CN216955066U - Drop collision rigidity damping testing device - Google Patents

Abstract

The utility model provides a falling collision stiffness damping test device which comprises a first guide assembly, a second guide assembly, a cross beam, a counterweight falling assembly, a driving assembly, an acceleration sensing unit and a processor, wherein the counterweight falling assembly comprises a first guide sliding seat, a second guide sliding seat and a counterweight falling main body, the first guide sliding seat is movably arranged on the first guide assembly along the vertical direction, the second guide sliding seat is movably arranged on the second guide assembly along the vertical direction, the driving assembly is used for driving the counterweight falling assembly to move to a set height along the vertical direction, the acceleration sensing unit is used for collecting acceleration response of the counterweight falling main body in a collision process, and the processor is used for calculating and acquiring stiffness and damping value of the counterweight falling main body in the collision process according to the collected acceleration response. By applying the technical scheme of the utility model, the technical problem that the angle of a falling piece cannot be controlled and the stability is poor due to the fact that the falling piece is high in mass in the prior art is solved.

Description

Drop collision rigidity damping testing device

Technical Field

The utility model relates to the technical field of drop tests, in particular to a drop impact rigidity damping testing device.

Background

The high-speed aerodyne can lose the suspension force and fall in a free-fall mode under the fault working condition, and rigid collision is caused between a certain device and a ground track. When the material is collided, the two contact surfaces can generate slight angular displacement and linear displacement, so that the surface of the material generates certain elastic and plastic deformation. The elastic deformation is released after energy is stored, so that the contact rigidity between the contact surfaces is shown; plastic deformation consumes energy and manifests itself in damping between the contacting surfaces. The rigidity value and the damping value during collision play an important role in the design of a vehicle body structure, so that a corresponding drop test tool needs to be established. The drop collision rigidity damping test tool is similar to a drop test tool, a piece to be tested is lifted to a specified height and falls freely, the stability of the test piece is kept in the dropping process, and the collision surface is generally a rigid ground or a corresponding impact plate.

Patent CN 102967432 a describes a mobile terminal drop test machine, which includes a base, a support, a bearing mechanism and a motor control system, wherein two guide slots are vertically erected on the support. During the test, the bearing mechanism is along the appointed height of the upward stretching value of guide slot, and the pushing plate is pushed to the tail end of the supporting plate through the control system, so that the falling part falls freely.

The height of falling that above-mentioned patent can be realized is lower, and falls the weight of piece less, can't satisfy damping rigidity test condition. The reason for the above-mentioned problem exists is because adopt two guide slots to realize falling the vertical direction's of piece direction, along with falling the high increase, the moment that the guide slot received increases, leads to the unstability of guide slot also to increase thereupon. In addition, because the falling of the falling test piece is realized by pushing through the pushing plate, when the falling piece has larger mass, the pushing is difficult, and the stability of the falling piece cannot be controlled by the angle when falling is poor.

SUMMERY OF THE UTILITY MODEL

The utility model provides a drop collision stiffness damping testing device which can solve the technical problem that in the prior art, the angle of a drop part cannot be controlled and the stability is poor due to the fact that the drop part is large in mass.

The utility model provides a drop impact rigidity damping test device, which comprises: the first guide assembly and the second guide assembly are arranged in parallel at intervals and are vertical to the ground; the cross beam is respectively connected with the top end of the first guide assembly and the top end of the second guide assembly and is perpendicular to the first guide assembly and the second guide assembly; the counterweight falling assembly comprises a first guide sliding seat, a second guide sliding seat and a counterweight falling main body, wherein the first guide sliding seat is arranged on one side of the counterweight falling main body, the second guide sliding seat is arranged on the other side of the counterweight falling main body, the first guide sliding seat is movably arranged on the first guide assembly along the vertical direction, and the second guide sliding seat is movably arranged on the second guide assembly along the vertical direction; the driving assembly is arranged on the cross beam and used for driving the counterweight falling assembly to move to a set height along the vertical direction; the acceleration sensing unit is arranged on the counterweight falling main body and is used for acquiring the acceleration response of the counterweight falling main body in the collision process; and the processor is used for calculating and acquiring the rigidity and the damping value of the weight falling main body in the collision process according to the acceleration response acquired by the acceleration sensing unit in the collision process.

