CN117589603B - High-speed impact drop hammer testing machine - Google Patents
High-speed impact drop hammer testing machine Download PDFInfo
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- CN117589603B CN117589603B CN202410082341.1A CN202410082341A CN117589603B CN 117589603 B CN117589603 B CN 117589603B CN 202410082341 A CN202410082341 A CN 202410082341A CN 117589603 B CN117589603 B CN 117589603B
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- 238000012360 testing method Methods 0.000 title claims abstract description 75
- 230000006835 compression Effects 0.000 claims abstract description 61
- 238000007906 compression Methods 0.000 claims abstract description 61
- 230000005540 biological transmission Effects 0.000 claims abstract description 7
- 238000004088 simulation Methods 0.000 claims description 18
- 230000007246 mechanism Effects 0.000 claims description 11
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 10
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 10
- 241001330002 Bambuseae Species 0.000 claims description 10
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 10
- 239000011425 bamboo Substances 0.000 claims description 10
- 230000001133 acceleration Effects 0.000 claims description 9
- 239000000463 material Substances 0.000 abstract description 32
- 238000001514 detection method Methods 0.000 abstract description 8
- 238000009434 installation Methods 0.000 abstract description 8
- 230000005484 gravity Effects 0.000 abstract description 6
- 238000005381 potential energy Methods 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 7
- 239000000758 substrate Substances 0.000 description 5
- 230000001681 protective effect Effects 0.000 description 4
- 230000007704 transition Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000009863 impact test Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000001739 rebound effect Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000013100 final test Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
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- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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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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- 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
- G01N3/02—Details
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/0032—Generation of the force using mechanical means
- G01N2203/0039—Hammer or pendulum
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Abstract
The invention discloses a high-speed impact drop hammer testing machine, and belongs to the field of test detection equipment. The high-speed impact drop hammer testing machine comprises a base plate and an installation seat fixed on the end face of the base plate, wherein four support columns are fixedly connected to the top of the installation seat, an installation plate is fixedly connected to the top of each support column, a servo motor is fixedly connected to the top of each installation plate, a first screw rod is rotationally connected between two sides of the bottom of each installation plate and the installation seat, and the tops of the first screw rods on two sides penetrate through the installation seat and are in transmission connection with an output shaft of the servo motor through a first sprocket group; according to the invention, through the cooperation among the second screw rod, the compression sliding plate, the compression guide rod, the rebound sleeve rod, the compression block and the accelerating spring, the rebound sleeve rod acquires the potential energy of deformation rebound of the accelerating spring, so that the counterweight disc is applied with higher initial speed at the moment of being released, and larger gravity acting is obtained, thereby meeting the test requirements of different materials to be tested, and the application range of the device is improved.
Description
Technical Field
The invention relates to the technical field of test detection equipment, in particular to a high-speed impact drop hammer testing machine.
Background
The impact resistance of the material is the capability of measuring the force bearing capacity of the material when the material is subjected to impact load, and the drop hammer test is carried out on different materials, so that the impact resistance is an effective research means for grasping the characteristics of the material. The drop hammer impact tester is the most commonly used experimental equipment when the drop hammer impact test is carried out on materials. The basic principle is that the free falling speed is utilized to realize impact loading on a test piece, so that the response of materials and structures under the impact load effect is studied.
The falling weight impact testing machine with the publication number of CN110146393B comprises a rack, a guide rail vertically arranged on the rack, a falling weight slidingly connected on the guide rail and a falling weight lifting mechanism, wherein the guide rail is of a round rod-shaped structure, the falling weight is connected with a mounting seat sleeved on the guide rail, the mounting seat is provided with a positioning hole for the guide rail to pass through, and the inner diameter of the positioning hole is larger than the outer diameter of the guide rail; the guide rails are two and are symmetrically arranged on two sides of the mounting seat; the guide rail is provided with a guide block, the guide block comprises an upper guide section, a lower guide section and a transition section positioned in the middle, the outer diameter of the transition section is the same as the inner diameter of the positioning hole, and the outer diameter of the upper guide section gradually decreases from the transition section to be the same as the outer diameter of the guide rail; the outer diameter of the lower guide section gradually decreases downwards from the transition section until the outer diameter of the lower guide section is the same as the outer diameter of the guide rail; the guide block is connected to the guide rail in a height-adjustable manner. The invention can reduce the influence of the friction force of the guide rail on the drop hammer impact test.
