CN113588193A - Impact property experimental device - Google Patents
Impact property experimental device Download PDFInfo
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- CN113588193A CN113588193A CN202110832025.8A CN202110832025A CN113588193A CN 113588193 A CN113588193 A CN 113588193A CN 202110832025 A CN202110832025 A CN 202110832025A CN 113588193 A CN113588193 A CN 113588193A
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- 238000012360 testing method Methods 0.000 claims abstract description 49
- 238000002474 experimental method Methods 0.000 claims abstract description 20
- 238000009863 impact test Methods 0.000 claims abstract description 18
- 230000007246 mechanism Effects 0.000 claims description 75
- 230000005540 biological transmission Effects 0.000 claims description 44
- 238000009434 installation Methods 0.000 abstract description 4
- 230000003028 elevating effect Effects 0.000 description 8
- 241000251131 Sphyrna Species 0.000 description 7
- 238000004804 winding Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
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- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
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- 230000003139 buffering effect Effects 0.000 description 1
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- 238000001514 detection method Methods 0.000 description 1
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- 238000005516 engineering process Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
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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
- G01M7/08—Shock-testing
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/30—Investigating strength properties of solid materials by application of mechanical stress by applying a single impulsive force, e.g. by falling weight
- G01N3/303—Investigating strength properties of solid materials by application of mechanical stress by applying a single impulsive force, e.g. by falling weight generated only by free-falling weight
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Abstract
The invention relates to the technical field of impact experiments, and provides an impact experiment device which comprises a bearing component, a power component, a hammer head component, a waveform generating component and a data acquisition device, wherein the power component, the hammer head component, the waveform generating component and the data acquisition device are all arranged on the bearing component, the hammer head component comprises a hammer head frame which is connected to the bearing component in a sliding mode, the power component is used for driving the hammer head frame to move along the height direction of the bearing component, the waveform generating component has elasticity and is located right below the hammer head frame, and the data acquisition device is used for acquiring test data of the hammer head component and the waveform generating component. The utility model provides an impact test device utilizes hammer head frame installation test work piece to carry out the free fall and realizes the impact experiment, adjusts impact velocity through the mounted position that sets up hammer head frame and test work piece to the great component of weight and volume and the less component of weight and volume all can utilize hammer head frame to carry out the impact experiment, through set up the whereabouts highly adjust impact velocity can, the commonality is higher.
Description
Technical Field
The invention relates to the technical field of impact tests, and particularly provides an impact test device.
Background
With the increase of the holding capacity of new energy vehicles, the safety problem of new energy vehicles is receiving more attention. The safety of the new energy automobile depends on the reliability of electronic elements and equipment of the new energy automobile, and particularly depends on the safety of key components such as a vehicle-mounted lithium battery. When a vehicle is in a collision accident, vehicle-mounted electrical components and equipment are subjected to huge acceleration, so that the safety of drivers and passengers is directly influenced, and although the appearance of the vehicle is not damaged, the functions and the service life of the vehicle are actually influenced. Under severe impact, the internal structure of the battery pack is easy to generate short circuit to cause fire, so that irreparable loss is caused. It can be said that power battery safety is the central importance of electric vehicle safety technology.
The conventional high-speed impact resistance detection means of the electric elements and the batteries adopts a high-speed sliding table, but the high-speed sliding table can only test smaller electric elements, and the test object is single and has lower universality. Meanwhile, the use cost and the maintenance cost of the high-speed sliding table are high.
Disclosure of Invention
The invention aims to provide an impact experimental device, and aims to solve the problems that an existing impact experimental device is single in test object and low in universality.
In order to achieve the purpose, the invention adopts the technical scheme that:
the application provides an impact experimental apparatus, including carrier assembly, and all install the power component on carrier assembly, the tup subassembly, subassembly and data acquisition device take place for the wave form, the tup subassembly includes sliding connection in carrier assembly's hammer head frame, power component is used for driving hammer head frame and removes along carrier assembly's direction of height, the subassembly takes place for the wave form has elasticity and is located hammer head frame under, data acquisition device is used for gathering the test data that subassembly took place for tup subassembly and wave form.
