Adjustable three-dimensional mechanical loading test platform

Abstract

The invention belongs to the technical field of mechanical loading tests, and particularly relates to an adjustable three-dimensional mechanical loading test platform. Comprising a support, the support is connected with a sliding frame in a sliding mode, and the sliding frame and the support are each provided with a clamp; the first electric push rod is fixedly connected to the clamp of the sliding frame, a telescopic part of the first electric push rod is connected with a sliding block in a sliding mode, and a first elastic piece is fixedly connected between the telescopic part of the first electric push rod and the sliding block; the fixed block is fixedly connected to the sliding block; the trigger rod is fixedly connected to the sliding block; and the limiting rod is arranged on the clamp of the sliding frame. According to the invention, the fixed block reciprocates to impact the loaded object, and in the process of performing a mechanical loading test on the loaded object, the influence of an external impact load on the loaded object is simulated, so that the mechanical loading test is more suitable for the actual use environment, and the test data obtained by the mechanical loading test is more representative.

Description

Technical Field

[0001] The invention belongs to the technical field of mechanical loading tests, and in particular to 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 conducting mechanical loading tests on new materials, the existing adjustable three-dimensional mechanical loading test platform generally fixes the loaded object and then directly applies loads to the loaded object. The applied load is generally the load that the loaded object is often subjected to during use. For example, tension and compression rods are generally subjected to tension loading and pressure loading tests on the mechanical loading platform to observe the stress distribution of the loaded object to learn the material and structural bearing capacity of the loaded object during actual use. However, the test platform is generally located in a laboratory with a relatively simple environment. However, in actual use, the loaded object is often in a specific environment for a long time, such as mechanical equipment parts with continuous vibration, rods used for drilling and excavation, and mechanisms that are susceptible to unexpected impact loads. This will cause the loaded object to be subjected to unexpected impacts in actual use. The existing test platform conducts mechanical loading tests on the loaded object in a single use environment, which is obviously not enough to analyze the stress distribution of the loaded object in different environments. This will lead to a large difference between the test data of the test platform and the actual use data in different environments, resulting in insufficient representativeness of the test data. Summary of the invention

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

[0004] The technical solution is: an adjustable three-dimensional mechanical loading test platform, including: A bracket, wherein the bracket is slidably connected to a sliding frame, and the sliding frame and the bracket are both equipped with a clamp; A first electric push rod is fixedly connected to the clamp of the sliding frame, the telescopic portion of the first electric push rod is slidably connected to a sliding block, and a first elastic member is fixedly connected between the telescopic portion of the first electric push rod and the sliding block; A fixed block, fixedly connected to the sliding block; A trigger rod, fixedly connected to the sliding block; A limiting rod is arranged on the clamp of the sliding frame, and the limiting rod is used to limit the trigger rod so that the trigger rod is compressed and reciprocates.

[0005] Furthermore, it also includes: An electromagnetic slider, the clamp of the sliding frame is provided with an electromagnetic slide rail, the electromagnetic slider is slidably connected in the electromagnetic slide rail of the clamp on the sliding frame, the electromagnetic slider is slidably connected to the limit rod, and the electromagnetic slider is used to drive the limit rod to slide to adjust the distance between the trigger rod and the limit rod.

[0006] Furthermore, it also includes: The second electric push rod is fixedly connected to the electromagnetic slider, the telescopic part of the second electric push rod is fixedly connected to the limit rod, the limit rod is provided with a plurality of extrusion parts distributed at intervals, there is a gap between two adjacent extrusion parts on the limit rod, and the widths of all the gaps are different.

[0007] Furthermore, the end faces of the extrusion portion on the limit rod and the moving direction of the telescopic end of the first electric push rod are both planes, the trigger rod is fixed with symmetrically distributed deformation blocks, the deformation blocks are made of flexible material, the back-facing end faces of the symmetrically distributed deformation blocks on the trigger rod are both parallel to the plane of the extrusion portion of the limit rod, and the extrusion portion on the limit rod is used to extrude the symmetrically distributed deformation blocks on the trigger rod to cause the deformation blocks of the trigger rod to deform.

[0008] Furthermore, the fixed block is slidably connected to two sliding rods that are centrally symmetrically distributed, a friction plate is provided on one side of the sliding rod away from the fixed block, and the opposite sides of the two friction plates are both rough surfaces.

[0009] Furthermore, a second elastic member is fixedly connected between the sliding rod and the fixing block.

