Suspended low-frequency shock absorber with adjustable spacer ring

Abstract

The utility model discloses a suspension low-frequency shock absorber with an adjustable spacer ring, relates to the technical field of shock absorbers, and aims to solve the problems that the installation difficulty of a middle spacer ring is easily increased and the universality of the middle spacer ring is poorer due to the design of an integrated fixing sleeve and a fixed middle spacer ring in an existing shock absorber. The low-frequency shock absorber comprises a fixed sleeve assembly, a connecting bolt assembly, a fixed shell and two pieces of metal rubber, the two pieces of metal rubber are oppositely embedded in the two ends of the fixed sleeve assembly to form a shock absorption body, and the shock absorption body is installed in the fixed shell through the connecting bolt assembly to form a low-frequency shock absorber body; the fixed sleeve assembly comprises a first sleeve body, a second sleeve body and an adjustable spacer ring unit, the first sleeve body and the second sleeve body form a fixed sleeve main body, and the adjustable spacer ring unit axially extends and contracts in the fixed sleeve main body by adjusting the adjusting end of the adjustable spacer ring unit outside the fixed sleeve main body. The low-frequency damping device is mainly used in the piston engine.

Description

Technical Field

[0001] The utility model belongs to the technical field of vibration absorbers, and in particular relates to a suspended low-frequency vibration absorber with an adjustable spacer ring. Background Art

[0002] The main component for achieving vibration reduction in the low-frequency shock absorber of the suspension is the built-in metal rubber. When installing the metal rubber, it is necessary to ensure that the metal rubber is in a clamped state so as to achieve the best vibration reduction effect. Therefore, when arranging the metal rubber, it is necessary to ensure that one end of the metal rubber is in contact with the middle spacer ring, and the other end of the metal rubber is to extend 1mm to 2mm beyond the end face of the fixed sleeve. This is convenient for squeezing and fixing it with the end cover or end plate of the shock absorber to avoid the occurrence of arrangement gaps that affect the vibration reduction effect of the shock absorber. When designing the shock absorber, the thickness of the metal rubber must first be calculated according to the vibration reduction requirements, and the length of the fixing sleeve must be designed according to the installation size requirements. The size of the middle spacer ring is designed based on the length of the fixing sleeve and the thickness of the metal rubber. After the prepared middle spacer ring is fixed in the fixing sleeve, the metal rubber is installed. This installation and design mode will cause the following two disadvantages:

[0003] First, the existing retaining sleeves in shock absorbers all use an integral design. Installing the middle spacer ring in the retaining sleeve is very difficult and prone to installation errors, resulting in poor symmetry between the two metal rubbers in the shock absorber, affecting the vibration reduction effect.

[0004] Second, for shock absorbers with different vibration damping ranges, the size of the middle spacer ring must also change accordingly. Therefore, each time a new type of shock absorber is developed, a batch of middle spacer rings of new sizes must be manufactured. The fixed middle spacer ring has poor adaptability for mass production and supporting production, which reduces the versatility of the non-vibration damping parts of the shock absorber.

[0005] Therefore, it is in line with practical needs to develop a suspension low-frequency vibration absorber with an adjustable spacer ring to address the above problems. Utility Model Content

[0006] In order to solve the problems that the design of the integrated fixing sleeve and the fixed middle spacer ring in the existing vibration damping body easily leads to increased difficulty in installing the middle spacer ring and poor versatility of the middle spacer ring, the utility model provides a suspension low-frequency vibration damper with an adjustable spacer ring;

[0007] The cam is fixed to the chassis and is secured to the chassis by means of a screw thread insert, the screw thread insert being fixed to the chassis and being secured to the chassis by means of a screw thread insert.

[0008] Furthermore, the connecting bolt assembly includes a locking nut, a connecting bolt and two end washers, each end washer is correspondingly arranged on the inner side of one end wall of the fixed housing, the vibration damping body is arranged between the two end washers, the threaded end of the connecting bolt is sequentially fixed to one end wall of the housing, one end washer, the vibration damping body, the other end washer and the other end wall of the fixed housing and extends to the outside of the fixed housing, the locking nut is arranged on the outside of the other end wall of the fixed housing and is sleeved on the connecting bolt, and the connecting bolt is fastened to the fixed housing through the locking nut;

[0009] Furthermore, at least two threaded through holes are machined on the outer surface of the fixed housing, a locking bolt is inserted into each threaded through hole, and both locking bolts are threadably connected to the fixed housing, and the threaded end of each locking bolt extends into the fixed housing and is in close contact with the outer ring wall of the fixed sleeve assembly;

[0010] Furthermore, one end of the No. 1 cylinder is a plug-in end, and a plurality of plug-in rods are equidistantly provided on the end surface of the plug-in end along the circumferential direction. The axial direction of each plug-in rod is arranged parallel to the axial direction of the No. 1 cylinder, and one end of each plug-in rod is fixedly connected to the plug-in end of the No. 1 cylinder. Two No. 1 splicing half grooves are equidistantly processed on the end surface of the plug-in end of the No. 1 cylinder along the circumferential direction, and each No. 1 splicing half groove is staggered with the plug-in rod. The No. 1 cylinder is plugged and fixed to the No. 2 cylinder through the plurality of plug-in rods.

