Adjustable oil buffer

Abstract

The utility model relates to the field of switch cabinets, in particular to an adjustable oil buffer which comprises a buffer cylinder body, a cylinder cover assembly, a piston rod, a reset part and an inner barrel, the buffer cylinder body is provided with a buffer cavity used for containing hydraulic oil, the cylinder cover assembly is connected to the buffer cylinder body and covers a cavity opening of the buffer cavity, the inner barrel is embedded in the buffer cavity, and an oil discharge groove is formed in the bottom of the buffer cavity. The inner cylinder is provided with an oil discharge hole, one end of the piston rod is slidably embedded in the inner side of the inner cylinder, the other end of the piston rod penetrates through the cylinder cover assembly and then extends out of the buffer cavity, and the reset piece is connected between the piston rod and the buffer cylinder and enables the piston rod to have the tendency to be away from the oil discharge groove. When the end, extending out of the buffer cavity, of the piston rod is impacted by the limiting piece, the limiting piece pushes the piston rod to slide, the piston rod extrudes the reset piece, and the piston rod enters the outer side of the inner barrel through the oil discharge groove through hydraulic oil on the inner side of the inner barrel, so that momentum of the limiting piece is absorbed, and the possibility that the limiting piece damages other parts in the device is reduced; and the safety of the device is improved.

Description

Technical Field

[0001] This application relates to the technical field of switchgear, and in particular to an adjustable oil damper. Background Technology

[0002] Chinese utility model patent CN214956482U discloses a one-button sequential control device for a fast grounding mechanism, including a frame. A worm gear is internally mounted on the frame, with teeth on its outer side wall. Bearing seats are fixedly connected to both ends of one side of the bottom inner wall of the frame. A worm gear is positioned between the two bearing seats, with its two ends movably connected to the two bearing seats via bearings. Teeth are also present on the outer side of the middle section of the worm gear. This utility model employs microswitches, installing one microswitch at each of the open and closed positions. The rotation of the output shaft drives the movement of a limit plate, thereby switching the microswitches to achieve the signal output. The microswitches are installed in the same positions as those used for starting and stopping motors, but without electrical connection, meeting the requirements of different sources. The fixed installation positions of the microswitches facilitate future replacement and maintenance, improving the practicality of the device.

[0003] The problem with the aforementioned patent is that the device uses a spring to ensure that the limiting plate rotates to a designated position. During the rotation of the output shaft, the spring is first compressed and then released, which drives the output shaft to rotate and in turn drives the limiting plate to rotate. During the release of the spring, the momentum of the limiting plate is too large, which can easily cause damage to other components in the device. Utility Model Content

[0004] In order to absorb the momentum of the limiting plate, reduce the possibility of the limiting plate causing damage to other components in the device, and improve the safety of the device, this application provides an adjustable oil damper.

[0005] The adjustable oil shock absorber provided in this application adopts the following technical solution:

[0006] An adjustable oil damper includes a damper cylinder body, a cylinder head assembly, a piston rod, a reset member, and an inner cylinder. One end of the damper cylinder body has a damping cavity for containing hydraulic oil. The cylinder head assembly is connected to the damper cylinder body and covers the opening of the damping cavity. The inner cylinder is embedded in the damping cavity, with one end abutting the bottom of the damping cavity and the other end abutting the cylinder head assembly. The bottom of the damping cavity has an oil drain groove, and the side of the inner cylinder away from the oil drain groove has an oil drain hole. The oil drain groove and the oil drain hole connect the inner and outer sides of the inner cylinder. One end of the piston rod is slidably embedded in the inner side of the inner cylinder, with the outer wall of the piston rod fitting against the inner wall of the inner cylinder. The other end of the piston rod extends through the cylinder head assembly and out of the damping cavity. The reset member is connected between the piston rod and the damper cylinder body, causing the piston rod to tend to move away from the oil drain groove.

[0007] By adopting the above technical solution, when the end of the piston rod extending out of the buffer cavity is impacted by the limiting plate, the limiting plate pushes the piston rod to slide, the piston rod squeezes the reset component, and the piston rod enters the outer side of the inner cylinder through the oil discharge groove via the hydraulic oil inside the inner cylinder, thereby absorbing the momentum of the piston rod and thus absorbing the momentum of the limiting plate, reducing the possibility of the limiting plate causing damage to other components in the device and improving the safety of the device.

[0008] Preferably, it also includes a foam sponge board, which is connected to the outside of the inner cylinder. The foam sponge board is provided with a through groove, which connects the inner and outer sides of the foam sponge board. The through groove passes through the foam sponge board along the axis of the inner cylinder and is connected to the oil drain hole.