For the prior patent, the following defects are also existed, namely, firstly, the falling speed of the falling weight cannot be increased continuously when the falling weight moves to the highest position and falls down, and the falling speed of the falling weight cannot be met when the deformation requirement of the material to be tested cannot be met, so that the limitation exists in the test, and the requirement of different material tests is difficult to meet; after the drop hammer falls and impacts, the drop hammer can rebound upwards due to interaction of forces, and then impact is continuously carried out on the material, so that the condition of multiple impacts of one test is caused, and the accuracy of a final test result is reduced. Therefore, a high-speed impact drop hammer testing machine is provided.
Disclosure of Invention
The invention aims to solve the problems that in the prior art, after a drop hammer moves to the highest position, the drop speed is difficult to increase again, so that the test has limitation and the requirements of different materials cannot be met; and the problem that the accuracy of the final test result is reduced due to the fact that rebound and re-impact occur after the drop hammer falls and impacts is solved.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the utility model provides a high-speed impact drop hammer testing machine, includes the base plate and fixes the mount pad at its terminal surface, four spinal branch daggers of mount pad top fixedly connected with, support column top fixedly connected with mounting panel, mounting panel top fixedly connected with servo motor, rotate between mounting panel bottom both sides and the mount pad and be connected with first lead screw, both sides first lead screw top runs through between the output shaft of mount pad and servo motor through first sprocket group transmission connection, both sides threaded connection has the lifting slider between the first lead screw, the bottom of lifting slider is provided with hammering subassembly, still includes: the accelerating mechanism is arranged on the lifting sliding block and is used for accelerating and impacting the hammering component; the locking assembly is arranged on the mounting seat and used for preventing the secondary impact of the hammering assembly from affecting the detection result.
For conveniently hammering, preferably, hammering subassembly includes first cylinder, first cylinder and lifting slider lateral wall fixed connection, lifting slider bottom rotates and is connected with the joint and colludes, the telescopic end fixedly connected with roating seat of first cylinder, the roating seat cup joints and colludes the tip and rotate rather than the adaptation, fixed connection spacing slide bar between mounting panel bottom and the mount pad, both sides sliding connection has the balance weight dish between the spacing slide bar, the joint colludes and the top joint of balance weight dish is fixed, balance weight dish bottom fixedly connected with impact rod.
In order to facilitate fixation, preferably, the surface of the substrate is fixedly connected with a carrying platform, and the periphery of the top of the carrying platform is fixedly connected with horizontal clamps.
Preferably, a first through groove is formed in the middle of the mounting seat, a second through groove is formed in the middle of the carrying platform, and the central axes of the first through groove, the second through groove and the impact rod coincide.
In order to improve hammering whereabouts initial velocity, preferably, acceleration mechanism includes the locating lever, the locating lever is fixed with lifting slider top, just the locating lever is provided with two along lifting slider symmetry, two fixedly connected with is with the roof that accelerates between the locating lever, it is connected with the second lead screw to accelerate to rotate between roof bottom both sides and the lifting slider, both sides threaded connection has the compression slide between the second lead screw, compression slide top fixedly connected with two compression section of thick bamboo, compression section of thick bamboo runs through the roof that accelerates and rather than sliding connection, compression section of thick bamboo inner wall sliding connection has compression piece, be connected with accelerating spring between compression section of thick bamboo top and the compression section of thick bamboo, compression piece middle part fixedly connected with spring loop bar, spring loop bar top fixedly connected with anticreep guide arm, just spring loop bar bottom runs through the lifting slider, acceleration roof terminal surface fixedly connected with driving motor, both sides the second lead screw top runs through acceleration roof and is connected with through second sprocket group transmission between driving motor's the output shaft.
Further, a first guide rod is fixedly connected between the bottom of the mounting plate and the mounting seat, and sequentially penetrates through the accelerating top plate, the compression sliding plate and the lifting sliding block and is in sliding connection with the accelerating top plate, and the compression cylinder is in sliding connection with the limiting sliding rod through the limiting sliding seat.
