CN217845866U

CN217845866U - High-speed tensile test device

Info

Publication number: CN217845866U
Application number: CN202220940625.6U
Authority: CN
Inventors: 胡文涛
Original assignee: Shanghai Hualu Technology Co ltd
Current assignee: Shanghai Hualu Technology Co ltd
Priority date: 2022-04-24
Filing date: 2022-04-24
Publication date: 2022-11-18
Anticipated expiration: 2032-04-24

Abstract

The utility model discloses a high-speed tensile test device, its structure includes the bottom plate, support the mounting, the action wheel backup pad, the power backup pad guide bar, experimental supporting platform, power backup pad lift unit, lower clutch unit, go up clutch unit, the power backup pad, linear bearing, high-speed tensile anchor clamps, the sample, crossbeam stroke spacing unit, crossbeam stroke terminal stopper, the back timber, experimental direction polished rod, experimental ball screw, drive unit, the entablature, force transducer, the measurement of strain unit, the bottom end rail, crossbeam stroke adjustment unit, the action wheel, from the driving wheel, action wheel backup pad setting element, action wheel backup pad lift unit, action wheel backup pad guide bar and foot cup constitute, adopt the motor to be power, adopt two moving beam structure, adopt the separation and reunion technique can transmit kinetic energy fast, can automatic cutout power take off, can realize high-speed tensile, high-speed compression, high-speed impact or high-speed bending test function such as, safety, reliability.

Description

High-speed tensile test device

Technical Field

The utility model relates to a material test field especially relates to a high-speed tensile test device.

Background

The high-speed tensile test device mainly is used for detecting or researching the mechanical property of a material under the action of a dynamic load, the high-speed tensile test device based on hydraulic power is mostly adopted in the world at present, domestic high-speed tensile equipment is mainly imported at present, the equipment structure is complex, the price is high, the requirement on testers is high, the highest tensile speed is generally 20m/s, the loading speed after the highest speed is generally not well controlled due to extremely short test time, and high-speed tensile schemes for providing tensile power by using a thermal power machine or electromagnetic force are also provided at present.

SUMMERY OF THE UTILITY MODEL

The not enough that exists to prior art, the utility model provides a high-speed tensile test device, construct complicacy with solving current high-speed tensile test machine of fluid pressure type, high price, require high to testing personnel, speed behind the high-speed loading is not good to be controlled and the high-speed tensile test device of import has technical limitation scheduling problem, this device adopts the motor as the power supply, through special machinery and separation and reunion function mechanism, can be in the short time with electric energy conversion for the tensile kinetic energy to the sample, power take off in time can cut off, the synchronous power supply of sample both ends and make the sample both ends remove simultaneously has still been realized, utilize the synchronous characteristic of some motors can realize better high-speed velocity uniformity, can realize higher loading speed through adopting different hardware configuration, after joining in marriage suitable frock, can realize high-speed tensile, high-speed compression, high-speed impact or test functions such as high-speed bending.

In order to achieve the above purpose, the present invention is realized by the following technical solution: the utility model provides a high-speed tensile test device, by bottom plate (1), support mounting (2), action wheel backup pad (3), power backup pad guide bar (4), experimental supporting platform (5), power backup pad lift unit (6), lower clutch unit (7), go up clutch unit (8), power backup pad (9), linear bearing (10), high-speed tensile anchor clamps (11), sample (12), crossbeam stroke spacing unit (13), crossbeam stroke terminal stopper (14), back timber (15), experimental direction polished rod (16), experimental ball screw (17), drive unit (18), entablature (19), force transducer (20), strain measurement unit (21), bottom end rail (22), crossbeam stroke adjustment unit (23), action wheel (24), follow driving wheel (25), action wheel backup pad setting element (26), action wheel backup pad lift unit (27), action wheel backup pad guide bar (28) and foot cup (29) constitute, its characterized in that: the foot cup (29) and the supporting and fixing part (2) are connected with the bottom plate (1), the power supporting plate guide rod (4) is connected with the bottom plate (1) or the test supporting platform (5), the power supporting plate lifting unit (6) is connected with the test supporting platform (5) or the bottom plate (1), the test supporting platform (5) is connected with the supporting and fixing part (2), the lower clutch unit (7) is connected with the test supporting platform (5), the lower clutch unit (7) is connected with the driving wheel supporting plate (3), the upper clutch unit (8) and the driving unit (18) are connected with the power supporting plate (9), the linear bearing (10) is connected with the power supporting plate (9), the cross beam stroke limiting unit (13) is connected with the power supporting plate (9) and the cross beam stroke terminal limiting block (14), the test guide polished rod (16) is connected with the test supporting platform (5) or the bottom plate (1), the top beam (15) is connected with the test guide polished rod (16), the test ball screw (17) is connected with the test supporting platform (5) or the bottom plate (1), the test guide polished rod (17) is connected with the test ball screw (17) and the test guide rod (17), the force sensor (20) is connected with the upper cross beam (19) or the lower cross beam (22), the force sensor (20) is connected with the high-speed stretching clamp (11), the high-speed stretching clamp (11) is connected with the upper cross beam (19) or the lower cross beam (22), the cross beam stroke adjusting unit (23) is connected with the bottom plate (1) or the test supporting platform (5), the driving wheel (24) is connected with the lower clutch unit (7), the driven wheel (25) is connected with the test ball screw (17), the sample (12) is connected with the high-speed stretching clamp (11), the strain measuring unit (21) is over against the sample (12) or is connected with the sample (12), the driving wheel supporting plate positioning piece (26) is connected with the bottom plate (1) or the test supporting platform (5), the driving wheel supporting plate positioning piece (26) is connected with the driving wheel supporting plate (3), the driving wheel supporting plate lifting unit (27) is connected with the bottom plate (1) or the test supporting platform (5), and the supporting plate guide rod (28) is connected with the driving wheel bottom plate (1) or the test supporting platform (5).

Furthermore, experimental supporting platform (5) have constituted rigid frame through a plurality of support mounting (2) and bottom plate (1), support mounting (2) can be both ends step external screw thread type axle, both ends step internal thread type axle, both ends internal thread type axle or one end step external screw thread other end internal thread type axle, and behind the nut or the screw of locking both ends, bottom plate (1) and experimental supporting platform (5) terminal surface are parallel.

Furthermore, power backup pad lift unit (6) comprises power backup pad riser moving part (6.1) and power backup pad riser (6.2), and power backup pad riser (6.2) links to each other with bottom plate (1) or experimental supporting platform (5), and power backup pad riser (6.2) can be parts such as spiral lift, electronic jar, electric putter, cylinder and pneumatic cylinder, and power backup pad riser moving part (6.1) links to each other with power backup pad (9), and accessible power backup pad riser (6.2) makes power backup pad (9) rise, fall or stop.

Further, the driving wheel supporting plate lifting unit (27) is composed of a driving wheel supporting plate lifting unit rotating part (27.1) and a turbine box (27.2), the driving wheel supporting plate lifting unit rotating part (27.1) is connected with the turbine box (27.2), the turbine box (27.2) is connected with the base plate (1) or the test supporting platform (5), the driving wheel supporting plate lifting unit rotating part (27.1) can be a hand wheel, a motor or a combination of the motor and a speed reducer, when the driving wheel supporting plate lifting unit rotating part (27.1) is a combination of the motor or the motor and the speed reducer, the driving wheel supporting plate lifting unit rotating part (27.1) is connected with the base plate (1) or the test supporting platform (5), the output end of the turbine box (27.2) can be lifted or stopped by adjusting the driving wheel supporting plate lifting unit rotating part (27.1), the output end of the turbine box (27.2) can drive the driving wheel supporting plate (3) which is contacted with or connected with the turbine box to lift or stop, and the driving wheel supporting plate lifting unit (27) can also be of a structure similar to the power supporting plate lifting unit (6).

Further, the lower clutch unit (7) is composed of a lower clutch unit supporting piece (7.1), a lower clutch rotating piece (7.2) and a lower clutch unit supporting piece friction plate (7.3), the lower clutch unit supporting piece (7.1) and the lower clutch unit supporting piece friction plate (7.3) are connected with the lower clutch rotating piece (7.2), the lower clutch unit supporting piece (7.1) is connected with the test supporting platform (5), the lower clutch rotating piece (7.2) is a structural piece with a shaft perpendicular to the plate, the shaft of the lower clutch rotating piece (7.2) can be a whole shaft, or can be a structure with an input shaft and an output shaft of an electromagnetic clutch, a pneumatic clutch, a mechanical clutch or a hydraulic clutch, the lower clutch unit supporting piece (7.1) is provided with one or more bearings, an inner ring of the bearing can be connected with the shaft of the lower clutch rotating piece (7.2), an outer ring of the bearing is connected with the lower clutch unit supporting piece (7.1) or the test supporting platform (5), the lower clutch rotating piece (7.2) is provided with an inner ring or a small rotating shaft, and the inner ring of the bearing can move along the axial direction of the lower clutch rotating shaft of the lower clutch rotating unit supporting piece (7.2) but does not move along the lower clutch rotating shaft.

