CN114397177A - Elastic force driving test bed and use method thereof - Google Patents
Elastic force driving test bed and use method thereof Download PDFInfo
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- CN114397177A CN114397177A CN202210051353.9A CN202210051353A CN114397177A CN 114397177 A CN114397177 A CN 114397177A CN 202210051353 A CN202210051353 A CN 202210051353A CN 114397177 A CN114397177 A CN 114397177A
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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
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
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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
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/14—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by dead weight, e.g. pendulum; generated by springs tension
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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
- G01N3/26—Investigating twisting or coiling properties
Abstract
The invention discloses an elastic force driving test bed and a using method thereof, wherein the test bed comprises a loading device, an elastic force driving device, a vertical adjusting device, a horizontal adjusting device, a test piece mounting device and a frame, wherein the loading device, the vertical adjusting device and the horizontal adjusting device are all mounted on the frame; the loading device comprises a loader and a locking device, the elastic force driving device comprises a spring, the loader is used for applying load to the spring, the locking device is used for locking the load of the spring, the vertical adjusting device comprises a sliding adjusting locking block and a reversing wheel, the sliding adjusting locking block can drive the reversing wheel to slide up and down and lock the position, the horizontal adjusting device is provided with a slide rail, the test piece mounting device comprises a test piece and a restoring loading device, and the test piece is placed on the slide rail; the loader is sequentially connected with the elastic driving device, the reversing wheel and the test piece through the connecting rope, the restoring loading device is connected with the test piece through the connecting rope, and the restoring loading device can lock or release the test piece.
Description
Technical Field
The invention relates to a loading test device, in particular to an elastic force driving test bed and a using method thereof.
Background
Before various engineering equipment and products are put into application, many rotary loading and linear loading test tests are required.
Existing rotary loading devices and apparatuses, such as motor-driven rotary loading devices, generally implement rotary loading by controlling a driving motor; if the angular velocity changes greatly in a short time and the accompanying torque changes are large, a very precise control system is needed, and a large amount of energy is consumed in the using process; such devices are generally expensive to manufacture, use and maintain, which undoubtedly drives up the cost of the product, especially for the types of device components that are not in large quantities but must be produced and tested.
The existing linear loading device and equipment, such as a hydraulic actuating device, have high manufacturing cost, and dozens of millions of movements are often caused; a large amount of energy is consumed in the using process, and the maintenance cost is high; in addition, the peak velocity of such devices is typically small, many not exceeding 1 m/s; for impact devices loaded at an instantaneous high speed such as Hopkinson bars and the like, high-speed long-time loading is difficult to realize, a high-speed loading process in a period of time cannot be simulated, and the problems of high equipment construction cost, high use cost and high maintenance cost exist.
Disclosure of Invention
The invention aims to: aiming at the problems in the prior art, the elastic force driving test bed and the use method thereof are provided, the test bed has two functions of rotary loading and linear loading, can simulate a high-speed loading process lasting for a period of time, and is very low in construction cost, maintenance cost and use cost.
In order to achieve the purpose, the invention adopts the technical scheme that:
an elastic force driving test bed comprises a loading device, an elastic force driving device, a vertical adjusting device, a horizontal adjusting device, a test piece mounting device and a frame, wherein the loading device, the vertical adjusting device and the horizontal adjusting device are mounted on the frame;
the loading device comprises a loader and a locking device, the elastic force driving device comprises a spring, the loader is used for applying load to the spring, the locking device is used for locking the load of the spring, the vertical adjusting device comprises a sliding adjusting locking block and a reversing wheel, the sliding adjusting locking block can drive the reversing wheel to slide up and down and lock the position, the horizontal adjusting device is provided with a slide rail, the test piece mounting device comprises a test piece and a restoring and loading device, and the test piece is placed on the slide rail;
the loader is sequentially connected with the elastic driving device, the reversing wheel and the test piece through a connecting rope, the restoring and loading device is connected with the test piece through the connecting rope, and the restoring and loading device can lock or release the test piece.
The test bench provided by the invention adopts the elastic force of the spring as the driving force, and can realize the loading of various torque-time change curves by adjusting the horizontal installation position of the spring, the test piece and the position of the vertical adjusting device, and is particularly suitable for the test working conditions with large angular speed change in a short time and large torque change. Meanwhile, high-speed loading within a period of very high acceleration can be realized, the peak speed constraint is small, and the speed can reach 10-20 m/s theoretically on the premise of not adding any motion amplification device (such as a pulley block).
