CN203498877U

CN203498877U - Vibration damping device

Info

Publication number: CN203498877U
Application number: CN201320649406.3U
Authority: CN
Inventors: 金钰欣
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-10-18
Filing date: 2013-10-18
Publication date: 2014-03-26
Anticipated expiration: 2023-10-18

Abstract

The utility model discloses a vibration damping device which is installed on a foundation or a machine. The machine is in a horizontal state, the device is composed of a plurality of springs installed at the bottom of an anvil block and a plurality of viscous dampers installed at the bottom of the anvil block, the springs are placed at the bottom of the anvil block at equal intervals, the viscous dampers are arranged at the two symmetric ends at the bottom of the circular anvil block and arranged outside the springs, the springs and the viscous dampers are directly fixed to the machine or the foundation through bolts and distributed on the periphery of the gravity center of a hammer, and deformation amounts of all the springs are the same. Compared with a traditional vibration isolation foundation, the vibration damping performance of the device is better, and vibration, caused by the forging hammer, of the surrounding environment can be reduced by over 80%. The vibration isolator can directly conduct vibration isolation on the forging hammer and a large inertia block is omitted, so that the excavation amount of the foundation is greatly reduced, and the investment is greatly saved.

Description

A kind of vibration absorber

Technical field

The utility model relates to a kind of vibration absorber for building, relates to specifically a kind of Novel forging hammer vibration absorber.

Background technology

Forging hammer in the course of the work, can produce nuisance vibration to equipment itself and surrounding environment, therefore need reduce this harm by research damping material, design vibration absorber.At present, the method for foundation of forging hammers vibration damping is a lot, if any the direct vibration insulating foundation of rubber shock absorber and floating type vibration insulating foundation etc. under the vibration insulating foundation of inertial mass spring suspended formula, the direct vibration insulating foundation of flat spring suspension, anvil.But, said method exist service behaviour poor, be easy to the shortcomings such as damage.For example, vibration-proof rubber can not absorb low frequency vibration; Air spring annex is many, and complex structure needs air source of the gas and pneumatic control system, and cost is higher; Floating foundation need to be set up air pump and water system etc.

Utility model content

The technical problems to be solved in the utility model has been to provide a kind of vibration absorber of forging hammer to the vibration of surrounding environment that reduce.

For solving the problems of the technologies described above, the utility model is realized by following scheme: a kind of vibration absorber, this device is arranged on ground, on machine, machine is in level, described device is by the some springs that are arranged on anvil block bottom, some viscous dampers form, what described spring was equidistant is placed in bottom anvil block, viscous damper is arranged on circular symmetrical two ends, anvil block bottom, and be placed in the outside of all springs, spring and viscous damper are directly fixed on machine and ground with bolt, viscous damper and groups of springs are distributed in around the center of gravity of hammer, all camber of springs are all the same.

Further, described spring is helical spring, and specification is wire diameter=10.2mm, external diameter=140.6mm, number of total coils=55.5 circle, and the spacing between circle and circle is 25mm.

Further, described viscous damper specification is ZNQ600*200.

The beneficial effects of the utility model are: the utility model is the combined elastic isolation mounting consisting of metal spring and viscous damper.Viscous damper, due to intrinsic frequency low (4Hz), so can greatly reduce the conduction of shock and vibration, reduces the harm causing by vibrating.Meanwhile, also can simplify foundation of forging hammers, reduce ground cost.By more known to this isolation mounting and traditional vibration insulating foundation, the damping property of this device is better, can reduce forging hammer to the vibration of surrounding environment more than 80%.And, utilize this vibration isolator to carry out direct vibration isolation to forging hammer, cancelled huge inertial mass and the excavation amount of ground is greatly reduced, save great amount of investment.

Accompanying drawing explanation

Fig. 1 is the utility model damping device structure schematic diagram.

Fig. 2 is that the utility model vibration absorber is placed in embodiment schematic diagram on ground.

The specific embodiment

Below in conjunction with accompanying drawing, the utility model is elaborated.