[0011] Furthermore, one end of the No. 2 cylinder is a socket end, and a plurality of socket holes are processed on the end surface of the socket end at equal distances along the circumference, and each socket hole is coaxially corresponding to a splicing rod. Two No. 2 splicing half grooves are processed on the end surface of the splicing end of the No. 2 cylinder at equal distances along the circumference, and each No. 2 splicing half groove is corresponding to a No. 1 splicing half groove. The No. 1 cylinder is spliced ​​and fixed with the No. 2 cylinder through the cooperation of multiple splicing rods and multiple socket holes. Each No. 2 splicing half groove is spliced ​​with a No. 1 splicing half groove to form an extension channel of the adjustment end of the adjustable spacer ring unit;

[0012] Furthermore, the adjustable spacer ring unit includes two spacer rings and two axial extension adjustment mechanisms, one spacer ring is arranged in the plug end of the No. 1 cylinder body, and the other spacer ring is arranged in the socket end of the No. 2 cylinder body, and the two spacer rings are coaxially arranged opposite to each other, and the two axial extension adjustment mechanisms are equidistantly arranged between the two spacer rings along the circumferential direction, and the two transmission ends on each axial extension adjustment mechanism are respectively transmission-connected to a spacer ring, and the adjustment end of each axial extension adjustment mechanism extends to the outside of the fixed sleeve body through an extension channel formed by splicing a No. 1 splicing half groove and a No. 2 splicing half groove, and is fixed to the outer ring wall of the fixed sleeve body;

[0013] Furthermore, the axial extension adjustment mechanism includes a double-rotation screw, a belt transmission mechanism, a fixing frame, a locking nut, a rotating bolt and two lifting seats. The double-rotation screw is arranged between two spacer rings, and each spacer ring is provided with a threaded sleeve on one end close to the double-rotation screw. The threaded sleeve is coaxially arranged with the double-rotation screw. One end of the threaded sleeve is fixedly connected to the spacer ring, and the other end of the threaded sleeve is sleeved on the double-rotation screw and is threadedly connected to the double-rotation screw. The middle part of the double-rotation screw is sleeved with two lifting seats, and the double-rotation screw and the two lifting seats are rotatably connected through bearings. The double-rotation screw is detachably connected to the inner ring wall of the plug-in end of the No. 1 cylinder through a lifting seat, and the double-rotation screw is detachably connected to the inner ring wall of the socket end of the No. 2 cylinder through another lifting seat. The belt transmission mechanism The driven end is sleeved on the middle part of the double-rotation screw, and the driven end of the belt transmission mechanism is located between the two lifting seats, the active end of the belt transmission mechanism passes through the extension channel formed by the corresponding No. 1 splicing half groove and the No. 2 splicing half groove and extends to the outside of the fixed sleeve body, the fixed frame is buckled on the active end of the belt transmission mechanism, and the two legs of the fixed frame are detachably connected to the No. 1 cylinder body and the No. 2 cylinder body by bolts respectively, the threaded end of the rotating bolt passes through one leg of the fixed frame, the active end of the belt transmission mechanism, and the other leg of the fixed frame in turn and is inserted into the locking nut located outside the fixed frame, and the rotating bolt is threadedly connected to the locking nut, the rotating bolt is fixedly connected to the active end of the belt transmission mechanism, and the rotating bolt and the two legs of the fixed frame are both clearance-fitted;

[0014] Furthermore, the double-rotation screw is a split structure, the double-rotation screw comprises a forward-rotation screw and a counter-rotation screw, the forward-rotation screw and the counter-rotation screw are coaxially arranged, and one end of the forward-rotation screw is fixedly plugged into one end of the counter-rotation screw, a lifting seat is sleeved on the outer circular surface of one end connecting the forward-rotation screw and the counter-rotation screw, and is detachably connected to the first cylinder through the lifting seat, the other end of the forward-rotation screw is inserted into the corresponding threaded sleeve and threadedly connected to it, and another lifting seat is provided on the outer circular surface of one end connecting the counter-rotation screw and the forward-rotation screw and is detachably connected to the second cylinder through the lifting seat, the other end of the counter-rotation screw is inserted into the corresponding threaded sleeve and threadedly connected to it, the driven end of the belt transmission mechanism is sleeved at the connection between the forward-rotation screw and the counter-rotation screw, and the belt transmission mechanism is fixedly connected to the forward-rotation screw and the counter-rotation screw through a locking pin;

[0015] Furthermore, the belt transmission mechanism includes a driving pulley, a driven pulley and a transmission belt, the driving pulley is sleeved on the rotating bolt, and the driving pulley is fixedly connected to the rotating bolt through a locking pin, the driven pulley is sleeved on the connection between the forward-rotating screw and the reverse-rotating screw, and the driven pulley is fixedly connected to the forward-rotating screw and the reverse-rotating screw through a locking pin, the transmission belt is sleeved on the driving pulley and the driven pulley, and the driving pulley is connected to the driven pulley through the transmission belt;

[0016] Furthermore, a plurality of guide support structures are equidistantly arranged between the two spacer rings along the circumferential direction, and both ends of each guide support structure are fixedly connected to a spacer ring respectively. The guide support structure includes a guide sleeve and a guide rod. One end of the guide sleeve is fixedly connected to the corresponding spacer ring end wall, one end of the guide rod is fixedly connected to the corresponding spacer ring end wall, and the other end of the guide rod is inserted into the other end of the corresponding guide sleeve and is slidably connected to the corresponding guide sleeve.

