CN215065880U - Towing hook assembly fatigue test device - Google Patents
Towing hook assembly fatigue test device Download PDFInfo
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- CN215065880U CN215065880U CN202120563859.9U CN202120563859U CN215065880U CN 215065880 U CN215065880 U CN 215065880U CN 202120563859 U CN202120563859 U CN 202120563859U CN 215065880 U CN215065880 U CN 215065880U
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Abstract
The application relates to a towing hook assembly fatigue test device. The device comprises a fixedly arranged towing hook assembly and an actuator system connected with the towing hook assembly; the actuator system is connected with the towing hook assembly through a connecting device, and applies vibration loads in different directions to the towing hook assembly through the connecting device. The scheme that this application provided can simulate in the scene of difference and carry out endurance fatigue verification to the tow hook subassembly, has promoted tow hook subassembly fatigue test's comprehensiveness and accuracy.
Description
Technical Field
The application relates to the technical field of vehicles, in particular to a towing hook assembly fatigue test device.
Background
Tractors are typically equipped with a tow hook assembly by which they are coupled to a trailer for towing the trailer for travel.
In the related technology, in the early design and development stage of the tractor, a fatigue test is generally required to be carried out on the towing hook assembly, the structure of the towing hook assembly is optimized in time, and the structural failure of the towing hook assembly in the design life cycle of the whole tractor is avoided. And the towing hook assembly fatigue test device in the related art has a simple structure, and the fatigue test is difficult to completely cover the use scene of a user.
SUMMERY OF THE UTILITY MODEL
For solving or partly solving the problem that exists among the correlation technique, the application provides a towing pintle subassembly fatigue test device, and the device can simulate and carry out endurance fatigue in the scene of difference to the towing pintle subassembly and verify, has promoted towing pintle subassembly fatigue test's comprehensiveness and accuracy.
The application provides a towing hook subassembly fatigue test device includes:
the device comprises a fixedly arranged towing hook assembly and an actuator system connected with the towing hook assembly;
the actuator system is connected with the towing hook assembly through a connecting device, and applies vibration loads in different directions to the towing hook assembly through the connecting device.
In one embodiment, the actuator system includes a first actuator and a second actuator;
first actuator along first direction connect in connecting device, the second actuator along the second direction connect in connecting device, first actuator with the second actuator is respectively for the towing pintle subassembly applys vibration load.
In one embodiment, the second actuators are provided in two groups;
and the two groups of second actuators are respectively connected to the connecting device at two sides of the towing hook assembly along a third direction.
In one embodiment, the connecting device comprises:
a first linkage assembly coupled to a load output of the first actuator; and
a second linkage assembly coupled to a load output of the second actuator;
wherein the first connecting assembly is connected to the second connecting assembly, and the tow hook assembly is connected to the second connecting assembly.
In one embodiment, the first connection assembly comprises:
the connecting device comprises a connecting seat and a first connecting rod fixedly connected to the connecting seat;
the first connecting rod is arranged along the first direction, and one end, far away from the connecting seat, of the first connecting rod is connected to a load output end of the first actuator;
the second connection assembly includes:
the second connecting rod is connected with the connecting seat;
the second connecting rod is arranged along the third direction, the towing hook assembly is connected to the middle of the second connecting rod, and the load output ends of the two groups of second actuators are connected to the two ends of the second connecting rod respectively.
In one embodiment, the second connecting rod is slidably connected with the connecting seat along the three directions.
In one embodiment, a sliding rail extending along a third direction is arranged on one side, adjacent to the second connecting rod, of the connecting seat, a sliding part is installed on the sliding rail, and the second connecting rod is fixed to the sliding part.
In one embodiment, the device further comprises a guide mechanism;
the guide structure comprises a guide rod fixedly arranged along the first direction, a guide hole matched with the guide rod is formed in the connecting seat, and the connecting seat is assembled on the guide rod through the guide hole.
In one embodiment, the towing hook assembly is provided with a spherical component, and the middle part of the second connecting rod is provided with a cavity for accommodating the spherical component; and/or
And the load output ends of the two groups of second actuators are provided with spherical joints, and two ends of the second connecting rod are provided with cavities for containing the spherical joints.
In one embodiment, the portable electronic device further comprises a fixed seat and a bottom plate, wherein the fixed seat is fixed on the bottom plate, and the towing hook component is arranged on the fixed seat;
a support used for fixing the first actuator and a bracket used for fixing the second actuator are arranged on the bottom plate;
one end, far away from the load output end, of the first actuator is fixed to the support;
and one end of the second actuator, which is far away from the load output end, is fixed on the bracket.
