CN208636048U - A kind of loading device based on the test of car body quasistatic compression - Google Patents
A kind of loading device based on the test of car body quasistatic compression Download PDFInfo
- Publication number
- CN208636048U CN208636048U CN201820751421.1U CN201820751421U CN208636048U CN 208636048 U CN208636048 U CN 208636048U CN 201820751421 U CN201820751421 U CN 201820751421U CN 208636048 U CN208636048 U CN 208636048U
- Authority
- CN
- China
- Prior art keywords
- cross beam
- loading
- vehicle body
- crossbeam
- loading device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000012360 testing method Methods 0.000 title claims abstract description 38
- 230000006835 compression Effects 0.000 title abstract description 11
- 238000007906 compression Methods 0.000 title abstract description 11
- 238000006243 chemical reaction Methods 0.000 claims abstract description 65
- 238000012669 compression test Methods 0.000 claims description 10
- 230000003014 reinforcing effect Effects 0.000 claims description 5
- 238000003825 pressing Methods 0.000 claims description 3
- 238000011065 in-situ storage Methods 0.000 abstract 1
- 238000006073 displacement reaction Methods 0.000 description 15
- 238000000034 method Methods 0.000 description 10
- 238000013461 design Methods 0.000 description 5
- 241000271559 Dromaiidae Species 0.000 description 4
- 238000012544 monitoring process Methods 0.000 description 4
- 238000011160 research Methods 0.000 description 3
- 238000012795 verification Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000002146 bilateral effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000012938 design process Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The utility model discloses a kind of loading devices based on the test of car body quasistatic compression, including vehicle body strength test stand, cross beam support frame, crossbeam supporting plate, load crossbeam, only counter-force crossbeam, longitudinal tie；Load crossbeam and only counter-force crossbeam are respectively arranged the outside in two headwalls of car body and are connected with cross beam support frame by crossbeam supporting plate respectively, and cross beam support erection is placed on the lead screw of vehicle body strength test stand；Load crossbeam passes through sliding connection structure with only counter-force crossbeam and connects with respect to crossbeam supporting plate slip；The both ends of longitudinal tie are separately connected load crossbeam and only counter-force crossbeam, form closed framework structure；It loads crossbeam and is equipped with servo hydraulic cylinder, only counter-force crossbeam is equipped with the only counter-force lead screw coaxially arranged with servo hydraulic cylinder.This programme uses the relative equilibrium principle and closed framework structure of power, has very high intensity and convenient and fast assembled in situ condition, improves test efficiency suitable for different test car bodies without huge ground reaction force holder structure.
Description
Technical Field
The utility model relates to a rail vehicle tests technical field, especially relates to a loading device based on car body quasi-static compression test.
Background
With the rapid development of rail transit, various component structures of vehicles have diversified and rapid design requirements, and vehicle bodies serving as main bearing components of the vehicles face a plurality of difficulties of light weight, high strength and complicated structure in the design and manufacturing process. Meanwhile, after the new vehicle type is manufactured in a trial mode, a large amount of test verification needs to be carried out on the strength and the rigidity of the vehicle body to support the vehicle design. The quasi-static strength and rigidity test of the vehicle body is an important theoretical support and strength checking method in vehicle body test verification. The quasi-static loading point of the vehicle body is located at the position where the vertical height of the end part of the vehicle is very high, and in the longitudinal loading process, because loading load and loading force arm are large, if a traditional reaction force stopping loading mode is used, an ultra-large reaction force base needs to be designed, and the requirements of a quasi-static loading test of a vehicle body structure can not be met in the aspects of a test period, economy and the like, so that a loading device is urgently needed to be designed.
