejector rod is positioned below the drop test plate, the upper end of the ejector rod is fixedly connected with the drop test plate, and the follower wheel is rotatably arranged at the lower end of the ejector rod; the outer edge of the special-shaped wheel is an Archimedes spiral line, the outer edge of the special-shaped wheel is in contact fit with the follower wheel, and the special-shaped wheel is rotatably arranged on the rack through a supporting rotating shaft; the motor is connected with the special-shaped wheel through a transmission assembly and is used for driving the special-shaped wheel to rotate.
However, the drop test height of the electronic product drop test equipment is single, the drop test equipment is difficult to adapt to the detection requirements of products to be detected on multiple heights, and when a user uses an electronic product to drop, the same electronic product usually drops continuously at different heights, the drop test equipment is difficult to simulate the drop condition, and the drop test result is single.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to solve the technical problem of providing a drop test machine capable of simulating continuous dropping.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides a drop test machine capable of simulating continuous drop, which comprises an object stage for bearing a sample machine to be tested and a clamping mechanism for clamping the sample machine to be tested, and also comprises a driving mechanism, a supporting rod group and an eccentric wheel group, wherein the power output end of the driving mechanism is in transmission connection with the power output end of the supporting rod group through the eccentric wheel group, the power output end of the supporting rod group is abutted against the bottom surface of the object stage, after the sample machine to be tested drops to the object stage from the clamping mechanism, the supporting rod group can drive the object stage to perform instantaneous drop motion so as to realize continuous drop test on the sample machine to be tested, the clamping mechanism comprises a first clamping group, a second clamping group and a horizontal feeding mechanism, the first clamping group and the second clamping group are distributed in parallel, the power output end of the horizontal feeding mechanism is fixedly connected with the second clamping group, the horizontal feeding mechanism can drive the second clamping group to perform reciprocating feeding motion, the sample machine to be tested is clamped or loosened by matching with the first clamping group.
The invention has the preferable technical scheme that the outer circular surface of the eccentric wheel set is formed by mutually connecting at least one section of spiral arc surface and at least one section of plane.
The horizontal feeding mechanism comprises a guide rail sliding block group and a ball screw transmission group, the nut end of the ball screw transmission group is fixedly connected with the sliding block end of the guide rail sliding block group, the ball screw transmission group performs spiral transmission, and the sliding block end of the guide rail sliding block group can drive the second clamping group to perform reciprocating sliding on the guide rail end of the guide rail sliding block group, so that the second clamping group is matched with the first clamping group to clamp or loosen a sample machine to be tested.
The first clamping group comprises a first connecting rod, a first guide rod group and at least one first positioning clamping plate, the end part of the first connecting rod is fixedly connected with one end of the first guide rod group, and the first positioning clamping plate is detachably connected with the outer circular surface of the first guide rod group so as to clamp a sample machine to be tested.
The invention has the preferable technical scheme that the second clamping group comprises a second connecting rod, a second guide rod group and at least one second positioning clamping plate, the end part of the second connecting rod is fixedly connected with one end of the second guide rod group, the other end of the second guide rod group penetrates through the sliding block end of the guide rail sliding block group, and the second positioning clamping plate is detachably connected with the outer circular surface of the second guide rod group so as to clamp the sample machine to be tested.
The invention has the preferable technical scheme that a linear bearing assembly is sleeved on the outer circular surface of the support rod group, the support rod group can slide in the linear bearing assembly in a reciprocating manner along the axial direction, one end of the support rod group is abutted against the outer circular surface of the eccentric wheel group, and the other end of the support rod group penetrates through the linear bearing assembly to be abutted against the bottom surface of the objective table.
The invention has the preferable technical scheme that an elastic piece for buffering and damping is sleeved on the outer circular surface of the support rod group.
The invention preferably adopts the technical scheme that the drop test machine capable of simulating continuous dropping further comprises an electric cabinet, and the signal end of the driving mechanism and the signal end of the horizontal feeding mechanism are respectively and electrically connected with the signal end of the electric cabinet.
The invention preferably adopts the technical scheme that one end of the first guide rod group penetrates through the guide block group.
