CN111458094A - Pendulum impact test table surface structure with lubricating guide rail device - Google Patents
Pendulum impact test table surface structure with lubricating guide rail device Download PDFInfo
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- CN111458094A CN111458094A CN202010294674.2A CN202010294674A CN111458094A CN 111458094 A CN111458094 A CN 111458094A CN 202010294674 A CN202010294674 A CN 202010294674A CN 111458094 A CN111458094 A CN 111458094A
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- guide rail
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/08—Shock-testing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25H—WORKSHOP EQUIPMENT, e.g. FOR MARKING-OUT WORK; STORAGE MEANS FOR WORKSHOPS
- B25H1/00—Work benches; Portable stands or supports for positioning portable tools or work to be operated on thereby
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- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a pendulum impact test bed table-board structure with a lubricating guide rail device, which comprises an impact bed table-board, table-board guide rails and a table-board base, wherein two sets of table-board guide rails are symmetrically arranged at the top of the table-board base, lubricating grooves are formed in the tops of the two sets of table-board guide rails, the table-board guide rails are arranged on the tops of the table-board base above the two sets of table-board guide rails, and guide grooves are fixedly connected to the two sides of the bottom of the table-board guide rails above the lubricating grooves. According to the guide rail device, firstly, the probability of looseness and breakage of the guide rail fastening screw is reduced, the test efficiency is improved, the probability of looseness and cutting of the screw is reduced, the maintenance frequency can be reduced, the test efficiency is improved, secondly, the assembly design between the guide rails is more reasonable, the assembly and disassembly are more convenient, finally, the lubrication between the guide rail devices is more sufficient, the abrasion is reduced, and meanwhile, the repeatability and the stability of the table top are improved.
Description
Technical Field
The invention relates to the technical field of spacecraft dynamics tests, in particular to a pendulum impact test table top structure with a lubricating guide rail device.
Background
Spacecraft products, from development, transportation, launch to the end of flight, will experience a variety of complex impact environments throughout their life cycle, such as segment separation, equipment actuation, and the like. During the impact process, external energy is instantaneously transmitted to the spacecraft and parts thereof, and the sudden changes of the generated displacement, speed and acceleration may cause damage and faults of the spacecraft structure, instruments and other parts, thereby causing the spacecraft to be incapable of working normally. If the ground simulation test is not sufficiently performed, the spacecraft is hidden to the sky, and huge casualties and serious damage to equipment can be caused, so that the spacecraft product must be verified by the sufficient simulation test in the development process, the success rate of the developed product is ensured, and the loss of personnel and property is reduced. Therefore, the spacecraft, various devices on the spacecraft and various products need to carry out explosion impact environment simulation tests on the ground. Pendulum impact tables are one of the main types of equipment that perform impact response spectroscopy tests and have been widely used in production in various industries.
The table top system in the pendulum impact test system is used for mounting a test piece and mainly comprises a table top, accessories of the table top and a guide rail device. After the pendulum bob impacts the table board, the test piece is driven to move, the table board impacts an elastic buffer on a base of the test table to generate impact waveforms, the impact waveforms are important components of an impact test system, and the impact test result is directly influenced by the performance of the table board system.
Through long-time test practice, some problems and defects of the original pendulum impact test system are found, and the method is specifically as follows:
(1) the assembly and fixation mode of the table top and the table top guide rail is insufficient, and the number of screws is small, so that the screws are easy to loosen and even break;
the assembly and fixation mode of the table-board and the table-board guide rail is flat surface screw fixation, and screws for fixing the table-board and the table-board guide rail are easy to loosen or break. After long-time impact (especially when the magnitude is more than 2000 g), the screw is easy to loosen and sometimes even break, the maintenance frequency is high, and the test efficiency is influenced.
(2) The assembly design of the table top guide rail and the table body guide rail is not reasonable enough, time and labor are wasted in the maintenance, disassembly and assembly processes, and the working efficiency is influenced.
The stage body guide rail is horizontal V type groove design, installs on the base inboard facade of pendulum towards testing machine, need lift up the mesa level with four people when installing horizontal mesa, and will keep certain depth of parallelism and levelness with the stage body guide rail, just can push the stage body guide rail after the front end accurate alignment of stage body guide rail in, need can successfully pack into after aligning several times when loading and unloading at every turn, wastes time and energy in the operation, seriously influences the installation effectiveness.