SUMMERY OF THE UTILITY MODEL
In view of the above, the present invention provides a loading device based on quasi-static compression test of car body, which is used for the research of quasi-static compression test of car body of rail vehicles such as high-speed motor train unit, inter-city motor train unit, subway vehicle, etc.,
in order to achieve the above purpose, the utility model provides a following technical scheme:
the utility model provides a loading device based on car body quasi-static compression test, includes: the device comprises a vehicle body strength test bed, a cross beam support frame, a cross beam supporting plate, a loading cross beam, a reaction stopping cross beam and a longitudinal pull rod; wherein,
the loading cross beam is used for being arranged on the outer side of a first end wall of a vehicle body, the reaction stopping cross beam is used for being arranged on the outer side of a second end wall of the vehicle body, the lower part of the loading cross beam and the lower part of the reaction stopping cross beam are respectively connected with the cross beam supporting frame through the cross beam supporting plate, and the cross beam supporting frame is arranged above a lead screw of the vehicle body strength test bed;
the cross beam supporting plate is provided with a sliding connection structure, and the loading cross beam and the reaction stopping cross beam can slide relative to the cross beam supporting plate along the front and back directions of the vehicle body through the sliding connection structure;
the longitudinal pull rods are arranged symmetrically in the left and right directions of the vehicle body, and two ends of each longitudinal pull rod are fixedly connected to the loading cross beam and the reaction stopping cross beam respectively;
the loading cross beam is provided with a servo hydraulic cylinder used for applying pressure to the first end wall, the servo hydraulic cylinder is connected with a hydraulic servo loading system, the stop reaction cross beam is provided with a stop reaction screw rod used for supporting the second end wall, and the axis of the servo hydraulic cylinder coincides with the axis of the stop reaction screw rod.
Preferably, in the above loading device, the sliding connection structure includes an oblong hole structure and a connection column slidably penetrating through the oblong hole structure.
Preferably, in the above-described loading device, the oblong hole structure is provided on the loading cross member and the reaction stopping cross member,
and/or
The long round hole structure is arranged on the beam supporting plate.
Preferably, in the loading device, the connecting column includes a connecting stud and a clamping nut connected to an end of the connecting stud.
Preferably, a plurality of vertical supporting rods are uniformly arranged below each vertical pull rod, the lower ends of the vertical supporting rods are connected to the vehicle body strength test bed, vertical pull rod brackets used for supporting the vertical pull rods are arranged at the upper ends of the vertical supporting rods, and the vertical pull rods can slide relative to the vertical pull rod brackets along the axial direction.
Preferably, in the loading device, the upper end of the vertical support rod is provided with a fine adjustment structure for adjusting the height of the longitudinal pull rod bracket.
Preferably, each longitudinal pull rod comprises a plurality of sectional pull rods which are sequentially connected and fixed, and a flange seat and a reinforcing plate are arranged at the end part of each sectional pull rod.
Preferably, a loading head assembly used for abutting against the first end wall is arranged at the tail end of the servo hydraulic cylinder, a force sensor is arranged between the loading head assembly and the servo hydraulic cylinder, and the force sensor is connected to the hydraulic servo loading system.
Preferably, the number of the longitudinal pull rods is two, the two longitudinal pull rods are arranged on the left side and the right side of the vehicle body in parallel, the number of the two servo hydraulic cylinders is two, and the two servo hydraulic cylinders are symmetrically arranged in the left-right direction of the vehicle body.
Preferably, the beam support frame is arranged on a lead screw of the vehicle body strength test bed through a bottom support beam and a lead screw locking seat.
The utility model provides a loading device based on car body quasi-static compression test, include: the device comprises a vehicle body strength test bed, a cross beam support frame, a cross beam supporting plate, a loading cross beam, a reaction stopping cross beam and a longitudinal pull rod; the loading cross beam and the reaction stopping cross beam are respectively arranged at the outer sides of two end walls of the car body and are respectively connected with a cross beam support frame through cross beam supporting plates, and the cross beam support frames are arranged on a lead screw of the car body strength test bed; the loading cross beam and the reaction stopping cross beam are connected in a sliding way relative to the cross beam supporting plate through a sliding connection structure; two ends of the longitudinal pull rod are respectively connected with the loading cross beam and the reaction stopping cross beam to form a closed frame structure; the loading beam is provided with a servo hydraulic cylinder, and the stop reaction beam is provided with a stop reaction screw rod which is coaxially arranged with the servo hydraulic cylinder.
During the test, fix the automobile body in the center of closed frame construction, utilize servo hydraulic cylinder to exert compression load to the automobile body, compress tightly the automobile body with the contrary reaction lead screw that ends of opposite side jointly, under reaction force, vertical pull rod receives the pulling force effect with compression load equidimension to accomplish the application of load. The sliding connection structure is used for releasing the longitudinal displacement of the loading cross beam and the reaction stopping cross beam in the loading process, and the compression load of the vehicle body can be uniformly applied.
