A simulation transportation vibration table for detecting impact resistance of a laser level

Abstract

The application discloses a kind of simulated transport vibration table of laser level impact resistance detection, it is related to precision instrument detection technical field, the simulated transport vibration table includes bottom plate, the top middle position of the bottom plate is rotatably installed with top plate, and the top of the top plate is installed with fixed mechanism;Left and right shaking mechanism is installed on the bottom plate.This application can be fixed to laser level by fixed mechanism, then the shaking amplitude of front and rear shaking mechanism can be adjusted by eccentric adjusting mechanism, simultaneously, when front and rear shaking mechanism does not shake forward and backward by eccentric adjusting mechanism, left and right shaking mechanism and front and rear shaking mechanism can be connected by transmission structure, so that left and right shaking mechanism is driven to shake left and right when front and rear shaking mechanism starts, to complete mode conversion under the premise of not changing power, and the same power source is realized through different transmission paths to shake forward and backward and left and right.

Description

Technical Field

[0001] This invention relates to the field of precision instrument testing technology, specifically a simulated transport vibration table for testing the impact resistance of a laser level. Background Technology

[0002] Laser levels are key precision instruments in the fields of measurement and construction. Their anti-shaking and anti-vibration performance directly affects measurement accuracy and service life. Before leaving the factory, they usually need to undergo a running shake test to verify their reliability, in order to simulate the complex vibration environment during transportation and use, and to verify the structural stability and operational reliability of the instrument.

[0003] Existing sway testing equipment for laser levels has significant technical defects. First, the sway amplitude cannot be flexibly adjusted according to the test standards. Most equipment adopts a fixed structure design, and the eccentricity and swing stroke are not adjustable, which cannot meet the testing requirements of different intensities. At the same time, it can only realize sway simulation in a single direction, and generally only has the function of swaying back and forth in a swaying manner. It cannot complete the swaying test from side to side, making it difficult to fully reproduce the complex swaying scenarios of multiple directions and angles in real use. The test coverage is limited and the test results are incomplete. To solve this problem, we disclose a simulated transportation vibration table for testing the impact resistance performance of laser levels. Summary of the Invention

[0004] The purpose of this invention is to provide a simulated transportation vibration table for testing the impact resistance of laser levels, in order to solve the problems raised in the prior art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: the simulated transport vibration table includes a base plate, a top plate is rotatably mounted at the top center of the base plate, and a fixing mechanism is mounted on the top of the top plate; A left-right swaying mechanism is installed on the base plate, and the left-right swaying mechanism is installed in conjunction with the top plate. A limit mechanism is installed on the left-right swaying structure. A support frame is provided below the base plate, and a front-to-back swaying structure is installed inside the support frame. An eccentric adjustment mechanism is installed on the front-to-back swaying structure, and the positions of the front-to-back swaying mechanism and the left-to-right swaying mechanism correspond to each other. A transmission mechanism is installed inside the support frame, and the transmission mechanism is installed in conjunction with a left-right swaying mechanism, a front-back swaying mechanism, and a limiting mechanism. The transmission mechanism includes a telescopic cylinder, a U-shaped rod is fixedly installed at the movable end of the telescopic cylinder, an mounting plate is fixedly installed at the top of the U-shaped rod, a mating shaft is installed at the top of the mounting plate through a first bearing seat assembly, a rectangular transmission block is installed at one end of the mating shaft through a clearance unit, an eccentric column is eccentrically installed at the other end of the mating shaft, a vertical sliding hole is opened at the top of the mounting plate, a vertical sliding column is slidably installed in the vertical sliding hole, a rectangular insert is fixedly installed at the top of the vertical sliding column, a movable frame is fixedly installed on the side of the vertical sliding column, and one end of the eccentric column passes through the movable frame.

[0006] As a preferred technical solution, the front and rear swaying mechanism includes two mounting beams fixedly installed on the inner walls of both sides of the support frame. A lower motor is fixedly installed on the side of one of the mounting beams, and a lower rotating shaft is fixedly installed on the output shaft of the lower motor. Two second bearing assemblies are fixedly installed on the top of each of the two mounting beams. An upper rotating shaft is rotatably installed in the corresponding two second bearing assemblies. Both upper rotating shafts are connected to the lower rotating shaft through a belt unit. Eccentric shafts are provided at both ends of the two upper rotating shafts. A third bearing assembly is installed on each of the four eccentric shafts. The top of each of the four third bearing assemblies is fixedly connected to the bottom of the base plate through a connecting arm.

[0007] As a preferred technical solution, the belt unit includes a timing belt and two timing pulleys, with the two timing pulleys respectively fixedly sleeved on the lower rotating shaft and the upper rotating shaft, and the timing belt sleeved on the two timing pulleys.

[0008] As a preferred technical solution, the eccentric adjustment mechanism includes an upper motor fixedly installed on the top of the mounting beam. An adjustment shaft is fixedly installed on the output shaft of the upper motor. The adjustment shaft has two opposite external threads. An adjustment plate is engaged on both external threads. A distance sensor is fixedly installed on the side of one of the adjustment plates. The detection end of the distance sensor corresponds to the side position of the other adjustment plate. An adjustment unit is installed at both ends of the two adjustment plates.

