CN214373358U - Frame bench endurance test device of non-bearing type vehicle body - Google Patents

Abstract

The utility model discloses a frame bench endurance test device of a non-bearing type vehicle body, which comprises two groups of test tools arranged at the longitudinal two sides of a frame assembly, wherein each test tool comprises a front suspension simulation module connected at the front end of the frame assembly and a rear suspension simulation module connected at the rear end of the frame assembly; the first loading module is connected with the front suspension simulation module, the connecting position of the first loading module corresponds to the center point of a rear axle of the whole vehicle, the connecting position of the first loading module corresponds to the center point of a front axle of the whole vehicle, and the first loading module can apply vertical upward or downward acting force to the front suspension simulation module; under the working state, the frame assembly is positioned at the theoretical position through the first constraint modules, one first loading module exerts upward acting force on the front suspension simulation module, and the other first loading module exerts downward acting force on the front suspension simulation module. The utility model discloses can simulate the operating condition of frame assembly, experimental precision is high.

Description

Frame bench endurance test device of non-bearing type vehicle body

Technical Field

The utility model relates to a frame endurance test technical field of formula automobile body is born to the non-, concretely relates to frame rack endurance test device of formula automobile body is born to non-.

Background

The frame of the non-bearing type vehicle body is formed by welding or riveting two long longitudinal beams and a plurality of cross beams, and the stress condition of the frame assembly in the running process is very complex, so that the frame assembly not only bears the static load of dead weight and load capacity, but also bears the dynamic load in the motion of the vehicle, and therefore the frame assembly needs to be subjected to an endurance test, and the stability of the frame assembly is ensured.

In the prior art, the durability test of the frame assembly is mainly completed through a vehicle road test, but the vehicle road test period is long, and the test cost is too high, so that a tool for performing the bench durability test on the frame assembly is subsequently developed, the method is simple and easy to implement, but the loading mode is simple, as shown in fig. 1, a front end constraint point A is arranged on the section of a longitudinal beam of the shock absorber, a rear end constraint point B is arranged at two connecting points of a leaf spring and the longitudinal beam, the constraint mode is not consistent with the road test, the failure mode is far away from the road test, and the accurate simulation requirements of part of customers cannot be met.

Therefore, how to provide a bench test device can accurately simulate the actual working condition of the frame assembly, and the actual working condition is matched with the actual road test failure mode as much as possible, so that the test precision is improved, and still, the technical problem to be solved by the technical staff in the field is needed.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a frame rack endurance test device of formula automobile body is born to non-, the actual operating mode of accurate simulation frame assembly coincide as far as with actual way examination failure mode, improves experimental precision.

In order to solve the technical problem, the utility model provides a frame bench endurance test device of non-bearing type vehicle body, which comprises two groups of test tools, wherein the two groups of test tools are correspondingly arranged at the two longitudinal sides of a frame assembly, the test tools comprise a front suspension simulation module and a rear suspension simulation module, the front suspension simulation module is connected at the front end of the frame assembly and is used for simulating a front end suspension, and the rear suspension simulation module is connected at the rear end of the frame assembly and is used for simulating a rear end suspension;

still include first loading module and be used for the location the first restraint module of frame assembly, front overhang analog module the rear overhang analog module first loading module the frame assembly torsional fatigue test frock is constituteed to first restraint module, wherein: the first constraint module is connected with the rear suspension simulation module, the position of a connecting point corresponds to the central point of a rear axle of the whole vehicle, the first loading module is connected with the front suspension simulation module, the position of the connecting point corresponds to the central point of a front axle of the whole vehicle, and the first loading module can apply vertical upward or downward acting force on the front suspension simulation module;

under the working state, the rear end of the frame assembly is positioned at a theoretical position through the first constraint module, one of the two groups of test tools applies a vertical upward acting force to the corresponding front suspension simulation module through the first loading module, and the other first loading module applies a vertical downward acting force to the corresponding front suspension simulation module.

The utility model discloses frame rack endurance test device of formula automobile body is born to non-, when twisting the fatigue test to the frame assembly, simulation real car running state, increase front overhang analog module and rear end analog module simulation front end suspension and rear end suspension, and the rear end is about the point and corresponds the rear axle central point position of whole car, the front axle central point position of whole car is corresponded to the front end loading point, be close the atress condition of actual operation in-process front and back wheel more, further coincide with actual road test failure mode, the test precision is high, satisfy part customer's accurate simulation demand.

Optionally, the front suspension simulation module includes a shock absorber simulation unit, two swing arm simulation units, and a fixing unit, and the swing arm simulation unit is fixedly connected to the swing arm connection portion of the frame assembly and extends in a transverse direction; the shock absorber simulation unit extends along the vertical direction, one end of the shock absorber simulation unit is fixedly connected with the shock absorber connecting portion of the frame assembly, the other end of the shock absorber simulation unit is fixed to the top of the two swing arm simulation units, and the fixing units are fixed to the free ends of the two swing arm simulation units and are used for being connected with the first loading module.