(3) The lubrication between the guide rails is insufficient, and the repeatability and the stability of the test are poor;
the platform body guide rail is designed into a transverse V-shaped groove and is arranged on the vertical surface of the inner side of the base of the swing impact testing machine, lubricating oil is coated on the contact surface (in the V-shaped groove) of the platform body guide rail and the platform surface guide rail, and then the combined body of the platform surface and the platform surface guide rail of the impact platform is pushed into the platform body guide rail. Because the table body guide rail is designed by the transverse V-shaped groove, after the table top moves for a period of time, lubricating oil between the table body guide rail and the table top guide rail gradually flows downwards to reduce, the friction force is increased, the guide rail is easy to loosen, the boundary condition cannot be fixed, the repeatability and the stability of the test are poor (the probability that a control spectrum exceeds a tolerance zone of +/-6 dB is greater than 15%), and the test difficulty is increased. At this time, the table top needs to be detached, lubricating oil needs to be refilled, and guide rail screws need to be fastened, so that the test efficiency is seriously influenced.
Disclosure of Invention
The invention aims to: in order to solve traditional pendulum impact test platform mesa structure, the assembly fixed mode of mesa and mesa guide rail exists not enoughly, and the screw is small in quantity is not hard up easily and is split even, the assembly design of mesa guide rail and stage body guide rail is reasonable inadequately, it wastes time and energy to maintain the dismouting in-process, influence work efficiency, lubrication between the guide rail is abundant inadequately, the relatively poor problem of experimental repeatability and stability, and the pendulum impact test platform mesa structure who has lubricated guide rail device that proposes.
In order to achieve the purpose, the invention adopts the following technical scheme:
pendulum impact test platform mesa structure with lubricated guide device, including strikeing platform mesa, mesa guide rail and stage body base, two sets of stage body guide rails are installed to the top symmetry of stage body base, and the lubrication groove has all been seted up at the top of two sets of stage body guide rails, the top that the top of stage body base is located two sets of stage body guide rails is provided with the mesa guide rail, and the bottom both sides of mesa guide rail are located the top fixedly connected with guide way of lubrication groove, one side that the outside of two sets of stage body guide rails is close to the guide way closes soon and is connected with the location guide screw that is horizontal distribution, fastening screw fixedly connected with strikes the platform mesa is passed through at the top of mesa guide rail.
As a further description of the above technical solution:
the table top of the impact table is forged by a high-strength duralumin material, but is not limited to the high-strength duralumin material.
As a further description of the above technical solution:
the two sets of table body guide rails are of inverted L-shaped structures, first adjusting screws are connected between the horizontal ends of the two sets of table body guide rails and the table body base in a screwing mode, and second adjusting screws are connected between the vertical ends of the two sets of table body guide rails and the table body base in a screwing mode.
As a further description of the above technical solution:
and steel wire thread sleeves are embedded in threaded holes connected with the table top of the impact table, the table top guide rail and the table body guide rail and are fixedly sealed by epoxy glue.
As a further description of the above technical solution:
and the table top guide rail and the table body guide rail are subjected to quenching and tempering by No. 45 steel and are blackened.
As a further description of the above technical solution:
and anti-loosening elastic pads are sleeved outside the positioning guide screw, the first adjusting screw, the second adjusting screw and the fastening screw.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:
1. according to the invention, through a fixing mode that the fixing structure of the table top and the table top guide rail is changed from a flat surface design to a stepped surface design, when an impact test is carried out, most of impact force generated by the hammer head impacting the table top is transmitted to the table top guide rail through the stepped surface, so that the stress intensity of the guide rail screws is reduced, and the number of the mounting screws for fixing the table top guide rail is increased from 10 to 22, thereby reducing the probability of loosening and cutting of the screws, reducing the maintenance frequency, improving the test efficiency, reducing the probability of loosening and breaking of the guide rail fastening screws, and improving the test efficiency.
2. In the invention, the labor cost and the assembly time are reduced by improving the assembly design among the guide rails. When mesa or guide rail device need dismantle the maintenance, only need tear guide positioning screw open, two people lift up the mesa perpendicularly or take one's place and can accomplish, very big shortening the assemble duration, the assembly design between the guide rail is more reasonable, and the dismouting is more convenient.
3. According to the invention, the horizontal V-shaped groove assembly design of the table guide rail and the table guide rail is changed into the horizontal flat-bottom groove assembly design, so that lubricating oil between the table guide rail and the table guide rail cannot flow downwards along the inclined surface of the guide rail along with the friction of the guide rail and the change of time, the lubricating oil can be ensured to be constantly and quantitatively retained in the lubricating groove of the table guide rail, the lubricating oil is convenient to add, the oil quantity is clear at a glance, the labor and time cost caused by the lubricating oil filling of the guide rail device is saved, the phenomenon of unstable table due to the increase of friction force caused by the reduction of the lubricating oil between the guide rails is reduced, the table is ensured to move freely, the repeatability and the stability of the table can be improved, the lubrication between the guide rail devices is more sufficient, the abrasion is reduced, and the repeatability and.
