CN108593538B - Large-span electronic testing machine for detecting physical performance of EMAS unit - Google Patents
Large-span electronic testing machine for detecting physical performance of EMAS unit Download PDFInfo
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- CN108593538B CN108593538B CN201810337255.5A CN201810337255A CN108593538B CN 108593538 B CN108593538 B CN 108593538B CN 201810337255 A CN201810337255 A CN 201810337255A CN 108593538 B CN108593538 B CN 108593538B
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- 238000001456 electron microprobe Auger spectroscopy Methods 0.000 title claims abstract description 43
- 238000012360 testing method Methods 0.000 title claims abstract description 34
- 230000036314 physical performance Effects 0.000 title claims abstract description 21
- 230000007246 mechanism Effects 0.000 claims abstract description 28
- 238000001514 detection method Methods 0.000 claims abstract description 19
- 239000000463 material Substances 0.000 claims abstract description 18
- 230000005540 biological transmission Effects 0.000 claims abstract description 15
- 230000006835 compression Effects 0.000 claims abstract description 9
- 238000007906 compression Methods 0.000 claims abstract description 9
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 7
- 229910052782 aluminium Inorganic materials 0.000 claims description 7
- 238000000034 method Methods 0.000 description 5
- 230000000903 blocking effect Effects 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- 241000131329 Carabidae Species 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000004154 testing of material Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N19/00—Investigating materials by mechanical methods
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- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention provides a large-span electronic testing machine for detecting physical performance of an EMAS unit, which comprises: the case is provided with a first through hole; a power transmission device is arranged in the case; the supporting mechanism is arranged on the lower surface of the case, and the supporting mechanism and the case form a space for accommodating a material to be tested; the first lead screw and the second lead screw are respectively arranged at two sides of the first through hole and are connected with a power transmission device of the case; the first end of the movable cross beam is connected with the first screw rod through a first connecting piece, and the second end of the movable cross beam is connected with the second screw rod through a second connecting piece; the load sensor is arranged on the lower surface of the movable cross beam; and one end part of the compression rod is connected with the load sensor, and the other end part of the compression rod can pass through the first through hole. The test space surrounded by the supporting mechanism and the chassis positioned on the supporting mechanism meets the requirements of the size of the EMAS unit body for in-out and detection, thereby conveniently realizing the physical performance detection of the EMAS unit body.
Description
Technical Field
The invention relates to an electronic testing machine, in particular to a large-span electronic testing machine for detecting physical performance of an EMAS unit.
Background
A characteristic arresting material system (Engineered Materials Arresting System, EMAS) is a system that is installed outside the runway end of an airport to provide effective arresting of aircraft that are rushing out of the runway. The blocking force mechanism is as follows: the wheels of the runway aircraft roll the EMAS characteristic material (usually a lightweight porous material) in the EMAS blocking bed, and the EMAS characteristic material is crushed under the action of load in the rolling process to absorb the kinetic energy of the aircraft, so that the aircraft is decelerated, and the mechanical property of the EMAS characteristic material is very important for the blocking efficiency and safety of an EMAS system. At present, EMAS products (EMAS arresting beds) at home and abroad are usually formed by splicing prefabricated unit bodies made of EMAS characteristic materials, so that the main work of EMAS performance detection is to detect mechanical properties of the EMAS unit bodies.