The invention has the beneficial effects that: the impact experiment device provided by the invention is installed by utilizing the bearing component, the hammerhead frame of the hammerhead component is controlled by the power component to carry a test workpiece to slide on the bearing component so as to enable the hammerhead frame to slide to a specified height, then the hammerhead frame is enabled to freely fall on the bearing component so as to hit the waveform generating component, the hammerhead frame carries the test workpiece to impact and bounce after extruding the waveform generating component, pulse waves generated by the elastic waveform generating component are collected according to the data acquisition device, and meanwhile, the waveform and the workpiece damage condition are compared to obtain the impact resistance of the test workpiece. The utility model provides an impact test device utilizes hammer head frame installation test work piece to carry out the free fall and realizes the impact experiment, adjusts impact velocity through the mounted position that sets up hammer head frame and test work piece to the great component of weight and volume and the less component of weight and volume all can utilize hammer head frame to carry out the impact experiment, through set up the whereabouts highly adjust impact velocity can, the commonality is higher.
In one embodiment, the power assembly comprises a lifting mechanism arranged along the height direction of the bearing assembly and a driving mechanism arranged on the bearing assembly and connected to the lifting mechanism, and the hammer head frame is connected to the lifting mechanism.
Through adopting foretell technical scheme, power component divide into elevating system and actuating mechanism, and actuating mechanism is used for driving elevating system and carries out elevating movement, and elevating system then is used for driving the tup frame and moves on load-carrying members's direction of height to in with load-carrying members lifting to appointed height carry out the impact nature experiment of free fall.
In one embodiment, the lifting mechanism comprises a chain transmission mechanism arranged along the height direction of the bearing assembly and a traction guide block arranged on the chain transmission mechanism and matched with the hammer head frame, and the driving mechanism is connected with the chain transmission mechanism.
By adopting the technical scheme, the chain transmission mechanism is arranged along the height direction of the bearing assembly, when the driving mechanism drives the chain transmission mechanism to operate, the chain transmission mechanism can transmit in the height direction of the bearing assembly, and therefore the traction guide block arranged on the chain transmission mechanism can move in the height direction of the bearing assembly to lift the hammer head frame.
In one embodiment, the lifting mechanism further comprises a traction bracket mounted on the traction guide block, and the traction bracket is provided with a cushion pad.
Through adopting foretell technical scheme, pull the support through installing on pulling the guide block and come the lifting hammer headstock, simultaneously, set up the blotter on pulling the support in order to avoid hammer headstock and pull the support and take place the rigidity collision and cause the damage.
In one embodiment, the hammer head assembly comprises a hammer head guide block connected with the bearing assembly in a sliding mode and a hammer head frame installed on the hammer head guide block, and the hammer head guide block moves in the height direction of the bearing assembly through driving of the power assembly.
Through adopting foretell technical scheme, power component moves in the direction of height of carrier assembly through the drive tup guide block, and the tup frame that is connected with the tup guide block moves in the direction of height of carrier assembly simultaneously.
In one embodiment, the hammer head assembly further comprises a release device mounted on the hammer head guide block and used for clamping or releasing the bearing assembly.
Through adopting foretell technical scheme, through set up release on the tup guide block, after power component with tup guide block and tup lifting to appointed height, release can clamp down on bearing component so that tup guide block and tup frame keep at current height, when the free fall needs carry out, release bearing component so that tup guide block and tup frame carry out the free fall.
In one embodiment, the wave generating assembly includes a resilient member mounted on the carrier assembly for resilient impact with the hammer head frame.
Through adopting foretell technical scheme, utilize the elastic component to carry out elastic collision with the tup frame of installing the test work piece for the elastic component can produce the pulse wave so that collect, and the elastic component can also be played the tup frame of installing the test work piece in order to collect corresponding data simultaneously.
In one embodiment, the impact testing apparatus further comprises a controller electrically connected to the power assembly, the hammer head assembly and the data acquisition device, respectively.
Through adopting foretell technical scheme, through setting up the controller, can control convenient operation respectively to power component, tup subassembly and data acquisition device through the controller.
In one embodiment, the bearing assembly comprises a base, a bearing upright post installed on the base and a mounting frame erected on the bearing upright post, the power assembly and the data acquisition device are respectively installed on the mounting frame, the hammer head frame is connected to the bearing upright post in a sliding mode, and the waveform generation assembly is installed on the base.
