CN219015663U - Shock absorber testing device - Google Patents
Shock absorber testing device Download PDFInfo
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- CN219015663U CN219015663U CN202222297081.9U CN202222297081U CN219015663U CN 219015663 U CN219015663 U CN 219015663U CN 202222297081 U CN202222297081 U CN 202222297081U CN 219015663 U CN219015663 U CN 219015663U
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- piston rod
- hanging
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Abstract
The utility model discloses a shock absorber testing device which comprises a hanging bracket, wherein a hanging space is arranged in the hanging bracket, and a fixed base, a preload mechanism, an excitation mechanism, a force sensor and an acceleration sensor are arranged in the hanging space. Wherein, the bottom of the shock absorber is fixed on the fixed base; the lower end of the preload mechanism is connected with the fixed base, and the upper end of the preload mechanism is connected with a piston rod at the top of the shock absorber; the vibration excitation mechanism is hung on the hanging frame and is positioned above the vibration damper, the vibration excitation mechanism comprises a vibration exciter and a transmission rod, the bottom of the vibration exciter is connected with the upper end of the transmission rod, and the lower end of the transmission rod is connected with the piston rod; the force sensor is arranged at the joint of the transmission rod and the piston rod; the acceleration sensor is arranged on the piston rod. According to the shock absorber testing device, in the shock absorber testing process, the preload mechanism applies downward preload to the piston rod, so that accuracy of obtaining the dynamic stiffness value and the dynamic damping value of the shock absorber through the shock absorber testing device is improved.
Description
Technical Field
The utility model relates to the technical field of vehicle simulation analysis, in particular to a shock absorber testing device.
Background
In the simulation analysis of vehicle NVH (Noise, vibration, harshness, noise, vibration and harshness), when the vibration damper system is analyzed, not only the geometric models of the piston rod, the working cylinder, the oil storage cylinder and the upper and lower connecting pieces of the vibration damper are required to be established, but also the dynamic stiffness value and the dynamic damping value of the vibration damper are required to be set. There is therefore a need for a shock absorber testing device that obtains the dynamic stiffness value and the dynamic damping value of a shock absorber. However, the existing shock absorber testing device has the problem that the obtained dynamic stiffness value and dynamic damping value data of the shock absorber are inaccurate.
Disclosure of Invention
The utility model mainly aims to provide a vibration damper testing device, which aims to solve the problem that the dynamic stiffness value and the dynamic damping value of a vibration damper obtained by the existing vibration damper testing device are inaccurate in data.
In order to achieve the above object, the utility model provides a shock absorber testing device, which comprises a hanging bracket, wherein a hanging space is arranged in the hanging bracket, and the shock absorber testing device further comprises a hanging bracket arranged in the hanging space:
the bottom of the shock absorber is fixed on the fixed base;
the lower end of the pre-load mechanism is connected with the fixed base, and the upper end of the pre-load mechanism is connected with the piston rod at the top of the shock absorber so as to apply pre-load to the piston rod of the shock absorber;
the vibration excitation mechanism is hung on the hanging frame and is positioned above the vibration damper, the vibration excitation mechanism comprises a vibration exciter and a transmission rod, the bottom of the vibration exciter is connected with the upper end of the transmission rod, the lower end of the transmission rod is connected with the piston rod, and the vibration exciter applies vibration excitation force to the piston rod through the transmission rod to enable the piston rod to vibrate;
the force sensor is arranged at the joint of the transmission rod and the piston rod;
and the acceleration sensor is arranged on the piston rod and is used for sensing the acceleration of the piston rod.
Preferably, the preload mechanism comprises a plurality of elastic pieces, the elastic pieces are distributed on the periphery of the shock absorber at intervals, the upper ends of the elastic pieces are connected with the piston rod, and the lower ends of the elastic pieces are connected with the fixed base.
Preferably, the elastic piece is an elastic rope or a spring, and a plurality of elastic pieces are uniformly distributed at intervals.
Preferably, the piston rod is sleeved with a connecting disc, a plurality of hanging holes are uniformly formed in the circumferential direction of the connecting disc at intervals, and a plurality of hanging rings are uniformly distributed in the circumferential direction of the fixed base at intervals; the hanging holes, the hanging rings and the elastic pieces are consistent in number and are arranged in one-to-one correspondence; the upper end and the lower end of each elastic piece are respectively provided with a first hook and a second hook, each first hook is hung on the corresponding hanging hole, and each second hook is hung on the corresponding hanging ring. Preferably, a connector is arranged at the bottom of the vibration exciter, and the connector is in threaded connection with the transmission rod.