Optionally, the shock absorber simulation unit includes the shock absorber body and is fixed in the fixing support at swing arm simulation unit top, the shock absorber body pass through fixing support with swing arm simulation unit fixed connection, the shock absorber body is close to fixing support's one end with fixing support corresponds and is provided with the first connecting hole of multiunit along vertical direction evenly distributed, the shock absorber body can with any one set or multiunit of fixing support the first connecting hole is connected, in order to adjust the vertical height of shock absorber simulation unit.

Optionally, the fixed support comprises a support body and a first adapter plate arranged at the bottom of the support body, the fixed support is fixedly connected with the swing arm simulation unit through the first adapter plate, and the support body can move in the horizontal direction relative to the first adapter plate and is fixed at a preset position of the first adapter plate.

Optionally, the fixing unit includes a base and a second adapter plate, the base is fixedly connected to the swing arm simulation unit through the second adapter plate, and the base can move in a horizontal direction relative to the second adapter plate and is fixed at a predetermined position of the second adapter plate.

Optionally, the base further includes a first connecting shaft extending in the transverse direction, and the base is hinged to the first loading module through the first connecting shaft, so that a connecting portion of the first loading module and the first connecting shaft can rotate around the axial direction of the first connecting shaft.

Optionally, the first loading module includes a driving unit and a first ball bearing, the first ball bearing is connected to the first connecting shaft, one end of the first ball bearing is connected to the driving unit, and the other end of the first ball bearing is sleeved on the first connecting shaft and can rotate around the first connecting shaft in the axial direction.

Optionally, the first loading module further comprises a first force sensor for detecting the magnitude of the acting force applied by the driving unit.

Optionally, the rear overhang simulation module includes a leaf spring simulation unit and a supporting unit, the leaf spring simulation unit extends in a longitudinal direction, two ends of the leaf spring simulation unit are respectively connected with the longitudinal beam on the same side of the frame assembly, and the supporting unit is disposed at the bottom of the leaf spring simulation unit and is used for being connected with the first constraint module.

Optionally, the plate spring simulation unit comprises a plate spring body and a plate spring connecting portion connected to the rear end of the plate spring body, the plate spring body is connected to the longitudinal beam through the plate spring connecting portion, the rear end of the side wall of the plate spring body is provided with a plurality of groups of second connecting holes distributed uniformly in the longitudinal direction in a corresponding mode, and the plate spring connecting portion can be connected to any one or more groups of second connecting holes of the plate spring body to adjust the longitudinal length of the plate spring simulation unit.

Alternatively, the supporting unit may be detachably disposed at a bottom of the plate spring simulation unit, and the supporting unit may be capable of moving in a longitudinal direction with respect to the plate spring simulation unit and fixed at a predetermined position of the plate spring simulation unit.

Optionally, the leaf spring simulation unit further comprises two mounting bearings, third connecting holes extending in the transverse direction are formed in two ends of the leaf spring simulation unit, the two mounting bearings are correspondingly inserted into the two third connecting holes so as to hinge the leaf spring simulation unit to the longitudinal beam, and the leaf spring simulation unit can rotate around the axial direction of the mounting bearings.

Optionally, the test fixture further includes a second constraint module and a second loading module, the front suspension simulation module, the rear suspension simulation module, the first constraint module, the second constraint module and the second loading module form a frame assembly bending fatigue test fixture, wherein: the second constraint module is connected with the front suspension simulation module, the position of a connecting point corresponds to the center point of the front axle of the whole vehicle, the second loading module is fixedly connected with the middle part of the frame assembly, the position of a fixed point corresponds to the center of gravity of the whole vehicle, and the second loading module can apply vertical upward or downward acting force to the frame assembly;

in a working state, the frame assembly is positioned at a theoretical position through the first constraint module and the second constraint module, and the second loading module applies upward or downward acting force to the frame assembly.

Optionally, the second loading module includes a fixing portion and a loading portion, the fixing portion is used for being fixedly connected to a longitudinal beam on the same side of the frame assembly, and the loading portion is used for applying an upward or downward acting force to the longitudinal beam.

Optionally, the fixing portion includes two first fixing portions extending in a vertical direction, fourth connecting holes are respectively formed in upper and lower ends of the first fixing portion, and the fixing portion further includes two connecting bolts and fixing nuts, the two connecting bolts are respectively inserted into the fourth connecting holes corresponding to the two first fixing portions, and the two first fixing portions are fixedly connected through the fixing nuts.

Optionally, the second loading module further includes a second ball bearing, the fixing portion is close to one end of the loading portion and is further provided with a second connecting shaft extending in the transverse direction, one end of the second ball bearing is fixedly connected with the loading portion, and the other end of the second ball bearing is sleeved on the second connecting shaft and can rotate around the axial direction of the second connecting shaft.

Optionally, the second loading module further comprises a second force sensor for detecting the magnitude of the acting force applied by the loading part.

Optionally, the second constraint module comprises a hoisting part and a third ball bearing which are sequentially connected from top to bottom, the third ball bearing is sleeved on the first connecting shaft and can rotate around the axial direction of the first connecting shaft, and the front suspension simulation module is hoisted to the theoretical position through the hoisting part.