The test bench can realize two modes of rotary loading and linear loading, has a simple structure, and is very low in construction cost, maintenance cost and use cost compared with the traditional linear loading devices such as a motor rotary loading device, a hydraulic actuating displacement loading device, a Hopkinson bar and the like.
As a preferable scheme of the present invention, the test bed further includes a motion amplification device, such as a pulley block, the pulley block includes a movable pulley, the pulley block is disposed between the diverting pulley and the test piece, and the connecting rope sequentially connects the diverting pulley, the pulley block, and the test piece.
Through addding the assembly pulley, can play the amplification to further increase the speed of applying on the test piece, make the high-speed loading of higher peak speed can be realized to the test piece.
As a preferable scheme of the invention, the connecting point of the test piece connected with the reversing wheel and the connecting point connected with the restoring and loading device are positioned at the same end, and the other end of the test piece is rotationally connected with the horizontal adjusting device, so that the rotary loading can be realized.
As a preferable aspect of the present invention, the test piece mounting device further includes a rotation limiting device for limiting the limit movement position of the test piece.
As a preferable scheme of the present invention, the connection point of the test piece connected to the reversing wheel and the connection point connected to the restoring and loading device are located at two opposite ends, the test piece can slide or roll along the slide rail, and the friction coefficient between the test piece and the slide rail is less than or equal to 0.01, so that linear loading can be achieved.
As a preferred scheme of the invention, a test piece mounting trolley is arranged below the test piece, wheels of the test piece mounting trolley can roll along the slide rail, and the test piece and the slide rail roll through a roller, so that the friction coefficient is smaller, and the test precision is favorably improved.
As a preferable scheme of the present invention, the loader is a winch, and a fixed pulley is further provided between the loader and the elastic force driving device, and the fixed pulley is fixedly mounted on the frame. Through all setting up the pulley at elasticity drive arrangement's both ends, can guarantee to obtain comparatively accurate spring elongation, improve experimental precision.
As a preferable aspect of the present invention, the locking device is a clip capable of clamping the connection cord to the frame.
In a preferred embodiment of the present invention, the elastic force driving device is a single spring or a spring set.
In a preferred embodiment of the present invention, the reloading device is a winch.
The invention also discloses a using method of the elastic force driving test bed, the elastic force driving test bed is used for rotary loading, and the using method comprises the following steps:
the method comprises the following steps: adjusting the mounting position of the vertical adjusting device on the frame to enable the reversing wheel and the test piece to be located at different heights; arranging a connecting point of the test piece connected with the reversing wheel and a connecting point connected with the restoring loading device at the same end, and rotationally connecting the other end of the test piece with the horizontal adjusting device;
step two: locking the test piece through the restoring and loading device;
step three: applying load to the spring through a loader to enable the spring to store elastic potential energy required by a test;
step four: the connecting rope between the loader and the spring is locked through a locking device, so that the elastic potential energy of the spring is kept stable;
step five: releasing the test piece through the restoring loading device, and starting a loading test;
step six: after the loading test is finished, the recovery loading device is adopted to pull the test piece back to the original position and lock the test piece;
step seven: and repeating the third step to the sixth step until all the tests are completed.
The rotary loading method can realize the loading of various torque-time change curves, and is particularly suitable for the test working conditions of large angular speed change in a short time and large torque change.
The invention also discloses a using method of the elastic force driving test bed, the elastic force driving test bed is used for carrying out linear loading, and the using method comprises the following steps:
the method comprises the following steps: adjusting the mounting position of the vertical adjusting device on the frame to enable the reversing wheel and the test piece to be located at the same height; arranging a connecting point of the test piece connected with the reversing wheel and a connecting point connected with the restoring loading device at two opposite ends;
step two: locking the test piece through the restoring and loading device;
step three: applying load to the spring through a loader to enable the spring to store elastic potential energy required by a test;
step four: the connecting rope between the loader and the spring is locked through a locking device, so that the elastic potential energy of the spring is kept stable;
step five: releasing the test piece through the restoring loading device, and starting a loading test;
step six: after the loading test is finished, the recovery loading device is adopted to pull the test piece back to the original position and lock the test piece;
step seven: and repeating the third step to the sixth step until all the tests are completed.