Preferably, the lower end of the transmission rod is in threaded connection with a first connecting block, and the lower end of the first connecting block is in threaded connection with the upper end of the force sensor.
Preferably, a second connecting block is connected to the lower end of the force sensor in a threaded manner, and the lower end of the second connecting block is connected to the piston rod in a threaded manner.
Preferably, the hanger comprises a cross beam and two brackets, wherein the two brackets are arranged at intervals on the lower side of the cross beam along the extending direction of the cross beam and form the hoisting space together with the cross beam; the shock absorber is hung on the cross beam.
Preferably, a plurality of hanging hoists are arranged on the cross beam at intervals along the extending direction of the cross beam, and the shock absorber is hung on the cross beam through the hanging hoists.
Preferably, universal wheels are mounted at the bottom of the support.
According to the shock absorber testing device, in the process of testing the shock absorber, the preload mechanism applies downward preload to the piston rod, so that the stress of the shock absorber is consistent with the stress of the shock absorber in the actual working state of the shock absorber in the process of testing the shock absorber by the shock absorber testing device, excitation force data and acceleration data collected by the shock absorber testing device are consistent with the excitation force data and the acceleration data of the shock absorber in the actual working state of the shock absorber, and the accuracy of the dynamic stiffness value and the dynamic damping value data of the shock absorber obtained by the shock absorber testing device is further improved.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram illustrating an assembly of a shock absorber testing apparatus according to an embodiment of the present utility model;
FIG. 2 is a partially exploded view of a shock absorber testing apparatus according to an embodiment of the present utility model;
FIG. 3 is a schematic view of a support frame of a shock absorber testing apparatus according to an embodiment of the present utility model.
Reference numerals illustrate:
| reference numerals | Name of the name | Reference numerals | Name of the |
| 100 | Shock |
41a | |
| 10 | |
42 | |
| 11 | Hoisting |
43 | |
| 12 | |
50 | |
| 13 | |
51 | Vibration exciter |
| 14 | Hoist | 511 | |
| 15 | |
52 | |
| 20 | |
521 | First connecting block |
| 21 | Piston |
60 | |
| 30 | Fixed |
61 | Second connecting |
| 31 | |
70 | |
| 40 | |
80 | Connecting |
| 41 | |
81 | Hanging hole |
The achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
The technical solutions of the present embodiment will be clearly and completely described below with reference to the drawings in the present embodiment, and it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
It should be noted that all the directional indications (such as up, down, left, right, front, and rear … …) in this embodiment are merely for explaining the relative positional relationship, movement conditions, and the like between the components in a certain specific posture (as shown in the drawings), and if the specific posture is changed, the directional indication is changed accordingly.
Furthermore, descriptions such as those referred to as "first," "second," and the like, are provided for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implying an order of magnitude of the indicated technical features in the present disclosure. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present utility model, unless specifically stated and limited otherwise, the terms "connected," "affixed," and the like are to be construed broadly, and for example, "affixed" may be a fixed connection, a removable connection, or an integral body; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
In addition, the technical solutions of the embodiments of the present utility model may be combined with each other, but it is necessary to be based on the fact that those skilled in the art can implement the technical solutions, and when the technical solutions are contradictory or cannot be implemented, the combination of the technical solutions should be considered as not existing, and not falling within the scope of protection claimed by the present utility model. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
The description of the orientations of "up", "down", "front", "rear", "left", "right", etc. in the present utility model is based on the orientations shown in fig. 2 and 1, and is merely for explaining the relative positional relationship between the components in the orientations shown in fig. 1 and 2, and if the specific orientation is changed, the directional indication is changed accordingly.
The present utility model proposes a shock absorber testing apparatus 100.