[0017] The beneficial effects of this application compared to the prior art are as follows:

[0018] 1. The present application proposes a suspension low-frequency vibration absorber with an adjustable spacer ring. Compared with the traditional suspension low-frequency vibration absorber, the traditional one-piece fixed sleeve structure is optimized into a split sleeve structure. The design of the combined cylinder can make the installation of the middle spacer ring more convenient, and can also improve the installation accuracy of the middle spacer ring during installation, which is more conducive to ensuring the symmetry of the two metal rubbers, thereby ensuring the vibration reduction effect.

[0019] 2. The present application proposes a suspension low-frequency vibration absorber with an adjustable spacer ring. Compared with the traditional suspension low-frequency vibration absorber, the traditional fixed middle spacer ring structure is optimized into an adjustable design. The thickness of the middle spacer ring can be adjusted as needed to adapt to the installation requirements of metal rubbers of different thicknesses, thereby improving the versatility of non-vibration-damping components in the shock absorber. The adjustable middle spacer ring has a certain degree of fine-tuning, and the end extension of each metal rubber can be ensured through fine-tuning (extending 1mm to 2mm from the end face of the fixed sleeve), thereby improving the reliability of the metal rubber during installation and the compactness and compressibility of the metal rubber after installation, so that the assembled shock absorber can achieve the best vibration reduction effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the main view of the suspension low-frequency vibration absorber described in this application;

[0021] Figure 2 This is a schematic diagram of the interior of the suspension low-frequency vibration absorber described in this application;

[0022] Figure 3 This is a schematic diagram of the main view of the suspension low-frequency vibration absorber described in this application (without the vibration absorber installed);

[0023] Figure 4 This is a schematic front view of a fixed sleeve in the suspension low-frequency vibration absorber described in this application;

[0024] Figure 5 This is a top view of a fixed sleeve in the suspension low-frequency vibration absorber described in this application;

[0025] Figure 6 This is a schematic diagram of the installation of the fixed sleeve and the metal rubber in the suspension low-frequency vibration absorber described in this application;

[0026] Figure 7 This is a main cross-sectional schematic diagram of a fixed sleeve in the suspension low-frequency vibration absorber described in this application;

[0027] Figure 8 This is a partial enlarged view of the fixed sleeve A in the suspension low-frequency vibration absorber described in this application;

[0028] Figure 9 This is a schematic diagram of the arrangement of the guide sleeve in the suspension low-frequency vibration absorber described in this application;

[0029] Figure 10 This is a schematic diagram of the arrangement of the guide rods in the suspension low-frequency vibration absorber described in this application;

[0030] Figure 11 This is a top view of the No. 1 sleeve in the suspension low-frequency vibration absorber described in this application;

[0031] Figure 12This is a top view of the second sleeve in the suspension low-frequency vibration absorber described in this application;

[0032] Figure 13 This is a schematic diagram of the plug-in end of sleeve No. 1 in the suspension low-frequency vibration absorber described in this application;

[0033] Figure 14 This is a schematic diagram of the connecting end of the No. 2 sleeve in the suspension low-frequency vibration absorber described in this application;

[0034] In the figure, 1 is a fixed sleeve assembly, 11 is a cylinder body No. 1, 1101 is a connecting rod, 1102 is a splicing half groove No. 1, 12 is a cylinder body No. 2, 1201 is a socket, 1202 is a splicing half groove No. 2, 13 is a spacer ring, 131 is a threaded sleeve, 14 is a double-rotation screw, 15 is a lifting seat, 16 is a belt drive mechanism, 17 is a fixed frame, 18 is a locking nut, 19 is a rotating bolt, 110 is a guide sleeve, 111 is a guide plug rod, 2 is a metal rubber, 3 is a connecting bolt assembly, 4 is a fixed shell and 5 is a locking bolt. DETAILED DESCRIPTION

[0035] Specific implementation method 1: Combination Figures 1 to 14 This embodiment describes a suspension low-frequency vibration absorber with an adjustable spacer ring, which is characterized in that: the suspension low-frequency vibration absorber includes a fixed sleeve assembly 1, a connecting bolt assembly 3, a fixed shell 4 and two metal rubbers 2, the two metal rubbers 2 are relatively embedded at both ends of the fixed sleeve assembly 1 to form a vibration damping body, and the vibration damping body is installed in the fixed shell 4 through the connecting bolt assembly 3 to form the low-frequency vibration absorber body, the fixed sleeve assembly 1 includes a first cylinder 11, a second cylinder 12 and an adjustable spacer ring unit, the first cylinder 11 and the second cylinder 12 are respectively installed at both ends of the fixed sleeve assembly 1 to form a vibration damping body, and ... The cylinder body 12 is coaxially arranged, and one end of the No. 1 cylinder body 11 and one end of the No. 2 cylinder body 12 are plugged and fixed to form a fixed sleeve body. The adjustable spacer ring unit is arranged in the fixed sleeve body, and the adjustable spacer ring unit is installed at the connection between the No. 1 cylinder body 11 and the No. 2 cylinder body 12. The adjusting end of the adjustable spacer ring unit passes through the cylinder wall of the fixed sleeve body and extends to the outside of the fixed sleeve body. By adjusting the adjusting end of the adjustable spacer ring unit outside the fixed sleeve body, the axial extension and contraction of the adjustable spacer ring unit in the fixed sleeve body is achieved.