[0009] As a preferred technical solution, the adjustment unit includes an outer U-shaped plate fixedly installed at the end of the upper rotating shaft, an inner U-shaped plate slidably installed inside the outer U-shaped plate, one end of the eccentric shaft being fixedly connected to the side of the inner U-shaped plate, circular grooves being provided at the end of the upper rotating shaft and the side of the outer U-shaped plate, a movable shaft being slidably installed in the two circular grooves, one end of the movable shaft extending into the inner U-shaped plate and fixedly installed with a pressing shaft, inclined grooves being provided on the top and bottom inner walls of the inner U-shaped plate, and both ends of the pressing shaft extending into the two inclined grooves respectively; Multiple displacement holes are provided on the inner wall of the circular groove on the upper rotating shaft. A displacement rod is slidably installed in each of the multiple displacement holes. The ends of the multiple displacement rods that are close to each other are fixedly installed on the outer side of the moving shaft. The ends of the multiple displacement rods that are far from each other are fixedly installed with a sliding ring that is slidably sleeved on the upper rotating shaft. An annular groove is provided on the outer side of the sliding ring. A rotating ring is rotatably installed in the annular groove. The side of the rotating ring is fixedly connected to the side of the adjusting plate.

[0010] As a preferred technical solution, the left and right swaying mechanism includes a U-shaped rod fixedly installed at the bottom of the base plate, a rotating plate rotatably installed on the U-shaped rod, two swing holes opened on the side of the rotating plate, and a swing rod passing through each of the two swing holes. The top of the base plate has two sets of moving holes symmetrically arranged based on the rotating connection between the base plate and the top plate. A positioning rod is slidably installed in each of the two sets of moving holes. A rotating wheel is rotatably installed at the top of each of the two sets of positioning rods. The top of each of the two sets of rotating wheels contacts the bottom of the top plate. A positioning block is fixedly installed at the bottom of each of the two sets of positioning rods. The two ends of the swing rod are fixedly installed on the sides of the corresponding two positioning blocks that are close to each other. A positioning spring is sleeved on the positioning rod. The two ends of the positioning spring are fixedly installed on the sides of the base plate and the positioning blocks that are close to each other.

[0011] As a preferred technical solution, the limiting mechanism includes alignment holes opened at the ends of two positioning blocks near the lower motor. An L-shaped locking rod is slidably installed in each of the two alignment holes. A slot is opened on the side of each of the two connecting arms near the alignment holes. One end of each of the two L-shaped locking rods is located in the two slots. A return spring is sleeved on the L-shaped locking rod. The two ends of the return spring are fixedly installed on the side of the positioning block and the L-shaped locking rod that are close to each other. The alignment holes correspond to the positions of the rectangular inserts, and the rectangular inserts are adapted to the alignment holes.

[0012] As a preferred technical solution, the avoidance unit includes a rectangular groove opened at the end of the mating shaft away from the moving frame. One end of the avoidance spring is fixedly installed on the inner wall of the rectangular groove. One end of the rectangular transmission block is slidably installed in the rectangular groove and fixedly connected to the other end of the avoidance spring. A rectangular transmission groove is opened at the end of the eccentric shaft near the rectangular transmission block. The rectangular transmission block and the rectangular transmission groove are positioned correspondingly.

[0013] As a preferred technical solution, the side of the support frame is provided with two positioning holes, the two positioning holes are respectively aligned with the positions of two alignment holes, and one end of each of the two rectangular inserts extends into the two positioning holes. The outer U-shaped plate has grooves on its top and bottom inner walls, and sliders are fixedly installed on the top and bottom of the inner U-shaped plate, with the sliders slidably installed in the grooves. The eccentric shaft and the central axis of the upper rotating shaft are at the same horizontal position; The U-shaped rod has two guide holes on one side, which are opened on the side of the mounting beam, and the two ends of the U-shaped rod are slidably installed in the two guide holes respectively; A rotating seat is installed at the top center of the base plate, and the bottom center of the top plate is rotatably mounted on the rotating seat.

[0014] As a preferred technical solution, the fixing mechanism includes two horizontal bars fixedly installed on the top of the top plate, two vertical bars arranged between the two horizontal bars, two U-shaped sliding plates slidably installed on each of the two vertical bars, L-shaped clamping plates fixedly installed on the sides of the four U-shaped sliding plates, and threaded knobs threadedly installed on the sides of the four U-shaped sliding plates. The sides of the four threaded knobs abut against the sides of the vertical bars. Fixing plates are fixedly installed at both ends of the two vertical bars, and fixing holes are opened on the top of the four fixing plates. Multiple threaded grooves are opened on the top of the horizontal bars, and upper threaded knobs are installed in the fixing holes. The end of the upper threaded knob is threaded into one of the threaded grooves.

[0015] Compared with the prior art, the beneficial effects of the present invention are: This application uses a fixing mechanism to fix the laser level, and an eccentric adjustment mechanism to adjust the swaying amplitude of the front and rear swaying mechanism. At the same time, when the front and rear swaying mechanism is not swaying, the eccentric adjustment mechanism allows the left and right swaying mechanism to be connected to the front and rear swaying mechanism through a transmission structure. This allows the front and rear swaying mechanism to drive the left and right swaying mechanism to sway left and right when started, thus achieving mode switching without changing the power source. The same power source achieves front and rear swaying and left and right swaying through different transmission paths.

[0016] In the running-horse-style back-and-forth shaking mode, this device can synchronously and uniformly adjust the shaking amplitude of the four eccentric shafts, adapting to various testing standards and usage scenarios. When the upper motor drives the adjustment shaft to rotate, it can synchronously drive the two adjustment plates to move through the two external threads, and then push the extrusion shaft to move through the rotating ring, sliding ring, displacement rod and other structures. When the extrusion shaft moves, it extrudes the inclined groove of the inner U-shaped plate, so that the four eccentric shafts synchronously deviate from the central axis of the upper rotating shaft, and the eccentricity remains the same and the height is consistent.

[0017] During the back-and-forth sway test, the distance sensor can detect the degree of eccentricity of the eccentric shaft during measurement. Combined with the speed of the lower motor, the test intensity of the back-and-forth sway test can be obtained. Based on this intensity, the speed of the lower motor can be increased or decreased during the left-and-right sway test, thereby matching the intensity of the back-and-forth sway test and the left-and-right sway test.

