An adjustable three-dimensional mechanical loading test platform

Abstract

The present invention belongs to the technical field of mechanical loading tests, and particularly aims at an adjustable three-dimensional mechanical loading test platform. It includes: a bracket, a sliding frame is slidably connected to the bracket, and clamps are installed on both the sliding frame and the bracket; a first electric push rod, which is fixedly connected to the clamp of the sliding frame, a sliding block is slidably connected to the telescopic part of the first electric push rod, and a first elastic member is fixedly connected between the telescopic part of the first electric push rod and the sliding block; a fixed block, which is fixedly connected to the sliding block; a trigger rod, which is fixedly connected to the sliding block; a limiting rod, which is arranged on the clamp of the sliding frame. The present invention impacts the object to be loaded by reciprocating movement of the fixed block, and simulates the influence of external impact load on the object to be loaded during the process of mechanical loading test on the object to be loaded, so that the mechanical loading test is more in line with the actual use environment, and further makes the test data obtained from the mechanical loading test more representative.

Description

Technical Field

[0001] The present invention belongs to the technical field of mechanical loading tests, and particularly aims at an adjustable three-dimensional mechanical loading test platform. Background Art

[0002] Three-dimensional mechanical loading refers to the process of applying mechanical loads to materials or structures in three-dimensional space. When the existing adjustable three-dimensional mechanical loading test platform conducts mechanical loading tests on new materials, it generally fixes the object to be loaded and then directly applies loads to the object to be loaded. Among them, the applied loads are generally the loads that the object to be loaded often receives during use. For example, tensile and compressive members generally conduct tensile loading and compressive loading tests on the mechanical loading platform to observe the stress distribution of the object to be loaded, so as to know the material and structural bearing capacity of the object to be loaded during actual use. However, the test platform is generally located in a laboratory with a relatively single environment. However, during actual use, the object to be loaded often remains in a specific environment for a long time, such as mechanical equipment parts that are continuously vibrating, rods used for drilling and tunneling, and mechanisms that are vulnerable to accidental impact loads. This will cause the object to be loaded to be accidentally impacted during actual use. However, the existing test platform conducts mechanical loading tests on the object to be loaded in a single use environment, which is obviously insufficient to analyze the stress distribution state of the object to be loaded in different environments. This will result in a large difference between the test data of the test platform and the actual use data in different environments, thus resulting in insufficient representativeness of the test data. Summary of the Invention

[0003] In order to overcome the disadvantages pointed out in the above background art, the present invention provides an adjustable three-dimensional mechanical loading test platform.

[0004] The technical solution is as follows: An adjustable three-dimensional mechanical loading test platform includes:

[0005] A bracket, a sliding frame is slidably connected to the bracket, and clamps are installed on both the sliding frame and the bracket;

[0006] A first electric push rod is fixedly connected to the clamp of the sliding frame. A sliding block is slidably connected to the telescopic part of the first electric push rod, and a first elastic member is fixedly connected between the telescopic part of the first electric push rod and the sliding block;

[0007] A fixed block is fixedly connected to the sliding block;

[0008] A trigger rod is fixedly connected to the sliding block;

[0009] A limiting rod is arranged on the clamp of the sliding frame. The limiting rod is used to limit the trigger rod so that the trigger rod is pressed and moves reciprocally.

[0010] Furthermore, it further includes:

[0011] An electromagnetic slider, an electromagnetic slide rail is provided on the fixture of the sliding frame, the electromagnetic slider is slidably connected within the electromagnetic slide rail of the fixture on the sliding frame, the electromagnetic slider is slidably connected to the limiting rod, and the electromagnetic slider is used to drive the limiting rod to slide so as to adjust the distance between the trigger rod and the limiting rod.

[0012] Furthermore, it further includes:

[0013] A second electric push rod, fixedly connected to the electromagnetic slider, the telescopic part of the second electric push rod is fixedly connected to the limiting rod, the limiting rod is provided with a plurality of extrusion parts distributed at intervals, there are gaps between two adjacent extrusion parts on the limiting rod, and the widths of all the gaps are different.

[0014] Furthermore, the end faces of the extrusion parts on the limiting rod perpendicular to the moving direction of the telescopic end of the first electric push rod are all flat surfaces, the trigger rod is fixedly connected with symmetrically distributed deformation blocks, the deformation blocks are made of flexible materials, the end faces on the back side of the symmetrically distributed deformation blocks on the trigger rod are all parallel to the flat surfaces of the extrusion parts on the limiting rod, and the extrusion parts on the limiting rod are used to extrude the symmetrically distributed deformation blocks on the trigger rod so that the deformation blocks of the trigger rod deform.