Through adopting foretell technical scheme, utilize and bear the stand and install the hammer head frame to make the hammer head frame can move on the direction of height that bears the stand, and can bump with the wave form emergence subassembly on the base, power component installs and drives the hammer head frame on the mounting bracket, and data acquisition device installs and collects the data of experiment on the mounting bracket.
In one embodiment, the bearing assembly further comprises a guide rod mounted on the bearing upright in the height direction, and the hammer head frame is slidably connected with the guide rod.
Through adopting foretell technical scheme, through set up the guide bar on bearing the stand, the tup frame can move more steadily on bearing the stand according to the guidance quality of guide bar to stability and accuracy in test data.
In one embodiment, a height sensing device is mounted on the load-bearing upright.
Through adopting foretell technical scheme, utilize high induction system to detect the height of drawing the guide block to in control the experiment step.
In one embodiment, the hammer head assembly further comprises an adapter plate mounted on the hammer head frame and used for mounting a test workpiece.
Through adopting foretell technical scheme, through at the tup frame installation keysets, utilize the keysets to install the test piece, it is more convenient to install.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed for the embodiments or the prior art descriptions 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 it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic structural diagram of an impact testing apparatus provided in an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a hammer head assembly, a waveform generating assembly and a partial power assembly according to an embodiment of the present invention;
FIG. 3 is an enlarged view of a portion of FIG. 2;
FIG. 4 is a front view of a hammer head assembly, a waveform generation assembly, and a partial power assembly provided in accordance with an embodiment of the present invention;
FIG. 5 is an enlarged view of a portion of FIG. 4 at B;
fig. 6 is a schematic structural diagram of a part of the power assembly according to the embodiment of the present invention.
Wherein, in the figures, the respective reference numerals:
100. an impact test device; 200. testing the workpiece; 10. a load bearing assembly; 11. a base; 12. a load bearing column; 13. a mounting frame; 14. a limiting block; 15. a guide bar; 16. a height sensing device; 20. a power assembly; 21. a lifting mechanism; 211. a chain transmission mechanism; 211a, a transmission chain; 211b, a drive sprocket; 211c, a driven sprocket; 212. a traction guide block; 213. a traction support; 214. a cushion pad; 215. a chain guide; 22. a drive mechanism; 221. a drive motor; 222. a drive shaft; 30. a hammerhead assembly; 31. a hammer head frame; 32. a hammer head guide block; 33. a release device; 34. a drag chain; 35. a hammerhead guide bracket; 36. an adapter plate; 40. a waveform generating component; 41. an elastic member; 42. a base; 43. a fixed mount; 50. a data acquisition device.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Referring to fig. 1, the present application provides an impact experimental apparatus 100, which includes a bearing assembly 10, and a power assembly 20, a hammer head assembly 30, a waveform generating assembly 40 and a data collecting device 50 all mounted on the bearing assembly 10, wherein the hammer head assembly 30 includes a hammer head frame 31 slidably connected to the bearing assembly 10, the power assembly 20 is configured to drive the hammer head frame 31 to move along a height direction of the bearing assembly 10, the waveform generating assembly 40 has elasticity and is located right below the hammer head frame 31, and the data collecting device 50 is configured to collect test data of the hammer head assembly 30 and the waveform generating assembly 40.
In operation, a test workpiece 200 is mounted on the hammer head frame 31, and the power assembly 20 is used to drive the hammer head frame 31 to move. After the power assembly 20 elevates the hammer head frame 31 to a designated height along the height direction of the carrier assembly 10, the hammer head frame 31 and the test workpiece 200 freely fall by their own weight and collide with the bottom waveform generating assembly 40. After the hammer head frame 31 provided with the test workpiece 200 collides with the waveform generating assembly 40, the hammer head frame 31 is bounced, the waveform generating assembly 40 with elasticity bounces back and forth according to the elasticity of the waveform generating assembly 40 to generate pulse waves, the data acquisition device 50 arranged on the bearing assembly 10 can acquire related experimental data, and meanwhile, the impact resistance of the test workpiece 200 can be acquired by comparing the damage condition of the test workpiece 200. The waveform generating assembly 40 has elasticity, when a collision occurs, the waveform generating assembly 40 is collided and compressed by the hammer head frame 31, after the hammer head frame 31 is bounced, the waveform generating assembly 40 generates fluctuation until the waveform generating assembly recovers, and at the moment, waveform data generated by the waveform generating assembly 40 can be collected by the data acquisition device 50, so that impact test analysis on the test workpiece 200 is realized. Specifically, the data acquisition device 50 includes a speed sensor, a distance sensor, an acceleration sensor, and the like, and various parameters are monitored and collected by these sensors.
