Vertical double-wave impact test bench

Abstract

The invention provides a vertical double-wave impact test bench. Comprising a bottom plate, a supporting table arranged above the bottom plate and provided with an impact window, a moving table top connected to the upper portion of the supporting table, an impact air cylinder arranged on the bottom plate and vertically arranged, a negative wave generator connected with the moving table top and located below the supporting table, and a positive wave generator connected to the impact air cylinder and located below the impact window. The negative wave generator and the supporting table are arranged in a spaced mode, the spacing distance is adjustable, a cylinder body of the speed adjusting air cylinder is connected with the supporting table, the end of an air cylinder rod is connected with the moving table top, and when the impact air cylinder acts, the positive wave generator moves upwards to impact the bottom of the moving table top; the negative wave generator is driven to move upwards to impact the bottom of the supporting table to generate negative pulse waves, so that the positive waveform and the negative waveform do not coincide on a time axis, and the waveforms are ensured to be accurate and reliable; and the force of the next shock wave can be adjusted to meet the test requirements.

Description

Technical Field

[0001] The invention belongs to the technical field of impact testing, and in particular relates to a vertical double-wave impact testing platform. Background Art

[0002] The dual-wave impact test is a test method that simulates the complex stress environment that a product may encounter in actual application, thereby more accurately evaluating the product's safety, reliability, and effectiveness. Its core is to apply two shock waves to the specimen and then measure the deformation, cracks, or other damage of the specimen after the impact. It is generally completed using professional dual-wave impact test equipment.

[0003] The positive and negative wave generators of existing dual-wave impact testing equipment are mostly triggered simultaneously or nearly triggered. For example, Chinese patent CN117740568A discloses such an impact testing machine. The positive and negative waveforms generated by it overlap on the time axis. The vibration generated by the positive / negative wave generator when generating the signal will affect the state of the negative / positive wave generator when receiving the shock wave, resulting in waveform distortion. At the same time, this scheme achieves impact through the same impact of the pendulum. The impact intensity of the positive and negative wave generators cannot be adjusted separately. The test conditions are subject to certain limitations, making it difficult to meet the dual-wave impact test requirements of spacing the positive and negative waveforms on the time axis and adjusting the intensity of the latter shock wave. Summary of the Invention

[0004] The purpose of the present invention is to overcome one or more shortcomings in the prior art and to provide a vertical double-wave impact test bench.

[0005] To achieve the above object, the technical solution adopted by the present invention is that the vertical double-wave impact test bench comprises:

[0006] base plate;

[0007] The support platform is arranged above the bottom plate, and the middle part of the support platform is hollowed out to form a rectangular impact window;

[0008] A moving table top is connected to the supporting platform and is located above the supporting platform so as to be movable up and down;

[0009] Impact cylinder, the impact cylinder is arranged on the bottom plate and is arranged vertically;

[0010] A negative wave generator is connected to the motion table and is located below the support table;

[0011] The positive wave generator is connected to the impact cylinder and is located below the impact window. When the impact cylinder is activated, the positive wave generator moves upward through the impact window and hits the bottom of the moving table, causing the moving table to move upward and generate a positive pulse wave, and drives the negative wave generator to move upward and hit the bottom of the support table to generate a negative pulse wave;

[0012] The negative wave generator is spaced apart from the support platform and the spacing distance is adjustable. The vertical double-wave impact test bench also includes a speed-regulating cylinder arranged between the support platform and the moving table, whose cylinder body is connected to the support platform and whose cylinder rod end is connected to the moving table.

[0013] Preferably, the speed regulating cylinders are symmetrically distributed on at least one opposite side of the impact window.

[0014] Further preferably, a downward extending connecting rod is connected to the moving table surface, and the lower end of the connecting rod passes through the support platform and is connected to the negative wave generator. There are four connecting rods, and these four connecting rods are respectively arranged corresponding to the midpoints of the four sides of the impact window.

[0015] Further preferably, the negative wave generator includes a negative wave corrugated pad and an annular pad sleeved on the lower end of the connecting rod, the upper end of the negative wave corrugated pad is spaced below the support platform, the lower end of the negative wave corrugated pad is supported on the annular pad, and a nut is threadedly connected to the connecting rod to limit the position of the annular pad.

[0016] Further preferably, there are at least two speed regulating cylinders located on the same side of the impact window, and the two speed regulating cylinders are symmetrically distributed along the axis of the connecting rod.