[0036] This embodiment provides a suspended low-frequency vibration absorber with an adjustable spacer ring. The split sleeve design can make the installation of the middle spacer ring more convenient through the design of the combined cylinder, and can also improve the installation accuracy of the middle spacer ring during installation, which is more conducive to ensuring the symmetry of the two metal rubbers, thereby ensuring the vibration reduction effect of the vibration reduction. At the same time, it is equipped with an adjustable spacer ring unit, which improves the adaptability of the spacer ring compared to the traditional fixed spacer ring structure, and can realize fine-tuning of the layout position of the metal rubber, thereby improving the reliability of the metal rubber during installation and the compactness and compressibility of the metal rubber after installation, so that the assembled vibration absorber can achieve the best vibration reduction effect.

[0037] Specific implementation method 2: Combination Figures 1 to 14 This embodiment is described. This embodiment differs from the first embodiment in that the connecting bolt assembly 3 includes a locking nut, a connecting bolt 31, and two end washers 32. Each end washer 32 is correspondingly disposed on the inner side of one end wall of the fixed housing 4. The vibration damper is disposed between the two end washers 32. The threaded end of the connecting bolt 31 sequentially secures one end wall of the housing 4, one end washer 32, the vibration damper, the other end washer 32, and the other end wall of the fixed housing 4, extending to the outside of the fixed housing 4. The locking nut is disposed on the outside of the other end wall of the fixed housing 4 and is sleeved on the connecting bolt 31. The connecting bolt 31 is fastened to the fixed housing 4 via the locking nut. Other components and connection methods are the same as those of the first embodiment.

[0038] The connecting bolt 31 in the connecting bolt assembly 3 provided in this embodiment is an important component for connecting the metal rubber 2 in series. It is used to support the metal rubber 2 and the fixing sleeve 1. The end washer 32 included in the connecting bolt assembly 3 is a component for protecting and limiting the end of the metal rubber 2, which can ensure the installation accuracy and stability of the end washer 32. At the same time, the connecting bolt 31 also serves as an insert connected to the cantilever, and is used to cooperate with the axial connection assembly 6 to fix the shock absorber structure on the cantilever.

[0039] Specific implementation method three: Combination Figures 1 to 14 This embodiment differs from the second embodiment in that at least two threaded through-holes are machined on the outer surface of the fixed housing 4, each of which is inserted with a locking bolt 5. Both locking bolts 5 are detachably threadedly connected to the fixed housing 4. The threaded end of each locking bolt 5 extends into the fixed housing 4 and is in close contact with the outer annular wall of the fixed sleeve assembly 1. The rest of the components and connection methods are the same as those of the second embodiment.

[0040] In this embodiment, the locking bolt 5 is used to fasten and fix the housing 4 and flexibly adjust the position of the vibration damper and the vibration source to achieve the best vibration damping effect.

[0041] Specific implementation method four: Combination Figures 1 to 14 This embodiment is described. The difference between this embodiment and the third embodiment is that one end of the No. 1 cylinder body 11 is a plug-in end, and a plurality of plug-in rods 1101 are circumferentially equidistantly provided on the end face of the plug-in end. The axial direction of each plug-in rod 1101 is arranged parallel to the axial direction of the No. 1 cylinder body 11, and one end of each plug-in rod 1101 is fixedly connected to the plug-in end of the No. 1 cylinder body 11. Two No. 1 splicing half grooves 1102 are circumferentially equidistantly processed on the end face of the plug-in end of the No. 1 cylinder body 11, and each No. 1 splicing half groove 1102 is staggered with the plug-in rod 1101. The No. 1 cylinder body 11 is plugged and fixed to the No. 2 cylinder body 12 via the plurality of plug-in rods 1101. The other components and connection methods are the same as those of the third embodiment.

[0042] Specific implementation method five: Combination Figures 1 to 14 This embodiment is described. The difference between this embodiment and the fourth embodiment is that one end of the second cylinder body 12 is a socket end, and a plurality of socket holes 1201 are machined circumferentially and equidistantly on the end face of the socket end, and each socket hole 1201 is coaxially arranged with a plug rod 1101. Two second splicing half grooves 1202 are machined circumferentially and equidistantly on the end face of the plug end of the second cylinder body 12, and each second splicing half groove 1202 is arranged correspondingly to a first splicing half groove 1102. The first cylinder body 11 is fixedly connected to the second cylinder body 12 by the cooperation of a plurality of plug rods 1101 and a plurality of socket holes 1201. Each second splicing half groove 1202 is spliced ​​with a first splicing half groove 1102 to form an extension channel for the adjustment end of the adjustable spacer ring unit. Other components and connection methods are the same as those of the fourth embodiment.

[0043] In combination with the description of specific implementation mode four and specific implementation mode five, cylinder body No. 11 and cylinder body No. 2 12 are plugged and fixed by plugging in the plug rod 1101 and the socket 1201 to ensure the stability of the connection between cylinder body No. 11 and cylinder body No. 2 12. In actual work, a flexible rubber pad can be attached to the plug-in surface of cylinder body No. 11 and cylinder body No. 2 12. The thickness of the pad is between 0.5mm and 1mm. In this way, rigid contact can be prevented when the two cylinders are docked, avoiding damage to the cylinders themselves. At the same time, the sealing of the fixed sleeve body can be improved by squeezing the rubber pad, which is beneficial to protecting the internal structure of the sleeve.