[0015] Furthermore, two sliding rods symmetrically distributed centrosymmetrically are slidably connected to the fixed block, a friction plate is provided on the side of the sliding rod away from the fixed block, and the opposite sides of the two friction plates are rough surfaces.

[0016] Furthermore, a second elastic member is fixedly connected between the sliding rod and the fixed block.

[0017] Furthermore, it further includes:

[0018] Extrusion blocks, there are two extrusion blocks symmetrically distributed centrosymmetrically, and they are respectively rotatably connected to the adjacent friction plates, and the two extrusion blocks are vertically offset.

[0019] Furthermore, it further includes:

[0020] Flexible blocks, there are two flexible blocks symmetrically distributed centrosymmetrically, and they are respectively fixedly connected to the sides of the adjacent extrusion blocks close to the fixed block.

[0021] Furthermore, it further includes:

[0022] First wedge-shaped blocks, there are two first wedge-shaped blocks symmetrically distributed centrosymmetrically, and they are respectively fixedly connected to the adjacent friction plates, and the first wedge-shaped blocks are provided with first inclined surfaces;

[0023] There are two second wedge blocks that are centrally symmetrically distributed and are respectively fixed to adjacent clamps. Each of the two second wedge blocks is provided with a second inclined surface, and the second inclined surface of the second wedge block is used to guide the adjacent first wedge block. The sliding rod is slidably connected to the adjacent friction plate, and a third elastic member is fixed between the sliding rod and the adjacent friction plate.

[0024] Furthermore, it further includes:

[0025] An impact ball is rotatably connected to the fixed block. The impact ball is provided with impact portions that are circumferentially distributed, and the hardness of the material of each impact portion is different. The impact ball is fixed with a rotating rod that is rotatably connected to the fixed block.

[0026] Compared with the prior art, the present invention has the following advantages: 1. The present invention impacts the object to be loaded by reciprocating movement of the fixed block. During the mechanical loading test of the object to be loaded, it simulates the influence of external impact loads on the object to be loaded, so that the mechanical loading test is more in line with the actual use environment, and thus the test data obtained from the mechanical loading test is more representative;

[0027] 2. By changing the moving distance of the trigger rod, the impact force of the fixed block on the object to be loaded changes, so as to simulate the change of the stress distribution of the object to be loaded when it is subjected to different external loads in different actual use environments, and thus increase the diversity of the test data of the device;

[0028] 3. By adjusting the position of the extrusion portion on the limiting rod, the reciprocating movement position of the trigger rod is changed, so that the reciprocating movement position and frequency of the sliding block and the fixed block change, simulating the change of the stress distribution of the object to be loaded when different positions of the object to be loaded are impacted by external loads of different frequencies, and thus increasing the diversity of the test data of the device;

[0029] 4. The object to be loaded is ground by the reciprocating movement of the friction plate, so that scratches appear on the surface of the object to be loaded, simulating the situation where the object to be loaded is in a sand and water flow environment during actual use and is scratched by the influence of sand and water flow, so that the data of the object to be loaded is more in line with the actual use situation, in order to increase the types of test data and improve the accuracy of the test data;

[0030] 5. By driving the flexible block to move through the extrusion block, the flexible block squeezes the object to be loaded, applying a bending moment force to the object to be loaded, simulating the situation where the object to be loaded has a bending tendency when it is laterally stressed during actual use, so that the mechanical loading test is more in line with unexpected situations in actual use;

[0031] 6. By moving the first wedge block along the second inclined plane of the second wedge block, the movement trajectory of the friction plate is changed, thereby increasing the direction and form of the friction plate scraping the loaded object, so as to increase the diversity of the test results of this device;

[0032] 7. Impact the loaded object with impact parts of different material hardnesses to simulate the stress distribution state of the loaded object after being impacted by objects of various hardnesses during the actual use process, so that the test data of this device is more accurate and the test data is more representative. Description of the Drawings

[0033] Figure 1 It is a three-dimensional structure schematic diagram of the present invention;

[0034] Figure 2 It is a three-dimensional structure schematic diagram of the fixture of the present invention;

[0035] Figure 3 It is a three-dimensional structure schematic diagram of the sliding block of the present invention;

[0036] Figure 4 It is a three-dimensional structure schematic diagram of the fixed block of the present invention;

[0037] Figure 5 It is a three-dimensional structure schematic diagram of the limit rod of the present invention;

[0038] Figure 6 It is a three-dimensional structure schematic diagram of the electromagnetic slider of the present invention;

[0039] Figure 7 It is a three-dimensional structure schematic diagram of the extrusion block of the present invention;

[0040] Figure 8 It is a three-dimensional structure schematic diagram of the flexible block of the present invention;

[0041] Figure 9 It is a three-dimensional structure schematic diagram of the impact part of the present invention.

