CN113155479B - Vehicle guardrail test electro-hydraulic servo cylinder large platform test bench - Google Patents
Vehicle guardrail test electro-hydraulic servo cylinder large platform test bench Download PDFInfo
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- CN113155479B CN113155479B CN202110417322.6A CN202110417322A CN113155479B CN 113155479 B CN113155479 B CN 113155479B CN 202110417322 A CN202110417322 A CN 202110417322A CN 113155479 B CN113155479 B CN 113155479B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M17/00—Testing of vehicles
- G01M17/007—Wheeled or endless-tracked vehicles
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M17/00—Testing of vehicles
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- G01M17/0078—Shock-testing of vehicles
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Abstract
The invention relates to a vehicle guardrail test electro-hydraulic servo cylinder large platform test bed. The method comprises the following steps: the device comprises a guardrail test bed base part assembly (1), a pressing three-coordinate sliding table assembly (2), a guardrail reaction gantry frame assembly (3), a reaction seat (4), a hydraulic pump and synchronous motor assembly (5), a stroke actuator assembly (6) and an anti-unbalance loading guide rail and piston rod assembly (7). The hydraulic pump is connected with the stroke actuator assembly body (6) through a hydraulic pipeline with the synchronous motor assembly body (5), and the stroke actuator assembly body (6) drives the anti-unbalance-loading guide rail and the anti-unbalance-loading guide shaft frame assembly body (45) in the piston rod assembly body (7) to move linearly back and forth, so that loading of a test piece is achieved. The invention aims to solve the technical problem of making up the technical vacancy of the vehicle guardrail test stand at the present stage and meeting the technical requirements of the related national standards.
Description
Technical Field
The invention relates to a vehicle guardrail test bed, in particular to a vehicle guardrail test electro-hydraulic servo cylinder large platform test bed.
Background
With the rapid development of the automobile industry in China, particularly the great progress of large commercial vehicles, the demand of commercial vehicles in the market is rapidly increased, meanwhile, the traffic accidents caused by the commercial vehicles are continuously increased, and the vehicle safety is always a topic of concern in all circles of society. Wherein damage, loss and casualties caused by the side impact of commercial vehicles are extremely serious. The car is not provided with a side guard rail, and serious casualties can easily occur when the car is impacted by the side surface. For large trucks, when a small car is collided from the side, if the small car is not provided with a side guardrail, the small car is easy to drill into the bottom of the truck and directly seize, the survival chance is small, and the damage caused by side collision is serious. Therefore, in order to effectively protect and prevent or reduce such side impact accidents, research and design aiming at the side guardrail of the commercial vehicle have become important in recent years, meanwhile, the test method and technical requirements for the side guardrail of the commercial vehicle are also needed to be further improved urgently, and at the present stage, a technical gap exists in the aspect of a side guardrail test bed which meets the national standard.
Disclosure of Invention
The invention aims to solve the technical problem of making up the technical vacancy of the vehicle guardrail test stand at the present stage, meeting the technical requirements of relevant national standards, and providing the vehicle guardrail test electro-hydraulic servo cylinder large platform test stand.
In order to solve the technical problems, the invention is realized by adopting the following technical scheme: the vehicle guardrail test electro-hydraulic servo cylinder large platform test bed comprises a guardrail test bed base part assembly body, a pressure applying three-coordinate sliding table assembly body, a guardrail counter-force gantry frame assembly body, a counter-force seat, a hydraulic pump and synchronous motor assembly body, a stroke actuator assembly body, an anti-unbalance loading guide rail and piston rod assembly body.
The utility model provides a vehicle guardrail test electro-hydraulic servo jar big platform test bench, includes: the device comprises a guardrail test bed base part assembly body 1, a pressure applying three-coordinate sliding table assembly body 2, a guardrail reaction gantry frame assembly body 3, a reaction seat 4, a hydraulic pump and synchronous motor assembly body 5, a stroke actuator assembly body 6 and an anti-unbalance loading guide rail and piston rod assembly body 7, wherein a T-shaped groove and a bolt hole are formed in the upper surface of the guardrail test bed base part assembly body 1, the guardrail reaction gantry frame assembly body 3, the reaction seat 4, the hydraulic pump and the synchronous motor assembly body 5 are all installed on the working surface of the guardrail test bed base part assembly body 1 through the T-shaped groove and the bolt, and through holes are uniformly formed in the reaction seat 4 and used for adjusting a test piece under different test conditions;
the pressure applying three-coordinate sliding table assembly body 2 is installed on the guardrail test bed base part assembly body 1 in a sliding fit mode, the stroke actuator assembly body 6, the offset load resisting guide rail and the piston rod assembly body 7 are installed on the pressure applying three-coordinate sliding table assembly body 2, and the offset load resisting guide rail, the piston rod assembly body 7 and the stroke actuator assembly body 6 are matched with each other through shaft holes; the hydraulic pump is connected with the stroke actuator assembly body 6 through a hydraulic pipeline with the synchronous motor assembly body 5, and the stroke actuator assembly body 6 drives the anti-unbalance-loading guide rail and the anti-unbalance-loading guide shaft frame assembly body 45 in the piston rod assembly body 7 to move linearly back and forth, so that loading of a test piece is realized.
Further, the anti-unbalance loading guide rail and piston rod assembly 7 includes: the device comprises a constant-speed double-piston-rod assembly body 44 and an anti-unbalance-load guide shaft frame assembly body 45, wherein an anti-unbalance-load guide shaft of the anti-unbalance-load guide shaft frame assembly body 45 is matched with a shaft hole of a stroke actuator assembly body 6, and a spoke type force measuring sensor 46 and a spherical pressure head assembly body 47 are arranged at the rear end of the anti-unbalance-load guide shaft frame assembly body 45.