The impact experimental device 100 provided by the invention utilizes the bearing component 10 as a supporting body, controls the hammer head frame 31 of the hammer head component 30 to carry the test workpiece 200 to move on the bearing component 10 through the power component 20 so as to enable the hammer head frame 31 to move to a specified height, then enables the hammer head frame 31 to freely fall on the bearing component 10 so as to hit the waveform generating component 40, enables the hammer head frame 31 to carry the test workpiece 200 to impact and press the waveform generating component 40 and then bounce, collects pulse waves generated by the waveform generating component 40 according to the data acquisition device 50, and compares the waveform with the workpiece damage condition to obtain the impact resistance of the test workpiece 200. Adopt the impact nature experimental apparatus 100 of this application, can enough experiment volume and the great work piece of weight, also can experiment volume and the less work piece of weight simultaneously, only need adjust the height of hammer head frame 31 to the speed of subassembly 40 takes place for the impact waveform when adjustment hammer head frame 31 and test work piece 200 whereabouts. That is, the impact experiment apparatus 100 of the present application has high versatility, and is suitable for impact experiments of various test workpieces 200.
Referring to fig. 1, in one embodiment, the power assembly 20 includes a lifting mechanism 21 installed along the height direction of the bearing assembly 10, and a driving mechanism 22 installed on the bearing assembly 10 and connected to the lifting mechanism 21, wherein the lifting mechanism 21 is connected to the hammer head frame 31. The elevating mechanism 21 is mounted on the carrier assembly 10 in the height direction so that the hammer head frame 31 connected to the elevating mechanism 21 can be driven and moved in the height direction of the carrier assembly 10 when the elevating mechanism 21 is driven by the driving mechanism 22.
In the first embodiment of the present invention, the lifting mechanism 21 is a lifting table, the driving mechanism 22 is a lifting rod connected to the lifting table, and the lifting rod extends and retracts a piston to pull the lifting table to move up and down, so that the lifting table can lift the hammer head 31 to a specified height.
In the second embodiment of the present embodiment, the lifting mechanism 21 is a sliding traction block slidably connected to the bearing assembly 10 along the height direction, and the driving mechanism 22 is a winding motor connected to the sliding traction block through a winding wire, so that the winding motor can drive and wind the winding wire to lift the sliding traction block, and the sliding traction block achieves the effect of lifting the hammer head frame 31.
In the third embodiment of the present embodiment, the lifting mechanism 21 is a chain transmission mechanism, and the driving mechanism 22 includes a driving motor and a rotating shaft drivingly connected to an output shaft of the driving motor, and the rotating shaft is connected to the chain transmission mechanism. The hammer head 31 is driven to move in the height direction of the bearing assembly 10 by a driving motor driving chain transmission mechanism.
In the fourth embodiment of the present embodiment, the lifting mechanism 21 is a belt transmission mechanism, and the driving mechanism 22 includes a driving motor and a rotating shaft that is connected to an output shaft of the driving motor in a transmission manner, and the rotating shaft is connected to the belt transmission mechanism. The hammer head frame 31 is driven to move in the height direction of the bearing assembly 10 by a driving motor driving a belt transmission mechanism.