[0042] Description of the reference numerals: 1. Support, 2. Sliding frame, 3. Fixture, 4. First electric push rod, 5. Sliding block, 6. Fixed block, 601. Trigger rod, 602. Limit rod, 603. Electromagnetic slider, 604. Second electric push rod, 7. Sliding rod, 8. Friction plate, 9. Extrusion block, 10. Flexible block, 11. First wedge block, 12. Second wedge block, 13. Impact ball, 1301. Impact part, 14. Rotating rod. Detailed Embodiments

[0043] The present invention will be specifically described below with reference to the drawings.

[0044] An adjustable three-dimensional mechanical loading test platform, as Figures 1 - 6As shown in the figure, it includes: a bracket 1, a control terminal (not shown in the figure) is provided on the bracket 1, a sliding frame 2 is slidably connected to the bracket 1. The sliding frame 2 is an existing structure and can be an electric slider. A guide rail for the sliding frame 2 to slide is provided on the bracket 1. The sliding frame 2 is electrically connected to the control terminal, so that the sliding frame 2 can move up and down along the guide rail on the bracket 1. Clamps 3 are installed on both the sliding frame 2 and the bracket 1. The clamp 3 is composed of a fixed seat for installation and a clamping pliers for clamping an object. The two clamps 3 are distributed oppositely up and down for fixing the object to be loaded. The sliding frame 2 drives the upper clamp 3 thereon to move vertically through vertical movement, so that the two clamps 3 can move relatively, apply a tensile force or a compressive force to the object to be loaded, and adjust the relative movement speed of the two clamps 3 by adjusting the movement speed of the sliding frame 2 to achieve the adjustment of the tensile and compressive force loading; a first electric push rod 4 is fixedly connected to the clamp 3 of the sliding frame 2. The first electric push rod 4 is electrically connected to the control terminal. A sliding block 5 is slidably connected to the telescopic part of the first electric push rod 4. The telescopic part of the first electric push rod 4 faces downward. The telescopic part of the first electric push rod 4 is used to drive the sliding block 5 to move vertically. A first elastic member is fixedly connected between the telescopic part of the first electric push rod 4 and the sliding block 5. The first elastic member between the telescopic part of the first electric push rod 4 and the sliding block 5 is a compression spring; a fixed block 6 is fixedly connected to the sliding block 5; a trigger rod 601 is fixedly connected to the sliding block 5. Pressing inclined surfaces are arranged up and down at a position of the trigger rod 601 far from the sliding block 5; a limiting rod 602 is arranged on the clamp 3 of the sliding frame 2. Both upper and lower end faces of the extrusion part on the limiting rod 602 are flat surfaces. Two deformation blocks are symmetrically distributed up and down and fixedly connected to the trigger rod 601. The back side end faces of the two deformation blocks on the trigger rod 601 are parallel to the horizontal plane. The deformation block is made of a flexible material. The deformation block of the trigger rod 601 is in Figure 1The front projection on the front view is a triangle. The back end faces of the deformation blocks symmetrically distributed on the trigger rod 601 are all parallel to the plane of the extrusion part of the limit rod 602. The extrusion part on the limit rod 602 is used to extrude the deformation blocks symmetrically distributed on the trigger rod 601, so that the deformation blocks of the trigger rod 601 deform. The moment the trigger rod 601 loses contact with one extrusion part on the limit rod 602, the first elastic member between the telescopic part of the first electric push rod 4 and the sliding block 5 rebounds quickly. The end face of the deformation block of the trigger rod 601 can move directly and quickly to the left along the plane of the extrusion part, so that the sliding block 5 drives the trigger rod 601 and the fixed block 6 to move quickly to the left, ensuring the impact force of the fixed block 6 on the object to be loaded. The length of the compression inclined plane of the trigger rod 601 in the left-right direction is greater than the length of any extrusion part of the limit rod 602 in the left-right direction. The extrusion part of the limit rod 602 is used to extrude the deformation block of the trigger rod 601. When the trigger rod 601 moves up and down, it extrudes the limit rod 602 through the deformation block on one side. After the deformation block of the trigger rod 601 is compressed and deformed to the limit state, the end face of the deformation block of the trigger rod 601 becomes an inclined plane, so that the trigger rod 601 is compressed and moves reciprocally in the left-right direction while moving up and down.