[0018] After mode switching, this device allows the top plate to swing up and down around the rotating seat, satisfying the motion trajectory requirements of left and right swaying. Before mode switching, the device will keep the eccentric column in the eccentric position of the mating shaft and position the rectangular insert in the corresponding middle position. When switching from the running back and forth swaying mode to the left and right swaying mode, there is still enough vertical movement space after the rectangular insert is inserted into the alignment hole. Driven by the left and right swaying drive structure, the top plate can swing up or down flexibly around the rotating seat, and the motion trajectory is more in line with the real simulation requirements. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the main structure of the present invention; Figure 2 This is a schematic diagram of the internal structure of the support frame of the present invention; Figure 3 This is a schematic diagram of the connection structure between the base plate, the front and rear swaying structure, the limiting mechanism, the eccentric adjustment mechanism and the left and right swaying mechanism of the present invention. Figure 4 This is a schematic diagram of part of the eccentric adjustment mechanism of the present invention; Figure 5 This is a schematic diagram of the eccentric adjustment mechanism and the eccentric shaft and upper rotating shaft of the present invention. Figure 6 This is a schematic diagram of the base plate, top plate, and left-right swaying mechanism of the present invention; Figure 7 This is a schematic diagram of the transmission mechanism and the front-to-back swaying structure of the present invention; Figure 8 This is a schematic diagram of the transmission mechanism structure after the mating shaft of the present invention has been cut open; Figure 9 This is a schematic diagram of part of the transmission mechanism structure of the present invention.

[0020] In the diagram: 1. Support frame; 2. Base plate; 3. Top plate; 4. Longitudinal rod; 5. U-shaped sliding plate; 6. L-shaped clamping plate; 7. Upper threaded knob; 8. Fixing plate; 9. Crossbar; 10. Lower threaded knob; 11. Mounting beam; 12. Upper motor; 13. Positioning hole; 14. U-shaped rod; 15. Telescopic cylinder; 16. Second bearing housing assembly; 17. Upper rotating shaft; 18. Lower motor; 19. Lower rotating shaft; 20. Synchronous pulley; 21. Synchronous belt; 22. Third bearing housing assembly; 23. Eccentric shaft; 24. Connecting arm; 25. Slot; 26. Alignment hole; 27. Return spring; 28. Displacement rod; 29. ​​Sliding ring; 30. Rotating ring 31. Extrusion shaft; 32. Moving shaft; 33. Adjusting plate; 34. External thread; 35. Adjusting shaft; 36. Distance sensor; 37. Outer U-shaped plate; 38. Inner U-shaped plate; 39. Inclined groove; 40. Rotating wheel; 41. Positioning spring; 42. Swing rod; 43. Swing hole; 44. Positioning rod; 45. U-shaped round rod; 46. Rotating plate; 47. L-shaped locking rod; 48. Positioning block; 49. Mounting plate; 50. Rectangular transmission block; 51. Rectangular transmission groove; 52. Avoidance spring; 53. Mating shaft; 54. First bearing seat assembly; 55. Moving frame; 56. Rectangular insert; 57. Vertical sliding column; 58. Eccentric column. Detailed Implementation

[0021] 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.

[0022] Example: Figures 1-9 As shown, the present invention provides a technical solution for a simulated transportation vibration table for testing the impact resistance of a laser level. The simulated transportation vibration table includes a base plate 2, a top plate 3 rotatably mounted at the top center of the base plate 2, and a fixing mechanism mounted on the top of the top plate 3. A left-right swaying mechanism is installed on the base plate 2. The left-right swaying mechanism is installed in conjunction with the top plate 3. A limit mechanism is installed on the left-right swaying structure. A support frame 1 is provided below the base plate 2. A front-to-back swaying structure is installed inside the support frame 1. An eccentric adjustment mechanism is installed on the front-to-back swaying structure. The positions of the front-to-back swaying mechanism and the left-to-right swaying mechanism are corresponding. A transmission mechanism is installed inside the support frame 1. The transmission mechanism is installed in conjunction with the left and right swaying mechanism, the front and back swaying mechanism and the limiting mechanism. With the above structure: the laser level can be fixed by the fixing mechanism, and the swaying amplitude of the front and rear swaying mechanism can be adjusted by the eccentric adjustment mechanism. At the same time, when the front and rear swaying mechanism is not swaying, the transmission structure can connect the left and right swaying mechanism and the front and rear swaying mechanism, so that when the front and rear swaying mechanism is started, it drives the left and right swaying mechanism to sway left and right. Thus, mode switching can be completed without changing the power source. The same power source achieves front and rear swaying and left and right swaying through different transmission paths.

[0023] The transmission mechanism includes a telescopic cylinder 15. A U-shaped rod 14 is fixedly mounted on the movable end of the telescopic cylinder 15. A mounting plate 49 is fixedly mounted on the top of the U-shaped rod 14. A mating shaft 53 is mounted on the top of the mounting plate 49 via a first bearing housing assembly 54. A rectangular transmission block 50 is mounted on one end of the mating shaft 53 via a clearance unit. An eccentric column 58 is eccentrically mounted on the other end of the mating shaft 53. A vertical sliding hole is opened on the top of the mounting plate 49. A vertical sliding column 57 is slidably mounted in the vertical sliding hole. A rectangular insert 56 is fixedly mounted on the top of the vertical sliding column 57. A movable frame 55 is fixedly mounted on the side of the vertical sliding column 57. One end of the eccentric column 58 passes through the movable frame 55. Activating the telescopic cylinder 15 moves the U-shaped rod 14. The movement of the U-shaped rod 14 moves the two mounting plates 49. The movement of the mounting plates 49 moves the rectangular insert 56, the mating shaft 53, and the rectangular transmission block 50, thereby completing the connection between the front-to-back swaying mechanism and the left-to-right swaying mechanism.

