Horizontal continuous impact test device and test method

Abstract

The invention discloses a horizontal continuous impact test device and method, and particularly relates to the technical field of mechanical environment tests.The horizontal continuous impact test device comprises a test base, a force bearing seat and a workpiece assembly seat are installed at the top of the test base, and a through installation frame is installed in the middle of the force bearing seat; an impact test rod directly facing the workpiece assembly seat is slidably connected to the mounting rack, and a transmission block is mounted in the middle of the impact test rod. A motor supporting frame is mounted on the outer side of the mounting frame, a first servo motor is mounted on the outer side of the motor supporting frame, an output shaft of the first servo motor penetrates through the mounting frame to be provided with an adjusting shaft, a linkage shaft is mounted at the end of the adjusting shaft, a driving ring is hinged to the middle of the linkage shaft, and a first annular groove is formed in the middle of the outer side of the driving ring. The transmission block is slidably connected into the first annular groove, and an adjusting mechanism used for adjusting the inclination angle of the driving ring is installed in the force bearing base. Through rotation of the inclined driving ring, a continuous horizontal impact test is realized.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of mechanical environment test, in particular to a horizontal continuous impact test device and test method. BACKGROUND

[0002] In order to deeply study the influence mechanism of structure design and manufacturing parameters of key components of wind power transmission chain on its reliability, it is necessary to carry out performance test research of wind power transmission chain under complex load conditions. Due to the particularity of installation and operation of wind power equipment, it is very difficult to carry out real working condition operation test of wind power transmission system in high altitude open field. Therefore, laboratory level wind power transmission chain simulation test is the main technical means of current transmission chain scientific test research, which plays an irreplaceable role in understanding the influence relationship of design and manufacturing technical parameters of transmission chain components on its technical performance and reliability and developing high performance transmission chain component design and manufacturing technology. The biggest particularity of wind load is its irregular alternating characteristics, therefore, the damage, fatigue evolution process and structure failure development law of key transmission components under alternating wind load have outstanding particularity. However, most of the commonly used wind power transmission chain simulation test devices can only load main torsional load, and cannot simulate various types and directions of loads other than main torsional moment, including the axial impact of impeller on transmission chain under wind load, and the horizontal and vertical bending moment in the process of yawing and variable pitch, which cannot meet the requirements of in-depth design and manufacturing and structure performance scientific research, and greatly limits the experimental research work of wind power transmission system and the accuracy and usability of related research results. Therefore, the design and development of a test device capable of simulating multi-directional alternating wind load have extremely important scientific significance for carrying out reliability research and design and manufacturing technology research of wind power transmission chain.

[0003] The devices for carrying out structure impact test mainly include Hopkinson bar test device and drop hammer impact device. However, the impact load generated by these loading devices is mostly one-time pulse load, it is difficult to realize continuous application of impact load, and it is impossible to clearly provide the fatigue damage information of the test piece structure under continuous impact load, and we propose a horizontal continuous impact test device and test method to solve the above problems. SUMMARY

[0004] The purpose of the present application is to provide a horizontal continuous impact test device and test method to solve the problems raised in the background art.

[0005] In order to achieve the above purpose, the present application provides the following technical scheme: a horizontal continuous impact test device, comprising a test base, a bearing seat and a workpiece assembly seat are installed on the top of the test base, a through mounting frame is installed in the middle of the bearing seat, an impact test rod opposite to the workpiece assembly seat is slidably connected on the mounting frame, a transmission block is installed in the middle of the impact test rod. The outer side of the mounting frame is provided with a motor support frame, the outer side of the motor support frame is provided with a first servo motor, the output shaft of the first servo motor is provided with an adjusting shaft through the mounting frame, the end of the adjusting shaft is provided with a linkage shaft, the middle of the linkage shaft is hingedly connected with a driving ring, the middle of the outer side of the driving ring is provided with an annular groove one, the transmission block is slidingly connected in the annular groove one, the force bearing seat is provided with an adjusting mechanism for adjusting the inclination angle of the driving ring.