[0045] As Figure 5 and Figure 6 shown, it further includes: an electromagnetic slider 603. The fixture 3 of the sliding frame 2 is provided with an electromagnetic rail electrically connected to the control terminal. The electromagnetic slider 603 is slidably connected in the electromagnetic rail of the fixture 3 on the sliding frame 2, so that the electromagnetic slider 603 can move left and right in the electromagnetic rail. The electromagnetic slider 603 is slidably connected to the limit rod 602, so that the limit rod 602 can move vertically relative to the electromagnetic slider 603. The electromagnetic slider 603 is used to drive the limit rod 602 to slide left and right, so as to adjust the distance between the trigger rod 601 and the limit rod 602, thereby changing the distance that the trigger rod 601 moves along the adjacent extrusion parts on the limit rod 602, and further changing the amplitude of the left-right reciprocating movement of the trigger rod 601.

[0046] As Figure 5 and Figure 6 shown, it further includes: a second electric push rod 604, fixedly connected to the electromagnetic slider 603. The second electric push rod 604 is electrically connected to the control terminal. The telescopic part of the second electric push rod 604 is fixedly connected to the limit rod 602. The telescopic part of the second electric push rod 604 is used to drive the limit rod 602 to move up and down, and further adjust the positions of all the extrusion parts on the limit rod 602. The limit rod 602 is provided with a plurality of extrusion parts distributed at intervals. There are gaps between two adjacent extrusion parts on the limit rod 602, and the widths of all the gaps in the up-down direction are different.

[0047] The specific working principle is as follows:

[0048] When an operator needs to use this device to conduct a mechanical loading test, the operator fixes the upper and lower ends of the object to be loaded through the fixture 3. The object to be loaded is pressed against the fixed block 6, causing the fixed block 6 to squeeze the sliding block 5 to the right. The sliding block 5 moves to the right, and the first elastic member between the telescopic part of the first electric push rod 4 and the sliding block 5 is compressed to store energy. Then, the operator controls the movement of the sliding frame 2 through the control terminal. The sliding frame 2 drives the fixture 3 thereon to move. If a tensile force needs to be applied to the object to be loaded, the sliding frame 2 drives the fixture 3 thereon to move upward. The two fixtures 3 move away from each other and apply a tensile force to the object to be loaded. If a compressive force needs to be applied to the object to be loaded, the sliding frame 2 drives the fixture 3 thereon to move downward. The two fixtures 3 move towards each other and apply a compressive force to the object to be loaded.

[0049] Since the object to be loaded will not only be simply compressed and stretched during actual use, if it is necessary to simulate the influence of an external impact load on the object to be loaded, the operator turns on the first electric push rod 4 through the control terminal. The telescopic end of the first electric push rod 4 drives the fixed block 6 to move up and down through the sliding block 5. During the up and down movement of the sliding block 5, the sliding block 5 drives the trigger rod 601 to move up and down. Taking the downward movement of the sliding block 5 driving the trigger rod 601 as an example, after a deformation block of the trigger rod 601 moves to contact an adjacent extrusion part on the limit rod 602, blocked by the extrusion part on the limit rod 602, a deformation block of the trigger rod 601 deforms to form an inclined plane. Along with the upward movement of the trigger rod 601, the trigger rod 601 moves along the adjacent extrusion part on the limit rod 602, causing the trigger rod 601 to move to the right during the downward movement. The first elastic member between the telescopic part of the first electric push rod 4 and the sliding block 5 is further compressed. When the trigger rod 601 moves out of contact with the adjacent extrusion part on the limit rod 602, the deformation block of the trigger rod 601 rebounds and resets, and the first elastic member between the telescopic part of the first electric push rod 4 and the sliding block 5 rebounds, causing the trigger rod 601 to move to the left. This process repeats. During the up and down movement of the trigger rod 601 along the limit rod 602, the trigger rod 601 moves left and right reciprocally. The trigger rod 601 drives the fixed block 6 to move left and right reciprocally through the sliding block 5.

[0050] During the up and down movement of the fixed block 6, the fixed block 6 moves left and right reciprocally to impact the object to be loaded. During the process of conducting a mechanical loading test on the object to be loaded, it simulates the influence of an external impact load on the object to be loaded, making the mechanical loading test more in line with the actual use environment, and thus making the test data obtained from the mechanical loading test more representative.