Further, guardrail test bench basis part assembly 1 includes: t type groove platform assembly body 8 and bottom plate guide rail rack assembly body 9, assembly body T type groove platform assembly body 8 comprises two basic gap bridge cast iron platforms that the structure is the same, and every basic gap bridge cast iron platform goes up working face processing has T type groove to fix on the ground through bolt.
Further, the bottom plate rail rack assembly 9 includes: guide rail foundatin plate 10, horizontal roll guide rail strip assembly body 11 and horizontal rack 12, guide rail foundatin plate 10 both sides evenly are provided with mounting bolt's screw thread blind hole, and horizontal roll guide rail strip assembly body 11 is fixed in on guide rail foundatin plate 10 through the bolt fastening, horizontal rack 12 is the standard component, is fixed in on the guide rail foundatin plate 10 between two horizontal roll guide rail strip assembly bodies 11, guide rail foundatin plate 10, horizontal roll guide rail strip assembly body 11, horizontal rack 12 are parallel to each other, transverse arrangement, and length is the same.
Further, the pressing three-coordinate sliding table assembly 2 includes: a transverse sliding table bottom plate 13, a transverse rolling guide rail sliding seat assembly 14, a transverse worm gear reducer assembly 15, a vertical sliding table welding body 16 and a longitudinal worm gear reducer assembly 17,
the transverse rolling guide rail sliding seat assembly 14 is arranged at the bottom of the transverse sliding table bottom plate 13 and is in sliding fit with the transverse rolling guide rail strip assembly 11; the transverse worm and gear speed reducer assembly body 15 is arranged in a rectangular through hole in the central position of the transverse sliding table bottom plate 13, the vertical sliding table welding body 16 is fixed on the upper surface of the transverse sliding table bottom plate 13 of the pressure-applying three-coordinate sliding table assembly body 2, and a straight gear of a motor assembly body 19 in the transverse worm and gear speed reducer assembly body 15 is meshed with the transverse rack 12 to drive the three-coordinate sliding table assembly body 2 and the stroke actuator assembly body 6 to move transversely; the longitudinal worm and gear speed reducer assembly 17 is fixed on the upper surface of the vertical sliding table welding body 16, and longitudinal linear motion of the stroke actuator assembly 6 is realized through connection with the front guardrail lifter lead screw 43 and the rear guardrail lifter lead screw 43.
Further, the transverse worm gear reducer assembly 15 includes: a shell 18 of a transverse worm and gear speed reducer assembly, a motor assembly 19, a single-head screw 20, a reducer worm gear shaft assembly 21 and a reducer connecting groove plate 22,
the reducer worm gear shaft assembly 21 is fixedly connected to the motor assembly 19 and the reducer connecting groove plate 22 through the transverse worm gear reducer assembly shell 18; the single-head screw 20 is matched with the motor assembly 19 through a shaft key and meshed with the reducer worm gear shaft assembly 21 through a bevel gear, and a straight gear of the reducer worm gear shaft assembly 21 is driven by the motor assembly 19 to enable the pressure-applying three-coordinate sliding table assembly 2 to do transverse linear motion.
Further, the vertical sliding table welding body 16 includes: the upper connecting plate 29 of the truss stand column of the front and rear guard rail test bed, the left truss stand column 23 of the front and rear guard rail test bed and the right truss stand column 24 of the front and rear guard rail test bed which have the same structure, the rear lower connecting plate 25 of the truss stand column of the front and rear guard rail test bed and the front lower connecting plate 26 of the truss stand column of the front and rear guard rail test bed, a longitudinal left rolling guide rail strip 27 and a longitudinal right rolling guide rail strip 28;
the upper part and the lower part of the left truss upright post 23 of the front and rear guard rail test bed and the right truss upright post 24 of the front and rear guard rail test bed are respectively connected through an upper connecting plate 29 of the truss upright post of the front and rear guard rail test bed and a lower connecting plate of the truss upright post of the front and rear guard rail test bed; the axes of the front and rear guardrail test bed left truss stand column 23 and the front and rear guardrail test bed right truss stand column 24 are parallel to each other and are perpendicular to the upper surface of the transverse sliding table bottom plate 13, and the longitudinal left rolling guide rail strip 27 and the longitudinal right rolling guide rail strip 28 are respectively fixed on the front and rear guardrail test bed left truss stand column 23 and the front and rear guardrail test bed right truss stand column 24.
Further, guardrail reaction gantry frame assembly 3 includes: front and back guardrail reaction left side truss assembly body 30, front and back guardrail reaction right side truss assembly body 31, reaction frame tie beam 32 and reaction lift beam assembly body 33, front and back guardrail reaction left side truss assembly body 30 is the same with front and back guardrail reaction right side truss assembly body 31 structure, the axis is parallel to each other, symmetry vertical fixation in T type groove platform assembly body 8's up-working face, reaction frame tie beam 32 and reaction lift beam assembly body 33 are installed in front and back guardrail reaction left side truss assembly body 30 and front and back guardrail reaction right side truss assembly body 31 upper portion to it is parallel with T type groove platform assembly body 8 upper plane.