Further, the main part is fallen to the counter weight includes that the counter weight falls support frame, balancing weight and collision boss, and the counter weight falls the support frame and has the support frame holding tank, and the balancing weight sets up in the support frame holding tank, and the collision boss sets up on the support frame is fallen to the counter weight, and the balancing weight falls the both sides that the support frame was fallen to the counter weight with the collision boss respectively.

Further, the drive assembly is 3:1 laborsaving pulley system, drive assembly include first fixed pulley, second fixed pulley, hoisting pulley and lifting rope, and first fixed pulley and second fixed pulley interval set up on the crossbeam, and the hoisting pulley setting falls the subassembly at the counter weight, and the lifting rope is connected with the hoisting pulley after passing around first fixed pulley, hoisting pulley and second fixed pulley in proper order.

Furthermore, the driving assembly comprises a motor, a rotating shaft, a lifting rope and a buckle, an output shaft of the motor is selectively connected with the rotating shaft through the buckle, one end of the lifting rope is connected with the rotating shaft, and the other end of the lifting rope is connected with the counterweight falling assembly; when the falling collision stiffness damping testing device is in a first state, the buckle is closed, an output shaft of the motor is connected with the rotating shaft, the output shaft of the motor rotates to drive the rotating shaft to rotate, the rotating shaft rotates to wind the lifting rope on the rotating shaft, and the lifting rope drives the counterweight falling assembly to move upwards along the vertical direction; when the falling collision rigidity damping testing device is in the second state, the buckle is opened, the output shaft of the motor is disconnected with the rotating shaft, and under the action of gravity of the counterweight falling assembly, the lifting rope extends and drives the rotating shaft to rotate in the opposite direction.

Further, fall and collide rigidity damping testing arrangement still includes the intermediate support board, and the intermediate support board setting is between first direction subassembly and second direction subassembly and is connected with first direction subassembly and second direction subassembly respectively.

Further, fall and collide rigidity damping testing arrangement still includes the bottom mounting panel, and the equal fixed mounting of first direction subassembly and second direction subassembly is on the bottom mounting panel.

Further, fall and collide rigidity damping testing arrangement still includes first triangle-shaped seat and second triangle-shaped seat, and first direction subassembly passes through first triangle-shaped seat fixed mounting on the bottom mounting panel, and the second direction subassembly passes through second triangle-shaped seat fixed mounting on the bottom mounting panel.

Further, the drop collision stiffness damping test device further comprises a counterweight sandbag, wherein the counterweight sandbag is arranged on the bottom mounting plate and is used for reducing the gravity center of the drop collision stiffness damping test device.

Further, the first guide assembly comprises a first upright post and a first sliding rod, the first upright post is provided with a first upright post accommodating groove, the first sliding rod is arranged in the first upright post accommodating groove, the second guide assembly comprises a second upright post and a second sliding rod, the second upright post is provided with a second upright post accommodating groove, the second sliding rod is arranged in the second upright post accommodating groove, the first guide sliding seat is movably arranged on the first sliding rod, and the second guide sliding seat is movably arranged on the second sliding rod.

Further, all be provided with the scale on first direction subassembly and the second direction subassembly, the scale is used for showing the lifting height that the subassembly was fallen to the counter weight.