[0009] By adopting the above technical solution, the foam sponge board is connected to the outside of the inner cylinder to absorb the hydraulic oil in the buffer chamber. The foam sponge board is provided with a through groove, which is connected to the oil drain hole to facilitate the flow of hydraulic oil on both the inner and outer sides of the inner cylinder.

[0010] Preferably, a protrusion is connected to the end of the inner cylinder away from the cylinder head assembly. The protrusion is located on the side of the inner cylinder near the oil drain hole. The protrusion is embedded in the oil drain groove, and the side wall of the protrusion fits against the groove wall of the oil drain groove.

[0011] By adopting the above technical solution, the inner cylinder is connected with a protrusion, which is embedded in the oil drain groove, so that the oil drain groove and the through groove are aligned. The side wall of the protrusion fits into the groove wall, reducing the possibility of the inner cylinder being aligned during use and improving the reliability of the buffer.

[0012] Preferably, the device further includes an adjusting rod. The bottom of the buffer chamber has a rotating hole that communicates with the oil drain groove. One end of the adjusting rod is rotatably embedded inside the inner cylinder, and the outer wall of the adjusting rod is in contact with the inner wall of the inner cylinder. The other end of the adjusting rod extends out of the buffer cylinder body after passing through the rotating hole. A first connecting channel is provided at the end of the adjusting rod near the piston rod. A second connecting channel is provided on the outer wall of the adjusting rod, and the second connecting channel communicates with the first connecting channel. An adjusting groove is provided on the outer wall of the adjusting rod. The adjusting groove is arc-shaped and connects the second connecting channel and the oil drain groove. One end of the adjusting groove is located in the second connecting channel, and the depth of the adjusting groove gradually decreases along its length towards the side furthest from the second connecting channel.

[0013] By adopting the above technical solution, one end of the adjusting rod is rotated and embedded inside the inner cylinder, while the other end extends out of the buffer cylinder body after passing through the rotating hole. The tapered design of the adjusting groove results in different cross-sectional areas of the adjusting groove in different regions, which in turn causes different hydraulic oil flow rates from the adjusting groove into the drain groove per unit time. By rotating the adjusting rod, the operator can align different regions of the adjusting groove with the drain groove, thereby achieving precise control of the hydraulic oil flow rate and adjusting the buffering performance of the buffer to meet the buffering requirements under different working conditions and improve the applicability of the buffer.

[0014] Preferably, it also includes an adjustment disc, which is coaxially connected to the end of the adjustment rod away from the buffer chamber. The buffer cylinder body has a scale line at the end near the adjustment disc, and the scale line is arranged around the adjustment disc.

[0015] By adopting the above technical solution and setting an adjustment disc, rotating the adjustment disc drives the adjustment rod to rotate, and aligning the adjustment disc with the corresponding scale line, the hydraulic oil flow can be precisely adjusted, improving the convenience and accuracy of the buffer adjustment.

[0016] Preferably, the adjusting disc is provided with a positioning hole, which extends through the adjusting disc along its axis and is used for a positioning bolt to be threaded and pressed against the buffer cylinder.

[0017] By adopting the above technical solution, positioning holes are provided on the adjustment plate, and positioning bolts are threaded into the positioning holes and pressed against the buffer cylinder body to fix the adjustment plate, thereby reducing the possibility of the adjustment plate loosening or rotating after adjustment and improving the reliability of the buffer.

[0018] Preferably, the adjusting disc has a plurality of anti-slip blocks evenly distributed around its outer periphery.

[0019] By adopting the above technical solution, several evenly distributed anti-slip blocks are set on the outer periphery of the adjustment disc, which increases the friction between the adjustment and the operator's fingers, reduces the possibility of slippage when the operator rotates the adjustment disc, and improves the convenience of buffer adjustment.

[0020] Preferably, the piston rod is provided with a second annular groove on the outer periphery of one end connected to the adjusting rod, and the adjusting rod is provided with a first annular groove on the outer periphery of one end near the piston rod. The two ends of the reset member are respectively embedded in the first annular groove and the second annular groove.

[0021] By adopting the above technical solution, the two ends of the reset component are respectively embedded in the first annular groove and the second annular groove, which reduces the possibility of the reset component shifting during the process of the piston rod sliding and squeezing the reset component, and improves the reliability of the buffer.

[0022] Preferably, it also includes a first sealing ring and a second sealing ring. The piston rod has a second sealing groove on its outer periphery, and the second sealing ring is embedded in the second sealing groove. The outer wall of the second sealing ring abuts against the inner wall of the inner cylinder. The adjusting rod has a first sealing groove on its outer periphery, and the first sealing ring is embedded in the first sealing groove. The outer wall of the first sealing ring abuts against the inner wall of the inner cylinder.