Further, the front and rear guardrail reaction force left side truss assembly 30 includes: front and back guardrail reaction left side truss stand 34, front and back guardrail reaction lift assembly 35 and longitudinal long rolling guide rail bar 36, the casing of front and back guardrail reaction lift assembly 35 is fixed at the up end of front and back guardrail reaction left side truss stand 34, the lead screw in the reduction gear worm screw assembly of front and back guardrail reaction lift assembly 35 is fixed perpendicularly on the bottom plate upper surface of front and back guardrail reaction left side truss stand 34 through the spherical outside surface ball bearing of lower extreme and bearing frame assembly 38, front and back guardrail reaction right side truss assembly 31 is the same with front and back guardrail reaction left side truss assembly 30 mounting means.
Further, the reaction force elevating beam assembly 33 includes: a lifting reaction beam 39, a longitudinal rolling guide rail slide seat assembly 40, a lifting reaction beam slide seat 41 and a lifting reaction beam slide hook 42, wherein the longitudinal rolling guide rail slide seat assembly 40 is fixed at two ends of the lifting reaction beam 39 and is mutually matched with rolling guide rail bars of front and rear guardrail reaction side truss assemblies,
the lifting reaction cross beam 39 controls the whole longitudinal movement of the reaction lifting cross beam assembly body 33 through the front and rear guardrail reaction lifter assembly body 35; the lift reaction beam slide base 41 and the lift reaction beam slide hook 42 are fitted to each other through the shaft holes, and the positions thereof can be adjusted in the linear direction of the lift reaction beam 39.
Compared with the prior art, the invention has the beneficial effects that:
1. the electro-hydraulic servo cylinder large platform test bed for the vehicle guardrail test can simulate the reliability test of the vehicle guardrail when an accident occurs on an actual road, the stroke actuator can realize position adjustment in X, Y, Z three directions, and force loading is accurately carried out on the force application point of a test piece.
2. The stroke actuator used by the vehicle guardrail test electro-hydraulic servo cylinder large platform test bed can provide enough loading force and meet the technical requirements of national standards, so that the provided data has more correctness and authenticity.
3 the vehicle guardrail test electro-hydraulic servo cylinder large platform test bed has reasonable structural design, all parts are arranged on the test platform in a T-shaped bolt fixed connection mode, and if a certain part breaks down, the part can be conveniently overhauled or replaced, so that the test efficiency of the reliability of the vehicle guardrail is greatly improved.
4. The vehicle guardrail test electro-hydraulic servo cylinder large platform test bed can completely meet the technical requirements of relevant national standards in China, ensures the test accuracy, makes up for the technical shortage in the aspects of vehicle guardrails and protective component test beds, and has good promotion effects on improving the vehicle structure and the driving safety and reducing the collision harm.
Drawings
The invention is further described with reference to the accompanying drawings in which:
FIG. 1 is an axonometric projection view of a vehicle guardrail test electrohydraulic servo cylinder large platform test bed assembly;
FIG. 2 is an axonometric projection view of a reaction seat in a large platform test bed of the electrohydraulic servo cylinder for vehicle guardrail test, which is disclosed by the invention;
FIG. 3 is an axonometric view of a hydraulic pump and synchronous motor assembly in a vehicle guardrail test electro-hydraulic servo cylinder large platform test bed according to the invention;
FIG. 4 is an axonometric projection view of a guardrail test bed base part assembly in the vehicle guardrail test electro-hydraulic servo cylinder large platform test bed of the invention;
FIG. 5 is an axonometric projection view of a bottom plate, a guide rail and a rack assembly in the vehicle guardrail test electro-hydraulic servo cylinder large platform test bed;
FIG. 6 is an axonometric projection view of a pressure applying three-coordinate sliding table assembly in a vehicle guardrail test electro-hydraulic servo cylinder large platform test bed;
FIG. 7 is an axonometric projection view of a transverse worm and gear speed reducer assembly in a vehicle guardrail test electro-hydraulic servo cylinder large platform test bed;
FIG. 8 is an axonometric projection view of a vertical sliding table welding body in the vehicle guardrail test electro-hydraulic servo cylinder large platform test bed;
FIG. 9 is an axonometric projection view of a guardrail reaction force gantry frame assembly in the vehicle guardrail test electro-hydraulic servo cylinder large platform test bed of the invention;
FIG. 10 is an axonometric view of a front and rear guardrail reaction force left side truss assembly in a vehicle guardrail test electro-hydraulic servo cylinder large platform test bed according to the invention;
FIG. 11 is an axonometric view of a reducer worm screw assembly (guardrail reaction force) in a vehicle guardrail test electro-hydraulic servo cylinder large platform test bed according to the invention;
FIG. 12 is an axonometric projection view of an outer spherical surface ball bearing and a bearing seat assembly in the vehicle guardrail test electro-hydraulic servo cylinder large platform test bed of the invention;
FIG. 13 is an axonometric projection view of a reaction force lifting beam assembly in a vehicle guardrail test electro-hydraulic servo cylinder large platform test bed;
FIG. 14 is an axonometric view of the stroke actuator assembly in the vehicle guardrail testing electro-hydraulic servo cylinder large platform test bed of the invention;
FIG. 15 is an axonometric projection view of an anti-unbalance loading guide rail and a piston rod assembly body in the vehicle guardrail test electro-hydraulic servo cylinder large platform test bed;
FIG. 16 is an axonometric projection view of an anti-unbalance loading guide shaft frame assembly in a vehicle guardrail test electro-hydraulic servo cylinder large platform test bed;