The utility model adopts the principle of relative balance of force and a closed frame structure, has very high strength and convenient field assembly conditions in structure, does not need a huge ground counter-force seat structure, can adapt to different test vehicle bodies, and improves the test efficiency; the loading source adopts a servo hydraulic cylinder to realize the uniform application of quasi-static loading load of the vehicle body, and can accurately control parameters such as loading force, loading speed, loading displacement and the like; the loading system adopts closed-loop control, and can load the vehicle and realize the monitoring and acquisition of parameters by adopting a force control or displacement control mode. The utility model discloses can be used for carrying out the quasi-static compression test research of automobile bodies such as high-speed EMUs, intercity EMUs, railcar.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a front view of a loading device in an embodiment of the present invention;
fig. 2 is a top view of a loading device in an embodiment of the present invention;
fig. 3 is a side view of a loading device in an embodiment of the invention;
fig. 4 is a partial schematic view of the connection between the loading beam and the servo hydraulic cylinder according to the embodiment of the present invention;
FIG. 5 is a partial schematic view of the connection of the stop reaction cross beam and the stop reaction lead screw according to an embodiment of the present invention;
fig. 6 is a schematic structural view of a longitudinal pull rod according to an embodiment of the present invention.
In fig. 1 to 6:
the device comprises a 1-hydraulic servo loading system, a 2-four-channel hydraulic module, a 3-loading cross beam, a 4-servo hydraulic cylinder, a 5-force sensor, a 6-loading head assembly, a 7-longitudinal pull rod, an 8-stop counter force cross beam, a 9-stop counter force lead screw, a 10-lead screw locking nut, an 11-flange seat, a 12-reinforcing plate, a 13-vertical supporting rod, a 14-cross beam supporting plate, a 15-bottom supporting cross beam, a 16-lead screw locking seat, a 17-vehicle body strength test bed, an 18-vehicle body, a 19-longitudinal pull rod bracket, a 20-cross beam supporting frame and a 21-lead screw.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Please refer to fig. 1 to 6, fig. 1 is a front view of a loading device in an embodiment of the present invention, fig. 2 is a top view of a loading device in an embodiment of the present invention, fig. 3 is a side view of a loading device in an embodiment of the present invention, fig. 4 is a partial schematic view of a loading beam connected to a servo hydraulic cylinder in an embodiment of the present invention, fig. 5 is a partial schematic view of a stop counter-force beam connected to a stop counter-force screw in an embodiment of the present invention, and fig. 6 is a schematic view of a longitudinal pull rod in an embodiment of the present invention.
The utility model discloses combine automobile body strength test platform 17, designed a loading device based on car body quasi-static compression is experimental for carry out the experimental research of quasi-static compression automobile body intensity, rigidity of automobile bodies such as high-speed EMUs, intercity EMUs, railcar. The loading device comprises: the device comprises a vehicle body strength test bed 17, a cross beam support frame 20, a cross beam support plate 14, a loading cross beam 3, a reaction stopping cross beam 8 and a longitudinal pull rod 7. The structures and the connection relations of the components are as follows:
the loading cross beam 3 is used for being arranged on the outer side of a first end wall of the car body 18, the reaction stopping cross beam 8 is used for being arranged on the outer side of a second end wall of the car body 18, the lower portion of the loading cross beam 3 and the lower portion of the reaction stopping cross beam 8 are respectively connected with a cross beam support frame 20 through cross beam support plates 14, and the cross beam support frames 20 are arranged above a screw rod 21 of a car body strength test bed 17 and play a role in supporting the two cross beams;
the beam supporting plate 14 is provided with a sliding connection structure, and the loading beam 3 and the reaction stopping beam 8 can slide relative to the beam supporting plate 14 through the sliding connection structure along the front and back directions of the vehicle body 18;
the plurality of longitudinal pull rods 7 are symmetrically arranged in the left and right direction of the vehicle body 18, and two ends of each longitudinal pull rod 7 are respectively and fixedly connected with the loading cross beam 3 and the reaction stopping cross beam 8, so that a closed frame structure is formed;
the loading beam 3 is provided with a servo hydraulic cylinder 4 for applying pressure to the first end wall, the servo hydraulic cylinder 4 is connected with a hydraulic servo loading system 1, the stop reaction beam 8 is provided with a stop reaction screw 9 for supporting the second end wall, and the axis of the servo hydraulic cylinder 4 coincides with the axis of the stop reaction screw 9.
