Viscous damper

Abstract

The viscous damper comprises a shell, a plugging block, a piston rod and a sliding block, the plugging block is fixedly arranged at the middle end of the interior of the shell, the piston rod penetrates through the left side of the exterior of the shell in a sliding mode, and the sliding block is fixedly arranged on the right side of the piston rod. Through the design of a switching function, the discharging holes and the mounting holes with different diameters can be in a one-to-one correspondence state only by rotating the driving assembly, and then damping parameters are changed, so that the working difficulty and the working intensity of workers are reduced through the device. According to the utility model, through the design of a guiding function, the mutual overlapping state of the discharging holes and the mounting holes with different diameters can be accurately controlled and processed, in addition, through the design of a locking function, the mutual overlapping state of the discharging holes and the mounting holes can be locked and processed, and the stabilizing effect after the mutual overlapping of the discharging holes and the mounting holes is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of dampers, in particular to a viscous damper. Background Art

[0002] Viscous damper: It is made according to the principle that fluid movement, especially when the fluid passes through the throttling hole, will produce throttling resistance. It is a damper related to the speed of piston movement. It is widely used in high-rise buildings, bridges, seismic retrofitting of building structures, anti-vibration of industrial pipeline equipment, military industry and other fields. The basic structure of the traditional damper is to set a small hole on the piston. During the working process, the damping medium is squeezed to flow through the small hole on the piston at a high speed. Energy loss is generated during the flow of the damping medium, and the external kinetic energy is converted into the thermal energy of the damping medium, thereby reducing the damage to the structure caused by large loads such as earthquakes and strong winds. For the above-mentioned traditional viscous dampers, since the small holes are all set on the piston, once the product is assembled, the damping parameters including damping force, damping coefficient, speed index, etc. are determined. If it is found that the damping parameters are set unreasonably during use, or the structure itself changes and the damping parameters need to be changed, it must be dismantled as a whole and the piston must be replaced in the factory to achieve the adjustment of the product damping parameters. Obviously, this method of adjusting the damping parameters is very complicated, time-consuming and labor-intensive, and has high maintenance costs, and has certain limitations.

[0003] The patent name of the announcement number "CN110374220B" is: A viscous damper. The device in the public document changes the size of the damping parameter by replacing the damping channel. This replacement method is time-consuming and labor-intensive, and increases the work intensity and difficulty of the staff. Based on this, the utility model designs a viscous damper to solve the above problem. Utility Model Content

[0004] The purpose of the utility model is to provide a viscous damper to solve the problems raised by the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a viscous damper, comprising a shell, a blocking block, a piston rod and a slider, the blocking block is fixedly arranged at the middle end inside the shell, the piston rod slides through the left side outside the shell, the slider is fixedly arranged at the right side of the piston rod, a mounting hole is integrally arranged inside the blocking block, and clearance holes are integrally arranged on the upper and lower sides of the middle end inside the shell, a discharge assembly is sleeved on the outside of the shell, a drive assembly is arranged inside the shell, the discharge assembly comprises a sealing sleeve slidably sleeved on the outside of the shell, a telescopic hose is fixedly penetrated on the left side outside the sealing sleeve, and the other end of the telescopic hose is fixedly penetrated on the left side outside the shell, a plurality of discharge holes are integrally arranged from left to right inside the sealing sleeve, and the diameters of the plurality of discharge holes from left to right are in an increasing design, a connecting plate fixedly arranged on the right side of the sealing sleeve slides through the right side of the shell, the drive assembly comprises a rotating rod transferred to the right side inside the shell, and the rotating rod thread penetrates the connecting plate, and the worm screw that rotates and penetrates on the right side of the top of the shell is in a gear meshing design with the worm wheel fixedly sleeved on the outside of the rotating rod.

[0006] Furthermore, the left end of the rotating rod is connected to the right end of the blocking block, and a first spring is fixed between the upper and lower ends of the shell and the sliding block.

