A spring vibration absorbing device with adjustable frequency and adjustable damping

Abstract

The present invention belongs to the field of vibration control technology, and specifically relates to a spring vibration absorbing device with adjustable frequency and adjustable damping; the device comprises a movable frame, a fixed frame, a guide rail, a main slider, a mass, a viscous damper, a tensioning device, a main compression spring, and a horizontal fixed groove; the movable frame comprises a movable horizontal frame, a movable bracket, and an upper flange; the fixed frame comprises a fixed horizontal frame, a fixed bracket, and a lower flange; the fixed bracket is fixedly disposed at the rear end of the fixed horizontal frame; the hinge is disposed between the movable bracket and the fixed bracket, one end of the hinge being connected to the movable bracket and the other end being connected to the fixed bracket; thus, the movable frame can rotate relative to the fixed frame using the hinge as a fulcrum; the vibration absorbing device is capable of adjusting its own natural frequency and self-damping.

Description

Technical Field

[0001] The invention belongs to the technical field of vibration control, and in particular relates to a spring vibration absorbing device with adjustable frequency and adjustable damping. Background Art

[0002] Structures are susceptible to external excitations, including wind, earthquakes, and vibrations from machinery, subways, and vehicles. Currently, various technical approaches exist to address these vibrations. Tuned mass dampers (TMDs) are one of the earliest control devices used in structures to address this issue. The control principle is that when their natural frequency is aligned with the excitation vibration of the controlled structure, they achieve effective vibration reduction. In actual engineering applications, accurately determining the excitation vibration of the controlled structure is extremely difficult due to various random factors. Furthermore, after installation, the TMD itself may experience fatigue damage over extended periods of operation, causing changes in the device's natural frequency. Furthermore, the controlled structure also experiences various unpredictable, subtle frequency shifts over time, diminishing the TMD's vibration absorption effectiveness. Summary of the Invention

[0003] The purpose of the present invention is to provide a spring vibration absorbing device with adjustable frequency and adjustable damping, which is a vibration absorbing device capable of adjusting its own natural frequency and its own damping.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0005] A spring vibration absorbing device with adjustable frequency and adjustable damping comprises a movable frame, a fixed frame, a guide rail, a main slider, a mass block, a viscous damper, a tensioning device, a main compression spring, and a horizontal fixed groove. The movable frame is composed of a movable horizontal frame, a movable bracket, and an upper flange, and the fixed frame is composed of a fixed horizontal frame, a fixed bracket, and a lower flange. The fixed bracket is fixedly arranged at the rear end of the fixed horizontal frame, and the hinge is arranged between the movable frame and the fixed bracket. One end of the hinge is connected to the movable bracket, and the other end is connected to the fixed bracket. Therefore, the movable frame can rotate relative to the fixed frame using the hinge as a fulcrum. Two cylinders are provided on the movable bracket, and one end of the side compression spring is sleeved on the cylinder of the movable bracket. Similarly, two cylinders corresponding to the movable bracket are provided on the fixed bracket, and the other end of the side compression spring is sleeved on the cylinder of the fixed bracket. During the process of the movable frame rotating relative to the fixed frame with the hinge as the fulcrum, the two side compression springs are in a compressed state throughout the rotation range.

[0006] The movable frame is disposed above the fixed frame. Upper flanges are disposed on both horizontal sides of the front end of the movable horizontal frame. Lower flanges corresponding to the upper flanges are disposed on both horizontal sides of the front end of the fixed horizontal frame. Triangular reinforcement ribs are disposed between the movable horizontal frame and the upper flanges, and triangular reinforcement ribs are disposed between the fixed horizontal frame and the lower flanges.