[0024] like Figure 2 , Figure 3 and Figure 5As shown, the front-to-back swaying mechanism includes two mounting beams 11 fixedly installed on the inner walls of both sides of the support frame 1. A lower motor 18 is fixedly installed on the side of one of the mounting beams 11, and a lower rotating shaft 19 is fixedly installed on the output shaft of the lower motor 18. Two second bearing housing assemblies 16 are fixedly installed on the top of each of the two mounting beams 11. An upper rotating shaft 17 is rotatably installed in the corresponding two second bearing housing assemblies 16. Both upper rotating shafts 17 are connected to the lower rotating shaft 19 through a belt unit. Eccentric shafts 23 are provided at both ends of the two upper rotating shafts 17. A third bearing housing assembly 22 is installed on each of the four eccentric shafts 23. The top of each of the four third bearing housing assemblies 22 is fixedly connected to the bottom of the base plate 2 through a connecting arm 24. The belt unit includes a synchronous belt 21 and two synchronous pulleys 20. The two synchronous pulleys 20 are fixedly sleeved on the lower rotating shaft 19 and the upper rotating shaft 17, respectively, and the synchronous belt 21 is sleeved on the two synchronous pulleys 20. When the lower motor 18 is started, the output shaft of the lower motor 18 rotates, which drives the lower rotating shaft 19 to rotate. The rotation of the lower rotating shaft 19 drives the two upper rotating shafts 17 to rotate through four synchronous pulleys 20 and two synchronous belts 21. The rotation of the two upper rotating shafts 17 drives the four outer U-shaped plates 37, the four inner U-shaped plates 38 and the four eccentric shafts 23 to rotate. The rotation of the four eccentric shafts 23 causes the four connecting arms 24, the base plate 2, the top plate 3 and the laser level located on the top plate 3 to perform a running horse-style back and forth sway test.

[0025] like Figure 4 and Figure 5 As shown, the adjustment mechanism includes an upper motor 12 fixedly mounted on the top of the mounting beam 11. An adjustment shaft 35 is fixedly mounted on the output shaft of the upper motor 12. The adjustment shaft 35 has two opposing external threads 34, each engaging an adjustment plate 33. A distance sensor 36 is fixedly mounted on the side of one adjustment plate 33, with the detection end of the distance sensor 36 corresponding to the side position of the other adjustment plate 33. Adjustment units are mounted at both ends of both adjustment plates 33. During the back-and-forth sway test, the distance sensor 36 can determine the degree of eccentricity of the eccentric shaft 23 during measurement. Combined with the rotational speed of the lower motor 18, the test intensity of the back-and-forth sway test can be determined. Based on this intensity, the rotational speed of the lower motor 18 can be increased or decreased during the left-and-right sway test, thereby matching the intensity of the back-and-forth sway test and the left-and-right sway test.

[0026] like Figure 4 and Figure 5As shown, the adjustment unit includes an outer U-shaped plate 37 fixedly installed at the end of the upper rotating shaft 17, an inner U-shaped plate 38 slidably installed inside the outer U-shaped plate 37, one end of the eccentric shaft 23 fixedly connected to the side of the inner U-shaped plate 38, and circular grooves provided at the end of the upper rotating shaft 17 and the side of the outer U-shaped plate 37. A movable shaft 32 is slidably installed in the two circular grooves, one end of the movable shaft 32 extends into the inner U-shaped plate 38 and a pressing shaft 31 is fixedly installed therein. Inclined grooves 39 are provided on the top and bottom inner walls of the inner U-shaped plate 38, and the two ends of the pressing shaft 31 are... The extension extends into the two inclined grooves 39; multiple displacement holes are provided on the inner wall of the circular groove on the upper rotating shaft 17, and displacement rods 28 are slidably installed in each of the multiple displacement holes. The ends of the multiple displacement rods 28 that are close to each other are fixedly installed on the outer side of the moving shaft 32, and the ends of the multiple displacement rods 28 that are far from each other are fixedly installed with sliding rings 29 that are slidably sleeved on the upper rotating shaft 17. An annular groove is provided on the outer side of the sliding ring 29, and a rotating ring 30 is rotatably installed in the annular groove. The side of the rotating ring 30 is fixedly connected to the side of the adjusting plate 33. When the upper motor 12 is started, the output shaft of the upper motor 12 rotates, driving the adjusting shaft 35 to rotate. The rotation of the adjusting shaft 35 drives the two adjusting plates 33 to move away from each other through two external threads 34, thereby causing the four rotating rings 30 and the four sliding rings 29 to move. The movement of the sliding rings 29 drives the moving shaft 32 to move through multiple displacement rods 28. The movement of the moving shaft 32 drives the extrusion shaft 31 to move. The movement of the extrusion shaft 31 extrudes the two inclined grooves 39 on the inner U-shaped plate 38, thereby causing the inner U-shaped plate 38 to move. The movement of the inner U-shaped plate 38 drives the eccentric shaft 23 to move. The eccentric shaft 23 is offset from the central axis of the upper rotating shaft 17, and the eccentric shaft 23 becomes eccentric. The eccentricity of the four eccentric shafts 23 is the same and they are located at the same horizontal height. The different eccentricities of the four eccentric shafts 23 can be adjusted as needed.