in the figure: 1. a guardrail test bed base component assembly body, 2 a pressure three-coordinate sliding table assembly body, 3 a guardrail reaction gantry frame assembly body, 4 a reaction seat, 5 a hydraulic pump and synchronous motor assembly body, 6 a stroke actuator assembly body, 7 an anti-offset guide rail and piston rod assembly body, 8 a T-shaped groove platform assembly body, 9 a base plate, a guide rail, a rack assembly body, 10 a guide rail base plate, 11 a transverse rolling guide rail assembly body, 12 a transverse rack, 13 a transverse sliding table base plate, 14 a transverse rolling guide rail sliding seat assembly body, 15 a transverse worm gear reducer assembly body, 16 a vertical sliding table welding body, 17 a longitudinal worm gear reducer assembly body, 18 a transverse worm gear reducer assembly body shell, 19 a motor assembly body, 20 a single-head screw rod, 21 a reducer worm gear, a gear shaft assembly body, 22 a reducer connecting groove plate, 23. front and rear guard rail test bed left truss column, 24 front and rear guard rail test bed right truss column, 25 front and rear guard rail test bed truss column rear lower connecting plate, 26 front and rear guard rail test bed truss column front lower connecting plate, 27 longitudinal left rolling guide rail bar, 28 longitudinal right rolling guide rail bar, 29 front and rear guard rail test bed truss column upper connecting plate, 30 front and rear guard rail reaction left side truss assembly, 31 front and rear guard rail reaction right side truss assembly, 32 reaction frame connecting beam, 33 reaction force lifting beam assembly, 34 front and rear guard rail reaction left side truss column, 35 front and rear guard rail reaction lifter assembly, 36 longitudinal long rolling guide rail bar, 37 reducer worm screw rod (guard rail reaction) assembly, 38 outer spherical ball bearing and bearing block assembly, 39 lifting reaction beam, 40 longitudinal rolling guide rail slide carriage assembly, 41. the device comprises a lifting reaction beam sliding seat, a lifting reaction beam sliding hook, a front guardrail lifting screw rod, a rear guardrail lifting screw rod, a constant-speed double-piston-rod assembly body, a load-deflection-resisting guide shaft frame assembly body, a wheel spoke type force measuring sensor, and a spherical pressure head assembly body, wherein the lifting reaction beam sliding seat is 42, the lifting reaction beam sliding hook is 43, the front guardrail lifting screw rod and the rear guardrail lifting screw rod are 44, the constant-speed double-piston-rod assembly body is 45, the load-deflection-resisting guide shaft frame assembly body is 46, and the spherical pressure head assembly body is 47.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. The following examples are presented merely to further understand and practice the present invention and are not to be construed as further limiting the claims of the present invention. 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.
In the description of the present invention, where terms are involved, such as: the directional or positional relationships indicated by "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are based on the directional or positional relationships shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or part (element) referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; the two elements can be directly connected or indirectly connected through an intermediate medium, and the two elements can be communicated with each other internally, and can be flexibly connected, rigidly connected or movably connected. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The invention provides a vehicle guardrail test electro-hydraulic servo cylinder large platform test bed, which is used for meeting the requirement of reliability parameter detection of vehicle guardrails under various operating conditions. The test bed adopts a reasonable structural design of a load simulation system, can move in the direction of X, Y, Z three axes, meets the requirement of respectively testing different positions of a loading point of a test piece, and ensures the correctness and the authenticity of a test result of the reliability parameters of the vehicle guardrail. The research on the reliability of the vehicle guardrail has very high social value and wide social significance, has very good promotion effects on improving the structural safety of the vehicle and relieving the secondary damage caused by collision, and also has very good social benefit and economic benefit.
Referring to fig. 1 to 2, the vehicle guardrail test electro-hydraulic servo cylinder large platform test bed comprises a guardrail test bed base part assembly 1, a pressure applying three-coordinate sliding table assembly 2, a guardrail reaction gantry frame assembly 3, a reaction seat 4, a hydraulic pump and synchronous motor assembly 5, a stroke actuator assembly 6 and an anti-unbalance loading guide rail and piston rod assembly 7. The upper surface processing of guardrail test bench basis part assembly body 1 has T type groove and bolt hole, and guardrail reaction gantry frame assembly body 3, reaction seat 4, hydraulic pump all install working face on guardrail test bench basis part assembly body 1 through T type groove and bolt with the synchronous motor assembly body. The reaction base 4 is evenly provided with through holes, and the test piece can be adjusted according to different test conditions.
Referring to fig. 3, the hydraulic pump and synchronous motor assembly 5 is coupled to the stroke actuator assembly 6 via hydraulic lines. The hydraulic pump and the motor in the synchronous motor assembly body 5 provide hydraulic pressure force, and the motion of fluid in the stroke actuator assembly body 6 is controlled, so that the linear motion of the anti-unbalance-loading guide rail and the anti-unbalance-loading guide shaft frame assembly body 45 in the piston rod assembly body 7 along the Z-axis direction is driven, and the loading of the force of a test piece is realized. The slider assembly on the stroke actuator assembly 6 is matched with the longitudinal guide rail on the pressure-applying three-coordinate sliding table assembly 2, and the front and rear guardrail elevator lead screws 43 are meshed with the single-head screw of the longitudinal worm and gear speed reducer assembly 17 through gears. The anti-unbalance-loading guide rail and piston rod assembly body 7 comprises a constant-speed double-piston rod assembly body 44 and an anti-unbalance-loading guide shaft frame assembly body 45, an anti-unbalance-loading guide shaft of the anti-unbalance-loading guide shaft frame assembly body 45 is matched with the stroke actuator assembly body 6 through a shaft hole, and a spoke type force measuring sensor 46 and a spherical pressure head assembly body 47 are arranged at the rear end of the anti-unbalance-loading guide shaft frame assembly body 45.