[0007] Furthermore, a second spring is fixedly provided between the upper and lower ends of the left side of the outer portion of the blocking block and the sliding block, and the rebound force of the second spring is smaller than the rebound force of the first spring.

[0008] Furthermore, avoidance holes are integrally provided at the upper and lower ends of the right side of the shell, and the avoidance holes are through-holes, and the avoidance holes are sleeved on the outside of the connecting plate.

[0009] Furthermore, an indicator pin is fixedly provided on the upper side of the rear end of the outer wall of the connecting plate, and a plurality of indicator grooves are integrally provided on the right side of the top end inside the shell.

[0010] Furthermore, a plurality of sockets are fixedly provided on the right side of the top end of the shell, and the plurality of sockets are distributed around the axis of the worm as the center.

[0011] Furthermore, a mounting plate is fixedly sleeved on the upper outer end of the worm, a circular plate arranged on the upper end of the mounting plate is slidably sleeved on the outside of the worm, and latches fixed on the left and right sides of the bottom of the circular plate slide through the mounting plate.

[0012] Furthermore, a handle is fixedly provided on the top of the circular plate, a third spring is sleeved on the outside of the latch, the top of the third spring is fixedly connected to the bottom of the circular plate, and the bottom of the third spring is fixedly connected to the top of the mounting plate.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. The utility model adopts the design of switching function, and the discharge holes and mounting holes of different diameters can be placed in a one-to-one correspondence with each other simply by rotating the drive assembly, thereby changing the damping parameters. It can be seen that by using the device in this application, the work difficulty and work intensity of the staff are reduced.

[0015] 2. The utility model can accurately control the overlapping state of discharge holes and mounting holes of different diameters through the design of the guiding function. In addition, through the design of the locking function, the overlapping state of the discharge holes and mounting holes can be locked, thereby improving the stability effect after the discharge holes and mounting holes overlap. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 A front perspective view of a viscous damper of the utility model;

[0018] Figure 2 A three-dimensional diagram of the internal structure of a viscous damper of the utility model;

[0019] Figure 3 A three-dimensional diagram of the mounting sleeve and the connecting plate;

[0020] Figure 4 It is a three-dimensional diagram of the worm wheel and the worm;

[0021] Figure 5 This is an exploded perspective view of the worm and the circular plate.

[0022] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0023] 1-housing, 2-sealing block, 3-piston rod, 4-slider, 5-mounting hole, 6-allowance hole, 7-discharge assembly, 8-driving assembly, 701-sealing sleeve, 702-telescopic hose, 703-discharge hole, 704-connecting plate, 801-rotating rod, 802-worm, 803-worm wheel, 9-first spring, 10-second spring, 11-avoidance hole, 12-indicator pin, 13-indicator groove, 14-jack, 15-mounting plate, 16-round plate, 17-latch pin, 18-handle, 19-third spring. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Example 1

[0025] like Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, the device includes a shell 1, a blocking block 2, a piston rod 3 and a slider 4. The blocking block 2 is fixedly arranged at the middle end of the shell 1, the piston rod 3 slides through the left side of the shell 1, the slider 4 is fixedly arranged on the right side of the piston rod 3, a mounting hole 5 is integrally arranged inside the blocking block 2, and clearance holes 6 are integrally arranged on the upper and lower sides of the middle end of the shell 1. A discharge assembly 7 is sleeved on the outside of the shell 1, and a driving assembly 8 is arranged inside the shell 1. The discharge assembly 7 includes a sealing sleeve 701 slidably sleeved on the outside of the shell 1, and a telescopic hose 702 is fixedly penetrated on the left side of the outside of the sealing sleeve 701, and the telescopic hose 702 is fixedly penetrated. The other end of the tube 702 is fixedly passed through the left side of the outer shell 1. A plurality of discharge holes 703 are integrally arranged inside the sealing sleeve 701 from left to right. The diameters of the plurality of discharge holes 703 are designed to increase from left to right. A connecting plate 704 fixed on the right side of the sealing sleeve 701 slides through the right side of the shell 1. The driving assembly 8 includes a rotating rod 801 connected to the right side of the inner shell 1, and the rotating rod 801 is threadedly passed through the connecting plate 704. The worm 802 that rotates and passes through the right side of the top of the shell 1 is designed to be in gear meshing with the worm wheel 803 fixedly sleeved on the outside of the rotating rod 801.

