Shock-resistant single-rod shear thickening damper

Abstract

The invention discloses an anti-impact single-rod shear thickening damper, and relates to the field of dampers. The piston is connected in the cylinder barrel in a sliding manner and is provided with a plurality of damping holes; one end of the piston rod is connected with the piston, and the other end of the piston rod penetrates through the cylinder barrel and extends out of the cylinder barrel; the baffle disc is rotationally connected to the piston and used for opening and closing the damping holes, and communicating holes which are used for communicating the damping holes and have the same number as the damping holes are formed in the baffle disc. According to the damper, the baffle disc is rotated by an operator to shield or open the damping hole, so that the flowing sectional area of damping liquid is changed, the damping force of the damping liquid is changed, and the damping requirements of the damper under different load conditions are met.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of dampers, in particular to an anti-impact single-out-rod shear thickening damper. BACKGROUND

[0002] The anti-impact shear thickening damper is a variable-damping controller with excellent performance. The damper is filled with an intelligent material, shear thickening fluid (STF). By using the unique passive control and self-adaptive damping variation characteristics of the shear thickening fluid (STF), the anti-impact shear thickening damper overcomes the single output characteristic of traditional viscous dampers and the structural complexity of active control variable damping devices (electrical / magnetic rheological fluid dampers, etc.), and provides a new way for the simplification of intelligent vibration control.

[0003] At present, the traditional damper usually has a fixed size of damping hole on the piston, and the damping fluid generates damping force through the damping hole. Different load conditions usually require different damping effects, but the damping force of the traditional damper is usually constant, which is difficult to meet the damping needs of different load conditions. SUMMARY

[0004] In view of the above deficiencies of the related art, the present application provides an anti-impact single-out-rod shear thickening damper.

[0005] The anti-impact single-out-rod shear thickening damper provided by the present application adopts the following technical solution: An anti-impact single-out-rod shear thickening damper, comprising: a cylinder; a piston slidably connected in the cylinder and having a plurality of damping holes; a piston rod connected to one end of the piston and extending out of the cylinder through the cylinder; a baffle disc rotatably connected to the piston for opening and closing the damping holes, and having a plurality of communication holes corresponding to the damping holes.

[0006] By rotating the baffle disc, the operator can shield or open the damping holes. When the communication holes are opposite to the damping holes, the damping holes are communicated, the number of communicated damping holes is adjusted, the cross-sectional area of the damping fluid flow is changed, the damping force of the damping fluid is changed, and the damping needs of different load conditions are met.

[0007] Preferably, the damping holes are arranged in groups to form a plurality of hole groups, and the hole groups are distributed on the piston along the movement track direction of the baffle disc, and each hole group includes at least one damping hole.

[0008] By adopting the technical scheme, the movement track of the communication hole is arc-shaped, the hole groups are distributed on the piston in an arc shape, that is, the baffle disc gradually opens the hole groups in the movement process, rather than covering or opening all the hole groups at the same time, thereby improving the diversity of the baffle disc adjustment.

[0009] Preferably, a rotating groove is coaxially arranged in the middle position of the piston, and the baffle disc is rotatably connected in the rotating groove.

[0010] By adopting the technical scheme, the baffle disc is located in the middle position of the piston, and the two sides of the baffle disc are clamped and protected by the piston in the movement process, and are not subjected to the pressure of the damping liquid, thereby protecting the baffle disc to facilitate the rotation of the baffle disc.

[0011] Preferably, an adjusting opening is arranged in the side wall of the cylinder barrel, an adjusting seat is fixed on the outer wall of the cylinder barrel at the adjusting opening, and an adjusting gear for driving the baffle disc to rotate is rotatably connected in the adjusting seat.

[0012] By adopting the technical scheme, the operator rotates the adjusting gear, the adjusting gear drives the baffle disc to rotate, and the opening and closing of the damping hole are adjusted and controlled.

