CN116577122B - Inflatable false target abrasion resistance performance simulation test device - Google Patents
Inflatable false target abrasion resistance performance simulation test device Download PDFInfo
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- CN116577122B CN116577122B CN202310859286.8A CN202310859286A CN116577122B CN 116577122 B CN116577122 B CN 116577122B CN 202310859286 A CN202310859286 A CN 202310859286A CN 116577122 B CN116577122 B CN 116577122B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
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Abstract
The application relates to the technical field of military decoys, in particular to an inflatable decoy abrasion resistance performance simulation test device which comprises a test bed, a driving mechanism and a simulation mechanism, wherein a filling groove is formed in the test bed, fixing frames are arranged on two sides of the top wall of the test bed, a PLC (programmable logic controller) is further arranged on one side of the filling groove, the driving mechanism comprises a linkage shaft, a rotating assembly and a rotating member, the linkage shaft penetrates through the two fixing frames, the rotating assemblies are arranged at the positions, close to the end parts, of the two sides of the linkage shaft, so that the linkage shaft can synchronously rotate on the two sides, disc-shaped rotating members are arranged at the two ends of the linkage shaft, connecting rods are arranged on the rotating members, and the simulation mechanism comprises a rolling friction test assembly and a sliding friction test assembly. Compared with the prior art, the application can effectively simulate the abrasion resistance test of the inflatable false target and can also improve the test efficiency.
Description
Technical Field
The application relates to the technical field of military decoys, in particular to an inflatable decoy abrasion resistance performance simulation test device.
Background
The inflatable false target is designed and manufactured according to the proportion size of 1:1 of real equipment, takes textile as a surface material, adopts a segmented air chamber structure, is matched with a functional accessory, has lifelike appearance, and has the functions of optical simulation, thermal infrared radiation simulation, radar reflection performance simulation and the like. The method is mainly suitable for simulating targets, arranging in an array and performing actual combat exercise, can effectively disperse the attention of enemies, confuse high-altitude investigation, induce enemies to attack to shield true targets, and disperse enemies' firepower to reduce the loss of the true targets.
As the use environment of false targets is mostly in field areas, the places where the false targets pass are mainly sandstones and soil. The inflatable false target comprises an inflatable missile vehicle, an inflatable tank, an inflatable airplane, an inflatable target, an inflatable garage, an inflatable tent, an inflatable gun, an inflatable large transport vehicle and the like, wherein the inflatable missile vehicle and the inflatable large transport vehicle are taken as examples, and the contact between the inflatable missile vehicle and the ground is mainly the contact of tires, so that the friction resistance research of the inflatable false target can directly take tire components as test objects to carry out related tests, and in addition, the test of the friction resistance needs to be carried out respectively for sliding friction and rolling friction so as to better simulate the test effect of the tires on real equipment.
The Chinese patent publication No. CN114279723A discloses a performance testing device for a new energy automobile tire, which effectively improves the accuracy of the tire body test by performing multiple real simulation tests under the testing environments of the ground with different concave-convex degrees, but on the basis of the application, the performance testing device also has the following defects:
1. firstly, the test object of the test device is a real tire, while the test object of the test device is an inflatable tire, and for the inflatable tire, when wrinkling or insufficient internal air pressure exists, poor contact with the ground is easily formed, namely, the inflatable tire can not be ensured to be always contacted with the ground in the test process, and the accuracy of the test can be influenced.
2. Secondly, the technical problem to be solved by the testing device is that the performance of the tire on the ground with different concave-convex degrees is tested by setting an experiment group and a control group, but the test conditions of the two groups are the same, and the two friction processes to be tested and simulated in the application are different, so that the technical teaching of the patent cannot realize the technical support required by the application.
Therefore, it is necessary to provide an inflatable decoy abrasion resistance simulation test apparatus capable of achieving the effect of effectively simulating the abrasion resistance test of the inflatable decoy.
Disclosure of Invention
The application aims to provide an inflatable false target abrasion resistance simulation test device, which aims to solve the problems in the background technology.