[0017] Preferably, a frame and a top plate are provided between the bottom plate and the support platform, the frame surrounds the outside of the impact cylinder, the top plate and the bottom plate are respectively connected to the top and bottom of the frame, the cylinder body of the impact cylinder passes through the top plate and the bottom plate and is sealed therewith, so that the top plate, the frame and the bottom plate form a closed air storage box for supplying air to the impact cylinder.

[0018] Further preferably, there are multiple impact cylinders and they are symmetrically distributed around the center line of the impact window, and the bottom plate is provided with air vents corresponding to the impact cylinders one by one, and the air vents are connected to the cylinder seat at the bottom of the impact cylinder.

[0019] Further preferably, longitudinal ribs are provided in the frame, the upper and lower ends of the longitudinal ribs are respectively connected to the top plate and the bottom plate, the longitudinal ribs separate adjacent vents, and pressure equalizing holes are also provided on the longitudinal ribs.

[0020] Further preferably, the lower opening of the vent hole is connected to the cylinder seat, and the upper opening of the vent hole is connected to a dust ring, which extends upward and is lower than or flush with the lower edge of the pressure equalizing through hole.

[0021] Further preferably, a vertical air channel and a horizontal air channel that are vertically connected are provided in the cylinder seat, the upper end of the vertical air channel is connected to the air vent, and the free end of the horizontal air channel is connected to the working chamber of the impact cylinder.

[0022] Further preferably, the positive wave generator includes an impact plate connected to the cylinder rod ends of all the impact cylinders and a positive wave waveform pad arranged on the impact plate, the number of the positive wave waveform pads is equal to the impact cylinders, and the positive wave waveform pads are arranged around and close to the center line of the impact window.

[0023] Further preferably, the bottom corners of the support platform are supported on the upper surface of the top plate by support legs, and the four sides of the bottom plate extend outward to form a first skirt extending beyond the frame, and a hanging ring is connected to the first skirt.

[0024] Preferably, the moving table includes a frame and an anvil, the frame is welded from steel plates, the anvil is in the shape of a chamfered plate that gradually shrinks downward, the upper end face of the anvil is welded to the center of the lower surface of the frame, the lower end face of the anvil faces the impact window, the four sides of the frame extend horizontally outward to form a second skirt, and the cylinder rod end of the speed regulating cylinder is connected to the second skirt.

[0025] Further preferably, the corners of the second skirt are also connected to guide rods extending downward, the upper end surface of the support platform is provided with a support block corresponding to the guide rod, the support block is provided with a guide seat mounted on the lower end of the guide rod, and the lower end of the guide rod is also provided with a buffer sleeve, and the buffer sleeve is located above the guide seat.

[0026] Preferably, cubic columns are provided at the bottom corners of the bottom plate, and counterweight blocks are provided between the cubic columns on both sides, and the counterweight blocks are connected to the bottom plate.

[0027] Further preferably, the vertical double-wave impact test bench also includes a buffer unit arranged below the cubic column and the counterweight block, the buffer unit includes an upper support plate, a lower support plate, and a plurality of air spring assemblies arranged between the upper support plate and the lower support plate, the upper support plate is connected to the bottom surface of the cubic column and the counterweight block, and the lower support plate is arranged in parallel and spaced apart below the upper support plate.

[0028] Further preferably, the buffer unit also includes a plurality of hydraulic rod dampers located outside the air spring assembly, the upper end of the hydraulic rod damper is connected to the side wall of the upper support plate, and the lower end of the hydraulic rod damper is connected to the side wall of the lower support plate.

[0029] Preferably, a gas tank for supplying gas to the speed regulating cylinder and a control component for speed regulation are connected below the base plate.

[0030] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art:

[0031] 1. By setting the negative wave generator and the support platform at a distance, after the positive wave generator generates a positive pulse wave, the moving table needs to move upward a distance equal to the distance, so that the negative wave generator hits the support platform to generate a negative pulse wave, which can prevent the positive and negative waveforms from overlapping on the time axis. By adjusting the distance between the negative wave generator and the support platform, the interval length of the positive and negative waveforms on the time axis can also be changed to avoid the impact of vibration, thereby ensuring that the positive and negative waveforms are accurate and reliable.

[0032] 2. By installing a speed-regulating cylinder between the support platform and the moving table, the speed at which the moving table moves upward after generating the positive pulse wave can be adjusted, thereby changing the initial speed at which the negative wave generator impacts the support platform, making the strength of the subsequent shock wave adjustable to meet test requirements. At the same time, adjusting the upward movement speed of the moving table can also change the interval length between the positive and negative waveforms on the time axis. Combined with the adjustment of the above-mentioned interval distance, this interval length can be precisely matched to the test requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a schematic front view of a preferred embodiment of the present invention.