[0027] like Figure 3 and Figure 6As shown, the left-right swaying mechanism includes a U-shaped rod 45 fixedly installed at the bottom of the base plate 2. A rotating plate 46 is rotatably installed on the U-shaped rod 45. Two swing holes 43 are opened on the side of the rotating plate 46. A swing rod 42 passes through each of the two swing holes 43. Two sets of moving holes are symmetrically arranged at the rotating connection between the base plate 2 and the top plate 3. A positioning rod 44 is slidably installed in each of the two sets of moving holes. A rotating wheel 40 is rotatably installed at the top of each of the two sets of positioning rods 44. The top of each of the two sets of rotating wheels 40 contacts the bottom of the top plate 3. A positioning block 48 is fixedly installed at the bottom of each of the two sets of positioning rods 44. The two ends of the swing rod 42 are fixedly installed on the sides of the corresponding two positioning blocks 48 that are close to each other. A positioning spring 41 is sleeved on the positioning rod 44. The two ends of the positioning spring 41 are fixedly installed on the sides of the base plate 2 and the positioning blocks 48 that are close to each other. Starting the lower motor 18 will cause the two upper rotating shafts 17 and the eccentric shaft 23 to rotate. The rotation of the eccentric shaft 23 will drive the rectangular transmission block 50 and the mating shaft 53 to rotate. The rotation of the mating shaft 53 will drive the eccentric column 58 to rotate. The rotation of the eccentric column 58 will drive the moving frame 55 to move up and down. The movement of the moving frame 55 will drive the vertical sliding column 57 and the rectangular insert 56 to move up and down. Since the rectangular insert 56 is inserted into the alignment hole 26, the positioning block 48 will move up and down. The movement of the positioning block 48 will drive the positioning rod 44 and the rotating wheel 40 to move. At the same time, the movement of the positioning block 48 will drive the swing rod 42 to rotate. The rotation of the swing rod 42 will drive the rotating plate 46 to rotate. The rotation of the rotating plate 46 will drive the swing rod 42 and the positioning block 48 on the other side to move in the opposite direction, so that the top plate 3 can be tested by swaying left and right.

[0028] like Figure 3 and Figure 6 As shown, the limiting mechanism includes alignment holes 26 at the ends of two positioning blocks 48 near the lower motor 18. L-shaped locking rods 47 are slidably installed in both alignment holes 26. The sides of the two connecting arms 24 near the alignment holes 26 are provided with slots 25. One end of the two L-shaped locking rods 47 is located in the two slots 25 respectively. A return spring 27 is sleeved on the L-shaped locking rod 47. The two ends of the return spring 27 are fixedly installed on the sides of the positioning blocks 48 and the L-shaped locking rods 47 that are close to each other. The positions of the alignment holes 26 and the rectangular inserts 56 are corresponding, and the rectangular inserts 56 are adapted to the alignment holes 26. After the measurement is completed, the telescopic cylinder 15 is activated to drive the U-shaped rod 14 to reset, thereby causing the rectangular transmission block 50 to move out of the rectangular transmission groove 51. Under the action of the four positioning springs 41, the four positioning blocks 48 will be in a horizontal state, thereby making the top plate 3 horizontal. At this time, the L-shaped locking rod 47 corresponds to the position of the locking groove 25. Under the action of the reset spring 27, the L-shaped locking rod 47 enters the locking groove 25 to form a fixed position, thereby making the connection between the bottom plate 2 and the top plate 3 stable.

[0029] like Figure 8As shown, the clearance unit includes a rectangular groove at the end of the mating shaft 53 away from the moving frame 55. One end of a clearance spring 52 is fixedly installed on the inner wall of the rectangular groove. One end of a rectangular transmission block 50 is slidably installed in the rectangular groove and fixedly connected to the other end of the clearance spring 52. A rectangular transmission groove 51 is provided at the end of the eccentric shaft 23 near the rectangular transmission block 50, and the rectangular transmission block 50 and the rectangular transmission groove 51 are positioned correspondingly. When the rectangular transmission groove 51 corresponds to the rectangular transmission block 50, the rectangular transmission block 50 can be directly inserted into the rectangular transmission groove 51. When the rectangular transmission block 50 and the rectangular transmission groove 51 do not correspond, the end of the eccentric shaft 23 will squeeze the rectangular transmission block 50 to make it slide into the rectangular groove, and the clearance spring 52 will be compressed. When the eccentric shaft 23 rotates, it will cause the rectangular transmission groove 51 to rotate. When the rectangular transmission groove 51 corresponds to the rectangular transmission block 50, the rectangular transmission block 50 will be inserted into the rectangular transmission groove 51 under the action of the clearance spring 52, thus completing the connection.

[0030] like Figure 2 As shown, the support frame 1 has two positioning holes 13 on its side, which correspond to the positions of the two alignment holes 26. One end of each of the two rectangular inserts 56 extends into the two positioning holes 13. When the U-shaped rod 14 moves, it will cause the rectangular inserts 56 to move out of the alignment holes 26 and into the positioning holes 13, thereby positioning the vertical sliding column 57 so that it can be located at the middle eccentric position at the end of the mating shaft 53. This allows the rectangular inserts 56 to have room to move up and down after being inserted into the alignment holes 26, which facilitates the shaking of the top plate 3.

[0031] like Figure 5 As shown, grooves are provided on the top and bottom inner walls of the outer U-shaped plate 37, and sliders are fixedly installed on the top and bottom of the inner U-shaped plate 38. The sliders are slidably installed in the grooves. By setting the sliders and grooves, the inner U-shaped plate 38 can only slide along the groove direction within the outer U-shaped plate 37.

[0032] The eccentric shaft 23 and the central axis of the upper rotating shaft 17 are at the same horizontal position. The advantage of this setting is that when the upper rotating shaft 17 rotates later, it will not cause the eccentric shaft 23 to move eccentrically, so that the horizontal height of the top plate 3 and the bottom plate 2 will not change.

[0033] Two guide holes are provided on one side of the U-shaped rod 14, which are located on the side of the mounting beam 11. The two ends of the U-shaped rod 14 are slidably installed in the two guide holes respectively. The U-shaped rod 14 can be guided through the guide holes.

[0034] like Figure 6 As shown, a rotating seat is installed at the top center of the base plate 2, and the top plate 3 is rotatably mounted on the rotating seat at the bottom center. The rotating seat is located in the middle, allowing the top plate 3 to swing back and forth around the rotating seat.