[0010] Furthermore, it also includes: The extrusion blocks include two extrusion blocks which are centrally symmetrically distributed and are respectively rotatably connected to the adjacent friction plates. The two extrusion blocks are staggered in the upper and lower parts.

[0011] Furthermore, it also includes: The flexible blocks have two parts which are centrally symmetrically distributed and are respectively fixed to one side of the adjacent extrusion block close to the fixed block.

[0012] Furthermore, it also includes: The first wedge blocks have two symmetrically distributed centrally and are respectively fixed to the adjacent friction plates, and the first wedge blocks are provided with a first inclined surface; The second wedge blocks have two symmetrically distributed centrally and are respectively fixed to adjacent clamps. The two second wedge blocks are both provided with a second inclined surface. 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.

[0013] Furthermore, it also includes: The impact ball is rotatably connected to the fixed block. The impact ball is provided with circumferentially distributed impact parts. The hardness of the material of each impact part is different. The impact ball is fixed with a rotating rod rotatably connected to the fixed block.

[0014] Compared with the prior art, the present invention has the following advantages: 1. The present invention uses a fixed block to reciprocate to impact the loaded object, and in the process of performing a mechanical loading test on the loaded object, simulates the influence of an external impact load on the loaded object, so that the mechanical loading test is more in line with the actual use environment, and further makes the test data obtained by the mechanical loading test more representative; 2. By changing the distance that the trigger rod moves, the force of the fixed block impacting the loaded object changes, so as to simulate the changes in stress distribution of the loaded object under different external loads in different real-life use environments, thereby increasing the diversity of the test data of the device; 3. By adjusting the position of the extrusion part on the limit rod, the reciprocating position of the trigger rod is changed, so that the position and frequency of the reciprocating movement of the sliding block and the fixed block are changed, simulating the change of the stress distribution of the loaded object when different positions of the loaded object are impacted by external loads of different frequencies, thereby increasing the diversity of the test data of this device; 4. The friction plate is reciprocated to grind the loaded object, so that scratches appear on the surface of the loaded object, simulating the situation in which the loaded object is in a windy sand and water flow environment and is affected by windy sand and water flow and scratches appear in the actual use process, so that the data of the loaded object is more in line with the actual use situation, so as to increase the types of test data and improve the accuracy of test data; 5. The flexible block is driven to move by the extrusion block, so that the flexible block squeezes the loaded object and applies a bending moment force to the loaded object, simulating the bending tendency of the loaded object when it is subjected to lateral force during actual use, so that the mechanical loading test is more in line with unexpected situations in actual use; 6. By moving the first wedge block along the second inclined surface of the second wedge block, the motion trajectory of the friction plate is changed, thereby increasing the direction and form of the friction plate scratching the loaded object, so as to increase the diversity of the test results of the device; 7. Use impact parts of different materials to impact the loaded object, simulating the stress distribution state of the loaded object after being impacted by objects of various hardness during actual use, so as to make the test data of the device more accurate and more representative. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2It is a three-dimensional structural schematic diagram of the clamp of the present invention; Figure 3 It is a schematic diagram of the three-dimensional structure of the sliding block of the present invention; Figure 4 It is a schematic diagram of the three-dimensional structure of the fixing block of the present invention; Figure 5 It is a schematic diagram of the three-dimensional structure of the limiting rod of the present invention; Figure 6 It is a schematic diagram of the three-dimensional structure of the electromagnetic slider of the present invention; Figure 7 It is a schematic diagram of the three-dimensional structure of the extrusion block of the present invention; Figure 8 It is a schematic diagram of the three-dimensional structure of the flexible block of the present invention; Fig. 9 It is a schematic diagram of the three-dimensional structure of the impact part of the present invention.

[0016] Explanation of the reference numerals in the accompanying drawings: 1. bracket, 2. sliding frame, 3. clamp, 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 DESCRIPTION