Drawings

FIG. 1 is a simplified schematic diagram of a prior art frame assembly test fixture;

FIG. 2 is a schematic structural diagram of a frame stand endurance test apparatus for a non-load-bearing vehicle body according to an embodiment of the present invention, when performing a torsional fatigue test on a frame assembly;

fig. 3 is a schematic structural diagram of a frame bench endurance test device of a non-load-bearing vehicle body when performing a bending fatigue test on a frame assembly according to the present invention;

FIG. 4 is a schematic structural diagram of a front suspension simulation module in the frame stand endurance testing apparatus of the non-self-supporting vehicle body shown in FIGS. 2 and 3;

FIG. 5 is a schematic structural diagram of a first loading module in the frame stand endurance testing apparatus of the non-self-supporting vehicle body of FIG. 2;

FIG. 6 is a schematic structural diagram of a rear suspension simulation module in the frame stand endurance testing apparatus of the non-self-supporting vehicle body shown in FIGS. 2 and 3;

FIG. 7 is a schematic structural diagram of a second loading module in the frame stand endurance testing apparatus of the non-self-supporting vehicle body of FIG. 3;

FIG. 8 is a schematic structural view of a second restraint module in the frame stand endurance testing apparatus of the non-self-supporting vehicle body of FIG. 3;

wherein the reference numerals in fig. 1 to 8 are explained as follows:

1-a front overhang simulation module; 11-a shock absorber simulation unit; 111-a damper body; 112-a fixed support; 112 a-a holder body; 112 b-a first transfer plate; 12-a swing arm simulation unit; 13-a stationary unit; 131-a base; 131 a-first connecting shaft; 132-a second interposer;

2-a rear overhang simulation module; 21-a leaf spring simulation unit; 211-a leaf spring body; 212-leaf spring connection; 22-a support unit; 23-mounting a bearing;

3-a first load module; 31-a first ball bearing; 32-a first cylinder; 33-a first connection block; 34-a first connection stud; 35-a mounting seat;

4-a first constraint module; 41-a support bar;

5-a second constraint module; 51-a sling portion; 52-third ball bearing; 53-hoisting seat; 54-a force sensor;

6-a second load module; 61-a fixed part; 611-a first fixed part; 612-connecting bolts; 613-fixing the nut; 614-second connecting shaft; 62-a second ball bearing; 63-a second cylinder; 64-a second connection block; 65-a second connecting stud; 66-a fixed seat;

01-a frame assembly; 011-swing arm connecting part; 012-damper connection.

Detailed Description

In order to make those skilled in the art better understand the technical solution of the present invention, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments.

The terms "first," "second," and the like, herein are used for convenience in describing two or more structures or components that are identical or similar in structure and/or function and do not denote any particular limitation in order and/or importance.

Herein, the longitudinal direction along the length direction of the frame assembly 01 is the "rear end" at the end connected to the rear end suspension and the "front end" at the end connected to the front end suspension; the swing arm simulation unit 12 is a free end, which is the end of the swing arm simulation unit 12 away from the frame assembly 01, and is transverse to the width direction of the frame assembly 01.

Referring to fig. 2, fig. 2 is a schematic structural diagram of a frame bench endurance test apparatus for a non-load-bearing vehicle body according to an embodiment of the present invention, when performing a torsional fatigue test on a frame assembly.

The utility model provides a frame rack endurance test device of non-bearing type automobile body, which comprises two groups of test tools, wherein the two groups of test tools are correspondingly arranged at the longitudinal two sides of a frame assembly 01, each test tool comprises a front suspension simulation module 1 and a rear suspension simulation module 2, the front suspension simulation module 1 is connected at the front end of the frame assembly 01 and is used for simulating a front end suspension, and the rear suspension simulation module 2 is connected at the rear end of the frame assembly 01 and is used for simulating a rear end suspension;

still include first loading module 3 and be used for fixing a position frame assembly 01's first restraint module 4, the frame assembly torsional fatigue test frock is constituteed to front overhang analog module 1, rear overhang analog module 2, first loading module 3, first restraint module 4, wherein: the first constraint module 4 is connected with the rear suspension simulation module 2, the position of a connecting point corresponds to the central point of a rear axle of the whole vehicle, the first loading module 3 is connected with the front suspension simulation module 1, the position of the connecting point corresponds to the central point of a front axle of the whole vehicle, and the first loading module 3 can apply vertical upward or downward acting force on the front suspension simulation module 1;

under the working state, the rear end of the frame assembly 01 is positioned at a theoretical position through the first constraint module 4, one first loading module 3 in the two groups of test tools applies a vertical upward acting force to the corresponding front suspension simulation module 1, and the other first loading module 3 applies a vertical downward acting force to the corresponding front suspension simulation module 1 so as to perform a torsional fatigue test on the frame assembly 01.

The utility model discloses frame rack endurance test device of formula automobile body is born to non-, when twisting the fatigue test to frame assembly 01, simulation real car running state, increase front overhang analog module 1 and rear overhang analog module 2 simulation front end suspension and rear end suspension, and the rear end is about the point and corresponds the rear axle central point position of whole car, the front axle central point position of whole car is corresponded to the front end loading point, be close the atress condition of actual operation in-process front and back wheel more, further coincide with actual road test failure mode, the test precision is high, satisfy part customer's accurate simulation demand.