Further, the upper clutch unit (8) is composed of an upper clutch unit support piece friction plate (8.1), an upper clutch rotating piece (8.2) and an upper clutch unit support piece (8.3), the upper clutch unit support piece friction plate (8.1) and the upper clutch unit support piece (8.3) are connected with the upper clutch rotating piece (8.2), the upper clutch rotating piece (8.2) is a structural piece with a fixed shaft perpendicular to a plate, one or more bearings are arranged in the lower clutch unit support piece (7.1), an inner ring of each bearing can be fixed with the shaft of the upper clutch rotating piece (8.2), an outer ring of each bearing can be fixed on the upper clutch unit support piece (8.3) or the power supporting plate (9), the loading force and the loading speed of the high-speed tensile test device can be adjusted by adjusting or changing the mass of the upper clutch rotating piece (8.2), the loading force and the loading speed of the high-speed tensile test device can be adjusted by adjusting or changing the mass of the components fixed on the power supporting plate (9), and the loading force and the high-speed tensile test device can be increased by adjusting the loading force and the loading speed of the high-speed tensile test device.

Furthermore, the high-speed stretching clamp (11) is composed of a clamp body connecting shaft (11.1), a clamp body (11.2), a cylindrical pin shaft (11.3), a screw column nut (11.4), a screw column (11.5), a flat pressing block (11.6), a round through hole (11.7), a T-shaped groove (11.8), a groove push-pull block (11.9), a flat pressing block push-pull rod (11.10) and a flat pressing block pull rod fastening head (11.11), the clamp body connecting shaft (11.1), the cylindrical pin shaft (11.3) and the screw column (11.5) are connected with the clamp body (11.2), an L-shaped horizontal plane and a longitudinal plane are arranged on the clamp body (11.2), the flat pressing block push-pull rod (11.10) is connected with a threaded hole in the clamp body (11.2), the screw column nut (11.4) is connected with the screw column (11.5), the flat pressing block (11.6) is provided with the round through hole (11.7) and the T-shaped push-pull block (11.8), the flat pressing block push-pull rod (11.10) is connected with the flat pressing block push-pull rod (11.10) or the flat pressing block push-pull rod (11.10) is connected with the flat pressing block push-pull rod (11.10) which is a screw thread which is fixed on the flat pressing block push-pull rod (11.9).

Furthermore, the driving unit (18) is mainly composed of a motor and a coupler, the motor can be a servo motor, a stepping motor, an asynchronous motor, a synchronous motor and other motors, the coupler connects the motor shaft with the shaft of the upper clutch rotating piece (8.2), the motor of the driving unit (18) is connected with the power supporting plate (9), the kinetic energy generated by the motor is transmitted by generating pressure and friction between the upper clutch unit (8) and the lower clutch unit (7), the distance between the upper cross beam (19) and the lower cross beam (22) can be increased or decreased by selecting different motor rotation directions, and the loading force and the loading speed of the high-speed tensile testing device can be adjusted by adjusting the motor rotation speed of the driving unit (18).

Further, the crossbeam stroke limiting unit (13) is composed of a crossbeam stroke limiting unit movable connecting piece (13.1), a crossbeam stroke limiting unit guide rod (13.2) and a crossbeam stroke limiting unit adjustable positioning block (13.3), the crossbeam stroke limiting unit movable connecting piece (13.1) is connected with a linear bearing or provided with a round hole, the crossbeam stroke limiting unit movable connecting piece (13.1) is connected with an upper crossbeam (19) or a lower crossbeam (22), the crossbeam stroke limiting unit movable connecting piece (13.1) is suitable for tensile test when connected with the upper crossbeam (19), the crossbeam stroke limiting unit movable connecting piece (13.1) is suitable for compression, impact or bending test when connected with the lower crossbeam (22), the crossbeam stroke limiting unit guide rod (13.2) can penetrate through the linear bearing or the round hole connected to the crossbeam stroke limiting unit movable connecting piece (13.1), the crossbeam stroke limiting unit guide rod (13.2) is connected with a power supporting plate (9), the crossbeam stroke limiting unit adjustable positioning block (13.3) can be uniformly distributed on the crossbeam stroke limiting unit movable connecting piece (13.2), and the crossbeam stroke limiting unit movable limiting block can be provided with a set of multiple stroke limiting blocks or a round guide ring, and the crossbeam stroke limiting unit movable limiting block (13.3) can be uniformly distributed through holes.

Further, the beam stroke terminal limiting block (14) is connected with a beam stroke limiting unit guide rod (13.2), and can block the beam stroke limiting unit adjustable positioning block (13.3), the beam stroke limiting unit movable connecting piece (13.1) or a linear bearing on the beam stroke limiting unit movable connecting piece (13.1) when the beam stroke limiting unit adjustable positioning block (13.3) fails or is operated by mistake, so as to carry out secondary limiting protection high-speed tensile test device.

Furthermore, the test ball screw (17) is provided with threads with opposite rotation directions, two nuts with opposite rotation directions are arranged on the test ball screw (17), the two nuts which limit rotation can move in opposite directions when the screw rotates, and one or more test ball screws (17) are arranged.

Further, the structure of double moving beams is adopted, and the rotation of the ball screw can enable the upper beam (19) and the lower beam (22) to simultaneously move in opposite directions.

Furthermore, the driving wheel (24) is connected with a shaft of the lower clutch rotating piece (7.2), the driven wheel (25) is connected with the test ball screw (17), the driving wheel (24) and the driven wheel (25) are straight gears, the number of teeth of the driven wheel (25) is equal, the driving wheel (24) and the driven wheel (25) are in a meshing state, and the driving wheel (24) can drive the driven wheel (25) to rotate after rotating.

Furthermore, the driving wheel (24) is connected with a shaft of the lower clutch rotating piece (7.2), the driven wheel (25) is connected with the test ball screw (17), the driving wheel (24) and the driven wheel (25) can also be synchronous belt pulleys, when the driving wheel and the driven wheel are synchronous belt pulleys, the driving wheel (24) and the driven wheel (25) are connected through a synchronous belt, and the number of teeth of the driven wheel (25) is equal.

Further, the crossbeam stroke adjusting unit (23) mainly comprises a crossbeam stroke adjusting unit rotating part (23.1), a crossbeam stroke adjusting shaft (23.2) and a crossbeam stroke adjusting rotating wheel (23.3), the crossbeam stroke adjusting shaft (23.2) is connected with the bottom plate (1) or the test supporting platform (5) through a bearing seat or a bearing, the crossbeam stroke adjusting shaft (23.2) can be simultaneously connected with the bottom plate (1) and the test supporting platform (5) through the bearing seat or the bearing, the crossbeam stroke adjusting rotating wheel (23.3) is connected with the crossbeam stroke adjusting shaft (23.2), the crossbeam stroke adjusting unit rotating part (23.1) can be a hand wheel, a motor or a combination of the motor and a speed reducer, if the crossbeam stroke adjusting unit rotating part (23.1) is a motor or a combination of the motor and the speed reducer, the motor or a combination of the motor and the motor is a straight-tooth wheel (7.2), and a lower clutch rotating wheel (7) can be additionally connected with a driving wheel (7.2) and a straight-tooth wheel (7) which is a driven wheel, and a straight-tooth wheel (7) which is a straight tooth wheel which is meshed with a straight-tooth wheel which is meshed with a driving wheel and is also connected with a straight-tooth wheel (7) and a straight tooth wheel which is meshed with a straight tooth wheel, the crossbeam stroke adjustment runner (23.3) also is a synchronizing wheel, a synchronizing wheel needs to be added and fixed on a rotatable shaft of the lower clutch rotating piece (7.2), the synchronizing wheel of the crossbeam stroke adjustment runner (23.3) is connected with the synchronizing wheel added and fixed on the lower clutch rotating piece (7.2) through a synchronous belt, and when the upper clutch unit (8) and the lower clutch unit (7) are in a separated state, the crossbeam stroke adjustment unit (23) can also be used as a power part of a high-speed tensile test device to finally drive the upper crossbeam (19) and the lower crossbeam (22) to move so as to realize tests such as stretching, compressing, impacting and bending.

Further, drive wheel backup pad guide bar (28) can pass the fixed linear bearing on drive wheel backup pad (3) and power backup pad (9) or correspond the board on the round hole of opening, drive wheel backup pad guide bar (28) can link to each other with bottom plate (1) and experimental supporting platform (5), drive wheel backup pad (3) are located between bottom plate (1) and experimental supporting platform (5), drive wheel backup pad setting element (26) one end links to each other with drive wheel backup pad (3), drive wheel backup pad setting element (26) other end links to each other with experimental supporting platform (5) or bottom plate (1), can guarantee drive wheel backup pad (3) and experimental supporting platform (5) and bottom plate (1) relative position's fixed.