During the test, the vehicle body 18 is fixed at the center of the closed frame structure, the servo hydraulic cylinder 4 is used for applying a compression load to the vehicle body 18, the vehicle body 18 is pressed together with the stop reaction lead screw 9 on the other side, the loading central line of the servo hydraulic cylinder 4 is superposed with the central line of the stop reaction lead screw 9, and under the reaction force, the longitudinal pull rod 7 is under the action of the tensile force with the same magnitude as the compression load, so that the load application is completed. The sliding connection structure is used for releasing the longitudinal displacement of the loading cross beam 3 and the reaction stopping cross beam 8 in the loading process, and the compression load of the vehicle body 18 can be uniformly applied.
The utility model adopts the principle of relative balance of force and a closed frame structure, has very high strength and convenient field assembly conditions in structure, does not need a huge ground counter-force seat structure, can adapt to different test vehicle bodies, and improves the test efficiency; the loading source adopts a servo hydraulic cylinder to realize the uniform application of quasi-static loading load of the vehicle body, and can accurately control parameters such as loading force, loading speed, loading displacement and the like; the loading system adopts closed-loop control, and can load the vehicle and realize the monitoring and acquisition of parameters by adopting a force control or displacement control mode.
It should be noted that the sliding connection structure is used for releasing the longitudinal displacement of the loading cross beam 3 and the reaction-stopping cross beam 8 during the loading process, and the sliding connection structure may specifically adopt various structural forms, such as a sliding rail chute connection structure, a connection column and slotted hole connection structure, a tubular column sliding connection structure, and the like. During assembly, the connecting column penetrates through the long circular hole structure, then two ends of the connecting column are clamped or fixed on the lower beam supporting plate 14 and the upper beam respectively, the connecting column only limits relative displacement between the beam supporting plate 14 and the upper beam in the vertical direction, and the two beams can slide on the beam supporting plate 14.
It should be noted that the slotted hole structures may be specifically disposed on the loading beam 3 and the reaction stopping beam 8, or on the beam support plate 14, and certainly, corresponding slotted hole structures may also be disposed on the loading beam 4, the reaction stopping beam 8, and the beam support plate 14, and when assembling, the connecting column passes through the slotted hole structures, but cannot be fastened, so as to release the longitudinal displacement of the beams in the loading process, that is, the two beams may slide on the beam support plate 14, and the connecting column only limits the degree of freedom of the beams in the vertical direction.
It should be noted that the connecting column may be designed into various structures, such as a stud nut structure, or a connecting column structure with a clamping joint at both ends, and preferably, the connecting column in the embodiment includes a connecting stud and a clamping nut connected to an end of the connecting stud. The clamping nut is used for clamping the outer side of the long circular hole structure of the beam supporting plate 14 or the outer side of the long circular hole structure of the loading beam 3 or the reaction stopping beam 8.
It should be noted that the longitudinal tie rods 7 serve to connect the loading beam 3 and the reaction stop beam 8 and to transmit a pulling force to the reaction stop beam 8 when the servo cylinder 4 is actuated, so that the loading beam 3 and the reaction stop beam 8 together compress the vehicle body 18. In order to reduce the deformation of the longitudinal pull rod 7, preferably, a plurality of vertical support rods 13 are arranged below each longitudinal pull rod 7, the lower ends of the vertical support rods 13 are connected to a vehicle body strength test bed 17, longitudinal pull rod brackets 19 for supporting the longitudinal pull rods 7 are arranged at the upper ends of the vertical support rods 13, the longitudinal pull rods 7 can slide relative to the longitudinal pull rod brackets 19 along the self axial direction, and the contact positions between the longitudinal pull rod brackets 19 and the longitudinal pull rods 7 do not need to be fixed and are used for releasing the longitudinal displacement of the longitudinal pull rods 7 in the loading process.