[0044] Specific implementation method six: combination Figures 1 to 14This embodiment is described. The difference between this embodiment and the fourth embodiment is that the adjustable spacer ring unit includes two spacer rings 13 and two axial extension adjustment mechanisms. One spacer ring 13 is arranged in the plug end of the No. 1 cylinder body 11, and the other spacer ring 13 is arranged in the socket end of the No. 2 cylinder body 12. The two spacer rings 13 are coaxially arranged relative to each other. The two axial extension adjustment mechanisms are equidistantly arranged between the two spacer rings 13 along the circumferential direction, and the two transmission ends on each axial extension adjustment mechanism are respectively connected to a spacer ring 13 in transmission. The adjustment end of each axial extension adjustment mechanism extends to the outside of the fixed sleeve body through an extension channel formed by splicing a No. 1 splicing half groove 1102 and a No. 2 splicing half groove 1202 and is fixed to the outer ring wall of the fixed sleeve body. Other components and connection methods are the same as those of the fifth embodiment.

[0045] Specific implementation method seven: combination Figures 1 to 14 This embodiment is described. The difference between this embodiment and the specific embodiment 6 is that the axial extension adjustment mechanism includes a double-rotation screw 14, a belt transmission mechanism 16, a fixing frame 17, a locking nut 18, a rotating bolt 19 and two hanging seats 15. The double-rotation screw 14 is arranged between two spacer rings 13, and each spacer ring 13 is provided with a threaded sleeve 131 on one end close to the double-rotation screw 14. The threaded sleeve 131 is coaxially arranged with the double-rotation screw 14. One end of the threaded sleeve 131 is fixedly connected to the spacer ring 13, and the other end of the threaded sleeve 131 is sleeved on the double-rotation screw 14 and is threadedly connected to the double-rotation screw 14. The middle part of the double-rotation screw 14 is sleeved with two lifting seats 15, and the double-rotation screw 14 and the two lifting seats 15 are rotatably connected through bearings. The double-rotation screw 14 is disassembled and connected to the inner ring wall of the plug-in end of the No. 1 cylinder 11 through a lifting seat 15, and the double-rotation screw 14 is disassembled and connected to the socket end of the No. 2 cylinder 12 through another lifting seat 15. The inner ring wall is disassembled and connected, the driven end of the belt transmission mechanism 16 is sleeved in the middle of the double-rotation screw 14, and the driven end of the belt transmission mechanism 16 is located between the two lifting seats 15, the active end of the belt transmission mechanism 16 passes through the extension channel formed by the corresponding No. 1 splicing half groove 1102 and the No. 2 splicing half groove 1202 and extends to the outside of the fixed sleeve body, the fixed frame 17 is buckled on the active end of the belt transmission mechanism 16, and the two legs of the fixed frame 17 are respectively disassembled and connected to the No. 1 cylinder 11 and the No. 2 cylinder 12 by bolts, the threaded end of the rotating bolt 19 passes through one leg of the fixed frame 17, the active end of the belt transmission mechanism 16, and the other leg of the fixed frame 17 in turn and is inserted into the locking nut 18 located outside the fixed frame 17, and the rotating bolt 19 is threadedly connected to the locking nut 18, the rotating bolt 19 is fixedly connected to the active end of the belt transmission mechanism 16, and the rotating bolt 19 and the two legs of the fixed frame 17 are both clearance-fitted. Other components and connection methods are the same as those in the sixth embodiment.

[0046] In combination with the description of specific embodiments six to seven, the adjustable spacer ring unit can make the two spacer rings 13 move toward and away from each other synchronously through the axial extension adjustment mechanism, and then the two spacer rings 13 are adjusted synchronously to ensure the consistency of the two metal rubbers. The gap between the spacer rings 13 and the cylinders in which they are located is matched to ensure the smoothness of their movement. The axial extension adjustment mechanism mainly relies on the rotation of the double-rotation screw 14 to drive the threaded sleeve 131 to slide along the axial direction of the double-rotation screw 14, thereby pushing the spacer ring 13 to move. The double-rotation screw 14 is hoisted and fixed by two hoisting seats 15 to ensure the double rotation. The working stability of the double-rotation screw 14 is ensured. The double-rotation screw 14 is driven by a belt transmission mechanism 16. The active end of the belt transmission mechanism 16 extends to the outside of the sleeve for easy adjustment by the staff. The power source of the belt transmission mechanism 16 is manually driven. The torque is transmitted to the double-rotation screw 14 through the belt transmission mechanism 16 by manually turning the rotating bolt 19, so that the double-rotation screw 14 rotates. When the double-rotation screw 14 is adjusted into place, the rotating bolt 19 is locked by the locking nut 18 to fix it, ensuring that the rotation angle of the double-rotation screw 14 no longer changes, thereby locking the working position of the spacer ring 13.

[0047] Specific implementation method eight: combination Figures 1 to 14 Explain this embodiment. The difference between this embodiment and the specific embodiment seven is that the double-rotation screw 14 is a split structure. The double-rotation screw 14 includes a forward-rotation screw and a reverse-rotation screw. The forward-rotation screw and the reverse-rotation screw are coaxially arranged, and one end of the forward-rotation screw is plugged and fixed with one end of the reverse-rotation screw. A hanging seat 15 is provided on the outer surface of the end where the forward-rotation screw and the reverse-rotation screw are connected, and is detachably connected to the first cylinder 11 through the hanging seat 15. The other end of the forward-rotation screw Inserted into the corresponding threaded sleeve 131 and threadedly connected thereto, another hanging seat 15 is provided on the outer circumferential surface of one end of the counter-rotating screw connected to the forward-rotating screw and is detachably connected to the second barrel 12 through the hanging seat 15, and the other end of the counter-rotating screw is inserted into the corresponding threaded sleeve 131 and threadedly connected thereto, and the driven end of the belt transmission mechanism 16 is sleeved at the connection between the forward-rotating screw and the counter-rotating screw, and the belt transmission mechanism 16 is fixedly connected to the forward-rotating screw and the counter-rotating screw through a locking pin. Other components and connection methods are the same as those of the specific embodiment seven.