[0006] Preferably, the outer side of the mounting frame is provided with a connecting pipeline, the top of the test base is provided with a placing seat, the end of the connecting pipeline is placed on the placing seat, and the end of the connecting pipeline is slidingly connected with a slidable impact detection assembly; The impact test rod is slidingly connected in the connecting pipeline through the mounting frame relative to the end of the workpiece assembly seat, and the impact detection assembly can be pushed by air pressure.

[0007] Preferably, the impact test rod comprises an impact test rod body, an impact test head, a first spring and a first pressure sensor. The transmission block is installed in the middle of the impact test rod body through bolts, the end of the impact test rod body opposite to the workpiece assembly seat is slidingly connected with the impact test head, the end of the impact test head in the impact test rod body is provided with the first spring, and the end of the first spring is installed in the end of the impact test rod body; The first pressure sensor is installed between the end of the impact test head in the impact test rod body and the impact test rod body.

[0008] Preferably, the impact detection assembly comprises a second pressure sensor, an impact detection sealing seat, an impact detection head and a second spring. The impact detection sealing seat is slidingly connected in the inner side of the connecting pipeline, the end of the impact detection sealing seat is slidingly connected with the impact detection head which can be extended out of the connecting pipeline, the end of the impact detection head in the impact detection sealing seat is installed on the second spring, and one end of the second spring is installed in the impact detection sealing seat; The second pressure sensor is installed between the end of the impact detection head in the impact detection sealing seat and the impact detection sealing seat.

[0009] Preferably, the mounting frame comprises a first mounting plate, a connecting support plate, a mounting ring plate and a connecting flange plate. A connecting support plate is installed on the inner outer circumference of the first mounting plate. A mounting ring plate is installed on the end of the connecting support plate relative to the first mounting plate. The mounting ring plate is installed on the bearing seat by bolts. The connecting support plate is located inside the bearing seat. The connecting pipe is installed on the outside of the mounting ring plate by bolts. The impact test rod is slidably connected to the first mounting plate. The end of the first mounting plate passes through the inside of the mounting ring plate and extends into the connecting pipe. The motor support frame is installed in the middle of the outer side of the mounting ring plate.

[0010] Preferably, the adjusting mechanism includes a linkage rod and an adjusting disc; The adjusting disc is slidably inserted into the outside of the adjusting shaft and can rotate synchronously with the adjusting shaft. The drive ring and the adjusting disc are connected by a linkage rod at the inner off-center position via a shaft pin.

[0011] Preferably, the adjusting mechanism further includes a drive shaft, an external threaded sleeve, and a drive wheel; The external threaded sleeve is installed in the middle of the transmission wheel. An annular groove is provided on the outer side of the adjusting disc. The transmission wheel is located in the annular groove. The transmission shaft is slidably connected to the external threaded sleeve and can rotate together with the connecting support plate. The external threaded sleeve passes through the mounting ring plate and extends into the motor support frame, and is threadedly connected to the mounting ring plate.

[0012] Preferably, a driven gear is mounted on the end of the drive shaft with an external threaded sleeve. The driven gear is hinged to the inner side of the motor support frame. An internal gear ring meshes with the outer side of the driven gear. A driving gear meshes with the inner side of the internal gear ring. The driving gear is hinged to the inner side of the motor support frame. A second servo motor is mounted on the outer side of the motor support frame. The output shaft of the second servo motor is connected to the driving gear.

[0013] Preferably, the output shaft of the first servo motor is equipped with a connecting flange, and the connecting flange is connected to the end of the adjusting shaft by bolts; The drive ring has a straight groove at its center, and a fixing pin is provided in the straight groove. The linkage shaft is rotatably connected to the part of the fixing pin that is in the straight groove. The fixing pin extends from the side wall of the annular groove into the straight groove and is threadedly connected to the drive ring. The test base is equipped with a PLC control terminal, and its first pressure sensor, first servo motor, second servo motor and second pressure sensor are electrically connected to the PLC control terminal. The placement base includes a placement base, a placement groove, and a clamping arc-shaped spring sheet; The top of the placement base is provided with a placement groove, and a clamping arc-shaped spring is installed at the top of the inner side of the placement groove. The end of the connecting pipe can be placed in the placement groove, and when the end of the connecting pipe is placed in the placement groove, the clamping arc-shaped spring contacts the connecting pipe to lock the position of the connecting pipe.

