CN201145635Y - Chair headrest impact experimental bench - Google Patents
Chair headrest impact experimental bench Download PDFInfo
- Publication number
- CN201145635Y CN201145635Y CNU2007201961961U CN200720196196U CN201145635Y CN 201145635 Y CN201145635 Y CN 201145635Y CN U2007201961961 U CNU2007201961961 U CN U2007201961961U CN 200720196196 U CN200720196196 U CN 200720196196U CN 201145635 Y CN201145635 Y CN 201145635Y
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- chair headrest
- lifting
- impact
- column
- guide rail
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Abstract
The utility model relates to a seat headrest impact experiment table. The seat headrest impact experiment table comprises an experiment table base, a seat mounting device which is arranged on the experiment table base and used for mounting an automobile seat and an upright post connected with the experiment table base, wherein, the seat headrest impact experiment table also comprises a lifting mechanism which is connected with the upright post and can axially reciprocate along the upright post and a force application mechanism which is connected with the lifting mechanism, driven to move by the lifting mechanism and used for applying impact force to the seat headrest; compared with the prior seat headrest impact experiment table, the seat headrest impact experiment table has simple structure and low cost under the condition of also realizing a seat headrest impact experiment.
Description
Technical field
The utility model relates to a kind of vehicle safety performance experimental apparatus for testing, relates in particular to a kind of car seat headrest impact property test experiment table.
Background technology
Chair headrest is one of automobile important safety parts, and its effect provides occupant's riding comfort on the one hand, is to prevent to cause the incidence internal injury owing to the excessive layback of the relative chest of head in rear impact on the other hand; As seen, the Performance Detection of chair headrest is most important.
At present, the general chair headrest impact property testing apparatus of Shi Yonging servo apply hydraulic pressure system often, this kind chair headrest impact property testing apparatus complex structure, cost is higher, and it is difficult to safeguard; In China's utility model application prospectus publication number be called for " CN 2624205 " name " car seat headrest strength test platform " patent disclosure a kind of chair headrest impact experiment platform, this kind chair headrest impact experiment platform is grouped into by mechanical part and electric control part; Mechanical part comprises base, movably loading arm etc. is carried on the back in framework, headrest loading arm, vacation; It is characterized in that: be fixed with guide rail on the base, and on guide rail the mounting support plate, on support plate, be fixed with mariages thick stick framework, be provided with middle cross beam in the middle of its framework, loading arm is fixedlyed connected with middle cross beam, axle is connected with headrest loading arm and backrest loading arm on the H point of loading arm, is hinged with false back of the body template on the backrest loading arm; One end of boosting-rod is hinged on the headrest loading arm, and the nut on the other end guiding feed rod parallel with leading screw is hinged; False back of the body hold-down arm one end is fixed on the false back of the body template, and the other end is connected that there is limited block both sides on the leading screw; This kind car seat headrest strength test platform is low than the chair headrest impact property testing apparatus cost of servo apply hydraulic pressure system architecture, but its structure is still complicated, and cost is higher, and it is difficult to safeguard.
The utility model content
The technical problems to be solved in the utility model provides a kind of simple in structure, lower-cost chair headrest impact experiment platform.
Goal of the invention of the present utility model is achieved through the following technical solutions:
A kind of chair headrest impact experiment platform of the present utility model, it comprises: the experiment table base, be arranged on seat mount on this experiment table base, that be used to install automotive seat, be connected the column on this experiment table base, wherein, also comprise: the elevating mechanism that is connected on this column, can axially moves back and forth along this column is connected by this elevating mechanism with this elevating mechanism and drives the force application mechanism that moves, be used for applying to chair headrest impulsive force.
Further, described force application mechanism comprises: be used for applying to chair headrest the pendulum movement device of impulsive force, be used to provide the fork lifting gear of this pendulum movement device work potential.
Described elevating mechanism comprises: the guide rail mechanism that is connected on the column, axially moves back and forth along this column, be connected the lifting cantilever on this guide rail mechanism, be used to drive the lifting power unit that this lifting cantilever slides on guide rail mechanism, be arranged between this lifting power unit and lifting cantilever, be used for the gear unit of this lifting power unit outputting power of transmission.