In order to solve the technical problems, the application provides the following technical scheme: the inflatable false target abrasion resistance performance simulation test device comprises a test bed, a driving mechanism and a simulation mechanism, wherein a filling groove is formed in the test bed, fixing frames are arranged on two sides of the top wall of the test bed, and a PLC (programmable logic controller) is further arranged on one side of the filling groove;
the driving mechanism comprises a linkage shaft, rotating assemblies and rotating pieces, wherein the linkage shaft penetrates through the two fixing frames, the rotating assemblies are arranged at the positions, close to the end parts, of the two sides of the linkage shaft, so that the linkage shaft can synchronously rotate at the two sides, disc-shaped rotating pieces are arranged at the two ends of the linkage shaft, and connecting rods are arranged on the rotating pieces;
the simulation mechanism comprises a rolling friction test assembly and a sliding friction test assembly, the rolling friction test assembly comprises a first fixing mechanism, an adjusting plate and an adjusting mechanism, and the sliding friction test assembly comprises a second fixing mechanism, a clamping mechanism and a sliding adjusting mechanism;
the first fixing mechanism and the second fixing mechanism comprise a fixing disc, an adjusting disc and a supporting component, the adjusting disc moves on one side of the fixing disc, the supporting component is provided with three groups and moves linearly along one side surface of the adjusting disc, a plurality of tooth grooves are uniformly formed in the circumferential surface of the fixing disc, and a plurality of convex teeth which are matched with the tooth grooves and are uniformly arranged in a straight line are further arranged on the test bench;
the fixing frames on two sides are provided with cross bars between the side walls, one of the cross bars is fixedly provided with two symmetrical fixing seats, one side of one fixing seat is connected with one end of the adjusting plate through shaft connection, one side of the other fixing seat is connected with one end of the adjusting mechanism through shaft connection, one side of the bottom wall of the adjusting plate is also provided with a sliding piece in a sliding mode, and the other end of the adjusting mechanism is movably connected with the sliding piece;
two symmetrically distributed sliding adjusting mechanisms are arranged on the other cross rod in a sliding manner, a side seat is arranged on one side of each sliding adjusting mechanism, and each clamping mechanism elastically moves on one side of the side seat;
the first fixing mechanism and one side of the second fixing mechanism are respectively provided with a connecting mechanism, each connecting mechanism comprises a rotating piece and a limiting piece, each limiting piece is arranged along the length direction of the corresponding transverse rod in a sliding mode, and the connecting rod penetrates through the corresponding rotating piece.
In one embodiment, the upper surface both sides of test bench all are fixed with the fixed plate through L type piece and bolt, two all be provided with on the fixing base with it even protruding one as an organic whole, both sides protruding one side is provided with pivot one and pivot two through the hub connection rotation respectively, pivot one runs through the one end of regulating plate and is connected as an organic wholely with it, pivot two runs through regulating mechanism's one end and is connected as an organic wholely with it, and pivot one with the other end of pivot two rotates respectively and sets up on the fixed plate of both sides.
In one embodiment, the rotating assembly comprises a gear and a rack which are meshed with each other, a first guide block is welded on the rack, the first guide block slides between the inner walls of the fixing frame, a second screw rod in threaded connection with the first guide block is penetrated in the rack, and the gear is fixedly arranged on the linkage shaft, so that the gear and the rack form a whole.
In one embodiment, the cross rod is provided with a through hole arranged along the length direction of the cross rod, the connecting mechanism further comprises a first connecting shaft, the first fixing mechanism, the second fixing mechanism and one end of the first connecting shaft are rotationally connected, the other end of the first connecting shaft and the rotating piece are rotationally connected through a shaft, the first connecting shaft is movable between the inner walls of the through hole, and the first connecting shaft penetrates through the limiting piece and is fixedly bonded with the limiting piece;
when the connecting shaft I is in contact with any end wall of the through hole, the connecting rod still penetrates through the rotating piece.
In one embodiment, a bottom groove is formed in the bottom wall of the adjusting plate, a sliding rod arranged along the length direction of the bottom groove is further installed in the bottom groove, the sliding piece comprises a sliding block and a second protrusion which are welded into a whole, the sliding block is arranged between the inner walls of the bottom groove in a sliding mode, and the sliding block further slides on the sliding rod.
In one embodiment, the adjusting mechanism comprises an adjusting handle, a piston shaft and a connecting piece of a U-shaped structure, a cavity is formed in the adjusting handle, a sliding bolt is arranged between the inner walls of the cavity in a sliding mode, one end of the piston shaft is located in the cavity, the sliding bolt penetrates through the end of the piston shaft, a tension spring is further connected between the piston shaft and the inner walls of the cavity, and accordingly the piston shaft always has a pulling force towards the direction of the adjusting handle to the connecting piece, so that the adjusting plate can be always pressed above a tire, and the connecting piece is connected with the second protrusion through a shaft.
In one embodiment, the clamping mechanism comprises a clamping plate, a connecting plate and a second connecting shaft, the connecting plate is fixedly connected with the clamping plate, one end of the second connecting shaft is screwed in the connecting plate through threads, an integral limit bump is arranged at the other end of the second connecting shaft, the second connecting shaft penetrates through the side seat, a sliding sheet is adhered to the outer wall of the second connecting shaft, a cavity is formed in the side seat, and the sliding sheet elastically slides between the inner walls of the cavity.