[0013] Preferably, an adjusting rod is coaxially connected to the adjusting gear, an adjusting groove is arranged in the upper end of the adjusting seat along the radial direction of the cylinder barrel, the upper end of the adjusting rod is arranged to pass out of and be slidingly connected in the adjusting groove, a soft rubber sheet is sealed in the adjusting groove, a through hole is arranged in the rubber sheet, the adjusting rod is sealingly arranged in the through hole, when the adjusting rod is located at one end of the adjusting groove close to the cylinder barrel, the end of the adjusting gear extends into the cylinder barrel from the adjusting opening, and when the adjusting rod is located at one end of the adjusting groove away from the cylinder barrel, the end of the adjusting gear is retracted in the adjusting seat.

[0014] By adopting the technical scheme, when the operator needs to adjust the damping force, the piston is first moved to the adjusting opening, and the baffle disc is opposite to the adjusting opening. The operator pushes the adjusting rod towards the cylinder barrel, the adjusting rod drives the adjusting gear to extend into the cylinder barrel from the adjusting opening and to be in meshing contact with the baffle disc, the operator rotates the adjusting rod to drive the adjusting gear to rotate, thereby driving the baffle disc to rotate and controlling the opening and closing of the damping hole. After the adjustment is completed, the operator pushes the adjusting rod away from the cylinder barrel, so that the adjusting gear slides out of the adjusting opening and is separated from the baffle disc, and the adjusting gear is completely retracted in the adjusting seat.

[0015] Preferably, a plurality of locking holes are arranged on the adjusting rod in the circumferential direction, and a locking rod is fixed at one end of the adjusting groove away from the cylinder barrel and is directed towards the adjusting rod and cooperates with the locking hole.

[0016] By adopting the technical scheme, after the adjusting rod drives the adjusting gear to separate from the baffle disc, the adjusting rod is located at the end of the adjusting groove far from the cylinder, at this time, the locking rod is inserted into the locking hole to prevent the adjusting rod from rotating by itself, the angle of the adjusting gear is changed, and the meshing of the adjusting gear and the baffle disc in the next time is affected.

[0017] As preferred, an inner recess feedback groove is arranged at one end of the adjusting groove close to the cylinder, a feedback bead pointing to the adjusting rod is slidably connected in the feedback groove, the feedback bead and the feedback groove are connected through a feedback spring, a plurality of embedding grooves matched with the feedback bead are arranged on the adjusting rod, the feedback bead is located in different embedding grooves, and the communication hole guides different numbers of hole groups.

[0018] By adopting the technical scheme, when the adjusting gear meshes with the baffle disc, the operator rotates the adjusting rod, the adjusting gear drives the baffle disc to rotate, the communication hole gradually guides the hole groups, when the communication hole completely guides one hole group, the feedback bead is embedded in one feedback groove. When the feedback bead is embedded in one feedback groove, the operator rotates the adjusting rod, and the embedding of the feedback bead gives an operator a feedback signal to facilitate the feedback personnel to know the current adjustment. When it is needed to continue to adjust, the operator increases the torque to continue to rotate the adjusting rod, at this time, the feedback bead is extruded, the feedback bead extrudes the feedback spring, and the feedback bead is extruded from the feedback groove until the feedback bead is extruded from the feedback groove and is in contact with the outer surface of the adjusting rod. With the rotation of the adjusting rod, the feedback bead is embedded in the next feedback groove. The operator judges the guidance of the communication hole to the damping hole through the feedback feeling of the feedback bead, so that corresponding adjustment is performed, and the use is more convenient.

[0019] As preferred, the embedding grooves are arranged in sequence from deep to shallow, the feedback bead is located in the embedding groove with deeper depth, and the communication hole guides more hole groups.

[0020] By adopting the technical scheme, when the operator rotates the adjusting rod to adjust the damping force, the more the number of hole groups guided by the communication hole, the deeper the embedding groove in which the feedback bead is embedded, and the more force the operator needs to rotate the adjusting rod. The operator can judge the size of the current damping force through the force of the current operation of the rotating rod, and the use is convenient.