Referring to fig. 1 to 3 and 6, in one embodiment, the lifting mechanism 21 includes a chain transmission mechanism 211 disposed along the height direction of the carriage assembly 10 and a traction guide block 212 disposed on the chain transmission mechanism 211 and cooperating with the hammer head frame 31, and the driving mechanism 22 is connected to the chain transmission mechanism 211. The chain transmission mechanism 211 includes a driving sprocket 211b disposed at a higher position along the height direction of the carrier assembly 10, a driven sprocket 211c disposed at a lower position along the height direction of the carrier assembly 10, and a transmission chain 211a wound around the driving sprocket 211b and the driven sprocket 211 c. In order to make the driving chain 211a run smoothly, chain guide rails 215 may be further provided on both sides of the driving chain 211a to limit the running track of the driving chain 211 a. The traction guide block 212 is connected to the transmission chain 211a, and when the driving sprocket 211b drives the transmission chain 211a to operate, the transmission chain 211a can drive the traction guide block 212 to move in the height direction of the bearing assembly 10, so that the traction guide block 212 can jack up the matched hammer head frame 31 to be lifted. The driven sprocket 211c may be a tension sprocket to tension the driving chain 211 a. In this embodiment, the driving mechanism 22 includes a driving motor 221 and a transmission shaft 222 in transmission connection with the driving motor 221, and the transmission shaft 222 is in transmission connection with the driving sprocket 211 b. It can be understood that, in order to improve the stability, the number of the chain transmission mechanisms 211 is two, and the two chain transmission mechanisms 211 are symmetrically disposed on the carrying assembly 10, the driving chain 211a of each chain transmission mechanism 211 is provided with the traction guide block 212 engaged with the hammer head frame 31, the driving motor 221 is in driving connection with the middle portion of the driving shaft 222, and the opposite ends of the driving shaft 222 are respectively in driving connection with the driving sprockets 211b of the two chain transmission mechanisms 211 for synchronous driving. Therefore, when the driving motor 221 operates, the driving motor 221 controls the two sets of chain transmission mechanisms 211 to operate simultaneously through the transmission shaft 222, and the two symmetrical traction guide blocks 212 also synchronously abut against the hammer head frame 31 to lift the hammer head frame 31, i.e. the hammer head frame 31 operates more stably on the bearing assembly 10.
Referring to fig. 1, 4 and 5, in one embodiment, the lifting mechanism 21 further includes a traction bracket 213 mounted on the traction guide block 212, and a cushion 214 is disposed on the traction bracket 213. The pulling bracket 213 is mounted on the pulling guide block 212, and when the pulling guide block 212 moves upward along the carrier assembly 10, the pulling bracket 213 can abut against the hammer head frame 31 and lift the hammer head frame 31. By installing the traction bracket 213 for lifting the hammer head frame 31 on the traction guide block 212, the contact area of the traction bracket 213 and the hammer head frame 31 is larger, and the lifting hammer head frame 31 moves more smoothly. Meanwhile, a cushion 214 is provided on the traction bracket 213 to prevent the hammer head frame 31 from rigidly colliding with the traction bracket 213 to cause damage. Specifically, the cushion pad 214 may employ a rubber block, a foam block, or the like.
Referring to fig. 1 to 5, in one embodiment, the hammer head assembly 30 includes a hammer head guide block 32 slidably connected to the carriage assembly 10 and a hammer head frame 31 mounted on the hammer head guide block 32, and the hammer head guide block 32 is driven by the power assembly 20 to move in the height direction of the carriage assembly 10. The hammer head guide block 32 is slidably connected to the carriage assembly 10, so that the hammer head guide block 32 can slide in the height direction of the carriage assembly 10, and the power assembly 20 can drive the hammer head guide block 32 to slide, so that the hammer head frame 31 connected to the hammer head guide block 32 can be driven to change the height. It can be understood that, in order to facilitate the smooth movement of the hammer head frame 31, at least two hammer head guide blocks 32 may be mounted on the hammer head frame 31, and each hammer head guide block 32 is slidably connected to the carrying assembly 10 and connected to the power assembly 20, for example, the hammer head guide blocks 32 are respectively disposed at two opposite ends of the hammer head frame 31. The hammer head frame 31 is not limited in structure, and may be a flat-plate-type frame, a block-type frame, or a special-shaped frame, for example, only the hammer head frame 31 can be used for mounting the test workpiece 200 and connecting the hammer head guide block 32.
Referring to fig. 1 to 5, in one embodiment, the hammer head assembly 30 further includes a release device 33 mounted on the hammer head guide block 32 and used for clamping or releasing the carriage assembly 10. The clamp release device 33 may be a clamp, and the clamp has release and locking functions. After the power device lifts the hammer head guide block 32 and the hammer head frame 31 to the designated height, the caliper is controlled to be locked on the bearing component 10, and then the hammer head guide block 32 and the hammer head frame 31 are locked at the current height; when the hammer head frame 31 is required to fall, the caliper is controlled to release the carrier assembly 10, so that the hammer head frame 31 and the hammer head guide block 32 fall according to their own weight to strike the waveform generation assembly 40. Specifically, the release device 33 is mounted on the hammer head guide block 32 and moves together with the hammer head guide block 32, and in order to protect the connection cable of the release device 33, a drag chain 34 is mounted on the carriage assembly 10, and one end of the drag chain 34 is connected to the drag guide block 212 and wraps the connection cable for protection. Specifically, a hammer head guide bracket 35 is further mounted on the hammer head guide block 32, and the release device 33 is mounted through the hammer head guide bracket 35.