In one embodiment, the sliding adjusting mechanism comprises an adjusting seat, wherein one cross rod penetrates through the adjusting seat and is arranged in a sliding manner with the adjusting seat, a first screw rod in threaded connection with the adjusting seat is further penetrated in the adjusting seat, the first screw rod is arranged below the cross rod and is rotatably arranged between the side walls of the fixing frame, the first screw rod comprises two sub screw rods which are equal in length and are arranged in the same direction in threads, and the two sub screw rods are fixedly connected through a coupling.
In one embodiment, the support assembly comprises a support member, the support member is in an arc-shaped structure, a second guide block is welded on the bottom wall of the support member, a plurality of grooves are formed in the side wall surface of the adjusting disc, the second guide block slides between the inner walls of the grooves, and a third screw rod penetrating through the second guide block and in threaded transmission with the second guide block is further installed in the grooves.
In one embodiment, when the driving mechanism reciprocally rotates, the first fixing mechanism makes linear rolling motion along the convex teeth, the second fixing mechanism makes linear sliding motion, and the first fixing mechanism and the second fixing mechanism move in the same direction and synchronously.
Compared with the prior art, the application has the following beneficial effects:
1. according to the application, the driving mechanism, the connecting rod, the connecting mechanism, the first fixing mechanism, the adjusting plate, the adjusting mechanism and the like are arranged, and the driving mechanism is used for driving to carry out reciprocating rotation adjustment, so that the connecting mechanism and the first fixing mechanism are synchronously driven by the connecting rod to move, one false target part (tire) to be tested is fixed on one side of the first fixing mechanism, the adjusting plate is always pressed above the tire through the acting force of a tension spring of the adjusting mechanism, and the meshing rolling action between the first fixing mechanism and the convex teeth is matched, so that the contact effect between the tire and a testing medium (namely a contact surface) in the reciprocating rolling process is ensured, and the abrasion resistance of an inflatable false target under the rolling friction test can be tested more accurately.
2. According to the application, the clamping mechanism, the sliding adjusting mechanism, the fixing mechanism and the like are arranged, and likewise, the driving mechanism is used for driving to carry out reciprocating rotation adjustment, so that the connecting mechanism and the fixing mechanism I are synchronously driven to move by the connecting rod, one false target part (tire) to be tested is fixed on one side of the fixing mechanism II, and the self-adjusting tightness of the clamping mechanisms on two sides of the tire is utilized, so that the contact between the tire and a testing medium (namely a contact surface) is always kept in a good state in the reciprocating sliding process of the tire, and the abrasion resistance of the inflatable false target under the sliding friction test can be more accurately tested.
3. In the rolling friction test and the sliding friction test, the application ensures good contact effect between the inflatable tire and the test medium (namely the contact surface) by respectively using the pressing effect of the adjusting plate on the tire and the clamping effect of the clamping mechanism on the tire, thereby avoiding the problem that the contact defect of the tire influences the test result due to the wrinkling of the tire or insufficient internal air pressure in the test process.
4. The application uses a single driving mechanism as an output part and uses the connecting rods with two sides connected with the driving mechanism as a transmission part, so that the rolling friction test and the sliding friction test can be simultaneously and synchronously carried out.
Drawings
The technical solution and other advantageous effects of the present application will be made apparent by the following detailed description of the specific embodiments of the present application with reference to the accompanying drawings.
In the drawings:
FIG. 1 is a schematic view of the overall structure of the present application;
FIG. 2 is a schematic view of the overall structure of the rear side of FIG. 1;
FIG. 3 is a schematic diagram of the front view of FIG. 2;
FIG. 4 is a schematic view of the securing mechanism of the present application;
FIG. 5 is a schematic view of the connection mechanism of the present application;
FIG. 6 is a schematic view of the three-dimensional connection between the adjustment lever and the adjustment lever of the present application;
FIG. 7 is a schematic view of the planar connection between the adjustment handle and the adjustment handle of the present application;
fig. 8 is a schematic view of the clamping plate connection and its adjustment according to the present application.
In the figure: 1. a test bed; 11. filling the groove; 12. a fixing plate; 13. a PLC controller; 14. convex teeth; 2. a fixing frame; 21. a rack; 211. a guide block I; 22. a linkage shaft; 221. a gear; 23. a rotating member; 231. a connecting rod; 24. a cross bar; 25. a fixing seat; 26. an adjusting seat; 261. a side seat; 27. a first screw; 3. a first fixing mechanism; 31. a fixed plate; 311. tooth slots; 32. an adjusting plate; 321. a first sensor; 4. a connecting mechanism; 41. a rotating member; 42. a first connecting shaft; 43. a limiting piece; 5. an adjusting plate; 51. a slide block; 52. a slide bar; 6. a clamping plate; 61. a connecting plate; 62. a second connecting shaft; 621. a sliding sheet; 622. a limit bump; 7. an adjusting handle; 71. a piston shaft; 711. a connecting piece; 712. a slide bolt; 72. a chute; 8. a support; 81. a second guide block; 9. and a second fixing mechanism.