[0021] As preferred, the outer wall of the cylinder is slidingly connected with a baffle door parallel to the movement direction of the piston rod at the adjusting port, the inner wall of the adjusting port is fixed with a downward extending protrusion at the upper end, the baffle door is fixed with a positioning plate slidingly connected in the adjusting port, the length of the positioning plate is not greater than the thickness of the cylinder, the positioning plate is provided with a positioning hole facing the inner wall of the cylinder, a positioning block is slidingly connected in the positioning hole, a positioning spring is arranged between the positioning block and the bottom of the positioning hole, the side of the positioning block away from the positioning spring is connected with a limiting block capable of extending out of the positioning hole through a limiting spring, when the positioning spring and the limiting spring are in the natural state, the limiting block is retracted in the positioning hole, the positioning plate is provided with a positioning slot opposite to the protrusion, when the positioning spring is in the natural state, the end of the positioning block away from the limiting block is located in the positioning slot, the side wall of the piston is provided with a limiting slot above the baffle plate matched with the limiting block.

[0022] By adopting the above technical scheme, when the cylinder is normally used for damping buffering, the baffle door slides down to shield the adjusting port, thereby separating the adjusting seat and the cylinder. At this time, the positioning spring and the limiting spring are in the natural state, the limiting block is retracted in the positioning hole and does not extend out of the positioning plate. Moreover, the length of the positioning plate is less than the thickness of the cylinder, that is, the positioning plate is completely located in the adjusting port and does not extend into the inner wall of the cylinder, thereby ensuring the normal use of the cylinder. When it is necessary to adjust the damping force, the baffle door slides up to open the adjusting port, thereby connecting the adjusting seat and the inside of the cylinder. When the baffle door slides to the top, the protrusion is inserted into the positioning slot, the protrusion extrudes the positioning block, the positioning spring is elongated, the positioning block pushes the limiting spring and the limiting block to extend out, and the limiting block extends out of the positioning hole and is located in the inside of the cylinder. The operator adjusts the position of the piston, the outer wall of the piston extrudes the limiting block when sliding through the limiting block, the positioning block is limited from sliding by the protrusion, and the limiting block compresses the limiting spring. Until the limiting slot is opposite to the limiting block, at this time, the limiting block is inserted into the limiting slot under the action of the limiting spring, at this time, the piston is located at the adjusting port, and the baffle plate is opposite to the adjusting port, thereby facilitating the operator to drive and adjust the baffle plate through the adjusting rod. After the adjustment is completed, the operator resets the adjusting rod and pushes the baffle door downward to extrude the limiting block out of the limiting slot, and the protrusion is separated from the positioning plate. The piston is unlocked and can slide again.

[0023] As preferred, the inside of the cylinder is separated into a rod cavity with the piston rod and a rodless cavity without the piston rod by the piston, a compensation rod is fixed in the rodless cavity and coaxially arranged with the piston, the center of the piston coaxial with the piston rod is provided with a compensation cavity opposite to the compensation rod, the compensation rod is slidingly connected in the compensation cavity, and the piston rod is a variable diameter rod and is provided with an exhaust hole communicating with the compensation cavity in the center.

[0024] By adopting the technical scheme, when the piston moves towards the rod cavity, the volume in the rod cavity is extruded, and the damping liquid in the rod cavity moves towards the rodless cavity through the damping hole. Since the piston rod in the rod cavity occupies part of the volume, in order to make the volume changes of the rod cavity and the rodless cavity equal during the movement of the piston, the compensation rod is added in the rodless cavity, so as to adjust the volume in the rodless cavity, and ensure that the volume changes in the rod cavity and the rodless cavity are equal during the movement of the piston, thereby facilitating the flow of the damping liquid.