The shock absorber testing device 100 of the embodiment comprises a hanging bracket 10, a hanging space 11 is arranged in the hanging bracket 10, and the shock absorber testing device 100 further comprises a fixed base 30, a pre-load mechanism 40, an excitation mechanism 50, a force sensor 60 and an acceleration sensor 70 which are arranged in the hanging space 11. Wherein the bottom of shock absorber 20 is fixed to fixed base 30; the lower end of the preload mechanism 40 is connected with the fixed base 30, and the upper end of the preload mechanism 40 is connected with the piston rod 21 at the top of the shock absorber 20 to apply a preload to the piston rod 21 of the shock absorber 20; the vibration excitation mechanism 50 is hung on the hanging frame 10 and is positioned above the shock absorber 20, the vibration excitation mechanism 50 comprises a vibration exciter 51 and a transmission rod 52, the bottom of the vibration exciter 51 is connected with the upper end of the transmission rod 52, the lower end of the transmission rod 52 is connected with the piston rod 21, and the vibration exciter 51 applies vibration excitation force to the piston rod 21 through the transmission rod 52 to enable the piston rod 21 to vibrate; the force sensor 60 is arranged at the joint of the transmission rod 52 and the piston rod 21, and the transmission rod 52, the force sensor 60 and the piston rod 21 are coaxially arranged; an acceleration sensor 70 is mounted on the piston rod 21 for sensing acceleration of the piston rod 21.
As shown in fig. 1 to 3, the damper test device 100 of the present utility model includes a fixed base 30, a preload mechanism 40, and a vibration exciter 51 all located in a hanging space 11 of a hanger 10. The hanging bracket 10 hangs the vibration exciter 51 above the vibration damper 20, the vibration exciter 51 is connected with the piston rod 21 of the vibration damper 20 through the transmission rod 52, the bottom of the vibration damper 20 is fixed on the top of the fixed base 30 through an adhesive, the lower end of the pre-load mechanism 40 is connected with the side wall of the fixed base 30, and the upper end of the pre-load mechanism 40 is connected with the piston rod 21.
It will be appreciated that the force sensor 60 and the acceleration sensor 70 of the present utility model may be communicatively connected to an external controller, and that the shock absorber testing apparatus 100 of the present utility model applies a pulling force to the piston rod 21 by the preload mechanism 40 so as to apply a downward preload to the piston rod 21 during the test of the shock absorber 20, so that the force applied to the piston rod 21 of the shock absorber 20 is consistent with the force applied to the shock absorber 20 in the actual operating state. The vibration exciter 51 applies exciting force to the piston rod 21 through the transmission rod 52 to enable the piston rod 21 to vibrate up and down, the force sensor 60 sends exciting force signals sensed by the piston rod 21 to the controller in the process of vibrating up and down of the piston rod 21, and the controller collects the exciting force signals to obtain exciting force data; the acceleration sensor 70 senses an acceleration signal in the process of up-and-down vibration of the piston rod 21 and sends the acceleration signal to the controller, and the controller collects the acceleration signal to obtain acceleration data. The controller obtains a dynamic stiffness value and a dynamic damping value of the shock absorber 20 from the obtained acceleration data and excitation force data. Specifically, the controller performs secondary integration on the obtained acceleration data to obtain displacement data, then obtains a frequency response function of the shock absorber 20 according to the displacement data and the exciting force data, and finally obtains a dynamic stiffness value and a dynamic damping value of the shock absorber 20 through the following formula conversion.
It should be noted that, shock absorber 20 may be equivalently a single degree of freedom mass-spring-damping system, and the specific conversion process is that a relationship between displacement and exciting force is obtained by a single degree of freedom vibration equation; and deriving by combining the frequency response function calculation formula and the relation between displacement and exciting force to obtain the expression of the dynamic stiffness value and the dynamic damping value of the shock absorber 20. The specific formula is as follows:
from the single degree of freedom vibration equation:
F＝-mω 2 X+jωCX+KX
in the formula:
f is an exciting force acting on the piston rod 21 of the damper 20, which is obtained from the exciting force data, and has a unit of N;
x is the displacement of the piston rod 21 of the shock absorber 20 integrated from the acceleration data in m;
k is the stiffness value of shock absorber 20 in N/m;
c is the damping value of shock absorber 20 in units of (N/m)/s;
m is the mass of the piston rod 21 in kg;
omega-circle frequency in rad/s;
j-complex number.
The relation between displacement and exciting force can be obtained:
and then, the frequency response function calculation formula is as follows:
and
H XF (s)＝Re(H XF (s))+jIm(H XF (s))
In the formula:
H XF (s) is a frequency response function of piston rod 21 of shock absorber 20 in m/N;
x(s) is the displacement response of piston rod 21 of shock absorber 20 in m;
f(s) is an exciting force acting on the piston rod 21 of the shock absorber 20 in N;
re is Real part in the displacement response result, and the unit is m/N;
im is the phase image in the displacement response result, and the unit is m/N;
an expression of the dynamic stiffness value and the dynamic damping value of shock absorber 20 is obtained:
wherein:
k is the stiffness value of shock absorber 20 in N/m;
c is the damping value of shock absorber 20 in N/m/s;
re is Real part in the displacement response result, and the unit is m/N;
im is the phase image in the displacement response result, and the unit is m/N;
m is the mass of the piston rod 21, and the unit is kg;
omega is the circular frequency in rad/s.