In order to improve test accuracy, preferably, the locking assembly includes the positioning seat, the positioning seat is provided with two sets of along first groove central symmetry, it is connected with the second cylinder to rotate on the positioning seat, the output of second cylinder rotates and is connected with the locking lever, the positioning seat both sides all rotate and are connected with the connecting rod, the one end that the positioning seat was kept away from to the connecting rod rotates and is connected with the locking seat, fixed connection between locking seat and the positioning seat, rotate between locking lever and the locking seat and be connected, and both sides distance between the locking lever is less than weight plate bottom width.
In order to conveniently acquire test data, preferably, the bottom of the counterweight disc is fixedly connected with a grating baffle, the top of the mounting seat is fixedly connected with a grating sensor, and the grating sensor is matched with the grating baffle.
For facilitating the simulation test environment, preferably, the base plate terminal surface fixedly connected with guide rail, sliding connection has the environment simulation case on the guide rail, environment simulation case lateral wall fixedly connected with temperature control case, temperature control case's output and environment simulation case inner chamber intercommunication.
In order to improve safety, preferably, the side wall of the substrate is fixedly connected with a protection plate, and the outer wall of the support column is fixedly connected with a protection box.
Compared with the prior art, the invention provides a high-speed impact drop hammer testing machine, which has the following beneficial effects:
1. according to the high-speed impact drop hammer testing machine, through the cooperation among the second screw rod, the compression sliding plate, the compression guide rod, the rebound sleeve rod, the compression block and the accelerating spring, the rebound sleeve rod acquires potential energy for accelerating spring deformation rebound, so that the counterweight disc is applied with higher initial speed at the moment of being released, and larger gravity acting is obtained, the requirements of tests of different materials to be tested are met, and the application range of the device is improved.
2. This high-speed impact drop testing machine, through the cooperation between positioning seat, second cylinder, the stock, connecting rod and the stock of locking, when the drop hammer is accomplished, the stock of locking is close to lifting on one side of counter weight dish to pull up the stock of locking to waiting the distance on test material surface, make the impact bar touch again and wait to touch test material, ensure that the impact bar can not carry out the secondary under the rebound effect and strike, avoided the influence that the rebound impact led to the fact the test result, improved the accuracy of test result.
3. This high-speed impact drop hammer testing machine, through the cooperation between first cylinder, joint collude and the balance weight dish, can very convenient realization to the release and the reset of balance weight dish, be convenient for carry out repeated drop hammer test, effectively improved experimental convenience.
Drawings
FIG. 1 is a schematic diagram of the overall installation structure of a high-speed impact drop hammer testing machine provided by the invention;
FIG. 2 is a schematic diagram of the overall structure of a high-speed impact drop hammer testing machine according to the present invention;
FIG. 3 is a schematic diagram of a locking assembly of a high-speed impact drop testing machine according to the present invention;
FIG. 4 is a schematic view of a loading table of a high-speed impact drop hammer testing machine according to the present invention;
FIG. 5 is a schematic diagram of the internal structure of a protective box of the high-speed impact drop hammer testing machine;
FIG. 6 is a schematic diagram of a first slot-through structure of a high-speed impact drop hammer testing machine according to the present invention;
FIG. 7 is a schematic view of a mounting plate of a high-speed impact drop testing machine according to the present invention;
FIG. 8 is a schematic diagram of an accelerating mechanism of a high-speed impact drop hammer testing machine according to the present invention;
FIG. 9 is a schematic view of a hammering assembly of a high-speed impact drop hammer testing machine according to the present invention;
fig. 10 is a schematic diagram of the internal structure of a compression cylinder of a high-speed impact drop hammer testing machine according to the present invention.
In the figure: 1. a substrate; 2. a mounting base; 21. a support column; 22. a first through slot; 3. a mounting plate; 31. a servo motor; 32. a first screw rod; 33. a first sprocket set; 34. lifting the sliding block; 35. a first guide bar; 4. a hammering assembly; 41. a first cylinder; 42. a clamping hook; 43. a rotating seat; 44. a limit slide bar; 441. a limit sliding seat; 45. a weight plate; 46. an impact bar; 47. a loading table; 471. a horizontal clamp; 472. a second through slot; 5. an acceleration mechanism; 51. a positioning rod; 52. accelerating the top plate; 53. a second screw rod; 54. a compression slide plate; 55. a compression cylinder; 551. a compression block; 552. an accelerating spring; 553. a rebound loop bar; 554. an anti-falling guide rod; 56. a driving motor; 561. a second sprocket set; 6. a capture assembly; 61. a positioning seat; 62. a second cylinder; 63. a capture lever; 64. a connecting rod; 641. a locking seat; 7. a grating baffle; 71. a grating sensor; 8. a guide rail; 81. an environmental simulation box; 82. a temperature control box; 9. a protection plate; 91. and a protective box.