[0048] In this embodiment, considering the inconvenience of the overall installation of the double-rotation screw 14, it is improved into a split structure. According to the different rotation directions of the double-rotation screw 14, it is divided into a forward-rotation screw and a reverse-rotation screw, and the forward-rotation screw and the reverse-rotation screw are connected by plugging. In actual work, an insert rod can be added to the end of the forward-rotation screw, an insert hole can be processed at the end of the reverse-rotation screw, and locking holes can be processed radially on the hole wall of the insert hole and the rod body of the insert rod. This design can lock and fix the forward-rotation screw and the reverse-rotation screw by inserting a locking pin radially after the forward-rotation screw and the reverse-rotation screw are plugged in and combined, thereby ensuring the working stability of the double-rotation screw 14.

[0049] Specific implementation method nine: combination Figures 1 to 14 This embodiment differs from the eighth embodiment in that the belt drive mechanism 16 includes a driving pulley, a driven pulley, and a transmission belt. The driving pulley is mounted on a rotating bolt 19 and is fixedly connected to the rotating bolt 19 via a locking pin. The driven pulley is mounted on the connection between the forward-rotating screw and the reverse-rotating screw and is fixedly connected to the forward-rotating screw and the reverse-rotating screw via a locking pin. The transmission belt is mounted on the driving pulley and the driven pulley and is connected to the driven pulley via the transmission belt. Other components and connection methods are the same as those of the eighth embodiment.

[0050] In this embodiment, in order to ensure the connection stability between the driven pulley and the dual-rotation screw 14, a locking pin hole can be processed on the outer wall of the driven pulley, and the locking pins used for fixing in the forward-rotation screw and the reverse-rotation screw in the dual-rotation screw 14 can be extended so that both ends can extend to the locking pin holes on the driven pulley. It is worth noting that the end of the locking pin cannot extend to the surface of the driven pulley to prevent the transmission belt from working.

[0051] Specific implementation method ten: Combination Figures 1 to 14 This embodiment differs from the ninth embodiment in that multiple guide support structures are equidistantly spaced circumferentially between the two spacer rings 13. Each guide support structure is fixedly connected to a spacer ring 13 at both ends. The guide support structure includes a guide sleeve 110 and a guide rod 111. One end of the guide sleeve 110 is fixedly connected to the end wall of the corresponding spacer ring 13. One end of the guide rod 111 is fixedly connected to the end wall of the corresponding spacer ring 13. The other end of the guide rod 111 is inserted into the other end of the corresponding guide sleeve 110 and slidably connected to the corresponding guide sleeve 110. Other components and connection methods are the same as those of the ninth embodiment.

[0052] In this embodiment, the guide support structure is used to provide auxiliary support and guidance for the two spacer rings 13. The guide rod 111 and the guide sleeve 110 are connected by a damping sliding connection, and the damping force is relatively small. It can be achieved by arranging a thin rubber layer on the inner wall of the guide sleeve 110 or the outer tube of the rod 111. The damping force does not affect the movement trend of the spacer ring 13, but is only used to improve the accuracy and stability of the relative movement of the two spacer rings 13.

[0053] The present invention has been disclosed as above with preferred implementation cases, but it is not intended to limit the present invention. Any technician familiar with the profession can make slight changes or modifications to the above-disclosed structures and technical contents without departing from the scope of the technical solution of the present invention. Equivalent implementation cases with equivalent changes can be made by using the above-disclosed structures and technical contents. However, any simple modifications, equivalent changes and modifications made to the above implementation cases based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

[0054] How it works

[0055] When the present application is working, one end of the forward-rotating screw and the reverse-rotating screw is first inserted into the threaded sleeve of the corresponding spacer ring 13, and then the other end of the forward-rotating screw and the reverse-rotating screw are respectively passed through the bearings in the corresponding hanging frame 15, and the belt transmission mechanism 16 is arranged between the two hanging frames 15. Accompanied by the plug-in work of the No. 1 cylinder body 11 and the No. 2 cylinder body 12, the No. 1 cylinder body 11 and the No. 2 cylinder body 12 are spliced ​​into a complete solid sleeve body. During the assembly process of the solid sleeve body, one end of the forward-rotating screw is inserted into the driven pulley of the belt transmission mechanism 16 and is tightly fixed with the reverse-rotating screw. In order to further ensure the tightness of the connection between the three, the locking pin can be inserted from the extension channel constructed by the No. 1 spliced ​​half groove 1102 and the No. 2 spliced ​​half groove 1202 into the pre-jointed locking hole to achieve locking and fixing. At this time, the process is completed. The fixed sleeve assembly 1 is assembled. After the fixed sleeve assembly 1 is assembled, the active pulley in the belt transmission mechanism 16 is installed on the rotating bolt 19, and the rotating bolt 19 is installed on the fixed frame 17 through the locking nut 18, and the fixed frame 17 is installed on the outer ring wall of the fixed sleeve. At this point, the fixed sleeve assembly 1 is assembled. The two metal rubbers 2 are relatively arranged at both ends of the fixed sleeve assembly 1. At the same time, the two rotating bolts 19 are synchronously rotated to drive the double-rotation screw 14 to rotate. At this time, the two spacer rings 13 move outward to push one end of the metal rubber 2 to extend 1mm to 2mm outside the fixed sleeve. At this time, the vibration damper is constructed. The vibration damper is installed in the fixed housing 4 through the connecting bolt assembly 3, and the vibration damper is radially locked by multiple locking bolts 5. At this point, the suspension low-frequency vibration damper is assembled.