[0014] A test method for a horizontal continuous impact testing device includes the following steps: Step 1: The PLC control terminal controls the first servo motor to maintain a constant output and drives the adjustment shaft and linkage shaft to rotate, which in turn drives the drive ring to rotate. Driven by the inclined drive ring and the transmission block, the impact test rod continuously extends and retracts to perform the impact test. The extension and retraction of the impact test rod changes the air pressure in the connecting pipe, which in turn drives the impact detection component to perform the impact test. Through the connecting pipe, the impact detection component can move freely to perform the test. Step 2: The pressure feedback generated by the first and second pressure sensors during impact is used by the PLC control terminal to generate control information based on the feedback pressure information and transmit it to the second servo motor. Step 3: The second servo motor drives the active gear to rotate, and drives the internal gear ring to drive the driven gear. Driven by the driven gear, the transmission shaft rotates, which in turn drives the external threaded sleeve to rotate. The external threaded sleeve moves relative to the mounting ring plate, and drives the adjusting disc to move. Through the linkage of the linkage rod, the tilt angle of the drive ring is changed to precisely control the impact force.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. This horizontal continuous impact testing device, through the rotation of the inclined drive ring, enables the impact test rod to continuously extend and retract, thereby conducting impact tests. This achieves the continuity of horizontal impact testing. Furthermore, through the setting of connecting pipes, when the impact test rod extends and retracts to generate air pressure, the impact detection component can then conduct impact tests. This allows the impact detection component to freely and continuously conduct impact tests, adapting to the testing of irregularly shaped parts, thus broadening its versatility.

[0016] 2. This horizontal continuous impact testing device, through the adjustment mechanism, allows the drive ring to change its tilt angle. By changing the tilt angle of the drive ring, the length of the impact test rod stroke and the acceleration at the same time can be changed, thus adapting to tests with different impact forces and making it more convenient to use. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a structural schematic diagram from another perspective of the present invention; Figure 3 This is a schematic diagram of the structure from the perspective of the connecting pipe in this invention; Figure 4 This is a schematic diagram of the internal components of the bearing seat in this invention; Figure 5 This is a schematic diagram of the linkage shaft connection in this invention; Figure 6 This is a schematic diagram of the drive ring connection in this invention; Figure 7 This is a schematic diagram of the internal toothed ring connection in this invention; Figure 8 This is a cross-sectional schematic diagram of the connecting pipe in this invention; Figure 9 This is a schematic diagram of the impact test rod connection structure in this invention; Figure 10 This is a schematic diagram of the cross-sectional view of the impact test rod connection in this invention; Figure 11 This is a schematic diagram of the structure of the placement seat in this invention.

[0019] In the diagram: 1. Test base; 2. Support seat; 3. Workpiece assembly seat; 4. Placement seat; 401. Placement base; 402. Placement groove; 403. Clamping arc-shaped spring; 51. Impact test rod; 52. Mounting bracket; 53. First servo motor; 54. Second servo motor; 55. Adjustment mechanism; 56. Transmission block; 57. Linkage shaft; 58. Drive ring; 59. Adjustment shaft; 511. Impact test rod body; 512. Impact test head; 513. First spring; 514. First pressure transmission... 521. First mounting plate; 522. Connecting support plate; 523. Mounting ring plate; 524. Connecting flange; 525. Driving gear; 526. Driven gear; 527. Internal gear ring; 551. Drive shaft; 552. External threaded sleeve; 553. Drive wheel; 554. Linkage rod; 555. Adjusting disc; 6. Connecting pipe; 601. Second pressure sensor; 602. Impact detection sealing seat; 603. Impact detection head; 604. Second spring; 7. Motor support frame. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Example: Figures 1-11 As shown, the present invention provides a horizontal continuous impact testing device, including a test base 1, a load-bearing seat 2 and a workpiece assembly seat 3 mounted on the top of the test base 1, a through mounting frame 52 mounted in the middle of the load-bearing seat 2, an impact test rod 51 slidably connected to the mounting frame 52 facing the workpiece assembly seat 3, and a transmission block 56 mounted in the middle of the impact test rod 51; A motor support frame 7 is mounted on the outside of the mounting bracket 52. A first servo motor 53 is mounted on the outside of the motor support frame 7. An adjustment shaft 59 is mounted through the mounting bracket 52. A linkage shaft 57 is mounted at the end of the adjustment shaft 59. A drive ring 58 is hinged in the middle of the linkage shaft 57. An annular groove is formed in the middle of the outer side of the drive ring 58. The transmission block 56 is slidably connected in the annular groove. An adjustment mechanism 55 for adjusting the tilt angle of the drive ring 58 is installed in the bearing seat 2.