[0051] When the operator needs to adjust the impact force of the fixed block 6 on the object to be loaded, the operator turns on the electromagnetic slide rail through the control terminal, so that the electromagnetic slider 603 moves left and right. Taking the increase of the impact force of the fixed block 6 on the object to be loaded as an example, the operator controls the electromagnetic slider 603 to move to the right. The electromagnetic slider 603 drives the limit rod 602 to move to the right, and the range of extrusion of the extrusion part on the limit rod 602 on the trigger rod 601 increases. After the trigger rod 601 contacts the extrusion part on the limit rod 602, the moving distance of the trigger rod 601 to the right increases. The trigger rod 601 drives the sliding block 5 to move a greater distance to the right, and the compression amplitude of the first elastic member between the telescopic part of the first electric push rod 4 and the sliding block 5 increases. When the trigger rod 601 loses contact with the extrusion part on the limit rod 602, the rebound amount of the first elastic member between the telescopic part of the first electric push rod 4 and the sliding block 5 increases, so as to increase the impact force of the fixed block 6 on the object to be loaded, simulate the stress distribution changes of the object to be loaded under different external loads in different actual use environments, and then increase the diversity of the test data of this device. And the operator can drive the limit rod 602 to move to the left by the electromagnetic slider 603 until it no longer contacts the trigger rod 601 temporarily, so as to control the trigger rod 601 not to move left and right reciprocally, so that the trigger rod 601 no longer drives the fixed block 6 to move left and right to impact the object to be loaded through the sliding block 5.

[0052] When the operator needs to adjust the impact frequency and position of the fixed block 6 on the object to be loaded, the operator turns on the second electric push rod 604 through the control terminal. The second electric push rod 604 drives the limit rod 602 to move up and down. Since the widths of all the gaps formed by the extrusion part on the limit rod 602 are different, when the limit rod 602 moves up and down, the position of its extrusion part changes, changing the left and right reciprocating movement position of the trigger rod 601, so that the left and right reciprocating movement positions of the sliding block 5 and the fixed block 6 change, and the frequency of the left and right reciprocating movement of the fixed block 6 also changes, simulating the stress distribution changes of the object to be loaded at different positions when impacted by external loads of different frequencies, and then increasing the diversity of the test data of this device.

[0053] After the test is completed, the operator controls the sliding frame 2 to reset through the control terminal. The sliding frame 2 drives the fixture 3 thereon to reset. Then the operator removes the object to be loaded from the fixture 3, and then turns off the sliding frame 2, the first electric push rod 4, the electromagnetic slider 603 and the second electric push rod 604 through the control terminal for the next use.

[0054] Such as Figure 4 、 Figure 7 and Figure 8As shown, it also includes: a fixed block 6 is slidably connected to two sliding rods 7 distributed symmetrically in the center, the sliding rods 7 can slide in the front and rear directions, a second elastic member is fixedly connected between the sliding rod 7 and the fixed block 6, the second elastic member is a tension spring, when the second elastic member is stretched and stored, the two sliding rods 7 distributed symmetrically in the center tend to move towards each other, a friction plate 8 is arranged on the side of the sliding rod 7 away from the fixed block 6, the hardness of the friction plate 8 is higher than that of the loaded object, the opposite sides of the two friction plates 8 are rough surfaces, the two friction plates 8 are respectively located on the front and rear sides of the loaded object, when the friction plate 8 slides horizontally, the loaded object is rubbed by the rough surface of the friction plate 8.

[0055] like Figure 4 and Figure 8 As shown, it also includes: an extrusion block 9, which has two centrally symmetrically distributed and are rotatably connected to the adjacent friction plates 8, and the extrusion block 9 is provided with guide inclined surfaces symmetrically distributed front and back. The extrusion block 9 is fixedly rotated 180° each time, so that when the extrusion block 9 moves from right to left passing the loaded object, there is always a guide inclined surface on the extrusion block 9 that can contact the loaded object, and the two extrusion blocks 9 are staggered up and down.

[0056] like Figure 7 and Figure 8 As shown, it also includes: two flexible blocks 10, which are centrally symmetrically distributed and respectively fixed to the right sides of adjacent extrusion blocks 9. The material of the flexible blocks 10 can be rubber. The flexible blocks 10 can be deformed when under pressure. The flexible blocks 10 are used to extrude the loaded objects.