[0034] Figure 2 yes Figure 1 Schematic cross-sectional view in the AA direction.

[0035] Figure 3 yes Figure 1 Schematic cross-sectional view in the BB direction.

[0036] Figure 4 yes Figure 1 Schematic cross-sectional view in the CC direction.

[0037] Figure 5 yes Figure 1 Schematic top view of .

[0038] Figure 6 yes Figure 1 3D schematic diagram of .

[0039] Figure 7 yes Figure 1 Schematic diagram of the top view from below the middle roof.

[0040] Figure 8 yes Figure 7 Schematic cross-sectional view in the DD direction.

[0041] Figure 9 、 Figure 10 yes Figure 7 3D schematic diagram of .

[0042] Wherein: 10. Base plate; 11. Vent hole; 12. Dust seal; 13. First skirt; 14. Lifting ring; 15. Cube column; 16. Counterweight; 20. Support platform; 21. Impact window; 22. Support leg; 23. Support block; 30. Motion table; 31. Connecting rod; 32. Nut; 33. Frame; 34. Anvil; 35. Second skirt; 36. Guide rod; 37. Guide seat; 38. Cushion sleeve; 40. Impact cylinder; 41. Cylinder body; 42. Cylinder seat; 421. Vertical airway 422. Horizontal air duct; 50. Negative wave generator; 51. Negative wave corrugated pad; 52. Annular pad; 60. Positive wave generator; 61. Impact plate; 62. Positive wave corrugated pad; 70. Speed ​​regulating cylinder; 71. Cylinder body; 72. Cylinder rod; 73. Air tank; 74. Control assembly; 81. Frame; 82. Top plate; 83. Longitudinal rib; 84. Pressure equalizing hole; 85. Side cover; 90. Buffer unit; 91. Upper support plate; 92. Lower support plate; 93. Air spring assembly; 94. Hydraulic rod damper. DETAILED DESCRIPTION

[0043] As shown Figures 1 to 10As shown, the vertical double-wave impact test bench provided by the present invention includes: a base plate 10, a support platform 20, a moving table 30, an impact cylinder 40, a negative wave generator 50, a positive wave generator 60, and a speed regulating cylinder 70, wherein: the base plate 10 extends in the horizontal direction; the support platform 20 is arranged above the base plate 10 and has a gap, and the middle part of the support platform 20 is hollowed out to form a rectangular impact window 21; the moving table 30 is connected to the support platform 20 so as to be movable up and down and is located above the support platform 20; the impact cylinder 40 is arranged on the base plate 10 and is vertically arranged; the negative wave generator 50 is connected to the moving table 30 and is located below the support platform 20, and the negative wave generator 50 and the support platform 20 are spaced apart and the spacing distance is adjustable; the positive wave generator 60 is connected to the impact cylinder 40 and is located below the impact window 21; the speed regulating cylinder 70 is provided with a plurality of adjustable speed regulating cylinders. The speed regulating cylinder 70 is arranged between the support platform 20 and the moving table 30. The speed regulating cylinder 70 is used to adjust the speed of the moving table 30 moving upward. The cylinder body 71 of the speed regulating cylinder 70 is connected to the support platform 20, and the upper end of the cylinder rod 72 of the speed regulating cylinder 70 is connected to the moving table 30; the bottom of the base plate 10 is also connected to a gas tank 73 for supplying gas to the speed regulating cylinder 70 and a control component 74 for speed regulation; when the impact cylinder 40 is actuated, the positive wave generator 60 moves upward through the impact window 21 and hits the bottom of the moving table 30, causing the moving table 30 to move upward and generate a positive pulse wave, and drive the negative wave generator 50 to move upward. After the negative wave generator 50 moves upward the distance between the negative wave generator 50 and the support platform 20, the negative wave generator 50 hits the bottom of the support platform 20 to generate a negative pulse wave.

[0044] The benefits of this setting are:

[0045] It can not only prevent the positive and negative waveforms from overlapping on the time axis to avoid the impact of vibration, thereby ensuring that the positive and negative waveforms are accurate and reliable; it can also adjust the strength of the latter shock wave to meet the test requirements; it can also make the interval duration of the positive and negative waveforms on the time axis accurately match the test requirements, with little restriction on test conditions, which can effectively broaden the scope of application of the vertical dual-wave impact test bench.