[0007] A tensioning device, a main compression spring, and a fixing screw are provided between the upper flange and the lower flange, respectively. Both ends of the main compression spring are sleeved on the limiting sleeve, and the limiting sleeve is respectively installed on the bottom surface of the upper flange and the upper surface of the corresponding lower flange. A through hole is processed on the upper flange, and a through hole is also processed at the corresponding position on the lower flange. The screw portion of the upper end cover of the tensioning device passes through the through hole of the upper flange and is tightened on the other side of the upper flange with a fastening combination of thick nut + thin nut + gasket. At this time, the upper plane of the upper end cover is against the lower plane of the upper flange; the screw portion of the central axis passes through the through hole of the lower flange and is tightened on the other side of the lower flange with a fastening combination of thick nut + thin nut + gasket.

[0008] The fixed frame is fixedly connected to the protected equipment or structure, and the movable frame is connected to the fixed frame on one side by a hinge. The movable frame rotates relative to the fixed frame with the hinge as a fulcrum, and a side compression spring is provided on the side where the movable frame and the fixed frame are connected by the hinge. The side compression spring provides a restoring torque to the movable frame. The main compression spring, the tension device and the viscous damper are vertically arranged between the movable frame and the fixed frame to provide vertical restoring force for the movable frame. The main compression spring, the tension device and the side compression spring are selected as needed. The guide rail and the horizontal fixed groove are arranged on the movable frame, and the horizontal fixed groove is parallel to the direction of the guide rail. One or more main sliders are arranged in the guide rail and the horizontal fixed groove, and the mass block is arranged on the main slider. The mass block can be moved on the guide rail by the main slider to realize stepless adjustment of the system stiffness.

[0009] Furthermore, two sets of viscous dampers are provided, which are respectively arranged on both sides of the spring vibration absorbing device. The viscous damper includes a cavity, an insert plate, an upper mounting plate and a lower mounting plate. The upper mounting plate is processed with two parallel T-slots b, and the lower mounting plate is also processed with two parallel T-slots c. The directions of the T-slots b and the T-slots c are parallel to each other and parallel to the guide rails; T-nuts b are placed on the T-slots b, and T-nuts c are placed on the T-slots c. The upper panel of the insert plate is fastened with bolts and T-nuts b so that the insert plate is fixedly mounted on the T-slot b, and the side panel of the cavity is fastened with bolts and T-nuts c so that the cavity is fixedly mounted on the T-slot c. The viscous damper can move on the upper mounting plate and the lower mounting plate to realize stepless adjustment of the system damping.

[0010] Furthermore, the upper mounting plate is mounted on both sides of the movable frame, and the lower mounting plate is mounted on both sides of the fixed frame.

[0011] Furthermore, the upper mounting plates are installed on both sides of the lower surface of the mass block, and the lower mounting plates are installed on both sides of the fixed frame, which not only realizes the vertical damping function, but also when the mass block reciprocates horizontally along the guide rail, the plug-in plate follows the horizontal reciprocating motion and shears the damping fluid inside the cavity, thereby generating horizontal damping force and dissipating vibration energy.

[0012] Furthermore, the inner cavity of the cavity is filled with viscous damping fluid, and the inserting plate portion of the inserting plate is inserted into the inner cavity of the cavity and immersed in the viscous damping fluid.

[0013] Furthermore, the tensioning device includes an upper end cover, a pressure plate, an outer cylinder, a compression spring, a lower end cover and a central axis. The cross-section of the outer cylinder is semicircular, and the lower plane of the upper end cover is bolted to the upper end surfaces of the two outer cylinders. Relative vertical guide gaps are formed between the two outer cylinders of the tensioning device; the outer shape of the pressure plate is similar to a pie shape, and relative bosses are processed on both sides thereof, and the bosses are embedded between the vertical guide gaps. The outer shape of the lower end cover is circular, and the lower end cover is bolted to the lower end surfaces of the two outer cylinders. The central axis passes through the lower end cover and is fixedly connected to the lower plane of the pressure plate by bolts. A compression spring is provided on the outer surface of the central axis on the inner part of the outer cylinder.