Further, when the driving wheel (24) and the driven wheel (25) are gears and the distance between the lower clutch unit (7) and the upper clutch unit (8) is smaller than the tooth widths of the driving wheel (24) and the driven wheel (25), the driving wheel supporting plate lifting unit (27) is adjusted until the lower clutch unit (7) and the upper clutch unit (8) are attached, at the moment, the driving wheel (24) slides for a certain distance along the tooth surface of the driven wheel (25), and the driving wheel (24) and the driven wheel (25) are still in a state that partial tooth surfaces are meshed with each other after sliding, so that the attachment of the lower clutch unit (7) and the upper clutch unit (8) can be realized, and friction force is generated.

Compared with the prior art, the utility model, following beneficial effect has:

1. the utility model discloses well adoption motor provides power for high-speed stretching device, belongs to electronic type test device, compares in the high-speed stretching device of fluid pressure type, the utility model has the advantages of simple overall structure, no high-pressure hydraulic pressure components and parts, convenient operation, it is simple to maintain, and the measuring accuracy is high, and is with low costs, and energy-concerving and environment-protective, the occupation of land space is few.

2. The utility model discloses a two moving beam structure, current testing machine all are fixed sample one end, to the loading of the sample other end and make it remove, the utility model discloses in two moving beam can load simultaneously and remove, atress, removal and the deformation state in the space of some samples of reaction that can be more true.

3. The utility model discloses well adoption special separation and reunion functional structure not only can provide higher loading speed in the short time, can also improve high-speed stretching device's security by a wide margin according to the power take off of crossbeam displacement volume automatic interruption high-speed stretching device.

4. The utility model discloses the part power motor who well adopts has fine synchronization characteristic, the homogeneity of assurance loading rate that can be better.

5. The utility model discloses in have adjustable loading power of multiple mode and loading speed, can provide and compare in the bigger loading speed scope of the high-speed stretching device of fluid pressure type.

6. The utility model discloses can also realize high-speed compression, high-speed impact or high-speed bending etc. experiment, the test range is more extensive.

Drawings

FIG. 1 is a schematic structural view of a high-speed tensile testing apparatus of the present invention;

fig. 2 is a schematic back structural view of the high-speed tensile testing apparatus of the present invention;

FIG. 3 is a schematic view of the power support plate lifting unit of the present invention;

fig. 4 is a schematic view of the middle and lower clutch units of the present invention;

fig. 5 is a schematic view of an upper clutch unit in the present invention;

fig. 6 is a schematic view of a high-speed stretching jig according to the present invention;

fig. 7 is a schematic view of the middle cross beam stroke limiting unit of the present invention;

fig. 8 is a schematic view of the middle cross beam stroke adjusting unit of the present invention;

fig. 9 is a schematic view of the driving wheel supporting plate lifting unit of the present invention;

the parts in the drawings are marked as follows: the device comprises a bottom plate (1), a supporting and fixing part (2), a driving wheel supporting plate (3), a power supporting plate guide rod (4), a test supporting platform (5), a power supporting plate lifting unit (6), a power supporting plate lifter moving part (6.1), a power supporting plate lifter (6.2), a lower clutch unit (7), a lower clutch unit supporting part (7.1), a lower clutch rotating part (7.2), a lower clutch unit supporting part friction plate (7.3), an upper clutch unit (8), an upper clutch unit supporting part friction plate (8.1), an upper clutch rotating part (8.2), an upper clutch unit supporting part (8.3), a power supporting plate (9), a linear bearing (10) the device comprises a high-speed stretching clamp (11), a clamp body connecting shaft (11.1), a clamp body (11.2), a cylindrical pin shaft (11.3), a screw post nut (11.4), a screw post (11.5), a flat pressing block (11.6), a round through hole (11.7), a T-shaped groove (11.8), a shaped groove push-pull block (11.9), a flat pressing block push-pull rod (11.10), a flat pressing block pull rod fastening head (11.11), a sample (12), a beam stroke limiting unit (13), a beam stroke limiting unit movable connecting piece (13.1), a beam stroke limiting unit guide rod (13.2), a beam stroke limiting unit adjustable positioning block (13.3), a beam stroke terminal limiting block (14), the device comprises a top beam (15), a test guide polish rod (16), a test ball screw (17), a driving unit (18), an upper cross beam (19), a force sensor (20), a strain measurement unit (21), a lower cross beam (22), a cross beam stroke adjustment unit (23), a cross beam stroke adjustment unit rotating part (23.1), a cross beam stroke adjustment shaft (23.2), a cross beam stroke adjustment rotating wheel (23.3), a driving wheel (24), a driven wheel (25), a driving wheel supporting plate positioning part (26), a driving wheel supporting plate lifting unit (27), a driving wheel supporting plate lifting unit rotating part (27.1), a turbine box (27.2), a driving wheel supporting plate guide rod (28) and a foot cup (29).

Detailed Description

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying any importance to the description or an implicit indication of the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

Please refer to fig. 1-9, the utility model provides a high-speed tensile test device, by bottom plate (1), support mounting (2), action wheel backup pad (3), power backup pad guide bar (4), experimental supporting platform (5), power backup pad lift unit (6), lower clutch unit (7), go up clutch unit (8), power backup pad (9), linear bearing (10), high-speed tensile anchor clamps (11), sample (12), crossbeam stroke spacing unit (13), crossbeam stroke terminal stopper (14), back timber (15), experimental direction polished rod (16), experimental ball screw (17), drive unit (18), entablature (19), force transducer (20), strain measurement unit (21), bottom end rail (22), crossbeam stroke adjustment unit (23), action wheel (24), follow driving wheel (25), action wheel backup pad setting element (26), action wheel backup pad lift unit (27), action wheel backup pad guide bar (28) and foot cup (29), its characterized in that: the foot cup (29) and the supporting and fixing part (2) are connected with the bottom plate (1), the power supporting plate guide rod (4) is connected with the bottom plate (1) or the test supporting platform (5), the power supporting plate lifting unit (6) is connected with the test supporting platform (5) or the bottom plate (1), the test supporting platform (5) is connected with the supporting and fixing part (2), the lower clutch unit (7) is connected with the test supporting platform (5), the lower clutch unit (7) is connected with the driving wheel supporting plate (3), the upper clutch unit (8) and the driving unit (18) are connected with the power supporting plate (9), the linear bearing (10) is connected with the power supporting plate (9), the cross beam stroke limiting unit (13) is connected with the power supporting plate (9) and the cross beam stroke terminal limiting block (14), the test guide polished rod (16) is connected with the test supporting platform (5) or the bottom plate (1), the top beam (15) is connected with the test guide polished rod (16), the test ball screw (17) is connected with the test supporting platform (5) or the bottom plate (1), the test guide polished rod (17) is connected with the test ball screw (17) and the test guide rod (17), the force sensor (20) is connected with the upper cross beam (19) or the lower cross beam (22), the force sensor (20) is connected with the high-speed stretching clamp (11), the high-speed stretching clamp (11) is connected with the upper cross beam (19) or the lower cross beam (22), the cross beam stroke adjusting unit (23) is connected with the bottom plate (1) or the test supporting platform (5), the driving wheel (24) is connected with the lower clutch unit (7), the driven wheel (25) is connected with the test ball screw (17), the sample (12) is connected with the high-speed stretching clamp (11), the strain measuring unit (21) is over against the sample (12) or is connected with the sample (12), the driving wheel supporting plate positioning piece (26) is connected with the bottom plate (1) or the test supporting platform (5), the driving wheel supporting plate positioning piece (26) is connected with the driving wheel supporting plate (3), the driving wheel lifting unit (27) is connected with the bottom plate (1) or the test supporting platform (5), and the supporting plate guide rod (28) is connected with the driving wheel bottom plate (1) or the test supporting platform (5).

Experimental supporting platform (5) have constituted the rigid frame through a plurality of support mounting (2) and bottom plate (1), support mounting (2) can be both ends step external screw thread type axle, both ends step internal thread type axle, both ends internal thread type axle or one end step external screw thread other end internal thread type axle, behind the nut or the screw at locking both ends, bottom plate (1) and experimental supporting platform (5) terminal surface are parallel.

The power supporting plate lifting unit (6) is composed of a power supporting plate lifter moving piece (6.1) and a power supporting plate lifter (6.2), the power supporting plate lifter (6.2) is connected with the bottom plate (1) or the test supporting platform (5), the power supporting plate lifter (6.2) can be a turbine lifter, an electric cylinder, an electric push rod, an air cylinder, a hydraulic cylinder and other parts, the power supporting plate lifter moving piece (6.1) is connected with the power supporting plate (9), and the power supporting plate (9) can be lifted, lowered or stopped through the power supporting plate lifter (6.2).