The invention has the beneficial effects that:
according to the drop test machine capable of simulating continuous dropping, the power output end of the driving mechanism rotates to drive the eccentric wheel set to rotate, the supporting rod set is driven to reciprocate vertically, and the objective table is driven to reciprocate. After a user places a sample machine to be tested on the objective table, the supporting rod group and the objective table are pushed to rise to the highest point through the eccentric wheel group, then the supporting rod group and the objective table can be driven to fall instantaneously due to the eccentric distance drop of the eccentric wheel group, the drop height of the fall is the eccentric distance of the eccentric wheel group, when the sample machine to be tested falls to the objective table from the clamping mechanism, the supporting rod group can drive the objective table to perform instantaneous falling motion, the sample machine to be tested is enabled to realize continuous falling test, and then the continuous falling test is completed on an electronic product. Adopt actuating mechanism to carry out synchro control to eccentric wheelset's rotation, and then carry out synchro control to the elevating movement of bracing piece group, guarantee to go up and down highly uniform, and then more steady reliable to the support of objective table, avoid adopting traditional cylinder lift mode to produce the human factor interference, avoided cylinder limit switch pine to take off the risk simultaneously. The clamping mechanism is matched with the objective table capable of instantaneously descending, so that the continuous falling state can be simulated, the test indexes are richer and more diverse, the test height can be adjusted without manual multiple clamping, and the method is more convenient and faster. The horizontal feeding mechanism makes horizontal feeding motion, can drive the second clamping group to make reciprocating feeding motion synchronously, can clamp the sample to be tested when the second clamping group is close to the first clamping group, can loosen the sample to be tested to realize drop test when the second clamping group is far away from the first clamping group, and can be adapted to the clamping of the sample machines to be tested with various dimensions by automatically adjusting the distance between the first clamping group and the second clamping group. Through the process, the drop test machine can simulate a continuous drop state without manually clamping and adjusting different test heights for multiple times, is more convenient and faster, and makes test indexes richer and more diverse.
Drawings
Fig. 1 is a schematic diagram of an overall structure of a drop tester capable of simulating continuous drops according to an embodiment of the present invention;
FIG. 2 is an enlarged schematic view of the drop tester capable of simulating a continuous drop at section A of FIG. 1;
FIG. 3 is an enlarged schematic view of the drop tester capable of simulating a continuous drop at section B of FIG. 1;
fig. 4 is a schematic partial structural diagram of a drop tester capable of simulating a continuous drop according to an embodiment of the present invention.
In the figure:
1. an object stage; 2. a clamping mechanism; 21. a first clamping group; 211. a first connecting rod; 212. a first guide bar group; 213. a first positioning and clamping plate; 22. a second clamping group; 221. a second connecting rod; 222. a second guide bar group; 223. a second positioning and clamping plate; 23. a horizontal feed mechanism; (ii) a 231. A guide rail slider group; 232. a ball screw transmission set; 3. a drive mechanism; 4. a set of support rods; 5. an eccentric wheel set; 51. a spiral arc surface; 52. a plane; 6. a linear bearing assembly; 7. an elastic member; 8. an electric cabinet; 9. and a guide block group.
Detailed Description
The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.