[0023] By adopting the above technical solution and setting a first sealing ring and a second sealing ring, the possibility of hydraulic oil leakage from the connection between the inner cylinder and the piston rod and the adjusting rod is reduced, the sealing performance between the inner cylinder and the piston rod is improved, the buffering effect of the buffer is guaranteed, and the reliability of the buffer is improved.

[0024] Preferably, it also includes a striker, which is connected to the end of the piston rod away from the bottom of the buffer chamber.

[0025] By adopting the above technical solution, the impact head is connected to the end of the piston rod away from the bottom of the buffer chamber, which prevents external objects from directly impacting the piston rod, reduces the possibility of piston rod damage, and improves the service life of the piston rod.

[0026] In summary, this application includes at least one of the following beneficial technical effects:

[0027] 1. When the end of the piston rod extending out of the buffer chamber is impacted by the limiting plate, the limiting plate pushes the piston rod to slide, the piston rod squeezes the reset component, and the piston rod enters the outer side of the inner cylinder through the oil discharge groove via the hydraulic oil inside the inner cylinder, thereby absorbing the momentum of the piston rod and thus absorbing the momentum of the limiting plate, reducing the possibility of the limiting plate causing damage to other components in the device and improving the safety of the device.

[0028] 2. One end of the adjusting rod rotates and is embedded inside the inner cylinder, while the other end passes through the rotating hole and extends out of the buffer cylinder. The tapered design of the adjusting groove results in different cross-sectional areas of the adjusting groove in different regions, which in turn results in different hydraulic oil flow rates from the adjusting groove into the drain groove per unit time. By rotating the adjusting rod, the operator can align different regions of the adjusting groove with the drain groove, thereby achieving precise control of the hydraulic oil flow rate and adjusting the buffering performance of the buffer to meet the buffering requirements under different working conditions and improve the applicability of the buffer.

[0029] 3. An adjustment disc is installed. By rotating the adjustment disc, the adjustment rod is rotated. By aligning the adjustment disc with the corresponding scale line, the hydraulic oil flow can be precisely adjusted, improving the convenience and accuracy of the buffer adjustment. Attached Figure Description

[0030] Figure 1 This is a cross-sectional view of an adjustable oil damper.

[0031] Figure 2 This is a partial sectional view of an adjustable oil damper, mainly showing the piston rod.

[0032] Figure 3 This is a partial sectional view of an adjustable oil damper, mainly showing the adjusting rod.

[0033] Figure 4 This is a cross-sectional view of the adjusting rod, mainly showing the adjusting groove.

[0034] Figure 5 This is a partial structural diagram of an adjustable oil buffer.

[0035] Explanation of reference numerals in the attached figures:

[0036] 1. Buffer cylinder body; 11. Buffer chamber; 12. Oil drain groove; 13. Second step groove; 14. Rotating hole; 15. First step groove; 16. Protruding ring; 17. Scale line;

[0037] 2. Cylinder head assembly; 21. Cylinder head body; 211. First protrusion; 212. Second protrusion; 2121. Fourth sealing groove; 213. Mounting groove; 214. Third step groove; 215. First connecting hole; 216. Fifth sealing groove; 217. Sixth sealing groove; 22. Inner sleeve; 221. Positioning ring; 222. Limiting block; 223. Second connecting hole; 23. Fifth sealing ring; 24. Sixth sealing ring;

[0038] 3. Inner cylinder; 31. Oil drain hole; 32. Protrusion;

[0039] 4. Foam sponge board; 41. Through groove;

[0040] 5. Piston rod; 51. Second embedded section; 511. Second sealing groove; 512. Second annular groove; 52. Second connecting section; 53. Second fixing section; 531. First slot; 54. Third connecting channel; 55. Third recess; 56. Chamfer; 57. Fifth connecting channel; 58. Fourth connecting channel;

[0041] 6. Impact head; 61. Second recess; 62. Second slot;

[0042] 7. Adjusting rod; 71. First embedded section; 711. First sealing groove; 712. First annular groove; 72. First connecting section; 721. Second connecting channel; 722. Adjusting groove; 73. First fixing section; 731. Third sealing groove; 732. First fixing hole; 74. First connecting channel;

[0043] 8. Adjusting disc; 81. Anti-slip block; 82. First groove; 83. First connecting hole; 84. Positioning hole;

[0044] 91. First sealing ring; 92. Second sealing ring; 93. Third sealing ring; 94. Fourth sealing ring; 95. Snap ring; 96. Connecting bolt; 97. Positioning bolt; 98. Reset component; 99. Steel ball. Detailed Implementation

[0045] The present application will be further described in detail below with reference to the accompanying drawings.