By applying the technical scheme provided by the utility model, the device for testing the drop collision stiffness and damping can guide the first guide sliding seat and the second guide sliding seat by arranging the first guide assembly and the second guide assembly, and can ensure that the counterweight drop assembly always moves in the vertical direction in the drop process to keep a vertical drop angle; in addition, the acceleration response of the weight drop main body in the collision process is collected through the acceleration sensing unit, and the processor is used for accurately calculating and acquiring the rigidity and the damping value of the weight drop main body in the collision process according to the acceleration response collected by the acceleration sensing unit in the collision process; moreover, by controlling the weight and contact area of the counterweight drop assembly, a drop of a higher height and greater mass of the drop body can be achieved. Therefore, compared with the prior art, the falling assembly can ensure that the counterweight falling assembly always keeps a vertical falling angle, and the falling stability of the falling assembly is improved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the embodiments of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model. It is obvious that the drawings in the following description are only some embodiments of the utility model, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.

FIG. 1 is a schematic structural diagram of a drop impact stiffness damping test device provided according to an embodiment of the utility model;

FIG. 2 illustrates a rear view of a counterweight-removed drop assembly of the drop crash stiffness damping test apparatus of FIG. 1;

figure 3 illustrates a schematic structural view of a counterweight drop assembly provided in accordance with a particular embodiment of the present invention;

fig. 4 shows a schematic structural diagram of a driving assembly provided according to an embodiment of the present invention.

Wherein the figures include the following reference numerals:

10. a first guide assembly; 11. a first upright post; 11a, a first upright column accommodating groove; 12. a first slide bar; 20. a second guide assembly; 21. a first upright post; 21a, a second upright column accommodating groove; 22. a second slide bar; 30. a cross beam; 40. a counterweight drop assembly; 41. a first guiding sliding seat; 42. a second guide sliding seat; 43. a counterweight drop body; 431. a counterweight drop support frame; 431a, a support frame accommodating groove; 432. a balancing weight; 433. colliding the bosses; 50. a drive assembly; 51. a fixed pulley; 52. a hoisting sheave; 53. lifting a lifting rope; 60. a middle support plate; 70. a bottom mounting plate; 80. a first triangular base; 90. a second triangular base; 100. and (5) weighting the sand bag.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the utility model, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

As shown in fig. 1 and 2, according to an embodiment of the present invention, there is provided a drop crash stiffness damping test device, which includes a first guide assembly 10, a second guide assembly 20, a cross beam 30, a counterweight drop assembly 40, a driving assembly 50, an acceleration sensing unit, and a processor, wherein the first guide assembly 10 and the second guide assembly 20 are arranged in parallel at intervals, the first guide assembly 10 and the second guide assembly 20 are both perpendicular to the ground, the cross beam 30 is connected with a top end of the first guide assembly 10 and a top end of the second guide assembly 20 respectively and is perpendicular to the first guide assembly 10 and the second guide assembly 20, the counterweight drop assembly 40 includes a first guide sliding seat 41, a second guide sliding seat 42, and a counterweight drop body 43, the first guide sliding seat 41 is arranged at one side of the counterweight drop body 43, the second guide sliding seat 42 is arranged at the other side of the counterweight drop body 43, the first guide sliding seat 41 is movably arranged on the first guide assembly 10 in the vertical direction, the second guide sliding seat 42 is movably arranged on the second guide assembly 20 in the vertical direction, the driving assembly 50 is arranged on the cross beam 30, the driving assembly 50 is used for driving the counterweight falling assembly 40 to move to a set height in the vertical direction, the acceleration sensing unit is arranged on the counterweight falling body 43 and used for acquiring the acceleration response of the counterweight falling body 43 in the collision process, and the processor is used for calculating and acquiring the rigidity and the damping value of the counterweight falling body 43 in the collision process according to the acceleration response acquired by the acceleration sensing unit in the collision process.

By applying the configuration mode, the device for testing the drop collision stiffness and damping is provided, the first guide assembly and the second guide assembly are arranged to guide the first guide sliding seat and the second guide sliding seat, and the counterweight drop assembly can be guaranteed to move along the vertical direction all the time in the drop process so as to keep the vertical drop angle; in addition, the acceleration sensing unit is used for acquiring the acceleration response of the falling main body of the counterweight in the collision process, and the processor is used for accurately calculating and acquiring the rigidity and the damping value of the falling main body of the counterweight in the collision process according to the acceleration response acquired by the acceleration sensing unit in the collision process; moreover, by controlling the weight and contact area of the counterweight drop assembly, a drop of a higher height and greater mass of the drop body can be achieved. Therefore, compared with the prior art, the falling assembly can ensure that the counterweight falling assembly always keeps a vertical falling angle, and the falling stability of the falling assembly is improved.