Referring to fig. 4 and 5, the guardrail testing stand base assembly 1 is composed of a T-shaped groove platform assembly 8, a bottom plate, a guide rail and a rack assembly 9. Assembly body T type groove platform assembly body 8 form by the equipment of two basic gap bridge cast iron platforms that the structure is the same, single basic gap bridge cast iron platform size is 5.4mX1.4m, and the working face processing has T type groove on it, other assembly bodies on the mounting platform of being convenient for, basic gap bridge cast iron platform has the bolt hole in addition evenly processed, through the bolt fastening on the ground. The bottom plate, guide rail and rack assembly 9 comprises a guide rail base plate 10, a transverse rolling guide rail assembly 11 and a transverse rack 12. Guide rail foundatin plate 10 both sides evenly be provided with the screw thread blind hole of mounting bolt, also even processing has the bolt hole on the horizontal rolling guide rail strip assembly body 11, horizontal rolling guide rail strip assembly body 11 passes through the bolt fastening in guide rail foundatin plate 10, guarantee in same horizontal plane and parallel to each other, two horizontal rolling guide rail strip assembly body 11's interval is 900mm, horizontal rack 12 is the standard component, welded fastening in guide rail foundatin plate 10, be located between two horizontal rolling guide rail strip assembly bodies 11 to keep parallel with horizontal rolling guide rail strip assembly body 11. The long sides of the guide rail base plate 10, the transverse rolling guide rail bar assembly body 11 and the transverse rack 12 are parallel to each other, and the end faces of the short sides are aligned to ensure that the lengths are the same and are 3000 mm.
Referring to fig. 6, the pressure applying three-coordinate sliding table assembly 2 includes a transverse sliding table bottom plate 13, a transverse rolling guide rail sliding base assembly 14, a transverse worm gear reducer assembly 15, a vertical sliding table welding body 16, and a longitudinal worm gear reducer assembly 17. The three-coordinate sliding table assembly 2 for applying pressure is matched with the transverse rolling guide rail strip assembly 11 through the transverse rolling guide rail sliding seat assembly 14, the transverse rolling guide rail sliding seat assembly 14 adopts a steel ball with the diameter of 10mm, transverse movement of the three-coordinate sliding table assembly 2 in the X-axis direction is achieved, meanwhile, through meshing of a straight gear of a motor assembly 19 in a transverse worm and gear speed reducer assembly 15 below and a transverse rack 12, rotary motion of a motor is converted into the three-coordinate sliding table assembly 2 for applying pressure, and specifically, transverse movement of the stroke actuator assembly 6 in the X-axis direction is achieved. The longitudinal worm and gear speed reducer assembly 17 is fixed on the upper surface of the vertical sliding table welding body 16 through bolts, and the Y-axis longitudinal linear motion of the stroke actuator assembly 6 is realized through the connection with the front and rear guardrail lifter screw rods 43.
Referring to fig. 7, the transverse worm and gear reducer assembly 15 includes a transverse worm and gear reducer assembly housing 18, a motor assembly 19, a single-headed screw 20, a reducer worm wheel, gear, shaft mounting body 21, and a reducer coupling slot plate 22. The horizontal worm gear reducer assembly case 18 is provided with a screw hole on a contact surface with the motor assembly 19 and the reducer coupling groove plate 22, and is coupled by a bolt. The reducer worm wheel, gear and shaft assembly 21 mainly comprises a turbine reducer shaft, a locking nut, a bearing, an axial positioning sleeve, a helical gear and a spur gear. The central position of the transverse sliding table bottom plate 13 is provided with a rectangular through hole for mounting a transverse worm gear speed reducer assembly 15, and a transverse rolling guide rail sliding seat assembly 14 is connected to the lower surface of the transverse sliding table bottom plate 13 through bolts. The single-head screw is provided with a key groove, the single-head screw is matched with the motor assembly body 19 through a shaft key, and is meshed with the worm gear, the gear and the shaft assembly body 21 of the speed reducer through the helical gear, so that driving torque provided by the motor assembly body 19 is transmitted to the worm gear, the gear and the straight gear of the shaft assembly body 21 of the speed reducer, and transverse linear motion of the pressure applying three-coordinate sliding table assembly body 2 in the X-axis direction is realized.
Referring to fig. 8, the vertical sliding table welding body 16 includes a front and rear guardrail test bed left truss column 23, a front and rear guardrail test bed right truss column 24, a front and rear guardrail test bed truss column rear lower connecting plate 25, a front and rear guardrail test bed truss column front lower connecting plate 26, a longitudinal left rolling guide rail strip 27, a longitudinal right rolling guide rail strip 28 and a front and rear guardrail test bed truss column upper connecting plate 29, and the front and rear guardrail test bed left truss column 23 and the front and rear guardrail test bed right truss column 24 have the same structure; the rear lower connecting plate 25 of the truss stand column of the front and rear guard rail test bed and the front lower connecting plate 26 of the truss stand column of the front and rear guard rail test bed have the same structure; the longitudinal left rolling guide rail 27 and the longitudinal right rolling guide rail 28 are identical in structure. The whole vertical sliding table welding body 16 is fixedly welded on the upper surface of a transverse sliding table bottom plate 13 of the pressure three-coordinate sliding table assembly body 2, the axes of a front guardrail test bed left truss stand column 23 and a front guardrail test bed right truss stand column 24 are parallel to each other, the distance is 680mm, the front guardrail test bed left truss stand column and the front guardrail test bed right truss stand column are perpendicular to the upper surface of the transverse sliding table bottom plate 13, the lower part of the front guardrail test bed truss stand column is connected through a front guardrail test bed truss stand column lower connecting plate, and the upper part of the front guardrail test bed truss stand column is connected through a front guardrail test bed truss stand column upper connecting plate 29 and a rear guardrail test bed truss stand column upper connecting plate. The longitudinal left rolling guide rail strip 27 and the longitudinal right rolling guide rail strip 28 are respectively welded on the front and rear guardrail test bed left truss stand column 23 and the front and rear guardrail test bed right truss stand column 24, the axes of the rolling guide rail strips are guaranteed to be parallel to each other, are in the same plane with the axes of the front and rear guardrail test bed truss stand columns, and the distance is 680 mm.