The device is characterized in that the driving wheel supporting plate lifting unit (27) is composed of a driving wheel supporting plate lifting unit rotating part (27.1) and a turbine box (27.2), the driving wheel supporting plate lifting unit rotating part (27.1) is connected with the turbine box (27.2), the turbine box (27.2) is connected with the base plate (1) or the test supporting platform (5), the driving wheel supporting plate lifting unit rotating part (27.1) can be a hand wheel, a motor or a combination of the motor and a speed reducer, when the driving wheel supporting plate lifting unit rotating part (27.1) is a combination of the motor or the motor and the speed reducer, the driving wheel supporting plate lifting unit rotating part (27.1) is connected with the base plate (1) or the test supporting platform (5), the output end of the turbine box (27.2) can be lifted or stopped by adjusting the driving wheel supporting plate lifting unit rotating part (27.1), the output end of the turbine box (27.2) can drive the driving wheel supporting plate (3) which is in contact with or connected with the turbine box to lift or stop, and the driving wheel supporting plate lifting unit (27) can also be of a structure similar to the power supporting plate lifting unit (6).

The lower clutch unit (7) is composed of a lower clutch unit supporting piece (7.1), a lower clutch rotating piece (7.2) and a lower clutch unit supporting piece friction plate (7.3), the lower clutch unit supporting piece (7.1) and the lower clutch unit supporting piece friction plate (7.3) are connected with the lower clutch rotating piece (7.2), the lower clutch unit supporting piece (7.1) is connected with the test supporting platform (5), the lower clutch rotating piece (7.2) is a structural piece with a shaft vertical to the plate, the shaft of the lower clutch rotating piece (7.2) can be a whole shaft, or can be an electromagnetic clutch, a pneumatic clutch, a mechanical clutch or a hydraulic clutch structure with an input shaft and an output shaft, the lower clutch unit supporting piece (7.1) is provided with one or more bearings, an inner ring of the bearing can be connected with the shaft of the lower clutch rotating piece (7.2), an outer ring of the bearing is connected with the lower clutch unit supporting piece (7.1) or the test supporting platform (5), a rotating shaft of the lower clutch rotating piece (7.2) is provided with a hole or a groove, the inner ring of the lower clutch rotating piece (7.2) can be inserted into the bearing, and the lower clutch unit supporting piece can not move along the axial direction of the rotating shaft, and the rotating shaft of the lower clutch rotating unit supporting piece (7.2) can move along the smaller clutch rotating shaft or the smaller rotating shaft.

The upper clutch unit (8) is composed of an upper clutch unit support piece friction plate (8.1), an upper clutch rotating piece (8.2) and an upper clutch unit support piece (8.3), the upper clutch unit support piece friction plate (8.1) and the upper clutch unit support piece (8.3) are connected with the upper clutch rotating piece (8.2), the upper clutch rotating piece (8.2) is a structural part with a shaft fixed perpendicular to a plate, one or more bearings are arranged in the lower clutch unit support piece (7.1), an inner ring of each bearing can be fixed with the shaft of the upper clutch rotating piece (8.2), an outer ring of each bearing can be fixed on the upper clutch unit support piece (8.3) or a power support plate (9), the loading force and the loading speed of the high-speed tensile test device can be adjusted by adjusting or changing the mass of the upper clutch rotating piece (8.2), the loading force and the loading speed of the high-speed tensile test device can be adjusted by adjusting or changing the mass of the components fixed on the power support plate (9) and the power support plate (9), the loading force and the loading speed of the high-speed tensile test device can be adjusted by increasing or decreasing the loading force of the dynamic support plate (7), and the dynamic load unit loading force and the loading efficiency of the high-speed tensile test device can be increased, and the loading of the dynamic load can be reduced by adjusting the dynamic load.

The high-speed stretching clamp (11) is composed of a clamp body connecting shaft (11.1), a clamp body (11.2), a cylindrical pin shaft (11.3), a screw rod column nut (11.4), a screw rod column (11.5), a flat pressing block (11.6), a round through hole (11.7), a T-shaped groove (11.8), a shaped groove push-pull block (11.9), a flat pressing block push-pull rod (11.10) and a flat pressing block pull rod fastening head (11.11), the clamp body connecting shaft (11.1), the cylindrical pin shaft (11.3) and the screw rod column (11.5) are connected with the clamp body (11.2), an L-shaped horizontal plane and a longitudinal plane are arranged on the clamp body (11.2), the flat pressing block push-pull rod (11.10) is connected with a threaded hole on the clamp body (11.2), the screw rod nut (11.4) is connected with the screw rod column (11.5), the flat pressing block (11.6) is provided with the round through hole (11.7) and the T-pressing block (11.8), the flat pressing block push-pull rod (11.9) is connected with the flat pressing block push-pull rod (11.10), the flat pressing block (11.9) or the flat pressing block (11.10) is connected with the flat pressing block (11.5) and the flat pressing block (11.9) and the flat pressing block (11.10), the screw rod column nut (11.4) is screwed, the sample (12) is tightly pressed on the longitudinal pressing surface of the clamp body (11.2) through the flat pressing block (11.6), the Ping Yakuai pull rod fastening head (11.11) is screwed, the flat pressing block (11.6) can be connected with the clamp body (11.2), tensile resistance can be provided for two side surfaces of the plate sample, and zero-gap plane clamping of the plate sample pin-penetrating clamp is realized.

The driving unit (18) is mainly composed of a motor and a coupler, the motor can be a servo motor, a stepping motor, an asynchronous motor, a synchronous motor and the like, the coupler connects a motor shaft with a shaft of the upper clutch rotating piece (8.2), the motor of the driving unit (18) is connected with the power supporting plate (9), the loading force and the loading speed of the high-speed tensile testing device can be adjusted by adjusting the rotating speed of the motor of the driving unit (18), if the motor of the driving unit (18) is the synchronous motor, the rotating speed of the motor is fixed due to the fact that the frequency of the synchronous motor is fixed, the rotating speed of the motor does not change along with the load, speed consistency during testing can be well improved on the power output level, and uniformity of the loading speed can be well guaranteed.

The crossbeam stroke limiting unit (13) consists of a crossbeam stroke limiting unit movable connecting piece (13.1), a crossbeam stroke limiting unit guide rod (13.2) and a crossbeam stroke limiting unit adjustable positioning block (13.3), a linear bearing is connected to the crossbeam stroke limiting unit movable connecting piece (13.1) or a round hole is formed in the crossbeam stroke limiting unit movable connecting piece, the crossbeam stroke limiting unit movable connecting piece (13.1) is connected with an upper crossbeam (19) or a lower crossbeam (22), a tensile test is suitable for being performed when the crossbeam stroke limiting unit movable connecting piece (13.1) is connected with the upper crossbeam (19), a compression test, an impact test or a bending test is suitable for being performed when the crossbeam stroke limiting unit movable connecting piece (13.1) is connected with the lower crossbeam (22), the crossbeam stroke limiting unit guide rod (13.2) can penetrate through the linear bearing or the round hole connected to the crossbeam stroke limiting unit movable connecting piece (13.1), the crossbeam stroke limiting unit guide rod (13.2) is connected with the power supporting plate (9), the crossbeam stroke limiting unit adjustable positioning block (13.3) can be fixed on the crossbeam stroke limiting unit guide rod (13.2) or the crossbeam stroke limiting unit movable connecting piece (13.2) and can be fixed by the crossbeam stroke limiting unit guide rod or the crossbeam stroke limiting unit movable connecting piece (13.2) when the crossbeam stroke limiting unit movable connecting piece (13.1) is contacted with the round hole, the round guide rod, the round limiting unit movable connecting piece (13.2) after the crossbeam stroke limiting unit movable connecting piece (13.2), can drive crossbeam stroke spacing unit guide bar (13.2) and power backup pad (9) and move together, go up clutch unit (8) and also can follow power backup pad (9) and move together, lower clutch unit (7) and last clutch unit (8) separation, lower clutch unit (7) and last clutch unit (8) lose frictional force, thereby realized the purpose of automatic termination drive unit (18) power take-off, it is a mode that the power that produces through the removal of upper beam (19) or lower beam (22) finally makes lower clutch unit (7) and last clutch unit (8) separation, crossbeam stroke spacing unit (13) can be one set also can the equipartition many sets.

The crossbeam stroke terminal limiting block (14) is connected with the crossbeam stroke limiting unit guide rod (13.2), and can block the crossbeam stroke limiting unit adjustable positioning block (13.3), the crossbeam stroke limiting unit movable connecting piece (13.1) or a linear bearing on the crossbeam stroke limiting unit movable connecting piece (13.1) when the crossbeam stroke limiting unit adjustable positioning block (13.3) fails or is misoperated so as to carry out secondary limiting protection on the high-speed tensile test device.

One end of the test guide polish rod (16) is connected with the top beam (15), the other end of the test guide polish rod is connected with the test supporting platform (5) or the bottom plate (1), the middle part of the test guide polish rod (16) penetrates through the upper cross beam (19) and the lower cross beam (22), and one test guide polish rod (16) or a plurality of test guide polish rods can be uniformly distributed.

The screw threads with opposite rotation directions are arranged on the test ball screw (17), two screw caps with opposite rotation directions are arranged on the test ball screw (17), the two screw caps which limit rotation can move in opposite directions when the screw is rotated, and the number of the test ball screws (17) is multiple.