Further, in the present invention, in order to achieve the measurement of the damping and stiffness values of the falling body with different weights and different collision areas, as shown in fig. 3, the counterweight falling body 43 may be configured to include a counterweight falling support frame 431, a counterweight block 432, and a collision boss 433, the counterweight falling support frame 431 has a support frame receiving groove 431a, the counterweight block 432 is disposed in the support frame receiving groove 431a, the collision boss 433 is disposed on the counterweight falling support frame 431, and the counterweight block 432 and the collision boss 433 are respectively located at two sides of the counterweight falling support frame 431.

Under this kind of configuration, the balancing weight sets up in the support frame holding tank, at the in-process of in-service use, can adjust the weight of balancing weight and the area of collision boss according to the weight and the collision area that specifically await measuring falls the piece to can realize the measurement to the rigidity and the damping of the main part that falls of different weight, different collision areas. In addition, in the present invention, in order to ensure the stability of the counterweight block during the falling process, the counterweight block 432 and the collision boss 433 may be fixedly mounted on the counterweight falling support frame 431 by means of a stud.

Further, in the present invention, as shown in fig. 4, in order to achieve the movement of the counterweight dropping assembly in the vertical direction, the driving assembly 50 may be configured to be 3:1 laborsaving pulley system, drive assembly 50 includes first fixed pulley 51, second fixed pulley 52, hoisting pulley 53 and lifting rope 54, and first fixed pulley 51 and second fixed pulley 52 interval set up on crossbeam 30, and hoisting pulley 53 sets up on counter weight falls subassembly 40, and hoisting rope 53 is connected with hoisting pulley 53 after walking around first fixed pulley 51, hoisting pulley 53 and second fixed pulley 52 in proper order.

As an embodiment of the present invention, as shown in fig. 1, a lifting rope avoiding hole is formed in the first guide assembly 10, and the lifting rope 54 passes through the lifting rope avoiding hole and then sequentially passes through the first fixed pulley 51, the lifting pulley 53 and the second fixed pulley 52 and then is connected to the hook of the lifting pulley 53, so that the force required for lifting the falling assembly of the counterweight can be saved to the maximum extent, and the problem of difficulty in pushing due to pushing the falling test piece by the pushing plate in the prior art can be effectively solved.

As another embodiment of the present invention, not shown, in order to improve the lifting efficiency of the counterweight dropping assembly and save manpower, the driving assembly 50 may be configured to include a motor, a rotating shaft, a lifting rope, and a buckle, an output shaft of the motor may be selectively connected to the rotating shaft through the buckle, one end of the lifting rope is connected to the rotating shaft, and the other end of the lifting rope is connected to the counterweight dropping assembly 40; when the falling collision stiffness damping testing device is in a first state, namely when the counterweight falling assembly needs to be lifted upwards along the vertical direction, the buckle is closed, the output shaft of the motor is connected with the rotating shaft, the output shaft of the motor rotates to drive the rotating shaft to rotate, the rotating shaft rotates to wind the lifting rope on the rotating shaft, and the lifting rope drives the counterweight falling assembly 40 to move upwards along the vertical direction; when falling collision rigidity damping testing arrangement and being in the second state, when needing promptly that the counter weight falls the subassembly and fall the free fall, the buckle is opened, and the output shaft and the axis of rotation disconnection of motor play lifting rope extension and drive the axis of rotation and rotate in the opposite direction under the action of gravity that subassembly 40 was fallen to the counter weight.