Referring to fig. 9 to 12, the guard rail reaction force gantry frame assembly 3 includes a front and rear guard rail reaction force left side truss assembly 30, a front and rear guard rail reaction force right side truss assembly 31, a reaction frame connecting beam 32, and a reaction lifting beam assembly 33. The front and rear guardrail reaction left side truss assembly body 30 and the front and rear guardrail reaction right side truss assembly body 31 are identical in structure, are symmetrically and vertically fixed on the upper working face of the T-shaped groove platform assembly body 8 through bolts, are parallel to each other in the axis and are 3600mm apart from each other. The front and rear guardrail reaction left side truss assemblies 30 are comprised of front and rear guardrail reaction left side truss columns 34, front and rear guardrail reaction hoist assemblies 35, and longitudinal long rolling guide rails 36. Bolt holes are formed in the shell of the front guardrail counter-force elevator assembling body 35 and the shell of the rear guardrail counter-force elevator assembling body 35, the bolt holes are fixed to the upper end faces of the front guardrail counter-force left side truss stand columns 34 and the rear guardrail counter-force elevator assembling body 35 through bolts, a lead screw in a speed reducer worm screw (guardrail counter-force) assembling body of the front guardrail counter-force elevator assembling body 35 and the lead screw penetrate through holes reserved in the upper end faces of the front guardrail counter-force left side truss stand columns 34 and the rear guardrail counter-force left side truss stand columns 34, an outer spherical ball bearing and a bearing seat assembling body 38 at the lower end are perpendicularly fixed to the upper surface of a bottom plate of the front guardrail counter-force left side truss stand columns 34 and the rear guardrail counter-force left side truss stand columns 34 through bolts, and the lead screw is parallel to the axis of the front guardrail counter-force left side truss stand columns 34 and the rear guardrail counter-force left side truss stand columns. The axes of the front and rear guardrail reaction left side truss assemblies 30 and the front and rear guardrail reaction right side truss assemblies 31 are perpendicular to the upper plane of the T-shaped groove platform assembly 8, the front and rear guardrail reaction left side truss assemblies 31 and the front and rear guardrail reaction right side truss assemblies 31 are symmetrically arranged at the left and right sides of the pressure applying three-coordinate sliding table assembly 2, the front and rear guardrail reaction right side truss assemblies 31 and the front and rear guardrail reaction left side truss assemblies 30 are identical in structure, and the installation modes are identical.
Referring to fig. 13, the reaction force lifting beam assembly 33 includes a lifting reaction force beam 39, a longitudinal rolling guide rail sliding base (gantry frame) assembly 40, a lifting reaction force beam sliding base 41, and a lifting reaction force beam sliding hook 42, the longitudinal rolling guide rail sliding base (gantry frame) assembly 40 is fixed at two ends of the lifting reaction force beam 39 through bolts and is matched with rolling guide rails of the front and rear guardrail reaction side truss assemblies, through holes are formed in upper surfaces of two ends of the lifting reaction force beam 39 to realize matching with the front and rear guardrail reaction force lifter assembly 35, and linear motion of the reaction force lifting beam assembly 33 in the Y-axis longitudinal direction is realized. The lift reaction beam slide base 41 and the lift reaction beam slide hook 42 are fitted to each other through the shaft holes, and the positions thereof can be adjusted in the linear direction of the lift reaction beam 39 according to the actual test conditions. The long sides of the reaction frame connecting beam 32 and the reaction lifting beam assembly 33 are guaranteed to be parallel to the upper plane of the T-shaped groove platform assembly.
The working principle of the vehicle guardrail test electro-hydraulic servo cylinder large platform test bed is as follows:
a pressing three-coordinate sliding table assembly body 2 in a vehicle guardrail test electro-hydraulic servo cylinder large platform test bed is connected with a guardrail test bed base part assembly body 1 and a stroke actuator assembly body 6. The pressing three-coordinate sliding table assembly 2 is matched with a bottom plate, a guide rail and a rack assembly 9 of the guardrail test bed base part assembly 1 through a transverse rolling guide rail sliding seat assembly 14, a transverse worm and gear speed reducer assembly 15 provides driving torque, and the pressing three-coordinate sliding table assembly 2 exactly realizes the linear motion of the stroke actuator assembly 6 in the X-axis transverse direction; a longitudinal worm gear reducer assembly 17 in the pressure applying three-coordinate sliding table assembly 2 is connected with front and rear guardrail lifter lead screws 43 of the stroke actuator assembly 6 and provides driving torque, and a longitudinal left rolling guide rail bar 27 and a longitudinal right rolling guide rail bar are connected with a slider assembly of the stroke actuator assembly 6, so that the linear motion of the stroke actuator assembly 6 in the longitudinal direction of the Y axis is realized; the piston stroke of the stroke actuator assembly 6 itself realizes a linear motion in the Z-axis direction. The stroke actuator 6 can thus realize X, Y, Z position adjustment in three directions, and accurately load the force on the force application point of the test piece.
