CN110108565B - High-frequency composite electronic universal testing machine - Google Patents

High-frequency composite electronic universal testing machine Download PDF

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Publication number
CN110108565B
CN110108565B CN201910485938.XA CN201910485938A CN110108565B CN 110108565 B CN110108565 B CN 110108565B CN 201910485938 A CN201910485938 A CN 201910485938A CN 110108565 B CN110108565 B CN 110108565B
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Prior art keywords
clamp
frequency
armature
connecting column
composite electronic
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CN110108565A (en
Inventor
张学成
逯志坚
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Changchun Haoyuan Testing Machine Co ltd
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Changchun Haoyuan Testing Machine Co ltd
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/02—Details
    • G01N3/04—Chucks
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/32—Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces
    • G01N3/38—Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces generated by electromagnetic means
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/0014—Type of force applied
    • G01N2203/0016—Tensile or compressive
    • G01N2203/0017—Tensile
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/0014—Type of force applied
    • G01N2203/0016—Tensile or compressive
    • G01N2203/0019—Compressive
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/003—Generation of the force
    • G01N2203/005—Electromagnetic means
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/02—Details not specific for a particular testing method
    • G01N2203/04—Chucks, fixtures, jaws, holders or anvils

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  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • 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)
  • Electromagnetism (AREA)
  • Testing Electric Properties And Detecting Electric Faults (AREA)
  • Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)

Abstract

The high-frequency composite electronic universal testing machine belongs to the technical field of testing machines, and aims to solve the problems of complex operation, low efficiency and low equipment utilization rate in the prior art; the high-frequency composite electronic universal testing machine comprises: the machine frame at least comprises an upper cross beam and a lower cross beam which are oppositely arranged in the height direction and move relatively in parallel; the clamp is arranged between the upper cross beam and the lower cross beam, and comprises an upper clamp and a lower clamp which are oppositely arranged in the height direction of the frame, and the lower clamp is fixedly connected with the lower cross beam; the electromagnetic high-frequency excitation mechanism passes through the upper cross beam through a connecting column and is fixedly connected with the upper clamp; the switching mechanism is used for realizing the switching of the connecting column relative to the upper cross beam in a fixed state and a free state; and the two ends of the cage-shaped structure are detachably connected with the upper clamp and the lower clamp respectively.