[0014] Furthermore, a main connecting member is provided between the mass block and the main slider, a secondary slider is provided on the guide rail, a secondary connecting member is provided on the secondary slider, and a horizontal tension spring is provided between the main connecting member and the secondary connecting member to form a balancing force.

[0015] Furthermore, the main connecting member is provided with a through hole a with a sinking platform, the secondary connecting member is provided with a through hole b with a sinking platform, the horizontal fixing groove is provided with a T-slot a, the direction of the T-slot a is parallel to the direction of the guide rail, and a T-nut a is placed on the T-slot a. Bolts are passed through the through holes of the through hole a with a sinking platform and the through hole b with a sinking platform from top to bottom and are fastened with the T-nut a, so that the main connecting member and the secondary connecting member are fixedly connected to the horizontal fixing groove, and indirectly the main connecting member and the secondary connecting member are fixed on the guide rail and cannot slide freely.

[0016] Furthermore, the secondary connecting member is fixed to the horizontal fixing slot, the main connecting member is not fixedly connected to the horizontal fixing slot, and the mass block and the horizontal spring constitute a horizontal vibration absorbing device, which absorbs external vibration energy to achieve vibration reduction by resonating with the external excitation frequency in this direction through its own inherent horizontal frequency.

[0017] Furthermore, there are two side compression springs, both of which are compression springs, and the side compression springs are arranged on the upper and lower sides of the hinge.

[0018] Compared with the prior art, the present invention has at least one of the following beneficial effects:

[0019] This invention proposes a vibration absorption device with adjustable natural frequency and damping. The natural frequency can be adjusted by moving the mass or adjusting spring parameters. Damping is adjusted by varying the damping position, thereby changing the wiper's speed. This device simultaneously reduces vibration in both vertical and horizontal directions. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a structural diagram of Example 1 of the present invention;

[0021] Figure 2 For Example 1 Figure 1 ;

[0022] Figure 3 For Example 1 Figure 2 ;

[0023] Figure 4 This is a schematic diagram of the guide rail and horizontal fixing groove structure of Example 1;

[0024] Figure 5 for Figure 4 Side view of;

[0025] Figure 6 It is a structural diagram of the tension device;

[0026] Figure 7 This is a schematic diagram of the exploded structure of the tension device;

[0027] Figure 8 is a schematic diagram of the viscous damper structure;

[0028] Figure 9 This is a schematic diagram of the transportation and installation structure of the vibration absorption device;

[0029] Figure 10 This is a structural diagram of Example 2;

[0030] Figure 11 This is a stereogram of Example 2;

[0031] Figure 12 This is a diagram showing the working principle of the invented device.

[0032] In the figure, 1-mass block, 2-main slider, 3-guide rail, 4-movable frame, 4.1-movable horizontal frame, 4.2-movable bracket, 4.3-upper flange, 5-main connecting piece, 6-hinge, 7-fixed frame, 7.1-fixed horizontal frame, 7.2-fixed bracket, 7.3-lower flange, 8-viscous damper, 8.1-cavity, 8.2-insertion plate, 8.3-upper mounting plate, 8.4-lower mounting plate, 9-tension device, 9.1-upper end cover, 9.2-pressure plate, 9.3-outer cylinder, 9.4-compression spring, 9.5-lower end cover, 9.6-center axis, 10-main compression spring, 11-transport screw, 12-side compression spring, 13-secondary slider, 14-secondary connecting piece, 15-horizontal spring, 16-horizontal fixing groove. DETAILED DESCRIPTION

[0033] like Figure 1-12 In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0034] Example 1

[0035] As attached Figure 1 -Attached Figure 3 As shown, a spring vibration absorbing device with adjustable frequency and adjustable damping includes a movable frame 4, a fixed frame 7, a guide rail 3, a main slider 2, a mass block 1, a viscous damper 8, a tension device 9, a main compression spring 10 and a horizontal fixing groove 16.