The linear loading method can realize high-speed loading within a period of very high acceleration, has small peak speed constraint, and can theoretically reach 10-20 m/s on the premise of not adding any motion amplification device.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:
1. the invention adopts the elastic force of the spring as the driving force, can realize the loading of various torque-time change curves by adjusting the spring, the horizontal installation position of the test piece and the position of the vertical adjusting device, and is particularly suitable for the test working conditions with large change of angular velocity and large change of torque in a short time. Meanwhile, high-speed loading within a period of very large acceleration can be realized, the peak speed constraint is small, and the maximum acceleration can reach 10-20 m/s theoretically on the premise of not adding any motion amplification device.
2. The invention can realize two modes of rotary loading and linear loading through one test bench, only needs to replace part of connecting pieces and change the connecting position when in mode conversion, and has convenient use and low cost.
3. The test bench provided by the invention has a simple structure, and compared with the traditional motor rotation loading device, hydraulic actuation displacement loading device, Hopkinson bar and other linear loading devices, the test bench has very low construction cost, maintenance cost and use cost.
4. The pulley block is additionally arranged, so that an amplification effect can be achieved, the speed applied to the test piece is further increased, and the test piece can be loaded at a high speed with a higher peak speed.
5. According to the invention, the pulleys are arranged at the two ends of the elastic force driving device, so that relatively accurate spring elongation can be ensured, and the test precision is improved.
6. The power system can be replaced and adjusted according to actual requirements, and compared with the conventional test system, the power system has the advantages of wider applicable limit range and lower manufacturing and updating cost. Various sensing acquisition equipment can be additionally arranged according to requirements, so that various data acquisition and connection and placement of the sensing equipment are facilitated.
Drawings
FIG. 1 is a schematic view of the spring-driven test stand of the present invention in a rotational loading configuration.
FIG. 2 is a schematic view of the spring-driven test bed of the present invention in a linear loading configuration.
Icon: 1-loading device, 11-loading device, 12-fixed pulley, 13-locking device, 2-elastic driving device, 3-vertical adjusting device, 31-sliding adjusting locking block, 32-reversing wheel, 4-horizontal adjusting device, 41-sliding rail, 42-sliding rail connecting piece, 43-base connecting piece, 44-blocking piece, 5-pulley block, 6-test piece mounting device, 61-test piece, 611-loading connecting point, 612-restoring connecting point, 62-rotation limiting device, 63-test piece mounting base, 64-restoring loading device, 65-test piece mounting trolley, 7-frame and 8-connecting rope.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings.
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example 1
As shown in fig. 1, the elastic force driving test bed comprises a loading device 1, an elastic force driving device 2, a vertical adjusting device 3, a horizontal adjusting device 4, a pulley block 5, a test piece mounting device 6, a frame 7 and a connecting rope 8, wherein the loading device 1, the vertical adjusting device 3 and the horizontal adjusting device 4 are all mounted on the frame 7. Specifically, the method comprises the following steps:
the loading device 1 comprises a loader 11 and a locking device 13, wherein the loader 11 is connected with the elastic driving device 2 through a connecting rope 8. The loader 11 is used to apply a load to the elastic force drive device 2, and the locking device 13 is used to lock the load applied to the elastic force drive device 2.
As a preferred embodiment, the loader 11 can be a winch with a simple structure and a low price, or other driving loading devices, the locking device 13 can be a detachable connection structure such as a buckle or a hoop, and the connection rope 8 can be a rope-shaped structure such as a steel wire rope. In this way, the locking device 13 can directly clamp (lock) the connecting rope 8 on the frame 7, thereby fixing the position of the connecting rope 8 and locking the load applied to the elastic driving device 2.
Further preferably, in order to ensure that the load applied to the elastic force driving device 2 can be accurately calculated, it is necessary to accurately calculate the amount of deformation of the elastic force driving device 2. The winch is directly connected with the elastic driving device 2, and the deformation of the elastic driving device 2 is difficult to accurately account due to the limitation of the structure and the principle of the winch, so that the fixed pulley 12 can be additionally arranged, and the winch is connected with the elastic driving device 2 through the fixed pulley 12, so that the deformation of the elastic driving device 2 can be accurately accounted, and the test precision is improved. The fixed pulleys 12 may be attached to the frame 7, and the number of the fixed pulleys 12 is not limited to two in fig. 1, and may be only 1, 3, 4, or the like.