Referring to fig. 1 to 5, in one embodiment, the waveform generating assembly 40 includes an elastic member 41 mounted on the bearing assembly 10 and configured to elastically collide with the hammer head frame 31. The elastic member 41 elastically collides with the hammer head frame 31 on which the test workpiece 200 is mounted, so that the elastic member 41 can generate a pulse wave for collection, and at the same time, the elastic member 41 can also bounce the hammer head frame 31 on which the test workpiece 200 is mounted to collect corresponding data. The waveform generating assembly 40 further includes a base 42 for fixedly mounting the elastic member 41 and a fixing frame 43. The base 42 is fixedly installed on the supporting assembly 10, the elastic element 41 is installed on the base 42, and the elastic element 41 is fixedly supported by the fixing frame 43. For example, the elastic member 41 is a spring, the fixing frame 43 is installed on the base 42, then one end of the spring passes through the fixing frame 43 and is fixed on the base 42, the other end of the spring faces the hammer head frame 31 at the top, and the periphery along the length direction of the spring is limited by the fixing frame 43, so that data instability caused by low price generated when the spring is compressed is avoided. At the same time, the elastic elements 41 can also be combined by different numbers and properties of elastic elements, allowing different types and periods of impact pulses to be achieved.
In one embodiment, the impact testing apparatus 100 further comprises a controller electrically connected to the power assembly 20, the hammer head assembly 30 and the data acquisition device 50. Through setting up the controller, can control power component 20, tup subassembly 30 and data acquisition device 50 respectively through the controller, convenient operation.
Referring to fig. 1 to 6, in an embodiment, the bearing assembly 10 includes a base 11, a bearing upright 12 mounted on the base 11, and a mounting bracket 13 mounted on the bearing upright 12, the power assembly 20 and the data acquisition device 50 are respectively mounted on the mounting bracket 13, the hammer head bracket 31 is slidably connected to the bearing upright 12, and the waveform generating assembly 40 is mounted on the base 11. The power assembly 20 is arranged on the mounting frame 13 and drives the hammer head frame 31 on the bearing upright 12, so that the hammer head frame 31 moves along the height direction of the bearing upright 12. The hammer head frame 31 is lifted to a designated height and then allowed to freely fall, and collides with the waveform generating unit 40 mounted on the base 11, and various data of the entire process are collected by the data collecting device 50 to complete the experiment. In particular, a stop 14 may be provided at the bottom of the load-bearing upright 12 to mechanically stop the lowered position of the traction guide 212.
Referring to fig. 1 to 5, in one embodiment, the bearing assembly 10 further includes a guide rod 15 installed on the bearing upright 12 along the height direction, and the hammer head frame 31 is slidably connected to the guide rod 15. Through set up guide bar 15 on bearing stand 12, tup frame 31 can move more steadily on bearing stand 12 according to the guidance quality of guide bar 15 to test data's stability and accuracy.
Referring to fig. 1, 4 and 5, in one embodiment, a height sensing device 16 is mounted on the load-bearing upright 12. The height of the hammer head frame 31 is detected by the height sensing device 16, and when the hammer head frame 31 is detected to reach a specified height, the lifting operation of the hammer head frame 31 by the power assembly 20 can be stopped.
Referring to fig. 2, in one embodiment, the hammer head assembly 30 further includes an adapter plate 36 mounted on the hammer head frame 31 and used for mounting the test workpiece 200. Because the corresponding mounting hole is needed for fixing the test workpiece 200, the adapter plate 36 is connected with the test workpiece 200 by adopting the adapter plate 36, and then the adapter plate 36 provided with the test workpiece 200 is arranged on the hammer head, so that the mounting operation of the test workpiece 200 is more convenient.