Detailed Description
The following disclosure provides many different embodiments, or examples, for implementing different features of the application. In order to simplify the present disclosure, components and arrangements of specific examples are described below. They are, of course, merely examples and are not intended to limit the application. Furthermore, the present application may repeat reference numerals and/or letters in the various examples, which are for the purpose of brevity and clarity, and which do not themselves indicate the relationship between the various embodiments and/or arrangements discussed. In addition, the present application provides examples of various specific processes and materials, but one of ordinary skill in the art will recognize the application of other processes and/or the use of other materials.
Referring to fig. 1-8, the present application provides the following technical solutions: the utility model provides an inflatable decoy antifriction performance analogue test device, includes test bench 1, actuating mechanism and analog mechanism, has seted up filling tank 11 on the test bench 1, because the environment that decoy used is in the field mostly, consequently can pack sand or other to wherein to simulate out different ground environment, and both sides on its roof all install mount 2 through the bolt, still install PLC controller 13 through the screw on the roof of test bench 1 in one side of filling tank 11.
As a main driving part for driving two experiments, the driving mechanism comprises a linkage shaft 22, a rotating assembly and a rotating piece 23, wherein the linkage shaft 22 penetrates through and is rotatably arranged with the two fixing frames 2, and the rotating assemblies are arranged at the positions, close to the end parts, of the two sides of the linkage shaft.
The rotating assembly comprises a gear 221 and a rack 21 which are meshed with each other, a first guide block 211 is welded on the top wall of the rack 21, the first guide block 211 slides between the inner walls of the fixed frame 2 to limit and guide the first guide block, the gear 221 is arranged on the linkage shaft 22 in a screw fixing mode and is arranged in the fixed frame 2, namely, an installation opening matched with the gear 221 is formed in the fixed frame 2, so that the gear 221 and the linkage shaft 22 can form a whole, a second screw rod is arranged in a mode of penetrating the inside of the rack 21 and along the length direction of the fixed frame 2, a first motor (the first motor is a rotating motor) for driving the first motor to rotate is arranged on one end of the second screw rod through a screw on the side wall of the fixed frame 2, disc-shaped rotating pieces 41 are sleeved on two ends of the linkage shaft 22, and a connecting rod 231 is arranged on the rotating pieces 41 in a screw-in mode.
Specifically, the first motor is used as a driving component to control the movement of the third screw, and the cooperation of the gear 221 and the rack 21 is used as a transmission component to enable the reciprocating linear movement of the rack 21 to realize the rotation movement of the gear 221, so that the linkage shaft 22 integrated with the gear 221 can synchronously perform the rotation movement along with the rotation of the gear 221, and then the synchronous rotation of the connecting rod 231 is driven.
The simulation mechanism comprises a rolling friction test assembly and a sliding friction test assembly, wherein in the simulation test process, the tire is an inflatable false target tire, and in the friction process of the false target such as a military vehicle, the friction receptor is the tire, so that the tire is directly used as a test object to detect the friction performance of the tire.
The rolling friction test assembly comprises a first fixing mechanism 3 for a tire, an adjusting plate 5 and an adjusting mechanism, the first fixing mechanism 3 comprises a first fixing disc 31, an adjusting disc 32 and a supporting assembly, an electric cylinder (not shown in the figure) capable of adjusting the distance between the first fixing disc 32 and the second fixing disc 31 is arranged between the adjusting disc 32 and the fixing disc 31, a cylinder body part of the electric cylinder is internally arranged between the inner walls of the fixing disc 31 and is positioned in the middle of the fixing disc, three first sensors 321 (the first sensors 321 are contact sensors) are circumferentially arranged on one side surface of the adjusting disc 32, the first sensors 321 are embedded on the surface of the adjusting disc 32, grooves are further formed in the adjusting disc 32 between every two adjacent first sensors 321, the supporting assembly comprises a supporting piece 8 in an arc structure and is used for supporting and fixing a hub groove of the pneumatic tire, a second guide block 81 is welded on the bottom wall of the supporting piece 8, the second guide block 81 slides between the inner walls of the grooves, a third screw rod in threaded transmission with the second guide block 81 is further arranged, a second motor driving the second motor (the second sensor is a second sensor is arranged inside the adjusting disc 32 on one side of the groove), and the second sensor is not shown in the arc surface, and the second sensor is embedded on the second sensor (the second sensor is not shown).