As shown in fig. 1 to 4, in the drop test machine capable of simulating continuous drop provided in this embodiment, in order to enable the drop test machine to simulate a continuous drop state without manually clamping and adjusting different test heights for multiple times, the drop test machine is more convenient and faster, and the test indexes are richer and more diverse. Further, the drop test machine capable of simulating continuous drop comprises an objective table 1 for bearing a sample machine to be tested and a clamping mechanism 2 for clamping the sample machine to be tested, the drop test machine capable of simulating continuous drop further comprises a driving mechanism 3, a supporting rod group 4 and an eccentric wheel group 5, a power output end of the driving mechanism 3 is in transmission connection with a power output end of the supporting rod group 4 through the eccentric wheel group 5, the power output end of the supporting rod group 4 is abutted against the bottom surface of the objective table 1, after the sample machine to be tested drops from the clamping mechanism 2 to the objective table 1, the supporting rod group 4 can drive the objective table 1 to perform instantaneous drop motion, so that the sample machine to be tested realizes continuous drop test, the clamping mechanism 2 comprises a first clamping group 21, a second clamping group 22 and a horizontal feeding mechanism 23, the first clamping group 21 and the second clamping group 22 are distributed in parallel, and a power output end of the horizontal feeding mechanism 23 is fixedly connected with the second clamping group 22, the horizontal feeding mechanism 23 can drive the second clamping group 22 to perform reciprocating feeding motion, and the horizontal feeding mechanism is matched with the first clamping group 21 to clamp or release the sample machine to be tested. The power output end of the driving mechanism 2 rotates to drive the eccentric wheel group 5 to rotate, so as to drive the supporting rod group 4 to do reciprocating lifting motion along the vertical direction and drive the objective table 1 to do reciprocating lifting motion. After the user places the model machine that awaits measuring on objective table 1, promote bracing piece group 4 and objective table 1 through eccentric wheelset 5 and rise when the peak, later because the eccentricity drop of eccentric wheelset 5, can drive bracing piece group 4 and objective table 1 instant whereabouts, the drop height of whereabouts is the eccentric distance of eccentric wheelset 5, after the model machine that awaits measuring falls to objective table 1 from clamping mechanism 2, bracing piece group 4 can drive objective table 1 and make the instantaneous descending motion, make the model machine that awaits measuring realize the test of falling in succession, and then accomplish the test of falling in succession to the electronic product. Adopt actuating mechanism 3 to carry out synchro control to the rotation of eccentric wheelset 5, and then carry out synchro control to the elevating movement of bracing piece group 4, guarantee to go up and down highly uniform, and then more steady reliable to the support of objective table 1, avoid adopting traditional cylinder lift mode to produce the human factor interference, avoided cylinder limit switch pine to take off the risk simultaneously. The clamping mechanism 2 is matched with the objective table 1 capable of instantaneously descending to simulate a continuous falling state, so that the test indexes are richer and more diverse, the test height is adjusted without manual multiple clamping, and the method is more convenient and faster. The horizontal feeding mechanism 23 performs horizontal feeding motion, can drive the second clamping group 22 to perform reciprocating feeding motion synchronously, can clamp a sample to be tested when the second clamping group 22 is close to the first clamping group 21, can release the sample to be tested to realize a drop test when the second clamping group 22 is far away from the first clamping group 21, and can adapt to the clamping of sample machines to be tested with various dimensions by automatically adjusting the distance between the first clamping group 21 and the second clamping group 22. Through the process, the drop test machine can simulate a continuous drop state without manually clamping and adjusting different test heights for multiple times, is more convenient and faster, and makes test indexes richer and more diverse.
Preferably, the outer circumferential surface of the eccentric wheel set 5 is formed by connecting at least one section of spiral arc surface 51 and at least one section of plane 52, so that the eccentric wheel set 5 forms at least one section of eccentric distance, so that the eccentric wheel set 5 can drive the supporting rod set 4 and the object stage 1 to complete instant falling, and the falling height of the falling is the eccentric distance of the eccentric wheel set 5. When the eccentric wheel set 5 has a multi-segment spiral arc surface 51 and a multi-segment plane surface 52, the object stage 1 can realize multi-segment instantaneous falling.
Preferably, the horizontal feeding mechanism 23 comprises a guide rail sliding block group 231 and a ball screw transmission group 232, a nut end of the ball screw transmission group 232 is fixedly connected with a sliding block end of the guide rail sliding block group 231, the ball screw transmission group 232 performs spiral transmission, and the second clamping group 22 can be driven by the sliding block end of the guide rail sliding block group 231 to perform reciprocating sliding on the guide rail end of the guide rail sliding block group 231, so that the second clamping group 22 is matched with the first clamping group 21 to clamp or loosen the sample machine to be tested. When the slider end of the guide rail slider group 231 drives the second clamping group 22 to approach the first clamping group 21, a sample to be tested can be clamped, and when the slider end of the guide rail slider group 231 drives the second clamping group 22 to be far away from the first clamping group 21, the sample to be tested can be loosened to realize a drop test, so that the distance between the first clamping group 21 and the second clamping group 22 can be stably and reliably automatically adjusted, and the sample to be tested can be adapted to clamping of sample machines with various sizes and specifications. Through the process, the clamping mechanism 2 can stably and reliably adjust the distance between the clamping groups to adapt to the sample machines to be tested with various sizes and specifications.