[0046] In this embodiment, the speed-regulating cylinders 70 are symmetrically distributed on the front and rear sides of the impact window 21. The speed-regulating cylinders 70 are double-acting cylinders. When conducting an impact test, the speed of the moving table 30 moving upward can be adjusted by the speed-regulating cylinders 70. After the impact test, the speed of the moving table 30 moving downward can be changed by the speed-regulating cylinders 70 to achieve a smooth descent of the sample. Furthermore, a downwardly extending connecting rod 31 is connected to the moving table 30. The lower end of the connecting rod 31 passes through the support platform 20 and is connected to the negative wave generator 50. There are four connecting rods 31. These four connecting rods 31 are respectively arranged at the midpoints of the four sides of the impact window 21. There are two speed-regulating cylinders 70 on the front and rear sides of the impact window 21. These two speed-regulating cylinders 70 are symmetrically distributed along the axial center line of the connecting rod 31 corresponding to the side of the impact window 21 where they are located.

[0047] In this embodiment, the negative wave generator 50 includes a negative wave waveform pad 51 and an annular pad 52 which are sleeved on the lower end of the connecting rod 31. The upper end of the negative wave waveform pad 51 is spaced below the support platform 20, and the lower end of the negative wave waveform pad 51 is supported on the annular pad 52. The connecting rod 31 is also threaded with a nut 32 for limiting the position of the annular pad 52 in the up and down directions. Furthermore, the cross-section of the negative wave waveform pad 51 is a spindle-shaped shape with small ends and a large middle, thereby reducing the contact area of ​​the upper and lower ends of the negative wave waveform pad 51 during impact and improving the waveform accuracy and reliability. The diameter of the annular pad 52 is larger than the diameter of the negative wave waveform pad 51 to achieve omnidirectional support.

[0048] In this embodiment, a frame 81 and a top plate 82 are provided between the bottom plate 10 and the support platform 20. The frame 81 surrounds the outside of the impact cylinder 40. The top plate 82 and the bottom plate 10 are sealed to the top and bottom of the frame 81, respectively. The cylinder body 41 of the impact cylinder 40 passes through the top plate 82 and the bottom plate 10 and is sealed therewith, so that the top plate 82, the frame 81, and the bottom plate 10 form a sealed air storage box for supplying air to the impact cylinder 40. A side cover plate 85 is also provided on the outside of the frame 81. The upper and lower ends of the side cover 85 are connected to the top plate 82 and the bottom plate 10 respectively. Furthermore, the bottom corners of the support platform 20 are supported on the upper surface of the top plate 82 by the support legs 22. The four sides of the bottom plate 10 extend outward to form a first skirt 13 that exceeds the frame 81. The first skirt 13 is connected to a hanging ring 14. There are four impact cylinders 40 and they are symmetrically distributed around the center line of the impact window 21. The bottom plate 10 is provided with four vent holes 1 corresponding to the impact cylinders 40. 1, the vent 11 is connected to the cylinder seat 42 at the bottom of the impact cylinder 40, and the cylinder seat 42 is provided with a vertical airway 421 and a horizontal airway 422 that are vertically connected. The upper end of the vertical airway 421 is connected to the vent 11, and the free end of the horizontal airway 422 is connected to the working chamber of the impact cylinder 40. Further, a longitudinal rib 83 is provided in the frame 81, and the upper and lower ends of the longitudinal rib 83 are connected to the top plate 82 and the bottom plate 10 respectively. The longitudinal rib 83 separates the adjacent The vent 11 and the longitudinal rib 83 are also provided with a pressure-equalizing through-hole 84. The lower opening of the vent 11 is connected to the cylinder seat 42, and the upper opening of the vent 11 is connected to a dust ring 12. The dust ring 12 extends upward and is flush with the lower edge of the pressure-equalizing through-hole 84 (in other embodiments, the dust ring 12 may also be lower than the lower edge of the pressure-equalizing through-hole 84); this arrangement can make full use of the space between the support platform and the base plate, making the structure of the lower part of the vertical double-wave impact test bench more compact.