On the said structure basis, wherein:
Described guide rail mechanism is the secondary mechanism of slide block guide rail, comprises being arranged on the guide rail of column on axially, and with the slide block that this guide rail is slidingly matched, this slide block and described lifting cantilever removably connect; Described lifting power unit is the lifting motor reductor that is arranged on the column top; The described gear unit feed screw nut pair mechanism that this lifting motor reductor drives that serves as reasons comprises the screw mandrel with this lifting motor braking maneuver power output shaft interlock, is detachably connected on the described lifting cantilever and this wire rod thread nut engaged; Drive this feed screw nut pair mechanism by the lifting motor reductor that is arranged on the column top, make this lifting cantilever slide at the column axial direction along described guide rail.
Described pendulum movement device comprises: with the bearing seat that described lifting cantilever is connected, the bearing that be set on this bearing seat, is rotatably assorted with it, be set on this bearing, the pendulum body affixed with it, be used for the stop means of spacing this rotating shaft rotational travel.
As the further improvement of such scheme, described pendulum movement device comprises: be used to measure described bearing and driven the measurement of angle device that produces the anglec of rotation by the pendulum body; Because it is affixed with it that the pendulum body is set on the bearing,, measure the angle that described bearing rotation angle equals to measure the rotation of pendulum body so the angle that bearing rotates is identical with the angle of pendulum body rotation.
Described pendulum body comprises: be set on this bearing, the fork affixed with it, be connected the impact head that this fork tail end is used to impact described chair headrest, described impact head is the semisphere impact head, and described pendulum body is provided with balancing weight; According to the computing formula of impacting effective mass in the experiment: M=mL/a; Wherein, M impacts effective mass, for a is a distance between center of percussion and the rotating shaft core, L is the distance between the pendulum body weight heart and the rotating shaft core, and m is the gross mass of pendulum body, wherein, m, a are definite value when the pendulum body is selected, in order to reach the impact effective mass M that experiment needs, need balancing weight be set on the pendulum body and regulate its center of gravity, promptly adjust the L value, satisfy experimental requirements.
As the further improvement of such scheme, described stop means is the air disc brake that is arranged on the bearing; The employing air disc brake after the pendulum body is finished impact output, with its braking, has been eliminated owing to chair headrest may bring the huge bounce-back energy of pendulum body and has been produced action danger.
Described impact head is provided with acceleration transducer; By acceleration transducer is set, act on acceleration change on the impact head in the time of can measuring and write down bump on impact head.
Described impact head diameter 165mm, its effective mass is 6.8kg.
Described measurement of angle device is the real axis scrambler that is connected by shaft coupling with bearing; The angle of setting under the free suspension status of pendulum body is 0 °, and the start angle of its freely falling body is Ω; When pendulum is got back to 0 ° of position by the Ω pendulum, potential energy is converted into kinetic energy fully, at this moment read instantaneous angular velocity omega by scrambler, conversion formula v=ω .r according to angle, linear velocity, wherein r is the distance of rotating shaft center and rum point) can calculate impact velocity v, and then can give the freely falling body pin-point accuracy location of pendulum body at different requirement of experiment.
Further improvement as such scheme, described fork lifting gear comprises: the holder that is used for the described pendulum body of clamping, be used to drive the power spare that this holder promotes, be arranged between this power spare and holder, be used for the transmission component of this power spare outputting power of transmission.
Further, described holder be can the described pendulum body of adhesive electromagnet; Described power spare is a stepper motor; Described transmission component comprises and the cylinder of the power output shaft of this stepper motor interlock that two ends are connected to wire rope between cylinder and the electromagnet, and is connected pulley blocks between described cylinder and electromagnet by this wire rope.
Described experiment table base is the cast iron platform with T type locating slot; Adopt cast iron platform to make the experiment table base, the enormous impact that produces in the time of can absorbing the pendulum bump preferably, the security and stability of raising equipment, the T locating slot structure of experiment table base also is convenient to the adjusting of seat mount position.
Be provided with safty shield around the described experiment table; By safty shield is set, can prevent to be flown out by the alluvium accident, further improved device '.
A kind of chair headrest impact experiment platform of the present utility model, adopt the experiment table base, be arranged on seat mount on this experiment table base, that be used to install automotive seat, be connected the column on this experiment table base, wherein, also comprise: the elevating mechanism that is connected on this column, can axially moves back and forth along this column is connected by this elevating mechanism with this lifting and drives the force application mechanism that moves, be used for applying to chair headrest impulsive force; Than conventional seat headrest impact experiment platform, can realize that equally under the situation of chair headrest impact experiment, simple in structure, cost is lower.