[0036] The movable frame 4 is composed of a movable horizontal frame 4.1, a movable bracket 4.2 and an upper flange 4.3.

[0037] There are two guide rails 3, which are installed in parallel on both sides of the upper movable horizontal frame 4.1; there are four main sliders 2, two of which are installed on the guide rails 3 on one side, and the other two main sliders 2 are installed on the guide rails 3 on the other side. The main sliders 2 can slide freely along the installation direction of the guide rails 3.

[0038] The main connecting member 5 is simultaneously mounted on the four main sliders 2. The mass block 1 is fixedly mounted on the main connecting member 5, so that the mass block 1 can slide freely on the guide rail 3 through the main sliders 2.

[0039] As attached Figure 4 and Figure 5As shown, the horizontal fixing groove 16 is disposed between the guide rails 3 and is machined with a T-slot a, which is parallel to the guide rails 3 and is occupied by a T-nut a. A through-hole is machined in the main connecting member 5. Bolts are passed through the through-holes from top to bottom and fastened with the T-nut a, thereby securing the main connecting member 5 to the horizontal fixing groove 16 and indirectly securing the mass 1 to the guide rails 3, preventing it from sliding freely.

[0040] As attached Figure 1 -Attached Figure 5 As shown, the movable bracket 4.2 is fixedly arranged at the rear end of the movable horizontal frame 4.1. Figure 1 on the right side.

[0041] The fixed frame 7 is composed of a fixed horizontal frame 7.1, a fixed bracket 7.2 and a lower flange 7.3. The fixed bracket 7.2 is fixedly arranged at the rear end of the fixed horizontal frame 7.1. Figure 1 on the right side.

[0042] The hinge 6 is disposed between the movable bracket 4.2 and the fixed bracket 7.2. One end of the hinge 6 is connected to the movable bracket 4.2, and the other end is connected to the fixed bracket 7.2. Therefore, the movable frame 4 can rotate relative to the fixed bracket 7 with the hinge 6 as a fulcrum. There are two side compression springs 12, both of which are compression springs. The side compression springs 12 are disposed on the upper and lower sides of the hinge 6. The movable bracket 4.2 is provided with two cylinders. One end of the side compression spring 12 is sleeved on the cylinder of the movable bracket 4.2. Similarly, the fixed bracket 7.2 is provided with two cylinders corresponding to the movable bracket 4.2. The other end of the side compression spring 12 is sleeved on the cylinder of the fixed bracket 7.2. During the process of the movable frame 4 rotating relative to the fixed bracket 7 with the hinge 6 as a fulcrum, within the rotation range, both side compression springs 12 are in a compressed state throughout the entire range of rotation.

[0043] The movable frame 4 is arranged on the fixed frame 7, and the front end of the movable horizontal frame 4.1 (attached Figure 1 Upper flanges 4.3 are provided on both horizontal sides (on the left side of the movable horizontal frame 7.1). Lower flanges 7.3 corresponding to upper flanges 4.3 are provided on both horizontal sides of the front end (on the left side of FIG. 1 ). Triangular reinforcement ribs are also provided between the movable horizontal frame 4.1 and the upper flanges 4.3, and between the fixed horizontal frame 7.1 and the lower flanges 7.3.

[0044] A tensioning device 9, a main compression spring 10, and a fixing screw 11 are respectively provided between the upper flange 4.3 and the lower flange 7.3. Both ends of the main compression spring 10 are sleeved on the limiting sleeves, which are respectively installed on the bottom surface of the upper flange 4.3 and the upper surface of the corresponding lower flange 7.3. A through hole is machined on the upper flange 4.3, and a through hole is also machined at the corresponding position on the lower flange 7.3. The screw portion of the upper end cover 9.1 of the tensioning device 9 passes through the through hole of the upper flange 4.3 and is tightened on the other side of the upper flange 4.3 using a fastening combination of a thick nut + a thin nut + a gasket. At this time, the upper plane of the upper end cover 9.1 is against the lower plane of the upper flange 4.3; the screw portion of the central shaft 9.6 passes through the through hole of the lower flange 7.3 and is tightened on the other side of the lower flange 7.3 using a fastening combination of a thick nut + a thin nut + a gasket.