Description

High-frequency composite electronic universal testing machine
Technical Field
The invention belongs to the technical field of testers, and particularly relates to a high-frequency composite electronic universal tester.
Background
In the prior art, materials, components or devices in many fields need to be subjected to stability test before practical use to determine the reliability of the quality, and structures used for mechanical testing of materials, components or devices in the prior art include electromagnetic high-frequency testers, electronic universal testers, electromagnetic vibration tables and the like. The three devices are widely used, but different devices need to be replaced when one to-be-tested piece is subjected to various mechanical tests, so that the device is complex in operation and low in efficiency, and meanwhile, the utilization rate of a single device is low.
Disclosure of Invention
The invention aims to provide a high-frequency composite electronic universal testing machine, which solves the problems of complex operation, low efficiency and low equipment utilization rate in the prior art; the electromagnetic high-frequency test, the electronic universal test and the electromagnetic vibration table are integrated on one device, and various test operations are completed on one compound testing machine.
In order to achieve the above object, the high-frequency composite electronic universal testing machine of the present invention comprises:
the machine frame at least comprises an upper cross beam and a lower cross beam which are oppositely arranged in the height direction and move relatively in parallel;
the clamp is arranged between the upper cross beam and the lower cross beam, and comprises an upper clamp and a lower clamp which are oppositely arranged in the height direction of the frame, and the lower clamp is fixedly connected with the lower cross beam;
the electromagnetic high-frequency excitation mechanism passes through the upper cross beam through a connecting column and is fixedly connected with the upper clamp;
the switching mechanism is used for realizing the switching of the connecting column relative to the upper cross beam in a fixed state and a free state;
and the two ends of the cage-shaped device are detachably connected with the upper clamp and the lower clamp respectively.
The electromagnetic high-frequency excitation mechanism comprises:
the vibration exciter is arranged in the height direction of the frame;
the upper armature is connected with the vibration exciter through an upper bow spring, and the upper armature is connected with the upper clamp through a connecting column;
the lower armature is fixedly connected with the connecting column through a lower bow spring and the lower end face of the upper cross beam;
and the frequency modulation mechanism at least comprises n frequency modulation weights which are coaxially and detachably connected with the lower armature iron.
The frequency modulation mechanism further comprises a bracket, the bracket is fixedly connected with a screw rod upright post connected between the upper beam and the lower beam, n frequency modulation weights can be borne, and the height between the bracket and the lower armature is greater than n weight superposition thicknesses.
The switching mechanism at least comprises a screw rod with double threads, and the screw rod is connected between the upper cross beam and the connecting part of the lower bow spring and the lower armature; the screw rod is in threaded connection with the lower bow spring and the lower armature connecting part, the lower armature is fixedly connected with the connecting column, the connecting column is in the fixed state, the screw rod is separated from the lower bow spring and the lower armature connecting part, the lower armature is fixedly connected with the connecting column, and the connecting column is in the free state.
The switching mechanism further comprises a nut gland fixed on the upper beam, and the nut gland is in threaded connection with one end of the screw rod.
The cage device comprises:
the hollow bin body is provided with a bin gate;
the hollow bin body is fixedly connected with a vibration bow spring in series along the height direction of the frame;
and two output cylinders arranged at two ends of the whole body formed by the hollow bin body and the vibration bow spring along the height direction of the frame, wherein the two output cylinders are detachably connected with the upper clamp and the lower clamp respectively.
The two output cylinders are coincident with the central lines and the gravity lines of the hollow bin body and the bow springs.
The frame further comprises:
the lower cross beam is fixed on the stand;
the screw rod upright post is connected between the upper beam and the lower beam;
and the transmission system is matched with the screw rod upright post and drives the screw rod upright post to rotate so that the upper cross beam moves relative to the lower cross beam.
The universal testing machine also comprises a sound-proof cover, wherein the sound-proof cover is covered on the outer side of the structure of the electromagnetic high-frequency excitation mechanism positioned on the upper part of the upper beam.
The universal testing machine further comprises a detection control system, and the mechanical parameters of the universal testing machine are detected through the detection control system.