Preferably, the upper end of the vertical support bar 13 is provided with a fine adjustment structure for adjusting the height of the longitudinal tie bar bracket 19. The height of the longitudinal tie rod bracket 19 can be changed by adjusting the fine adjustment structure, so that the longitudinal tie rod bracket 19 can well support the longitudinal tie rod 7 without influencing the longitudinal sliding of the longitudinal tie rod 7. Specifically, the fine adjustment structure can be designed as a thread adjustment structure or a slide rail adjustment structure, and the position adjustment of the longitudinal pull rod bracket 19 relative to the vertical support rod 13 can be realized.
Preferably, in the scheme, each longitudinal pull rod 7 is designed to be connected in a multi-section pull rod mode, that is, each longitudinal pull rod 7 comprises a plurality of section pull rods which are sequentially connected and fixed, and the end parts of the section pull rods are provided with flange seats 11 and reinforcing plates 12. The adjacent segmented pull rods are sequentially connected and fixed with each other through the flange seats 11 and the connecting bolts at the end parts, and the reinforcing plates 12 are used for improving the connecting strength of the end parts of the longitudinal pull rods 7. Each segmented tie rod, together with its flange seat 11 and reinforcing plate 12, may be formed by integral welding or by integral casting. The person skilled in the art can design the segmentation pull rod of different quantity according to the concrete length of automobile body 18, of course, the utility model discloses can also design longitudinal tie 7 as a holistic pull rod structure, the retrench is not repeated herein.
Preferably, the end of the servo hydraulic cylinder 4 is provided with a loading head assembly 6 for abutting against the first end wall, a force sensor 5 is arranged between the loading head assembly 6 and the servo hydraulic cylinder 4, and the force sensor 5 is connected to the hydraulic servo loading system 1. The force sensor 5 can feed back the pressure applied by the servo hydraulic cylinder 4 to the hydraulic servo loading system 1 in real time, so that the hydraulic servo loading system 1 realizes closed-loop control, and a force control mode or a displacement control mode can be adopted to load a vehicle and realize monitoring and acquisition of parameters.
The utility model discloses can select the servo pneumatic cylinder 4 and the force sensor 5 of different specifications according to the concrete demand of the quasi-static compression test of automobile body, chooseed for use 50T servo pneumatic cylinder and 500kN force sensor in the scheme of this concrete embodiment.
The stop reaction screw 9 provided on the stop reaction cross beam 8 is used for abutting against the outer side of the second end wall of the vehicle body 18, and when the loading device is installed, the longitudinal pull rod 7 can be tightened through the screw locking nut 10 on the stop reaction screw 9.
Preferably, the number of the longitudinal pull rods 7 is two, the two longitudinal pull rods 7 are arranged on the left side and the right side of the vehicle body 18 in parallel, the number of the servo hydraulic cylinders 4 is two, and the two servo hydraulic cylinders 4 are symmetrically arranged on the left side and the right side of the vehicle body 18 and are connected with the hydraulic servo loading system 1 through the four-channel hydraulic module 2. Two vertical pull rods 7, the loading cross beam 3 and the reaction stopping cross beam 8 jointly form a rectangular closed frame structure, the two servo hydraulic cylinders 4 can apply compression load on the vehicle body 18 in a bilateral symmetry mode, and correspondingly, the reaction stopping cross beam 8 is provided with two reaction stopping lead screws 9, so that the load can be uniformly applied to the vehicle body 18, and the accuracy and precision of a vehicle body quasi-static compression test are improved.
Preferably, the cross beam support bracket 20 is arranged on a screw 21 of the vehicle body strength test bed 17 through the bottom support cross beam 15 and the screw locking seat 16, as shown in fig. 2. The cross member support frame 20 is designed as a frame structure, and functions to support the loading cross member 3 and the reaction stopping cross member 8 at a certain height position so that the loading cross member 3 and the reaction stopping cross member 8 apply a compressive load to the vehicle body. Of course, the utility model discloses can also adopt other fixing device to fix crossbeam support frame 20 on automobile body strength test platform 17, this text is no longer repeated. In addition, one or more cross member support brackets 20 may be provided on each side of the vehicle body 18, and the specific number of cross member support brackets 20 may be selected by those skilled in the art as desired.