Referring to fig. 1 to 6, in use, a bearing assembly 10 is first constructed, two symmetrical bearing columns 12 are installed on a base 11, a mounting frame 13 is installed on the top of the two bearing columns 12, and guide rods 15 are respectively installed on the two bearing columns 12 along the height direction. Wherein, when a higher load-bearing upright 12 is required, two or more sub-uprights can be connected in the height direction to form the load-bearing upright 12. After the installation of the bearing assembly 10 is completed, the waveform generating assembly 40 is installed on the base 11, the base 42 of the waveform generating assembly 40 can be installed on the base 11 by the anti-loose bolt for fixing, and then the fixing frame 43 and the elastic member 41 are installed on the base 42, and when a collision occurs, the base 11 is used for bearing the impact force generated by the collision. The two hammer head guide blocks 32 of the hammer head assembly 30 are respectively slidably connected to the corresponding guide rods 15, and the two hammer head guide blocks 32 are connected to the hammer head frame 31, so that the movement of the hammer head guide blocks 32 is driven by the movement of the two hammer head guide blocks 32. The hammer head guide block 32 is further provided with a clamp, and when the hammer head frame 31 is lifted to a designated height, the clamp is locked on the guide rod 15 of the bearing upright 12, so that the hammer head frame 31 carries the test workpiece 200 to stay at the designated height. Chain drive mechanisms 211 are respectively installed on the two bearing upright columns 12, a driving sprocket 211b of the chain drive mechanism 211 is arranged at the higher end of the bearing upright column 12, a driven sprocket 211c is arranged at the lower other end of the bearing upright column 12, and a traction guide block 212 is installed on the driven sprocket 211c to form the lifting mechanism 21. In particular, the traction guide block 212 may also be provided with a traction bracket 213 for better jacking up the hammer head 31. In order to protect the device, a cushion 214 is provided on the end side of the traction bracket 213 that contacts the hammer head frame 31, avoiding a rigid collision between the traction bracket 213 and the hammer head. A driving mechanism 22 is provided on the mounting frame 13 to drive the elevating mechanism 21. Firstly, the driving motor 221 is installed on the mounting frame 13, and then the output shaft of the driving motor 221 is in transmission connection with the transmission shafts 222 with both ends respectively connected to the two driving sprockets 211b in a transmission manner, so that the driving motor 221 can synchronously drive the two chain transmission mechanisms 211 to work. Meanwhile, the data collecting device 50 is also installed on the mounting frame 13 and collects the impact occurring therebelow and the pulse wave generated by the waveform generating assembly 40 for subsequent analysis.
Referring to fig. 1 to 6, in the experiment, the test workpiece 200 is firstly linked to the hammer head frame 31 through the adapter plate 36, and then the driving motor 221 is controlled to operate to drive the chain transmission mechanism 211 to operate, the transmission chain 211a drives the traction guide block 212 to move toward the high position, so that the traction support 213 on the traction guide block 212 abuts against the bottom of the hammer head frame 31 and pushes the hammer head frame 31 to lift. When the hammer head 31 is lifted to a designated height, the clamp locks on the guide bar 15 to lock the height of the hammer head 31 and the test workpiece 200 from falling. Meanwhile, since the moving track of the hammer head guide block 32 is the same as the moving track of the traction guide block 212, in order to avoid interference with the traction guide block 212 when the hammer head frame 31 and the hammer head guide block 32 fall freely, when the hammer head frame 31 and the hammer head guide block 32 are locked at the current height by the caliper, the traction guide block 212 is firstly moved down to a safe position at the bottom by driving the chain transmission mechanism 211 through the driving motor 221, for example, the height is lowered to be lower than the collision height of the waveform generation assembly 40, and then, an impact test is performed. The clamping release is controlled to release the guide rod 15, so that the hammer head frame 31 carrying the test workpiece 200 can freely fall, and meanwhile, the hammer head guide block 32 slides downwards on the guide rod 15, so that the falling stability of the hammer head frame 31 and the test workpiece 200 is ensured. The hammer head frame 31 drives the test work price to freely fall and impact on the elastic part 41 of the waveform generating assembly 40, and the elastic part 41 is compressed until the speed of the hammer head frame 31 is zero; at this time, the elastic member 41 starts to release the energy of the accumulated hammer head frame 31 and the test workpiece 200 to push up again. After the hammer head frame 31 and the test workpiece 200 are pushed up, when the speed approaches zero again, the clamp is started and locked on the guide rod 15, so that the hammer head frame 31 is locked, the secondary falling of the hammer head frame 31 is prevented from affecting the generation of pulse waves of the waveform generating assembly 40, and the data acquisition device 50 is prevented from being affected to acquire test data.