One end of the elastic force driving device 2 is connected with the loading device 1 through a connecting rope 8, and the other end is connected with the vertical adjusting device 3 through the connecting rope 8. The elastic force driving device 2 can be a single spring or a spring box, and a plurality of groups of springs are arranged in the spring box. Under the combined action of the loading device 11 and the locking device 13, the elastic drive device 2 can store elastic potential energy, and the stored elastic potential energy can be applied to the test piece 61. Through changing the spring or the spring box of different physical parameters, can store the elastic potential energy of equidimension not, and then be used for satisfying various experimental requirements.
The vertical adjusting device 3 comprises a sliding adjusting locking block 31 and a reversing wheel 32, the sliding adjusting locking block 31 is fixedly connected with the reversing wheel 32, and the sliding adjusting locking block 31 can slide up and down along the frame 7 to further drive the reversing wheel 32 to slide up and down. The slide adjustment locking block 31 is further provided with a locking member, and when slid to a target position, the slide adjustment locking block 31 can lock the position, for example, the adjustment locking block 31 and the frame 7 are fixed by using a latch, a jack, or a snap. The vertical adjustment device 3 is used to adjust the vertical height of the loading point, and thus the direction of the load applied to the test piece 61. In a preferred embodiment, the reversing wheel 32 is a fixed pulley.
The leveling device 4 includes a slide rail 41, a slide rail connector 42, and a base connector 43. The slide rails 41 are mounted to the frame 7 by slide rail connectors 42, the slide rail connectors 42 being conventional connectors such as bolted, pinned, etc. The slide rail 41 is used to provide a rail for horizontal mounting position adjustment of the test piece 61. The base attachment 43 is used to mount the test piece mounting base 63, and the base attachment 43 is a conventional attachment such as a bolt connection, a pin connection, or the like.
The specimen mounting device 6 includes a specimen 61, a rotation limiting device 62, a specimen mounting base 63, and a restoring and loading device 64. The test piece 61 is mounted on the horizontal adjusting device 4 through the test piece mounting base 63 and the base connecting piece 43, the test piece 61 can rotate relative to the horizontal adjusting device 4, the rotation limiting device 62 is mounted on the test piece mounting base 63, and the rotation limiting device 62 is used for limiting the limit position of the movement of the test piece 61. The restoring and loading device 64 can lock or release the test piece 61, and the restoring and loading device 64 is connected with the restoring connection point 612 of the test piece 61 through the connecting rope 8.
As a preferred embodiment, the reloading device 64 can be a winch or the like with a simple and inexpensive structure. The restoring of the loading device 64 to lock the test piece 61 means: the winch winches the test piece 61 so that the position of the test piece 61 does not move. The restoring of the loading device 6 to release the test piece 61 means: the winch breaks the connection to the test piece 61, for example by cutting the connecting rope 8, or the connection point to the test piece 61, so that the test piece 61 is released instantaneously. For example, the connection point may be a one-way connection joint, and the connection with the test piece 61 may be disconnected by rotating the connection joint.
The pulley block 5 is arranged between the vertical adjusting device 3 and the test piece mounting device 6, specifically, the connecting rope 8 penetrating through the reversing wheel 32 is connected with the pulley block 5 and then connected with the test piece 61, and the loading connection point 611 and the recovery connection point 612 of the pulley block 5 and the test piece 61 are located at the same end of the test piece 61, so that the rotation of the test piece 61 can be realized. The pulley block 5 at least comprises a movable pulley, and can also be in a combination form of the movable pulley and a fixed pulley, and the pulley block 5 can play a role in amplification, so that the speed applied to the test piece 61 is further increased. The pulley block 5 can be set according to actual test requirements, and can also not be set. If the pulley block 5 is not arranged, the connecting rope 8 passing through the reversing wheel 32 is directly connected with the test piece 61.