[0022] It should be noted that the workpiece is fixed to the workpiece assembly seat 3 by bolts or external clamping components. The method of fixing the workpiece is not limited here. The impact test rod 51 is used to perform an impact test on the workpiece on the workpiece assembly seat 3. The output shaft of the first servo motor 53 drives the adjustment shaft 59 to rotate, which in turn drives the linkage shaft 57 to rotate. The rotation of the linkage shaft 57 drives the drive ring 58 to rotate continuously. Under the rotation of the inclined drive ring 58, the transmission block 56 located in the annular groove on the outer side of the drive ring 58 can generate the effect of continuously extending and retracting the impact test rod 51, thereby improving the continuity of the impact test. In addition, the end of the transmission block 56 that is slidably connected in the annular groove is spherical, and the part that is mounted on the impact test rod 51 is conical. The small diameter end of the conical shape is connected to the spherical end, and the connection between the conical end and the spherical end is outside the annular groove. This can generate a larger clearance space, making the deflection space of the drive ring 58 larger, effectively increasing the space utilization rate, and increasing the adjustable space of the drive ring 58. Based on the above, by adjusting the deflection angle of the drive ring 58, the travel distance and instantaneous acceleration of the transmission block 56 can be changed. While the travel distance is increased, the acceleration is faster, and the time required is the same, so as to change the impact force and thus adapt to different levels of impact tests.

[0023] Furthermore, a connecting pipe 6 is installed on the outside of the mounting bracket 52, a placement seat 4 is installed on the top of the test base 1, the end of the connecting pipe 6 is placed on the placement seat 4, and an impact detection component that can be slid out is slidably connected inside the end of the connecting pipe 6. The end of the impact test rod 51 relative to the workpiece assembly seat 3 is slidably connected to the connecting pipe 6 through the mounting bracket 52, and can be pushed by air pressure to push the impact detection component.

[0024] It should be noted that, under the extension and contraction of the impact test rod 51 during the impact test, the end of the impact test rod 51 inside the connecting pipe 6 slides relative to the other end, which in turn changes the air pressure inside the connecting pipe 6. Through the change of air pressure inside the connecting pipe 6, the impact detection component can be pushed to slide, and then extend out of the connecting pipe 6 to contact the workpiece and conduct an impact test on the workpiece. Especially when impacting irregularly shaped parts, the impact detection component can move freely to conduct the impact test through the connecting pipe 6. Based on the above, when the tilt angle of the drive ring 58 is changed, the stroke and instantaneous acceleration of the impact test rod 51 change, and the instantaneous compression of the air pressure in the connecting pipe 6 changes. Therefore, when the impact force of the impact test rod 51 on the workpiece changes, the impact force of the impact detection component on the workpiece also changes, and the change adapts (that is, when the impact force of the impact test rod 51 on the workpiece increases, the impact force of the impact detection component on the workpiece also increases).

[0025] Furthermore, the impact test rod 51 includes an impact test rod body 511, an impact test head 512, a first spring 513, and a first pressure sensor 514; The transmission block 56 is bolted to the middle of the impact test rod 511. The impact test rod 511 is slidably connected to the end of the workpiece assembly seat 3. The end of the impact test head 512 inside the impact test rod 511 is equipped with a first spring 513, and the end of the first spring 513 is installed inside the end of the impact test rod 511. A first pressure sensor 514 is installed between the end of the impact test head 512 located inside the impact test rod 511 and the impact test rod 511.

