CN101220844B - Vibration damping device - Google Patents

Abstract

A shock absorption device, which has stack plates, the stack plates form by stacking up internal plates which have provision numbers and have rectangle or wave pattern gap parts in circumferential parts and outside plates which have shapes different from the circumferential parts of the internal plates and arrange on the outer flank of the internal plates which have provision numbers, the internal plates abutting joint components of a shock adsorption object machine, jointing is continuously carried out in the circumferential parts of the outside plates, and jointing is discontinuously carried out in the circumferential parts of the internal plates, then the stack plates are united in the machine components, seal the provision internal plates through a close type of outside plates and the machine components, according to the structure, continuous joint (whole circumference joint) is carried out in the outside plates of the stack plates to prevent rainwater immerging and cubicles getting rusty.

Description

Vibration damping equipment

The application divides an application, the application number of its female case application: 03820847.4, and the applying date: 2003.9.2, denomination of invention: the scraper bowl of vibration damping equipment and engineering machinery

Technical field

The present invention relates to by being suppressed at vibration damping equipment and the engineering machinery scraper bowl that the vibration that takes place in the mother metal reduces the noise that sends from mother metal.

Background technique

In recent years, people require particularly to reduce noise in the residential quarter when the night work to engineering machinery, and various countries also launch respectively the rules that noise are limited in to a certain degree following relevant noise.For example, possess in use under the situation of hydraulic shovel etc. of the working machine that contains scraper bowl, wait by experiment and confirmed that its scraper bowl is the main generation source of noise.According to estimates, in the middle of the noise that sends from this working machine, about 80% is the noise that sends from scraper bowl.

Therefore, in order to suppress the vibration that particularly produces from the side plate of scraper bowl from scraper bowl and to reduce the noise that sends from side plate thus, people have attempted the vibration damping material is arranged on method on the scraper bowl.As the vibration damping material, generally use rubber, resin, pitch etc. to be called the material of viscoelasticity material.

But common engineering machinery is many directly to contact operation under the rugged environment such as sand as working machine, if therefore on the working machine of engineering machinery installation then can produce the problem of poor durability by the vibration damping material that viscoelastic material constitutes.In addition, the viscoelasticity material is generally fixed with sheet metal, but in by this sheet metal of repair by welding, can produce the problem of viscoelastic material burning.And, these viscoelastic material price height, the problem that therefore exists the expense that consumes in order to reduce noise to improve.

Therefore, the requirement of the vibration damping equipment of incombustible low price during at exploitation durability height and repairing, assignee of the present invention has developed plywood and has proposed patent application, thereby disclosed by TOHKEMY 2000-219168 communique (perhaps No. 6332509 communiques of U. S. Patent), TOHKEMY 2002-48188 communique etc.About above-mentioned communique, describe with reference to Fig. 2.The steel plate 21 (hereinafter referred to as thin plate 21) that stacked multi-disc is thin on the side plate 11 of scraper bowl and constitute plywood 20.And; also record following content; that is: the further thicker steel plate 30 (hereinafter referred to as protecting sheet 30) of overlapping protection thin plate 21 on plywood 20, and 20a (with reference to Fig. 1) around it carried out complete all fillet welding or be interrupted fillet welding or carry out the intermittent type plug welding or tighten by bolt fixing.Because plywood 20 is to be made of durability such as steel height and nonflammable low price material, therefore can solve the problem that viscoelasticity material in the past exists here.

About the mechanism that plywood 20 suppresses the vibration that produces from side plate 11 and reduces the noise that sends from side plate 11, record to some extent below with reference to Fig. 4 A and Fig. 4 B, describes in the above-mentioned communique.That is, when side plate 11 vibrations, this vibration is communicated to plywood 20, makes the thin plate 21, the 21 ' distortion that constitute plywood 20.For overlapping many thin plates 21,21 ' plywood 20, the amount of deformation of its each layer is inequality.That is, adjacent thin plate 21,21 ' radius of curvature are respectively unequal r1, r2.Therefore, displacement originally is thin plate 21,21 ' (with reference to Fig. 4 A) of x, and by the micro-strain that is caused by vibration, its displacement becomes X+ Δ X2, X+ Δ X1 respectively, thereby produces relative displacement Δ X2-Δ X1 between two thin plates 21,21 '.Relative displacement Δ X2-Δ X1 produces frictional force (hereinafter referred to as interfacial friction) between thin plate 21,21 '.Thereby the vibrational energy that produces at side plate 11 is converted to the heat energy that is caused by this interfacial friction.Thus, suppress, reduce the noise that produces from side plate 11 from the vibration of side plate 11 generations.