Preferably, the first clamping group 21 includes a first connecting rod 211, a first guide rod group 212, and at least one first positioning clamping plate 213, an end of the first connecting rod 211 is fixedly connected to one end of the first guide rod group 212, and the first positioning clamping plate 213 is detachably connected to an outer circumferential surface of the first guide rod group 212 to clamp the sample machine to be tested. The first connecting rod 211 is used to connect the first positioning and clamping plate 213 with the first guide rod set 212, the first positioning and clamping plate 213 is used to clamp and position the sample to be tested, and the first guide rod set 212 plays a role in supporting and balancing.
Preferably, the second clamping group 22 includes a second connecting rod 221, a second guide rod group 222 and at least one second positioning clamping plate 223, an end of the second connecting rod 221 is fixedly connected with one end of the second guide rod group 222, the other end of the second guide rod group 222 passes through a slider end of the guide rail slider group 231, and the second positioning clamping plate 223 is detachably connected with an outer circular surface of the second guide rod group 222 to clamp the sample machine to be tested. The second connecting rod 221 is used to connect the second positioning clamping plate 223 with the second guide rod set 222, the second positioning clamping plate 223 is used to clamp and position the sample to be tested, and the second guide rod set 222 plays a role in supporting and balancing. The ball screw transmission set 32 performs screw transmission, and the slider end of the guide rail slider set 231 can drive the second guide rod set 222 to perform reciprocating sliding on the guide rail end of the guide rail slider set 231, so as to drive the second connecting rod 221 and the second positioning clamping plate 223 to perform feeding motion synchronously, so that the second clamping set 22 and the first clamping set 21 cooperate to clamp or loosen a sample to be tested.
Preferably, a linear bearing assembly 6 is sleeved on the outer circular surface of the support rod set 4, the support rod set 4 can slide in the linear bearing assembly 6 in a reciprocating manner along the axial direction, one end of the support rod set 4 abuts against the outer circular surface of the eccentric wheel set 5, and the other end of the support rod set 4 penetrates through the linear bearing assembly 6 and abuts against the bottom surface of the object stage 1. The eccentric wheel group 5 rotates to drive the support rod group 4 to slide in the linear bearing group 6 in a reciprocating manner along the axial direction, and further drive the objective table 1 to synchronously perform reciprocating lifting movement, so as to complete the drop test. Wherein, the linear bearing assembly 6 is used for supporting and limiting the supporting rod set 4.
Preferably, the outer circular surface of the support rod group 4 is sleeved with an elastic member 7 for buffering and damping. By arranging the elastic member 7, the impact force applied to the strut assembly 4 can be buffered and damped.
Preferably, the drop test machine capable of simulating continuous dropping further comprises an electric cabinet 8, and the signal end of the driving mechanism 3 and the signal end of the horizontal feeding mechanism 23 are electrically connected with the signal end of the electric cabinet 8 respectively. The electric cabinet 8 can perform parameter communication, reading motion data and controlling the driving mechanism 3 and the horizontal feeding mechanism 23 through a PLC controller, and the electric cabinet 8 can also set test parameters through a text display. Through the process, the movement parameters of the drop test machine capable of simulating continuous drop can be set and automatically controlled.
Preferably, one end of the first guide bar set 212 passes through the guide bar set 9. The guide block set 9 plays a supporting and guiding role for the first guide rod set 212.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the spirit and scope of the invention. The present invention is not to be limited by the specific embodiments disclosed herein, and other embodiments that fall within the scope of the claims of the present application are intended to be within the scope of the present invention.