[0025] In summary, the present application has at least one of the following beneficial technical effects: By arranging the baffle disc and the adjusting seat, the operator can drive the baffle disc to rotate through the adjusting rod, thereby adjusting the opening number of the damping hole, changing the sectional area of the damping liquid flow, and changing the damping force, so as to meet the damping demand under different loads. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is a schematic diagram of the overall structure of example one; Figure 2 is a schematic diagram of the structure of the baffle disc in example one; Figure 3 is a schematic diagram of the structure of the baffle disc in example one; Figure 1 is an enlarged schematic diagram of part A in example one; Figure 4 is a schematic diagram of the connection between the adjusting seat and the cylinder barrel in example two; Figure 5 is an enlarged schematic diagram of part B in example two; Figure 4 Figure 6 is a schematic diagram of the structure of the adjusting rod in example two.

[0027] The drawings show: 1, cylinder barrel; 11, adjusting port; 12, protruding block; 13, rod cavity; 14, rodless cavity; 2, piston; 21, piston rod; 22, damping hole; 23, rotating groove; 24, limiting groove; 25, compensation cavity; 3, baffle disc; 31, communication hole; 4, adjusting seat; 41, adjusting groove; 42, locking rod; 43, feedback groove; 44, feedback bead; 45, feedback spring; 5, adjusting rod; 51, adjusting gear; 52, rubber sheet; 53, locking hole; 54, fitting groove; 55, indicating plate; 56, pointer; 6, baffle door; 61, positioning plate; 62, positioning hole; 63, positioning block; 64, positioning spring; 65, limiting spring; 66, limiting block; 67, positioning groove; 7, compensation rod. DETAILED DESCRIPTION

[0028] The present application will be further described in detail below in combination with examples and drawings.

[0029] Example one ​The embodiment of the present application discloses an impact-resistant single-out-rod shear thickening damper, referring to Figure 1 , comprising a cylinder 1. A piston 2 is slidably connected in the cylinder 1, a piston rod 21 is coaxially fixed at the center of the piston 2, the piston rod 21 penetrates out of the end of the cylinder 1, and the inside of the cylinder 1 is divided into a rod cavity 13 with the piston rod 21 and a rodless cavity 14 without the piston rod 21 by the piston 2. A plurality of damping holes 22 are formed in the piston 2.

[0030] Referring to Figure 1 , a compensation rod 7 is fixed in the rodless cavity 14 and coaxially arranged with the piston 2 in the cylinder 1, a compensation cavity 25 opposite to the compensation rod 7 is coaxially formed at the center of the piston 2 and the piston rod 21, the compensation rod 7 is slidably connected in the compensation cavity 25, the piston rod 21 is a variable-diameter rod and an exhaust hole is formed in the center of the piston rod 21 and communicates with the compensation cavity 25. When the piston 2 moves towards the rod cavity 13, the volume in the rod cavity 13 is extruded, and the damping liquid in the rod cavity 13 moves towards the rodless cavity 14 through the damping hole 22. Since the piston rod 21 occupies part of the volume in the rod cavity 13, in order to make the volume changes of the rod cavity 13 and the rodless cavity 14 equal during the movement of the piston 2, the compensation rod 7 is added in the rodless cavity 14, so that the volume in the rodless cavity 14 is adjusted, and the volume changes in the rodless cavity 14 and the rod cavity 13 are kept the same during the movement of the piston 2, thereby facilitating the flow of the damping liquid.

[0031] Referring to Figure 1 , Figure 2 and Figure 3 , a plurality of hole groups are arranged at intervals on the piston 2, and at least one damping hole 22 is arranged in each hole group. In the embodiment, three hole groups are arranged, and each hole group has four damping holes 22. A ring-shaped concave rotating groove 23 is coaxially formed at the middle position of the piston 2, a baffle disc 3 is rotatably connected in the rotating groove 23, and a plurality of communication holes 31 are formed in the baffle disc 3 and have the same number and distribution position as the damping holes 22. The hole groups are distributed on the piston 2 along the movement track direction of the communication holes 31. In the initial position, all the communication holes 31 are opposite to all the damping holes 22, and all the damping holes 22 are in the open state, so that the flow area of the damping liquid is maximum and the damping force is minimum.