Description of drawings
In order to be easy to explanation, the utility model is done to describe in detail by following preferred embodiment and accompanying drawing.
Fig. 1 is the whole main TV structure synoptic diagram of this kind chair headrest impact experiment platform;
Fig. 2 is another direction structure synoptic diagram of Fig. 1;
Fig. 3 is the structural representation of the pendulum movement device of a kind of chair headrest impact experiment of the utility model platform;
The structural representation of the elevating mechanism of this kind of Fig. 4 chair headrest impact experiment platform;
The structural representation of the fork lifting gear of this kind of Fig. 5 chair headrest impact experiment platform.
Embodiment
See also Fig. 1 and shown in Figure 5, a kind of chair headrest impact experiment platform of the present utility model, it comprises: experiment table base 1, be arranged on seat mount 6 on this experiment table base 1, that be used to install automotive seat, be connected the column 3 on this experiment table base 1, wherein, also comprise: the elevating mechanism 5 that is connected on this column 3, can axially moves back and forth along this column 3 is connected by this elevating mechanism 5 with this elevating mechanism 5 and drives the force application mechanism that moves, be used for applying to chair headrest impulsive force.
In this embodiment, described force application mechanism comprises: be used for applying to chair headrest the pendulum movement device 4 of impulsive force, be used to provide the fork lifting gear 7 of these pendulum movement device 4 work potential.
In this embodiment, elevating mechanism 5 comprises: the guide rail mechanism 19 that is connected on the column 3, axially moves back and forth along this column 3, be connected the lifting cantilever 18 on this guide rail mechanism 19, be used to drive the lifting power unit 16 that this lifting cantilever 18 slides on guide rail mechanism 19, be arranged on 18 on this lifting power unit 16 and lifting cantilever, be used for the gear unit 17 of these lifting power unit 16 outputting powers of transmission.
Described guide rail mechanism 19 is the secondary mechanism of slide block guide rail, comprises being arranged on the guide rail 191 of column 3 on axially, and with the slide block 192 that this guide rail 191 is slidingly matched, this slide block 192 removably connects with described lifting cantilever 18; Described lifting power unit 16 is for being arranged on the lifting motor reductor 16 on column 3 tops; The described gear unit 17 feed screw nut pair mechanism that this lifting motor reductor 16 drives that serves as reasons, comprise the screw mandrel 171 with this lifting motor reductor 16 power output shaft (not shown)s interlocks, be detachably connected on the described lifting cantilever 18 nut 172 with these screw mandrel 171 threaded engagement; Drive this feed screw nut pair mechanism 17 by the lifting motor reductor 16 that is arranged on column 3 tops, make this lifting cantilever 18 slide at column 3 axial directions along described guide rail 191.
In this embodiment, pendulum movement device 4 comprises: the bearing seat 10 that is connected with described lifting cantilever 18, the bearing 11 that be set on this bearing seat 10, is rotatably assorted with it, be set on this bearing 11, the pendulum body 12 affixed with it, the stop means 13 that is used for spacing this rotating shaft rotational travel is used to measure described bearing 11 and drives the measurement of angle device 9 that produces the anglec of rotation by pendulum body 12; Because it is affixed with it that pendulum body 12 is set on the bearing 11,, measure the angle that described bearing 11 rotation angle equal to measure 12 rotations of pendulum body so the angle that bearing 11 rotates is identical with the angle of pendulum body 12 rotations;
In this embodiment, pendulum body 12 comprises: be set on this bearing 11, the fork 121 affixed with it, be connected these fork 121 tail ends and be used to impact the impact head 14 of described chair headrest (not shown), described impact head 14 is a semisphere impact head 14, and described pendulum body 12 is provided with balancing weight 24; According to the computing formula of impacting effective mass in the experiment: M=mL/a; Wherein, M impacts effective mass, for a is a distance between center of percussion and the rotating shaft core, L is the distance between the pendulum body weight heart and the rotating shaft core, and m is the gross mass of pendulum body, wherein, m, a are definite value when the pendulum body is selected, in order to reach the impact effective mass M that experiment needs, need balancing weight be set on the pendulum body and regulate its center of gravity, promptly adjust the L value, satisfy experimental requirements.