According to the shock absorber testing device 100, in the process of testing the shock absorber 20, the preload mechanism 40 applies downward preload to the piston rod 21, so that the stress of the shock absorber 20 is consistent with the stress of the shock absorber 20 in the actual working state of the shock absorber 20 in the process of testing the shock absorber 20 by the shock absorber testing device 100, the exciting force data and the acceleration data collected by the shock absorber testing device 100 are consistent with the exciting force data and the acceleration data of the shock absorber 20 in the actual working state of the shock absorber 20, and the accuracy of the dynamic stiffness value and the dynamic damping value data of the shock absorber 20 obtained by the shock absorber testing device 100 is further improved.
In one embodiment, the preload mechanism 40 includes a plurality of elastic members 41, the plurality of elastic members 41 are spaced apart from the outer circumference of the shock absorber 20, and the upper end of each elastic member 41 is connected to the piston rod 21, and the lower end of each elastic member 41 is connected to the fixed base 30.
As shown in fig. 1, there are two elastic members 41, and the two elastic members 41 are spaced apart from the outer circumference of the shock absorber 20 and located on the left and right sides of the shock absorber 20. The upper end of each elastic member 41 is connected with the piston rod 21, and the lower end of each elastic member 41 is connected with the side wall of the fixed base 30, so that the elastic restoring force of each elastic member 41 applies a preload to the piston rod 21, and the structural design is simple and reasonable. Moreover, the two elastic members 41 are distributed at intervals on the periphery of the shock absorber 20 and act together to apply a preload to the piston rod 21, so that the preload applied to the piston rod 21 is ensured to be closer to the preload applied to the shock absorber 20 in the actual working state, and the accuracy of the dynamic stiffness value and the dynamic damping value of the shock absorber 20 obtained by the shock absorber testing device 100 is further improved.
In one embodiment, the elastic members 41 are elastic ropes 41a or springs, and the plurality of elastic members 41 are uniformly spaced. As shown in fig. 1, two elastic members 41 are symmetrically distributed on the periphery of the shock absorber 20 and located at the left and right sides of the shock absorber 20, so that the distribution of the preload applied to the piston rod 21 of the shock absorber 20 by the two elastic members 41 is more uniform, the preload applied to the piston rod 21 is more similar to the preload applied to the shock absorber 20 in the actual working state, and the accuracy of the dynamic stiffness value and the dynamic damping value of the shock absorber 20 obtained by the shock absorber testing device 100 is further improved. And, elastic rope 41a or spring all have the advantage of simple to operate, easily draw materials, be convenient for realize that elastic component 41 applys the function of preload to piston rod 21.
In an embodiment, a connecting disc 80 is sleeved on the piston rod 21, a plurality of hanging holes 81 are uniformly formed in the circumferential direction of the connecting disc 80 at intervals, and a plurality of hanging rings 31 are uniformly distributed in the circumferential direction of the fixed base 30 at intervals; the hanging holes 81, the hanging rings 31 and the elastic members 41 are consistent in number and are arranged in a one-to-one correspondence manner; the upper and lower ends of each elastic member 41 are respectively provided with a first hook 42 and a second hook 43, each first hook 42 is hung on a corresponding hanging hole 81, and each second hook 43 is hung on a corresponding hanging ring 31.
As shown in fig. 2, a connecting hole is formed in the middle of the connecting disc 80, the connecting disc 80 is sleeved on the piston rod 21 through the connecting hole, two symmetrical hanging holes 81 are formed in the circumferential direction of the connecting disc 80, the two hanging holes 81 are located on the left side and the right side of the connecting hole, two symmetrical hanging rings 31 are distributed in the circumferential direction of the fixed base 30, and the two hanging rings 31 are located on the left side and the right side of the fixed base 30. The number of the elastic members 41 is two, and the two elastic members 41 are distributed on the left and right sides of the shock absorber 20. The two hanging holes 81 are arranged in one-to-one correspondence with the two hanging rings 31 and the two elastic members 41.