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.
In the description of the present invention, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present invention and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Examples:
referring to fig. 1-10, a high-speed impact drop hammer testing machine, including base plate 1 and fixing the mount pad 2 at its terminal surface, four spinal branch daggers 21 of mount pad 2 top fixedly connected with, support column 21 top fixedly connected with mounting panel 3, mounting panel 3 top fixedly connected with servo motor 31, rotate between mounting panel 3 bottom both sides and the mount pad 2 and be connected with first lead screw 32, the first lead screw 32 top of both sides runs through between the output shaft of mount pad 2 and servo motor 31 through first sprocket group 33 transmission connection, threaded connection has lifting slider 34 between the first lead screw 32 of both sides, the bottom of lifting slider 34 is provided with hammering subassembly 4, still include: the accelerating mechanism 5 is arranged on the lifting sliding block 34 and is used for carrying out acceleration impact on the hammering assembly 4; the locking assembly 6, the locking assembly 6 sets up on the mount pad 2 for prevent hammering subassembly 4 secondary impact influence testing result.
Through the arrangement of the structure, the servo motor 31 is started, and the first screw rods 32 on two sides are driven to rotate through the first chain wheel group 33, so that the lifting sliding block 34 pulls the hammering assembly 4 to move upwards, the falling distance of the hammering assembly 4 can be changed randomly, the size of hammering work is changed, adjustment for test requirements is facilitated, and the convenience of the test is improved; the arrangement of the accelerating mechanism 5 is matched, so that higher initial acceleration can be provided for the hammering component 4 according to the requirement, and the hammering energy is higher, thereby meeting the requirements of tests of different materials to be tested and improving the application range of the device; by means of the arrangement of the locking component 6, the influence of secondary rebound impact on the test result can be effectively achieved, and the accuracy of the test result is improved.
Referring to fig. 2, fig. 4 and fig. 9, wherein the hammering assembly 4 includes a first cylinder 41, the first cylinder 41 is fixedly connected with a side wall of the lifting sliding block 34, the bottom of the lifting sliding block 34 is rotatably connected with a clamping hook 42, a telescopic end of the first cylinder 41 is fixedly connected with a rotating seat 43, the rotating seat 43 is sleeved at the end of the clamping hook 42 and is adapted to rotate with the end, a limit sliding rod 44 is fixedly connected between the bottom of the mounting plate 3 and the mounting seat 2, a counterweight disc 45 is slidably connected between the limit sliding rods 44 on two sides, the clamping hook 42 is fixedly clamped with the top of the counterweight disc 45, the bottom of the counterweight disc 45 is fixedly connected with an impact rod 46, the surface of the substrate 1 is fixedly connected with a carrying table 47, the periphery of the top of the carrying table 47 is fixedly connected with a horizontal clamp 471, the sample to be tested can be fixed by moving the horizontal clamp 471, the stability of the sample to be tested in the hammering process is improved, the sample to be tested can be a plastic piece, a thin steel plate, a metal block and the like, a first through slot 22 is provided in the middle of the mounting seat 2, a second through slot 22 is provided in the middle of the carrying table 47, and the impact rod 46 coincides with the central shaft 46;
through the arrangement of the structure, the material to be tested is placed on the carrying table 47 and covered on the second through groove 472, then the horizontal clamp 471 is pressed, the test object is fixed on the carrying table 47, then the counterweight disc 45 is pulled to a proper height, the first air cylinder 41 stretches out downwards, the clamping hook 42 is pushed to rotate, the clamping hook 42 and the counterweight disc 45 are separated, the impact rod 46 can fall down rapidly under the gravity action of the counterweight disc 45 at the moment, the first through groove 22 is hammered on the surface of the material to be tested, so that the hammering test is completed, after the test is completed, the lifting slider 34 moves downwards until the clamping hook 42 contacts with the top of the fallen counterweight disc 45, then the first air cylinder 41 retracts, the clamping hook 42 is hooked and fixed with the counterweight disc 45 again, the counterweight disc 45 is convenient and fast, the stability is good, and then the counterweight disc 45 and the impact rod 46 can be lifted again so as to perform hammering test again, and the convenience of using the device is improved.