[0057] The specific working principle is as follows:

[0058] When the loaded object is fixed to the clamp 3, the loaded object squeezes the guiding inclined surfaces of the two squeezing blocks 9, so that the front and rear squeezing blocks 9 move in the forward and rearward directions respectively, and the squeezing blocks 9 drive the sliding rod 7 to move through the friction plate 8, so that the second elastic member between the sliding rod 7 and the fixed block 6 is stretched and force is accumulated, and then the loaded object loses contact with the two squeezing blocks 9 and passes between the two flexible blocks 10, and the second elastic member between the sliding rod 7 and the fixed block 6 rebounds (the friction plate 8 is blocked by the loaded object, and the second elastic member between the sliding rod 7 and the fixed block 6 cannot rebound completely, and the second elastic member between the sliding rod 7 and the fixed block 6 is in a force accumulation state, so that the two sliding rods 7 symmetrically distributed in the center have a tendency to move oppositely, and the two friction plates 8 have a tendency to move oppositely, so that the friction plates 8 are close to the loaded object), when the loaded object is fixed to the two clamps 3, the loaded object is located between the two flexible blocks 10 and the fixed block 6.

[0059] During the reciprocating left - and - right movement of the fixed block 6, the fixed block 6 drives the sliding rod 7 to move left and right, and the sliding rod 7 drives the friction plate 8 to reciprocate left and right. During the reciprocating left - and - right movement of the friction plate 8, the object to be loaded is ground, causing scratches on the surface of the object to be loaded, simulating the situation where scratches appear on the object to be loaded during actual use (for example, the material and structure of the object to be loaded are used in construction, and scratches are generated due to rubbing during long - term use, or the use environment of the object to be loaded is a sand - and - wind or water - flow environment, and the object to be loaded will be affected by sand, wind and water flow and generate scratches during actual use). Thus, the data of the object to be loaded is more in line with the actual use situation, increasing the types of test data and improving the accuracy of test data.

[0060] During the right - ward movement of the friction plate 8, the friction plate 8 drives the flexible block 10 to move right - ward through the extrusion block 9. The flexible block 10 presses the object to be loaded, applying a bending moment force to the object to be loaded, simulating the situation where the object to be loaded has a tendency to bend when laterally stressed during actual use, thereby increasing the diversity of the test data of this device.

[0061] When it is not necessary to apply a bending moment force to the object to be loaded, before using this device, the operator manually rotates the extrusion block 9 by 180°. The flexible block 10 can no longer fit the object to be loaded, and the influence of the bending moment force on the object to be loaded can be removed.

[0062] After the test is completed, the operator controls the sliding frame 2 to reset through the control terminal. The sliding frame 2 drives the upper fixture 3 to reset. Then the operator moves the two sliding rods 7. The second elastic member between the sliding rod 7 and the fixed block 6 is stretched and stores energy, causing the sliding rod 7 to drive the friction plate 8 to move. The friction plate 8 no longer fits the object to be loaded. The friction plate 8 drives the extrusion block 9 to move, and the extrusion block 9 drives the flexible block 10 to move. The extrusion block 9 and the flexible block 10 no longer block the left side of the clamped object. The operator removes the object to be loaded from the fixture 3. After the operator removes the object to be loaded, the two sliding rods 7 are released. The second elastic member between the sliding rod 7 and the fixed block 6 no longer stretches and stores energy, and the sliding rod 7, the friction plate 8, the extrusion block 9 and the flexible block 10 move back to their original positions.

[0063] Such as Figure 4 、 Figure 7 And Figure 8As shown in the figure, it further includes: two first wedge blocks 11 that are symmetrically distributed about the center, and are respectively fixed to adjacent friction plates 8. The front first wedge block 11 is located below the adjacent friction plate 8, and the rear first wedge block 11 is located above the adjacent friction plate 8. The first wedge block 11 is provided with a first inclined surface. The first inclined surface of the front first wedge block 11 faces downward, and the first inclined surface of the rear first wedge block 11 faces upward; two second wedge blocks 12 that are symmetrically distributed about the center, and are respectively fixed to adjacent jigs 3. The front and rear end faces of the lower second wedge block 12 and the front and rear end faces of the adjacent first wedge block 11 are respectively located on the same vertical plane. The front and rear end faces of the upper second wedge block 12 and the front and rear end faces of the adjacent first wedge block 11 are respectively located on the same vertical plane. Both second wedge blocks 12 are provided with second inclined surfaces. After the first inclined surface of the first wedge block 11 contacts the second inclined surface of the adjacent second wedge block 12, the second inclined surface of the second wedge block 12 is used to guide the adjacent first wedge block 11, so that the first wedge block 11 moves obliquely along the second inclined surface of the adjacent second wedge block 12. The sliding rod 7 is slidably connected to the adjacent friction plate 8, and a third elastic member is fixed between the sliding rod 7 and the adjacent friction plate 8, and the third elastic member is a compression spring.