[0026] First, damping medium is arranged on the left and right sides of the slider 4. When the piston rod 3 is squeezed by external force, the piston rod 3 pushes the slider 4 together with the medium on the right side of the slider 4 through the mounting hole 5, the yield hole 6, the discharge hole 703 and then the telescopic hose 702 to the left side of the slider 4, so as to achieve the damping effect of the external force. When the staff needs to change the damping parameters, the staff rotates the worm 802, and the worm 802 controls the worm wheel 803 to drive the rotating rod 801 to rotate. Through the threaded transmission of the rotating rod 801 and the connecting plate 704, the connecting plate 704 drives the sealing sleeve 701 to move along the direction of the shell 1, so that the discharge holes 703 and the mounting holes 5 of different diameters are in a state of overlap, so as to control the flow rate of the damping medium delivery and switch the damping parameters. Example 2

[0027] like Figure 1 , Figure 2 , Figure 5As shown, the left end of the rotating rod 801 is connected to the right end of the blocking block 2, a first spring 9 is fixedly arranged between the upper and lower ends of the shell 1 and the slider 4, and a second spring 10 is fixedly arranged between the upper and lower ends of the left side of the blocking block 2 and the slider 4. The rebound force of the second spring 10 is less than the rebound force of the first spring 9. The upper and lower ends of the right side of the shell 1 are integrally provided with avoidance holes 11. The avoidance holes 11 are through-holes. The avoidance holes 11 are sleeved on the outside of the connecting plate 704. An indicator pin 12 is fixedly arranged on the upper side of the rear end of the outer wall of the connecting plate 704. A plurality of indicator grooves 13 are integrally arranged on the right side of the top of the shell 1. A number of sockets 14 are fixedly provided on the right side of the top of the part, and the sockets 14 are designed to be distributed around the axis of the worm 802. A mounting plate 15 is fixedly sleeved on the upper end of the outside of the worm 802. A circular plate 16 arranged on the upper end of the mounting plate 15 is slidably sleeved on the outside of the worm 802. Pins 17 fixed on the left and right sides of the bottom of the circular plate 16 slide through the mounting plate 15. A handle 18 is fixed on the top of the circular plate 16. A third spring 19 is sleeved on the outside of the pin 17. The top of the third spring 19 is fixedly connected to the bottom of the circular plate 16, and the bottom of the third spring 19 is fixedly connected to the top of the mounting plate 15.

[0028] According to the operation method in Example 1, when the connecting plate 704 drives the sealing sleeve 701 to move along the lateral direction of the housing 1, the indicator pin 12 points to the indicator slot 13, so that the staff can know which diameter of the discharge hole 703 and the mounting hole 5 are currently in a state of mutual overlap. In addition, before the staff rotates the worm 802, the handle 18 is first pulled upward, and the handle 18 drives the circular plate 16 together with the latch 17 to disengage from the socket 14, and the third spring 19 is deformed, and then the handle 18 is rotated, so that the handle 18 drives the circular plate 16 together with the mounting plate 15 and the worm 802 to rotate until the discharge hole 703 to be used is reached. After the material hole 703 overlaps with the mounting hole 5, the handle 18 is released by hand, and the latch 17 is inserted into the corresponding insertion hole 14 through the rebound force of the third spring 19, thereby locking the state in which the material discharge hole 703 overlaps with the mounting hole 5. When external force squeezes the piston rod 3, the piston rod 3 drives the slider 4 together with the first spring 9 to deform, and the slider 4 controls the second spring 10 to reset. When the external force on the piston rod 3 is eliminated, the rebound force of the first spring 9 causes the slider 4 to pull the second spring 10 to deform. At this time, the rebound force of the second spring 10 relieves the force of the first spring 9 when it rebounds.