[0017] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0018] An adjustable three-dimensional mechanical loading test platform, such as Figure 1-Figure 6As shown, it includes: a bracket 1, the bracket 1 is provided with a control terminal not shown in the figure, the bracket 1 is slidably connected with a sliding frame 2, 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, the sliding frame 2 and the bracket 1 are both installed with a clamp 3, the clamp 3 consists of a fixed seat for installation and a clamping clamp for clamping an object, the two clamps 3 are distributed opposite to each other up and down, and are used to fix the loaded object, the sliding frame 2 drives the clamp 3 thereon to move vertically by vertical movement, so that the two clamps 3 can move relative to each other, apply tension or pressure to the loaded object, and adjust the relative movement speed of the two clamps 3 by adjusting the moving speed of the sliding frame 2, so as to realize the adjustment of tension and pressure loading; a first electric push rod 4, fixed to the clamp 3 of the sliding frame 2, the first electric The push rod 4 is electrically connected to the control terminal, the telescopic part of the first electric push rod 4 is slidably connected with the sliding block 5, the telescopic part of the first electric push rod 4 faces downward, and 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, wherein 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, and a position of the trigger rod 601 away from the sliding block 5 is provided with a compressed inclined surface distributed up and down; a limit rod 602 is arranged on the clamp 3 of the sliding frame 2, and the upper and lower end surfaces of the extrusion part on the limit rod 602 are both planes, and the trigger rod 601 is fixedly connected with two deformation blocks symmetrically distributed up and down, and the back side end surfaces of the two deformation blocks on the trigger rod 601 are parallel to the horizontal plane, and the deformation block is made of flexible material. Figure 1The positive projection on the main view is a triangle, and the end faces of the symmetrically distributed deformation blocks on the trigger rod 601 facing away from the side are parallel to the plane of the extrusion portion of the limit rod 602. The extrusion portion on the limit rod 602 is used to squeeze the symmetrically distributed deformation blocks on the trigger rod 601 to deform the deformation blocks of the trigger rod 601. At the moment when the trigger rod 601 loses contact with an extrusion portion on the limit rod 602, the first elastic member between the telescopic portion of the first electric push rod 4 and the sliding block 5 rebounds quickly, and 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 portion, so that the sliding block 5 drives the trigger rod 601 The trigger rod 601 and the fixing block 6 quickly move to the left to ensure the impact force of the fixing block 6 on the loaded object. The length of the compressed inclined surface of the trigger rod 601 in the left and right directions is greater than the length of any extrusion portion on the limiting rod 602 in the left and right directions. The extrusion portion of the limiting rod 602 is used to extrude the deformation block of the trigger rod 601. When the trigger rod 601 moves up and down, the deformation block on one side thereof extrude the limiting rod 602. 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 surface, so that the trigger rod 601 is compressed and reciprocates in the left and right directions while moving up and down.

[0019] like Figure 5 and Figure 6 As shown, it also includes: an electromagnetic slider 603, the clamp 3 of the sliding frame 2 is provided with an electromagnetic slide rail electrically connected to the control terminal, the electromagnetic slider 603 is slidably connected to the electromagnetic slide rail of the clamp 3 on the sliding frame 2, so that the electromagnetic slider 603 can move left and right in the electromagnetic slide 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, and the electromagnetic slider 603 is used to drive the limit rod 602 to slide left and right 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 part on the limit rod 602, and then changing the amplitude of the left and right reciprocating movement of the trigger rod 601.

[0020] like Figure 5 and Figure 6 As shown, it also includes: a second electric push rod 604, which is 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, and the limit rod 602 is driven to move up and down by the telescopic part of the second electric push rod 604, thereby adjusting the positions of all the extrusion parts on the limit rod 602, and the limit rod 602 is provided with a plurality of extrusion parts distributed at intervals, and there is a gap between two adjacent extrusion parts on the limit rod 602, and the widths of all the gaps in the up and down directions are different.

[0021] The specific working principle is as follows: When the operator needs to use this device to perform a mechanical loading test, the operator fixes the upper and lower ends of the loaded object through the clamp 3, and the loaded object is close to the fixed block 6, so that the fixed block 6 squeezes the sliding block 5 to the right, and the sliding block 5 moves to the right. The first elastic part between the telescopic part of the first electric push rod 4 and the sliding block 5 is compressed and stored. Then the operator controls the movement of the sliding frame 2 through the control terminal, and the sliding frame 2 drives the clamp 3 thereon to move. If a pulling force needs to be applied to the loaded object, the sliding frame 2 drives the clamp 3 thereon to move upward, and the two clamps 3 move back to back and apply pulling force to the loaded object. If pressure needs to be applied to the loaded object, the sliding frame 2 drives the clamp 3 thereon to move downward, and the two clamps 3 move towards each other and apply pressure to the loaded object.