As seen from the above description, to generate relative displacement Δ X2-Δ X1 with the mode independent deformation shown in Fig. 4 B be the condition of vibration damping to thin plate 21,21 '.Therefore, on the contrary the performance function if two thin plates 21,21 ' are fixed as one then hinders independent deformation, thereby does not produce or seldom produce relative displacement fully, and then can not obtain or seldom obtain effectiveness in vibration suppression.

About this point,, describe with reference to Fig. 1.In the past, 20a waits by welding to be fixed on the side plate 11 around the plywood 20.But, independently to be out of shape and to obtain high effectiveness in vibration suppression in order not hinder each layer, general in the past adopted not is fixed on the structure on the side plate 11 with the inside of plywood 20 (being meant the part of only using except that the 20a on every side).But, if, then can obviously produce following problem not with the internal fixation of plywood 20.

First problem is: the thermal deformation that produces in the welding process when making, between the thin plate 21 that constitutes plywood 20,21 ', produce the gap in, between side plate 11 and plywood 20, also produce the gap.Thus, the interfacial friction that should be when side plate 11 vibration produces between thin plate 21,21 ' does not produce or produces hardly, thereby can not obtain or seldom obtain effectiveness in vibration suppression.

Second problem is: when reality is used engineering machinery, the situation of excessive external force can usually occur being subjected to as side plates 11 such as scraper bowl collision rocks.Therefore, inner not being fixed and the plywood 20 of 20a around only fixing can be subjected to the effect of this excessive external force and " heaving " easily.That is, plywood 20 separates from side plate 11, and thin plate 21,21 ' also can be separated from each other.Its result, the interfacial friction that should be when side plate 11 vibration produces between thin plate 21,21 ' does not produce or produces hardly, thereby can not obtain or seldom obtain effectiveness in vibration suppression.

By above explanation as can be known, in order to obtain high effectiveness in vibration suppression, be the best inside of fixed bed lamination 20 not, so that do not hinder the distortion of thin plate 21.But, if the inside of fixed bed lamination 20 not, thermal deformation in the time of then can be or the external force when using scraper bowl and produce " heaving " phenomenon by the scraper bowl operation, thus bring the problem that loses effectiveness in vibration suppression.

In addition, according to purposes of the size of engineering machinery, using method, operation etc., the scraper bowl of engineering machinery has a plurality of kinds.The result of present inventors by various scraper bowls inequality such as size, shape, size are tested in the time of the effect of having confirmed plywood is installed on the side plate to be obtained, also found the also different fact of its effect of difference according to the scraper bowl kind.That is,, the high scraper bowl of the shared noise component of side plate is arranged not only, the little and high scraper bowl of noise component base plate of noise component of side plate is also arranged according to the kind of scraper bowl.Can consider following countermeasure this moment.

(1) various scraper bowls are measured noise component, and the scraper bowl high to the noise component of base plate, its base plate is also implemented the noise countermeasure.

(2) to the scraper bowl of all kinds, implement the noise countermeasure at base plate without exception.

But, under the situation of above-mentioned (1) method of employing, all to carry out noise experiment etc. to each newly-designed scraper bowl, therefore very loaded down with trivial details.And under the situation of above-mentioned (2) method of employing, need also to append noise countermeasure parts to not needing the scraper bowl of noise countermeasure, therefore can cause cost to improve.