[0032] Referring to Figure 1 and Figure 2 , when the baffle disc 3 rotates, the communication holes 31 gradually deviate from the damping holes. One of the hole groups is staggered and blocked, so that the number of the open damping holes 22 is reduced and the damping force is increased.

[0033] Referring to Figure 1 and Figure 2, the side wall of the cylinder 1 is provided with an adjusting opening 11, and the outer wall of the cylinder 1 is fixed with an adjusting seat 4 located at the adjusting opening 11. The adjusting seat 4 is rotatably connected with an adjusting gear 51 for driving the rotation of the baffle disc 3. The outer wall of the baffle disc 3 is provided with a tooth groove meshing with the adjusting gear 51. The operator drives the adjusting gear 51 to drive the rotation of the baffle disc 3, so as to adjust the damping force.

[0034] Referring to Figures 1 to 3 , the upper end of the adjusting seat 4 is provided with a strip-shaped adjusting groove 41, and the adjusting groove 41 is provided along the radial direction of the cylinder 1. The upper end of the adjusting gear 51 is coaxially fixed with an adjusting rod 5 penetrating out of the adjusting groove 41. The adjusting rod 5 slides in the adjusting groove 41. When the adjusting rod 5 is located at one end of the adjusting groove 41 close to the cylinder 1, the end of the adjusting gear 51 extends into the cylinder 1 from the adjusting opening 11; when the adjusting rod 5 is located at one end of the adjusting groove 41 away from the cylinder 1, the end of the adjusting gear 51 is retracted in the adjusting seat 4. When the damping force needs to be adjusted, the operator moves the adjusting rod 5 to the end of the adjusting groove 41 close to the cylinder 1, the adjusting gear 51 extends into the cylinder 1 from the adjusting opening 11 and meshes with the baffle disc 3, and the operator rotates the adjusting rod 5 to drive the rotation of the baffle disc 3. When the damping force adjustment is completed, the operator moves the adjusting rod 5 to the end of the adjusting groove 41 away from the cylinder 1, the adjusting gear 51 slides out of the adjusting opening 11 and separates from the baffle disc 3, so as to ensure the normal use of the cylinder 1.

[0035] Referring to Figures 1 to 3 , the adjusting seat is provided with a soft rubber sheet 52 for plugging the adjusting groove 41, and the rubber sheet 52 is provided with a through hole, and the adjusting rod 5 penetrates in the through hole. During the sliding and rotating process of the adjusting rod 5, the rubber sheet 52 always plugs the adjusting groove 41 to prevent the leakage of damping liquid.

[0036] Referring to Figure 3 , the adjusting rod 5 is rotatably connected with an indicating plate 55 located above the adjusting seat 4, and the indicating plate 55 is slidably connected with the adjusting seat 4. The indicating plate 55 is provided with a plurality of adjusting gears, and the side wall of the adjusting rod 5 is fixed with a pointer 56 for indicating the adjusting gears. When the operator rotates the adjusting rod 5, the pointer 56 is synchronously rotated, the pointer 56 points to the adjusting gears, and the operator can know the size of the damping force.

[0037] The implementation principle of the anti-impact single-out-rod shear thickening damper according to the embodiment one of the present application is as follows: when the damping force needs to be adjusted, the operator moves the adjusting rod 5 to the end of the adjusting slot 41 close to the cylinder 1, the adjusting gear 51 extends into the cylinder 1 from the adjusting opening 11 and engages with the blocking disc 3, the operator rotates the adjusting rod 5 to drive the blocking disc 3 to rotate, the communication hole 31 gradually guides the damping hole 22, and the operator knows the current adjustment condition through the adjusting gear indicated by the pointer. When the adjustment of the damping force is completed, the operator moves the adjusting rod 5 to the end of the adjusting slot 41 away from the cylinder 1, the adjusting gear 51 slides out of the adjusting opening 11 and is separated from the blocking disc 3, and the normal use of the cylinder 1 is ensured.