The EMAS unit cell is typically not less than 1m in length and width and varies in height from 20cm to 70 cm. However, first, the conventional material testing machine is mainly used for performance detection of small-sized materials or test pieces, and the position of the material to be tested is usually smaller than 1m, which cannot meet the space requirement of the EMAS unit body. Secondly, in the production process, the EMAS unit body is generally transported by using a hydraulic carrier (ground cow) or a rail, and a power transmission device of a common material testing machine is generally arranged in a base at the lower part of the testing machine, so that the height of the base is higher, and the EMAS unit body is not convenient to be transported to a detection position directly by adopting a slope type ramp; because the power transmission device is arranged in the base at the lower part of the testing machine, the base of the testing machine is not easy to be hidden below the horizontal plane by adopting a sinking method in order to meet the maintenance requirement. Thirdly, taking an EMAS unit body with the height of 70cm as an example, on one hand, the distance between an upper pressure head and a lower pressure plate of the testing machine is required to be larger than 70cm (without the height of transfer equipment such as ground beetles, etc.), so that the unit body can be normally put in; on the other hand, the mechanical properties of EMAS units should generally detect 80% or more of crush, the compression depth should be at least 56cm, and the beam travel of the tester is required to be at least 56cm, however, the existing conventional testers cannot well meet the above detection requirements.
Disclosure of Invention
Features and advantages of the invention will be set forth in part in the description which follows, or may be obvious from the description, or may be learned by practice of the invention.
The technical scheme adopted by the invention for solving the technical problems is as follows:
according to one aspect of the present invention there is provided a large-span electronic testing machine for the physical performance detection of EMAS units, comprising:
the case is provided with a first through hole; a power transmission device is arranged in the case;
the supporting mechanism is arranged on the lower surface of the case, and the supporting mechanism and the case form a space for accommodating a material to be tested;
the first lead screw and the second lead screw are respectively arranged at two sides of the first through hole and are connected with the power transmission device of the chassis;
the first end of the movable cross beam is connected with the first screw rod through a first connecting piece, and the second end of the movable cross beam is connected with the second screw rod through a second connecting piece;
the load sensor is arranged on the lower surface of the movable cross beam;
and a compression rod, one end of which is connected with the load sensor, and the other end of which can pass through the first through hole.
Optionally, the supporting mechanism and the chassis form a reverse U shape.
Optionally, the device further comprises a base, and the base is arranged below the case and connected with the supporting mechanism.
Optionally, a slope is arranged on one side of the base, which is not connected with the supporting mechanism.
Optionally, a track is provided on the base.
Optionally, the method further comprises:
the two first guide polished rods are arranged on two sides of the first screw rod;
two second guiding polished rods are arranged on two sides of the second screw rod;
two first grooves are formed in the first connecting piece and matched with the two first guide polished rods;
and two first grooves are formed in the second connecting piece and matched with the two second guiding polished rods.
Optionally, the device further comprises a fixed cross beam, the tops of the first guide polish rod and the second guide polish rod are fixedly connected to the fixed cross beam, and the first screw rod and the second screw rod are rotatably connected to the fixed cross beam.
Optionally, the device further comprises a first aluminum side cover and a second aluminum side cover, which are respectively covered on the peripheries of the two first guiding polished rods and the second guiding polished rods.
Optionally, the supporting mechanism includes two sets of support columns that set up respectively in the quick-witted case both ends, and the distance between two sets of support columns is greater than 1 meter.
The invention provides a large-span electronic test machine for detecting the physical performance of an EMAS unit, which can meet the requirements of the dimension of the EMAS unit for in-out and detection.
The features and content of these solutions will be better understood by those of ordinary skill in the art from a reading of the specification.
Drawings
The advantages and the manner of carrying out the invention will become more apparent from the following detailed description, taken in conjunction with the accompanying drawings, in which the content shown is meant to illustrate, but not to limit, the invention in any sense, and wherein:
fig. 1 is a schematic structural diagram of a large-span electronic testing machine for detecting physical performance of an EMAS unit according to an embodiment of the present invention.
FIG. 2 is a side view of a large-span electronic testing machine for the physical performance testing of an EMAS unit according to another embodiment of the present invention.
FIG. 3 is a side view of a large-span electronic testing machine for EMAS unit physical performance testing according to another embodiment of the present invention.