The following describes the installation process of the loading device of the present invention in detail.
The bottom supporting beams 15 and the screw locking seats 16 at both ends are bolted to the screws 21 of the vehicle body strength test bed 17. Four cross member support frames 20 are respectively mounted to the upper plane of the bottom support cross member 15, and two cross member support frames are respectively mounted to the outer sides of the front and rear ends of the vehicle body 18. The beam pallet 14 is mounted to the beam support frame 20. The reaction stop screw 9 is attached to the reaction stop beam 8. The 500kN force sensor, load head assembly 6 was mounted to a 50T servo hydraulic cylinder and then mounted integrally to the load beam 3. The loading beam 3 and the reaction stop beam 8 are respectively hoisted to the beam supporting plates 14 of the beam supporting frame 20 at the outer sides of the two end walls of the vehicle body 18. The vertical support rods 13 are uniformly distributed on the left side and the right side of the vehicle body 18 according to the drawing distance requirement, and the lower ends of the vertical support rods 13 are installed in T-shaped grooves in the ground of a vehicle body strength test bed 17 through bolts. And hoisting the assembled longitudinal pull rod 7 to two sides of the vehicle body 18, respectively connecting the assembled longitudinal pull rod with the loading cross beam 3 and the reaction stopping cross beam 8 at the top in a threaded connection or a bolt connection mode, and locking the assembled longitudinal pull rod by using a screw rod locking nut 10 after connecting and adjusting the distance. The fine adjustment device at the top of each vertical support rod 13 is adjusted to enable the longitudinal pull rod bracket 19 to well support the longitudinal pull rod 7, and the contact position does not need to be fixed and is used for releasing the longitudinal displacement of the longitudinal pull rod 7 in the loading process. And the long round holes on the bottom surfaces of the loading cross beam 3 and the reaction stopping cross beam 8 and the long round holes of the cross beam supporting plate 14 are penetrated through by a stud, and clamping nuts are installed but can not be fastened so as to release the longitudinal displacement of the two cross beams in the loading process. And completing pipeline connection and signal line connection of the hydraulic servo loading system 1, the four-channel hydraulic module 2, the 50T servo hydraulic cylinder 4 and the 500kN force sensor 5. After the whole loading device is assembled, all parts are fastened according to the test requirements, and the servo hydraulic cylinder 4 and the reaction stopping lead screw 9 are transversely adjusted to the position of a loading point of the vehicle body.
And starting the hydraulic servo loading system 1, performing simulation preloading of small-force load for several times, and performing formal test procedures after confirming no errors.
The utility model provides a loading device adopts floated closed frame structural design, and simple structure and intensity rigidity are high, the different experimental automobile body of ability adaptation, experimental high efficiency. The main loading structure is designed by adopting a force relative balance principle, so that the structure has very high strength and convenient field assembly conditions, and a huge ground reaction seat structure is not needed. The loading source adopts a hydraulic servo loading principle, two 50T servo hydraulic cylinders are used for realizing synchronous and uniform application of the quasi-static loading load of the vehicle body, the synchronization precision is high, the loading process can be monitored in real time, and the parameters of the loading force, the loading speed, the loading displacement and the like can be accurately controlled. The loading system adopts closed-loop control, and can load the vehicle body in a force control or displacement control mode and realize the monitoring and acquisition of parameters.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. The utility model provides a loading device based on car body quasi-static compression test which characterized in that includes: the device comprises a vehicle body strength test bed (17), a cross beam support frame (20), a cross beam supporting plate (14), a loading cross beam (3), a reaction stopping cross beam (8) and a longitudinal pull rod (7); wherein,
the loading cross beam (3) is arranged on the outer side of a first end wall of a vehicle body (18), the reaction stopping cross beam (8) is arranged on the outer side of a second end wall of the vehicle body (18), the lower part of the loading cross beam (3) and the lower part of the reaction stopping cross beam (8) are respectively connected with a cross beam support frame (20) through a cross beam support plate (14), and the cross beam support frame (20) is arranged above a screw rod of the vehicle body strength test bed (17);
the cross beam supporting plate (14) is provided with a sliding connection structure, and the loading cross beam (3) and the reaction stopping cross beam (8) can slide relative to the cross beam supporting plate (14) along the front and back directions of the vehicle body (18) through the sliding connection structure;
the longitudinal pull rods (7) are arranged symmetrically in the left-right direction of the vehicle body (18), and two ends of each longitudinal pull rod (7) are fixedly connected to the loading cross beam (3) and the reaction stopping cross beam (8) respectively;
the loading cross beam (3) is provided with a servo hydraulic cylinder (4) used for applying pressure to the first end wall, the servo hydraulic cylinder (4) is connected with a hydraulic servo loading system (1), the stop reaction cross beam (8) is provided with a stop reaction lead screw (9) used for supporting the second end wall, and the axis of the servo hydraulic cylinder (4) coincides with the axis of the stop reaction lead screw (9).