[0038] Embodiment two The difference between the embodiment two and the embodiment one is that the structure of the adjusting seat 4 is different. Refer to Figure 4 and Figure 5 The outer wall of the cylinder 1 is slidably connected with the blocking door 6 parallel to the movement direction of the piston 2 at the adjusting opening 11, and the blocking door 6 controls the opening and closing of the adjusting opening 11. The side wall of the cylinder 1 is fixed with the positioning plate 61 slidably connected in the adjusting opening 11. The length of the positioning plate 61 is not greater than the thickness of the cylinder 1, that is, the positioning plate 61 will not extend into the inside of the cylinder 1 to interfere with the movement of the piston 2.

[0039] Refer to Figure 4 and Figure 5 The end of the positioning plate 61 is provided with the positioning hole 62 facing the inside of the cylinder 1, the positioning hole 62 is slidably connected with the positioning block 63, and the positioning block 63 always slides in the positioning hole 62 without extending out of the positioning hole 62. The positioning block 63 and the bottom of the positioning hole 62 are connected with the positioning spring 64. The end of the positioning block 63 away from the positioning spring 64 is connected with the limiting block 66 which can extend out of the positioning hole 62 through the limiting spring 65. When the positioning spring 64 is stretched, the positioning block 63 pushes the limiting block 66 to extend out of the end of the positioning hole 62 and extend into the inside of the cylinder 1.

[0040] Refer to Figure 4 and Figure 5 The upper end of the positioning plate 61 is provided with the positioning slot 67 perpendicular to and communicating with the positioning hole 62, and the end of the positioning block 63 away from the limiting block 66 is located in the positioning slot 67 when the positioning spring 64 is in a natural state. The inner wall of the adjusting opening 11 is fixed with the protrusion 12 extending downward and opposite to the positioning slot 67. The lower end of the positioning plate 61 is located in the adjusting opening 11 when the blocking door 6 closes the adjusting opening 11. The upper end of the positioning plate 61 is located in the adjusting opening 11 when the blocking door 6 opens the adjusting opening 11, and the protrusion 12 is inserted into the positioning slot 67 at this time. The protrusion 12 stretches the positioning spring 64 by extruding the positioning block 63, pushes the positioning block 63 to slide to the direction of the cylinder 1, and drives the limiting spring 65 and the limiting block 66 to move and push the limiting block 66 out of the positioning hole 62 to extend into the inside of the cylinder 1.

[0041] Referring to Figure 4 and Figure 5 , the side wall of the piston 2 is provided with a limiting groove 24 above the baffle disc 3 and matched with the limiting block 66. When the damping force is needed, the piston 2 needs to be moved to the adjusting port 11, so that the baffle disc 3 is engaged with the adjusting gear 51. The limiting block 66 and the limiting groove 24 are matched with each other to improve the position accuracy of the piston 2. When the baffle door 6 opens the adjusting port 11, the limiting block 66 extends from the end of the positioning plate 61 into the inside of the cylinder barrel 1. During the sliding of the piston 2, the side wall of the piston 2 is in contact with the limiting block 66, and the limiting block 66 is extruded. Since the limiting block 63 is limited by the protrusion 12, the limiting block 66 extrudes the limiting spring 65, and the limiting block 66 retracts into the positioning hole 62. Until the limiting groove 24 is opposite to the limiting block 66, at this time, the limiting block 66 extends into the limiting groove 24 under the action of the limiting spring 65, thereby positioning the piston 2. At this time, the piston 2 is located at the adjusting port 11, and the baffle disc 3 is opposite to the adjusting port 11, so as to adjust.

[0042] Referring to Figure 4 and Figure 5 , the end of the limiting block 66 is arc-shaped, which is convenient for extruding from the limiting groove 24. After the adjustment is completed, the operator presses the baffle door 6, the limiting block 66 compresses the limiting spring 65, and the limiting block 66 extrudes from the limiting groove 24. The protrusion 12 slides out of the positioning groove 67, and the limiting spring 65 and the positioning spring 64 spring, so as to pull the limiting block 63 and the limiting block 66 into the positioning hole 62. The limiting block 66 and the piston 2 are separated, and the piston 2 can slide freely. The baffle door 6 closes the adjusting port 11.