Claims

1. A suspension low-frequency vibration absorber with an adjustable spacer ring, characterized in that: The suspension low-frequency vibration damper comprises a fixed sleeve assembly (1), a connecting bolt assembly (3), a fixed shell (4) and two metal rubbers (2). The two metal rubbers (2) are relatively embedded at both ends of the fixed sleeve assembly (1) to form a vibration damper. The vibration damper is installed in the fixed shell (4) through the connecting bolt assembly (3) to form a low-frequency vibration damper body. The fixed sleeve assembly (1) comprises a first cylinder (11), a second cylinder (12) and an adjustable spacer ring unit. The first cylinder (11) and the second cylinder (12) are coaxially arranged, and One end of the No. 1 cylinder body (11) and one end of the No. 2 cylinder body (12) are plugged and fixed to form a fixed sleeve body, and the adjustable spacer ring unit is arranged in the fixed sleeve body, and the adjustable spacer ring unit is installed at the connection between the No. 1 cylinder body (11) and the No. 2 cylinder body (12), and the adjustment end of the adjustable spacer ring unit passes through the cylinder wall of the fixed sleeve body and extends to the outside of the fixed sleeve body. By adjusting the adjustment end of the adjustable spacer ring unit outside the fixed sleeve body, the adjustable spacer ring unit can be axially extended and contracted in the fixed sleeve body.

2. The suspension low-frequency vibration absorber with an adjustable spacer ring according to claim 1, characterized in that: The connecting bolt assembly (3) comprises a locking nut, a connecting bolt (31) and two end washers (32), each end washer (32) being correspondingly arranged on the inner side of an end wall of the fixed housing (4), and a vibration damper being arranged between the two end washers (32). The threaded end of the connecting bolt (31) sequentially fixes an end wall of the housing (4), an end washer (32), the vibration damper, the other end washer (32) and the other end wall of the fixed housing (4) and extends to the outside of the fixed housing (4). The locking nut is arranged on the outside of the other end wall of the fixed housing (4) and is sleeved on the connecting bolt (31), and the connecting bolt (31) is fastened to the fixed housing (4) through the locking nut.

3. The suspension low-frequency vibration absorber with an adjustable spacer ring according to claim 2, characterized in that: At least two threaded through holes are machined on the outer surface of the fixed housing (4), a locking bolt (5) is inserted into each threaded through hole, and the two locking bolts (5) are both threadedly connected to the fixed housing (4) for detachable connection, and the threaded end of each locking bolt (5) extends into the fixed housing (4) and is in close contact with the outer ring wall of the fixed sleeve assembly (1).

4. The suspension low-frequency vibration absorber with an adjustable spacer ring according to claim 3, characterized in that: One end of the No. 1 cylinder (11) is a plug-in end, and a plurality of plug-in rods (1101) are equidistantly arranged on the end surface of the plug-in end along the circumferential direction. The axial direction of each plug-in rod (1101) is arranged parallel to the axial direction of the No. 1 cylinder (11), and one end of each plug-in rod (1101) is fixedly connected to the plug-in end of the No. 1 cylinder (11). Two No. 1 splicing half grooves (1102) are equidistantly processed on the end surface of the plug-in end of the No. 1 cylinder (11), and each No. 1 splicing half groove (1102) is staggered with the plug-in rod (1101). The No. 1 cylinder (11) is plugged and fixed with the No. 2 cylinder (12) through the plurality of plug-in rods (1101).

5. The suspension low-frequency vibration absorber with an adjustable spacer ring according to claim 4, characterized in that: One end of the No. 2 cylinder (12) is a socket end, and a plurality of socket holes (1201) are processed equidistantly along the circumference on the end face of the socket end, and each socket hole (1201) is coaxially arranged with a plug rod (1101), and two No. 2 splicing half grooves (1202) are processed equidistantly along the circumference on the end face of the plug end of the No. 2 cylinder (12), and each No. 2 splicing half groove (1202) is correspondingly arranged with a No. 1 splicing half groove (1102), and the No. 1 cylinder (11) is spliced ​​and fixed with the No. 2 cylinder (12) through the cooperation of the plurality of plug rods (1101) and the plurality of socket holes (1201), and each No. 2 splicing half groove (1202) is spliced ​​with a No. 1 splicing half groove (1102) to form an extension channel of the adjustment end of the adjustable spacer ring unit.