Drawings
FIG. 1 is a schematic block diagram of the structure of a pendulum impact test bed table structure with a lubricated rail assembly according to the present invention;
FIG. 2 is a cross-sectional view of section A-A of the present invention;
FIG. 3 is a cross-sectional view of the assembly of the deck and the deck rail of section B-B of the present invention;
fig. 4 is a bottom view of the table top and table top rail assembly of the present invention.
Illustration of the drawings:
1. a table top of the impact table; 2. a table top guide rail; 3. a stage body guide rail; 4. positioning the guide screw; 5. a first adjustment screw; 6. a second adjustment screw; 7. a table body base.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
Referring to fig. 1-4, the present invention provides a technical solution: the table-board structure of the pendulum impact test table with a lubricating guide rail device comprises an impact table board 1, a table-board guide rail 2, a table-board guide rail 3 and a table-board base 7, wherein two sets of table-board guide rails 3 are symmetrically arranged at the top of the table-board base 7, lubricating grooves are arranged on the tops of the two sets of table body guide rails 3, the table top guide rails 2 are arranged on the tops of the table body bases 7 above the two sets of table body guide rails 3, and the bottom both sides of mesa guide rail 2 are located the top fixedly connected with guide way of lubrication groove, and one side that the outside of two sets of stage body guide rails 3 is close to the guide way closes soon and is connected with the positioning guide screw 4 that is horizontal distribution, and fastening screw fixedly connected with strikes platform mesa 1 through the top of mesa guide rail 2, the setting of lubrication groove and guide way, the joining of the lubricating oil of being convenient for on the one hand, on the other hand has promoted the stability of complex between mesa guide rail 2 and the stage body guide rail 3.
Example 2
Specifically, as shown in fig. 1-4, the impact table top 1 is forged from a high-strength duralumin material, but is not limited to the high-strength duralumin material, the high-strength duralumin material is selected, the strength of the impact table top 1 is improved, the quality of the impact table top 1 is reduced, two sets of table body guide rails 3 are in an inverted L type structure, horizontal ends of the two sets of table body guide rails 3 and a table body base 7 are connected with a first adjusting screw 5 in a screwing manner, vertical ends of the two sets of table body guide rails 3 and the table body base 7 are connected with a second adjusting screw 6 in a screwing manner, the first adjusting screw 5 and the second adjusting screw 6 are arranged, the stability of fixing between the table body guide rails 3 and the table body base 7 is comprehensively improved, the impact table top 1, threaded holes connected with the table body guide rails 2 and the table body guide rails 3 are embedded with steel wire thread sleeves and fixedly sealed with epoxy glue, the structure is arranged, the tightness and the tightness of installing of the steel wire thread sleeves are improved, the table top guide rails 2 and the table body guide rails 3 are both treated with 45-grade steel wire fastening adjusting screws, the first adjusting screw 5 and the anti-vibration adjusting screw 5, the second adjusting screw 5 and the anti-vibration adjusting screw 5 are arranged, the anti-vibration adjusting cushion, the anti-vibration adjusting screw 5 and the anti-vibration adjusting screw 5 are arranged with the anti-vibration adjusting screw.
The working principle is as follows: when in use, damping pads are respectively added at the front end and the rear end of the table board 1 of the impact table, the height of the pendulum bob is adjusted, thereby the spectrum type of the impact spectrum is adjusted, a preset impact response spectrum test curve is reached, after the table guide rail 3 is fixed on the table base 7 through the first adjusting screw 5 and the second adjusting screw 6, the levelness of the table guide rail 3 and the pendulum bob is adjusted through the first adjusting screw 5 of the table guide rail 3, the parallelism of the table guide rail 3 and the pendulum bob is adjusted through the second adjusting screw 6 of the table guide rail 3, the table guide rail 2 is fixed under the table board 1 of the impact table, and a fixed torque is applied to the fastening screw, after a proper amount of lubricating oil is filled in the lubricating groove of the table guide rail 3, the combination of the table board 1 and the table guide rail 2 is placed between the two sets of table guide rails 3, the positioning guide screw 4 is fastened, the table board can move freely, after the whole adjustment, the pendulum impact test process can be performed.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (6)
1. Pendulum impact test platform mesa structure with lubricated guide device, including strikeing platform mesa, mesa guide rail and stage body base, its characterized in that, two sets of stage body guide rails are installed to the top symmetry of stage body base, and the lubrication groove has all been seted up at the top of two sets of stage body guide rails, the top that the top of stage body base is located two sets of stage body guide rails is provided with the mesa guide rail, and the bottom both sides of mesa guide rail are located the top fixedly connected with guide way of lubrication groove, one side that the outside of two sets of stage body guide rails is close to the guide way closes soon and is connected with the location guide screw that is horizontal distribution, fastening screw fixedly connected with strikes the platform mesa is passed through at the top of mesa guide rail.