In this embodiment, stop means 13 is for being arranged on the air disc brake 13 on the bearing 11; Employing air disc brake 13 after pendulum body 12 is finished impact output, with its braking, has been eliminated owing to chair headrest may bring pendulum body 12 huge bounce-back energy and has been produced action danger.
Described impact head 14 diameters are 165mm, and its effective mass is 6.8kg.
In this embodiment, measurement of angle device 9 is the real axis scrambler 9 that is connected by the shaft coupling (not shown) with bearing 11; The angle of setting under the pendulum body 12 free suspension statuses is 0 °, and the start angle of its freely falling body is Ω; When pendulum is got back to 0 ° of position by the Ω pendulum, potential energy is converted into kinetic energy fully, at this moment read instantaneous angular velocity omega by scrambler, conversion formula v=ω .r according to angle, linear velocity, wherein r is the distance of rotating shaft center and rum point) can calculate impact velocity v, and then can give the freely falling body pin-point accuracy location of pendulum body at different requirement of experiment.
In this embodiment, fork lifting gear 7 comprises: the holder 8 that is used for the described pendulum body 12 of clamping, be used to drive the power spare 20 that this holder 8 promotes, be arranged between this power spare 20 and holder 8, be used for the transmission component of this power spare outputting power of transmission.
In this embodiment, described holder 8 be can the described pendulum body 12 of adhesive electromagnet 8; Described power spare 20 is a stepper motor 20; Described transmission component comprises and the cylinder 21 of power output shaft 201 interlock of this stepper motor 20 that two ends are connected to wire rope 22 between cylinder 21 and the electromagnet 8, and the pulley blocks 23 that is connected 8 of described cylinder 21 and electromagnet by this wire rope 22.
Described experiment table base 1 is for having the cast iron platform of T type locating slot 111; Adopt cast iron platform to make the experiment table base, the enormous impact that produces in the time of can absorbing the pendulum bump preferably, the security and stability of raising equipment, T locating slot 111 structures of experiment table base also are convenient to the adjusting of seat mount position.
Be provided with safty shield 2 around the described experiment table; By safty shield 2 is set, can prevent to be flown out by the alluvium accident, further improved device '.
The embodiment of the above is a better embodiment of the present utility model, is not to limit concrete practical range of the present utility model with this, and the equivalence that all shapes according to the utility model, structure are done changes all in protection domain of the present utility model.
Claims (10)
1. chair headrest impact experiment platform, it comprises: the experiment table base, be arranged on seat mount on this experiment table base, that be used to install automotive seat, be connected the column on this experiment table base, it is characterized in that: also comprise: the elevating mechanism that is connected on this column, can axially moves back and forth along this column is connected by this elevating mechanism with this elevating mechanism and drives the force application mechanism that moves, be used for applying to chair headrest impulsive force.
2. a kind of chair headrest impact experiment platform according to claim 1, it is characterized in that: described force application mechanism comprises: be used for applying to chair headrest the pendulum movement device of impulsive force, be used to provide the fork lifting gear of this pendulum movement device work potential.
3. a kind of chair headrest impact experiment platform according to claim 2, it is characterized in that: described elevating mechanism comprises: the guide rail mechanism that is connected on the column, axially moves back and forth along this column, be connected the lifting cantilever on this guide rail mechanism, be used to drive the lifting power unit that this lifting cantilever slides on guide rail mechanism, be arranged between this lifting power unit and lifting cantilever, be used for the gear unit of this lifting power unit outputting power of transmission.
4. a kind of chair headrest impact experiment platform according to claim 3, it is characterized in that: described guide rail mechanism is the secondary mechanism of slide block guide rail, comprise being arranged on the guide rail of column on axially, with the slide block that this guide rail is slidingly matched, this slide block and described lifting cantilever removably connect; Described lifting power unit is the lifting motor reductor that is arranged on the column top; The described gear unit feed screw nut pair mechanism that this lifting motor reductor drives that serves as reasons comprises the screw mandrel with this lifting motor braking maneuver power output shaft interlock, is detachably connected on the described lifting cantilever and this wire rod thread nut engaged.
5. a kind of chair headrest impact experiment platform according to claim 4, it is characterized in that: described pendulum movement device comprises: the bearing seat that is connected with described lifting cantilever, the bearing that be set on this bearing seat, is rotatably assorted with it, be set on this bearing, the pendulum body affixed with it, be used for the stop means of spacing this rotating shaft rotational travel.