[0046] Reference Figure 1 This application discloses an adjustable oil damper including a damper cylinder 1, a cylinder head assembly 2, and a fourth sealing ring 94. One end of the damper cylinder 1 is coaxially provided with a damping cavity 11, which is used to contain hydraulic oil. The cylinder head assembly 2 includes a cylinder head body 21, which is connected to the damper cylinder 1 and covers the opening of the damping cavity 11. The cylinder head body 21 abuts against one end of the damper cylinder 1. A second stepped groove 13 is coaxially provided on the cavity wall near one end of the cylinder head body 21. A first protrusion 211 is coaxially fixedly connected to the end of the cylinder head body 21 near the damping cavity 11. The first protrusion 211 is embedded in the second stepped groove 13, and its outer wall is in contact with the groove wall of the second stepped groove 13. A second protrusion 212 is coaxially fixedly connected to the end of the first protrusion 211 away from the cylinder head body 21. The second protrusion 212 is embedded in the damping cavity 11, and its outer wall is in contact with the cavity wall of the damping cavity 11. The outer wall of the second protrusion 212 is provided with a fourth sealing groove 2121. The side wall of the fourth sealing groove 2121 near the cylinder head body 21 is flush with the end of the first protrusion 211 away from the cylinder head body 21. The fourth sealing ring 94 is embedded in the fourth sealing groove 2121 and the second stepped groove 13. The inner wall of the fourth sealing ring 94 abuts against the bottom of the fourth sealing groove 2121, and the outer wall of the fourth sealing ring 94 abuts against the bottom of the second stepped groove 13. In this embodiment, the fourth sealing ring 94 is an O-ring.

[0047] An adjustable oil damper also includes an inner cylinder 3 and a foam sponge board 4. The cylinder head assembly 2 also includes an inner sleeve 22. The end of the second protrusion 212 away from the cylinder head body 21 is coaxially provided with a mounting groove 213. The inner sleeve 22 is embedded in the mounting groove 213. The end of the inner sleeve 22 away from the cylinder head body 21 is flush with the end of the second protrusion 212 away from the cylinder head body 21. The groove wall of the mounting groove 213 away from the cylinder head body 21 is provided with a third stepped groove 214. A positioning ring 221 is fixedly connected to the outer wall of the inner sleeve 22. The positioning ring 221 is embedded in the third stepped groove 214. The side surface of the positioning ring 221 near the bottom of the buffer cavity 11 is flush with the end of the inner sleeve 22 near the bottom of the buffer cavity 11. The side surface of the positioning ring 221 away from the bottom of the buffer cavity 11 abuts against the bottom of the third stepped groove 214. The inner cylinder 3 is coaxially embedded in the buffer cavity 11. One end of the inner cylinder 3 abuts against the bottom of the buffer cavity 11, and the other end of the inner cylinder 3 abuts against the end of the inner sleeve 22 away from the cylinder head body 21. The end of the inner sleeve 22 near the bottom of the buffer cavity 11 is coaxially fixedly connected to a limiting block 222. The limiting block 222 is embedded in the inner side of the inner cylinder 3, and the outer wall of the limiting block 222 fits against the inner wall of the inner cylinder 3. The bottom of the buffer cavity 11 is provided with an oil drain groove 12, and the side of the inner cylinder 3 away from the oil drain groove 12 is provided with an oil drain hole 31. The axis of the oil drain hole 31 is perpendicular to the axis of the inner cylinder 3, and the axis of the oil drain hole 31 is coplanar with the axis of the inner cylinder 3. The oil drain groove 12 and the oil drain hole 31 connect the inner and outer sides of the inner cylinder 3. A protrusion 32 is fixedly connected to one end of the inner cylinder 3 near the oil drain groove 12. The protrusion 32 is located on the side of the inner cylinder 3 near the oil drain hole 31 and is embedded in the oil drain groove 12. The side wall of the protrusion 32 is in contact with the groove wall of the oil drain groove 12, and there is a gap between the end of the protrusion 32 away from the inner cylinder 3 and the bottom of the oil drain groove 12. A foam sponge board 4 is coaxially fixedly connected to the outer periphery of the inner cylinder 3. The inner wall of the foam sponge board 4 is in contact with the outer wall of the inner cylinder 3, and there is a gap between the outer wall of the foam sponge board 4 and the wall of the buffer cavity 11. The two ends of the foam sponge board 4 are flush with the two ends of the inner cylinder 3. The foam sponge board 4 is provided with a through groove 41, which connects the inner and outer sides of the foam sponge board 4. The through groove 41 passes through the foam sponge board 4 along the axis of the inner cylinder 3 and connects the oil drain hole 31 and the oil drain groove 12. In this embodiment, the foam sponge board 4 and the inner cylinder 3 are connected by adhesive.