[0026] It should be noted that the first spring 513 can smoothly push the impact test head 512 to automatically extend and return to its original position on the impact test rod 511. When the impact test rod 511 is conducting the impact test, the impact test head 512 contacts the workpiece and then moves into the impact test rod 511. The pressure generated by the impact is transmitted to the first pressure sensor 514. By monitoring the pressure through the first pressure sensor 514, the impact force can be monitored in real time, thereby accurately obtaining the test data and ensuring the accuracy of the test.

[0027] Furthermore, the impact detection assembly includes a second pressure sensor 601, an impact detection sealing seat 602, an impact detection head 603, and a second spring 604; The impact detection sealing seat 602 is slidably connected to the inside of the connecting pipe 6. An impact detection head 603 that can extend out of the connecting pipe 6 is slidably connected to the end of the impact detection sealing seat 602. The end of the impact detection head 603 inside the impact detection sealing seat 602 is installed with a second spring 604. One end of the second spring 604 is installed inside the impact detection sealing seat 602. A second pressure sensor 601 is installed at the end of the impact detection head 603 located inside the impact detection sealing seat 602.

[0028] It should be noted that when the impact test rod 511 moves into the connecting pipe 6, the air pressure inside the connecting pipe 6 increases, which in turn pushes the impact detection sealing seat 602 to move out of the connecting pipe 6. The impact detection head 603 comes into contact with the workpiece and then moves into the impact detection sealing seat 602. At this time, the pressure generated by the impact is transmitted to the second spring 604. By monitoring the pressure through the second spring 604, the impact force can be monitored in real time, thereby accurately obtaining the test data and ensuring the accuracy of the test.

[0029] Furthermore, the mounting bracket 52 includes a first mounting plate 521, a connecting support plate 522, a mounting ring plate 523, and a connecting flange 524; A connecting support plate 522 is installed on the inner outer circumference of the first mounting plate 521. An mounting ring plate 523 is installed on the end of the connecting support plate 522 relative to the end of the first mounting plate 521. The mounting ring plate 523 is bolted to the bearing seat 2. The connecting support plate 522 is located inside the bearing seat 2. The connecting pipe 6 is bolted to the outside of the mounting ring plate 523. The impact test rod 511 is slidably connected to the first mounting plate 521. The end of the first mounting plate 521 passes through the inside of the mounting ring plate 523 and extends into the connecting pipe 6. The motor support frame 7 is installed in the middle of the outer side of the mounting ring plate 523.

[0030] It should be noted that, under the constraint of the impact test rod 511, the impact test rod 511 can move along a fixed trajectory, thereby conducting a stable impact test. In addition, multiple impact test rods 511 can be installed, so that multiple impact tests can be performed directly according to specific usage requirements during the impact test, thereby improving the efficiency of the impact test.

[0031] Furthermore, the adjustment mechanism 55 includes a linkage rod 554 and an adjustment disc 555; The adjusting disc 555 is slidably inserted into the outside of the adjusting shaft 59 and can rotate synchronously with the adjusting shaft 59. The drive ring 58 and the adjusting disc 555 are connected to the linkage rod 554 at the off-center position of the inner side through a shaft pin.

[0032] It should be noted that the adjusting disc 555 can adjust the distance between itself and the drive ring 58, and the drive ring 58 can be tilted by the linkage rod 554, so as to control the tilt angle of the drive ring 58.

[0033] Furthermore, the adjustment mechanism 55 also includes a drive shaft 551, an external threaded sleeve 552, and a drive wheel 553; The external threaded sleeve 552 is installed in the middle of the transmission wheel 553. The outer side of the adjusting disc 555 is provided with an annular groove 2. The transmission wheel 553 is located in the annular groove 2. The transmission shaft 551 is slidably connected to the external threaded sleeve 552 and can rotate together with the connecting support plate 522. The external threaded sleeve 552 passes through the mounting ring plate 523 and extends into the motor support frame 7, and is threadedly connected to the mounting ring plate 523.