Further, in the present invention, in order to improve the torsional rigidity of the drop impact rigidity damping test apparatus, the drop impact rigidity damping test apparatus may be configured to further include an intermediate support plate 60, the intermediate support plate 60 being disposed between the first guide assembly 10 and the second guide assembly 20 and connected to the first guide assembly 10 and the second guide assembly 20, respectively. In addition, in order to further improve the stability that the counterweight falls the main part and keeps falling perpendicularly, also can fall collision rigidity damping testing arrangement and set up to still including third direction subassembly and third direction sliding seat, the third direction sliding seat cooperatees with the third direction subassembly. As other embodiments of the utility model, the drop impact stiffness damping test device can also be arranged to further comprise a fourth guide assembly and a fourth guide sliding seat, and the fourth guide sliding seat is matched with the fourth guide assembly. In the practical application process, the number of the guiding components can be selected according to the practical requirement, and is not limited here.

Further, in the present invention, in order to improve the compactness of the structure, the drop impact stiffness damping test device may be configured to further include a bottom mounting plate 70, and both the first guide assembly 10 and the second guide assembly 20 are fixedly mounted on the bottom mounting plate 70. As an embodiment of the present invention, the first guide assembly 10 and the second guide assembly 20 may be fixedly mounted on the bottom mounting plate 70 by welding.

Further, in the present invention, in order to improve structural stability, the drop impact stiffness damping test apparatus may be configured to further include a first triangular seat 80 and a second triangular seat 90, the first guide assembly 10 is fixedly mounted on the bottom mounting plate 70 through the first triangular seat 80, and the second guide assembly 20 is fixedly mounted on the bottom mounting plate 70 through the second triangular seat 90.

In addition, in the present invention, in order to ensure the structural stability of the whole device, the drop impact stiffness damping test device may be configured to further include a counterweight sandbag 100, the counterweight sandbag 100 being disposed on the bottom mounting plate 70, the counterweight sandbag 100 being used to lower the center of gravity of the drop impact stiffness damping test device. As shown in fig. 1, a plurality of counterweight sandbags 100 are placed on the bottom mounting plate 70, and the gravity center of the drop collision stiffness damping test device can be lowered through the counterweight sandbags 100, so that the overall stability of the device is improved.

Further, in the present invention, in order to simplify the manufacturing process, the first guide assembly 10 may be configured to include a first pillar 11 and a first slide bar 12, the first pillar 11 having a first pillar receiving groove 11a, the first slide bar 12 being disposed in the first pillar receiving groove 11a, the second guide assembly 20 including a second pillar 21 and a second slide bar 22, the second pillar 21 having a second pillar receiving groove 21a, the second slide bar 22 being disposed in the second pillar receiving groove 21a, the first guide slide base 41 being movably disposed on the first slide bar 12, and the second guide slide base 42 being movably disposed on the second slide bar 22.

As a specific embodiment of the utility model, the first sliding rod and the second sliding rod are both stainless steel sliding rods with smooth surfaces, and the sliding rods reduce the friction between the falling process and the sliding seat of the falling piece to the maximum extent and ensure the stability in the falling process.

Further, in the present invention, scales are provided on both the first guide assembly 10 and the second guide assembly 20, and the scales are used for displaying the lifting height of the counterweight dropping assembly 40.

As one embodiment of the present invention, as shown in fig. 1 to 4, there is provided a drop crash stiffness damping test device for high drop height and large drop mass, which includes a load bearing guide frame, a counterweight drop assembly, a drive assembly 50, an acceleration sensing unit and a processor. The whole testing device adopts a bolt connection mode, so that the testing device is convenient to disassemble, assemble and move. The bearing guide frame mainly plays a role in hoisting and falling, and comprises: first stand 11, first slide bar 12, second stand 21, second slide bar 22, second direction subassembly 20, crossbeam 30, first triangle-shaped seat 80, second triangle-shaped seat 90, bottom mounting panel 70 and counter weight sand bag 100, drive assembly 50 includes first fixed pulley 51, second fixed pulley 52, hoisting pulley 53 and lifting rope 54, U type first stand 11 is vertically installed on bottom mounting panel 70 through first triangle-shaped seat 80, U type second stand 21 is vertically installed on bottom mounting panel 70 through second triangle-shaped seat 90, be equipped with first fixed pulley 51 and second fixed pulley 52 on the top crossbeam 39, install first slide bar 12 in the middle of U type first stand 11, install second slide bar 22 in the middle of U type second stand 21. The bottom mounting plate 70 is provided with a weighted sandbag 100 to lower the center of gravity of the overall structure and thereby improve the stability of the pull-up. The driving assembly adopts a 3:1 labor-saving pulley block device, so that the test piece is convenient to pull up. In addition, two stainless steel slide bars with smooth surfaces reduce the friction between the falling process and the falling piece sliding seat to the maximum extent, and ensure the stability of the falling process.