The beneficial effects of the invention are as follows: the high-frequency composite electronic universal testing machine combines the functions of an electromagnetic high-frequency testing machine, an electronic universal testing machine and an electromagnetic vibration table. Four screw columns, an upper cross beam and a lower cross beam form a four-column gantry frame; the upper beam can move up and down through the roller screw nut pair transmission mechanism as required, and when the upper beam does not move, the gantry frame approximates to a rigid frame mechanism; the lower beam is connected with a transmission system of the screw nut pair, and the transmission system is a mechanism with a self-locking function. The vibration exciter is an actuator for generating high-frequency excitation force, an upper bow spring and a lower bow spring are respectively arranged between the connection of the vibration exciter and the upper clamp, a test piece to be tested is clamped between the upper clamp and the clamp, the vibration exciter generates excitation force, and an electromagnetic high-frequency excitation test is realized; in addition, the frequency modulation mechanism of the electromagnetic high-frequency excitation mechanism realizes frequency modulation by coaxially fixing different numbers of frequency modulation weights on the lower armature, when the frequency modulation weights are not in a use state, the frequency modulation weights are fastened and placed on brackets fastened with four screw rod upright posts, and when the frequency modulation mechanism is used, only the fastening positions of screws need to be replaced, so that the coaxial fixed connection with the lower armature is realized. The lower bow spring that entablature and lower armature are connected can be shielded through locking mechanism, loses the spring ability promptly, makes entablature, lower armature and spliced pole be whole fixed knot and constructs, realizes the tensile or compression test to the time of awaiting measuring through the up-and-down motion of entablature relative lower crossbeam, realizes the conversion between electromagnetism high frequency testing machine and the electronic universal testing machine. The locking mechanism, i.e. the conversion mechanism, consists of a set of screw nut mechanism and a set of transmission system. The screw nut mechanism comprises a double-end threaded screw and a nut gland. The screw rod is provided with threads at two ends, a long cylindrical surface, a short cylindrical surface and two shaft shoulders are arranged at the middle part, and a torque transmission configuration is arranged at the end part of one end of the large shaft shoulder. The lower end of the double-end threaded screw rod can be screwed with the lower half part of the center part of the lower bow spring, the axial positioning is realized by a small shaft shoulder on the screw rod, and the center positioning is realized by a long outer cylindrical surface of the screw rod. The other thread part of the screw rod is screwed with the nut gland. When the screw rod is rotated, the lower end screw thread is screwed, the small shaft shoulder is positioned, and at the moment, the position of the very large shaft shoulder is positioned on the upper cross beam in the axial direction and the radial direction. In this way, the upper cross beam is fastened to the lower half of the central portion of the lower bow spring. The lower half part of the center part of the lower bow spring is indirectly fixedly connected with the lower clamp, the lower bow spring is shielded, and the tester realizes the electric pulling function. Otherwise, when the screw rod is rotated, the lower end screw thread is separated from screwing, the small shaft shoulder is separated from positioning until the large shaft shoulder part is separated from positioning on the upper cross beam, and the screw rod is fastened with the nut gland and limited by the large shaft shoulder in the axial direction. At this time, the lower end of the screw rod is just completely separated from the screwing of the lower bow spring, the lower bow spring can perform the original spring function, and the testing machine realizes the high-frequency excitation function. The invention can realize the conversion between the electromagnetic high-frequency function and the electromagnetic vibration table function. The conversion is achieved by a set of special mechanisms. The switching mechanism is a cage-shaped device, two ends of the switching mechanism are provided with cylindrical connecting ends, the whole switching mechanism can be regarded as a test piece of the high-frequency testing machine, and the switching mechanism is fixedly connected with an upper chuck and a lower chuck of the testing machine through the connecting ends. The cage-like transfer mechanism includes a specimen-mounting container and a vibrating bow spring. The invention can complete more experimental tasks and improve the utilization rate of equipment. The conversion between the various functions is very conveniently realized by special mechanisms. Provides a more convenient means for solving the problems of materials, components, devices and the like.
Drawings
FIG. 1 is a schematic diagram of a high frequency composite electronic universal tester of the present invention;
FIG. 2 is a quarter sectional view of the overall structure of the high frequency composite electronic universal tester of the present invention;
FIG. 3 is a quarter sectional view of the high frequency composite electronic universal tester of the present invention with the sound enclosure hidden;
FIG. 4 is a schematic diagram of the overall structure of the high-frequency composite electronic universal tester of the invention;
FIG. 5 is a schematic view of a partial structure of the high-frequency composite electronic universal tester of the present invention;