[0049] In this embodiment, the moving table 30 includes a frame 33 and an anvil 34. The frame 33 is made of steel plates that are crisscrossed and welded at the bottom and top. The anvil 34 is in the shape of a chamfered platform that gradually shrinks downward. The upper end face of the anvil 34 is welded to the center of the lower surface of the frame 33. The lower end face of the anvil 34 faces the impact window 21. The four sides of the frame 33 extend horizontally outward to form a second skirt 35. The end of the cylinder rod 72 of the speed regulating cylinder 70 is connected to the second skirt 35. Furthermore, the corners of the second skirt 35 are also connected to guide rods extending downward. 36. The upper end surface of the support platform 20 is provided with a support block 23 corresponding to the guide rod 36. The support block 23 is provided with a guide seat 37 sleeved on the lower end of the guide rod 36. The lower end of the guide rod 36 is also sleeved with a buffer sleeve 38. The buffer sleeve 38 is located above the guide seat 37. The support block 23 and the support platform 20 are both provided with through holes corresponding to the guide rod 36. The support leg 22 is also provided with a cavity for accommodating the lower end of the guide rod 36 to achieve avoidance. This arrangement can make the structure of the upper part of the vertical double-wave impact test platform more compact.

[0050] In this embodiment, the positive wave generator 60 includes an impact plate 61 connected to the cylinder rod ends of all impact cylinders 40 and a positive wave waveform pad 62 arranged on the impact plate 61. The number of the positive wave waveform pads 62 is equal to the impact cylinder 40, which is also four. The positive wave waveform pads 62 are arranged around and close to the center line of the impact window 21.

[0051] In order to reduce the impact of vibration on the supporting surface, in this embodiment, cubic columns 15 are provided at the bottom corners of the base plate 10, and counterweight blocks 16 are provided between the cubic columns 15 on both sides. The counterweight blocks 16 are located on the front and rear sides of the impact window 21, and the counterweight blocks 16 are connected to the base plate 10. Furthermore, the vertical double-wave impact test bench also includes a buffer unit 90 provided below the cubic columns 15 and the counterweight blocks 16. The buffer unit 90 includes a plurality of air spring assemblies 93 connected to the upper support plate 91 and the lower support plate 92, and provided between the upper support plate 91 and the lower support plate 92, as well as a plurality of hydraulic rod dampers 94 located on the outside of the air spring assembly 93. The upper support plate 91 is connected to the bottom surface of the cubic columns 15 and the counterweight blocks 16, and the lower support plate 92 is arranged parallel and spaced below the upper support plate 91. The upper end of the hydraulic rod damper 94 is connected to the outer wall of the upper support plate 91, and the lower end of the hydraulic rod damper 94 is connected to the outer wall of the lower support plate 92.

[0052] The above embodiments are only for illustrating the technical concept and features of the present invention. Their purpose is to enable people familiar with this technology to understand the contents of the present invention and implement them accordingly. They are not intended to limit the scope of protection of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the scope of protection of the present invention.

Claims

1. A vertical double-wave impact test bench comprising: base plate; The support platform is arranged above the bottom plate, and the middle part of the support platform is hollowed out to form a rectangular impact window; A moving table top is connected to the support platform and is located above the support platform so as to be movable up and down; Impact cylinder, the impact cylinder is arranged on the bottom plate and is arranged vertically; A negative wave generator is connected to the motion table and is located below the support table; The positive wave generator is connected to the impact cylinder and is located below the impact window. When the impact cylinder is activated, the positive wave generator moves upward through the impact window and hits the bottom of the moving table, causing the moving table to move upward and generate a positive pulse wave, and drives the negative wave generator to move upward and hit the bottom of the support table to generate a negative pulse wave; Its characteristics are: The negative wave generator is spaced apart from the support platform and the spacing distance is adjustable. The vertical double-wave impact test bench also includes a speed-regulating cylinder arranged between the support platform and the moving table, whose cylinder body is connected to the support platform and whose cylinder rod end is connected to the moving table.

2. The vertical double-wave shock test bench according to claim 1, characterized in that: The speed regulating cylinders are at least symmetrically distributed on one opposite side of the impact window.

3. The vertical double-wave shock test bench according to claim 2, characterized in that: The moving table is connected to a connecting rod extending downward, and the lower end of the connecting rod passes through the support platform and is connected to the negative wave generator. There are four connecting rods, and these four connecting rods are respectively set corresponding to the midpoints of the four sides of the impact window.

4. The vertical double-wave shock test bench according to claim 3, characterized in that: The negative wave generator includes a negative wave waveform pad and an annular pad sleeved on the lower end of the connecting rod. The upper end of the negative wave waveform pad is spaced below the support platform, and the lower end of the negative wave waveform pad is supported on the annular pad. A nut is also threadedly connected to the connecting rod to limit the position of the annular pad.