Details of standard components employed and employable in the examples:
1 30T transverse actuator, 1 hydraulic pump and synchronous motor using 4 kilowatt horizontal motor, 4 0.75 kilowatt 80M machine base 4-pole 8024 motor.
While embodiments of the invention have been disclosed above, it is not intended to be limited to the uses set forth in the specification and examples. It can be applied to all kinds of fields suitable for the present invention. Additional modifications will readily occur to those skilled in the art. Therefore, the invention is not to be limited to the specific details and illustrations shown and described herein, without departing from the general concept as defined by the claims and their equivalents.
Claims (9)
1. The utility model provides a big platform test bench of experimental electro-hydraulic servo cylinder of vehicle guardrail, includes: a guardrail test bed base part assembly body (1), a pressure applying three-coordinate sliding table assembly body (2), a guardrail reaction gantry frame assembly body (3), a reaction seat (4), a hydraulic pump and synchronous motor assembly body (5), a stroke actuator assembly body (6) and an anti-unbalance loading guide rail and piston rod assembly body (7),
the upper surface of the guardrail test bed basic component assembly body (1) is provided with a T-shaped groove and bolt holes, the guardrail counter-force gantry frame assembly body (3), the counter-force seat (4), the hydraulic pump and synchronous motor assembly body (5) are all arranged on the working surface of the guardrail test bed basic component assembly body (1) through the T-shaped groove and the bolts, and the counter-force seat (4) is uniformly provided with through holes for adjusting test pieces under different test conditions;
the pressure applying three-coordinate sliding table assembly body (2) is arranged on the guardrail test bed base part assembly body (1) in a sliding fit mode, the stroke actuator assembly body (6), the offset load resisting guide rail and piston rod assembly body (7) are arranged on the pressure applying three-coordinate sliding table assembly body (2), and the offset load resisting guide rail and piston rod assembly body (7) are matched with the stroke actuator assembly body (6) through shaft holes; the hydraulic pump and synchronous motor assembly body (5) is connected with the stroke actuator assembly body (6) through a hydraulic pipeline, the stroke actuator assembly body (6) drives the anti-unbalance-loading guide rail and the anti-unbalance-loading guide shaft frame assembly body (45) in the piston rod assembly body (7) to move linearly back and forth, and loading on a test piece is achieved;
the three coordinate slip table assembly of exerting pressure (2) includes: a transverse sliding table bottom plate (13), a transverse rolling guide rail sliding seat assembly body (14), a transverse worm gear speed reducer assembly body (15), a vertical sliding table welding body (16) and a longitudinal worm gear speed reducer assembly body (17),
the transverse rolling guide rail sliding seat assembly body (14) is arranged at the bottom of the transverse sliding table bottom plate (13) and is in sliding fit with the transverse rolling guide rail strip assembly body (11); the transverse worm and gear speed reducer assembly body (15) is arranged in a rectangular through hole in the central position of the transverse sliding table bottom plate (13), the vertical sliding table welding body (16) is fixed on the upper surface of the transverse sliding table bottom plate (13) of the pressure-applying three-coordinate sliding table assembly body (2), and a straight gear of a motor assembly body (19) in the transverse worm and gear speed reducer assembly body (15) is meshed with a transverse rack (12) to drive the three-coordinate sliding table assembly body (2) and a stroke actuator assembly body (6) to move transversely; the longitudinal worm and gear speed reducer assembly body (17) is fixed on the upper surface of the vertical sliding table welding body (16), and longitudinal linear motion of the stroke actuator assembly body (6) is realized through connection with a front guardrail lifting machine lead screw (43) and a rear guardrail lifting machine lead screw (43).
2. The vehicle guardrail testing electro-hydraulic servo cylinder large platform test bed as claimed in claim 1, wherein the anti-unbalance loading guide rail and piston rod assembly (7) comprises: the device comprises a constant-speed double-piston-rod assembly body (44) and an anti-unbalance-load guide shaft frame assembly body (45), wherein an unbalance-load-resisting guide shaft of the anti-unbalance-load guide shaft frame assembly body (45) is matched with a shaft hole of a stroke actuator assembly body (6), and a spoke-type force measuring sensor (46) and a spherical pressure head assembly body (47) are arranged at the rear end of the anti-unbalance-load guide shaft frame assembly body (45).
3. The vehicle guardrail testing electro-hydraulic servo cylinder large platform test bed as claimed in claim 1, wherein the guardrail test bed base part assembly body (1) comprises: t type groove platform assembly body (8) and bottom plate guide rail rack assembly body (9), T type groove platform assembly body (8) comprise two basic gap bridge cast iron platforms that the structure is the same, and every basic gap bridge cast iron platform goes up working face processing has T type groove to fix on the ground through the bolt.