The subassembly is fallen to the counter weight includes first direction sliding seat 41, second direction sliding seat 42 and counter weight fall main part 43, the counter weight falls main part 43 and falls the support frame 431 including the counter weight, balancing weight 432 and collision boss 433, U type counter weight falls the support frame 431 and is the major structure who falls the test piece, balancing weight 432 are equipped with to the inboard, can be according to the required quality control balancing weight 432's of test quantity, the outside be equipped with slide bar complex ear type direction sliding seat, collision boss 433 is equipped with to the downside, cylindrical boss lower surface is the contact surface that falls the piece.

An acceleration sensor is installed at the center of the upper surface of the weight block 432, and the acceleration sensor is used for collecting the acceleration response of the weight drop main body 43 in the collision process. The processor is internally stored with a simulation result, the simulation result is an ideal acceleration, an ideal rigidity and a damping value obtained in the falling collision process of the falling test piece with ideal weight, the processor calibrates the ideal acceleration according to a first peak of a real acceleration response curve after receiving a real acceleration response obtained in the actual test process, and calibrates the ideal rigidity and the damping value according to the calibrated ideal acceleration so as to obtain the falling collision rigidity damping value. The drop impact stiffness damping test device provided by the utility model performs impact stiffness damping test by controlling the weight and the contact area of a drop part, the tool realizes drop of the drop part with higher height and larger mass, the drop process always keeps a vertical drop angle, and the impact stiffness damping test under experimental conditions is realized by adjusting the number of the counterweight blocks and the contact area of the bosses.

For further understanding of the present invention, the drop impact stiffness damping test device provided by the present invention is described in detail below with reference to fig. 1 to 4.

As shown in fig. 1 to 4, according to an embodiment of the present invention, there is provided a drop impact stiffness damping test apparatus, the drop impact stiffness damping test apparatus includes a first guide assembly 10, a second guide assembly 20, a cross beam 30, a counterweight drop assembly 40, a driving assembly 50, an acceleration sensing unit and a processor, an intermediate support plate 60, a bottom mounting plate 70, a first triangular seat 80, a second triangular seat 90 and a counterweight sandbag 100, the counterweight drop assembly 40 includes a first guide sliding seat 41, a second guide sliding seat 42 and a counterweight drop body 43, the first guide assembly 10 includes a first upright post 11 and a first slide rod 12, the second guide assembly 20 includes a second upright post 21 and a second slide rod 22, the counterweight drop body 43 includes a counterweight drop support frame 431, a counterweight block 432 and a collision boss 433, the driving assembly 50 includes a first fixed pulley 51, a second fixed pulley 431, a counterweight drop support frame 431, a counterweight block 432 and a collision boss 433, A second crown block 52, a hoisting block 53 and a hoisting rope 54.

The first slide bar 12 is installed in the first upright post 11, the second slide bar 22 is installed in the second upright post 21, the verticality of the first slide bar 12 and the second slide bar 22 can be adjusted by changing the number of the gaskets, the first slide bar 12 and the second slide bar 22 are connected with the top cross beam 30 through bolts, and the first upright post 11 and the second upright post 21 are respectively connected with the middle support plate 60 to improve the torsional rigidity of the frame. The installed frame is connected to the bottom mounting plate 70 through the first triangular seat 80 and the second triangular seat 90, and the counterweight sandbag 100 is placed on the bottom mounting plate 70 to improve the overall stability.