[0022] Since the loaded object will not only be subjected to simple compression and tension during actual use, if it is necessary to simulate the impact of external impact load on the loaded object, the operator turns on the first electric push rod 4 through the control terminal, and 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. When a deformation block of the trigger rod 601 moves to contact an adjacent extrusion portion on the limit rod 602, taking the sliding block 5 driving the trigger rod 601 to move downward as an example, due to the obstruction of the extrusion portion on the limit rod 602, a deformation block of the trigger rod 601 is deformed and forms an inclined surface, and the trigger rod 601 is moved upward and downward. 1 moves upward, the trigger rod 601 moves along the adjacent extrusion portion on the limit rod 602, so that the trigger rod 601 moves to the right during the downward movement, and the first elastic member between the telescopic portion of the first electric push rod 4 and the sliding block 5 is further compressed. When the trigger rod 601 moves to lose contact with the adjacent extrusion portion on the limit rod 602, the deformation block of the trigger rod 601 rebounds and resets, and the first elastic member between the telescopic portion of the first electric push rod 4 and the sliding block 5 rebounds, and the trigger rod 601 moves to the left, and so on. In the process of the trigger rod 601 moving up and down along the limit rod 602, the trigger rod 601 moves back and forth left and right, and the trigger rod 601 drives the fixed block 6 to move back and forth left and right through the sliding block 5.

[0023] During the up and down movement of the fixed block 6, the fixed block 6 moves back and forth left and right to impact the loaded object. During the mechanical loading test on the loaded object, the influence of the external impact load on the loaded object is simulated, so that the mechanical loading test is more in line with the actual use environment, and the test data obtained from the mechanical loading test is more representative.

[0024] When the operator needs to adjust the impact force of the fixed block 6 on the loaded object, the operator turns on the electromagnetic slide rail through the control terminal to make the electromagnetic slider 603 move left and right. For example, to increase the impact force of the fixed block 6 on the loaded object, the operator controls the electromagnetic slider 603 to move right, and the electromagnetic slider 603 drives the limit rod 602 to move right. The range of the extrusion part on the limit rod 602 to squeeze the trigger rod 601 increases, so that after the trigger rod 601 contacts the extrusion part on the limit rod 602, the distance the trigger rod 601 moves to the right increases, and the distance the trigger rod 601 drives the sliding block 5 to move to the right increases, 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 is increased. When the trigger rod 601 loses contact with the extrusion portion on the limit rod 602, the rebound amount of the first elastic member between the telescopic portion of the first electric push rod 4 and the sliding block 5 is increased, thereby increasing the impact force of the fixed block 6 on the loaded object, so as to simulate the changes in the stress distribution of the loaded object when it is subjected to different external loads in different real use environments, thereby increasing the diversity of the test data of the device, and the operator can drive the limit rod 602 to move leftward through the electromagnetic slider 603 until it is temporarily no longer in contact with the trigger rod 601, so as to control the trigger rod 601 to stop reciprocating left and right, so that the trigger rod 601 no longer drives the fixed block 6 to move left and right through the sliding block 5 to impact the loaded object.

[0025] When the operator needs to adjust the frequency and position of the fixed block 6 impacting the loaded object, the operator turns on the second electric push rod 604 through the control terminal, and 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 the extrusion part on it changes, and the left and right reciprocating position of the trigger rod 601 is changed, so that the left and right reciprocating 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 will also change, simulating the changes in the stress distribution of the loaded object when different positions of the loaded object are impacted by external loads of different frequencies, thereby increasing the diversity of the test data of the device.

[0026] When the test is completed, the operator controls the sliding frame 2 to reset through the control terminal, and the sliding frame 2 drives the clamp 3 thereon to reset. Then the operator removes the loaded object from the clamp 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.

[0027] like 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.

[0028] 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.

[0029] 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.

[0030] The specific working principle is as follows: 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.

[0031] During the reciprocating 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 move back and forth. During the reciprocating movement of the friction plate 8, the loaded object is ground to cause scratches on the surface of the loaded object, simulating the situation in which scratches appear on the loaded object during actual use (for example, the material and structure of the loaded object are used in construction, and scratches are generated during long-term use, or the use environment of the loaded object is a windy sand and water flow environment, and the loaded object will be affected by windy sand and water flow to generate scratches during actual use), so that the data of the loaded object is more in line with the actual use situation, so as to increase the types of test data and improve the accuracy of the test data.

[0032] When the friction plate 8 moves to the right, the friction plate 8 drives the flexible block 10 to move to the right through the extrusion block 9. The flexible block 10 squeezes the loaded object and applies a bending moment to the loaded object, simulating the bending tendency of the loaded object when it is subjected to lateral force during actual use, thereby increasing the diversity of the test data of the device.

[0033] When there is no need to apply bending moment to the loaded object, the operator manually rotates the extrusion block 9 180° before using the device, so that the flexible block 10 can no longer fit the loaded object, thereby eliminating the influence of the bending moment on the loaded object.