Referring to fig. 5, 8 and 10, the accelerating mechanism 5 includes positioning rods 51, the top of the positioning rods 51 is fixed with the top of the lifting sliding block 34, two positioning rods 51 are symmetrically arranged along the lifting sliding block 34, an accelerating top plate 52 is fixedly connected between the two positioning rods 51, second lead screws 53 are rotatably connected between the two sides of the bottom of the accelerating top plate 52 and the lifting sliding block 34, compression sliding plates 54 are in threaded connection between the second lead screws 53 on two sides, two compression cylinders 55 are fixedly connected to the top of the compression sliding plates 54, the compression cylinders 55 penetrate through the accelerating top plate 52 and are in sliding connection with the accelerating top plate 52, compression blocks 551 are in sliding connection with compression blocks 551, an accelerating spring 552 is connected between the top of each compression block 551 and each compression cylinder 55, rebound sleeve rods 553 are fixedly connected to the middle of each rebound sleeve rod 553, anti-falling guide rods 554 are fixedly connected to the top of each rebound sleeve rod 553, the bottom ends of each rebound sleeve rod 553 penetrate through the lifting sliding block 34, the end face of each accelerating top plate 52 is fixedly connected with a driving motor 56, and the top ends of the second lead screws 53 on two sides penetrate through the accelerating top plate 52 and are in transmission connection with an output shaft of the driving motor 56 through a second chain wheel set 561; the first guide rod 35 is arranged between the bottom of the mounting plate 3 and the mounting seat 2, the first guide rod 35 sequentially penetrates through the accelerating top plate 52, the compression sliding plate 54 and the lifting sliding block 34 and is in sliding connection with the accelerating top plate, the compression sliding plate 54 and the lifting sliding block 34, the sliding tracks of the accelerating top plate 52, the compression sliding plate 54 and the lifting sliding block 34 can be limited through the arrangement of the first guide rod 35, stable sliding of the accelerating top plate 52, the compression sliding plate 54 and the lifting sliding block 34 is ensured, the compression cylinder 55 and the limiting sliding block 44 are in sliding connection through the limiting sliding seat 441, and therefore the compression cylinder 55 can be limited and fixed, and the stability of the compression cylinder 55 in the compression energy gathering process is ensured;
through the arrangement of the structure, the driving motor 56 is started, the driving motor drives the second screw rods 53 on two sides to rotate through the second chain wheel group 561, so that the compression sliding plate 54 pulls the compression cylinder 55 to move downwards, the bottom end of the rebound sleeve rod 553 at the moment is abutted against the top of the counterweight disc 45, and the rebound sleeve rod 553 pushes the compression block 551 to retract into the compression cylinder 55 along with the continuous downward movement of the compression sliding plate 54, so that the accelerating spring 552 is compressed, the rebound sleeve rod 553 acquires potential energy of deformation rebound of the accelerating spring 552, finally, after the counterweight disc 45 is released, the accelerating spring 552 pushes the rebound sleeve rod 553 to be rapidly pressed down, so that higher initial speed is applied to the counterweight disc 45, larger gravity acting is obtained, the test requirements of different materials to be tested are met, and the application range of the device is improved.
Referring to fig. 3 and 6, the locking assembly 6 includes a positioning seat 61, two groups of positioning seats 61 are symmetrically arranged along the center of the first through groove 22, a second cylinder 62 is rotationally connected to the positioning seat 61, a locking rod 63 is rotationally connected to the output end of the second cylinder 62, connecting rods 64 are rotationally connected to two sides of the positioning seat 61, one end of each connecting rod 64, which is far away from the positioning seat 61, is rotationally connected to a locking seat 641, the locking seat 641 is fixedly connected with the positioning seat 61, the locking rod 63 is rotationally connected with the locking seat 641, and the distance between the locking rods 63 at two sides is smaller than the bottom width of the counterweight disc 45, so that the counterweight disc 45 can be ensured to fall right above the locking rod 63;
through the arrangement of the structure, after the balance weight disc 45 drives the impact rod 46 to fall and hammer, the bottom of the balance weight disc 45 just falls above the locking position rod 63, the second cylinder 62 stretches out when the falling and hammering is completed, the locking position rod 63 rotates around the locking position seat 641, one side of the locking position rod 63, which is close to the balance weight disc 45, is lifted, the distance from the locking position rod 63 to the surface of a material to be tested is increased, the balance weight disc 45 rebounded at the moment can fall on the locking position rod 63 to be limited, the impact rod 46 can not touch the material to be tested again, secondary impact of the impact rod 46 under the rebound effect is guaranteed, the influence of rebound impact on the test result is avoided, and the accuracy of the test result is improved.