2. The pendulum impact test stand deck structure with a lubricated rail device of claim 1, wherein the impact stand deck is forged from, but not limited to, a high strength duralumin material.
3. The table top structure of the pendulum impact test table with a lubricated rail device of claim 1, wherein each of the two sets of table rails is an inverted L-shaped structure, a first adjusting screw is screwed between the horizontal ends of the two sets of table rails and the table base, and a second adjusting screw is screwed between the vertical ends of the two sets of table rails and the table base.
4. The table top structure of the pendulum impact test table with the lubricating rail device as claimed in claim 1, wherein the threaded holes for connecting the table top, the table top rail and the table body rail are all embedded with steel wire thread inserts and are sealed by epoxy glue.
5. The pendulum impact test stand deck structure with a lubricated rail assembly of claim 1, wherein the deck rail and the block rail are both quenched and tempered with 45 gauge steel and blackened.
6. The table top structure of the pendulum impact test bed with a lubricated rail device of any one of claims 1 to 5, wherein the positioning guide screw, the first adjusting screw, the second adjusting screw and the fastening screw are all externally sleeved with anti-loose spring pads.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010294674.2A CN111458094A (en) | 2020-04-15 | 2020-04-15 | Pendulum impact test table surface structure with lubricating guide rail device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010294674.2A CN111458094A (en) | 2020-04-15 | 2020-04-15 | Pendulum impact test table surface structure with lubricating guide rail device |
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| Publication Number | Publication Date |
|---|---|
| CN111458094A true CN111458094A (en) | 2020-07-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010294674.2A Pending CN111458094A (en) | 2020-04-15 | 2020-04-15 | Pendulum impact test table surface structure with lubricating guide rail device |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040103713A1 (en) * | 2002-11-18 | 2004-06-03 | Voon Wong Shaw | Pendulum impact test rig |
| CN103759912A (en) * | 2014-01-07 | 2014-04-30 | 北京卫星环境工程研究所 | Pneumatic type horizontal shock platform |
| CN103983416A (en) * | 2014-06-04 | 2014-08-13 | 北京卫星环境工程研究所 | Pendulum bob shock test apparatus table board with locking guide rail device |
| CN207163802U (en) * | 2017-07-25 | 2018-03-30 | 西安东仪综合技术实验室有限责任公司 | A kind of low resistance slide rail for shock response spectrum testing stand |
| CN207205992U (en) * | 2017-08-31 | 2018-04-10 | 贵州捷盛钻具股份有限公司 | A kind of machine tool dragging plate lubrication system |
| CN207464828U (en) * | 2017-11-15 | 2018-06-08 | 黄石百斯特智能科技有限公司 | A kind of machine tool guideway with lubricant passage way |
-
2020
- 2020-04-15 CN CN202010294674.2A patent/CN111458094A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040103713A1 (en) * | 2002-11-18 | 2004-06-03 | Voon Wong Shaw | Pendulum impact test rig |
| CN103759912A (en) * | 2014-01-07 | 2014-04-30 | 北京卫星环境工程研究所 | Pneumatic type horizontal shock platform |
| CN103983416A (en) * | 2014-06-04 | 2014-08-13 | 北京卫星环境工程研究所 | Pendulum bob shock test apparatus table board with locking guide rail device |
| CN207163802U (en) * | 2017-07-25 | 2018-03-30 | 西安东仪综合技术实验室有限责任公司 | A kind of low resistance slide rail for shock response spectrum testing stand |
| CN207205992U (en) * | 2017-08-31 | 2018-04-10 | 贵州捷盛钻具股份有限公司 | A kind of machine tool dragging plate lubrication system |
| CN207464828U (en) * | 2017-11-15 | 2018-06-08 | 黄石百斯特智能科技有限公司 | A kind of machine tool guideway with lubricant passage way |
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Application publication date: 20200728 |
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| RJ01 | Rejection of invention patent application after publication |