The technical scheme provided by the application can comprise the following beneficial effects:
the towing hook assembly fatigue test device comprises a fixedly arranged towing hook assembly and an actuator system connected with the towing hook assembly; the actuator system is connected with the towing hook assembly through the connecting device, and applies vibration loads in different directions to the towing hook assembly through the connecting device. The towing hook component fatigue test device can simulate different scenes to carry out endurance fatigue verification on the towing hook component, and improves the comprehensiveness and accuracy of the towing hook component fatigue test.
In the fatigue test device for the towing hook assembly, an actuator system comprises a first actuator and a second actuator; the first actuator is connected to the connecting device in a first direction and the second actuator is connected to the connecting device in a second direction, the first actuator and the second actuator each applying a vibratory load to the tow hook assembly. The second actuator can exert the sinusoidal load that the phase difference is 90 along the second direction to the tow hook subassembly, and the first actuator can exert the reciprocating load along the first direction to the tow hook subassembly, can simulate different scenes of traveling more really and carry out intensity and endurance fatigue verification to the tow hook subassembly, has further promoted tow hook subassembly fatigue test's comprehensive and accuracy.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.
Drawings
The foregoing and other objects, features and advantages of the application will be apparent from the following more particular descriptions of exemplary embodiments of the application, as illustrated in the accompanying drawings wherein like reference numbers generally represent like parts throughout the exemplary embodiments of the application.
FIG. 1 is a schematic illustration of a coupling between a tractor and a trailer through a tow hook assembly according to the related art;
FIG. 2 is a schematic structural view of the tow hook assembly of FIG. 1;
FIG. 3 is a schematic structural diagram of a towing hook assembly fatigue testing device shown in an embodiment of the application;
FIG. 4 is a schematic view of the tow hook assembly of FIG. 3 mated with an attachment device;
FIG. 5 is a schematic structural view from another perspective of the tow hook assembly of FIG. 3 mated with an attachment device;
FIG. 6 is an exploded view of the tow hook assembly, attachment device and actuator system of FIG. 3 in cooperation.
Reference numerals: a tractor 101; a trailer 102; a tow hook assembly 10; a spherical member 11; a hook body 12; a connecting portion 13; a connecting device 20; a first actuator 330; a second actuator 310, a second actuator 320; a fixed seat 40; a base plate 50; a bracket 60; a column 61; a cross member 62; a support 70; a connecting base 220; a first link 221; a screw 222; a guide rod 223; a guide hole 224; a second link 210; a gland 211; a gland 212; a gland 213; a cavity 2111; a cavity 2121; a cavity 2131; a slider 230; a slide rail 231.
Detailed Description
Embodiments of the present application will be described in more detail below with reference to the accompanying drawings. While embodiments of the present application are illustrated in the accompanying drawings, it should be understood that the present application may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
It should be understood that although the terms "first," "second," "third," etc. may be used herein to describe various information, these information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present application. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
In the description of the present application, it is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be considered limiting of the present application.
Unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are intended to be inclusive and mean that, for example, they may be fixedly connected or detachably connected or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
In the early design and development stage of the tractor, fatigue test is generally required to be carried out on the towing hook assembly, the structure of the towing hook assembly is optimized in time, and the structural failure of the towing hook assembly in the design life cycle of the whole tractor is avoided. And the towing hook assembly fatigue test device in the related art has a simple structure, and the fatigue test is difficult to completely cover the use scene of a user. Aiming at the problems, the embodiment of the application provides a towing hook assembly fatigue test device which can simulate different scenes to carry out endurance fatigue verification on the towing hook assembly, and improves the comprehensiveness and accuracy of the towing hook assembly fatigue test.
The technical solutions of the embodiments of the present application are described in detail below with reference to the accompanying drawings.
FIG. 3 is a schematic structural diagram of a towing hook assembly fatigue testing device shown in an embodiment of the application;
referring to fig. 3, the fatigue testing device for the towing hook assembly of the present embodiment includes a towing hook assembly 10 fixedly disposed and an actuator system connected to the towing hook assembly 10; wherein the actuator system is connected to the tow hook assembly 10 by a connection device 20, wherein the actuator system applies vibrational loads in different directions to the tow hook assembly 10 by the connection device 20. The towing hook assembly fatigue test device can simulate different scenes to carry out endurance fatigue verification on the towing hook assembly, and improves the comprehensiveness and accuracy of a fatigue test.
FIG. 1 is a schematic illustration of a coupling between a tractor and a trailer through a tow hook assembly according to the related art;
fig. 2 is a schematic structural view of the tow hook assembly of fig. 1.