Referring to fig. 6, a grating baffle 7 is fixedly connected to the bottom of the weight plate 45, a grating sensor 71 is fixedly connected to the top of the mounting seat 2, the grating sensor 71 is matched with the grating baffle 7, two detection points are arranged on the grating sensor 71, after the weight plate 45 falls down, the grating baffle 7 moves into an area monitored by the grating sensor 71, and according to the distance between the two detection points of the grating sensor 71 and the time interval between the two detection points of the grating baffle 7 passing through, the falling speed of the weight plate 45 is calculated, so that hammering work of the weight plate 45 is calculated subsequently.
Referring to fig. 1 and 2, the end face of the substrate 1 is fixedly connected with a guide rail 8, an environment simulation box 81 is slidably connected to the guide rail 8, a temperature control box 82 is fixedly connected to the side wall of the environment simulation box 81, the output end of the temperature control box 82 is communicated with the inner cavity of the environment simulation box 81, the temperature control box 82 adopts the prior art and is used for heating or refrigerating the environment simulation box 81, a ZHQS-225-NC variable temperature testing machine can be selected as a specific model, and the temperature in the environment simulation box 81 can be adjusted to be between-60 degrees and 200 degrees through the temperature control box 82, so that different hammering test temperatures of materials to be tested can be conveniently simulated, and the test effect is improved.
Referring to fig. 1, wherein, base plate 1 lateral wall fixedly connected with guard plate 9, the outer wall fixedly connected with protective housing 91 of support column 21 can effectively splash the material that appears in the hammering process through guard plate 9 and protective housing 91 and shelter from, has improved the security when hammering is experimental.
Referring to fig. 1 to 10, in the present invention, when in use, firstly, a material to be tested is placed on the carrying platform 47 and covered on the second through groove 472, then the horizontal clamp 471 is pressed to fix the test object on the carrying platform 47, then the servo motor 31 is started to drive the first screw rods 32 on two sides to rotate through the first sprocket group 33, so that the lifting slider 34 pulls the weight plate 45 to move upwards, after the weight plate 45 is pulled to a proper height, the first cylinder 41 extends downwards to push the clamping hook 42 to rotate, so that the clamping hook 42 is separated from the weight plate 45, and at the moment, the impact rod 46 is rapidly dropped under the gravity action of the weight plate 45 and is hammered on the surface of the material to be tested through the first through groove 22; meanwhile, after the weight plate 45 falls, the grating baffle 7 moves into the area monitored by the grating sensor 71, and the falling speed of the weight plate 45 is calculated according to the distance between the two detection points of the grating sensor 71 and the time interval between the two detection points of the grating baffle 7 passing through, so that hammering work of the weight plate 45 is calculated later; after the weight plate 45 drives the impact rod 46 to drop and hammer, the bottom of the weight plate 45 just falls above the locking rod 63, and when the drop and hammer is finished, the second cylinder 62 stretches out to enable the locking rod 63 to rotate around the locking seat 641, so that one side of the locking rod 63 close to the weight plate 45 is lifted upwards, the distance from the locking rod 63 to the surface of a material to be tested is increased, the weight plate 45 after rebound at the moment falls on the locking rod 63 to be limited, the impact rod 46 does not touch the material to be tested again, so that the impact rod 46 is prevented from performing secondary impact under the rebound effect, the influence of rebound impact on the test result is avoided, and the accuracy of the test result is improved;
on the other hand, the driving motor 56 is started to drive the second screw rods 53 on two sides to rotate through the second chain wheel set 561, so that the compression sliding plate 54 pulls the compression cylinder 55 to move downwards, the bottom end of the rebound sleeve rod 553 at the moment is abutted against the top of the weight plate 45, and along with the continuous downward movement of the compression sliding plate 54, the rebound sleeve rod 553 pushes the compression block 551 to retract into the compression cylinder 55, so that the accelerating spring 552 is compressed, so that the rebound sleeve rod 553 acquires potential energy of deformation rebound of the accelerating spring 552, finally, after the weight plate 45 is released, the accelerating spring 552 pushes the rebound sleeve rod 553 to press down rapidly, so that higher initial speed is applied to the weight plate 45, and larger gravity work is obtained, so that the requirement of tests of different materials to be tested is met, and the application range of the device is improved;