[0045] As attached Figure 6 and attached Figure 7 As shown, the tensioning device 9 is composed of an upper end cover 9.1, a pressure plate 9.2, two outer cylinders 9.3, a compression spring 9.4, a lower end cover 9.5 and a central shaft 9.6.

[0046] The outer cylinder 9.3 has a semicircular cross-section. The lower surface of the upper end cap 9.1 is bolted to the upper end surfaces of the two outer cylinders 9.3, forming a vertical guide gap between the two tensioning device outer cylinders 9.3. The pressure plate 9.2 has a circular shape, with opposing bosses machined on both sides, which fit between the vertical guide gaps. The lower end cap 9.5 has a circular shape and is bolted to the lower end surfaces of the two outer cylinders 9.3. The central shaft 9.6 passes through the lower end cap 9.5 and is fixedly bolted to the lower surface of the pressure plate 9.2.

[0047] As attached Figure 8 As shown, there are two sets of viscous dampers 8, which are respectively arranged on both sides of the spring vibration absorbing device. The viscous damper 8 consists of a cavity 8.1, an inserting plate 8.2, an upper mounting plate 8.3 and a lower mounting plate 8.4.

[0048] The upper mounting plate 8.3 is processed with two parallel T-slots b, and the lower mounting plate 8.4 is also processed with two parallel T-slots c, the T-slots b and the T-slot c are parallel to each other and parallel to the guide rail 3; T-nuts b are placed on the T-slots b, and T-nuts c are placed on the T-slots c; the upper mounting plate 8.3 is installed on both sides of the movable horizontal frame 4.1, and the lower mounting plate 8.4 is installed on both sides of the fixed horizontal frame 7.1; the upper panel of the insert plate 8.2 is fastened with bolts and T-nuts b so that the insert plate 8.2 is fixedly mounted on the T-slot b, and the side panels of the cavity 8.1 are fastened with bolts and T-nuts c so that the cavity 8.1 is fixedly mounted on the T-slot c.

[0049] The inner cavity of the cavity 8.1 is filled with a viscous damping fluid. The inserting plate portion of the inserting plate 8.2 is inserted into the inner cavity of the cavity 8.1 and immersed in the viscous damping fluid. The inserting plate 8.2 and the cavity 8.1 form a damping assembly. Under the action of the movable frame 4, the inserting plate 8.2 performs reciprocating vertical motion in the cavity 8.1, shearing the damping fluid. The damping fluid absorbs kinetic energy and converts it into heat energy to dissipate vibration energy.

[0050] As attached Figure 9 As shown, when the vibration absorbing device is transported and installed, the transport bolts 11 pass through the upper flange 4.3 and the lower flange 7.3 at the same time and are fastened with nuts at the top and bottom. After the vibration absorbing device is installed, the transport bolts 11 are removed and the spring vibration absorbing device enters the working state.

[0051] This embodiment primarily addresses vertical vibration. It utilizes the mass of the movable frame 4, an optional main compression spring 10, a tensioning device 9, side compression springs 12, and a damper to form a vertical vibration absorption device. This device achieves vibration reduction by absorbing external vibration energy through resonance between its natural frequency and the external excitation frequency. In Example 1, the fixed frame 7 is fixedly mounted on the protected equipment or structure. After the movable frame 4 resonates with the external excitation frequency, it rotates relative to the fixed frame 7 using the hinge 6 as a fulcrum, with the other end supported by the main compression spring 10.

[0052] In order to realize the adjustable stiffness of the device, the working principle of the device of the present invention is as follows: Figure 12 As shown, the mass m can slide on the rigid rod to adjust the system frequency.