The transverse rod 24 is welded between the side walls of the fixing frame 2 on one side where the rolling friction test assembly is located, two fixing seats 25 which are symmetrically distributed are arranged on the transverse rod 24, the fixing seats 25 are installed on the transverse rod 24 through set screws, protrusions I which are connected with the fixing seats 25 into a whole are arranged on the fixing seats 25, one side of each protrusion I is provided with a rotating shaft I through shaft connection rotation, one side of the other protrusion I is provided with a rotating shaft II through shaft connection rotation, the rotating shaft penetrates through one end of the adjusting plate 5 and is fixed with the adjusting plate into a whole, a bottom groove is formed in the bottom wall of the adjusting plate 5, a sliding rod 52 which is arranged along the length direction of the sliding rod is inserted between the inner walls of the bottom groove, a sliding block 51 is arranged between the inner walls of the bottom groove in a sliding mode, the sliding block 51 can downwards pull the adjusting plate 5 along with the pulling action of the adjusting mechanism, the sliding rod 52 penetrates through the inside of the sliding block 51, and the protrusions II are integrally formed in the bottom wall of the sliding block 51.
The adjusting mechanism comprises an adjusting handle 7, a piston shaft 71 and a connecting piece 711, wherein a cavity is formed in the adjusting handle 7, sliding grooves 72 for guiding and limiting the sliding bolt 712 are formed in opposite inner walls of two sides of the cavity, the connecting piece 711 is in a U-shaped structure, one end of the piston shaft 71 is in threaded connection with the connecting piece 711 so as to be convenient to detach, the connecting piece 711 is installed between two side walls of the boss through shaft connection, the sliding bolt 712 penetrates through the other end of the piston shaft 71, the sliding bolt 712 slides between the sliding grooves 72 on two sides, and tension springs are further connected between the end of the piston shaft 71 close to one side of the sliding bolt 712 and the inner walls of the cavity, so that the piston shaft 71 always has a pulling force facing the direction of the adjusting handle 7, and the adjusting plate 5 can be always pressed above the tire.
The second rotating shaft penetrates through the end part of the adjusting handle 7 and is fixed with the end part of the adjusting handle into a whole, fixing plates 12 are fixed on two sides of the filling groove 11 through L-shaped sheets and bolts, the other ends of the first rotating shaft and the second rotating shaft are respectively and rotatably arranged on the fixing plates 12 on the two sides, and auxiliary supporting and positioning effects are provided for installation of the first rotating shaft and the second rotating shaft.
The cross bar 24 is provided with a through hole, the two ends of the through hole are embedded with a sensor III (the sensor III is a contact sensor, not shown in the figure and used for judging the movement position of the first connecting shaft 42), a connecting mechanism 4 is further arranged in a sliding manner along the length direction of the cross bar 24, the connecting mechanism 4 comprises a cylindrical rotating part 41, the first connecting shaft 42 and a U-shaped limiting part 43, the first connecting shaft 42 penetrates through the limiting part 43 and is adhered and fixed into a whole, the first connecting shaft 42 moves between the inner walls of the through hole, the limiting part 43 slides linearly along the top wall and the bottom wall of the cross bar 24, one end of the first connecting shaft 42 is connected with the fixed disc 31 and is rotationally arranged with the fixed disc 31, the rotating part 41 is installed on the other end of the first connecting shaft 42 in a shaft connection rotation mode, a rod hole penetrating through the connecting rod hole is formed in the rotating part 41, and the connecting rod 231 is not separated all the time.
In addition, in order to simulate the rolling effect of the tire, a plurality of tooth grooves 311 are uniformly formed in the outer wall of the fixed disc 31 along the circumferential direction, a plurality of convex teeth 14 are fixedly inserted on the test stand 1, and gaps of the convex teeth 14 are arranged at intervals of the tooth grooves 311 to adapt to each other, so that the fixed disc 31 can roll along the convex teeth 14.
Specifically, the tire and the first fixing mechanism 3 are fixed firstly, because the pneumatic tire simulates a real military vehicle tire, the tire is also provided with a hub part, the tire is provided with a hub groove, the tire is placed on a filled medium (i.e. sand or sandy soil and the like) to contact, the movement of the adjusting disk 32 is controlled by the PLC 13 until the three first sensors 321 are triggered to stop (i.e. the adjusting disk 32 is closely contacted with the surface of the tire), the supporting piece 8 is positioned in the middle position of the adjusting disk 32, then, the supporting piece 8 is driven to move to the other side by the screw three driving guide blocks 81 through the control of the PLC 13, so that the supporting piece 8 is driven to synchronously move to the side close to the inner wall of the hub groove, the sensors on the three supporting pieces 8 are triggered to automatically stop, at this time, the supporting piece 8 supports the hub groove of the tire, and the adjusting plate 5 is arranged on the outer upper side of the supporting piece to press and limit the supporting piece.