The test device adopts a double-moving-beam structure, the rotation of a ball screw can enable an upper beam (19) and a lower beam (22) to move in opposite directions at the same time, and the upper beam (19) and the lower beam (22) are connected with linear bearings through which a test guide polished rod (16) can pass or are provided with round holes.

The driving wheel (24) is connected with a shaft of the lower clutch rotating piece (7.2), the driven wheel (25) is connected with the test ball screw (17), the driving wheel (24) and the driven wheel (25) are straight gears, the number of teeth of the driven wheel (25) is equal, the driving wheel (24) and the driven wheel (25) are in a meshing state, and the driving wheel (24) can drive the driven wheel (25) to rotate after rotating.

The driving wheel (24) is connected with a shaft of the lower clutch rotating part (7.2), the driven wheel (25) is connected with the test ball screw (17), the driving wheel (24) and the driven wheel (25) can also be synchronous pulleys, when the driving wheel and the driven wheel are synchronous pulleys, the driving wheel (24) and the driven wheel (25) are connected by a synchronous belt, and the number of teeth of the driven wheel (25) is equal.

The crossbeam stroke adjusting unit (23) mainly comprises a crossbeam stroke adjusting unit rotating part (23.1), a crossbeam stroke adjusting shaft (23.2) and a crossbeam stroke adjusting rotating wheel (23.3), the crossbeam stroke adjusting shaft (23.2) is connected with the bottom plate (1) or the test supporting platform (5), the crossbeam stroke adjusting shaft (23.2) can also be connected with the bottom plate (1) and the test supporting platform (5), the crossbeam stroke adjusting rotating wheel (23.3) is connected with the crossbeam stroke adjusting shaft (23.2), the crossbeam stroke adjusting unit rotating part (23.1) can be a hand wheel, a motor or a combination of the motor and a speed reducer, if the crossbeam stroke adjusting unit rotating part (23.1) is the motor or the combination of the motor and the speed reducer, the combination of the motor or the motor and the speed reducer is connected with the bottom plate (1) or the test supporting platform (5), if the driving wheel (24) and the driven wheel (25) are straight gears, the crossbeam stroke adjusting unit rotating part (23.3) is also a straight gear, the crossbeam stroke adjusting unit can be meshed with the rotating wheel (23.2) and the lower stroke adjusting gear (23.7) can be meshed with the lower gear and the lower gear (7) can be further meshed with the lower gear and the lower gear (7) which is meshed with the lower gear and can be meshed with the lower gear, the crossbeam stroke adjustment runner (23.3) is also a synchronizing wheel, a synchronizing wheel is required to be additionally arranged and fixed on a rotatable shaft of the lower clutch rotating piece (7.2), the synchronizing wheel of the crossbeam stroke adjustment runner (23.3) is connected with the synchronizing wheel additionally arranged and fixed on the lower clutch rotating piece (7.2) through a synchronous belt, the crossbeam stroke adjustment shaft (23.2) and the crossbeam stroke adjustment runner (23.3) can be driven to rotate by adjusting a rotating part (23.1) of the crossbeam stroke adjustment unit, so that a driving wheel (24) is driven to rotate, and finally distance change between the upper crossbeam (19) and the lower crossbeam (22) is realized to adjust a test space, and when the upper clutch unit (8) and the lower clutch unit (7) are in a separated state, the crossbeam stroke adjustment unit (23) can also be used as a power part of a high-speed tensile test device to finally drive the upper crossbeam (19) and the lower crossbeam (22) to move so as to realize tests of stretching, compression, impact, bending and the like.

The round hole that opens on the fixed linear bearing or the corresponding plate on action wheel backup pad guide bar (28) can pass action wheel backup pad (3) and power backup pad (9), action wheel backup pad guide bar (28) can link to each other with bottom plate (1) and experimental supporting platform (5), action wheel backup pad (3) are located between bottom plate (1) and experimental supporting platform (5), action wheel backup pad setting element (26) one end links to each other with action wheel backup pad (3), action wheel backup pad setting element (26) other end links to each other with experimental supporting platform (5) or bottom plate (1), can guarantee the fixed of action wheel backup pad (3) and experimental supporting platform (5) and bottom plate (1) relative position.

The motor on the driving unit (18) is adjusted to a required rotating speed, the motor on the driving unit (18) drives the upper clutch rotating piece (8.2) and the friction piece (8.1) of the support piece of the upper clutch unit to rotate together, the power support plate lifter (6.2) is controlled to descend manually or electrically, the moving piece (6.1) of the power support plate lifter and the power support plate (9) lose support and move downwards until the friction piece (7.3) of the support piece of the lower clutch unit is attached to the friction piece (8.1) of the support piece of the upper clutch unit, friction force is generated between the friction piece (7.3) of the support piece of the lower clutch unit and the friction piece (8.1) of the support piece of the upper clutch unit, so as to drive the lower clutch rotating piece (7.2) to rotate together, so as to drive the driving wheel (24) coaxial with the lower clutch unit (7) to rotate, the driving wheel (24) drives the driven wheel (25) to rotate, the two driven wheels (25) respectively drive the test balls (17) to drive the upper cross beam (19) and the lower cross beam (22) to rotate coaxially, so as to adjust the distance between the upper cross beam (19) and the lower cross beam (7) to reduce the distance between the friction force generated by the friction piece of the upper clutch unit, and the lower cross beam (7) and the motor, so as to select the upper clutch unit to reduce the distance between the upper cross beam (19) and the lower cross beam (7) to reduce the distance between the friction force generated by the friction unit, tensile, compressive, impact or bending test functions can be realized by matching with a proper clamp and selecting proper motor steering.

When the driving wheel (24) and the driven wheel (25) are gears and the distance between the lower clutch unit (7) and the upper clutch unit (8) is smaller than the tooth widths of the driving wheel (24) and the driven wheel (25), the driving wheel supporting plate lifting unit (27) is adjusted until the lower clutch unit (7) is attached to the upper clutch unit (8), the driving wheel (24) slides for a certain distance along the tooth surface of the driven wheel (25), the driving wheel (24) and the driven wheel (25) are still in a state that partial tooth surfaces are meshed with each other after sliding, and the attachment of the lower clutch unit (7) and the upper clutch unit (8) can be achieved and friction force is generated.

The utility model discloses a theory of operation and working process as follows:

installing a lower clutch unit supporting piece (7.1), a lower clutch rotating piece (7.2), a lower clutch unit supporting piece friction plate (7.3), an upper clutch unit supporting piece friction plate (8.1), an upper clutch rotating piece (8.2) and an upper clutch unit supporting piece (8.3) according to requirements, wherein the lower clutch unit supporting piece friction plate (7.3) and the upper clutch unit supporting piece friction plate (8.1) are in a separated state, manually or electrically controlling the power supporting plate lifter (6.2) to descend, the power supporting plate lifter moving piece (6.1) and the power supporting plate (9) lose support and move towards the direction of a test supporting platform (5) until the lower clutch unit supporting piece friction plate (7.3) and the upper clutch unit supporting piece friction plate (8.1) are attached, pressure is generated between the lower clutch unit supporting piece friction plate (7.3) and the upper clutch unit supporting piece friction plate (8.1), the lower clutch unit supporting piece (7.3) and the upper clutch unit supporting piece friction plate (8.1) cannot relatively rotate due to friction force, controlling a driving unit (18) and an upper clutch unit (8.1) and a lower clutch unit (7) to drive a lower clutch unit (17) to rotate together, and a lower clutch unit (17) to drive a coaxial clutch unit (17) to rotate, the upper cross beam (19) and the lower cross beam (22) are connected with screw nuts, the screwing directions of two screw nut threads on the upper cross beam (19) are consistent, the screwing directions of two screw nut threads on the lower cross beam (19) are consistent, the screwing directions of the fixed screw nut threads on the upper cross beam (19) and the lower cross beam (22) are opposite, and the rotation of the test ball screw (17) can enable the upper cross beam (19) and the lower cross beam (22) to move in opposite directions, so that the distance between the upper cross beam (19) and the lower cross beam (22) is adjusted.

If the lower clutch unit (7) and the upper clutch unit (8) are far away from each other and cannot be attached to each other by adjusting the power support plate lifting unit (6), the cross beam stroke adjusting unit (23) can be manually or electrically adjusted, the cross beam stroke adjusting unit rotating part (23.1) is controlled to rotate, a cross beam stroke adjusting shaft (23.2) and a cross beam stroke adjusting rotating wheel (23.3) which are connected with the cross beam stroke adjusting unit rotating part can rotate together, the cross beam stroke adjusting rotating wheel (23.3) directly or indirectly drives a driving wheel (24) which is meshed with or connected with the cross beam stroke adjusting rotating wheel to rotate, the driving wheel (24) drives a driven wheel (25) to rotate, the two driven wheels (25) respectively drive a test ball screw rod (17) which is coaxial with the driven wheel to rotate, screw rod nuts are fixed on the upper cross beam (19) and the lower cross beam (22), the two screw rod nut threads on the upper cross beam (19) rotate in the same direction, the upper screw rod nut threads on the lower cross beam (19) are fixed on the upper cross beam (19) and the lower cross beam (22), and the upper cross beam (17) can rotate in the opposite directions, and the upper cross beam (22) can rotate in the opposite directions, and the lower cross beam (17).