Specifically, referring to fig. 4, fig. 4 is a schematic structural diagram of a front suspension simulation module in the frame stand endurance test apparatus of the non-self-supporting vehicle body shown in fig. 2 and 3.

In this embodiment, the front suspension simulation module 1 includes a shock absorber simulation unit 11, two swing arm simulation units 12, and a fixing unit 13, one end of the swing arm simulation unit 12 is fixedly connected with a swing arm connecting portion 011 of the frame assembly 01, and extends along a horizontal direction, the shock absorber simulation unit 11 extends along a vertical direction, and one end of the shock absorber simulation unit is fixedly connected with a shock absorber connecting portion 012 of the frame assembly 01, the other end of the shock absorber simulation unit is fixed at the tops of the two swing arm simulation units 12, and the fixing unit 13 is fixed at the free ends of the two swing arm simulation units 12 and is used for being connected with the first loading module 3.

In the front suspension simulation module 1 of the present embodiment, the shock absorber installation form of the real vehicle is simulated by the shock absorber simulation unit 11; the swing arm simulation unit 12 simulates a double-fork arm swing arm structure to achieve the effect similar to the installation of a swing arm of a real vehicle; meanwhile, the fixing unit 13 is connected with the first loading module 3, so that the position of the connecting point can correspond to the central point of the front axle of the whole vehicle, and the running state of the whole vehicle is further approached.

Wherein, bumper shock absorber analog unit 11 includes bumper shock absorber body 111 and is fixed in the fixing support 112 at swing arm analog unit 12 top, bumper shock absorber body 111 passes through fixing support 112 and swing arm analog unit 12 fixed connection, bumper shock absorber body 111 is close to fixing support 112's one end and the first connecting hole that fixing support 112 correspondence was provided with the multiunit along vertical direction evenly distributed, bumper shock absorber body 111 can be connected with fixing support 112's arbitrary one set or the first connecting hole of multiunit to adjust bumper shock absorber analog unit 11's vertical height.

This setting for the bumper shock absorber installation state of different length can be simulated to the bumper shock absorber analog unit 11 of this embodiment, satisfies different test condition, mounting dimension's frame assembly 01's installation demand, and the practicality is stronger.

Specifically, in the present embodiment, the number of each group of first connection holes including the connection holes is two, so as to ensure the connection stability of the damper body 111 and the fixing support 112.

Further, the fixed support 112 includes a support body 112a and a first adapter plate 112b disposed at the bottom of the support body 112a, the fixed support 112 is fixedly connected with the swing arm simulation unit 12 through the first adapter plate 112b, and the support body 112a can move in the horizontal direction relative to the first adapter plate 112b and is fixed at a predetermined position of the first adapter plate 112 b.

This setting can be adjusted the position of bumper shock absorber analog unit 11 in the horizontal direction to more accurately be close to real car state, improve experimental precision.

Further, the fixing unit 13 includes a base 131 and a second adapter plate 132, the base 131 is fixedly connected to the swing arm simulation unit 12 through the second adapter plate 132, and the base 131 can move in the horizontal direction relative to the second adapter plate 132 and is fixed at a predetermined position of the second adapter plate 132.

According to the device, when the size of the frame assembly 01 changes, the position of the front axle center simulation mounting point can be adaptively adjusted, the problem of assembly endurance test of the frame assemblies 01 of various types is solved, and the applicability and the test precision of the frame bench endurance test device of the non-self-supporting type vehicle body are improved.

With reference to fig. 4, the base 131 further includes a first connecting shaft 131a extending along the transverse direction, and the base 131 is hinged to the first loading module 3 through the first connecting shaft 131a, so that the connecting portion of the first loading module 3 and the first connecting shaft 131a can rotate around the axial direction of the first connecting shaft 131 a.

This setting for front overhang simulation module 1 has certain degree of freedom among the test process, can follow longitudinal movement predetermined distance promptly, slows down and leads to the structure to receive the transverse force because of the loading load, guarantees that front overhang simulation module 1 and frame assembly 01 do not produce abnormal stress, and then guarantees the stability of rack.

Referring to fig. 5, fig. 5 is a schematic structural diagram of a first loading module in the frame stand endurance testing apparatus of the non-self-supporting vehicle body of fig. 2;

in this embodiment, the first loading module 3 includes a driving unit and a first ball bearing 31, the first ball bearing 31 is the aforementioned connecting portion connected to the first connecting shaft 131a, one end of the first ball bearing 31 is connected to the driving unit, and the other end of the first ball bearing 31 is sleeved on the first connecting shaft 131a and can rotate relatively around the axial direction of the first connecting shaft 131 a.

Specifically, the driving unit is a first actuating cylinder 32, and further comprises a mounting base 35 for fixing the first actuating cylinder 32 and extending in the vertical direction, a first connecting block 33 fixedly connected with the first actuating cylinder 32, and a first connecting stud 34, wherein the first connecting block 33 is fixedly connected with the first actuating cylinder 32 through a connecting bolt, and the first ball bearing 31 is fixedly connected with the first connecting block 33 through the first connecting stud 34, so that the structural installation of the loading end of the driving unit is completed; meanwhile, in the test process, the frame assembly 01 and the front suspension simulation module 1 can generate certain deformation according to different loads, and in order to ensure the stability of the frame, the first connecting shaft 131a on the front suspension loading module 1 is matched with the first ball bearing 31, so that the front suspension simulation module 1 has certain degree of freedom in the test process, and the front suspension simulation module 1 and the frame assembly 01 are ensured not to generate abnormal stress.