Referring to fig. 1 and 2, in the related art, a towing vehicle 101 is equipped with a towing hook assembly 10, one end of the towing hook assembly 10 is fixed to a body longitudinal beam of the towing vehicle 101, the other end is provided with a spherical part 11 and is connected to a trailer 102 through the spherical part 11, the towing vehicle 101 tows the trailer 102 through the towing hook assembly 10 to travel, and when the strength and fatigue resistance of the towing hook assembly 10 are poor, the problem of structural failure of the towing hook assembly is likely to occur during use.
Referring to fig. 3, in the present embodiment, the actuator system includes a first actuator 330, a second actuator 310, and a second actuator 320; the first actuator 330 is coupled to the hitch device 20 in a first direction X, the second actuator 310 and the second actuator 320 are coupled to the hitch device 20 in a second direction Z, and the first actuator 330, the second actuator 310 and the second actuator 320 each apply a vibratory load to the hitch assembly 10. Therefore, the vibration load applied to the towing hook assembly 10 by the towing vehicle 102 in different driving scenes can be simulated more truly, so that the towing hook assembly 10 can be subjected to more comprehensive and accurate endurance fatigue tests, the structure of the towing hook assembly 10 is optimized in time in the early development stage of the towing vehicle 101, and the phenomena of structural failure, excessive wear and the like of the towing hook assembly 10 in the design life cycle of the whole vehicle are avoided.
In the present embodiment, the first direction X is configured to simulate the forward or reverse direction of the tractor 101 and the trailer 102; the second direction Z is configured to simulate the direction of the vertical force borne by the towing hook assembly, and different actuators are respectively arranged in the first direction X and the second direction Z to apply vibration loads to the towing hook assembly 10, so that fatigue verification can be performed on the towing hook assembly in different driving fields, such as bumping, torsion, braking and the like, of the towing vehicle 101 and the towing vehicle 102 in the driving process.
Referring to fig. 3-6, in some embodiments, the tow hook assembly 10 is fixedly installed on the fixing base 40, and the fixing base 40 is fixed on the bottom plate 50, and preferably, the fixing base 40 may be configured in a T shape. The base plate 50 is provided with a support 70 for fixing the first actuator 330, and is also provided with a bracket 60 for fixing the second actuator 310 and the second actuator 320; an end 332 (shown in FIG. 6) of the first actuator 330 remote from the load output end is secured to the support 70; an end 312 of the second actuator 310 remote from the load output end and an end 322 of the second actuator 320 remote from the load output end are each secured to the bracket 60.
The support 70 can be set as a counterforce seat, the support 60 can be set as a portal frame, the portal frame comprises two columns 61 fixed on the bottom plate 50 and a beam 62 connected between the two columns 61, one end 312 of the second actuator 310 far away from the load output end and one end 322 of the second actuator 320 far away from the load output end are respectively and vertically fixedly connected to the beam 62, and thus the overall structure of the towing hook assembly fatigue test device is formed.
The second actuators are arranged in two groups, namely a second actuator 310 and a second actuator 320, and the second actuator 310 and the second actuator 320 are respectively connected to the connecting device 20 at two sides of the towing hook assembly 10 along the third direction Y. The third direction Y may be a horizontal lateral direction of the vehicle to which the simulated tow hook assembly 10 belongs.
With continued reference to fig. 3-6, the linkage 20 includes a first linkage assembly coupled to the load output of the first actuator 330; and a second linkage assembly coupled to the load output of the second actuator; wherein the first connecting assembly is connected to the second connecting assembly and the tow hook assembly 10 is connected to the second connecting assembly.
In one implementation, the first connection assembly includes a connection seat 220, a first link 221 fixedly connected to the connection seat 220; wherein the first link 221 is arranged along the first direction X, and one end of the first link 221, which is away from the connecting seat 220, is connected to a load output end 331 (shown in fig. 6) of the first actuator 330; a screw 222 may be provided at an end of the first link 221 remote from the coupling seat 220, and the first link 221 is threadedly coupled to the load output end of the first actuator 330 via the screw 222.
The second connecting assembly includes a second link 210 connected to the connecting seat 220; wherein the second link 210 is disposed along the third direction Y, the tow hook assembly 10 is connected to the middle portion of the second link 210, and the load output ends of the second actuator 310 and the second actuator 320 are respectively connected to both ends of the second link 210.
The first actuator 330 can apply a reciprocating load to the towing hook assembly 10 along the first direction X through the first connecting assembly, and the load output by the first actuator 330 can simulate the acceleration and braking scenes of the towing vehicle 101 and the towed vehicle 102, so as to simulate the influence verification of the ground friction force and the inertia force on the towing hook assembly 10.