[0034] When the test is completed, the operator controls the sliding frame 2 to reset through the control terminal, and the sliding frame 2 drives the clamp 3 thereon to reset. Then the operator moves the two sliding rods 7, and the second elastic member between the sliding rod 7 and the fixed block 6 is stretched and stored, so that the sliding rod 7 drives the friction plate 8 to move, and the friction plate 8 no longer fits the loaded object, and the friction plate 8 drives the extrusion block 9 to move, and the extrusion block 9 drives the flexible block 10 to move, and the extrusion block 9 and the flexible block 10 no longer block the left side of the clamped object, and the operator removes the loaded object from the clamp 3. After removing the loaded object, the operator releases the two sliding rods 7, and the second elastic member between the sliding rod 7 and the fixed block 6 is no longer stretched and stored, and the sliding rod 7, friction plate 8, extrusion block 9 and flexible block 10 move and reset.

[0035] like Figure 4 , Figure 7 and Figure 8As shown, it also includes: a first wedge block 11, which has two centrally symmetrically distributed and are respectively fixed to the adjacent friction plates 8, the front first wedge block 11 is located at the lower side of the adjacent friction plate 8, and the rear first wedge block 11 is located at the upper side of the adjacent friction plate 8, and 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; a second wedge block 12, which has two centrally symmetrically distributed and are respectively fixed to the adjacent clamps 3, and the front and rear end surfaces of the lower second wedge block 12 and the front and rear end surfaces 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, and the two second wedge blocks 12 are both provided with a second inclined surface. 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, wherein the third elastic member is a compression spring.

[0036] The specific working principle is as follows: During the reciprocating movement of the friction plate 8, the friction plate 8 drives the first wedge block 11 to reciprocate left and right. 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. The friction plate 8 drives the first wedge block 11 to move up and down until it contacts 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, accompanied by the reciprocating movement of the friction plate 8, when the friction plate 8 drives the first wedge block 11 to move to the 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 is compressed and stored, changing the movement trajectory of the friction plate 8, thereby increasing the direction and form of the friction plate 8 scratching the loaded object, so as to increase the diversity of the test results of the device.

[0037] 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, so that the friction plate 8 drives the first wedge block 11 to move and reset.

[0038] like Figure 7-Figure 9 As shown, it also includes: an impact ball 13, which is rotatably connected to the fixed block 6, and the impact ball 13 is used to impact the loaded object.

[0039] like Figure 7-Figure 9As shown, the impact ball 13 is provided with circumferentially distributed impact parts 1301, and the hardness of the material of each impact part 1301 is different. For example, the impact parts 1301 can be set to be three circumferentially distributed, one of the impact parts 1301 can be made of a flexible rubber material, and the other two impact parts 1301 can be made of metal materials with different hardness (such as stainless steel and aluminum). The impact ball 13 is fixedly connected to a rotating rod 14 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. When the rotating rod 14 is not actively rotated, the rotating rod 14 does not rotate. By rotating the rotating rod 14, the position of different impact parts 1301 on the impact ball 13 is adjusted, thereby changing the impact part 1301 in contact with the loaded object.

[0040] The specific working principle is as follows: In the above embodiment, the loaded object is impacted by the fixed block 6 . In this embodiment, the loaded object is no longer impacted by the fixed block 6 , but is impacted by different impact parts 1301 on the impact ball 13 .

[0041] During the reciprocating movement of the fixed block 6, the fixed block 6 drives the impact ball 13 to reciprocate, and the impact ball 13 impacts the loaded object through the impact part 1301 thereon. Before using the present device, the operator can manually drive the rotating rod 14 to rotate so that different impact parts 1301 are aligned with the loaded object. The different hardness characteristics of the materials of different impact parts 1301 are utilized to simulate the stress distribution state of the loaded object after being impacted by objects of various hardnesses during actual use, thereby making the test data of the present device more accurate and more representative.

[0042] When the test is completed, the operator controls the sliding frame 2 to reset through the control terminal, and the sliding frame 2 drives the clamp 3 thereon to reset. Then the operator removes the loaded object from the clamp 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.

[0043] In summary, the above are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should 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) is arranged on the clamp (3) of the sliding frame (2), and the limiting rod (602) is used to limit the trigger rod (601) so that the trigger rod (601) is compressed and reciprocates.

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 2 is characterized in that: 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.

5. 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.

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

7. The adjustable three-dimensional mechanical loading test platform according to claim 5 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.

8. The adjustable three-dimensional mechanical loading test platform according to claim 7 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).

9. The adjustable three-dimensional mechanical loading test platform according to claim 7 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).

10. 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).

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