Adjusting the distance between an upper cross beam (19) and a lower cross beam (22) until the distance between an upper part and a lower part of a high-speed stretching clamp (11) is suitable for clamping a sample (12), taking down a flat pressing block (11.6), loading the sample (12) into a clamp body (11.2) according to the axial direction of a cylindrical pin shaft (11.3), enabling the cylindrical pin shaft (11.3) and a screw column (11.5) to penetrate through a corresponding round hole on the sample (12), loading the flat pressing block (11.6) into the clamp body (11.2) according to the axial direction of the cylindrical pin shaft (11.3), enabling the cylindrical pin shaft (11.3) and the screw column (11.5) to penetrate through a round through hole (11.7) on the flat pressing block (11.6), enabling a profiled groove push-pull block (11.9) to enter a transverse groove of a T-shaped groove (11.8), enabling a flat pressing block (11.10) to enter a longitudinal groove of the T-shaped groove (11.8), locking screw column nuts (11.4) to enable the flat pressing block (11.6) to tightly press the sample (11.3) along the axial direction, enabling the flat pressing block (11.6) to be tightly attached to the two sides of the sample to be tight pin shaft (11.8), and providing tensioning force, and enabling the flat pressing block to be tightly attached to the sample (11.6) to be tight groove, and the flat pressing block (11.6) to be tight groove completely, and the flat pressing block to be tight groove, and the flat pressing block (11.6) to be tight groove to be tight.

The strain measurement unit (21) can be a strain and deformation measurement component such as an electronic extensometer, a high-speed camera, a DIC (digital image processor), a video extensometer, a full-automatic extensometer and the like, the strain measurement unit (21) is adjusted to be in a state of measuring and collecting strain or deformation of a sample, a power supporting plate lifter (6.2) is manually or electrically controlled to directly or indirectly drive a power supporting plate lifter moving piece (6.1) and a power supporting plate (9) to ascend, the power supporting plate (9) drives an upper clutch unit (8) to ascend, a lower clutch unit (7) and the upper clutch unit (8) are separated, and a lower clutch rotating piece (7.2) is in a structure that the input shaft and the output shaft are driven by the electromagnetic clutch, a pneumatic clutch, a mechanical clutch or a hydraulic clutch, and the electromagnetic clutch, the pneumatic clutch, the mechanical clutch or the hydraulic clutch of the lower clutch rotating piece (7.2) is in a separated state without adjusting the power supporting plate lifter (6.2).

According to the displacement of the sample which is possible to break, the adjustable positioning block (13.3) of the beam stroke limiting unit is fixed at a proper limiting position on the guide rod (13.2) of the beam stroke limiting unit, and the strain measuring unit (21) is adjusted, so that the state that the strain of the sample can be measured at high speed and collected is achieved.

Starting a motor on a driving unit (18), adjusting the motor to a proper rotating speed, automatically starting a strain measurement unit (21), enabling the motor on the driving unit (18) to drive an upper clutch rotating piece (8.2) and an upper clutch unit supporting piece friction plate (8.1) to rotate together, manually or electrically controlling a power supporting plate lifter (6.2) to enable a push plate of the power supporting plate lifter (6.2) to descend, enabling a power supporting plate lifter moving piece (6.1) and a power supporting plate (9) to lose support and move downwards until a lower clutch unit supporting piece friction plate (7.3) and the upper clutch unit supporting piece friction plate (8.1) are attached, enabling pressure and friction force to be generated between a lower clutch unit supporting piece friction plate (7.3) and an upper clutch unit supporting piece friction plate (8.1), enabling the upper clutch rotating piece (8.2) to drive the lower clutch rotating piece (7.2) to rotate together, instantly transferring kinetic energy converted from electric energy of the motor to the lower clutch unit (7), thereby driving a driving wheel (24) of the lower clutch unit (7) to rotate, enabling a coaxial clutch rotating piece (24) to drive a lower clutch rotating piece (19) and a lower clutch unit (17) to drive a ball screw rod (19) to move along with a high-speed test clamp, and a high-speed ball screw rod (17) to drive a high-speed test fixture, wherein the upper cross beam (17) and a lower clutch unit clamp are connected with a driving wheel (17) respectively, when the distance between the upper cross beam (19) and the lower cross beam (22) is continuously increased, a high-speed stretching function is realized, a proper compression, impact or bending clamp is assembled, a corresponding sample is assembled, the steering direction of a motor on the driving unit (18) is adjusted manually or electrically, after the power supporting plate lifter (6.2) is operated to enable the lower clutch unit support piece friction plate (7.3) and the upper clutch unit support piece friction plate (8.1) to be attached, due to the fact that the motor rotates reversely, the testing ball screw rod (17) rotates in the opposite direction, the upper cross beam (19) and the lower cross beam (22) move in the opposite direction to the movement of the upper cross beam (19) and the lower cross beam (22) in a stretching state, namely the distance between the upper cross beam (19) and the lower cross beam (22) is continuously decreased, and the high-speed compression, impact or bending test function can be realized. The lower clutch rotating piece (7.2) is of a structure that an electromagnetic clutch, a pneumatic clutch, a mechanical clutch or a hydraulic clutch is provided with an input shaft and an output shaft, so that the friction plate (7.3) of the support piece of the lower clutch unit and the friction plate (8.1) of the support piece of the upper clutch unit can be jointed and transmit kinetic energy without adjusting the lifter (6.2) of the power supporting plate when the electromagnetic clutch, the pneumatic clutch, the mechanical clutch or the hydraulic clutch of the lower clutch rotating piece (7.2) is in a closed state.

There is also a method to make the friction plate (7.3) of the supporting part of the lower clutch unit and the friction plate (8.1) of the supporting part of the upper clutch unit fit together, the lower clutch rotor (7.2) is a structural part whose axis is perpendicular to the plate, the rotating shaft of the lower clutch rotor (7.2) is provided with a keyway or a through slot along its axial direction, the inner ring of the bearing of the supporting part (7.1) of the lower clutch unit is provided with a pin shaft which can be inserted into a hole or a slot on the rotating shaft of the lower clutch rotor (7.2), it can be realized that the rotating shaft of the lower clutch rotor (7.2) moves axially along the inner ring of the bearing of the supporting part of the lower clutch unit (7.1) without rotating or with a slight angle of rotation, the supporting plate lifting unit (27) of the driving wheel is adjusted to support the driving wheel supporting plate (3), the positioning part (26) of the driving wheel supporting plate is removed, the supporting plate (26) is adjusted, the supporting plate (3) loses the constraint force of the driving wheel upwards, it can move upwards, the driving wheel by adjusting the stroke of the lifting unit (6) of the driving plate or the lifting unit (27) of the driving wheel, the adjusting unit, the lifting unit (23) of the driving plate, the distance between the lower clutch unit (8) of the lower clutch unit and the lower clutch unit (8) is not larger than the distance between the lower clutch unit (25) of the lower clutch unit (24) of the lower clutch unit and the lower clutch unit of the lower clutch unit, the guiding rod (7.1) of the lower clutch unit (7.2), the driving wheel supporting plate (3) can be lifted until the lower clutch unit (7) is attached to the upper clutch unit (8), the driving wheel (24) slides for a certain distance along the tooth surface of the driven wheel (25), the driving wheel (24) and the driven wheel (25) are still in a state that partial tooth surfaces are meshed with each other after sliding, and the attachment of the lower clutch unit (7) and the upper clutch unit (8) can be achieved, and friction force is generated.

When a tensile test is carried out, the crossbeam stroke limiting unit movable connecting piece (13.1) is connected with the upper crossbeam (19), after the upper crossbeam (19) and the lower crossbeam (22) move, a force value is applied to a sample by the high-speed tensile test device, after the sample is broken, the upper crossbeam (19) and the lower crossbeam (22) continue to move, the upper crossbeam (19) drives the crossbeam stroke limiting unit movable connecting piece (13.1) to move, the crossbeam stroke limiting unit movable connecting piece (13.1) moves along the crossbeam stroke limiting unit guide rod (13.2), when the crossbeam stroke limiting unit movable connecting piece (13.1) or a guide bearing and other components fixed on the crossbeam stroke limiting unit movable connecting piece (13.1) touch the crossbeam stroke limiting unit adjustable positioning block (13.3), an upward force is generated on a guide rod (13.2) of the beam stroke limiting unit, the guide rod (13.2) of the beam stroke limiting unit drives a power supporting plate (9) connected with the guide rod to move upwards, the power supporting plate (9) drives an upper clutch unit (8) to move upwards, a lower clutch unit (7) is separated from the upper clutch unit (8), the lower clutch unit (7) and the upper clutch unit (8) lose pressure and friction force, and therefore the purpose of automatically stopping power output of a driving unit (18) is achieved, power transmitted by a motor on the driving unit (18) is immediately stopped being transmitted to the lower clutch unit (7), and rotational inertia generated on a driving wheel (24) and a driven wheel (25) can also enable the upper beam stroke limiting unit to transmit force (19) And the lower cross beam (22) moves for a certain distance, when the cross beam stroke limiting unit movable connecting piece (13.1) is connected with the lower cross beam (22), the pressure test is suitable, after a suitable tool clamp is installed, the high-speed compression, high-speed impact or high-speed bending test can be carried out, the other test processes refer to a tensile test, and the high-speed tensile test device carries out real-time processing on the force value acquired by the force sensor and the displacement and strain data acquired by the strain measurement unit (21).