on the other hand, after the materials to be tested are fixed, the environment simulation box 81 can be pushed to the position right below the first through groove 22 along the guide rail 8, at the moment, the carrying table 47 is just wrapped inside the environment simulation box 81, then the environment simulation box 81 is heated or refrigerated through the temperature control box 82 to simulate different temperature conditions, and then the opening at the top of the environment simulation box 81 is opened, so that the impact rod 46 penetrates into the environment simulation box to complete the drop hammer test, and the drop hammer test can be carried out on the same material at different temperatures, so that the compression resistance of the test materials can be mastered more comprehensively, and the test effect is improved;
the servo motor 31 drives the first screw rod 32 to rotate, so that the lifting sliding block 34 moves downwards until the clamping hook 42 contacts with the top of the weight plate 45 after falling, then the first cylinder 41 retracts, so that the clamping hook 42 is hooked and fixed with the weight plate 45 again, then the weight plate 45 and the impact rod 46 can be lifted again, so that hammering test can be performed again, hammering work of materials to be tested is finally calculated, and single hammering test is completed.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (8)
1. The utility model provides a high-speed impact drop hammer testing machine, includes base plate (1) and fixes mount pad (2) at its terminal surface, a serial communication port, four spinal branch daggers (21) of mount pad (2) top fixedly connected with support column (21), mounting panel (3) top fixedly connected with servo motor (31), rotate between mount pad (2) and the both sides of mounting panel (3) bottom both sides and mount pad (2) and be connected with first lead screw (32), both sides first lead screw (32) top runs through between the output shaft of mount pad (2) and servo motor (31) through first sprocket group (33) transmission connection, both sides threaded connection has lifting slider (34) between first lead screw (32), the bottom of lifting slider (34) is provided with hammering subassembly (4), hammering subassembly (4) are including first cylinder (41), first cylinder (41) and lifting slider (34) lateral wall fixedly connected, the bottom rotation of lifting slider (34) is connected with trip (42), the end of first cylinder (41) is fixedly connected with telescopic link (43) and is cup jointed between mount pad (44) and fixed connection bottom (2), two sides sliding connection has balance weight dish (45) between spacing slide bar (44), joint colludes (42) and balance weight dish (45) top joint is fixed, balance weight dish (45) bottom fixedly connected with impact rod (46), still includes:
the accelerating mechanism (5), accelerating mechanism (5) sets up on lifting slider (34) for accelerate impact to hammering subassembly (4), accelerating mechanism (5) include locating lever (51), locating lever (51) are fixed with lifting slider (34) top, just locating lever (51) are provided with two along lifting slider (34) symmetry between two locating lever (51) fixedly connected with acceleration roof (52), rotate between acceleration roof (52) bottom both sides and lifting slider (34) and be connected with second lead screw (53), both sides threaded connection has compression slide (54) between second lead screw (53), compression slide (54) top fixedly connected with two compression section of thick bamboo (55), compression section of thick bamboo (55) run through acceleration roof (52) and rather than sliding connection, compression section of thick bamboo (55) inner wall sliding connection has compression block (551), be connected with between compression section of thick bamboo (551) top and compression section of thick bamboo (55) accelerating spring (552), compression block (551) middle part fixedly connected with rebound sleeve rod (553) and rebound motor (53), rebound sleeve rod (553) are connected with compression sleeve (553) and rebound end (553) are connected with compression end face (553) fixedly, the top ends of the second lead screws (53) at two sides penetrate through the accelerating top plate (52) and are in transmission connection with an output shaft of the driving motor (56) through a second sprocket set (561);
the locking assembly (6), the setting of locking assembly (6) is on mount pad (2) for prevent hammering subassembly (4) secondary impact influence testing result.