In addition, the first loading module 3 further comprises a first force sensor for monitoring the magnitude of the acting force applied by the first cylinder 32 in real time and giving a corresponding alarm when the force value is abnormal, thereby suspending the test to check for failure problems.

Referring to fig. 6, fig. 6 is a schematic structural diagram of a rear suspension simulation module in the frame stand endurance test apparatus of the non-self-supporting vehicle body shown in fig. 2 and 3.

In this embodiment, the rear overhang simulation module 2 includes a plate spring simulation unit 21 and a supporting unit 22, the plate spring simulation unit 21 extends along a longitudinal direction, two ends of the plate spring simulation unit 21 are respectively connected with the side rail on the same side of the frame assembly 01, and the supporting unit 22 is disposed at the bottom of the plate spring simulation unit 21 and is used for being connected with the first constraint module 4.

In the rear overhang simulation module 2 of the embodiment, a plate spring simulation unit 21 matched with the size of a real vehicle plate spring is installed on a frame assembly 01 sample to simulate the plate spring, so that the effect similar to the installation of the real vehicle plate spring is achieved; meanwhile, the supporting unit 22 is connected with the first restraint module 4, so that the position of the connecting point can correspond to the central point of the rear axle of the whole vehicle, and the running state of the whole vehicle is further approached.

Specifically, the plate spring simulation unit 21 includes a plate spring body 211 and a plate spring connecting portion 212 connected to a rear end of the plate spring body 211, the plate spring body 211 is connected to the longitudinal beam through the plate spring connecting portion 212, a rear end side wall of the plate spring body 211 and the plate spring connecting portion 212 are provided with a plurality of sets of second connecting holes uniformly distributed in the longitudinal direction, and the plate spring connecting portion 212 can be connected to any one or more sets of second connecting holes of the plate spring body 211 to adjust the longitudinal length of the plate spring simulation unit 21.

This setting for the leaf spring of different length can be simulated to the leaf spring analog cell 21 of this embodiment, so that adjust according to different motorcycle type frame assembly 01's size, satisfy different test condition, mounting dimension's frame assembly 01's installation demand, the practicality is stronger.

In this embodiment, the second connection hole extends along the transverse direction, and in practical application, the second connection hole may also extend along the vertical direction.

Further, the support unit 22 is detachably provided to the bottom of the plate spring simulation unit 21, and the support unit 22 is capable of moving in the longitudinal direction with respect to the plate spring simulation unit 21 and is fixed to a predetermined position of the plate spring simulation unit 21.

According to the device, when the size of the frame assembly 01 changes, the position of the central simulation mounting point of the rear axle can be adaptively adjusted, the problem of assembly endurance test of the frame assemblies 01 of various types is solved, and the practicability and the test precision of the frame bench endurance test device of the non-bearing type vehicle body are improved.

In addition, this embodiment rear overhang simulation module 2 still includes two installation bearings 23, and leaf spring simulation unit 21 both ends all are provided with along the third connecting hole of horizontal extension, and two installation bearings 23 correspond the cartridge in two third connecting holes to articulate leaf spring simulation unit 21 in the corresponding longeron of frame assembly 01, leaf spring simulation unit 21 can rotate around installation bearing 23's axial.

This setting can be so that among the test process rear overhang analog module 2 has certain degree of freedom, guarantees that rear overhang analog module 2 does not produce abnormal stress with frame assembly 01, guarantees the stability of rack.

Referring to fig. 6, in the present embodiment, the first constraint module 4 includes a support rod 41 supported at the bottom of the support unit 22, and the support rod 41 is fixedly connected to the support unit 22 by a fixing bolt, and the position of the fixing point is ensured to correspond to the central point of the rear axle of the entire vehicle.

Referring to fig. 3, fig. 3 is a schematic structural diagram of a frame stand endurance test apparatus for a non-load-bearing vehicle body according to the present invention when performing a bending fatigue test on a frame assembly.

The utility model discloses among the frame rack endurance test device of formula automobile body is born to the non-, experimental frock still includes second restraint module 5 and second loading module 6, and preceding overhang analog module 1, back overhang analog module 2, first restraint module 4, second restraint module 5 and second loading module 6 constitute frame assembly bending fatigue test frock, wherein: the second constraint module 5 is connected with the front suspension simulation module 1, the position of a connecting point corresponds to the central point of a front axle of the whole vehicle, the second loading module 6 is fixedly connected with the middle part of the frame assembly 01, the position of a fixed point corresponds to the center of gravity of the whole vehicle, and the second loading module 6 can apply vertical upward or downward acting force to the frame assembly 01;

under the working state, the frame assembly 01 is positioned at a theoretical position through the first constraint module 4 and the second constraint module 5, and the second loading module 6 applies upward or downward acting force to the frame assembly 01 so as to perform a bending fatigue test on the frame assembly 01.