In the process of installing the elastic pieces 41, only the first hooks 42 of each elastic piece 41 are required to be hung on the corresponding hanging holes 81, and the second hooks 43 are required to be hung on the corresponding hanging rings 31, so that the shock absorber testing device is simple and convenient, connection between each elastic piece 41 and the piston rod 21 is facilitated, and convenience in assembly of the shock absorber testing device 100 is improved.
In one embodiment, as shown in fig. 2, a connector 511 is disposed at the bottom of the vibration exciter 51, and the connector 511 is screwed with a transmission rod 52. The vibration exciter 51 is in threaded connection with the transmission rod 52 through the connector 511, when the transmission rod 52 needs to be replaced, the transmission rod 52 is detached from the connector 511, and the vibration exciter is simple and convenient and easy to operate, and improves the replacement efficiency of the transmission rod 52.
In the preferred embodiment, the transmission rod 52, the force sensor 60 and the piston rod 21 are coaxially arranged, which is beneficial for transmitting the exciting force of the exciter 51 to the piston rod 21 through the transmission rod 52 and the force sensor 60, thereby being beneficial for the vibration damper 20 to drive the piston rod 21 to vibrate, and further being beneficial for realizing the function of the vibration damper testing device 100 for testing the vibration damper 20.
In one embodiment, as shown in fig. 2, the lower end of the transmission rod 52 is screwed with a first connection block 521, and the lower end of the first connection block 521 is screwed with the upper end of the force sensor 60. When the force sensor 60 needs to be replaced, the force sensor 60 is detached from the first connecting block 521, so that the operation is simple and convenient, the operation is easy, and the replacement efficiency of the force sensor 60 is improved. And, the connection between the force sensor 60 and the transmission rod 52 is realized through the first connecting block 521, so that the force sensor 60 and the transmission rod 52 can be prevented from being directly connected, and when the force sensor 60 is arranged below the transmission rod 52, the position of the force sensor 60 can be adjusted to adjust the coaxiality of the force sensor 60 and the transmission rod 52, and then the force sensor 60 is connected with the transmission rod 52 through the first connecting block 521, so that the design is reasonable, and the convenience for adjusting the coaxiality of the force sensor 60 and the transmission rod 52 is improved.
In an embodiment, as shown in fig. 2, a second connection block 61 is screwed to the lower end of the force sensor 60, and the lower end of the second connection block 61 is screwed to the piston rod 21. When the shock absorber 20 needs to be replaced, the piston rod 21 of the shock absorber 20 is detached from the second connecting block 61, so that the shock absorber 20 is simple and convenient, is easy to operate, and improves the replacement efficiency of the shock absorber 20. Moreover, the force sensor 60 is connected with the piston rod 21 through the first connecting block 521, so that the force sensor 60 can be prevented from being directly connected with the piston rod 21, and when the force sensor 60 is arranged above the piston rod 21, the position of the force sensor 60 can be adjusted to adjust the coaxiality of the force sensor 60 and the piston rod 21, and then the force sensor 60 is connected with the piston rod 21 through the second connecting block 61, so that the design is reasonable, and the convenience for adjusting the coaxiality of the force sensor 60 and the piston rod 21 is improved.
In one embodiment, the hanger 10 comprises a cross beam 12 and two brackets 13, wherein the two brackets 13 are arranged at intervals on the lower side of the cross beam 12 along the extending direction of the cross beam 12 and form a lifting space 11 with the cross beam 12; shock absorber 20 is suspended from beam 12. As shown in fig. 1, the extending direction of the beam 12 is a left-right direction, and the two brackets 13 are mounted on the lower side of the beam 12 at intervals along the left-right direction, so that the assembly of the two brackets 13 and the beam 12 can be realized, and the structural design is simple, reasonable and compact.
In a preferred embodiment, the cross beam 12 is provided with a plurality of hoist blocks 14 spaced apart along the extension direction thereof, and the damper 20 is suspended from the cross beam 12 by the plurality of hoist blocks 14. As shown in fig. 1, three hoist blocks 14 are arranged on the beam 12 along the left-right direction at intervals, the shock absorber 20 is suspended on the beam 12 through the three hoist blocks 14, and the three hoist blocks 14 all play a role in fixing the shock absorber 20, so that the stability of the shock absorber 20 suspended on the beam 12 is improved, and the stability of the shock absorber testing device 100 is further improved. The chain length of the hoist 14 is adjustable, and when the height of the vibration exciter 51 needs to be adjusted, the chain length of the hoist 14 is only needed to be adjusted, so that the method is simple and convenient.