Then, the connecting rod 231 is driven to rotate synchronously by the driving mechanism, so that the rotating member 41 rotates along with the connecting rod 42 and the limiting member 43 simultaneously and the fixed disc 31 which moves along with the connecting rod 42 can roll in a meshed manner under the action of the convex teeth 14, so that the tire rolls above the medium filled in the filling groove 11, when the connecting rod 42 moves to the end wall of the through hole, the PLC controller 13 immediately changes the driving direction of the driving mechanism to move to the other side so as to realize the reciprocating multiple times of the test, and meanwhile, when the connecting rod 231 is in the state, the connecting rod 231 is not separated from the rotating member 41; in the whole test process, the adjusting plate 5 is always in the downward pulling effect by utilizing the action of the tension spring in the adjusting mechanism, so that the adjusting plate can be always pressed above the tire, if the inflatable tire has the condition of wrinkling or insufficient internal air pressure, the bottom contacted by the adjusting plate 5 can always keep a stable state by the downward pressing action of the adjusting plate, and the problem that the test result is influenced due to insufficient contact is avoided; after repeated tests, the tire is taken down to observe whether the surface of the tire remains intact or not, so as to judge the rolling friction performance of the tire.
The sliding friction test assembly comprises a second fixing mechanism 9 for the tire, a clamping mechanism and a sliding adjusting mechanism, wherein the structural arrangement of the second fixing mechanism 9 and the structural arrangement of the first fixing mechanism 3 are identical except that tooth grooves 311 are not formed in a fixing disc 31, and a connecting mechanism 4 connected with the second fixing mechanism 9 is also arranged on one side of the second fixing mechanism.
The transverse rod 24 is welded between the side walls of the fixing frame 2 on the side where the sliding friction test assembly is located, a through hole is formed in the transverse rod 24, the first connecting shaft 42 of the connecting mechanism 4 also moves between the inner walls of the through hole, the first screw 27 arranged along the length direction of the transverse rod 24 is further installed below the transverse rod 24, and the third motor (the third motor is a rotating motor) for driving the first screw 27 to rotate is installed on the side wall of the fixing frame 2 through screws at one end of the first screw 27.
The sliding adjusting mechanism comprises an adjusting seat 26, the two adjusting seats 26 are symmetrically arranged and are respectively arranged on a cross rod 24 and a first screw rod 27, the cross rod 24 penetrates through the adjusting seat 26 and is arranged in a sliding mode with the cross rod, the first screw rod 27 penetrates through the adjusting seat 26 and is in threaded connection with the adjusting seat, and the first screw rod 27 is formed by assembling two sections of sub-screws which are arranged in the same-direction threads through a coupler.
One side of each of the two adjusting seats 26 is welded with an integrated side seat 261, the clamping mechanism comprises a clamping plate 6, a connecting plate 61 and a connecting shaft II 62, the connecting plate 61 is fixed on one side wall of the clamping plate 6 through bolts, one end of the connecting shaft II 62 is screwed on the connecting plate 61 through threads to be fixed in the connecting plate 61, an integrated limit bump 622 is arranged at the other end of the connecting shaft II, a fixed sliding sheet 621 is adhered to the connecting shaft II 62, a cavity is formed in the side seat 261, the sliding sheet 621 slides between the inner walls of the cavity, and a spring is sleeved on one side of the sliding sheet 621 on the outer wall of the connecting shaft II 62.
Specifically, the other tire is fixed on one side of the second fixing mechanism 9 in the same way and is arranged between the two clamping plates 6, so that the two sides of the tire are clamped tightly all the time under the action of the springs by the clamping plates 6, the bottom contact surface of the tire can keep stable contact with the filling medium all the time, and then the driving of the first screw rod 27 is controlled by the PLC 13, so that the adjusting seats 26 on the two sides synchronously and uniformly reciprocate along the straight line direction, thereby simulating the sliding friction process of the tire; after several reciprocating tests, the tire is taken down to observe whether the surface of the tire remains intact or not, so as to judge the sliding friction performance of the tire.
In the embodiment, the first motor, the second motor, the third motor and the electric cylinder are all controlled by the PLC 13, and the first sensor, the second sensor and the third sensor are all controlled by electric signals transmitted between the PLC 13; a power supply seat is also arranged on the side wall of the test stand 1 at one side of the PLC controller 13, and the PLC controller 13 is connected with the power supply seat through a wire for electrifying.