The utility model discloses frame rack endurance test device of formula automobile body is born to non-, when carrying out bending fatigue test to frame assembly 01, simulation real car running state, increase front overhang analog module 1 and rear end analog module 2 simulation front end suspension and rear end suspension, be located theoretical position with frame assembly 01 through first restraint module 4 and second restraint module 5, and the front and back axle central point position of corresponding whole car of front and back restraint point, the atress condition of wheel around being close more, exert the effort at whole car focus position through second loading module 6, further coincide with actual road test failure mode, the test precision is high, satisfy part customer's accurate simulation demand.

Referring to fig. 7, fig. 7 is a schematic structural diagram of a second loading module in the frame stand endurance testing apparatus of the non-self-supporting vehicle body of fig. 2.

In this embodiment, the second loading module 6 includes a fixing portion 61 and a loading portion, which are connected to each other, the fixing portion 61 is used for being fixedly connected to the side member on the same side of the frame assembly 01, and the loading portion is used for applying an upward or downward acting force to the side member.

Specifically, the fixing portion 61 includes two first fixing portions 611 extending along the vertical direction, the upper and lower ends of the first fixing portion 611 are respectively provided with a fourth connecting hole, and further includes two connecting bolts 612 and a fixing nut 613, the two connecting bolts 612 are respectively inserted into the fourth connecting holes corresponding to the two first fixing portions 611, and the two first fixing portions 611 are fixedly connected through the fixing nut 613, and the longitudinal beam is fixed between the first fixing portions 611 and the connecting bolts 612.

The fixing portion 61 of the present embodiment adjusts the distance between the two first fixing portions 611 by adjusting the fixing bolt 613, so as to be fixedly connected to the side member more stably. Of course, in practical applications, the structure of the fixing portion 61 is not limited to the above-described form, and may be any structure as long as the fixing connection with the side member can be achieved.

Further, the second loading module 6 further includes a second ball bearing 62, the fixing portion 61 is further provided with a second connecting shaft 614 extending in the transverse direction at one end close to the loading portion, one end of the second ball bearing 62 is fixedly connected with the loading portion, and the other end of the second ball bearing is sleeved on the second connecting shaft 614 and can relatively rotate around the axial direction of the second connecting shaft 614.

The arrangement is also for the purpose that the loading part has a certain degree of freedom relative to the fixing part 61 in the test process, so that the transverse force applied to the structure due to the deformation of the longitudinal beam caused by loading is relieved, and the frame assembly 01 is ensured not to generate abnormal stress.

In addition, in the second loading module 6 of this embodiment, the loading portion is a second actuating cylinder 63, and further includes a fixing base 66 extending in the vertical direction for fixing the second actuating cylinder 63, a second connecting block 64 fixedly connected to the second actuating cylinder 63, and a second connecting stud 65, the second connecting block 64 is fixedly connected to the second actuating cylinder 63 through a connecting bolt, and the second ball bearing 62 is fixedly connected to the second connecting block 64 through the second connecting stud 65, so as to complete the structural installation of the loading end.

In addition, the second loading module 6 further comprises a second force sensor for monitoring the magnitude of the acting force applied by the second actuating cylinder 63 in real time, and giving a corresponding alarm when the force value is abnormal, so as to suspend the test to check the fault problem.

Referring to fig. 8, fig. 8 is a schematic structural diagram of a second restraint module in the frame stand endurance testing apparatus of the non-self-supporting vehicle body of fig. 3.

In this embodiment, the second constraint module 5 includes, from top to bottom, a hoisting portion 51 and a third ball bearing 52 connected in sequence, the third ball bearing 52 is sleeved on the first connecting shaft 131a and can relatively rotate around the axial direction of the first connecting shaft 131a, and the front suspension simulation module 1 is hoisted to a theoretical position through the second constraint module 5.

In this embodiment, the second constraint module 5 is disposed above the front suspension simulation module 1, and further includes a hoisting seat 53, the hoisting part 51 is rod-shaped, the other end of the hoisting part 51 is fixed to the hoisting seat 53, and the front suspension simulation module 1 is positioned by a hoisting manner. In practical application, the second constraint module 5 may also be disposed below the front suspension simulation module 1, the fixing unit 13 of the front suspension simulation module 1 is disposed at the bottom of the free end of the swing arm simulation unit 12, and the second constraint module 5 positions the front suspension simulation module 1 in a supporting manner.

In this embodiment, the first constraint module 4 is fixedly connected with the rear suspension simulation module 2, and the second constraint module 5 suspends the front suspension simulation module 1, so that the front suspension simulation module 1 has a certain degree of freedom along the longitudinal direction; in practical application, the second constraint module 5 and the front suspension simulation module 1 can be fixedly connected, and the first constraint module 4 is hinged to the rear suspension simulation module 2 and supported at the bottom of the rear suspension simulation module 2 in a supporting or hoisting mode.

In addition, the second restraint module 5 further comprises a third force sensor 54 for monitoring the magnitude of the applied force of the second actuating cylinder 63 in real time and issuing a corresponding alarm when the force value is abnormal, thereby suspending the test to check for failure problems.