Embodiment: as shown in Figure 1 and Figure 2, a kind of vibration absorber, this device is arranged on ground, machine, machine is in level, described device consists of the some springs 3, the some viscous dampers 4 that are arranged on anvil block 1 bottom, described spring 3 is equidistant is placed in anvil block 1 bottom, viscous damper 4 is arranged on the two ends of circular anvil block 1 bottom symmetry, and be placed in the outside of all springs 3, spring 3 and viscous damper 4 use bolts are directly fixed on machine and ground, viscous damper 4 and groups of springs are distributed in around the center of gravity of hammer, and all camber of springs are all the same.Described spring 3 is helical spring, and specification is wire diameter=10.2mm, external diameter=140.6mm, number of total coils=55.5 circle, and the spacing between circle and circle is 25mm.Described viscous damper 4 specifications are ZNQ600*200.

The mechanism of viscous damper 4 mainly depends on the viscosity of the damping agent of employing, but operating ambient temperature also has impact to it.For the less indoor mechanical workshop of variations in temperature, can not consider the impact of temperature.For larger outdoor of variations in temperature, should on viscous damper 4, configure electric calorifie installation, to allow damping agent keep thermostatic control state.

The damping of viscous damper 4 can be regarded the damping of material as, and it has hysteresis characteristic.The impact force of forging hammer is larger, and damping action is larger.Use viscous damper 4 not only greatly to reduce foundation cost, and can meet the whole requirements to damping element.For example, six direction all has damping action, and damping size is adjustable, need not keep in repair, and long service life, vibration isolation efficiency is high.In addition, viscous damper 4 also can reduce the dynamic loading of spring assembly.In isolation mounting, can adjust damping amount by changing the layout of piston rod.If desired, the device that can adjust at the volley damping can also be set.

The cost of flexible foundation depends on: when 1. forging hammer is worked, be delivered to allowable force on the ground.2. the displacement allowable of forging hammer.Allowable force and displacement allowable are larger, and foundation cost is lower.

Known according to some data, the weight of flexible foundation depends on tup potential energy and basal amplitude.During forging hammer work, be delivered to the frequency that ground power depends on tup potential energy and flexible foundation system.For example, the heavy B=1.5t of known tup, potential energy E=4.2 * 104J, theoretical height of fall the natural frequency on basis is 4Hz, damped coefficient C=0.4, basal amplitude a=3mm after impacting.By looking into chart, the foundation of forging hammers weight that can calculate with viscous damper 4 is 142.5t, and viscous damping system ground is stressed is 390kN.

The perfect condition of forging hammer does not have displacement, but in fact this is impossible.Much displacements can allow, and do not have standard, depend primarily on size and the job category thereon of forging hammer.It is large that forging hammer falls energy, allows displacement also large.General amplitude is 0.1～0.4cm,, can allow 1cm under certain condition.

Generally, the cost specific rigidity basis of Hammer Isolated Base is low.Because forging hammer is large, the rigid foundation needing is also large, to absorb high dynamic load power.And adopt spring and viscous damper isolation mounting, not only make basis reduce, and owing to having reduced active force and the displacement that acts on vibration insulating foundation, basic cost has further been reduced.

By more known to this isolation mounting and traditional vibration insulating foundation, the damping property of this device is better, can reduce forging hammer to the vibration of surrounding environment more than 80%.And, utilize this vibration isolator to carry out direct vibration isolation to forging hammer, cancelled huge inertial mass and the excavation amount of ground is greatly reduced, save great amount of investment.

The foregoing is only preferred embodiment of the present utility model; not thereby limit the scope of the claims of the present utility model; every equivalent structure or conversion of equivalent flow process that utilizes the utility model manual and accompanying drawing content to do; or be directly or indirectly used in other relevant technical field, be all in like manner included in scope of patent protection of the present utility model.

Claims

1. a vibration absorber, this device is arranged on ground, on machine, machine is in level, it is characterized in that: described device is by the some springs (3) that are arranged on anvil block (1) bottom, some viscous dampers (4) form, what described spring (3) was equidistant is placed in bottom anvil block (1), viscous damper (4) is arranged on symmetrical two ends, circular anvil block (1) bottom, and be placed in the outside of all springs (3), spring (3) and viscous damper (4) are directly fixed on machine and ground with bolt, viscous damper (4) and groups of springs are distributed in around the center of gravity of hammer, all camber of springs are all the same.

2. a kind of vibration absorber according to claim 1, is characterized in that: described spring (3) is helical spring, and specification is wire diameter=10.2mm, external diameter=140.6mm, number of total coils=55.5 circle, and the spacing between circle and circle is 25mm.

3. a kind of vibration absorber according to claim 1, is characterized in that: described viscous damper (4) specification is ZNQ600*200.