[0048] Reference Figure 1 and Figure 2An adjustable oil buffer also includes a piston rod 5 and a second sealing ring 92. The piston rod 5 includes a second embedding section 51, a second connecting section 52, and a second fixing section 53. The second embedding section 51 is coaxially slidably embedded in the inner side of the inner cylinder 3, and the outer wall of the second embedding section 51 is in contact with the inner wall of the inner cylinder 3. One end of the second embedding section 51 away from the bottom of the buffer cavity 11 is used to abut against the end of the limiting block 222 away from the inner sleeve 22. A second sealing groove 511 is coaxially provided on the outer wall of the second embedding section 51, and the second sealing ring 92 is embedded in the second sealing groove 511. The inner wall of the second sealing ring 92 abuts against the bottom of the second sealing groove 511, and the outer wall of the second sealing ring 92 abuts against the inner wall of the inner cylinder 3. In this embodiment, the second sealing ring 92 adopts an O-ring and a Glyd ring. The inner wall of the O-ring abuts against the bottom of the second sealing groove 511, and the Glyd ring is sleeved on the outer wall of the O-ring. The outer wall of the Glyd ring abuts against the inner wall of the inner cylinder 3.

[0049] Reference Figure 1 and Figure 2An adjustable oil damper also includes a steel ball 99, a striker 6, and a retaining ring 95. The bottom of the mounting groove 213 is coaxially provided with a first connecting hole 215, which passes through the cylinder head body 21 along the axis of the first connecting hole 215. The inner sleeve 22 is coaxially provided with a second connecting hole 223, the wall of the second connecting hole 223 is flush with the wall of the first connecting hole 215. One end of the second connecting section 52 is coaxially fixedly connected to the end of the second embedded section 51 away from the bottom of the buffer cavity 11. The other end of the second connecting section 52 passes through the second connecting hole 223 and the first connecting hole 215 in sequence and then extends out of the cylinder head body 21. The outer wall of the second connecting section 52 is in contact with the walls of the first connecting hole 215 and the second connecting hole 223. The second embedded section 51 has a third connecting channel 54 coaxially at the end away from the second connecting section 52. The inner wall of the third connecting channel 54 near the bottom of the buffer cavity 11 has a third groove 55 coaxially, in which the steel ball 99 is embedded. The end of the third groove 55 away from the bottom of the buffer cavity 11 has a chamfer 56 for the steel ball 99 to abut. The groove wall of the third groove 55 near the bottom of the buffer cavity 11 has a fifth connecting channel 57, which passes through the second embedded section 51. The axis of the fifth connecting channel 57 is perpendicular to the axis of the third connecting channel 54 and is coplanar with the axis of the third connecting channel 54. There are two fifth connecting channels 57, which are symmetrically distributed along their axes. A fourth connecting channel 58 is provided on the outer wall of the second connecting section 52. The fourth connecting channel 58 is located on the side of the second connecting section 52 near the second embedded section 51. The fourth connecting channel 58 is connected to the third connecting channel 54. The axis of the fourth connecting channel 58 is perpendicular to the axis of the third connecting channel 54 and perpendicular to the axis of the fifth connecting channel 57. The axis of the fourth connecting channel 58 and the axis of the third connecting channel 54 are coplanar. The cylinder head assembly 2 also includes a fifth sealing ring 23 and a sixth sealing ring 24. A fifth sealing groove 216 is coaxially provided on the hole wall of the first connecting hole 215 near one end of the mounting groove 213. The fifth sealing ring 23 is embedded in the fifth sealing groove 216. In this embodiment, the fifth sealing ring 23 is a Glyd ring. The outer wall of the fifth sealing ring 23 abuts against the groove wall of the fifth sealing groove 216, and the inner wall of the fifth sealing ring 23 abuts against the outer wall of the second connecting section 52. A sixth sealing groove 217 is coaxially provided on the groove wall of the fifth sealing groove 216 near one end of the mounting groove 213. The sixth sealing ring 24 is embedded in the sixth sealing groove 217. In this embodiment, the sixth sealing ring 24 is a double-lip skeleton oil seal. The outer wall of the sixth sealing ring 24 abuts against the wall of the sixth sealing groove 217, and the inner wall of the sixth sealing ring 24 abuts against the outer wall of the second connecting section 52. The second fixing section 53 is coaxially fixedly connected to the end of the second connecting section 52 away from the second embedded section 51, and the outer wall of the second fixing section 53 is flush with the outer wall of the second connecting section 52.The impact head 6 is coaxially fixed to the end of the second fixed section 53 away from the second connecting section 52. The end of the impact head 6 near the cylinder head body 21 is provided with a second groove 61. The end of the second fixed section 53 away from the second connecting section 52 is embedded in the second groove 61. The outer wall of the second fixed section 53 is in contact with the groove wall of the second groove 61. The outer wall of the second fixed section 53 is provided with a first slot 531. The groove wall of the second groove 61 is provided with a second slot 62. The retaining spring 95 is embedded in the first slot 531 and the second slot 62 to achieve relative fixation of the impact head 6 and the second fixed section 53.