It can be understood that the impact experiment device 100 of the present application, except for the impact experiment that can be applicable to the battery field, also can be applicable to the impact experiment of multiple forms in the passive safety protection field of rail transit, elevator shaft buffering energy-absorbing device etc. trade.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. An impact experimental device is characterized in that: including the carrier assembly, and all install in power component, tup subassembly, wave form generation subassembly and data acquisition device on the carrier assembly, the tup subassembly include sliding connection in carrier assembly's tup frame, power component is used for the drive the tup frame is followed carrier assembly's direction of height removes, the wave form generation subassembly has elasticity and is located under the tup frame, data acquisition device is used for gathering the test data of subassembly is taken place to tup subassembly and wave form.
2. The impact testing apparatus of claim 1, wherein: the power assembly comprises a lifting mechanism and a driving mechanism, the lifting mechanism is installed along the height direction of the bearing assembly, the driving mechanism is installed on the bearing assembly and connected to the lifting mechanism, and the hammer head frame is connected to the lifting mechanism.
3. The impact testing apparatus of claim 2, wherein: the lifting mechanism comprises a chain transmission mechanism arranged along the height direction of the bearing assembly and a traction guide block which is arranged on the chain transmission mechanism and matched with the hammer head frame, and the output end of the driving mechanism is connected with the chain transmission mechanism.
4. The impact experimental apparatus according to claim 3, wherein: the lifting mechanism further comprises a traction support arranged on the traction guide block, and a cushion pad is arranged on the traction support.
5. The impact testing apparatus of claim 1, wherein: the hammer head assembly comprises a hammer head guide block connected with the bearing assembly in a sliding mode and a hammer head frame arranged on the hammer head guide block, and the hammer head guide block moves in the height direction of the bearing assembly through the driving of the power assembly.
6. The impact testing apparatus of claim 5, wherein: the hammer head assembly further comprises a releasing device which is arranged on the hammer head guide block and is used for clamping or releasing the bearing assembly.
7. The impact testing apparatus of claim 1, wherein: the waveform generating assembly comprises an elastic piece which is arranged on the bearing assembly and is used for elastically colliding with the hammer head frame.
8. The impact testing apparatus of claim 1, wherein: the impact experiment device further comprises a controller, and the controller is electrically connected with the power assembly, the hammer head assembly and the data acquisition device respectively.
9. The impact testing apparatus of claim 1, wherein: the bearing assembly comprises a base, a bearing stand column arranged on the base and a mounting rack erected on the bearing stand column, the power assembly and the data acquisition device are respectively arranged on the mounting rack, the hammer frame is connected to the bearing stand column in a sliding mode, and the waveform generation assembly is arranged on the base.
10. The impact testing apparatus of claim 9, wherein: the bearing assembly further comprises a guide rod arranged on the bearing upright post along the height direction, and the hammer head frame is connected to the guide rod in a sliding mode.
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| CN202110832025.8A CN113588193A (en) | 2021-07-22 | 2021-07-22 | Impact property experimental device |
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| CN202110832025.8A CN113588193A (en) | 2021-07-22 | 2021-07-22 | Impact property experimental device |
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| EP3591366A1 (en) * | 2017-02-28 | 2020-01-08 | Kokusai Keisokuki Kabushiki Kaisha | Collision simulation test apparatus and impact test apparatus |
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| CN212721976U (en) * | 2020-07-30 | 2021-03-16 | 中机寰宇(山东)车辆认证检测有限公司 | Secondary impact prevention braking device for battery impact test bed |
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| EP3591366A1 (en) * | 2017-02-28 | 2020-01-08 | Kokusai Keisokuki Kabushiki Kaisha | Collision simulation test apparatus and impact test apparatus |
| CN209055299U (en) * | 2018-11-28 | 2019-07-02 | 成都莱格斯睿科技有限责任公司 | A kind of testing stand suitable for the impact of battery acceleration |
| CN212721976U (en) * | 2020-07-30 | 2021-03-16 | 中机寰宇(山东)车辆认证检测有限公司 | Secondary impact prevention braking device for battery impact test bed |
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Application publication date: 20211102 |