2. The high-speed impact drop hammer testing machine according to claim 1, wherein the surface of the base plate (1) is fixedly connected with a containing table (47), and horizontal clamps (471) are fixedly connected to the periphery of the top of the containing table (47).
3. The high-speed impact drop hammer testing machine according to claim 2, wherein a first through groove (22) is formed in the middle of the mounting seat (2), a second through groove (472) is formed in the middle of the containing table (47), and central axes of the first through groove (22), the second through groove (472) and the impact rod (46) coincide.
4. The high-speed impact drop hammer testing machine according to claim 1, wherein a first guide rod (35) is fixedly connected between the bottom of the mounting plate (3) and the mounting seat (2), the first guide rod (35) sequentially penetrates through the accelerating top plate (52), the compression sliding plate (54) and the lifting sliding plate (34) and is in sliding connection with the accelerating top plate, and the compression cylinder (55) is in sliding connection with the limiting sliding plate (44) through a limiting sliding seat (441).
5. A high-speed impact drop hammer testing machine according to claim 3, wherein the locking assembly (6) comprises a positioning seat (61), the positioning seat (61) is provided with two groups along the central symmetry of the first through groove (22), the positioning seat (61) is rotationally connected with a second cylinder (62), the output end of the second cylinder (62) is rotationally connected with a locking rod (63), both sides of the positioning seat (61) are rotationally connected with connecting rods (64), one end of the connecting rod (64) far away from the positioning seat (61) is rotationally connected with a locking seat (641), the locking seat (641) is fixedly connected with the positioning seat (61), the locking rod (63) is rotationally connected with the locking seat (641), and the distance between the two sides of the locking rod (63) is smaller than the bottom width of the weight plate (45).
6. The high-speed impact drop testing machine according to claim 1, wherein a grating baffle (7) is fixedly connected to the bottom of the counterweight disc (45), a grating sensor (71) is fixedly connected to the top of the mounting seat (2), and the grating sensor (71) is matched with the grating baffle (7).
7. The high-speed impact drop hammer testing machine according to claim 1, wherein the end face of the base plate (1) is fixedly connected with a guide rail (8), an environment simulation box (81) is connected to the guide rail (8) in a sliding mode, a temperature control box (82) is fixedly connected to the side wall of the environment simulation box (81), and the output end of the temperature control box (82) is communicated with the inner cavity of the environment simulation box (81).
8. The high-speed impact drop testing machine according to claim 1, wherein a protection plate (9) is fixedly connected to the side wall of the base plate (1), and a protection box (91) is fixedly connected to the outer wall of the supporting column (21).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202410082341.1A CN117589603B (en) | 2024-01-19 | 2024-01-19 | High-speed impact drop hammer testing machine |
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| CN202410082341.1A CN117589603B (en) | 2024-01-19 | 2024-01-19 | High-speed impact drop hammer testing machine |
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| CN117589603B true CN117589603B (en) | 2024-04-09 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5457984A (en) * | 1994-05-20 | 1995-10-17 | The United States Of Americas As Represented By The Administrator Of National Aeronautics And Space Administration | Internally damped, self-arresting vertical drop-weight impact test apparatus |
| CN206515167U (en) * | 2017-01-06 | 2017-09-22 | 深圳万测试验设备有限公司 | High speed drop hammer impact testing machine |
| CN110146393A (en) * | 2019-06-13 | 2019-08-20 | 福州铁建工程质量检测有限公司 | A kind of landing impact testing machine |
| CN114136757A (en) * | 2021-11-15 | 2022-03-04 | 河南检亿科技有限公司 | Control system for impact test |
-
2024
- 2024-01-19 CN CN202410082341.1A patent/CN117589603B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5457984A (en) * | 1994-05-20 | 1995-10-17 | The United States Of Americas As Represented By The Administrator Of National Aeronautics And Space Administration | Internally damped, self-arresting vertical drop-weight impact test apparatus |
| CN206515167U (en) * | 2017-01-06 | 2017-09-22 | 深圳万测试验设备有限公司 | High speed drop hammer impact testing machine |
| CN110146393A (en) * | 2019-06-13 | 2019-08-20 | 福州铁建工程质量检测有限公司 | A kind of landing impact testing machine |
| CN114136757A (en) * | 2021-11-15 | 2022-03-04 | 河南检亿科技有限公司 | Control system for impact test |
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| CN117589603A (en) | 2024-02-23 |
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