[0035] like Figure 1 As shown, the fixing mechanism includes two horizontal bars 9 fixedly installed on the top of the top plate 3. The bottom of the horizontal bars 9 is fixedly connected to the top of the top plate 3 through a support plate. Two vertical bars 4 are arranged between the two horizontal bars 9. Two U-shaped sliding plates 5 are slidably installed on each of the two vertical bars 4. L-shaped clamping plates 6 are fixedly installed on the sides of the four U-shaped sliding plates 5. The sides of the four U-shaped sliding plates 5 are threaded with threaded knobs 10. The sides of the four threaded knobs 10 abut against the sides of the vertical bars 4. Fixing plates 8 are fixedly installed at both ends of the two vertical bars 4. Fixing holes are opened on the top of the four fixing plates 8. Multiple threaded grooves are opened on the top of the horizontal bars 9. Upper threaded knobs 7 are installed in the fixing holes. The end of the upper threaded knob 7 is threaded into one of the threaded grooves. When using it, first place the laser level between the four L-shaped clamps 6. By moving the positions of the two vertical rods 4 and the four U-shaped sliding plates 5, the four L-shaped clamps 6 can limit the four sides of the laser level. Then, fix it with the four lower threaded knobs 10 and the four upper threaded knobs 7.

[0036] Working principle of the invention: The simulated transport vibration table can be connected to an external controller and power supply. The controller can control the lower motor 18, the upper motor 12 and the telescopic cylinder 15, and can also receive signals from the distance sensor 36. When in use, first place the laser level between the four L-shaped clamps 6. By moving the positions of the two vertical rods 4 and the four U-shaped sliding plates 5, the four L-shaped clamps 6 can limit the four sides of the laser level. Then, it can be fixed by the four lower threaded knobs 10 and the four upper threaded knobs 7. If a horse-riding back-and-forth swaying test is required, the upper motor 12 is started. The output shaft of the upper motor 12 rotates, driving the adjusting shaft 35 to rotate. The rotation of the adjusting shaft 35 drives the two adjusting plates 33 to move away from each other through two external threads 34, thereby causing the four rotating rings 30 and the four sliding rings 29 to move. The movement of the sliding rings 29 drives the moving shaft 32 to move through multiple displacement rods 28. The movement of the moving shaft 32 drives the extrusion shaft 31 to move. The movement of the extrusion shaft 31 extrudes the two inclined grooves 39 on the inner U-shaped plate 38, thereby causing the inner U-shaped plate 38 to move. The movement of the inner U-shaped plate 38 drives the eccentric shaft 23 to move. The eccentric shaft 23 is offset from the central axis of the upper rotating shaft 17, and the eccentric shaft 23 becomes eccentric. The eccentricity of the four eccentric shafts 23 is the same and they are located at the same horizontal height. Different eccentricities of the four eccentric shafts 23 can be adjusted as needed. Then, the lower motor 18 is started. The output shaft of the lower motor 18 rotates, which drives the lower rotating shaft 19 to rotate. The rotation of the lower rotating shaft 19 drives the two upper rotating shafts 17 to rotate through four synchronous pulleys 20 and two synchronous belts 21. The rotation of the two upper rotating shafts 17 drives the four outer U-shaped plates 37, four inner U-shaped plates 38 and four eccentric shafts 23 to rotate. The rotation of the four eccentric shafts 23 causes the four connecting arms 24, the base plate 2, the top plate 3 and the laser level on the top plate 3 to perform a running back and forth sway test. At the same time, when the distance between the two adjusting plates 33 changes, the distance sensor 36 can detect the change in distance. When a left-right sway test is required, the upper motor 12 is started to flip its output shaft, thereby restoring the four eccentric shafts 23 to their original positions. The eccentric shafts 23 coincide with the central axis of the upper rotating shaft 17. When the two upper rotating shafts 17 rotate, they will not drive the base plate 2 or the top plate 3 to move. At this time, the alignment hole 26 corresponds to the position of the rectangular insert 56, and the rectangular transmission block 50 corresponds to the position of the rectangular transmission groove 51. The telescopic cylinder 15 is started to drive the U-shaped rod 14 to move. The movement of the U-shaped rod 14 drives the two mounting plates 49 to move. The movement of the mounting plates 49 drives the rectangular insert 56, the mating shaft 53, and the rectangular transmission block 50 to move. When one end of the rectangular insert 56 is inserted into the alignment hole 26, the rectangular insert 56 contacts one end of the L-shaped clamp 47, thereby squeezing the L-shaped clamp. 47. Move it out of the slot 25, the return spring 27 is stretched, and then the other end of the rectangular insert 56 moves out of the positioning hole 13. The rectangular transmission block 50 contacts the end of the eccentric shaft 23. When the rectangular transmission groove 51 corresponds to the rectangular transmission block 50, the rectangular transmission block 50 can be directly inserted into the rectangular transmission groove 51. When the rectangular transmission block 50 does not correspond to the rectangular transmission groove 51, the end of the eccentric shaft 23 will squeeze the rectangular transmission block 50 to slide into the rectangular groove. The avoidance spring 52 is compressed. When the eccentric shaft 23 rotates, it will cause the rectangular transmission groove 51 to rotate. When the rectangular transmission groove 51 corresponds to the rectangular transmission block 50, the rectangular transmission block 50 will be inserted into the rectangular transmission groove 51 under the action of the avoidance spring 52, thus completing the connection. When the motor 18 is started again, the two upper rotating shafts 17 and the eccentric shaft 23 will rotate. The rotation of the eccentric shaft 23 will drive the rectangular transmission block 50 and the mating shaft 53 to rotate. The rotation of the mating shaft 53 will drive the eccentric column 58 to rotate. The rotation of the eccentric column 58 will drive the moving frame 55 to move up and down. The movement of the moving frame 55 will drive the vertical sliding column 57 and the rectangular insert 56 to move up and down. Since the rectangular insert 56 is inserted into the alignment hole 26, the positioning block 48 will move up and down. The movement of the positioning block 48 will drive the positioning rod 44 and the rotating wheel 40 to move. At the same time, the movement of the positioning block 48 will drive the swing rod 42 to rotate. The rotation of the swing rod 42 will drive the rotating plate 46 to rotate. The rotation of the rotating plate 46 will drive the swing rod 42 and the positioning block 48 on the other side to move in opposite directions, so that the top plate 3 can be tested by swaying left and right. When the positioning block 48 moves, the positioning spring 41 will be stretched or compressed. During the back-and-forth sway test, the distance sensor 36 can determine the degree of eccentricity of the eccentric shaft 23 during measurement. Combined with the rotational speed of the lower motor 18, the test intensity of the back-and-forth sway test can be determined. Based on this intensity, the rotational speed of the lower motor 18 can be increased or decreased during the left-and-right sway test, thereby matching the intensity of the back-and-forth sway test and the left-and-right sway test. After measurement, the telescopic cylinder 15 is activated to reset the U-shaped rod 14, causing the rectangular transmission block 50 to move out of the rectangular transmission groove 51. Under the action of the four positioning springs 41, the four positioning blocks 48 are in a horizontal state, thus making the top plate 3 horizontal. At this time, the L-shaped locking rod 47 corresponds to the position of the locking groove 25. Under the action of the reset spring 27, the L-shaped locking rod 47 enters the locking groove 25 to form a fixed position, thus making the connection between the bottom plate 2 and the top plate 3 stable. Then, the movement of the U-shaped rod 14 will drive the rectangular insert 56 to move out of the alignment hole 26 and into the positioning hole 13, thereby positioning the vertical sliding rod 57 so that it can be in the middle eccentric position at the end of the mating shaft 53. This allows the rectangular insert 56 to move upward and downward after it is inserted into the alignment hole 26 next time, making it easier for the top plate 3 to shake.