Generally, a lead screw with a high lead can reach 50mm, the moving speed of 20m/s is required to be realized, under the condition that the lead is 50mm, the test equipment of a single moving beam at least needs 24000 revolutions per minute, because an upper beam (19) and a lower beam (22) of a high-speed tensile test device can be stressed and move simultaneously, the minimum rotating speed required by a test ball screw (17) is 12000 revolutions per minute, and under the condition that the lead is 50mm, the minimum rotating speed required by the test ball screw (17) is 6000 revolutions per minute, the Dm-N value of the test ball screw can reach 300000, the maximum rotating speed can reach over 20000, namely the high-speed tensile test device can provide the moving speed of over 20m/s, at present, some ball screws on the market have lead of 100mm, and the moving speed can be improved by improving the lead.

The existing motor reaches 6000 rpm without problems, and the transmission ratio of the driving wheel (24) and the driven wheel (25) is well controlled, such as the transmission ratio is 1:3, the rotating speed of the test ball screw (17) can be relatively large, the rotating speed of some high-speed motors can reach tens of thousands of revolutions, and the high rotating speed required by the test ball screw (17) can be provided technically.

The above only is the embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structure changes made in the specification and the attached drawings or directly or indirectly applied to other related technical fields are included in the same principle as the present invention.

Claims

1. The utility model provides a high-speed tensile test device, by bottom plate (1), support mounting (2), action wheel backup pad (3), power backup pad guide bar (4), experimental supporting platform (5), power backup pad lift unit (6), lower clutch unit (7), go up clutch unit (8), power backup pad (9), linear bearing (10), high-speed tensile anchor clamps (11), sample (12), crossbeam stroke spacing unit (13), crossbeam stroke terminal stopper (14), back timber (15), experimental direction polished rod (16), experimental ball screw (17), drive unit (18), entablature (19), force transducer (20), strain measurement unit (21), bottom end rail (22), crossbeam stroke adjustment unit (23), action wheel (24), follow driving wheel (25), action wheel backup pad setting element (26), action wheel backup pad lift unit (27), action wheel backup pad guide bar (28) and foot cup (29) constitute, its characterized in that: the foot cup (29) and the supporting and fixing part (2) are connected with the bottom plate (1), the power supporting plate guide rod (4) is connected with the bottom plate (1) or the test supporting platform (5), the power supporting plate lifting unit (6) is connected with the test supporting platform (5) or the bottom plate (1), the test supporting platform (5) is connected with the supporting and fixing part (2), the lower clutch unit (7) is connected with the test supporting platform (5), the lower clutch unit (7) is connected with the driving wheel supporting plate (3), the upper clutch unit (8) and the driving unit (18) are connected with the power supporting plate (9), the linear bearing (10) is connected with the power supporting plate (9), the cross beam stroke limiting unit (13) is connected with the power supporting plate (9) and the cross beam stroke terminal limiting block (14), the test guide polished rod (16) is connected with the test supporting platform (5) or the bottom plate (1), the top beam (15) is connected with the test guide polished rod (16), the test ball screw (17) is connected with the test supporting platform (5) or the bottom plate (1), the test guide polished rod (17) is connected with the test ball screw (17) and the test guide rod (17), the force sensor (20) is connected with the upper cross beam (19) or the lower cross beam (22), the force sensor (20) is connected with the high-speed stretching clamp (11), the high-speed stretching clamp (11) is connected with the upper cross beam (19) or the lower cross beam (22), the cross beam stroke adjusting unit (23) is connected with the bottom plate (1) or the test supporting platform (5), the driving wheel (24) is connected with the lower clutch unit (7), the driven wheel (25) is connected with the test ball screw (17), the sample (12) is connected with the high-speed stretching clamp (11), the strain measuring unit (21) is over against the sample (12) or is connected with the sample (12), the driving wheel supporting plate positioning piece (26) is connected with the bottom plate (1) or the test supporting platform (5), the driving wheel supporting plate positioning piece (26) is connected with the driving wheel supporting plate (3), the driving wheel supporting plate lifting unit (27) is connected with the bottom plate (1) or the test supporting platform (5), and the supporting plate guide rod (28) is connected with the driving wheel bottom plate (1) or the test supporting platform (5).

2. A high speed tensile testing apparatus according to claim 1, wherein: the test supporting platform (5) and the bottom plate (1) form a rigid frame through the plurality of supporting fixing pieces (2), the supporting fixing pieces (2) can be two-end step external thread type shafts, two-end internal thread type shafts or one-end step external thread other-end internal thread type shafts, and after nuts or screws at two ends are locked, the end faces of the bottom plate (1) and the test supporting platform (5) are parallel.

3. A high speed tensile testing apparatus according to claim 1, wherein: power backup pad lift unit (6) comprises power backup pad riser moving member (6.1) and power backup pad riser (6.2), power backup pad riser (6.2) link to each other with bottom plate (1) or experimental supporting platform (5), power backup pad riser (6.2) can be spiral lift, electronic jar, electric putter, cylinder and pneumatic cylinder, power backup pad riser moving member (6.1) links to each other with power backup pad (9), accessible power backup pad riser (6.2) makes power backup pad (9) rise, fall or stop.

4. A high speed tensile testing apparatus according to claim 1, wherein: the driving wheel supporting plate lifting unit (27) is composed of a driving wheel supporting plate lifting unit rotating part (27.1) and a turbine box (27.2), the driving wheel supporting plate lifting unit rotating part (27.1) is connected with the turbine box (27.2), the turbine box (27.2) is connected with the bottom plate (1) or the test supporting platform (5), the driving wheel supporting plate lifting unit rotating part (27.1) can be a hand wheel, a motor or a combination of the motor and a speed reducer, when the driving wheel supporting plate lifting unit rotating part (27.1) is a motor or a combination of the motor and the speed reducer, the driving wheel supporting plate lifting unit rotating part (27.1) is connected with the bottom plate (1) or the test supporting platform (5), the output end of the turbine box (27.2) can be lifted or stopped by adjusting the driving wheel supporting plate lifting unit rotating part (27.1), and the output end of the turbine box (27.2) can drive the driving wheel supporting plate (3) which is in contact with or connected with the turbine box to lift or stop.

5. A high speed tensile test apparatus according to claim 1, wherein: the lower clutch unit (7) is composed of a lower clutch unit supporting piece (7.1), a lower clutch rotating piece (7.2) and a lower clutch unit supporting piece friction plate (7.3), the lower clutch unit supporting piece (7.1) and the lower clutch unit supporting piece friction plate (7.3) are connected with the lower clutch rotating piece (7.2), the lower clutch unit supporting piece (7.1) is connected with the test supporting platform (5), the lower clutch rotating piece (7.2) is a structural piece with a shaft vertical to the plate, the shaft of the lower clutch rotating piece (7.2) is a whole shaft, or an electromagnetic clutch, a pneumatic clutch, a mechanical clutch or a hydraulic clutch is in a structure with an input shaft and an output shaft, the lower clutch unit supporting piece (7.1) is provided with one or more bearings, an inner ring of the bearings can be connected with the shaft of the lower clutch rotating piece (7.2), an outer ring of the bearings is connected with the lower clutch unit supporting piece (7.1) or the test supporting platform (5), a rotating shaft of the lower clutch rotating piece (7.2) is provided with a rotating shaft or a groove, the inner ring of the lower clutch unit supporting piece (7.1) can be inserted into the shaft of the lower clutch rotating unit supporting piece (7.2), and the rotating unit supporting piece can move along the axial direction of the small rotating shaft or the rotating shaft of the rotating shaft, and the rotating unit rotating shaft does not move along the axis.

6. A high speed tensile testing apparatus according to claim 1, wherein: the upper clutch unit (8) is composed of an upper clutch unit supporting piece friction plate (8.1), an upper clutch rotating piece (8.2) and an upper clutch unit supporting piece (8.3), the upper clutch unit supporting piece friction plate (8.1) and the upper clutch unit supporting piece (8.3) are connected with the upper clutch rotating piece (8.2), the upper clutch rotating piece (8.2) is a structural piece with a shaft fixed perpendicular to a plate, one or more bearings are arranged in the lower clutch unit supporting piece (7.1), an inner ring of each bearing can be fixed with the shaft of the upper clutch rotating piece (8.2), an outer ring of each bearing can be fixed on the upper clutch unit supporting piece (8.3) or the power supporting plate (9), the loading force and the loading speed of the high-speed tensile testing device can be adjusted by adjusting or changing the mass of the upper clutch rotating piece (8.2), the loading force and the loading speed of the high-speed tensile testing device can be adjusted by adjusting or changing the mass of parts fixed on the power supporting plate (9), the loading force and the loading speed of the high-speed tensile testing device can be adjusted by increasing or reducing the loading force of the heavy object fixed on the power supporting plate (9).