[0043] Referring to Figure 4 and Figure 6 , the end of the adjusting groove 41 away from the cylinder barrel 1 is fixed with a locking rod 42 pointing to the adjusting rod 5, and the side of the adjusting rod 5 facing the locking rod 42 is circumferentially provided with a plurality of locking holes 53 matched with the locking rod 42. The adjusting rod 5 drives the adjusting gear 51 to slide towards the cylinder barrel 1, and the adjusting gear 51 and the baffle disc 3 are engaged and adjusted. After the adjustment is completed, the adjusting rod 5 drives the adjusting gear 51 to move away from the end of the adjusting groove 41 away from the cylinder barrel 1, until the locking rod 42 is inserted into the locking hole 53, so as to limit the adjusting rod 5 and the adjusting gear 51. The adjusting rod 5 and the adjusting gear 51 cannot rotate by themselves, thereby limiting the position state of the adjusting gear 51, so as to ensure that the adjusting gear 51 can be engaged with the baffle disc 3 next time.

[0044] Referring to Figure 4 and Figure 6The feedback groove 43 is concave, and the feedback bead 44 is slidably connected in the feedback groove 43 and points to the adjusting rod 5. The feedback bead 44 is connected with the feedback groove 43 through a feedback spring 45. When the feedback spring 45 is in a natural state, the feedback bead 44 extends out of the feedback groove 43. The adjusting rod 5 is provided with a plurality of embedding grooves 54 matched with the feedback bead 44. The embedding grooves 54 are arranged in sequence from deep to shallow, and the feedback bead 44 is located in different embedding grooves 54. The communication hole 31 communicates different numbers of hole groups. When the feedback bead 44 is located in the embedding groove 54 with a deeper depth, the communication hole 31 communicates more hole groups.

[0045] The implementation principle of the anti-impact single-out-rod shear thickening damper in the second embodiment of the application is as follows: when the adjusting gear 51 is engaged with the blocking disc 3, the operator rotates the adjusting rod 5, the adjusting gear 51 drives the blocking disc 3 to rotate, and the communication hole 31 gradually communicates the hole groups. When the communication hole 31 completely communicates a hole group, the feedback bead 44 is embedded in a feedback groove 43. When the operator rotates the adjusting rod 5, the feedback bead 44 is embedded in a feedback groove 43, and the embedding of the feedback bead 44 gives an operator a feedback signal, which is convenient for the operator to know the current adjusting condition. When it is needed to continue adjusting, the operator increases the torque to continue rotating the adjusting rod 5. At this time, the feedback bead 44 is extruded, the feedback bead 44 extrudes the feedback spring 45, and the feedback bead 44 is extruded out of the feedback groove 43 and abuts against the outer surface of the adjusting rod 5. With the rotation of the adjusting rod 5, the feedback bead 44 is embedded in the next feedback groove 43. When the operator rotates the adjusting rod 5 to adjust the damping force, the more the communication hole 31 communicates the damping holes 22, the deeper the embedding groove 54 in which the feedback bead 44 is embedded, and the more force the operator needs to rotate the adjusting rod 5. The operator can judge the size of the current damping force by the force of the current operation of the rotating rod, and the use is convenient.

[0046] The above are the preferred embodiments of the application, and do not limit the protection scope of the application. Therefore, equivalent changes made on the basis of the structure, shape and principle of the application should be covered in the protection scope of the application.

Claims

1. An impact resistant single-outlet rod shear thickening damper, characterized by: The utility model provides a damping device, including: cylinder; piston, slidingly connected in the cylinder, open with a plurality of damping holes; piston rod, one end is connected with the piston, the other end extends to the outside of the cylinder through the cylinder; baffle disc, rotationally connected on the piston for opening and closing the damping hole, open with the same number of communication holes for guiding the damping hole.