[0037] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A simulated transport vibration table for testing the impact resistance of a laser level, characterized in that: The simulated transport vibration table includes a base plate (2), a top plate (3) is rotatably installed at the top center of the base plate (2), and a fixing mechanism is installed on the top of the top plate (3); A left-right swaying mechanism is installed on the base plate (2), and the left-right swaying mechanism is installed in conjunction with the top plate (3). A limit mechanism is installed on the left-right swaying structure. A support frame (1) is provided below the base plate (2). A front-to-back swaying structure is installed inside the support frame (1). An eccentric adjustment mechanism is installed on the front-to-back swaying structure. The front-to-back swaying mechanism is positioned in relation to the left-to-right swaying mechanism. A transmission mechanism is installed inside the support frame (1), and the transmission mechanism is installed in conjunction with the left and right swaying mechanism, the front and back swaying mechanism and the limiting mechanism; The transmission mechanism includes a telescopic cylinder (15), a U-shaped rod (14) is fixedly installed on the movable end of the telescopic cylinder (15), an mounting plate (49) is fixedly installed on the top of the U-shaped rod (14), a mating shaft (53) is installed on the top of the mounting plate (49) through a first bearing seat assembly (54), a rectangular transmission block (50) is installed on one end of the mating shaft (53) through a clearance unit, an eccentric column (58) is eccentrically installed on the other end of the mating shaft (53), a vertical sliding hole is opened on the top of the mounting plate (49), a vertical sliding column (57) is slidably installed in the vertical sliding hole, a rectangular insert (56) is fixedly installed on the top of the vertical sliding column (57), a moving frame (55) is fixedly installed on the side of the vertical sliding column (57), and one end of the eccentric column (58) passes through the moving frame (55).

2. The simulated transport vibration table for testing the impact resistance of a laser level according to claim 1, characterized in that: The front and rear swaying mechanism includes two mounting beams (11) fixedly installed on the inner walls of both sides of the support frame (1). A lower motor (18) is fixedly installed on the side of one of the mounting beams (11). A lower rotating shaft (19) is fixedly installed on the output shaft of the lower motor (18). Two second bearing seats (16) are fixedly installed on the top of both mounting beams (11). An upper rotating shaft (17) is rotatably installed in the corresponding two second bearing seats (16). Both upper rotating shafts (17) are connected to the lower rotating shaft (19) through a belt unit. Eccentric shafts (23) are provided at both ends of the two upper rotating shafts (17). A third bearing seat assembly (22) is installed on each of the four eccentric shafts (23). The top of each of the four third bearing seat assemblies (22) is fixedly connected to the bottom of the base plate (2) through a connecting arm (24).

3. The simulated transport vibration table for testing the impact resistance of a laser level according to claim 2, characterized in that: The belt unit includes a timing belt (21) and two timing pulleys (20). The two timing pulleys (20) are fixedly sleeved on the lower rotating shaft (19) and the upper rotating shaft (17), respectively. The timing belt (21) is sleeved on the two timing pulleys (20).

4. The simulated transport vibration table for testing the impact resistance of a laser level according to claim 2, characterized in that: The eccentric adjustment mechanism includes an upper motor (12) fixedly installed on the top of the mounting beam (11). An adjustment shaft (35) is fixedly installed on the output shaft of the upper motor (12). The adjustment shaft (35) has two opposite external threads (34). An adjustment plate (33) is engaged on both external threads (34). A distance sensor (36) is fixedly installed on the side of one of the adjustment plates (33). The detection end of the distance sensor (36) corresponds to the side position of the other adjustment plate (33). An adjustment unit is installed at both ends of the two adjustment plates (33).