Since the second loading module 6 is already provided with the second force sensor, the magnitude of the acting force applied by the second actuating cylinder 63 is monitored in real time; therefore, the second restraint module 5 may not be provided with the third force sensor 54. Of course, the second restraint module 5 is provided with the third force sensor 54, which can provide double monitoring, so as to avoid that the magnitude of the acting force applied by the second actuating cylinder 63 cannot be determined in time when the second force sensor fails.

It is right above the utility model provides a frame rack endurance test device of formula automobile body is born to non-has carried out detailed introduction, and it is right to have used specific individual example herein the utility model discloses a principle and implementation mode have been elucidated, and the description of above embodiment is only used for helping understanding the utility model discloses a method and core thought thereof. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.

Claims (18)

1. The frame bench endurance test device of the non-bearing type vehicle body is characterized by comprising two groups of test tools, wherein the two groups of test tools are correspondingly arranged on two longitudinal sides of a frame assembly (01), each test tool comprises a front suspension simulation module (1) and a rear suspension simulation module (2), the front suspension simulation module (1) is connected to the front end of the frame assembly (01) and used for simulating a front end suspension, and the rear suspension simulation module (2) is connected to the rear end of the frame assembly (01) and used for simulating a rear end suspension;

still include first loading module (3) and be used for fixing a position frame assembly (01) first restraint module (4), front overhang analog module (1), rear overhang analog module (2), first loading module (3), frame assembly torsion fatigue test frock is constituteed to first restraint module (4), wherein: the first constraint module (4) is connected with the rear suspension simulation module (2), the position of a connection point corresponds to the central point of a rear axle of the whole vehicle, the first loading module (3) is connected with the front suspension simulation module (1), the position of the connection point corresponds to the central point of a front axle of the whole vehicle, and the first loading module (3) can apply vertical upward or downward acting force on the front suspension simulation module (1);

under the working state, the rear end of the frame assembly (01) is positioned at a theoretical position through the first constraint module (4), one of the two groups of test tools is used for applying a vertical upward acting force to the front suspension simulation module (1) correspondingly through the first loading module (3), and the other loading module is used for applying a vertical downward acting force to the front suspension simulation module (1) correspondingly through the first loading module (3).

2. The frame bench endurance testing apparatus of a non-self-supporting vehicle body according to claim 1, wherein the front suspension simulating module (1) includes a shock absorber simulating unit (11), two swing arm simulating units (12), and a fixing unit (13), the swing arm simulating units (12) are fixedly connected with a swing arm connecting portion (011) of the frame assembly (01) and extend in a lateral direction; the shock absorber simulation unit (11) extends along the vertical direction, one end of the shock absorber simulation unit is fixedly connected with a shock absorber connecting portion (012) of the frame assembly (01), the other end of the shock absorber simulation unit is fixed at the top of the swing arm simulation unit (12), and the fixing unit (13) is fixed at the free end of the swing arm simulation unit (12) and is used for being connected with the first loading module (3).

3. The frame bench endurance test device of the non-self-supporting vehicle body according to claim 2, wherein the shock absorber simulation unit (11) comprises a shock absorber body (111) and a fixing support (112) fixed on the top of the swing arm simulation unit (12), the shock absorber body (111) is fixedly connected with the swing arm simulation unit (12) through the fixing support (112), one end of the shock absorber body (111) close to the fixing support (112) and the fixing support (112) are correspondingly provided with multiple sets of first connecting holes uniformly distributed in the vertical direction, and the shock absorber body (111) can be connected with any one or multiple sets of the first connecting holes of the fixing support (112) to adjust the vertical height of the shock absorber simulation unit (11).

4. The frame stand endurance testing apparatus of a non-self-supporting vehicle body according to claim 3, wherein the fixing bracket (112) includes a bracket body (112a) and a first adapter plate (112b) provided at a bottom of the bracket body (112a), the fixing bracket (112) is fixedly connected to the swing arm simulation unit (12) through the first adapter plate (112b), and the bracket body (112a) is movable in a horizontal direction with respect to the first adapter plate (112b) and fixed to a predetermined position of the first adapter plate (112 b).

5. The frame bench endurance test apparatus for a non-self-supporting vehicle body according to claim 2, wherein the fixing unit (13) comprises a base (131) and a second adaptor plate (132), the base (131) is fixedly connected to the swing arm simulation unit (12) through the second adaptor plate (132), and the base (131) is capable of moving in a horizontal direction with respect to the second adaptor plate (132) and is fixed at a predetermined position of the second adaptor plate (132).

6. The frame stand endurance testing apparatus of a non-self-supporting vehicle body according to claim 5, wherein the base (131) further includes a first connecting shaft (131a) extending in a lateral direction, and the base (131) is hinged to the first loading module (3) through the first connecting shaft (131a) so that a connection portion of the first loading module (3) to the first connecting shaft (131a) can rotate about an axial direction of the first connecting shaft (131 a).

7. The frame stand endurance testing apparatus of a non-self-supporting vehicle body according to claim 6, wherein the first loading module (3) includes a driving unit and a first ball bearing (31), the first ball bearing (31) is the connecting portion connected to the first connecting shaft (131a), one end of the first ball bearing (31) is connected to the driving unit, and the other end thereof is fitted over the first connecting shaft (131a) and is relatively rotatable around an axial direction of the first connecting shaft (131 a).