Claims

1. A viscous damper, comprising a housing (1), a blocking block (2), a piston rod (3) and a sliding block (4), characterized in that: The blocking block (2) is fixedly arranged at the middle end of the shell (1), the piston rod (3) slides through the left side of the outside of the shell (1), the slider (4) is fixedly arranged at the right side of the piston rod (3), a mounting hole (5) is integrally arranged inside the blocking block (2), and clearance holes (6) are integrally arranged at the upper and lower sides of the middle end of the shell (1), a discharge assembly (7) is sleeved on the outside of the shell (1), and a driving assembly (8) is arranged inside the shell (1), and the discharge assembly (7) includes a sealing sleeve (701) slidably sleeved on the outside of the shell (1), a telescopic hose (702) is fixedly penetrated on the left side of the outside of the sealing sleeve (701), and the telescopic hose (702) is The other end is fixedly passed through the left side of the exterior of the shell (1); a plurality of discharge holes (703) are integrally arranged inside the sealing sleeve (701) from left to right, and the diameters of the plurality of discharge holes (703) are designed to be increasing from left to right; a connecting plate (704) fixedly arranged on the right side of the sealing sleeve (701) slides through the right side of the shell (1); the driving assembly (8) comprises a rotating rod (801) connected to the right side of the interior of the shell (1), and the rotating rod (801) is threadedly passed through the connecting plate (704); a worm (802) rotating through the right side of the top of the shell (1) is designed to be in gear meshing with a worm wheel (803) fixedly arranged on the exterior of the rotating rod (801).

2. A viscous damper according to claim 1, characterized in that: The left end of the rotating rod (801) is connected to the right end of the blocking block (2) by a transfer connection, and a first spring (9) is fixedly arranged between the upper and lower ends of the housing (1) and the sliding block (4).

3. A viscous damper according to claim 1, characterized in that: A second spring (10) is fixedly arranged between the upper and lower ends of the left side of the outside of the blocking block (2) and the sliding block (4), and the rebound force of the second spring (10) is smaller than the rebound force of the first spring (9).

4. A viscous damper according to claim 1, characterized in that: Avoidance holes (11) are integrally provided at the upper and lower ends of the right side of the shell (1), the avoidance holes (11) are through-holes, and the avoidance holes (11) are sleeved on the outside of the connecting plate (704).

5. The viscous damper according to claim 1, characterized in that: An indicator pin (12) is fixedly arranged on the upper side of the rear end of the outer wall of the connection plate (704), and a plurality of indicator grooves (13) are integrally arranged on the right side of the top end inside the housing (1).

6. The viscous damper according to claim 1, characterized in that: A plurality of insertion holes (14) are fixedly provided on the right side of the top end of the housing (1), and the plurality of insertion holes (14) are distributed around the axis of the worm (802) as the center.

7. The viscous damper according to claim 1, characterized in that: A mounting plate (15) is fixedly sleeved on the upper outer end of the worm (802), a circular plate (16) arranged on the upper end of the mounting plate (15) is slidably sleeved on the outer side of the worm (802), and latches (17) fixedly arranged on the left and right sides of the bottom of the circular plate (16) slidably penetrate the mounting plate (15).

8. A viscous damper according to claim 7, characterized in that: A handle (18) is fixedly provided on the top of the circular plate (16), a third spring (19) is sleeved on the outside of the latch (17), the top of the third spring (19) is fixedly connected to the bottom of the circular plate (16), and the bottom of the third spring (19) is fixedly connected to the top of the mounting plate (15).

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