Claims (7)
1. The utility model provides a can simulate machine of falling that falls in succession, includes objective table (1) that is used for accepting the model machine that awaits measuring and clamping mechanism (2) that are used for the model machine that awaits measuring, its characterized in that:
the drop test machine capable of simulating continuous drop further comprises a driving mechanism (3), a support rod group (4) and an eccentric wheel group (5);
the power output end of the driving mechanism (3) is in transmission connection with the power output end of the supporting rod group (4) through the eccentric wheel group (5), and the power output end of the supporting rod group (4) is abutted against the bottom surface of the objective table (1);
when the sample machine to be tested falls from the clamping mechanism (2) to the objective table (1), the support rod group (4) can drive the objective table (1) to make instantaneous descending motion, so that the sample machine to be tested realizes continuous drop test;
the clamping mechanism (2) comprises a first clamping group (21), a second clamping group (22) and a horizontal feeding mechanism (23);
the first clamping group (21) and the second clamping group (22) are distributed in parallel, the power output end of the horizontal feeding mechanism (23) is fixedly connected with the second clamping group (22), the horizontal feeding mechanism (23) can drive the second clamping group (22) to do reciprocating feeding motion, and the horizontal feeding mechanism is matched with the first clamping group (21) to clamp or loosen a sample machine to be tested;
the horizontal feeding mechanism (23) comprises a guide rail sliding block group (231) and a ball screw transmission group (232);
the nut end of the ball screw transmission group (232) is fixedly connected with the slider end of the guide rail slider group (231);
the ball screw transmission group (232) performs spiral transmission, and the second clamping group (22) can be driven by the slide block end of the guide rail slide block group (231) to perform reciprocating sliding on the guide rail end of the guide rail slide block group (231), so that the second clamping group (22) is matched with the first clamping group (21) to clamp or loosen a sample machine to be tested;
the second clamping group (22) comprises a second connecting rod (221), a second guide rod group (222) and at least one second positioning clamping plate (223);
the end part of the second connecting rod (221) is fixedly connected with one end of the second guide rod group (222), and the other end of the second guide rod group (222) penetrates through the sliding block end of the guide rail sliding block group (231);
the second positioning clamping plate (223) is detachably connected with the outer circular surface of the second guide rod group (222) so as to clamp a sample machine to be tested;
the second positioning clamping plate (223) is L-shaped.
2. The drop tester capable of simulating continuous drops according to claim 1, wherein:
the excircle surface of the eccentric wheel set (5) is formed by mutually connecting at least one section of spiral cambered surface (51) and at least one section of plane (52).
3. The drop tester capable of simulating continuous drops according to claim 1, wherein:
the first clamping group (21) comprises a first connecting rod (211), a first guide rod group (212) and at least one first positioning clamping plate (213);
the end part of the first connecting rod (211) is fixedly connected with one end of the first guide rod group (212);
the first positioning clamping plate (213) is detachably connected with the outer circular surface of the first guide rod group (212) so as to clamp a sample machine to be tested.
4. The drop testing machine capable of simulating continuous drops according to claim 1, wherein:
a linear bearing assembly (6) is sleeved on the outer circular surface of the support rod group (4);
the support rod group (4) can slide in a reciprocating manner in the linear bearing assembly (6) along the axial direction;
one end of the support rod group (4) is abutted against the outer circular surface of the eccentric wheel group (5), and the other end of the support rod group (4) penetrates through the linear bearing assembly (6) to be abutted against the bottom surface of the objective table (1).
5. The drop tester capable of simulating continuous drops according to claim 1, wherein:
and an elastic piece (7) for buffering and damping is sleeved on the outer circular surface of the support rod group (4).
6. The drop tester capable of simulating continuous drops according to claim 1, wherein:
the drop tester capable of simulating continuous drop also comprises an electric cabinet (8);
and the signal end of the driving mechanism (3) and the signal end of the horizontal feeding mechanism (23) are respectively and electrically connected with the signal end of the electric cabinet (8).
7. The drop tester capable of simulating continuous drops according to claim 3, wherein:
one end of the first guide rod group (212) penetrates through the guide block group (9).
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| CN202010618790.5A CN111707436B (en) | 2020-06-30 | 2020-06-30 | Drop test machine capable of simulating continuous drop |
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| CN202010618790.5A CN111707436B (en) | 2020-06-30 | 2020-06-30 | Drop test machine capable of simulating continuous drop |
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| CN111707436B true CN111707436B (en) | 2022-05-10 |
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| CN113686532A (en) * | 2021-08-09 | 2021-11-23 | 杨全光 | Multi-mode mobile phone collision test equipment |
| US11933693B1 (en) * | 2022-03-29 | 2024-03-19 | Wing Aviation Llc | Drop test apparatus |
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