In this embodiment, the second actuator 310 and the second actuator 320 can apply sinusoidal loads with a phase difference of 90 ° to the towing hook assembly 10 through the second connection assembly, and the loads output by the second actuator 310 and the second actuator 320 can simulate the situations that the towing vehicle and the towed vehicle pass through a rough road, a twisted road, and the like, and the influence on the towing hook assembly 10 when the ground is excited by up-and-down fluctuation is verified.
After the durability load which is equivalent to the design service life is applied to the towing hook assembly 10 through the first actuator 330, the second actuator 310 and the second actuator 320, if the sheet metal of the towing hook assembly 10 is cracked and does not exceed a set size (for example, 5mm) and the maximum abrasion amount of the spherical part 11 of the towing hook assembly 10 does not exceed the set size (for example, 1.5mm), the towing hook assembly 10 meets the design requirements, and the structure does not fail.
With continued reference to fig. 3-6, in the present embodiment, the second link 210 is slidably connected to the connecting seat 220 along the third direction Y. In one implementation manner, a slide rail 231 extending along the third direction Y is arranged on one side of the connecting seat 220 adjacent to the second connecting rod 210, a sliding part 230 is arranged on the slide rail 231, the second connecting rod 210 is fixed on the sliding part 230, and the second connecting rod 210 can slide along the third direction Y along with the sliding part 230, so that after the arrangement, the offset loading of the first actuator 330 and the connecting seat 220 relative to the towing hook assembly 10 along the third direction Y can be realized in the test process, the verification of the towing hook assembly 10 under different driving scenes can be simulated more truly, and the fatigue test is more accurate and effective.
The device of this embodiment still includes guiding mechanism, and guide structure includes the guide bar 223 that sets firmly along first direction X, and guide bar 223 can set up two sets ofly, and the one end of two sets of guide bars 223 is fixed in fixing base 40, has seted up on connecting seat 220 with guide bar 223 complex guiding hole 224, and connecting seat 220 assembles in guide bar 223 via guiding hole 224, sets up like this the back, and guide bar 223 can play the effect of support and direction to connecting seat 220.
In some embodiments, a fitting member made of a specific material is embedded in the guiding hole 224, and the guiding hole 224 is slidably fitted with the guiding rod 223 via the fitting member, which is preferably made of a rubber material, so as to effectively absorb the reaction force generated by the second actuator 310 and the second actuator 320 during the loading process.
The towing hook assembly 10 includes a hook 12, a connection portion 13 is disposed at one end of the hook 12 and fixed to the fixing base 40 through the connection portion 13, a spherical component 11 is disposed at the other end of the hook 12 and connected to the second link 210 through the spherical component 11, and a cavity 2111 for accommodating the spherical component 11 is disposed in the middle of the second link 210.
Referring to fig. 4 and 6, in some embodiments, the middle portion of the second link 210 is detachably provided with a pressing cover 211, a cavity 2111 for accommodating the spherical component 11 is defined by the matching portion of the pressing cover 211 and the second link 210, and the spherical component 11 of the tow hook assembly 10 can be limited in the cavity 2111 to rotate, so that the tow hook assembly 10 and the second link 210 are movably connected.
Further, the load output end of the second actuator 310 is provided with a ball joint 311, the load output end of the second actuator 320 is provided with a ball joint 321, one end of the second link 210 is provided with a cavity 2121 for receiving the ball joint 311, and the other end of the second link 210 is provided with a cavity 2131 for receiving the ball joint 321.
Referring to fig. 4 and 6, in some embodiments, the second link 210 has a gland 212 detachably mounted at one end thereof and a gland 213 detachably mounted at the other end thereof, the cavity 2121 of the one end of the second link 210 is defined by the portion of the gland 212 cooperating with the second link 210, and the cavity 2131 of the other end of the second link 210 is defined by the portion of the gland 213 cooperating with the second link 210. The ball joint 311 of the second actuator 310 is received and retained in the cavity 2121 and is rotatable in the cavity 2121, and the ball joint 321 of the second actuator 320 is received and retained in the cavity 2131 and is rotatable in the cavity 2131. This achieves the movable connection of the second actuator 310 and the second actuator 320 to the second link 210.
According to the scheme provided by the embodiment, the towing hook assembly 10 is movably connected with the second connecting rod 210 through the spherical part 11, the load output ends of the second actuator 310 and the second actuator 320 are respectively movably connected with the two ends of the second connecting rod 210 through the spherical joint 311 and the spherical joint 321, after the arrangement, the second actuator 310 and the second actuator 320 can apply sinusoidal loads with the phase difference of 90 degrees to the towing hook assembly 10, the first actuator 330 can apply reciprocating loads along the first direction X to the towing hook assembly 10, strength and endurance fatigue verification can be performed on the towing hook assembly 10 by simulating the towing vehicle in different driving scenes more truly, and the test is more accurate and comprehensive.