2. The loading device of claim 1, wherein the slip connection structure comprises an oblong hole structure and a connection post slidably extending through the oblong hole structure.
3. A loading device according to claim 2, wherein the slotted hole arrangement is provided on the loading beam (3) and the reaction stop beam (8),
and/or
The slotted hole structure is arranged on the beam supporting plate (14).
4. The loading device of claim 2, wherein the attachment post comprises a connector stud and a snap nut attached to an end of the connector stud.
5. The loading device according to claim 1, wherein a plurality of vertical support rods (13) are arranged below each longitudinal pull rod (7), the lower ends of the vertical support rods (13) are connected to the vehicle body strength test bed (17), longitudinal pull rod brackets (19) for supporting the longitudinal pull rods (7) are arranged at the upper ends of the vertical support rods (13), and the longitudinal pull rods (7) can slide relative to the longitudinal pull rod brackets (19) along the axial direction of the longitudinal pull rods (7).
6. The loading device according to claim 5, characterized in that the upper end of the vertical support bar (13) is provided with a fine adjustment structure for adjusting the height of the longitudinal tie bar bracket (19).
7. The loading device according to claim 1, characterized in that each longitudinal tie rod (7) comprises a plurality of sectional tie rods which are sequentially connected and fixed, and the end parts of the sectional tie rods are provided with flange seats (11) and reinforcing plates (12).
8. A loading device according to claim 1, wherein the servo hydraulic cylinder (4) is provided at its distal end with a loading head assembly (6) for abutting against the first end wall, a force sensor (5) being provided between the loading head assembly (6) and the servo hydraulic cylinder (4), the force sensor (5) being connected to the hydraulic servo loading system (1).
9. The loading device according to claim 1, wherein the number of the longitudinal tie rods (7) is two, two longitudinal tie rods (7) are arranged in parallel on the left and right sides of the vehicle body (18), the number of the servo hydraulic cylinders (4) is two, and two servo hydraulic cylinders (4) are arranged symmetrically in the left-right direction of the vehicle body (18).
10. The loading device according to claim 1, wherein the cross beam support frame (20) is arranged on a screw of the vehicle body strength test bed (17) through a bottom support cross beam (15) and a screw locking seat (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820751421.1U CN208636048U (en) | 2018-05-18 | 2018-05-18 | A kind of loading device based on the test of car body quasistatic compression |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820751421.1U CN208636048U (en) | 2018-05-18 | 2018-05-18 | A kind of loading device based on the test of car body quasistatic compression |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208636048U true CN208636048U (en) | 2019-03-22 |
Family
ID=65731982
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820751421.1U Active CN208636048U (en) | 2018-05-18 | 2018-05-18 | A kind of loading device based on the test of car body quasistatic compression |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208636048U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110793791A (en) * | 2019-11-19 | 2020-02-14 | 中车株洲电力机车有限公司 | Driver's cab side collision-resistant test device |
| CN111551375A (en) * | 2020-07-01 | 2020-08-18 | 河北京车轨道交通车辆装备有限公司 | Vehicle body static strength vehicle lifting test system and method |
| CN112665874A (en) * | 2020-12-17 | 2021-04-16 | 中南大学 | Loading device for vehicle quasi-static test, test method and test data correction method |
| CN112945589A (en) * | 2021-01-28 | 2021-06-11 | 中车长春轨道客车股份有限公司 | Test bed counter-force crossbeam lifting positioning device |