[0053] The free vibration equation of this device is:

[0054]

[0055] Where k is the spring stiffness at point B. The movement of mass m enables stepless adjustment of the system stiffness.

[0056] From the above formula, we can know that the circular frequency of the device is:

[0057]

[0058] From the above equation, we can see that by changing the position of the mass, we can adjust the frequency of the device. Similarly, by changing the position of the damper, we can also adjust the damping.

[0059] The damping assembly composed of the insert plate 8.2 and the cavity 8.1, the insert plate 8.2 under the action of the movable frame 4 reciprocates vertically in the cavity 8.1 to shear the damping fluid. The damping fluid absorbs kinetic energy and converts it into heat energy to dissipate vibration energy. The damping assembly provides a damping force F = c × v to the vibration absorbing device. α, c is the damping coefficient, α is the damping exponent, and v is the speed at which the insert plate 8.2 reciprocates inside the cavity 8.1.

[0060] Insert plate 8.2 is mounted on T-slot b of upper mounting plate 8.3, and cavity 8.1 is mounted on T-slot c of lower mounting plate 8.4, allowing it to move forward and backward along the T-slot. Simultaneously, one end of movable frame 4 rotates relative to fixed frame 7 using hinge 6 as a fulcrum. The damping assembly's operating radius around hinge 6 is r, and the rotational speed of movable frame 4 is angular velocity ω. The vertical velocity of insert plate 8.2's reciprocating motion within cavity 8.1 is v = r × ω, resulting in a damping force F = c × (r × ω). α ,From the above formula, we can see that by moving the damping component forward and backward, the radius r can be changed to adjust the damping force.

[0061] In this embodiment, the positions of the mass block 1 and the damping assembly can be adjusted according to the excitation effect in the actual scenario, so as to achieve adjustable natural frequency and adjustable damping force.

[0062] The tension device 9 can provide the movable frame 4 with sufficient downward restoring force in the vertical direction; the two side compression springs 12 are distributed on the upper and lower sides of the hinge 6. When the movable frame 4 rotates relative to the fixed frame 7 with the hinge 6 as the fulcrum, the two side compression springs 12 provide restoring torque to the movable bracket 4.2 under different extension and contraction amounts.

[0063] Example 2

[0064] Based on Example 1, the following modifications can be made:

[0065] As attached Figure 10 and attached Figure 11 As shown, there are four auxiliary sliders 13, two of which are installed on the guide rail 3 on one side and are arranged on both sides of the main slider 2, and the other two auxiliary sliders 13 are installed on the guide rail 3 on the other side and are arranged on both sides of the other two main sliders 2.

[0066] Two secondary connectors 14 are mounted on either side of the main connector 5, with one secondary connector 14 mounted on both secondary sliders 13 on one side. The other secondary connector 14 is mounted on both secondary sliders 13 on the other side. Therefore, the two secondary connectors 14 can slide freely on the guide rail 3 via the secondary sliders 13.

[0067] The sides of the main connector 5 and the secondary connector 14 are provided with bosses with circular holes. Four horizontal tension springs 15 are arranged parallel to the guide rail 3. Two of the horizontal tension springs 15 are positioned between one of the secondary connectors 14 and one side of the main connector 5, and the other two are positioned between another secondary connector 14 and the other side of the main connector 5. All four horizontal tension springs 15 are connected using round hooks at their ends.

[0068] Three through holes are respectively processed on the two secondary connecting members 14. Bolts are passed through the through holes on the secondary connecting members 14 from top to bottom and fastened with the T-nuts a, so that the secondary connecting member 2 is fixedly connected to the horizontal fixing groove 16, and indirectly fixes the secondary connecting member 2 on the guide rail 3 and cannot slide freely. At this time, the main connecting member 5 is not fixedly connected to the horizontal fixing groove 16.