Working principle: firstly, filling media required by a test into a filling groove 11 until the media are flush with the upper surface of a test bed 1, then fixing two tires to be tested with a first fixing mechanism 3 and a second fixing mechanism 9 on two sides respectively, simultaneously pressing an adjusting plate 5 above the tires on one side of the first fixing mechanism 3, clamping two clamping plates 6 on two sides of the tires on one side of the second fixing mechanism 9, and then driving connecting rods 231 on two sides to synchronously and co-directionally rotate by taking a driving mechanism as a power source, so that the first fixing mechanism 3 drives the tires on one side of the fixing mechanism 3 to roll, the second fixing mechanism 9 drives the tires on one side of the fixing mechanism to slide, and the two synchronously and co-directionally reciprocate above the media, and a good contact state with the media is kept at all times to ensure the accuracy of the test.
In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically connected, electrically connected or can be communicated with each other; may be directly connected, may be in communication with the interior of two elements or may be in interaction with two elements. The meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.
The inflatable false target abrasion resistance simulation test device provided by the embodiment of the application is described in detail, and specific examples are applied to explain the principle and the implementation mode of the application, and the description of the above examples is only used for helping to understand the technical scheme and the core idea of the application; those of ordinary skill in the art will appreciate that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the application.
Claims (10)
1. An inflatable decoy abrasion resistance performance simulation test device, which is characterized by comprising:
the test bed (1), a filling groove (11) is formed in the test bed (1), fixing frames (2) are arranged on two sides of the top wall of the test bed, and a PLC (programmable logic controller) 13 is further arranged on one side of the filling groove (11);
the driving mechanism comprises a linkage shaft (22), rotating assemblies and rotating pieces (23), wherein the linkage shaft (22) penetrates through the two fixing frames (2), the rotating assemblies are arranged at the positions, close to the end parts, of the two sides of the linkage shaft, so that the linkage shaft (22) can synchronously rotate at the two sides, disc-shaped rotating pieces (41) are arranged at the two ends of the linkage shaft (22), and connecting rods (231) are arranged on the rotating pieces (41);
the simulation mechanism comprises a rolling friction test assembly and a sliding friction test assembly, the rolling friction test assembly comprises a first fixing mechanism (3), an adjusting plate (5) and an adjusting mechanism, and the sliding friction test assembly comprises a second fixing mechanism (9), a clamping mechanism and a sliding adjusting mechanism;
the first fixing mechanism (3) and the second fixing mechanism (9) comprise a fixing disc (31), an adjusting disc (32) and a supporting component, the adjusting disc (32) moves on one side of the fixing disc (31), the supporting component is provided with three groups and linearly moves along the surface of one side of the adjusting disc (32), a plurality of tooth grooves (311) are uniformly formed in the circumferential surface of the fixing disc (31) in the first fixing mechanism (3), and a plurality of convex teeth (14) which are matched with the tooth grooves (311) and are uniformly arranged in a straight line are further arranged on the test bench (1);
the two sides of the fixing frame (2) are provided with cross bars (24) between the side walls, one cross bar (24) is fixedly provided with two symmetrical fixing seats (25), one side of one fixing seat (25) is connected with one end of the adjusting plate (5) through shaft connection, one side of the other fixing seat (25) is connected with one end of the adjusting mechanism through shaft connection, one side of the bottom wall of the adjusting plate (5) is also provided with a sliding part in a sliding mode, and the other end of the adjusting mechanism is movably connected with the sliding part;
two symmetrically distributed sliding adjusting mechanisms are arranged on the other cross rod (24) in a sliding mode, a side seat (261) is arranged on one side of each sliding adjusting mechanism, and each clamping mechanism elastically moves on one side of the corresponding side seat (261);
one side of the first fixing mechanism (3) and one side of the second fixing mechanism (9) are respectively provided with a connecting mechanism (4), each connecting mechanism (4) comprises a rotating piece (41) and a limiting piece (43), each limiting piece (43) is arranged in a sliding mode along the length direction of the transverse rod (24), and the connecting rod (231) penetrates through the corresponding rotating piece (41).
2. The inflatable false target abrasion resistance simulation test device according to claim 1, wherein fixing plates (12) are fixed on two sides of the upper surface of the test stand (1) through L-shaped sheets and bolts, protrusions I integrally connected with the fixing plates are arranged on the two fixing plates (25), a rotating shaft I and a rotating shaft II are respectively arranged on one side of each protrusion I on two sides through shaft connection and rotation, the rotating shaft I penetrates through one end of the adjusting plate (5) and is integrally connected with the adjusting plate, the rotating shaft II penetrates through one end of the adjusting mechanism and is integrally connected with the adjusting plate, and the other ends of the rotating shaft I and the rotating shaft II are respectively arranged on the fixing plates (12) on two sides in a rotating mode.