FIG. 6 is a schematic diagram of a switching mechanism in the high frequency composite electronic universal tester of the present invention;
FIG. 7 is a schematic diagram of the cage-type device in the high-frequency composite electronic universal tester of the present invention;
FIG. 8 is a schematic diagram of the structure of a lower bow spring in the high frequency composite electronic universal tester of the present invention;
wherein: 1. the device comprises a frame, 101, a frame, 102, an upper beam, 103, a lower beam, 104, a screw column, 105, a transmission system, 2, a clamp, 201, an upper clamp, 202, a lower clamp, 3, an electromagnetic high-frequency excitation mechanism, 301, an exciter, 302, an upper bow spring, 303, an upper armature, 304, a connecting column, 305, a lower bow spring, 306, a lower armature, 307, a frequency modulation weight, 308, a bracket, 4, a conversion mechanism, 401, a screw, 402, a nut gland, 403, a torque transmission and guide shaft, 404, an upper thread, 405, an upper positioning shoulder, 406, a lower positioning shoulder, 407, a lower thread, 5, a cage type device, 501, a hollow bin body, 502, a vibration bow spring, 503, an output cylinder, 6 and a sound insulation cover.
Detailed Description
Embodiments of the present invention will be further described with reference to the accompanying drawings.
Referring to fig. 1 to 4 and 8, the high frequency composite electronic universal tester of the present invention comprises:
a frame 1, wherein the frame 1 at least comprises an upper beam 102 and a lower beam 103 which are oppositely arranged in the height direction and relatively move in parallel;
a clamp 2 disposed between the upper beam 102 and the lower beam 103, the clamp 2 including an upper clamp 201 and a lower clamp 202 disposed opposite to each other in a height direction of the frame 1, the lower clamp 202 being fixedly connected to the lower beam 103;
the electromagnetic high-frequency excitation mechanism 3 is arranged on the upper beam 102, and the electromagnetic high-frequency excitation mechanism 3 passes through the upper beam 102 through a connecting column 304 and is fixedly connected with the upper clamp 201;
the switching mechanism 4 is used for realizing the switching of the connecting column 304 relative to the upper beam 102 in a fixed state and a free state through the switching mechanism 4;
and a cage-type device 5 with both ends detachably connected to the upper and lower jigs 201 and 202, respectively.
The electromagnetic high-frequency excitation mechanism 3 includes:
a vibration exciter 301 provided in the height direction of the frame 1;
an upper armature 303 connected to the exciter 301 via an upper bow spring 302, the upper armature 303 being connected to the upper clamp 201 via a connecting post 304;
a lower armature 306 connected with the lower end surface of the upper beam 102 through a lower bow spring 305, wherein the lower armature 306 is fixedly connected with the connecting post 304;
and the frequency modulation mechanism at least comprises n frequency modulation weights 307 which are coaxially and detachably connected with the lower armature 306.
Referring to fig. 5, the frequency modulation mechanism further includes a bracket 308, where the bracket 308 is fixedly connected with the screw rod upright 104 connected between the upper beam 102 and the lower beam 103, and is capable of carrying n frequency modulation weights 307, and the height between the bracket 308 and the lower armature 306 is greater than n weight stack thicknesses. The frequency modulation weight 307 selected by the system in the frequency modulation system and the unused weight adopt a switching fastening mode. The unselected weights are secured to brackets 308 affixed to the screw shaft post 104 and secured by screws. The selected frequency modulation weight 307 is fastened with the lower armature 306 through a screw. The fastening method is that when one of the frequency modulation weights 307 is selected, the frequency modulation weight 307 is detached from the bracket 308, and the detached screw is just used for fastening the selected breaking weight on the lower armature 306.
Referring to fig. 6, the switching mechanism 4 includes at least one double-threaded screw 401, and the screw 401 is connected between the upper beam 102 and the connection portion of the lower bow spring 305 and the lower armature 306; the screw 401 and the lower bow spring 305 are in threaded connection with the connecting part of the lower armature 306, the lower armature 306 is fixedly connected with the connecting column 304, the connecting column 304 is in the fixed state, the screw 401 is separated from the connecting part of the lower bow spring 305 and the lower armature 306, the lower armature 306 is fixedly connected with the connecting column 304, and the connecting column 304 is in the free state.
The conversion mechanism 4 further comprises a nut gland 402 fixed on the upper beam 102, and the nut gland 402 is in threaded connection with one end of the screw 401.