Detailed Description
As shown in fig. 1, the invention provides a large-span electronic testing machine for detecting physical performance of an EMAS unit, which comprises a machine case 10, a supporting mechanism 20, a first lead screw 31, a second lead screw 32, a movable cross beam 60, a load sensor 51 and a compression rod 52, wherein:
the case 10 is provided with a first through hole 11; a power transmission device is arranged in the case 10; the power transmission device comprises a servo driver, a servo motor, a speed reducer and a toothed belt, wherein the servo controller sends out instructions to control the servo motor, and then power transmission is carried out through the speed reducer and the toothed belt.
The first lead screw 31 and the second lead screw 32 are respectively arranged at two sides of the first through hole 11 and are connected with a power transmission device of the case 10; more specifically, the first screw 31 and the second screw 32 are ball screws, and the two ball screws are driven to rotate by a toothed belt in the power transmission device. The toothed belt is a high-torque arc tooth synchronous toothed belt, and the screw rod is a high-precision pre-tightening screw rod. In order to ensure the precision and the safety of the equipment, an aluminum side cover and a dustproof curtain can be arranged outside the screw rod.
The supporting mechanism 20 is arranged on the lower surface of the case 10, and the supporting mechanism 20 and the case 10 form a space for accommodating a material to be tested; in this embodiment, the supporting mechanism and the chassis form a U-shape. Optionally, the supporting mechanism 20 includes two sets of supporting columns respectively disposed at two ends of the chassis, and a distance between the two sets of supporting columns is greater than 1 meter, so as to facilitate the material to be tested to go in and go out.
The first end of the movable cross beam 51 is connected with the first screw rod 31 through a first connecting piece 41, and the second end of the movable cross beam 51 is connected with the second screw rod 32 through a second connecting piece 42; the first and second connection members 41 and 42 are moved up and down by the first and second lead screws 31 and 32, thereby driving the movable cross member 51 to move up and down. A fixed cross member 60 may be further included, and the first lead screw 31 and the second lead screw 32 are rotatably coupled to the fixed cross member 60.
The load sensor 52 is provided on the lower surface of the movable cross member 51; one end of the compression rod 53 is connected to the load cell 52, and the other end can pass through the first through hole 11 in the casing 10. The compression rod 53 is further provided with a ram 54 at the end passing through the first through hole 11. The material to be tested in the test space is loaded in the up-and-down movement of the movable cross beam, and the load sensor measures in the process
In the embodiment, a power device and a transmission device of the testing machine are positioned in a case in the middle of the testing machine; the compression rod can pass through the through hole on the case, and the normal operation of equipment in the case is not affected; the space formed by the supporting mechanism and the chassis can meet the requirements of the dimension of the EMAS unit body for in-out and detection.
Referring to fig. 2, in the embodiment of fig. 1, the present embodiment further includes a base 80 disposed below the chassis 10 and connected to the supporting mechanism 20. The support mechanism 20 is connected to opposite sides of the base 80, and the side of the base not connected to the support mechanism is provided with a ramp 81 to facilitate pushing of the material to be tested using a transfer device (e.g., a ground beetle).
Furthermore, the method further comprises: two first guide polished rods 71 provided on both sides of the first screw shaft 31; two second guide polish rods 72 are provided on both sides of the second lead screw 32. The first connecting piece 41 is provided with two first grooves which are matched with the two first guiding polished rods 71; the second connecting piece 42 is provided with two first grooves which are matched with two second guiding polish rods 72. Thereby ensuring that the movable cross member 51 does not deflect when it moves up and down. The top of the first guide polish rod 71 and the second guide polish rod 72 may be fixedly connected to the fixed cross member 60.
At this time, the first aluminum side cover and the second aluminum side cover are respectively covered on the peripheries of the two first guiding polished rods and the second guiding polished rods.
In another embodiment of the invention, a rail may also be provided on the base; therefore, when the material to be tested is transported by using the track (for example, a production line comprises a mechanical property detection procedure), the track can be placed in or on the base of the testing machine, and the space formed by the supporting mechanism and the machine case can realize the in-out of the material to be tested at two ends.