2. The impact resistant mono-bar shear thickening damper according to claim 1, wherein: The damping holes are arranged in groups to form a plurality of hole groups, and the hole groups are distributed on the piston along the movement track direction of the baffle disc, and each hole group includes at least one damping hole.

3. The impact resistant mono-bar shear thickening damper according to claim 2, wherein: The middle position of the piston is coaxially provided with an annular concave rotating groove, and the baffle disc is rotationally connected in the rotating groove.

4. The impact resistant mono-bar shear thickening damper of claim 2, wherein: The side wall of the cylinder is provided with an adjusting port, and the outer wall of the cylinder is fixed with an adjusting seat at the adjusting port, and the adjusting seat is rotationally connected with an adjusting gear for driving the baffle disc to rotate.

5. The impact resistant mono-bar shear thickening damper of claim 4, wherein: The adjusting gear is coaxially connected with an adjusting rod, the upper end of the adjusting seat is provided with an adjusting groove in the radial direction of the cylinder, the upper end of the adjusting rod is connected in the adjusting groove and is slidingly connected in the adjusting groove, a soft rubber sheet is sealed in the adjusting groove, a through hole is formed in the rubber sheet, the adjusting rod is sealingly connected in the through hole, when the adjusting rod is located at one end of the adjusting groove close to the cylinder, the end of the adjusting gear extends into the cylinder from the adjusting port, when the adjusting rod is located at one end of the adjusting groove away from the cylinder, the end of the adjusting gear is retracted into the adjusting seat.

6. The impact resistant mono-bar shear thickening damper according to claim 5, wherein: A plurality of locking holes are formed in the circumferential direction of the adjusting rod, and a locking rod is fixed at one end of the adjusting groove away from the cylinder and matched with the locking hole.

7. The impact resistant mono-bar shear thickening damper of claim 5, wherein: The end of the adjusting groove close to the cylinder is provided with a concave feedback groove, a feedback bead is slidingly connected in the feedback groove and directed to the adjusting rod, the feedback bead and the feedback groove are connected through a feedback spring, a plurality of embedding grooves matched with the feedback bead are formed in the adjusting rod, the feedback bead is located in different embedding grooves, and the communication hole guides different numbers of hole groups.

8. The impact resistant mono-bar shear thickening damper of claim 7, wherein: The depths of the embedding grooves are arranged in order from deep to shallow, the feedback bead is located in the embedding groove with deeper depth, and the communication hole guides more hole groups.

9. The impact resistant mono-bar shear thickening damper of claim 4, wherein: The outer wall of the cylinder is slidingly connected with a baffle door parallel to the movement direction of the piston at the adjusting port, the inner wall of the adjusting port is fixed with a downward extending protrusion, the baffle door is fixed with a positioning plate slidingly connected in the adjusting port, the length of the positioning plate is not greater than the thickness of the cylinder, a positioning hole is formed in the positioning plate and directed to the inner wall of the cylinder, a positioning block is slidingly connected in the positioning hole, a positioning spring is arranged between the positioning block and the bottom of the positioning hole, a limiting block is connected to the side away from the positioning spring through a limiting spring, the limiting block is retracted in the positioning hole when the positioning spring and the limiting spring are in a natural state, a positioning groove is formed in the positioning plate and opposite to the protrusion, the end of the positioning block away from the limiting block is located in the positioning groove when the positioning spring is in a natural state, and a limiting groove is formed in the side wall of the piston and matched with the limiting block.

10. The impact resistant mono-bar shear thickening damper of claim 1, wherein: The cylinder is divided into a rod cavity with a piston rod and a rodless cavity without the piston rod by the piston, a compensation rod is fixed in the rodless cavity and coaxially arranged with the piston, a compensation cavity opposite to the compensation rod is arranged in the center of the piston coaxial with the piston rod, the compensation rod is slidably connected in the compensation cavity, and the piston rod is a variable-diameter rod and a vent hole is arranged in the center of the piston rod and communicated with the compensation cavity.

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