[0064] The specific working principle is as follows:

[0065] During the left-right reciprocating movement of the friction plate 8, the friction plate 8 drives the first wedge block 11 to move left and right reciprocally. When the telescopic end of the first electric push rod 4 drives the fixed block 6 to move up and down through the sliding block 5, the fixed block 6 drives the friction plate 8 to move up and down through the sliding rod 7. When the friction plate 8 drives the first wedge block 11 to move up and down to contact the second wedge block 12, taking the rear first wedge block 11 moving upward to contact the upper second wedge block 12 as an example, along with the reciprocating movement of the friction plate 8, when the friction plate 8 drives the first wedge block 11 to move left, the first wedge block 11 moves downward along the second inclined surface of the second wedge block 12, and the third elastic member between the sliding rod 7 and the adjacent friction plate 8 compresses and stores energy, changing the movement trajectory of the friction plate 8, thereby increasing the direction and form of the friction plate 8 scraping the object to be loaded, so as to increase the diversity of the test results of this device.

[0066] When the friction plate 8 drives the first wedge block 11 to move until it loses contact with the second wedge block 12, the third elastic member between the sliding rod 7 and the adjacent friction plate 8 rebounds and resets, causing the friction plate 8 to drive the first wedge block 11 to move back to its original position.

[0067] As Figures 7 - 9 shown in the figure, it further includes: an impact ball 13 rotatably connected to the fixed block 6, and the impact ball 13 is used to impact the object to be loaded.

[0068] As Figures 7 - 9As shown in the figure, the impact ball 13 is provided with impact portions 1301 distributed circumferentially. The hardness of the material of each impact portion 1301 is different. For example, the impact portions 1301 can be set to three distributed circumferentially. One of the impact portions 1301 can be made of flexible rubber material, and the other two impact portions 1301 can be made of metal materials with different hardnesses (such as stainless steel and aluminum). The impact ball 13 is fixedly connected with a rotating rod 14 that is rotatably connected to the fixed block 6. There is damping between the rotating rod 14 and the fixed block 6 to increase the resistance between the rotating rod 14 and the fixed block 6, so that the rotating rod 14 does not rotate when the rotating rod 14 is not actively rotated. By rotating the rotating rod 14, the positions of different impact portions 1301 on the impact ball 13 are adjusted, thereby changing the impact portion 1301 in contact with the object to be loaded.

[0069] The specific working principle is as follows:

[0070] In the above embodiment, the object to be loaded is impacted by the fixed block 6. In this embodiment, the object to be loaded is not impacted by the fixed block 6, but by different impact portions 1301 on the impact ball 13.

[0071] During the reciprocating movement of the fixed block 6, the fixed block 6 drives the impact ball 13 to reciprocate. The impact ball 13 impacts the object to be loaded through one of its impact portions 1301. Before using this device, the operator can manually drive the rotating rod 14 to rotate so that different impact portions 1301 are aligned with the object to be loaded. By utilizing the characteristics of different hardnesses of the materials of different impact portions 1301, the stress distribution state after being impacted by objects of various hardnesses during the actual use process of the object to be loaded is simulated, so that the test data of this device is more accurate and more representative.

[0072] After the test is completed, the operator controls the sliding frame 2 to reset through the control terminal. The sliding frame 2 drives the fixture 3 thereon to reset. Subsequently, the operator removes the object to be loaded from the fixture 3, and then closes the sliding frame 2, the first electric push rod 4, the electromagnetic slider 603, and the second electric push rod 604 through the control terminal for the next use.