Example 2
A method of using a spring-actuated test rig for rotational loading using a spring-actuated test rig as in example 1, comprising the steps of:
the method comprises the following steps: determining the load required to be output by the loading device 1 according to the test requirement;
step two: selecting a proper loader 11, an elastic force driving device 2, a pulley block 5 and the like according to the size of the load required to be output;
step three: mounting and fixing the frame 7;
step four: the loading device 1, the vertical adjusting device 3 and the horizontal adjusting device 4 are all arranged on the frame 7, and the test piece 61 is arranged on the horizontal adjusting device 4 after being adjusted in position; adjusting the installation position of the vertical adjusting device 3 on the frame 7, so that the reversing wheel 32 and the test piece 61 are positioned at different heights;
step five: the loading device 1, the elastic force driving device 2, the vertical adjusting device 3, the pulley block 5, the test piece 61 and the restoring loading device 64 are connected through a connecting rope 8;
step six: locking the test piece 61 by the restoring loading device 64;
step seven: the elastic force driving device 2 is elastically deformed through the loader 11, so that elastic potential energy required by the test is stored;
step eight: the connecting rope 8 between the loader 11 and the elastic force driving device 2 is locked by the locking device 13, so that the elastic potential energy of the spring is kept unchanged;
step nine: releasing the test piece 61 through the recovery loading device 64, and starting a loading test;
step ten: after the loading test is finished, the test piece 61 is pulled back to the original position and locked by the recovery loading device 64;
step eleven: and repeating the third step to the sixth step until all the tests are completed.
Step twelve: the locking device 13 is released, the elastic driving device 2 is released, the next test piece 61 is replaced, and the steps are repeated until all tests are completed.
Example 3
Based on the elastic force driven test bed in example 1, in the linear loading mode, part of the components are changed, specifically, as shown in fig. 2:
and (3) removing the rotation limiting device 62, the test piece mounting base 63 and the recovery loading device 64, and adjusting the mounting position of the vertical adjusting device 3 on the frame 7 so that the reversing wheel 32 and the test piece 61 are positioned at the same height. And the loading connection point 611 of the test piece 61 connected with the reversing wheel 32 and the restoring connection point 612 connected with the restoring loading device 64 are positioned at two opposite ends, so that the test piece 61 can slide or roll along the slide rail 41, and the friction coefficient between the test piece 61 and the slide rail 41 is smaller than or equal to 0.01 through the structural design.
As a preferred embodiment, a specimen mounting trolley 62 or other rollable structure is arranged below the specimen 61, the specimen 61 is mounted on the slide rail 41 by the specimen mounting trolley 62, and wheels of the specimen mounting trolley 62 can roll along the slide rail 41. At this time, the test piece 61 and the slide rail 41 roll through the roller, so that the friction coefficient is small, and the test precision is improved.
Example 4
A method of using a spring-actuated test rig for linear loading using a spring-actuated test rig as in example 3, comprising the steps of:
the method comprises the following steps: determining the load required to be output by the loading device 1 according to the test requirement;
step two: selecting a proper loader 11, an elastic force driving device 2, a pulley block 5 and the like according to the size of the load required to be output;
step three: mounting and fixing the frame 7;
step four: the loading device 1, the vertical adjusting device 3 and the horizontal adjusting device 4 are all arranged on the frame 7, and the test piece 61 is arranged on the horizontal adjusting device 4 after being adjusted in position (the step can replace parts needing to be replaced); adjusting the installation position of the vertical adjusting device 3 on the frame 7 so that the reversing wheel 32 and the test piece 61 are positioned at the same height;
step five: the loading device 1, the elastic force driving device 2, the vertical adjusting device 3, the pulley block 5, the test piece 61 and the restoring loading device 64 are connected through a connecting rope 8;
step six: locking the test piece 61 by the restoring loading device 64;
step seven: the elastic force driving device 2 is elastically deformed through the loader 11, so that elastic potential energy required by the test is stored;
step eight: the connecting rope 8 between the loader 11 and the elastic force driving device 2 is locked by the locking device 13, so that the elastic potential energy of the spring is kept unchanged;
step nine: releasing the test piece 61 through the recovery loading device 64, and starting a loading test;
step ten: after the loading test is finished, the test piece 61 is pulled back to the original position and locked by the recovery loading device 64;
step eleven: and repeating the third step to the sixth step until all the tests are completed.
Step twelve: the locking device 13 is released, the elastic driving device 2 is released, the next test piece 61 is replaced, and the steps are repeated until all tests are completed.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. An elastic force driving test bed is characterized by comprising a loading device (1), an elastic force driving device (2), a vertical adjusting device (3), a horizontal adjusting device (4), a test piece mounting device (6) and a frame (7), wherein the loading device (1), the vertical adjusting device (3) and the horizontal adjusting device (4) are mounted on the frame (7);
the loading device (1) comprises a loader (11) and a locking device (13), the elastic force driving device (2) comprises a spring, the loader (11) is used for applying load to the spring, the locking device (13) is used for locking the load of the spring, the vertical adjusting device (3) comprises a sliding adjusting locking block (31) and a reversing wheel (32), the sliding adjusting locking block (31) can drive the reversing wheel (32) to slide up and down and lock the position, the horizontal adjusting device (4) is provided with a sliding rail (41), the test piece mounting device (6) comprises a test piece (61) and a restoring loading device (64), and the test piece (61) is placed on the sliding rail (41);
the loader (11) is sequentially connected with the elastic force driving device (2), the reversing wheel (32) and the test piece (61) through a connecting rope (8), the restoring and loading device (64) is connected with the test piece (61) through the connecting rope (8), and the restoring and loading device (64) can lock or release the test piece (61).