5. The simulated transport vibration table for testing the impact resistance of a laser level according to claim 4, characterized in that: The adjustment unit includes an outer U-shaped plate (37) fixedly installed at the end of the upper rotating shaft (17), an inner U-shaped plate (38) slidably installed inside the outer U-shaped plate (37), one end of the eccentric shaft (23) fixedly connected to the side of the inner U-shaped plate (38), and circular grooves are provided at the end of the upper rotating shaft (17) and the side of the outer U-shaped plate (37). A moving shaft (32) is slidably installed in the two circular grooves. One end of the moving shaft (32) extends into the inner U-shaped plate (38) and is fixedly installed with an extrusion shaft (31). Inclined grooves (39) are provided on the inner walls of the top and bottom sides of the inner U-shaped plate (38). Both ends of the extrusion shaft (31) extend into the two inclined grooves (39) respectively. Multiple displacement holes are provided on the inner wall of the circular groove on the upper rotating shaft (17). A displacement rod (28) is slidably installed in each of the multiple displacement holes. The ends of the multiple displacement rods (28) that are close to each other are fixedly installed on the outer side of the moving shaft (32). The ends of the multiple displacement rods (28) that are far apart from each other are fixedly installed with a sliding ring (29) that is slidably sleeved on the upper rotating shaft (17). An annular groove is provided on the outer side of the sliding ring (29). A rotating ring (30) is rotatably installed in the annular groove. The side of the rotating ring (30) is fixedly connected to the side of the adjusting plate (33).

6. The simulated transport vibration table for testing the impact resistance of a laser level according to claim 1, characterized in that: The left and right swaying mechanism includes a U-shaped rod (45) fixedly installed at the bottom of the base plate (2). A rotating plate (46) is rotatably installed on the U-shaped rod (45). Two swing holes (43) are opened on the side of the rotating plate (46). A swing rod (42) passes through each of the two swing holes (43). Two sets of moving holes are symmetrically arranged at the rotating connection between the base plate (2) and the top plate (3) at the top of the base plate (2). A positioning rod (44) is slidably installed in each of the two sets of moving holes. (44) has a rotating wheel (40) rotatably installed at the top. The top of the two sets of rotating wheels (40) contacts the bottom of the top plate (3). The bottom of the two sets of positioning rods (44) is fixedly installed with positioning blocks (48). The two ends of the swing rod (42) are fixedly installed on the sides of the corresponding two positioning blocks (48) that are close to each other. The positioning rod (44) is fitted with a positioning spring (41). The two ends of the positioning spring (41) are fixedly installed on the sides of the bottom plate (2) and the positioning blocks (48) that are close to each other.

7. The simulated transport vibration table for testing the impact resistance of a laser level according to claim 1, characterized in that: The limiting mechanism includes alignment holes (26) at the ends of two positioning blocks (48) near the lower motor (18). L-shaped locking rods (47) are slidably installed in both alignment holes (26). The sides of the two connecting arms (24) near the alignment holes (26) are provided with locking grooves (25). One end of each of the two L-shaped locking rods (47) is located in the two locking grooves (25). A return spring (27) is sleeved on the L-shaped locking rod (47). The two ends of the return spring (27) are fixedly installed on the sides of the positioning blocks (48) and the L-shaped locking rods (47) that are close to each other. The alignment holes (26) correspond to the positions of the rectangular pins (56). The rectangular pins (56) are adapted to the alignment holes (26).

8. The simulated transport vibration table for testing the impact resistance of a laser level according to claim 2, characterized in that: The avoidance unit includes a rectangular groove opened at the end of the mating shaft (53) away from the moving frame (55). One end of the avoidance spring (52) is fixedly installed on the inner wall of the rectangular groove. One end of the rectangular transmission block (50) is slidably installed in the rectangular groove and fixedly connected to the other end of the avoidance spring (52). A rectangular transmission groove (51) is opened at the end of the eccentric shaft (23) near the rectangular transmission block (50). The rectangular transmission block (50) and the rectangular transmission groove (51) are positioned corresponding to each other.

9. The simulated transport vibration table for testing the impact resistance of a laser level according to claim 5, characterized in that: The support frame (1) has two positioning holes (13) on its side. The two positioning holes (13) correspond to the positions of the two alignment holes (26) respectively. One end of the two rectangular inserts (56) extends into the two positioning holes (13) respectively. The outer U-shaped plate (37) has grooves on its top and bottom inner walls, and the inner U-shaped plate (38) has sliders fixedly installed on its top and bottom, which are slidably installed in the grooves. The eccentric shaft (23) and the central axis of the upper rotating shaft (17) are at the same horizontal position; The U-shaped rod (14) has two guide holes on one side of the mounting beam (11), and the two ends of the U-shaped rod (14) are slidably installed in the two guide holes respectively; A rotating seat is installed at the top center of the base plate (2), and the bottom center of the top plate (3) is rotatably mounted on the rotating seat.

10. The simulated transport vibration table for testing the impact resistance of a laser level according to claim 1, characterized in that: The fixing mechanism includes two horizontal bars (9) fixedly installed on the top of the top plate (3), two vertical bars (4) are arranged between the two horizontal bars (9), two U-shaped sliding plates (5) are slidably installed on the two vertical bars (4), L-shaped clamping plates (6) are fixedly installed on the sides of the four U-shaped sliding plates (5), and threaded knobs (10) are threadedly installed on the sides of the four U-shaped sliding plates (5). The sides of the four threaded knobs (10) abut against the sides of the vertical bars (4). Fixing plates (8) are fixedly installed at both ends of the two vertical bars (4). Fixing holes are opened on the top of the four fixing plates (8). Multiple threaded grooves are opened on the top of the horizontal bars (9). An upper threaded knob (7) is installed in the fixing hole. The end of the upper threaded knob (7) is threadedly installed in one of the threaded grooves.

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