6. a kind of chair headrest impact experiment platform according to claim 5, it is characterized in that: described pendulum movement device comprises: be used to measure described bearing and driven the measurement of angle device that produces the anglec of rotation by the pendulum body.
7. a kind of chair headrest impact experiment platform according to claim 5, it is characterized in that: described pendulum body comprises: be set on this bearing, the fork affixed with it, be connected the impact head that this fork tail end is used to impact described chair headrest, described impact head is the semisphere impact head, and described pendulum body is provided with balancing weight.
8. a kind of chair headrest impact experiment platform according to claim 7, it is characterized in that: described impact head is provided with acceleration transducer.
9. a kind of chair headrest impact experiment platform according to claim 7, it is characterized in that: described fork lifting gear comprises: the holder that is used for the described pendulum body of clamping, be used to drive the power spare that this holder promotes, be arranged between this power spare and holder, be used for the transmission component of this power spare outputting power of transmission.
10. a kind of chair headrest impact experiment platform according to claim 7 is characterized in that: be provided with safty shield around the described experiment table.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201961961U CN201145635Y (en) | 2007-12-20 | 2007-12-20 | Chair headrest impact experimental bench |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201961961U CN201145635Y (en) | 2007-12-20 | 2007-12-20 | Chair headrest impact experimental bench |
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| Publication Number | Publication Date |
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| CN201145635Y true CN201145635Y (en) | 2008-11-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNU2007201961961U Expired - Fee Related CN201145635Y (en) | 2007-12-20 | 2007-12-20 | Chair headrest impact experimental bench |
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| CN101943645A (en) * | 2010-08-07 | 2011-01-12 | 常州亿晶光电科技有限公司 | Lifting device for bursting test of solar module |
| CN102252817A (en) * | 2010-04-20 | 2011-11-23 | 刘光镐 | Shock device and safety cap shock test machine |
| CN102680199A (en) * | 2012-05-22 | 2012-09-19 | 奇瑞汽车股份有限公司 | System and method for calibrating impact on feet of dummy for automobile collision |
| CN102980735A (en) * | 2012-11-15 | 2013-03-20 | 长春富维-江森自控汽车饰件系统有限公司 | Impact testing device of protecting board of automobile seat |
| CN102980736A (en) * | 2012-11-22 | 2013-03-20 | 三峡大学 | Aircraft seat head collision experiment device |
| CN102980734A (en) * | 2012-11-15 | 2013-03-20 | 长春富维-江森自控汽车饰件系统有限公司 | Impact testing method of protecting board of automobile seat |
| CN103257084A (en) * | 2013-05-14 | 2013-08-21 | 广州华德汽车弹簧有限公司 | Lifting device suitable for fatigue test of torsion rod spring of car trunk lid |
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| CN104502091A (en) * | 2015-01-16 | 2015-04-08 | 中国工程物理研究院总体工程研究所 | Temperature field grid shelf dynamic buckling integration test apparatus |
| CN104941164A (en) * | 2014-03-28 | 2015-09-30 | 上海体育学院 | Pendulum bob capable of adjusting and testing impact strength |
| CN105444976A (en) * | 2015-11-30 | 2016-03-30 | 芜湖普威技研有限公司 | Anti-collision performance detection apparatus for anti-collision beam |
| CN106289701A (en) * | 2016-08-04 | 2017-01-04 | 南通市通润汽车零部件有限公司 | A kind of detecting system of auxiliary brake |
| CN108627351A (en) * | 2018-03-31 | 2018-10-09 | 重庆长安汽车股份有限公司 | A kind of dynamic test system of car seat headrest energy absorption capacity and pressure distribution |
| CN109459203A (en) * | 2018-12-17 | 2019-03-12 | 浙江永信检测技术有限公司 | A kind of outdoor lie fallow article Dynamic impact fatigue detection device |
| CN109974958A (en) * | 2019-03-25 | 2019-07-05 | 昆山顺扬工业成套设备有限公司 | High-precision impact test machine |
| CN112051021A (en) * | 2020-09-15 | 2020-12-08 | 哈尔滨三迪工控工程有限公司 | Pneumatic servo linear impact emitter |
| CN117647456A (en) * | 2024-01-30 | 2024-03-05 | 牡丹江师范学院 | Multi-mode adjusting type impact-resistant testing device for tennis training wall |
| CN117647456B (en) * | 2024-01-30 | 2024-04-30 | 牡丹江师范学院 | Multi-mode adjusting type impact-resistant testing device for tennis training wall |
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| CN102252817A (en) * | 2010-04-20 | 2011-11-23 | 刘光镐 | Shock device and safety cap shock test machine |
| CN102252817B (en) * | 2010-04-20 | 2014-06-11 | 刘光镐 | Shock device and safety cap shock test machine |
| CN101943645A (en) * | 2010-08-07 | 2011-01-12 | 常州亿晶光电科技有限公司 | Lifting device for bursting test of solar module |
| CN102680199B (en) * | 2012-05-22 | 2015-04-08 | 奇瑞汽车股份有限公司 | System and method for calibrating impact on feet of dummy for automobile collision |
| CN102680199A (en) * | 2012-05-22 | 2012-09-19 | 奇瑞汽车股份有限公司 | System and method for calibrating impact on feet of dummy for automobile collision |
| CN102980735A (en) * | 2012-11-15 | 2013-03-20 | 长春富维-江森自控汽车饰件系统有限公司 | Impact testing device of protecting board of automobile seat |
| CN102980734A (en) * | 2012-11-15 | 2013-03-20 | 长春富维-江森自控汽车饰件系统有限公司 | Impact testing method of protecting board of automobile seat |
| CN102980736A (en) * | 2012-11-22 | 2013-03-20 | 三峡大学 | Aircraft seat head collision experiment device |
| CN102980736B (en) * | 2012-11-22 | 2015-06-17 | 三峡大学 | Aircraft seat head collision experiment device |
| CN103257084A (en) * | 2013-05-14 | 2013-08-21 | 广州华德汽车弹簧有限公司 | Lifting device suitable for fatigue test of torsion rod spring of car trunk lid |
| CN103257084B (en) * | 2013-05-14 | 2015-08-05 | 广州华德汽车弹簧有限公司 | Be applicable to the pulling apparatus of car tail cover torsion-bar spring torture test |
| CN103712810A (en) * | 2013-11-18 | 2014-04-09 | 国家电网公司 | Low voltage metering box IK level and manipulator detection platform |
| CN104941164A (en) * | 2014-03-28 | 2015-09-30 | 上海体育学院 | Pendulum bob capable of adjusting and testing impact strength |
| CN104155076B (en) * | 2014-07-07 | 2016-07-27 | 中国矿业大学 | A kind of working platform type ultromotivity hammer device and method |
| CN104155076A (en) * | 2014-07-07 | 2014-11-19 | 中国矿业大学 | Workbench-type automatic power hammer device and using method thereof |
| CN104502091A (en) * | 2015-01-16 | 2015-04-08 | 中国工程物理研究院总体工程研究所 | Temperature field grid shelf dynamic buckling integration test apparatus |
| CN105444976A (en) * | 2015-11-30 | 2016-03-30 | 芜湖普威技研有限公司 | Anti-collision performance detection apparatus for anti-collision beam |
| CN106289701A (en) * | 2016-08-04 | 2017-01-04 | 南通市通润汽车零部件有限公司 | A kind of detecting system of auxiliary brake |
| CN108627351A (en) * | 2018-03-31 | 2018-10-09 | 重庆长安汽车股份有限公司 | A kind of dynamic test system of car seat headrest energy absorption capacity and pressure distribution |
| CN108627351B (en) * | 2018-03-31 | 2019-10-08 | 重庆长安汽车股份有限公司 | A kind of dynamic test system of car seat headrest energy absorption capacity and pressure distribution |
| CN109459203A (en) * | 2018-12-17 | 2019-03-12 | 浙江永信检测技术有限公司 | A kind of outdoor lie fallow article Dynamic impact fatigue detection device |
| CN109974958A (en) * | 2019-03-25 | 2019-07-05 | 昆山顺扬工业成套设备有限公司 | High-precision impact test machine |
| CN112051021A (en) * | 2020-09-15 | 2020-12-08 | 哈尔滨三迪工控工程有限公司 | Pneumatic servo linear impact emitter |
| CN117647456A (en) * | 2024-01-30 | 2024-03-05 | 牡丹江师范学院 | Multi-mode adjusting type impact-resistant testing device for tennis training wall |
| CN117647456B (en) * | 2024-01-30 | 2024-04-30 | 牡丹江师范学院 | Multi-mode adjusting type impact-resistant testing device for tennis training wall |
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