[0034] It should be noted that the external threaded sleeve 552 can rotate under the drive of the drive shaft 551, and then move relative to the mounting ring plate 523, thereby pulling the drive wheel 553 to adjust the position of the adjusting disc 555. When the adjusting disc 555 rotates, the drive wheel 553 can slide relative to it within the annular groove. In addition, a pressure sensor can be installed between the drive shaft 551 and the external threaded sleeve 552 to directly obtain the data after the adjusting disc 555 is adjusted, which facilitates the adjustment of the adjusting disc 555.

[0035] Furthermore, a driven gear 526 is installed on the end of the drive shaft 551 through the external threaded sleeve 552. The driven gear 526 is hinged to the inner side of the motor support frame 7. An internal gear ring 527 is meshed on the outer side of the driven gear 526. A driving gear 525 is meshed on the inner side of the internal gear ring 527. The driving gear 525 is hinged to the inner side of the motor support frame 7. A second servo motor 54 is installed on the outer side of the motor support frame 7. The output shaft of the second servo motor 54 is connected to the driving gear 525.

[0036] It should be noted that the driven gear 526 drives the transmission shaft 551 to rotate. The transmission shaft 551 passes through the mounting ring plate 523, and the diameter of the hole through it is larger than the diameter of the transmission shaft 551. Through the transmission of the internal gear ring 527, all the driven gears 526 can rotate. Under the drive of the output shaft of the second servo motor 54, the driving gear 525 can rotate and drive the internal gear ring 527 to rotate.

[0037] Furthermore, the output shaft of the first servo motor 53 is equipped with a connecting flange 524, which is connected to the end of the adjusting shaft 59 by bolts. The drive ring 58 has a straight groove at its center, and a fixing pin 581 is provided in the straight groove. The linkage shaft 57 is rotatably connected to the part of the fixing pin 581 that is in the straight groove. The fixing pin 581 extends from the side wall of the annular groove into the straight groove and is threadedly connected to the drive ring 58. The test base 1 is equipped with a PLC control terminal, and its first pressure sensor 514, first servo motor 53, second servo motor 54 and second pressure sensor 601 are electrically connected to the PLC control terminal. The placement base 4 includes a placement base 401, a placement groove 402, and a clamping arc-shaped spring piece 403; The top of the placement base 401 is provided with a placement groove 402. A clamping arc-shaped spring piece 403 is installed at the top of the inner side of the placement groove 402. The end of the connecting pipe 6 can be placed in the placement groove 402. When the end of the connecting pipe 6 is placed in the placement groove 402, the clamping arc-shaped spring piece 403 contacts the connecting pipe 6 to lock the position of the connecting pipe 6.

[0038] It should be noted that the first pressure sensor 514 and the second pressure sensor 601 can directly provide feedback on the pressure generated in real time during the impact, so as to obtain the actual force generated by the impact, thereby improving the accuracy of the test data. Furthermore, the PLC control terminal can adaptively adjust the adjustment disk 555 according to the pressure feedback from the first pressure sensor 514 and the second pressure sensor 601 to increase or decrease the impact force, adapting to impact tests of different degrees.

[0039] A test method for a horizontal continuous impact testing device includes the following steps: Step 1: The PLC control terminal controls the first servo motor 53 to maintain a constant output and drives the adjusting shaft 59 and the linkage shaft 57 to rotate, which in turn drives the drive ring 58 to rotate. Driven by the inclined drive ring 58 and the transmission block 56, the impact test rod 51 continuously extends and retracts to perform the impact test. The air pressure in the connecting pipe 6 changes due to the extension and retraction of the impact test rod 51, which in turn drives the impact detection component to perform the impact test. The connecting pipe 6 allows the impact detection component to move freely to perform the test. Step 2: When the first pressure sensor 514 and the second pressure sensor 601 are impacted, the pressure feedback generated by them is used to generate control information by the PLC control terminal and then transmitted to the second servo motor 54. Step 3: The second servo motor 54 drives the drive gear 525 to rotate, and drives the internal gear ring 527 to drive the driven gear 526. Driven by the driven gear 526, the transmission shaft 551 rotates, which in turn drives the external threaded sleeve 552 to rotate. The external threaded sleeve 552 moves relative to the mounting ring plate 523, and drives the adjusting disc 555 to move. Through the linkage of the linkage rod 554, the tilt angle of the drive ring 58 is changed to precisely control the impact force.