5. The vertical double-wave shock test bench according to claim 2, characterized in that: There are at least two speed regulating cylinders located on the same side of the impact window, and the two speed regulating cylinders are symmetrically distributed along the axis of the connecting rod.

6. The vertical double-wave shock test bench according to claim 1, characterized in that: A frame and a top plate are provided between the bottom plate and the support platform. The frame surrounds the outside of the impact cylinder. The top plate and the bottom plate are respectively connected to the top and bottom of the frame. The cylinder body of the impact cylinder passes through the top plate and the bottom plate and is sealed therewith, so that the top plate, the frame and the bottom plate form a closed air storage box for supplying air to the impact cylinder.

7. The vertical double-wave shock test bench according to claim 6, characterized in that: There are multiple impact cylinders and they are symmetrically distributed around the center line of the impact window. The bottom plate is provided with air vents corresponding to the impact cylinders one by one, and the air vents are connected to the cylinder seat at the bottom of the impact cylinder.

8. The vertical double-wave shock test bench according to claim 7, characterized in that: A longitudinal rib is provided in the enclosure, and the upper and lower ends of the longitudinal rib are respectively connected to the top plate and the bottom plate. The longitudinal rib separates adjacent vents, and a pressure-equalizing through hole is also provided on the longitudinal rib.

9. The vertical double-wave shock test bench according to claim 8, characterized in that: The lower opening of the vent hole is connected to the cylinder seat, and the upper opening of the vent hole is connected to a dust ring, which extends upward and is lower than or flush with the lower edge of the pressure equalizing through hole.

10. The vertical double-wave shock test bench according to claim 7, characterized in that: A vertical air channel and a horizontal air channel that are vertically connected are provided in the air cylinder seat. The upper end of the vertical air channel is connected to the air vent, and the free end of the horizontal air channel is connected to the working chamber of the impact cylinder.

11. The vertical double-wave shock test bench according to claim 6, characterized in that: The positive wave generator includes an impact plate connected to the ends of the cylinder rods of all the impact cylinders and a positive wave waveform pad arranged on the impact plate. The number of the positive wave waveform pads is equal to the impact cylinders, and the positive wave waveform pads are arranged around and close to the center line of the impact window.

12. The vertical double-wave shock test bench according to claim 6, characterized in that: The bottom corners of the support platform are supported on the upper surface of the top plate through supporting legs. The four sides of the bottom plate extend outward to form a first skirt that exceeds the frame. The first skirt is connected with a hanging ring.

13. The vertical double-wave shock test bench according to claim 1, characterized in that: The moving table includes a frame and an anvil. The frame is welded from steel plates. The anvil is in the shape of a chamfered platform that gradually shrinks downward. The upper end face of the anvil is welded to the center of the lower surface of the frame. The lower end face of the anvil faces the impact window. The four sides of the frame extend horizontally outward to form a second skirt. The cylinder rod end of the speed regulating cylinder is connected to the second skirt.

14. The vertical double-wave shock test bench according to claim 13, characterized in that: The corners of the second skirt are also connected to guide rods extending downward, and the upper end surface of the support platform is provided with a support block corresponding to the guide rod, and the support block is provided with a guide seat sleeved on the lower end of the guide rod, and the lower end of the guide rod is also sleeved with a buffer sleeve, and the buffer sleeve is located above the guide seat.

15. The vertical double-wave shock test bench according to claim 1, characterized in that: Cubic columns are provided at the bottom corners of the bottom plate, and counterweight blocks are provided between the cubic columns on both sides, and the counterweight blocks are connected to the bottom plate.

16. The vertical double-wave shock test bench according to claim 15, characterized in that: The vertical double-wave impact test bench also includes a buffer unit, which includes an upper support plate, a lower support plate, and a plurality of air spring assemblies arranged between the upper support plate and the lower support plate. The upper support plate is connected to the bottom surface of the cubic column and the counterweight block, and the lower support plate is arranged parallel and spaced below the upper support plate.

17. The vertical double-wave shock test bench according to claim 16, characterized in that: The buffer unit further includes a plurality of hydraulic rod dampers located outside the air spring assembly, wherein the upper ends of the hydraulic rod dampers are connected to the side walls of the upper support plate, and the lower ends of the hydraulic rod dampers are connected to the side walls of the lower support plate.

18. The vertical double-wave shock test bench according to claim 1, characterized in that: An air tank for supplying air to the speed regulating cylinder and a control component for speed regulation are connected below the base plate.

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