[0069] As attached Figure 8 and attached Figure 9 The upper mounting plates 8 . 3 of the two sets of viscous dampers 8 are fixedly connected to the lower plane of the mass block 1 .

[0070] Example 2 can simultaneously handle micro-amplitude high-frequency vibrations in both vertical and horizontal directions (guide rail direction), that is, the vibration absorption device can not only achieve vibration reduction of vertical vibration in Example 1, but also achieve vibration reduction in this direction (guide rail direction) by reciprocating motion along the guide rail 3 after the mass block 1 resonates with the horizontal external excitation frequency.

[0071] In this embodiment, the insert plate 8.2 is mounted below the mass block via the upper mounting plate 8.3. In addition to achieving the vertical damping function described in Example 1, when the mass block 1 reciprocates along the guide rail 3, the insert plate 8.2 follows suit by performing horizontal reciprocating motion, shearing the damping fluid within the cavity 8.1, thereby generating a horizontal damping force and dissipating vibration energy.

[0072] This embodiment is mainly used to solve the problem of micro-high-frequency vibration in the vertical and horizontal directions. The vertical vibration absorption mechanism is the same as that in Example 1, and the horizontal vibration reduction direction is in the same direction as the guide rail 3. The two auxiliary connecting parts 14 are fixed to the horizontal fixing groove 16, and the mass block 1 and the horizontal spring 15 form a horizontal vibration absorption device, which absorbs external vibration energy to achieve vibration reduction through resonance between its own natural horizontal frequency and the external excitation frequency in this direction. In Example 2, the vibration absorption device can not only achieve the vibration reduction of vertical vibration in Example 1, but also the mass block 1 resonates with the horizontal external excitation frequency and reciprocates along the guide rail 3.

[0073] In Example 2, the insert plate 8.2 is installed under the mass block via the upper mounting plate 8.3. In addition to achieving the vertical damping function in Example 1, when the mass block 1 reciprocates along the guide rail 3, the insert plate 8.2 follows the horizontal reciprocating motion and shears the damping fluid inside the cavity 8.1, thereby generating a horizontal damping force and dissipating vibration energy.

[0074] Although the present invention has been described herein with reference to a number of illustrative embodiments thereof, it will be understood that numerous other modifications and implementations may be devised by those skilled in the art that fall within the scope and spirit of the principles disclosed herein. More specifically, within the scope of the present disclosure, the drawings, and the claims, numerous variations and modifications may be made to the components and / or layout of the subject combination arrangement. In addition to variations and modifications to the components and / or layout, other uses will also be apparent to those skilled in the art.