In a preferred embodiment, as shown in fig. 3, the bottom of the bracket 13 is fitted with a universal wheel 15. Through installing universal wheel 15 in the bottom of support 13, make support 13 can remove to a plurality of directions to make support 13 can more convenient remove the required position, be favorable to the transport of support 13, further promoted the convenience that shock absorber testing arrangement 100 used.
The foregoing description is only of the preferred embodiments of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structural changes made by the description of the present utility model and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the utility model.
Claims (10)
1. The shock absorber testing device is characterized by comprising a hanging bracket, wherein a hanging space is arranged in the hanging bracket, and the shock absorber testing device further comprises a hanging bracket arranged in the hanging space:
the bottom of the shock absorber is fixed on the fixed base;
the lower end of the pre-load mechanism is connected with the fixed base, and the upper end of the pre-load mechanism is connected with the piston rod at the top of the shock absorber so as to apply pre-load to the piston rod of the shock absorber;
the vibration excitation mechanism is hung on the hanging frame and is positioned above the vibration damper, the vibration excitation mechanism comprises a vibration exciter and a transmission rod, the bottom of the vibration exciter is connected with the upper end of the transmission rod, the lower end of the transmission rod is connected with the piston rod, and the vibration exciter applies vibration excitation force to the piston rod through the transmission rod to enable the piston rod to vibrate;
the force sensor is arranged at the joint of the transmission rod and the piston rod;
and the acceleration sensor is arranged on the piston rod and is used for sensing the acceleration of the piston rod.
2. The shock absorber testing apparatus of claim 1, wherein said preload mechanism comprises a plurality of elastic members, a plurality of said elastic members being spaced apart around the periphery of said shock absorber, and an upper end of each of said elastic members being connected to said piston rod, and a lower end of each of said elastic members being connected to said fixed base.
3. The shock absorber testing apparatus of claim 2, wherein said elastic member is an elastic string or a spring, and a plurality of said elastic members are uniformly spaced apart.
4. The shock absorber testing device as set forth in claim 3, wherein said piston rod is sleeved with a connecting disc, a plurality of hanging holes are uniformly provided at intervals in the circumferential direction of said connecting disc, and a plurality of hanging rings are uniformly provided at intervals in the circumferential direction of said fixed base; the hanging holes, the hanging rings and the elastic pieces are consistent in number and are arranged in one-to-one correspondence; the upper end and the lower end of each elastic piece are respectively provided with a first hook and a second hook, each first hook is hung on the corresponding hanging hole, and each second hook is hung on the corresponding hanging ring.
5. The shock absorber testing apparatus according to any one of claims 1 to 4, wherein a connector is provided at a bottom of the vibration exciter, and the connector is screwed with the transmission rod.
6. The shock absorber testing apparatus according to any one of claims 1 to 4, wherein a first connection block is screw-coupled to a lower end of the transmission rod, and a lower end of the first connection block is screw-coupled to an upper end of the force sensor.
7. The shock absorber testing apparatus according to any one of claims 1 to 4, wherein a second connection block is threadedly connected to a lower end of the force sensor, and a lower end of the second connection block is threadedly connected to the piston rod.
8. The shock absorber testing apparatus according to any one of claims 1 to 4, wherein the hanger comprises a cross beam and two brackets, the two brackets being installed at a distance from the underside of the cross beam in the extending direction of the cross beam and enclosing the hanging space with the cross beam; the shock absorber is hung on the cross beam.
9. The shock absorber testing device of claim 8, wherein a plurality of hoist blocks are arranged on the cross beam at intervals along the extending direction of the cross beam, and the shock absorber is suspended on the cross beam through the hoist blocks.
10. The shock absorber testing apparatus of claim 8, wherein a universal wheel is mounted to a bottom of the bracket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222297081.9U CN219015663U (en) | 2022-08-30 | 2022-08-30 | Shock absorber testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222297081.9U CN219015663U (en) | 2022-08-30 | 2022-08-30 | Shock absorber testing device |
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| Publication Number | Publication Date |
|---|---|
| CN219015663U true CN219015663U (en) | 2023-05-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202222297081.9U Active CN219015663U (en) | 2022-08-30 | 2022-08-30 | Shock absorber testing device |
Country Status (1)
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| CN (1) | CN219015663U (en) |
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2022
- 2022-08-30 CN CN202222297081.9U patent/CN219015663U/en active Active
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