2. The elastic force driven test bed according to claim 1, further comprising a pulley block (5), wherein the pulley block (5) comprises a movable pulley, the pulley block (5) is arranged between the reversing wheel (32) and the test piece (61), and the connecting rope (8) sequentially connects the reversing wheel (32), the pulley block (5) and the test piece (61).
3. An elastically actuated test stand according to claim 1, wherein the point of attachment of the test piece (61) to the reverser wheel (32) is located at the same end as the point of attachment of the return loading device (64), and the other end of the test piece (61) is pivotally connected to the leveling device (4).
4. A spring driven test stand according to claim 3, wherein the specimen mounting device (6) further comprises a rotation limiting device (62), the rotation limiting device (62) being adapted to limit the extreme movement position of the specimen (61).
5. An elastically actuated test stand according to claim 1, wherein the connecting point of the test piece (61) to the reverser wheel (32) and the connecting point to the return loading device (64) are located at opposite ends, the test piece (61) is slidable or rollable along the slide rail (41), and the coefficient of friction between the test piece (61) and the slide rail (41) is less than or equal to 0.01.
6. A spring driven test bed according to claim 5, characterized in that a test piece mounting trolley (62) is arranged below the test piece (61), and wheels of the test piece mounting trolley (62) can roll along the slide rails (41).
7. An elastic force driven test bench according to any one of claims 1-6, characterized in that the loader (11) is a winch, and a fixed pulley (12) is arranged between the loader (11) and the elastic force driving device (2), and the fixed pulley (12) is fixedly arranged on the frame (7).
8. A spring-actuated test stand according to claim 7, wherein the locking means (13) is a snap fit which secures the connecting string (8) to the frame (7).
9. A method of using a spring-actuated test rig, wherein rotational loading is performed using a spring-actuated test rig according to any of claims 1-8, comprising the steps of:
the method comprises the following steps: adjusting the installation position of the vertical adjusting device (3) on the frame (7) so that the reversing wheel (32) and the test piece (61) are located at different heights; arranging a connecting point of the test piece (61) connected with the reversing wheel (32) and a connecting point of the restoring and loading device (64) at the same end, and rotationally connecting the other end of the test piece (61) with the horizontal adjusting device (4);
step two: locking the test piece (61) by the restoring loading device (64);
step three: applying a load to the spring through a loader (11), so that the spring stores elastic potential energy required by a test;
step four: locking the connecting rope (8) between the loader (11) and the spring by a locking device (13) so that the elastic potential energy of the spring is kept stable;
step five: releasing the test piece (61) through the recovery loading device (64) and starting a loading test;
step six: after the loading test is finished, the test piece (61) is pulled back to the original position and locked by the recovery loading device (64);
step seven: and repeating the third step to the sixth step until all the tests are completed.
10. A method of using a spring-actuated test rig in which linear loading is performed using a spring-actuated test rig according to any of claims 1 to 8, comprising the steps of:
the method comprises the following steps: adjusting the installation position of the vertical adjusting device (3) on the frame (7) so that the reversing wheel (32) and the test piece (61) are located at the same height; arranging a connecting point of the test piece (61) connected with the reversing wheel (32) and a connecting point connected with the restoring and loading device (64) at two opposite ends;
step two: locking the test piece (61) by the restoring loading device (64);
step three: applying a load to the spring through a loader (11), so that the spring stores elastic potential energy required by a test;
step four: locking the connecting rope (8) between the loader (11) and the spring by a locking device (13) so that the elastic potential energy of the spring is kept stable;
step five: releasing the test piece (61) through the recovery loading device (64) and starting a loading test;
step six: after the loading test is finished, the test piece (61) is pulled back to the original position and locked by the recovery loading device (64);
step seven: and repeating the third step to the sixth step until all the tests are completed.
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