The screw 401 is axially formed as a single piece of five parts, namely a torque transmission and guiding shaft 403, an upper thread 404, an upper positioning shoulder 405, a lower positioning shoulder 406 and a lower thread 407. Wherein the lower screw thread 407 is screwed with the center part of the lower half part of the lower bow spring 305 to realize fastening; the outer circle surface of the lower positioning shoulder 406 is matched with the central slotted hole part of the lower half part of the lower bow spring 305 to realize central positioning, and the lower end surface of the lower positioning shoulder 406 is contacted with the bottom end surface of the central slotted hole of the lower half part of the lower bow spring 305 to realize axial positioning; the outer cylindrical surface of the upper positioning shoulder 405 and the central positioning hole of the upper beam 102 realize central positioning, and the lower end surface of the upper positioning shoulder 405 and the bottom end surface of the central positioning hole of the upper beam 102 realize axial positioning; the upper screw 404 is screwed with the nut gland 402 fixed on the beam; the torque transmission and guiding shaft 403 provides the motive torque to rotate the screw 401. Thus, the testing machine is in an electronic tension working state, and the screw transmission mechanism taking the screw rod 401 as a main body shields the action of the lower bow spring 305, so that the acting force of the test piece is directly transmitted to the upper beam 102. Conversely, the screw 401 is rotated, so that the upper positioning shoulder 405 cooperates with the positioning hole of the nut gland 402 to realize the centering until the upper end surface contacts with the bottom surface of the positioning hole. At this point the end face of the just lower thread 407 is clear of the lower bow spring 305 and does not affect the deformation requirements of the lower bow spring 305. The testing machine is converted into an electromagnetic high-frequency working mode. The screw 401 is driven to rotate by a set of devices that provide torque and rotational speed to the screw 401. It may be automatically controlled and may be manually controlled. The manual condition is that a spanner matched with the screw 401 is used for manually screwing up or screwing down the screw; in the automatic case, a worm gear is used to drive the screw rod to rotate up or down, and the power drive is a common rotating motor. When used as an electronic universal tester, the upper beam 102 moves up and down relative to the lower beam 103 to provide tensile and compressive forces.
Referring to fig. 7, the cage device 5 includes:
the hollow bin body 501, wherein a bin gate is arranged on the hollow bin body 501;
the hollow bin body 501 is fixedly connected with a vibration bow spring 502 in series along the height direction of the frame 1;
and two output cylinders 503 arranged at both ends of the whole body formed by the hollow cabin body 501 and the vibration bow spring 502 along the height direction of the frame 1, wherein the two output cylinders 503 are detachably connected with the upper clamp 201 and the lower clamp 202 respectively.
The two output cylinders 503 coincide with the center line and the gravity line of the hollow cartridge body 501 and the bow spring.
The hollow housing 501 of the cage is square or cylindrical with a wall thickness, and a suitable door is provided on one side. The lower part is a vibrating bow spring 502. The whole can be regarded as a test piece of a high-frequency testing machine, and is tightly connected with an upper clamp 201 and a lower clamp 202 of the testing machine through connecting ends; when the electromagnetic vibration table is used, the cage-type device is used, a test piece to be tested is placed in the hollow bin body 501, and the bin door is closed; when the electromagnetic high-frequency tester is used, the test piece to be tested is used for replacing the cage-shaped device.
The frame 1 further comprises:
the machine base 101, the said lower crossbeam 103 is fixed on said machine base 101;
a screw column 104 connected between the upper beam 102 and the lower beam 103; the screw rod upright post 104, the upper beam 102 and the lower beam 103 form a four-column gantry frame, and the upper beam 102 can move up and down through the screw rod upright post 104 according to the requirement; and when the gantry frame does not move, the gantry frame approximates a rigid frame mechanism;
and a transmission system 105 matched with the screw rod upright 104, wherein the transmission system 105 drives the screw rod upright 104 to rotate so as to enable the upper beam 102 to move relative to the lower beam 103. The conventional system 105 is a power input and transmission unit, drives four screw posts 104 to synchronously move, and can be that a motor drives a driving gear to rotate, and the driving gear simultaneously drives four nuts meshed with the four screw posts 104 to rotate, and the screw posts 104 are matched with the upper beam 102 and the lower beam 103 through bearings.
The universal testing machine also comprises a sound-proof cover 6, wherein the sound-proof cover 6 covers the electromagnetic high-frequency excitation mechanism 3 outside the structure of the upper part of the upper beam 102. The sound insulation device is a shell with a sound insulation function and is arranged at the top of the testing machine. The electromagnetic excitation system for excitation is isolated from the outside.
The universal testing machine further comprises a detection control system, and the mechanical parameters of the universal testing machine are detected through the detection control system. The lower end of the lower clamp 202 is connected with a force sensor, and the magnitude of the force applied to the test piece or the cage device 5 can be detected; the strain of the test piece can be measured by placing a strain gauge on the test piece; the magnitude of the displacement of the upper beam 102 moving up and down is detected by a displacement sensor.
The high frequency mentioned in the present invention is provided by the exciter 301, specifically, the frequency is above 200 Hz.