| CN112985851A (en) * | 2019-11-29 | 2021-06-18 | 中车长春轨道客车股份有限公司 | Vehicle quasi-static test platform |
| CN113820150A (en) * | 2020-07-03 | 2021-12-21 | 中车唐山机车车辆有限公司 | Quasi-static compression test device for vehicle body end wall anti-collision column |
-
2018
- 2018-05-18 CN CN201820751421.1U patent/CN208636048U/en active Active
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110793791A (en) * | 2019-11-19 | 2020-02-14 | 中车株洲电力机车有限公司 | Driver's cab side collision-resistant test device |
| CN112985851A (en) * | 2019-11-29 | 2021-06-18 | 中车长春轨道客车股份有限公司 | Vehicle quasi-static test platform |
| CN111551375A (en) * | 2020-07-01 | 2020-08-18 | 河北京车轨道交通车辆装备有限公司 | Vehicle body static strength vehicle lifting test system and method |
| CN113820150A (en) * | 2020-07-03 | 2021-12-21 | 中车唐山机车车辆有限公司 | Quasi-static compression test device for vehicle body end wall anti-collision column |
| WO2022000899A1 (en) * | 2020-07-03 | 2022-01-06 | 中车唐山机车车辆有限公司 | Quasi-static compression test device for anti-collision column of vehicle body end wall |
| CN113820150B (en) * | 2020-07-03 | 2022-10-25 | 中车唐山机车车辆有限公司 | Quasi-static compression test device for vehicle body end wall anti-collision column |
| CN112665874A (en) * | 2020-12-17 | 2021-04-16 | 中南大学 | Loading device for vehicle quasi-static test, test method and test data correction method |
| CN112665874B (en) * | 2020-12-17 | 2022-11-29 | 中南大学 | Loading device for vehicle quasi-static test, test method and test data correction method |
| CN112945589A (en) * | 2021-01-28 | 2021-06-11 | 中车长春轨道客车股份有限公司 | Test bed counter-force crossbeam lifting positioning device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN208636048U (en) | A kind of loading device based on the test of car body quasistatic compression | |
| CN102226743B (en) | Rail vehicle vehicle terminal relation integration testing stand | |
| CN105334040A (en) | Research test bed for fatigue strength and load spectra of proportional vehicle body under multi-point excitation load | |
| CN109781550B (en) | Vertical loading test device and method for shear connector | |
| CN111982543B (en) | Loading device for quasi-static compression test of rail vehicle body anti-collision column | |
| CN105067238A (en) | Elastic component large-load fatigue test device, test method and installation method | |
| CN110082131B (en) | Road simulation test bench | |
| CN205209792U (en) | Proportion automobile body fatigue strength and loading spectrum research test platform under multiple spot excitation load | |
| CN202049055U (en) | Vehicle end relationship integrated test table for railway vehicles | |
| CN112129558B (en) | Test bench counter-force crossbeam enclasping lifting device | |
| CN213653063U (en) | Heavy-load adjustable high-precision rail system | |
| CN102944433A (en) | Architecture locating device for bogie parameter test bench | |
| CN107478440A (en) | Bench test height adjustable device | |
| CN202956280U (en) | Positioning device of bogie parameter test board framework | |
| CN113008575A (en) | Test bench and method for simulating bending working condition of engineering vehicle frame | |
| CN103439123A (en) | Device for measuring railway vehicle end relation | |
| CN204740133U (en) | Big load fatigue test device of elastic element | |
| CN202710332U (en) | Loading device of vehicle body strength test end wall | |
| CN209755135U (en) | Crawler tractor frame assembly table | |
| CN217819314U (en) | Three-degree-of-freedom coordinated loading test bed for hinge device | |
| CN203405341U (en) | Apparatus for measuring rail vehicle end relation | |
| CN216926378U (en) | Engine lug test fixture | |
| CN113340711B (en) | Static fatigue load application test device for reinforced wallboard | |
| CN113820150B (en) | Quasi-static compression test device for vehicle body end wall anti-collision column | |
| CN207050994U (en) | A kind of guider of flat board brake test bench |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |