CN110631798B - Flexible universal overload product for impact test - Google Patents

Flexible universal overload product for impact test Download PDF

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Publication number
CN110631798B
CN110631798B CN201911058582.8A CN201911058582A CN110631798B CN 110631798 B CN110631798 B CN 110631798B CN 201911058582 A CN201911058582 A CN 201911058582A CN 110631798 B CN110631798 B CN 110631798B
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China
Prior art keywords
impact
universal
overload
general
straight cylinder
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CN201911058582.8A
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CN110631798A (en
Inventor
丁文丽
于格
王�华
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Beijing Xinghang Electromechanical Equipment Co Ltd
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Beijing Xinghang Electromechanical Equipment Co Ltd
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M7/00Vibration-testing of structures; Shock-testing of structures
    • G01M7/08Shock-testing

Abstract

The invention provides a flexible general overload product for an impact test, which comprises a general section, a general connecting flange, a balancing weight and a process booster; each universal section is in a form that flanges are welded at two ends of the straight cylinder section, and the flexible universal overload product is composed of a plurality of universal sections; all the universal sections are connected through a universal connecting flange, and the balancing weight is arranged on the straight cylinder section; the process booster is connected with the general section and is used for carrying out impact collision with the waveform generator of the base of the impact test bed to form impact load. The invention adopts a modularized flexible tool butt joint scheme, can effectively guide the impact overload test of model products, achieves the effect of one-purpose and multi-purpose tool, saves the production period and improves the production efficiency. The model impact excitation condition obtained by the station regulation of the invention can ensure that the impact of the model product is smoothly carried out and the requirement of the impact test of the model product is met.

Description

Flexible universal overload product for impact test
Technical Field
The invention belongs to the technical field of product environment tests, and particularly relates to a flexible universal overload product for an impact test.
Background
The purpose of the model product impact test is to test the appearance structure of the product and the adaptability of equipment on the product to the transient environment generated at the specific moment of ignition of the booster, test the working correctness and coordination of the equipment on the product under the impact environment, test the connection condition of a cable and an electric connector on the product, and test the process quality of the model product structure and equipment installation.
The impact overload test of model products is generally carried out on an impact overload test bed. For heavy-duty products, an impact overload test bed generally adopts a braking principle, and the basic principle is that a slope slideway is utilized to accelerate the products to a required mutual collision speed, the products collide with a waveform generator, the waveform generator plays a role of a braking piece, the initial speed of the products is reduced to zero instantly, reverse acceleration is provided for the test piece products, impact load is formed, and therefore overload performances such as the capability of resisting the damage of a single large impact value of the products are detected.
The model product is assembled by parts made of different materials, the dynamic response difference of each structure is extremely large under the action of external load, and finally, an extremely complex mechanical phenomenon is shown, and the later result is not completely controllable, so that the impact overload test can cause potential damage to the product, and the impact test of the model product is carried out once. In order to reduce the damage degree to the minimum, the overload model bullet is used for impact debugging before the impact overload test at the present stage so as to obtain reasonable test excitation conditions. Along with the increase of the complexity and the structure size of the product, the manufacturing period and the cost of the simulation bomb are also obviously increased, and the design of the product is changed more in the development stage, which also leads to the increase of the manufacturing difficulty of the simulation product.
How to obtain the impact excitation condition with high accuracy, can also reduce manufacturing cycle and cost on the impact model product, design flexible impact overload product frock, replace various types of product and accomplish the work of shocking and transferring the platform, become the problem that present stage was the most urgent solution.
Disclosure of Invention
Technical problem to be solved
The invention provides a flexible universal overload product for an impact test, which aims to solve the technical problem of a primary impact model product of the current model product.
(II) technical scheme
In order to solve the technical problem, the invention provides a flexible general overload product for an impact test, which comprises a general section, a general connecting flange, a balancing weight and a process booster; each universal section is in a form that flanges are welded at two ends of the straight cylinder section, and the flexible universal overload product is composed of a plurality of universal sections; all the universal sections are connected through a universal connecting flange, and the position of the universal connecting flange is consistent with the supporting position of a product; the balancing weight is arranged on the straight cylinder section; the process booster is connected with the general section and is used for carrying out impact collision with the waveform generator of the base of the impact test bed to form impact load.
Further, the straight barrel sections of the plurality of general sections are the same or different in length.
Furthermore, a lifting point is arranged on the universal connecting flange.
Further, a plurality of clump weights are installed on the plurality of straight cylinder sections.
Furthermore, a plurality of threaded holes are distributed on the straight cylinder section and used for mounting a balancing weight; a plurality of threaded holes corresponding to the straight cylinder sections are formed in the balancing weight.
Further, a plurality of threaded holes are distributed on the straight cylinder section at 45 degrees, 135 degrees, 225 degrees and 315 degrees.
Furthermore, the balancing weight is composed of two semi-ring structures, and the diameter of the inner circle of the balancing weight is the same as the outer diameter of the straight cylinder section.
Further, the process booster comprises a connecting rod, a base body and an impact shaft; wherein, the both ends of connecting rod are connected with general section and base member respectively, and the both ends of base member are connected with connecting rod and impact shaft respectively.
(III) advantageous effects
The invention provides a flexible general overload product for an impact test, which comprises a general section, a general connecting flange, a balancing weight and a process booster; each universal section is in a form that flanges are welded at two ends of the straight cylinder section, and the flexible universal overload product is composed of a plurality of universal sections; all the universal sections are connected through a universal connecting flange, and the position of the universal connecting flange is consistent with the supporting position of a product; the balancing weight is arranged on the straight cylinder section; the process booster comprises a connecting rod, a base body and an impact shaft, wherein two ends of the connecting rod are respectively connected with the universal section and the base body, two ends of the base body are respectively connected with the connecting rod and the impact shaft, and the process booster is used for carrying out impact collision with a waveform generator of a base of an impact test bed to form an impact load.
The invention adopts a modularized flexible tool butt joint scheme, can effectively guide the impact overload test of model products, solves the current situation that one model product is in one state and one impact test tool is in one state, breaks through the idea of original tool design, achieves the effect of one tool with multiple functions, saves the production period and improves the production efficiency. The model impact excitation condition obtained by the station regulation of the invention can ensure that the impact of the model product is smoothly carried out and the requirement of the impact test outline of the model product is met.
Drawings
FIG. 1 is a schematic structural outline of a flexible general overload product according to an embodiment of the invention;
FIG. 2 is a cross-sectional view of a flexible universal overload product according to an embodiment of the invention;
FIG. 3 is a block diagram illustrating a generic segment structure according to an embodiment of the present invention;
FIG. 4 is a schematic view of a flange structure according to an embodiment of the present invention;
fig. 5 is a schematic view of a counterweight block according to an embodiment of the invention.
Detailed Description
In order to make the objects, contents and advantages of the present invention clearer, the following detailed description of the embodiments of the present invention will be made in conjunction with the accompanying drawings and examples.
The present embodiment proposes a flexible universal overload product for impact test, as shown in fig. 1 and 2, which mainly comprises a universal section 1, a universal connecting flange 2, a counterweight 3 and a process booster 4.
As shown in fig. 3, the universal section 1 is in the form of flanges 6 (shown in fig. 4) welded to both ends of the straight cylindrical section 5. In order to meet the requirements of different types of product lengths, the required product length and the supportable position are formed by a plurality of straight cylinder sections 5 with the same or different lengths.
The universal sections 1 are connected through the universal connecting flange 2, and the position of the universal connecting flange 2 is consistent with the supportable position of a product. The universal attachment flange 2 may be provided with lifting points.
The quality and the barycenter position of different model products are all different, consequently the quality and the barycenter position of different model products are transferred out through balancing weight 3 of different quality. The balancing weight 3 is installed on general section 1. A plurality of threaded holes are distributed at 45 degrees, 135 degrees, 225 degrees and 315 degrees on the straight cylinder section 5 of the general section 1 and used for installing the balancing weight 3, the balancing weight 3 consists of two semi-ring structures, the diameter of the inner circle of the balancing weight 3 is the same as the outer diameter of the straight cylinder section 5, the balancing weight 3 is provided with a plurality of threaded holes corresponding to the straight cylinder section 5, and the structure is shown in fig. 5.
The process booster 4 comprises a connecting rod, a base body and an impact shaft. Wherein, the both ends of connecting rod are connected with general section 1 and base member respectively, and the both ends of base member are connected with connecting rod and impact shaft respectively. The process booster 4 is used for carrying out impact collision with the waveform generator of the base of the impact test bed to form impact load.
The process flow of the flexible impact overload test is as follows: after the test requirements of the model products are issued, setting a preliminary test scheme according to the product characteristics and the test requirements, designing an impact tool, obtaining an impact excitation condition by an impact adjusting table, and finally performing an impact test of the product. The impact debugging process is crucial, and the debugging aims to obtain the impact excitation condition required by the impact test outline of the model product and ensure that the impact examination of the formal product meets the requirement of the impact outline. The overload product replaces the formal product to confirm the impact excitation condition, so the overload product needs to be close to the mass center of mass of the formal product so as to obtain the most accurate impact excitation condition.
The length and the general mass of a flexible general overload product are controlled through the general section 1, the mass center and the fine adjustment of the mass of the product are adjusted by the aid of the balancing weight 3, the overload product is enabled to be close to the mass center of the formal product by the aid of a modularized assembly mode of the overload product to simulate the formal product, and an impact adjusting platform is carried out on a general pulley to obtain an impact excitation condition for guiding an impact test of the formal product, so that the impact test can meet requirements of an impact test outline.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.