3. The inflatable false target abrasion resistance simulation test device according to claim 2, wherein the rotating assembly comprises a gear (221) and a rack (21) which are meshed with each other, a first guide block (211) is welded on the rack (21), the first guide block (211) slides between the inner walls of the fixing frame (2), a second screw rod in threaded connection with the first guide block is penetrated in the rack (21), and the gear (221) is fixedly installed on the linkage shaft (22) so that the gear and the rack form a whole.
4. The inflatable false target abrasion resistance simulation test device according to claim 3, wherein the cross rod (24) is provided with a through hole arranged along the length direction of the cross rod, the connecting mechanism (4) further comprises a first connecting shaft (42), the first fixing mechanism (3), the second fixing mechanism (9) and one end of the first connecting shaft (42) are rotatably connected, the other end of the first connecting shaft (42) and the rotating piece (41) are rotatably connected through a shaft, the first connecting shaft (42) is movable between the inner walls of the through hole, and the first connecting shaft (42) further penetrates through the limiting piece (43) and is fixedly adhered to the limiting piece;
wherein, when the first connecting shaft (42) is contacted with any end wall of the through hole, the connecting rod (231) is still arranged through the rotating piece (41).
5. The inflatable false target abrasion resistance simulation test device according to claim 4, wherein a bottom groove is formed in the bottom wall of the adjusting plate (5), a sliding rod (52) arranged along the length direction of the bottom groove is further arranged in the bottom groove, the sliding piece comprises a sliding block (51) and a protrusion II which are welded into a whole, the sliding block (51) is arranged between the inner walls of the bottom groove in a sliding mode, and the sliding block (51) is further arranged on the sliding rod (52) in a sliding mode.
6. The inflatable false target abrasion resistance simulation test device according to claim 5, wherein the adjusting mechanism comprises an adjusting handle (7), a piston shaft (71) and a connecting piece (711) with a U-shaped structure, a cavity is formed in the adjusting handle (7), a sliding bolt (712) is slidably arranged between inner walls of the cavity, one end of the piston shaft (71) is located in the cavity, the sliding bolt (712) penetrates through the end of the piston shaft (71), a tension spring is further connected between the piston shaft (71) and the inner walls of the cavity, so that the piston shaft (71) always has a tensile force towards the direction of the adjusting handle (7) to the connecting piece (711), the adjusting plate (5) can be always pressed above a tire, and the connecting piece (711) and the second protrusion are connected through a shaft.
7. The inflatable false target abrasion resistance simulation test device according to claim 6, wherein the clamping mechanism comprises a clamping plate (6), a connecting plate (61) and a second connecting shaft (62), the connecting plate (61) is fixedly connected with the clamping plate (6), one end of the second connecting shaft (62) is screwed in the connecting plate (61) through threads to be fixed, an integral limit bump (622) is arranged at the other end of the second connecting shaft (62), the second connecting shaft (62) penetrates through the side seat (261) to be arranged, a sliding sheet (621) is adhered to the outer wall of the second connecting shaft (62), a cavity is formed in the side seat (261), and the sliding sheet (621) elastically slides between the inner walls of the cavity.
8. The inflatable false target abrasion resistance simulation test device according to claim 7, wherein the sliding adjustment mechanism comprises an adjustment seat (26), one cross rod (24) penetrates through the adjustment seat (26) and is arranged in a sliding mode with the adjustment seat, a first screw rod (27) in threaded connection with the adjustment seat (26) is further penetrated inside the adjustment seat, the first screw rod (27) is arranged below the cross rod (24) and is rotatably arranged between the side walls of the fixing frame (2), and the first screw rod (27) comprises two sub screws which are equal in length and are arranged in the same direction in threads, and the two sub screws are fixedly connected through a coupling.
9. The inflatable false target abrasion resistance simulation test device according to claim 8, wherein the supporting component comprises a supporting piece (8), the supporting piece (8) is in an arc-shaped structure, a second guide block (81) is welded on the bottom wall of the supporting piece, a plurality of grooves are formed in the side wall surface of the adjusting disc (32), the second guide block (81) slides between the inner walls of the grooves, and a third screw rod penetrating through the second guide block (81) and in threaded transmission with the second guide block is further installed in the grooves.
10. The inflatable false target abrasion resistance simulation test device according to claim 9, wherein when the driving mechanism reciprocally rotates, the first fixing mechanism (3) makes linear rolling motion along the convex teeth (14), the second fixing mechanism (9) makes linear sliding motion, and the first fixing mechanism (3) and the second fixing mechanism (9) move in the same direction and synchronously.
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| CN202310859286.8A CN116577122B (en) | 2023-07-13 | 2023-07-13 | Inflatable false target abrasion resistance performance simulation test device |
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| CN116577122A (en) | 2023-08-11 |
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