[0073] In summary, the above is only a preferred embodiment of the present invention and is not used to limit the protection scope of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An adjustable three-dimensional mechanical loading test platform, characterized in that it includes: A bracket (1), the bracket (1) being slidably connected to a sliding frame (2), and both the sliding frame (2) and the bracket (1) being equipped with a clamp (3); A first electric push rod (4) is fixedly connected to the clamp (3) of the sliding frame (2), the telescopic portion of the first electric push rod (4) is slidably connected to a sliding block (5), and a first elastic member is fixedly connected between the telescopic portion of the first electric push rod (4) and the sliding block (5); A fixed block (6) fixedly connected to the sliding block (5); A trigger rod (601) is fixedly connected to the sliding block (5); a limiting rod (602) arranged on the clamp (3) of the sliding frame (2); the limiting rod (602) is used to limit the trigger rod (601) so that the trigger rod (601) is compressed and reciprocates; in the process of the trigger rod (601) moving up and down along the limiting rod (602), the trigger rod (601) moves back and forth left and right; the trigger rod (601) drives the fixed block (6) to move back and forth left and right through the sliding block (5); the fixed block (6) moves back and forth left and right to impact the loaded object; The end faces of the upper extrusion portion of the limit rod (602) and the telescopic end of the first electric push rod (4) that are perpendicular to the moving direction of the first electric push rod (4) are both planes. The trigger rod (601) is fixedly connected with symmetrically distributed deformation blocks, the deformation blocks are made of a flexible material, and the back-facing end faces of the symmetrically distributed deformation blocks on the trigger rod (601) are both parallel to the plane of the extrusion portion of the limit rod (602). The upper extrusion portion of the limit rod (602) is used to squeeze the symmetrically distributed deformation blocks on the trigger rod (601) so that the deformation blocks of the trigger rod (601) are deformed.

2. The adjustable three-dimensional mechanical loading test platform according to claim 1 is characterized in that: Also included are: An electromagnetic slider (603), the clamp (3) of the sliding frame (2) is provided with an electromagnetic slide rail, the electromagnetic slider (603) is slidably connected in the electromagnetic slide rail of the clamp (3) on the sliding frame (2), the electromagnetic slider (603) is slidably connected to the limit rod (602), and the electromagnetic slider (603) is used to drive the limit rod (602) to slide, so as to adjust the distance between the trigger rod (601) and the limit rod (602).

3. The adjustable three-dimensional mechanical loading test platform according to claim 2 is characterized in that: Also included are: The second electric push rod (604) is fixedly connected to the electromagnetic slider (603), and the telescopic portion of the second electric push rod (604) is fixedly connected to the limit rod (602). The limit rod (602) is provided with a plurality of extrusion portions distributed at intervals, and there is a gap between two adjacent extrusion portions on the limit rod (602), and the widths of all the gaps are different.

4. The adjustable three-dimensional mechanical loading test platform according to claim 1 is characterized in that: The fixed block (6) is slidably connected to two sliding rods (7) which are centrally symmetrically distributed, and a friction plate (8) is provided on a side of the sliding rod (7) away from the fixed block (6), and the opposite sides of the two friction plates (8) are both rough surfaces.

5. The adjustable three-dimensional mechanical loading test platform according to claim 4 is characterized in that: A second elastic member is fixedly connected between the sliding rod (7) and the fixing block (6).

6. The adjustable three-dimensional mechanical loading test platform according to claim 4 is characterized in that: Also included are: The extrusion blocks (9) have two extrusion blocks (9) which are centrally symmetrically distributed and are respectively rotatably connected to adjacent friction plates (8). The two extrusion blocks (9) are staggered in the upper and lower parts.

7. The adjustable three-dimensional mechanical loading test platform according to claim 6 is characterized in that: Also included are: The flexible blocks (10) have two centrally symmetrically distributed ones and are respectively fixed to one side of the adjacent extrusion block (9) close to the fixed block (6).

8. The adjustable three-dimensional mechanical loading test platform according to claim 6 is characterized in that: Also included are: The first wedge blocks (11) have two centrally symmetrically distributed ones and are respectively fixed to adjacent friction plates (8), and the first wedge blocks (11) are provided with a first inclined surface; The second wedge blocks (12) have two symmetrically distributed centrally and are respectively fixed to adjacent clamps (3). The two second wedge blocks (12) are each provided with a second inclined surface. The second inclined surface of the second wedge block (12) is used to guide the adjacent first wedge block (11). The sliding rod (7) is slidably connected to the adjacent friction plate (8). A third elastic member is fixed between the sliding rod (7) and the adjacent friction plate (8).

9. The adjustable three-dimensional mechanical loading test platform according to claim 1 is characterized in that: Also included are: An impact ball (13) is rotatably connected to the fixed block (6), the impact ball (13) is provided with circumferentially distributed impact parts (1301), each of the impact parts (1301) is made of a material with a different hardness, and the impact ball (13) is fixedly connected to a rotating rod (14) rotatably connected to the fixed block (6).

Images