6. The suspension low-frequency vibration absorber with an adjustable spacer ring according to claim 5, characterized in that: The adjustable spacer ring unit comprises two spacer rings (13) and two axial extension adjustment mechanisms, one spacer ring (13) is arranged in the plug end of the No. 1 cylinder (11), and the other spacer ring (13) is arranged in the socket end of the No. 2 cylinder (12), and the two spacer rings (13) are coaxially arranged relative to each other, the two axial extension adjustment mechanisms are arranged equidistantly between the two spacer rings (13) along the circumferential direction, and the two transmission ends on each axial extension adjustment mechanism are respectively connected to a spacer ring (13) in transmission, and the adjustment end of each axial extension adjustment mechanism extends to the outside of the fixed sleeve body through an extension channel formed by splicing a No. 1 splicing half groove (1102) and a No. 2 splicing half groove (1202) and is fixed to the outer ring wall of the fixed sleeve body.

7. The suspension low-frequency vibration absorber with an adjustable spacer ring according to claim 6, characterized in that: The axial extension adjustment mechanism includes a double-rotation screw (14), a belt transmission mechanism (16), a fixed frame (17), a locking nut (18), a rotating bolt (19) and two hanging seats (15). The double-rotation screw (14) is arranged between two spacer rings (13), and each spacer ring (13) is provided with a threaded sleeve (131) on one end close to the double-rotation screw (14). The threaded sleeve (131) is coaxially arranged with the double-rotation screw (14). One end of the threaded sleeve (131) is fixedly connected to the spacer ring (13). The other end of the threaded sleeve (131) is sleeved on the double-rotation screw (14) and is threadedly connected to the double-rotation screw (14). Two hanging seats (15) are sleeved on the middle part of the double-rotation screw (14), and the double-rotation screw (14) and the two hanging seats (15) are rotatably connected through bearings. The double-rotation screw (14) is detachably connected to the inner ring wall of the plug end of the first cylinder (11) through one hanging seat (15), and the double-rotation screw (14) is detachably connected to the inner ring wall of the socket end of the second cylinder (12) through the other hanging seat (15). The driven end of the belt transmission mechanism (16) is sleeved on the middle part of the double-rotation screw (14), and the driven end of the belt transmission mechanism (16) is located between the two hanging seats (15). The active end of the belt transmission mechanism (16) passes through the extension channel formed by the corresponding No. 1 splicing half groove (1102) and the No. 2 splicing half groove (1202) and extends to the outside of the fixed sleeve body. The fixed frame (17) is buckled on the active end of the belt transmission mechanism (16), and the two legs of the fixed frame (17) are respectively connected to the No. 1 cylinder body (11 ) and the second cylinder (12) are disassembled and connected, the threaded end of the rotating bolt (19) passes through one leg of the fixed frame (17), the active end of the belt transmission mechanism (16), the other leg of the fixed frame (17) in sequence and is inserted into the locking nut (18) located outside the fixed frame (17), and the rotating bolt (19) is threadedly connected to the locking nut (18), the rotating bolt (19) is fixedly connected to the active end of the belt transmission mechanism (16), and the rotating bolt (19) and the two legs of the fixed frame (17) are both clearance-matched.

8. The suspension low-frequency vibration absorber with an adjustable spacer ring according to claim 7, characterized in that: The double-rotation screw (14) is a split structure, and the double-rotation screw (14) includes a forward-rotation screw and a reverse-rotation screw. The forward-rotation screw and the reverse-rotation screw are coaxially arranged, and one end of the forward-rotation screw is plugged and fixed with one end of the reverse-rotation screw. A hanging seat (15) is provided on the outer surface of the end where the forward-rotation screw and the reverse-rotation screw are connected, and is detachably connected to the first barrel (11) through the hanging seat (15). The other end of the forward-rotation screw is plugged into the corresponding threaded sleeve (131). The reverse-rotating screw and the forward-rotating screw are connected by threads. Another hanging seat (15) is provided on the outer circumferential surface of one end connected to the reverse-rotating screw and the forward-rotating screw and is detachably connected to the second cylinder body (12) through the hanging seat (15). The other end of the reverse-rotating screw is inserted into the corresponding threaded sleeve (131) and is threadably connected thereto. The driven end of the belt transmission mechanism (16) is sleeved at the connection between the forward-rotating screw and the reverse-rotating screw, and the belt transmission mechanism (16) is fixedly connected to the forward-rotating screw and the reverse-rotating screw through a locking pin.

9. The suspension low-frequency vibration absorber with an adjustable spacer ring according to claim 8, characterized in that: The belt transmission mechanism (16) comprises a driving pulley, a driven pulley and a transmission belt, wherein the driving pulley is sleeved on a rotating bolt (19) and is fixedly connected to the rotating bolt (19) via a locking pin, the driven pulley is sleeved on a connection between a forward-rotating screw and a reverse-rotating screw, and is fixedly connected to the forward-rotating screw and the reverse-rotating screw via a locking pin, the transmission belt is sleeved on the driving pulley and the driven pulley, and is transmission-connected to the driven pulley via the transmission belt.

10. The suspension low-frequency vibration absorber with an adjustable spacer ring according to claim 9, characterized in that: A plurality of guide support structures are equidistantly arranged between the two spacer rings (13) along the circumferential direction, and both ends of each guide support structure are fixedly connected to a spacer ring (13) respectively. The guide support structure comprises a guide sleeve (110) and a guide plug rod (111), one end of the guide sleeve (110) is fixedly connected to the end wall of the corresponding spacer ring (13), one end of the guide plug rod (111) is fixedly connected to the end wall of the corresponding spacer ring (13), and the other end of the guide plug rod (111) is inserted into the other end of the corresponding guide sleeve (110) and is slidably connected to the corresponding guide sleeve (110).

Images