[0050] Reference Figure 1 and Figure 3 An adjustable oil damper further includes an adjusting rod 7, a reset member 98, and a first sealing ring 91. The adjusting rod 7 includes a first embedded section 71, which is coaxially rotatably embedded inside the inner cylinder 3. The outer wall of the first embedded section 71 is in contact with the inner wall of the inner cylinder 3, and one end of the first embedded section 71 abuts against the bottom of the buffer cavity 11. A first sealing groove 711 is coaxially provided on the outer wall of the first embedded section 71, and the first sealing ring 91 is embedded in the first sealing groove 711. The inner wall of the first sealing ring 91 abuts against the bottom of the first sealing groove 711, and the outer wall of the first sealing ring 91 abuts against the inner wall of the inner cylinder 3. In this embodiment, the first sealing ring 91 is an O-ring. The reset member 98 is embedded inside the inner cylinder 3 and is connected between the first embedded section 71 and the second embedded section 51. The reset member 98 causes the impact head 6 to tend to move away from the cylinder head body 21.

[0051] Reference Figure 2 and Figure 3 In this embodiment, the reset member 98 is a spring. The outer periphery of the second embedded section 51 near the first embedded section 71 is provided with a second annular groove 512. One end of the reset member 98 is connected to the bottom of the second annular groove 512. The outer periphery of the first embedded section 71 near the second embedded section 51 is provided with a first annular groove 712. The other end of the reset member 98 is connected to the bottom of the first annular groove 712.

[0052] Reference Figure 3An adjustable oil damper also includes a third sealing ring 93. A rotating hole 14 is coaxially provided at the bottom of the damping cavity 11. A first stepped groove 15 is coaxially provided on the wall of the rotating hole 14 near one end of the damping cavity 11. The first stepped groove 15 is connected to the oil drain groove 12. The adjusting rod 7 also includes a first connecting section 72 and a first fixing section 73. One end of the first connecting section 72 is coaxially fixedly connected to the end of the first embedded section 71 near the rotating hole 14. The first connecting section 72 is embedded in the first stepped groove 15. The outer wall of the first connecting section 72 fits against the groove wall of the first stepped groove 15. One end of the first fixing section 73 is fixedly connected to the end of the first connecting section 72 away from the first embedded section 71. The other end of the first fixing section 73 passes through the rotating hole 14 and extends out of the damper cylinder 1. A third sealing groove 731 is coaxially provided on the outer wall of the first fixed section 73. A third sealing ring 93 is embedded in the third sealing groove 731, with the inner wall of the third sealing ring 93 abutting against the bottom of the third sealing groove 731 and the outer wall of the third sealing ring 93 abutting against the wall of the rotating hole 14. In this embodiment, the third sealing ring 93 is an O-ring.

[0053] Reference Figure 3 and Figure 4 The first embedded section 71 has a first connecting channel 74 coaxially provided at the end away from the first connecting section 72. A second connecting channel 721 is provided on the outer wall of the first connecting section 72, communicating with the first connecting channel 74. The axis of the first connecting channel 74 is perpendicular to the axis of the second connecting channel 721, and the axes of the first connecting channel 74 and the second connecting channel 721 are coplanar. An adjusting groove 722 is provided on the outer wall of the first connecting section 72. The adjusting groove 722 is arc-shaped and communicates with the second connecting channel 721 and the oil drain groove 12. One end of the adjusting groove 722 is located in the second connecting channel 721, and the depth of the adjusting groove 722 gradually decreases along its length towards the side away from the second connecting channel 721.

[0054] Reference Figure 3 and Figure 5An adjustable oil damper also includes an adjusting disc 8, a connecting bolt 96, and a positioning bolt 97. A convex ring 16 is coaxially fixedly connected to one end of the damper cylinder 1 near the rotating hole 14. The adjusting disc 8 is coaxially fixedly connected to one end of the first fixed section 73 away from the first connecting section 72. The end of the adjusting disc 8 near the damper cylinder 1 is in contact with the surface of the convex ring 16 away from the damper cylinder 1. The outer wall of the adjusting disc 8 is flush with the outer wall of the convex ring 16. Several anti-slip blocks 81 are evenly distributed on the outer periphery of the adjusting disc 8. The adjusting disc 8 has a first groove 82 coaxially provided at one end near the buffer cylinder 1. The end of the first fixing section 73 away from the first connecting section 72 is embedded in the first groove 82. The outer wall of the first fixing section 73 has a first fixing hole 732, the axis of which is perpendicular to the axis of the first fixing section 73 and coplanar with the axis of the first fixing section 73. The groove wall of the first groove 82 has a first connecting hole 83, which communicates with the outside. The connecting bolt 96 passes through the first connecting hole 83 and is threadedly connected to the first fixing hole 732. The adjusting disc 8 has a positioning hole 84, which passes through the adjusting disc 8 along its axis and is coplanar with the axis of the first connecting hole 83. The positioning bolt 97 is threaded into the positioning hole 84 and abuts against the surface of the convex ring 16 away from the buffer cylinder 1. The buffer cylinder 1 has a scale line 17 at one end near the convex ring 16, which surrounds the convex ring 16.