4. The vehicle guardrail testing electro-hydraulic servo cylinder large platform test bed as claimed in claim 3, wherein the bottom plate guide rail rack assembly (9) comprises: guide rail foundatin plate (10), horizontal roll guide rail strip assembly body (11) and horizontal rack (12), guide rail foundatin plate (10) both sides evenly are provided with the screw thread blind hole of construction bolt, and horizontal roll guide rail strip assembly body (11) are fixed in on guide rail foundatin plate (10) through the bolt, horizontal rack (12) are the standard component, are fixed in on guide rail foundatin plate (10) between two horizontal roll guide rail strip assembly bodies (11), guide rail foundatin plate (10), horizontal roll guide rail strip assembly body (11), horizontal rack (12) are parallel to each other, transverse arrangement, and length is the same.
5. The vehicle guardrail testing electro-hydraulic servo cylinder large platform test bed as claimed in claim 1, wherein the transverse worm gear reducer assembly (15) comprises: a shell (18) of a transverse worm and gear speed reducer assembly body, a motor assembly body (19), a single-head screw (20), a speed reducer worm gear shaft assembly body (21) and a speed reducer connecting groove plate (22),
the reducer worm gear shaft assembly body (21) is fixedly connected to the motor assembly body (19) and the reducer connecting groove plate (22) through a transverse worm gear reducer assembly body shell (18); the single-head screw rod (20) is matched with the motor assembly body (19) through a shaft key and meshed with the reducer worm gear shaft assembly body (21) through a bevel gear, and a straight gear of the reducer worm gear shaft assembly body (21) is driven by the motor assembly body (19) to enable the pressing three-coordinate sliding table assembly body (2) to do transverse linear motion.
6. The vehicle guardrail testing electro-hydraulic servo cylinder large platform test bed as claimed in claim 1, wherein the vertical sliding table welding body (16) comprises: the device comprises a front and rear guardrail test bed truss stand column upper connecting plate (29), a front and rear guardrail test bed left truss stand column (23), a front and rear guardrail test bed right truss stand column (24), a front and rear guardrail test bed truss stand column rear lower connecting plate (25), a front and rear guardrail test bed truss stand column front lower connecting plate (26), a longitudinal left rolling guide rail strip (27) and a longitudinal right rolling guide rail strip (28), wherein the front and rear guardrail test bed truss stand column upper connecting plate and the front and rear guardrail test bed right truss stand column are identical in structure;
the upper part and the lower part of the left truss upright post (23) of the front and rear guard rail test bed and the right truss upright post (24) of the front and rear guard rail test bed are respectively connected with the upper connecting plate (29) of the truss upright post of the front and rear guard rail test bed and the lower connecting plate of the truss upright post of the front and rear guard rail test bed; front and back rail guard test bed left side truss stand (23) and front and back rail guard test bed right truss stand (24) axis are parallel to each other to with the last surface vertical of horizontal slip table bottom plate (13), indulge left side roll guide rail strip (27) and vertical right roll guide rail strip (28) and be fixed in respectively around on rail guard test bed left side truss stand (23) and the rail guard test bed right truss stand (24) around with.
7. The vehicle guardrail testing electro-hydraulic servo cylinder large platform test bed as claimed in claim 1, wherein the guardrail reaction gantry frame assembly (3) comprises: front and back guardrail reaction left side truss assembly body (30), front and back guardrail reaction right side truss assembly body (31), reaction frame hookup crossbeam (32) and reaction lift crossbeam assembly body (33), front and back guardrail reaction left side truss assembly body (30) and front and back guardrail reaction right side truss assembly body (31) the same structure, the axis is parallel to each other, symmetry vertical fixation in the last working face of T type groove platform assembly body (8), reaction frame hookup crossbeam (32) and reaction lift crossbeam assembly body (33) are installed in front and back guardrail reaction left side truss assembly body (30) and front and back guardrail reaction right side truss assembly body (31) upper portion to it is parallel with T type groove platform assembly body (8) upper plane.
8. The vehicle guardrail test electro-hydraulic servo cylinder large platform test bed as claimed in claim 7,
guardrail counter force left side truss assembly body (30) around, include: front and back guardrail reaction left side truss stand (34), front and back guardrail reaction lift assembly body (35) and vertical long rolling guide rail bar (36), the casing of front and back guardrail reaction lift assembly body (35) is fixed at the up end of front and back guardrail reaction left side truss stand (34), the lead screw in the reduction gear worm screw assembly body of front and back guardrail reaction lift assembly body (35), the bottom plate upper surface of front and back guardrail reaction left side truss stand (34) is fixed perpendicularly through spherical outside ball bearing and bearing frame assembly body (38) of lower extreme, front and back guardrail reaction right side truss assembly body (31) is the same with front and back guardrail reaction left side truss assembly body (30) mounting mode.
9. The vehicle guardrail test electro-hydraulic servo cylinder large platform test bed as claimed in claim 7, wherein the reaction lifting beam assembly (33) comprises: a lifting reaction beam (39), a longitudinal rolling guide rail slide seat assembly body (40), a lifting reaction beam slide seat (41) and a lifting reaction beam slide hook (42), wherein the longitudinal rolling guide rail slide seat assembly body (40) is fixed at two ends of the lifting reaction beam (39) and is mutually matched with rolling guide rail bars of front and rear guardrail reaction side truss assembly bodies,
the lifting reaction cross beam (39) controls the whole longitudinal movement of the reaction lifting cross beam assembly body (33) through the front and rear guardrail reaction lifter assembly body (35); the lifting reaction beam sliding seat (41) and the lifting reaction beam sliding hook (42) are matched with each other through the shaft hole, and the positions of the lifting reaction beam sliding seat and the lifting reaction beam sliding hook can be adjusted along the linear direction of the lifting reaction beam (39).
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