Claims (1)

1. A flexible general overload product for an impact test is characterized by comprising a general section, a general connecting flange, a balancing weight and a process booster; each universal section is in a form that flange plates are welded at two ends of a straight cylinder section, and the flexible universal overload product is composed of a plurality of universal sections; all the universal sections are connected through the universal connecting flange, and the position of the universal connecting flange is consistent with the supporting position of a product; the balancing weight is arranged on the straight cylinder section; the process booster is connected with the general section and is used for carrying out impact collision with a waveform generator of a base of an impact test bed to form an impact load; the lengths of the straight barrel sections of the plurality of universal sections are the same or different; the universal connecting flange is provided with a lifting point; a plurality of said clump weights are mounted on a plurality of said straight cylinder sections; a plurality of threaded holes are distributed in the straight cylinder section and used for mounting the balancing weight; a plurality of threaded holes corresponding to the straight cylinder section are formed in the balancing weight, and a plurality of threaded holes are distributed in the straight cylinder section at 45 degrees, 135 degrees, 225 degrees and 315 degrees; the counterweight block consists of two semi-ring structures, and the diameter of the inner circle of the counterweight block is the same as the outer diameter of the straight cylinder section; the process booster comprises a connecting rod, a base body and an impact shaft; the two ends of the connecting rod are respectively connected with the universal section and the base body, and the two ends of the base body are respectively connected with the connecting rod and the impact shaft.
CN201911058582.8A 2019-11-01 2019-11-01 Flexible universal overload product for impact test Active CN110631798B (en)

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Application Number Priority Date Filing Date Title
CN201911058582.8A CN110631798B (en) 2019-11-01 2019-11-01 Flexible universal overload product for impact test

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Application Number Priority Date Filing Date Title
CN201911058582.8A CN110631798B (en) 2019-11-01 2019-11-01 Flexible universal overload product for impact test

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CN110631798B true CN110631798B (en) 2021-07-02

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Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103344402A (en) * 2013-06-27 2013-10-09 南京航空航天大学 Gradation loading impact test device and impact method thereof
CN204594650U (en) * 2015-03-31 2015-08-26 沈阳工业大学 A kind of counterweight device of bearing class impulse test system
CN105157896A (en) * 2015-06-03 2015-12-16 中国人民解放军装备学院 Variable-range thrust measuring device applicable to microminiature thruster
CN107328543A (en) * 2017-08-25 2017-11-07 南京苏试广博环境可靠性实验室有限公司 Shock table
CN107389290A (en) * 2017-07-13 2017-11-24 西安空间无线电技术研究所 A kind of impact test adjustable analogue means of quality rigidity
CN207779660U (en) * 2017-12-22 2018-08-28 西安东仪综合技术实验室有限责任公司 A kind of impact amplifier
CN108827582A (en) * 2018-08-24 2018-11-16 中北大学 A kind of high-magnitude head-on collision shock table
CN109506874A (en) * 2018-11-26 2019-03-22 西北工业大学 Shock response spectrum experimental rig and test method based on elastic stress wave load
CN110207923A (en) * 2019-06-21 2019-09-06 江西洪都航空工业集团有限责任公司 A kind of improved method for the fixed device of shock table boost motor

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103344402A (en) * 2013-06-27 2013-10-09 南京航空航天大学 Gradation loading impact test device and impact method thereof
CN204594650U (en) * 2015-03-31 2015-08-26 沈阳工业大学 A kind of counterweight device of bearing class impulse test system
CN105157896A (en) * 2015-06-03 2015-12-16 中国人民解放军装备学院 Variable-range thrust measuring device applicable to microminiature thruster
CN107389290A (en) * 2017-07-13 2017-11-24 西安空间无线电技术研究所 A kind of impact test adjustable analogue means of quality rigidity
CN107328543A (en) * 2017-08-25 2017-11-07 南京苏试广博环境可靠性实验室有限公司 Shock table
CN207779660U (en) * 2017-12-22 2018-08-28 西安东仪综合技术实验室有限责任公司 A kind of impact amplifier
CN108827582A (en) * 2018-08-24 2018-11-16 中北大学 A kind of high-magnitude head-on collision shock table
CN109506874A (en) * 2018-11-26 2019-03-22 西北工业大学 Shock response spectrum experimental rig and test method based on elastic stress wave load
CN110207923A (en) * 2019-06-21 2019-09-06 江西洪都航空工业集团有限责任公司 A kind of improved method for the fixed device of shock table boost motor

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