8. The frame stand endurance testing apparatus of a non-self-supporting vehicle body according to claim 7, wherein the first loading module (3) further includes a first force sensor for detecting a magnitude of the acting force applied by the driving unit.

9. The frame stand endurance testing apparatus of a non-self-supporting vehicle body according to any one of claims 1 to 8, wherein the rear suspension simulating module (2) includes a plate spring simulating unit (21) and a supporting unit (22), the plate spring simulating unit (21) extends in a longitudinal direction, both ends of the plate spring simulating unit (21) are respectively connected to the same-side longitudinal beams of the frame assembly (01), and the supporting unit (22) is disposed at a bottom of the plate spring simulating unit (21) for being connected to the first restraint module (4).

10. The frame stand endurance testing apparatus of a non-self-supporting vehicle body according to claim 9, wherein the plate spring simulation unit (21) includes a plate spring body (211) and a plate spring connection portion (212) connected to a rear end of the plate spring body (211), the plate spring body (211) is connected to the side member through the plate spring connection portion (212), a plurality of sets of second connection holes uniformly distributed in a longitudinal direction are provided at a rear end of a side wall of the plate spring body (211) corresponding to the plate spring connection portion (212), and the plate spring connection portion (212) is connectable to any one or more sets of the second connection holes of the plate spring body (211) to adjust a longitudinal length of the plate spring simulation unit (21).

11. The frame stand endurance testing apparatus of a non-self-supporting vehicle body according to claim 9, wherein the support unit (22) is detachably provided to a bottom portion of the leaf spring simulation unit (21), and the support unit (22) is movable in a longitudinal direction with respect to the leaf spring simulation unit (21) and fixed to a predetermined position of the leaf spring simulation unit (21).

12. The frame bench durability test device of the non-self-supporting vehicle body according to claim 9, further comprising two mounting bearings (23), wherein both ends of the plate spring simulation unit (21) are provided with third connecting holes extending along the transverse direction, the two mounting bearings (23) are correspondingly inserted into the two third connecting holes so as to hinge the plate spring simulation unit (21) to the longitudinal beam, and the plate spring simulation unit (21) can rotate around the axial direction of the mounting bearings (23).

13. The frame bench endurance testing apparatus of the non-self-supporting vehicle body according to any one of claims 6 to 8, further comprising a second constraint module (5) and a second loading module (6), wherein the front suspension simulation module (1), the rear suspension simulation module (2), the first constraint module (4), the second constraint module (5) and the second loading module (6) constitute a frame assembly bending fatigue testing apparatus, wherein: the second constraint module (5) is connected with the front suspension simulation module (1), the position of a connection point corresponds to the center point of the front axle of the whole vehicle, the second loading module (6) is fixedly connected with the middle part of the frame assembly (01), the position of a fixed point corresponds to the gravity center of the whole vehicle, and the second loading module (6) can apply vertical upward or downward acting force to the frame assembly (01);

in the working state, the frame assembly (01) is positioned at a theoretical position through the first constraint module (4) and the second constraint module (5), and the second loading module (6) applies upward or downward acting force to the frame assembly (01).

14. The frame stand endurance testing apparatus of a non-self-supporting vehicle body according to claim 13, wherein the second loading module (6) comprises a fixing portion (61) and a loading portion connected to each other, the fixing portion (61) is configured to be fixedly connected to a side member on the same side of the frame assembly (01), and the loading portion is configured to apply an upward or downward force to the side member.

15. The frame rack endurance test apparatus for a non-self-supporting vehicle body according to claim 14, wherein the fixing portion (61) comprises two first fixing portions (611) extending in a vertical direction, fourth connecting holes are respectively formed at upper and lower ends of the first fixing portion (611), and further comprises two connecting bolts (612) and a fixing nut (613), the two connecting bolts (612) are respectively inserted into the fourth connecting holes corresponding to the two first fixing portions (611), and the two first fixing portions (611) are fixedly connected by the fixing nut (613).

16. The frame stand endurance testing apparatus of a non-self-supporting vehicle body according to claim 14, wherein the second loading module (6) further includes a second ball bearing (62), the fixing portion (61) is further provided with a second connecting shaft (614) extending in a transverse direction at an end near the loading portion, one end of the second ball bearing (62) is fixedly connected with the loading portion, and the other end thereof is fitted over the second connecting shaft (614) and is rotatable around an axial direction of the second connecting shaft (614).

17. The frame stand endurance testing apparatus of a non-self-supporting vehicle body according to claim 14, wherein the second loading module (6) further comprises a second force sensor for detecting the magnitude of the force applied by the loading portion.

18. The frame bench endurance test device of non-self-supporting vehicle body according to claim 13, wherein the second restraint module (5) comprises a sling portion (51) and a third ball bearing (52) connected in sequence from top to bottom, the third ball bearing (52) is sleeved on the first connecting shaft (131a) and can relatively rotate around the axial direction of the first connecting shaft (131a), and the front suspension simulation module (1) is hoisted to a theoretical position through the sling portion (51).

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