7. A high speed tensile testing apparatus according to claim 1, wherein: the high-speed stretching clamp (11) is composed of a clamp body connecting shaft (11.1), a clamp body (11.2), a cylindrical pin shaft (11.3), a screw rod column nut (11.4), a screw rod column (11.5), a flat pressing block (11.6), a circular through hole (11.7), a T-shaped groove (11.8), a shaped groove push-pull block (11.9), a flat pressing block push-pull rod (11.10) and a flat pressing block pull rod fastening head (11.11), the clamp body connecting shaft (11.1), the cylindrical pin shaft (11.3) and the screw rod column (11.5) are connected with the clamp body (11.2), the clamp body (11.2) is provided with an L-shaped horizontal plane and a longitudinal plane, the flat pressing block push-pull rod (11.10) is connected with a threaded hole in the clamp body (11.2), the screw rod column nut (11.4) is connected with the screw rod column (11.5), the flat pressing block (11.6) is provided with the circular through hole (11.7) and the T-push-pull block (11.9), the flat pressing block push-pull rod (11.10) is connected with the flat pressing block push-pull rod (11.10), the flat pressing block push-pull rod (11.10) or the flat pressing block is a flat pressing block (11.10) which is connected with the flat pressing block push-pull rod fastening head which can be fixed on the flat pressing block (11.10).

8. A high speed tensile testing apparatus according to claim 1, wherein: the driving unit (18) is mainly composed of a motor and a coupler, the motor can be a servo motor, a stepping motor, an asynchronous motor or a synchronous motor, the coupler connects a motor shaft with a shaft of the upper clutch rotating piece (8.2), the motor of the driving unit (18) is connected with the power supporting plate (9), kinetic energy generated by the motor is transmitted by generating pressure and friction between the upper clutch unit (8) and the lower clutch unit (7), the distance between the upper cross beam (19) and the lower cross beam (22) can be increased or decreased by selecting different motor steering directions, and the loading force and the loading speed of the high-speed tensile testing device can be adjusted by adjusting the rotating speed of the motor of the driving unit (18).

9. A high speed tensile testing apparatus according to claim 1, wherein: the crossbeam stroke limiting unit (13) consists of a crossbeam stroke limiting unit movable connecting piece (13.1), a crossbeam stroke limiting unit guide rod (13.2) and a crossbeam stroke limiting unit adjustable positioning block (13.3), wherein the crossbeam stroke limiting unit movable connecting piece (13.1) is connected with a linear bearing or is provided with a round hole, the crossbeam stroke limiting unit movable connecting piece (13.1) is connected with an upper crossbeam (19) or a lower crossbeam (22), the crossbeam stroke limiting unit guide rod (13.2) is connected with a power supporting plate (9), the crossbeam stroke limiting unit adjustable positioning block (13.3) can move and be fixed on the crossbeam stroke limiting unit guide rod (13.2), the crossbeam stroke limiting unit adjustable positioning block (13.3) can be a fixed ring, a circular ring, a guide shaft or a block strengthening structure provided with a round through hole, and the crossbeam stroke limiting units (13) are one set or a plurality of sets of uniform distribution.

10. A high speed tensile testing apparatus according to claim 1, wherein: the crossbeam stroke terminal limiting block (14) is connected with the crossbeam stroke limiting unit guide rod (13.2), and can block the crossbeam stroke limiting unit adjustable positioning block (13.3), the crossbeam stroke limiting unit movable connecting piece (13.1) or a linear bearing on the crossbeam stroke limiting unit movable connecting piece (13.1) when the crossbeam stroke limiting unit adjustable positioning block (13.3) fails or is operated by mistake, so as to carry out secondary limiting protection high-speed tensile test device.

11. A high speed tensile testing apparatus according to claim 1, wherein: the test ball screw (17) is provided with threads with opposite rotation directions, two nuts with opposite rotation directions are arranged on the test ball screw (17), the two nuts which limit rotation can move in opposite directions when the screw rotates, and the number of the test ball screws (17) is 1 or more.

12. A high speed tensile testing apparatus according to claim 1, wherein: the double-moving-beam structure is adopted, and the rotation of the ball screw can enable the upper beam (19) and the lower beam (22) to move in opposite directions simultaneously.

13. A high speed tensile testing apparatus according to claim 1, wherein: the driving wheel (24) is connected with a shaft of the lower clutch rotating part (7.2), the driven wheel (25) is connected with the test ball screw (17), the driving wheel (24) and the driven wheel (25) are straight gears, the number of teeth of the driven wheel (25) is equal, the driving wheel (24) and the driven wheel (25) are in a meshing state, and the driving wheel (24) can drive the driven wheel (25) to rotate after rotating.

14. A high speed tensile testing apparatus according to claim 1, wherein: the driving wheel (24) is connected with a shaft of the lower clutch rotating part (7.2), the driven wheel (25) is connected with the test ball screw (17), when the driving wheel (24) and the driven wheel (25) are synchronous belt wheels, the driving wheel (24) and the driven wheel (25) are connected by a synchronous belt, and the number of teeth of the driven wheel (25) is equal.

15. A high speed tensile test apparatus according to claim 1, wherein: the crossbeam stroke adjusting unit (23) mainly comprises a crossbeam stroke adjusting unit rotating part (23.1), a crossbeam stroke adjusting shaft (23.2) and a crossbeam stroke adjusting rotating wheel (23.3), the crossbeam stroke adjusting shaft (23.2) is connected with the bottom plate (1) or the test supporting platform (5) through a bearing seat or a bearing, the crossbeam stroke adjusting shaft (23.2) is simultaneously connected with the bottom plate (1) and the test supporting platform (5) through the bearing seat or the bearing, the crossbeam stroke adjusting rotating wheel (23.3) is connected with the crossbeam stroke adjusting shaft (23.2), the crossbeam stroke adjusting unit rotating part (23.1) can be a hand wheel, a motor or a combination of the motor and a speed reducer, if the rotating part (23.1) of the beam stroke adjusting unit is a motor or a combination of the motor and a speed reducer, the motor or the combination of the motor and the speed reducer is connected with the bottom plate (1) or the test supporting platform (5), if the driving wheel (24) and the driven wheel (25) are straight gears, the beam stroke adjusting rotating wheel (23.3) is also a straight gear and is meshed with the driving wheel (24), a straight gear can be additionally connected to a rotatable shaft of the lower clutch rotating part (7.2), the straight gear of the beam stroke adjusting rotating wheel (23.3) is meshed with the additional and fixed straight gear on the lower clutch rotating part (7.2), and when the driving wheel (24) and the driven wheel (25) are synchronous gears, the crossbeam stroke adjustment runner (23.3) also is the synchronizing wheel, need increase and fix a synchronizing wheel again on the rotatable shaft of lower separation and reunion rotation piece (7.2), the synchronizing wheel of crossbeam stroke adjustment runner (23.3) passes through the hold-in range with the synchronizing wheel that increases and fix on lower separation and reunion rotation piece (7.2) and connects, when upper clutch unit (8) and lower clutch unit (7) are in the separation mode, crossbeam stroke adjustment unit (23) can drive upper beam (19) and lower beam (22) removal in order to realize tensile, compression, impact and bending test as the power part of high-speed tensile test device finally.

16. A high speed tensile test apparatus according to claim 1, wherein: the round hole that opens on the fixed linear bearing or the corresponding board on action wheel backup pad (3) and the power backup pad (9) can be passed in action wheel backup pad guide bar (28), action wheel backup pad guide bar (28) can link to each other with bottom plate (1) and experimental supporting platform (5), action wheel backup pad (3) are located between bottom plate (1) and experimental supporting platform (5), action wheel backup pad setting element (26) one end links to each other with action wheel backup pad (3), action wheel backup pad setting element (26) other end links to each other with experimental supporting platform (5) or bottom plate (1), can guarantee the fixed of action wheel backup pad (3) and experimental supporting platform (5) and bottom plate (1) relative position.

17. A high speed tensile testing apparatus according to claim 1, wherein: when the driving wheel (24) and the driven wheel (25) are gears and the distance between the lower clutch unit (7) and the upper clutch unit (8) is smaller than the tooth widths of the driving wheel (24) and the driven wheel (25), the driving wheel supporting plate lifting unit (27) is adjusted until the lower clutch unit (7) is attached to the upper clutch unit (8), the driving wheel (24) slides for a certain distance along the tooth surface of the driven wheel (25), the driving wheel (24) and the driven wheel (25) are still in a state that partial tooth surfaces are meshed with each other after sliding, and the attachment of the lower clutch unit (7) and the upper clutch unit (8) can be achieved, and friction force is generated.