Install the first direction sliding seat 41 of ear type at one side that the support frame 431 falls in U type counter weight through the bolt, install the opposite side that the support frame 431 falls in U type counter weight with ear type second direction sliding seat 42 through the bolt, place inside U type counter weight falls the support frame 431 with a certain amount of balancing weight 432, connect balancing weight 432 and collision boss 433 through stud. Connecting the hoisting pulley 53 to a lifting eye screw on the U-shaped counterweight falling support frame 431, and finally forming the hoisting pulley 53 and the fixed pulley into a shape of 3 through a hoisting rope 54: 1 labor-saving pulley block system. The acceleration sensor is installed at the center of the upper surface of the weight block 432.

The lifting rope 54 is pulled to enable the counterweight falling main body 43 to be lifted to a specified height, after the counterweight falling main body 43 is stable, the lifting rope is loosened, the counterweight falling main body 43 falls freely along the sliding rod, and the acceleration sensor records the acceleration response in the collision process. The processor is used for calibrating the ideal acceleration according to a first peak of a corresponding curve of the real acceleration after receiving a real acceleration response obtained in an actual test process, and calibrating the ideal rigidity and the damping value according to the calibrated ideal acceleration so as to obtain the damping value of the falling collision rigidity.

In conclusion, the utility model provides a drop collision stiffness damping test device, which guides a first guide sliding seat and a second guide sliding seat by arranging a first guide assembly and a second guide assembly, and can ensure that a counterweight drop assembly always moves along the vertical direction in the drop process to keep the vertical drop angle; in addition, the acceleration response of the weight drop main body in the collision process is collected through the acceleration sensing unit, and the processor is used for accurately calculating and acquiring the rigidity and the damping value of the weight drop main body in the collision process according to the acceleration response collected by the acceleration sensing unit in the collision process; moreover, by controlling the weight and contact area of the counterweight drop assembly, a drop of a higher height and greater mass of the drop body can be achieved. Therefore, compared with the prior art, the falling assembly can ensure that the counterweight falling assembly always keeps a vertical falling angle, and the falling stability of the falling assembly is improved.

In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and in the case of not making a reverse description, these orientation words do not indicate and imply that the device or element being referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be considered as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

Spatially relative terms, such as "above … …", "above … …", "above … …", "above", and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of the present invention should not be construed as being limited.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. The utility model provides a fall collision rigidity damping testing arrangement which characterized in that falls collision rigidity damping testing arrangement and includes:

the device comprises a first guide assembly (10) and a second guide assembly (20), wherein the first guide assembly (10) and the second guide assembly (20) are arranged in parallel at intervals, and the first guide assembly (10) and the second guide assembly (20) are both vertical to the ground;

a cross beam (30), wherein the cross beam (30) is respectively connected with the top end of the first guide assembly (10) and the top end of the second guide assembly (20) and is perpendicular to the first guide assembly (10) and the second guide assembly (20);

the counterweight falling assembly (40) comprises a first guide sliding seat (41), a second guide sliding seat (42) and a counterweight falling body (43), wherein the first guide sliding seat (41) is arranged on one side of the counterweight falling body (43), the second guide sliding seat (42) is arranged on the other side of the counterweight falling body (43), the first guide sliding seat (41) is movably arranged on the first guide assembly (10) along the vertical direction, and the second guide sliding seat (42) is movably arranged on the second guide assembly (20) along the vertical direction;

a drive assembly (50), wherein the drive assembly (50) is arranged on the cross beam (30), and the drive assembly (50) is used for driving the counterweight falling assembly (40) to move to a set height along the vertical direction;

the acceleration sensing unit is arranged on the counterweight falling main body (43) and is used for collecting the acceleration response of the counterweight falling main body (43) in the collision process;

and the processor is used for calculating and acquiring the rigidity and damping value of the counterweight falling main body (43) in the collision process according to the acceleration response acquired by the acceleration sensing unit in the collision process.