Claims

1. A spring vibration absorbing device with adjustable frequency and adjustable damping, characterized in that: The invention comprises a movable frame (4), a fixed frame (7), a guide rail (3), a main slider (2), a mass block (1), a viscous damper (8), a tension device (9), a main compression spring (10) and a horizontal fixed groove (16), wherein one side of the movable frame (4) and the fixed frame (7) are connected by a hinge (6), and a side compression spring (12) is provided on the side where the movable frame (4) and the fixed frame (7) are connected by the hinge (6), the main compression spring (10), the tension device (9) and the viscous damper (8) are vertically provided between the movable frame (4) and the fixed frame (7), the guide rail (3) and the horizontal fixed groove (16) are provided on the movable frame (4), and the horizontal fixed groove (16) is parallel to the direction of the guide rail (3), the main slider (2) is provided in the guide rail (3) and the horizontal fixed groove (16), and the mass block (1) is provided on the main slider (2); Two sets of viscous dampers (8) are provided, which are respectively provided on both sides of the spring vibration absorbing device. The viscous damper (8) includes a cavity (8.1), an insert plate (8.2), an upper mounting plate (8.3) and a lower mounting plate (8.4). The upper mounting plate (8.3) is processed with two parallel T-slots b, and the lower mounting plate (8.4) is also processed with two parallel T-slots c. The directions of the T-slots b and the T-slots c are parallel to each other and parallel to the guide rail (3); a T-nut b is placed on the T-slot b, and a T-nut c is placed on the T-slot c. The upper panel of the insert plate (8.2) is fastened with bolts and T-nuts b so that the insert plate (8.2) is fixedly mounted on the T-slot b. The side panel of the cavity (8.1) is fastened with bolts and T-nuts c so that the cavity (8.1) is fixedly mounted on the T-slot c. The tensioning device (9) comprises an upper end cover (9.1), a pressure plate (9.2), an outer cylinder (9.3), a compression spring (9.4), a lower end cover (9.5) and a central shaft (9.6). The cross section of the outer cylinder (9.3) is semicircular. The lower plane of the upper end cover (9.1) is bolted to the upper end faces of the two outer cylinders (9.3). A relative vertical guide gap is formed between the two tensioning device outer cylinders (9.3). The outer end of the pressure plate (9.2) is The shape is a circular cake, and opposite bosses are machined on both sides. The bosses are embedded between the vertical guide slits. The outer shape of the lower end cover (9.5) is annular. The lower end cover (9.5) is bolted to the lower end faces of the two outer cylinders (9.3). The central axis (9.6) passes through the lower end cover (9.5) and is fixedly connected to the lower plane of the pressure plate (9.2) by bolts. The outer surface of the central axis (9.6) is provided with a compression spring (9.4) on the inner part of the outer cylinder (9.3).

2. The spring vibration absorbing device with adjustable frequency and adjustable damping according to claim 1, characterized in that: The upper mounting plate (8.3) is mounted on both sides of the movable frame (4), and the lower mounting plate (8.4) is mounted on both sides of the fixed frame (7).

3. The spring vibration absorbing device with adjustable frequency and adjustable damping according to claim 1, characterized in that: The upper mounting plate (8.3) is mounted on both sides of the lower surface of the mass block (1), and the lower mounting plate (8.4) is mounted on both sides of the fixing frame (7).

4. The spring vibration absorbing device with adjustable frequency and adjustable damping according to claim 1, characterized in that: The inner cavity of the cavity (8.1) is filled with viscous damping liquid, and the inserting plate portion of the inserting plate (8.2) is inserted into the inner cavity of the cavity (8.1) and immersed in the viscous damping liquid.

5. The spring vibration absorbing device with adjustable frequency and adjustable damping according to claim 1, characterized in that: A main connecting member (5) is provided between the mass block (1) and the main slider (2), a secondary slider (13) is provided on the guide rail (3), a secondary connecting member (14) is provided on the secondary slider (13), and a horizontal tension spring (15) is provided between the main connecting member (5) and the secondary connecting member (14).

6. The spring vibration absorbing device with adjustable frequency and adjustable damping according to claim 5, characterized in that: The main connecting member (5) is provided with a through hole a with a sinking platform, the auxiliary connecting member (14) is provided with a through hole b with a sinking platform, the horizontal fixing groove (16) is provided with a T-shaped slot a, the direction of the T-shaped slot a is parallel to the direction of the guide rail (3), a T-shaped nut a is placed on the T-shaped slot a, and the through hole a with a sinking platform and the through hole b with a sinking platform are passed through the through holes from top to bottom with screws and fastened with the T-shaped nut a so that the main connecting member (5) and the auxiliary connecting member (14) are fixedly connected to the horizontal fixing groove (16).

7. The spring vibration absorbing device with adjustable frequency and adjustable damping according to claim 1, characterized in that: The secondary connecting member (14) is fixed to the horizontal fixing groove (16), and the main connecting member (5) is not fixedly connected to the horizontal fixing groove (16).

8. The spring vibration absorbing device with adjustable frequency and adjustable damping according to claim 1, characterized in that: There are two side compression springs (12), both of which are compression springs. The two side compression springs (12) are arranged on the upper and lower sides of the hinge (6).

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