[0040] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A horizontal continuous impact testing device, comprising a test base (1), wherein a load-bearing seat (2) and a workpiece assembly seat (3) are mounted on the top of the test base (1), characterized in that: A through mounting bracket (52) is installed in the middle of the bearing seat (2), and an impact test rod (51) facing the workpiece assembly seat (3) is slidably connected on the mounting bracket (52). A transmission block (56) is installed in the middle of the impact test rod (51). A motor support frame (7) is installed on the outside of the mounting frame (52), and a first servo motor (53) is installed on the outside of the motor support frame (7). The output shaft of the first servo motor (53) passes through the mounting frame (52) and is fitted with an adjustment shaft (59). A linkage shaft (57) is installed at the end of the adjustment shaft (59). A drive ring (58) is hinged in the middle of the linkage shaft (57). An annular groove is opened in the middle of the outer side of the drive ring (58). The transmission block (56) is slidably connected in the annular groove. An adjustment mechanism (55) for adjusting the tilt angle of the drive ring (58) is installed in the bearing seat (2).

2. The horizontal continuous impact testing apparatus according to claim 1, characterized in that: A connecting pipe (6) is installed on the outside of the mounting bracket (52), a placement seat (4) is installed on the top of the test base (1), the end of the connecting pipe (6) is placed on the placement seat (4), and an impact detection component that can be slidably connected is slidably connected inside the end of the connecting pipe (6). The end of the impact test rod (51) relative to the workpiece assembly seat (3) is slidably connected to the connecting pipe (6) through the mounting bracket (52) and can be pushed by air pressure to push the impact detection component.

3. The horizontal continuous impact testing apparatus according to claim 2, characterized in that: The impact test rod (51) includes an impact test rod body (511), an impact test head (512), a first spring (513), and a first pressure sensor (514). The transmission block (56) is bolted to the middle of the impact test rod (511). The impact test rod (511) is slidably connected to the end of the workpiece assembly seat (3) with an impact test head (512). The end of the impact test head (512) inside the impact test rod (511) is equipped with a first spring (513), and the end of the first spring (513) is installed inside the end of the impact test rod (511). A first pressure sensor (514) is installed between the end of the impact test head (512) inside the impact test rod (511) and the impact test rod (511).

4. The horizontal continuous impact testing apparatus according to claim 3, characterized in that: The impact detection assembly includes a second pressure sensor (601), an impact detection sealing seat (602), an impact detection head (603), and a second spring (604). The impact detection sealing seat (602) is slidably connected to the inside of the connecting pipe (6). An impact detection head (603) that can extend out of the connecting pipe (6) is slidably connected to the end of the impact detection sealing seat (602). The end of the impact detection head (603) inside the impact detection sealing seat (602) is installed with a second spring (604). One end of the second spring (604) is installed inside the impact detection sealing seat (602). The impact detection head (603) has a second pressure sensor (601) installed at its end inside the impact detection sealing seat (602).

5. The horizontal continuous impact testing apparatus according to claim 4, characterized in that: The mounting bracket (52) includes a first mounting plate (521), a connecting support plate (522), a mounting ring plate (523), and a connecting flange (524); A connecting support plate (522) is installed on the inner outer circumference of the first mounting plate (521). A mounting ring plate (523) is installed on the end of the connecting support plate (522) relative to the first mounting plate (521). The mounting ring plate (523) is installed on the bearing seat (2) by bolts. The connecting support plate (522) is located inside the bearing seat (2). The connecting pipe (6) is installed on the outside of the mounting ring plate (523) by bolts. The impact test rod (511) is slidably connected to the first mounting plate (521). The end of the first mounting plate (521) passes through the inside of the mounting ring plate (523) and extends into the connecting pipe (6). The motor support frame (7) is installed in the middle of the outer side of the mounting ring plate (523).