[0055] The implementation principle of an adjustable oil buffer according to an embodiment of this application is as follows: During assembly, the first sealing ring 91 is embedded in the first sealing groove 711, the third sealing ring 93 is embedded in the third sealing groove 731, the adjusting rod 7 is embedded in the buffer cavity 11, and the first fixed section 73 extends out of the buffer cylinder 1 after passing through the rotating hole 14. The first fixed section 73 is embedded in the first recess 82, the adjusting plate 8 abuts against the protruding ring 16, and the adjusting plate 8 is rotated so that the first connecting hole 83 corresponds to the first fixed hole 732. The connecting bolt 96 passes through the first connecting hole 83 and is threadedly connected to the first fixed hole 732 to achieve a fixed connection between the adjusting plate 8 and the adjusting rod 7. The foam sponge board 4 is connected to the outer periphery of the inner cylinder 3, and the through groove 41 is connected to the oil drain hole 31. The inner cylinder 3 is embedded in the buffer cavity 11, the inner wall of the inner cylinder 3 is in contact with the outer wall of the first recess 71, and the protrusion 32 is embedded in the oil drain groove 12. The fifth sealing ring 23 is located in the fifth sealing groove 216, the sixth sealing ring 24 is embedded in the sixth sealing groove 217, the inner sleeve 22 is embedded in the mounting groove 213, and the fourth sealing ring 94 is embedded in the fourth sealing groove 2121. The second fixing segment 53 passes through the second connecting hole 223 and the first connecting hole 215 in sequence. The retaining spring 95 is embedded in the first retaining groove 531, and the second fixing segment 53 is embedded in the second insert groove 61. When the first retaining groove 531 and the second retaining groove 62 are aligned, the retaining spring 95 is embedded in the first retaining groove 531 and the second retaining groove 62 to achieve a fixed connection between the impact head 6 and the sliding rod. The second sealing ring 92 is embedded in the second sealing groove 511. The second inserting segment 51 is embedded in the inner side of the inner cylinder 3, and the outer wall of the second inserting segment 51 is in contact with the inner wall of the inner cylinder 3. The second protrusion 212 is embedded in the buffer cavity 11, and the outer wall of the second protrusion 212 is in contact with the cavity wall of the buffer cavity 11. The fourth sealing ring 94 is embedded in the second stepped groove 13, and the first protrusion 211 is embedded in the second stepped groove 13, and the outer wall of the first protrusion 211 is in contact with the groove wall of the second stepped groove 13.

[0056] By rotating the adjusting disc 8, the adjusting rod 7 is rotated, aligning different parts of the adjusting groove 722 with the oil drain groove 12. The positioning bolt 97 is threaded into the positioning hole 84 and abuts against the convex ring 16, thus achieving relative fixation between the adjusting disc 8 and the buffer cylinder 1. In use, when the impact head 6 is subjected to external impact, it slides towards the cylinder head body 21, causing the piston rod 5 to slide. The sliding rod presses against the reset piece 98, and forces the hydraulic oil inside the inner cylinder 3 into the oil drain groove 12 through the first connecting channel 74, the second connecting channel 721, and the adjusting groove 722. The hydraulic oil outside the inner cylinder 3 enters the inner cylinder 3 through the oil drain hole 31, thus buffering the piston rod 5.