The aspects of the present application have been described in detail hereinabove with reference to the accompanying drawings. In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments. Those skilled in the art should also appreciate that the acts and modules referred to in the specification are not necessarily required in the present application. In addition, it can be understood that the steps in the method of the embodiment of the present application may be sequentially adjusted, combined, and deleted according to actual needs, and the modules in the device of the embodiment of the present application may be combined, divided, and deleted according to actual needs.
Having described embodiments of the present application, the foregoing description is intended to be exemplary, not exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen in order to best explain the principles of the embodiments, the practical application, or improvements made to the technology in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.
Claims (10)
1. The utility model provides a tow hook subassembly fatigue test device which characterized in that includes:
the device comprises a fixedly arranged towing hook assembly and an actuator system connected with the towing hook assembly;
the actuator system is connected with the towing hook assembly through a connecting device, and applies vibration loads in different directions to the towing hook assembly through the connecting device.
2. The tow hook assembly fatigue test device of claim 1,
the actuator system comprises a first actuator and a second actuator;
first actuator along first direction connect in connecting device, the second actuator along the second direction connect in connecting device, first actuator with the second actuator is respectively for the towing pintle subassembly applys vibration load.
3. The tow hook assembly fatigue test device of claim 2, wherein:
the second actuators are arranged into two groups;
and the two groups of second actuators are respectively connected to the connecting device at two sides of the towing hook assembly along a third direction.
4. The tow hook assembly fatigue test device of claim 3,
the connecting device includes:
a first linkage assembly coupled to a load output of the first actuator; and
a second linkage assembly coupled to a load output of the second actuator;
wherein the first connecting assembly is connected to the second connecting assembly, and the tow hook assembly is connected to the second connecting assembly.
5. The tow hook assembly fatigue test device of claim 4,
the first connection assembly includes:
the connecting device comprises a connecting seat and a first connecting rod fixedly connected to the connecting seat;
the first connecting rod is arranged along the first direction, and one end, far away from the connecting seat, of the first connecting rod is connected to a load output end of the first actuator;
the second connection assembly includes:
the second connecting rod is connected with the connecting seat;
the second connecting rod is arranged along the third direction, the towing hook assembly is connected to the middle of the second connecting rod, and the load output ends of the two groups of second actuators are connected to the two ends of the second connecting rod respectively.
6. The tow hook assembly fatigue test device of claim 5, wherein:
the second connecting rod is connected with the connecting seat in a sliding mode along the three directions.
7. The tow hook assembly fatigue test device of claim 6, wherein:
one side of the connecting seat, which is adjacent to the second connecting rod, is provided with a sliding rail extending along a third direction, a sliding part is arranged on the sliding rail, and the second connecting rod is fixed on the sliding part.
8. The tow hook assembly fatigue test device of claim 5, wherein:
the device also comprises a guide mechanism;
the guide structure comprises a guide rod fixedly arranged along the first direction, a guide hole matched with the guide rod is formed in the connecting seat, and the connecting seat is assembled on the guide rod through the guide hole.
9. The tow hook assembly fatigue test device of claim 5, wherein:
the towing hook assembly is provided with a spherical component, and the middle part of the second connecting rod is provided with a cavity for accommodating the spherical component; and/or
And the load output ends of the two groups of second actuators are provided with spherical joints, and two ends of the second connecting rod are provided with cavities for containing the spherical joints.
10. The tow hook assembly fatigue test device of claim 2, wherein:
the towing hook assembly is arranged on the fixed seat;
a support used for fixing the first actuator and a bracket used for fixing the second actuator are arranged on the bottom plate;
one end, far away from the load output end, of the first actuator is fixed to the support;
and one end of the second actuator, which is far away from the load output end, is fixed on the bracket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120563859.9U CN215065880U (en) | 2021-03-18 | 2021-03-18 | Towing hook assembly fatigue test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120563859.9U CN215065880U (en) | 2021-03-18 | 2021-03-18 | Towing hook assembly fatigue test device |
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| CN215065880U true CN215065880U (en) | 2021-12-07 |
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| CN202120563859.9U Active CN215065880U (en) | 2021-03-18 | 2021-03-18 | Towing hook assembly fatigue test device |
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- 2021-03-18 CN CN202120563859.9U patent/CN215065880U/en active Active
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