Because the tester base has no power and transmission device, the height is lower, so as shown in fig. 3, the tester base can be sunk to the ground, so that the upper part of the base is level with the ground, and a transfer device (such as a ground cow) is used for pushing the material to be tested.
The invention provides a large-span electronic testing machine for detecting the physical performance of an EMAS unit, and a testing space surrounded by a supporting mechanism and a machine box positioned on the supporting mechanism meets the requirements of the size of the EMAS unit for in-out and detection, so that the mechanical performance detection of the EMAS unit (the short side size is more than or equal to 1 m) is realized conveniently.
While the preferred embodiments of the present invention have been illustrated by reference to the accompanying drawings, those skilled in the art will appreciate that many modifications are possible in carrying out the invention without departing from the scope and spirit thereof. For example, features illustrated or described as part of one embodiment can be used on another embodiment to yield still a further embodiment. The foregoing description and drawings are merely illustrative of preferred embodiments of the present invention and are not intended to limit the scope of the claims, but rather to cover all modifications within the scope of the present invention.
Claims (9)
1. A large-span electronic testing machine for detecting physical performance of an EMAS unit, comprising:
the case is provided with a first through hole; a power transmission device is arranged in the case;
the supporting mechanism is arranged on the lower surface of the case, and the supporting mechanism and the case form a space for accommodating a material to be tested;
the first lead screw and the second lead screw are respectively arranged at two sides of the first through hole and are connected with the power transmission device of the chassis;
the first end of the movable cross beam is connected with the first screw rod through a first connecting piece, and the second end of the movable cross beam is connected with the second screw rod through a second connecting piece;
the load sensor is arranged on the lower surface of the movable cross beam;
and a compression rod, one end of which is connected with the load sensor, and the other end of which can pass through the first through hole.
2. The long-span electronic testing machine for the physical performance detection of EMAS units according to claim 1, wherein the supporting mechanism and the chassis form a "n" shape.
3. The large-span electronic testing machine for the physical performance detection of EMAS units according to claim 1, further comprising a base disposed below the chassis and connected to the support mechanism.
4. A large-span electronic testing machine for physical performance detection of EMAS units according to claim 3, wherein the side of the base not connected to the support means is provided with a ramp.
5. A large-span electronic testing machine for physical performance detection of EMAS units according to claim 3, wherein the base is provided with a track.
6. The large-span electronic testing machine for the physical performance detection of EMAS units according to claim 1, further comprising:
the two first guide polished rods are arranged on two sides of the first screw rod;
two second guiding polished rods are arranged on two sides of the second screw rod;
two first grooves are formed in the first connecting piece and matched with the two first guide polished rods;
and two first grooves are formed in the second connecting piece and matched with the two second guiding polished rods.
7. The large-span electronic testing machine for the physical performance detection of EMAS units according to claim 6, further comprising a fixed cross beam, wherein the tops of the first and second guiding polished rods are fixedly connected to the fixed cross beam, and wherein the first and second lead screws are rotatably connected to the fixed cross beam.
8. The large-span electronic testing machine for detecting physical performance of EMAS unit according to claim 6, further comprising a first aluminum side cover and a second aluminum side cover respectively covering the peripheries of the two first guiding polish rods and the second guiding polish rod.
9. The large-span electronic testing machine for the physical performance detection of EMAS units according to claim 1, wherein the supporting mechanism comprises two groups of supporting columns respectively arranged at two ends of the chassis, and the distance between the two groups of supporting columns is greater than 1 meter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810337255.5A CN108593538B (en) | 2018-04-16 | 2018-04-16 | Large-span electronic testing machine for detecting physical performance of EMAS unit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810337255.5A CN108593538B (en) | 2018-04-16 | 2018-04-16 | Large-span electronic testing machine for detecting physical performance of EMAS unit |
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| CN108593538A CN108593538A (en) | 2018-09-28 |
| CN108593538B true CN108593538B (en) | 2023-11-21 |
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