2. The drop collision stiffness damping test device according to claim 1, wherein the weight drop body (43) comprises a weight drop support frame (431), a weight block (432) and a collision boss (433), the weight drop support frame (431) has a support frame accommodating groove (431a), the weight block (432) is disposed in the support frame accommodating groove (431a), the collision boss (433) is disposed on the weight drop support frame (431), and the weight block (432) and the collision boss (433) are respectively located at two sides of the weight drop support frame (431).

3. The drop impact stiffness damping test device of claim 1, wherein the drive assembly (50) is 3:1 laborsaving pulley system, drive assembly (50) include first fixed pulley (51), second fixed pulley (52), hoisting pulley (53) and lifting rope (54), first fixed pulley (51) with second fixed pulley (52) interval sets up on crossbeam (30), hoisting pulley (53) set up on assembly (40) is fallen to the counter weight, lifting rope (54) are walked around in proper order first fixed pulley (51) hoisting pulley (53) and second fixed pulley (52) after with hoisting pulley (53) are connected.

4. The drop impact stiffness damping test device according to claim 1, wherein the drive assembly (50) comprises a motor, a rotating shaft, a lifting rope and a buckle, an output shaft of the motor is selectively connected with the rotating shaft through the buckle, one end of the lifting rope is connected with the rotating shaft, and the other end of the lifting rope is connected with the counterweight drop assembly (40); when the falling collision stiffness damping testing device is in a first state, the buckle is closed, an output shaft of the motor is connected with the rotating shaft, the output shaft of the motor rotates to drive the rotating shaft to rotate, the rotating shaft rotates to wind the lifting rope on the rotating shaft, and the lifting rope drives the counterweight falling assembly (40) to move upwards along the vertical direction; when falling collision rigidity damping testing arrangement and being in the second state, the buckle is opened, the output shaft of motor with the axis of rotation disconnection the counter weight falls under the action of gravity of subassembly (40), the lifting rope extension drives the axis of rotation antiport.

5. The drop crash stiffness damping test device according to claim 4, further comprising an intermediate support plate (60), the intermediate support plate (60) being disposed between the first guide assembly (10) and the second guide assembly (20) and being connected with the first guide assembly (10) and the second guide assembly (20), respectively.

6. The drop crash stiffness damping test device according to claim 5, further comprising a bottom mounting plate (70), the first guide assembly (10) and the second guide assembly (20) each being fixedly mounted on the bottom mounting plate (70).

7. The drop crash stiffness damping test device according to claim 6, further comprising a first triangular seat (80) and a second triangular seat (90), the first guide assembly (10) being fixedly mounted on the bottom mounting plate (70) through the first triangular seat (80), and the second guide assembly (20) being fixedly mounted on the bottom mounting plate (70) through the second triangular seat (90).

8. The drop crash stiffness damping test device according to claim 7, further comprising a weighted sandbag (100), the weighted sandbag (100) being disposed on the bottom mounting plate (70), the weighted sandbag (100) being configured to lower a center of gravity of the drop crash stiffness damping test device.

9. The drop impact stiffness damping test device according to claim 8, wherein the first guide assembly (10) comprises a first upright (11) and a first slide bar (12), the first upright (11) having a first upright receiving groove (11a), the first slide bar (12) being disposed within the first upright receiving groove (11a), the second guide assembly (20) comprises a second upright (21) and a second slide bar (22), the second upright (21) having a second upright receiving groove (21a), the second slide bar (22) being disposed within the second upright receiving groove (21a), the first guide slide block (41) being movably disposed on the first slide bar (12), the second guide slide block (42) being movably disposed on the second slide bar (22).

10. The drop impact stiffness damping test device according to claim 9, wherein scales are arranged on the first guide assembly (10) and the second guide assembly (20) and used for displaying the lifting height of the counterweight drop assembly (40).

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