[0057] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An adjustable oil damper, characterized in that: The system includes a damper cylinder body (1), a cylinder head assembly (2), a piston rod (5), a reset component (98), and an inner cylinder (3); one end of the damper cylinder body (1) is provided with a damping cavity (11); the damping cavity (11) is used to contain hydraulic oil; the cylinder head assembly (2) is connected to the damper cylinder body (1) and covers the opening of the damping cavity (11); the inner cylinder (3) is embedded in the damping cavity (11); one end of the inner cylinder (3) abuts against the bottom of the damping cavity (11); the other end of the inner cylinder (3) abuts against the cylinder head assembly (2); the bottom of the damping cavity (11) is provided with an oil drain groove (12); the… An oil drain hole (31) is provided on the side of the inner cylinder (3) away from the oil drain groove (12); the oil drain groove (12) and the oil drain hole (31) connect the inner and outer sides of the inner cylinder (3); one end of the piston rod (5) is slidably embedded in the inner side of the inner cylinder (3); the outer wall of the piston rod (5) is in contact with the inner wall of the inner cylinder (3); the other end of the piston rod (5) extends out of the buffer cavity (11) after passing through the cylinder head assembly (2); the reset member (98) is connected between the piston rod (5) and the buffer cylinder (1); the reset member (98) makes the piston rod (5) tend to move away from the oil drain groove (12).

2. The adjustable oil buffer according to claim 1, characterized in that: It also includes a foam sponge board (4); the foam sponge board (4) is connected to the outside of the inner cylinder (3); the foam sponge board (4) is provided with a through groove (41); the through groove (41) connects the inner and outer sides of the foam sponge board (4); the through groove (41) passes through the foam sponge board (4) along the axis of the inner cylinder (3); the through groove (41) is connected to the oil drain hole (31).

3. The adjustable oil buffer according to claim 2, characterized in that: The inner cylinder (3) is connected to a protrusion (32) at one end away from the cylinder head assembly (2); the protrusion (32) is located on the side of the inner cylinder (3) near the oil drain hole (31); the protrusion (32) is embedded in the oil drain groove (12); the side wall of the protrusion (32) is in contact with the groove wall of the oil drain groove (12).

4. The adjustable oil buffer according to claim 1, characterized in that: It also includes an adjusting rod (7); the bottom of the buffer chamber (11) is provided with a rotating hole (14); the rotating hole (14) is connected to the oil drain groove (12); one end of the adjusting rod (7) is rotatably embedded in the inner side of the inner cylinder (3); the outer wall of the adjusting rod (7) is in contact with the inner wall of the inner cylinder (3); the other end of the adjusting rod (7) extends out of the buffer cylinder (1) after passing through the rotating hole (14); the end of the adjusting rod (7) near the piston rod (5) is provided with a first connecting channel (74); the outer wall of the adjusting rod (7) is provided with a second connecting channel. Channel (721); the second connecting channel (721) is connected to the first connecting channel (74); the outer wall of the adjusting rod (7) is provided with an adjusting groove (722); the adjusting groove (722) is arc-shaped; the adjusting groove (722) connects the second connecting channel (721) and the oil drain groove (12); one end of the adjusting groove (722) is located in the second connecting channel (721); the depth of the adjusting groove (722) gradually decreases along the length direction of the adjusting groove (722) towards the side away from the second connecting channel (721).

5. The adjustable oil buffer according to claim 4, characterized in that: It also includes an adjustment disc (8); the adjustment disc (8) is coaxially connected to the end of the adjustment rod (7) away from the buffer chamber (11); the buffer cylinder (1) is provided with a scale line (17) at the end near the adjustment disc (8); the scale line (17) is arranged around the adjustment disc (8).

6. The adjustable oil buffer according to claim 5, characterized in that: The adjusting plate (8) is provided with a positioning hole (84); the positioning hole (84) passes through the adjusting plate (8) along the axis of the adjusting plate (8); the positioning hole (84) is used for the positioning bolt (97) to be threaded and to abut against the buffer cylinder (1).

7. The adjustable oil buffer according to claim 5, characterized in that: The adjusting disc (8) has several anti-slip blocks (81) evenly distributed on its outer periphery.

8. The adjustable oil buffer according to claim 4, characterized in that: The piston rod (5) is provided with a second annular groove (512) on the outer periphery of one end of the adjusting rod (7); the adjusting rod (7) is provided with a first annular groove (712) on the outer periphery of one end of the piston rod (5); the two ends of the reset member (98) are respectively embedded in the first annular groove (712) and the second annular groove (512).

9. The adjustable oil buffer according to claim 4, characterized in that: It also includes a first sealing ring (91) and a second sealing ring (92); the piston rod (5) is provided with a second sealing groove (511) on its outer periphery; the second sealing ring (92) is embedded in the second sealing groove (511); the outer wall of the second sealing ring (92) abuts against the inner wall of the inner cylinder (3); the adjusting rod (7) is provided with a first sealing groove (711) on its outer periphery; the first sealing ring (91) is embedded in the first sealing groove (711); the outer wall of the first sealing ring (91) abuts against the inner wall of the inner cylinder (3).

10. The adjustable oil buffer according to claim 1, characterized in that: It also includes a striker (6); the striker (6) is connected to one end of the piston rod (5) away from the bottom of the buffer chamber (11).

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