Claims (7)

1. A high frequency composite electronic universal tester comprising:
the machine frame (1), the said machine frame (1) includes upper beam (102) and lower beam (103) relatively set up and relatively parallel movement in the height direction at least;
the clamp (2) is arranged between the upper beam (102) and the lower beam (103), the clamp (2) comprises an upper clamp (201) and a lower clamp (202) which are oppositely arranged in the height direction of the frame (1), and the lower clamp (202) is fixedly connected with the lower beam (103);
characterized by further comprising:
the electromagnetic high-frequency excitation mechanism (3) is arranged on the upper beam (102), and the electromagnetic high-frequency excitation mechanism (3) penetrates through the upper beam (102) through a connecting column (304) and is fixedly connected with the upper clamp (201);
the switching mechanism (4) is used for realizing the switching of the connecting column (304) relative to the upper beam (102) in a fixed state and a free state through the switching mechanism (4);
and a cage-type device (5) with two ends detachably connected with the upper clamp (201) and the lower clamp (202) respectively;
the cage device (5) comprises:
the hollow bin comprises a hollow bin body (501), wherein a bin gate is arranged on the hollow bin body (501);
the hollow bin body (501) is fixedly connected with a vibration bow spring (502) in series along the height direction of the frame (1);
the two output cylinders (503) are arranged at the two ends of the whole body formed by the hollow bin body (501) and the vibration bow spring (502) along the height direction of the frame (1), and the two output cylinders (503) are respectively detachably connected with the upper clamp (201) and the lower clamp (202);
the two output cylinders (503) are coincident with the central lines and the gravity lines of the hollow bin body (501) and the bow springs;
the frame (1) further comprises:
the lower cross beam (103) is fixed on the base (101);
the screw rod upright post (104) is connected between the upper beam (102) and the lower beam (103);
and the transmission system (105) is matched with the screw rod upright post (104), and the transmission system (105) drives the screw rod upright post (104) to rotate so that the upper beam (102) moves relative to the lower beam (103).
2. The high-frequency composite electronic universal tester according to claim 1, wherein the electromagnetic high-frequency excitation mechanism (3) comprises:
a vibration exciter (301) arranged in the height direction of the frame (1);
an upper armature (303) connected with the vibration exciter (301) through an upper bow spring (302), wherein the upper armature (303) is connected with the upper clamp (201) through a connecting column (304);
a lower armature (306) connected with the lower end surface of the upper beam (102) through a lower bow spring (305), wherein the lower armature (306) is fixedly connected with the connecting column (304);
and the frequency modulation mechanism at least comprises n frequency modulation weights (307) which are coaxially and detachably connected with the lower armature (306).
3. The high-frequency composite electronic universal testing machine according to claim 2, wherein the frequency modulation mechanism further comprises a bracket (308), the bracket (308) is fixedly connected with a screw column (104) connected between an upper beam (102) and a lower beam (103) and can bear n frequency modulation weights (307), and the height between the bracket (308) and the lower armature (306) is greater than n weight superposition thicknesses.
4. The high-frequency composite electronic universal tester according to claim 2, wherein said switching mechanism (4) comprises at least one double-threaded screw (401), said screw (401) being connected between said upper beam (102) and the connection portion of the lower bow spring (305) with the lower armature (306); the screw rod (401) is in threaded connection with the connecting part of the lower bow spring (305) and the lower armature (306), the lower armature (306) is fixedly connected with the connecting column (304), the connecting column (304) is in the fixed state, the screw rod (401) is separated from the connecting part of the lower bow spring (305) and the lower armature (306), the lower armature (306) is fixedly connected with the connecting column (304), and the connecting column (304) is in the free state.
5. The high-frequency composite electronic universal tester according to claim 4, wherein the conversion mechanism (4) further comprises a nut gland (402) fixed on the upper beam (102), and the nut gland (402) is in threaded connection with one end of the screw (401).
6. The high-frequency composite electronic universal testing machine according to any one of claims 1-5, further comprising a sound-proof cover (6), wherein the sound-proof cover (6) covers the electromagnetic high-frequency excitation mechanism (3) outside the structure of the upper part of the upper beam (102).
7. The high frequency composite electronic universal tester according to any of claims 1-5, further comprising a detection control system by which the mechanical parameters of the universal tester are detected by the detection control system.
CN201910485938.XA 2019-06-05 2019-06-05 High-frequency composite electronic universal testing machine Active CN110108565B (en)

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CN110108565B true CN110108565B (en) 2024-02-09

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CN110907285B (en) * 2019-11-19 2022-08-23 中国航发北京航空材料研究院 Miniature loading device for DVC method test

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