6. The horizontal continuous impact testing apparatus according to claim 5, characterized in that: The adjustment mechanism (55) includes a linkage rod (554) and an adjustment disc (555); The adjusting disc (555) is slidably inserted into the outside of the adjusting shaft (59) and can rotate synchronously with the adjusting shaft (59). The drive ring (58) and the adjusting disc (555) are connected by a linkage rod (554) at the inner off-center position through a shaft pin.

7. The horizontal continuous impact testing apparatus according to claim 6, characterized in that: The adjustment mechanism (55) also includes a drive shaft (551), an external threaded sleeve (552), and a drive wheel (553); The external threaded sleeve (552) is installed in the middle of the transmission wheel (553). The outer side of the adjusting disc (555) is provided with an annular groove. The transmission wheel (553) is located in the annular groove. The transmission shaft (551) is slidably connected to the external threaded sleeve (552) and can rotate together with the connecting support plate (522). The external threaded sleeve (552) passes through the mounting ring plate (523) and extends into the motor support frame (7), and is threadedly connected to the mounting ring plate (523).

8. The horizontal continuous impact testing apparatus according to claim 7, characterized in that: The driven gear (526) is mounted on the external threaded sleeve (552) extending from the end of the drive shaft (551). The driven gear (526) is hinged to the inner side of the motor support frame (7). The outer side of the driven gear (526) is meshed with an internal gear ring (527). The inner side of the internal gear ring (527) is meshed with a driving gear (525). The driving gear (525) is hinged to the inner side of the motor support frame (7). The outer side of the motor support frame (7) is equipped with a second servo motor (54). The output shaft of the second servo motor (54) is connected to the driving gear (525).

9. The horizontal continuous impact testing apparatus according to claim 8, characterized in that: The output shaft of the first servo motor (53) is equipped with a connecting flange (524), which is connected to the end of the adjusting shaft (59) by bolts; The drive ring (58) has a straight groove at its center, and a fixing pin (581) is provided in the straight groove. The linkage shaft (57) is rotatably connected to the part of the fixing pin (581) that is in the straight groove. The fixing pin (581) extends from the side wall of the annular groove into the straight groove and is threadedly connected to the drive ring (58). The test base (1) is equipped with a PLC control terminal, and its first pressure sensor (514), first servo motor (53), second servo motor (54) and second pressure sensor (601) are electrically connected to the PLC control terminal. The placement base (4) includes a placement base (401), a placement groove (402), and a clamping arc-shaped spring piece (403); The top of the placement base (401) is provided with a placement groove (402). A clamping arc-shaped spring piece (403) is installed on the top of the inner side of the placement groove (402). The end of the connecting pipe (6) can be placed in the placement groove (402). When the end of the connecting pipe (6) is placed in the placement groove (402), the clamping arc-shaped spring piece (403) contacts the connecting pipe (6) to lock the position of the connecting pipe (6).

10. A test method using the horizontal continuous impact testing apparatus of claim 9, characterized in that, Includes the following steps: Step 1: The PLC control terminal controls the first servo motor (53) to output a constant value and drives the adjustment shaft (59) and linkage shaft (57) to rotate, and then drives the drive ring (58) to rotate. Driven by the inclined drive ring (58), the impact test rod (51) is continuously extended and retracted to perform the impact test through the drive block (56). The air pressure in the connecting pipe (6) changes due to the extension and retraction of the impact test rod (51), which in turn drives the impact detection component to perform the impact test. Through the connecting pipe (6), the impact detection component can move freely to perform the test. Step 2: When the first pressure sensor (514) and the second pressure sensor (601) are impacted, the pressure feedback generated by them is used to generate control information by the PLC control terminal and transmit it to the second servo motor (54). Step 3: The second servo motor (54) drives the active gear (525) to rotate and drives the internal gear ring (527) to drive the driven gear (526). Driven by the driven gear (526), ​​the transmission shaft (551) rotates and drives the external threaded sleeve (552) to rotate. The external threaded sleeve (552) moves relative to the mounting ring plate (523) and drives the adjusting disc (555) to move. Through the linkage of the linkage rod (554), the tilt angle of the drive ring (58) is changed to precisely control the impact force.

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