Thereby preferably elder generation clearly needs take base plate the benchmark of noise countermeasure, only the necessary minimal scraper bowl in the various scraper bowls is carried out noise experiment etc., implements the noise countermeasure with necessary minimal labour.On the other hand, when the base plate of scraper bowl is implemented the noise countermeasure, can not use the plywood that is different from side plate under many circumstances.That is, in the operation process of engineering machinery, the chance of the base plate of scraper bowl and rock generation collision etc. is many, and compares with side plate, can be subjected to excessive external force and wearing and tearing easily.Therefore, the plywood that is installed on the base plate might destroy or peel off, its poor durability.In addition, owing to mounting layer lamination on base plate, therefore can bring the problem of cost rising.

Therefore, for avoiding the generation of such situation, Yi Bian can consider on one side by improving the base plate rigidity with reinforcing material reinforcing soleplate, carrying out the method for vibration damping.That is, can consider following method: according to the kind of scraper bowl, can install as the big reinforcing material of the thickness of slab of wear plate, and increase the thickness of slab of wear plate and carry out the vibration damping of base plate in the part of the close base plate in the side plate of scraper bowl.But, if increase the thickness of slab of wear plate, then can increase the weight of scraper bowl, its result has brought harmful effect for the performance of engineering machinery.That is, if the weight of scraper bowl increases, then the moment of inertia of working machine also can correspondingly increase, and therefore needs to increase the counterweight of respective amount.If the increase counterweight then can cause the problem that the turning radius of engineering machinery increases.Increase necessary minimal weight when therefore, being preferably in the base plate of reinforcing scraper bowl.

In addition, as the effective noise of machinery and small-sized vibration damping equipment of good endurance of reducing, there is use a plurality of plates to be carried out the vibration damping equipment of the plywood of part be combined into.And, carry out part in conjunction with the time, can use bolt to tighten mode, plug welding or full week weldering (for example can be, and the 1st～8 figure) with reference to the 3rd～5 page in the above-mentioned TOHKEMY 2002-48188 communique.In using the vibration damping equipment of plywood because plywood partly combines with noise generating unit (vibration section), therefore between vibration section and plywood and the plate that constitutes plywood can produce small positional deviation or gap each other.The regular variation on one side of small positional deviation like this or gap continuously produces on one side, therefore produces friction or collision between plate repeatedly.Thereby the vibrational energy of noise generating unit will be converted to these heat energy that caused by these frictions and collision and be eliminated, and then can reduce vibration and reduce noise.

Yet, in the conventional art, have following problem.Promptly, under the situation of the side plate of the scraper bowl that is applicable to hydraulic shovel, side plate and plywood are carried out part in conjunction with the time if use bolt to tighten or mode such as plug welding, then may immerse rainwater and make and between plate, get rusty, thereby reduce damping property from the plywood section.And if in order to prevent to get rusty as side plate and plywood being carried out the mode of part combination and adopt full week welding, the plate that then constitutes plywood retrains mutually, hinders the generation of small positional deviation etc., thereby reduces damping property.

As an example of weld part that can the protective layer lamination, can consider the application to the scraper bowl side plate of plywood as shown in figure 29.For scraper bowl 101, become the both sides of the base plate 102 of C shape to weld side plate 103,103 respectively in general curved, welding panelling 104,104,105 respectively to this side plate 103,103 and base plate 102, form the opening portion of scraper bowl 101.A plurality of dipper teeths 106 are installed on panelling 105.In the end of the opposite side with the dipper teeth assembly department of base plate 102, be provided with the pin hub (pin boss) 107 of the working machine that links hydraulic shovel.Outer side surface perimembranous at side plate 103 is provided with wear plate 108 along base plate 102.At the outer side surface of side plate 103, plywood 150 to be installed by the mode of panelling 104 and wear plate 108.As shown in figure 30, plywood 150 possesses: inner panel 151 is made of the thin steel plate of stacked multi-disc; The outside plate 152 of predetermined thickness, extruding inner panel 151 is protected in the outside that is layered in inner panel 151.In the mode of driving fit roughly between the difference of side plate 103, inner panel 151 and outside plate 152, stick on the side plate 103.Between plywood 150 and wear plate 108, the weldering hole (amount of welding) as plywood 150 and wear plate 108 being welded on the side plate 103 is provided with gap d 1.In addition, as shown in figure 31, between plywood 150 and panelling 104, the weldering hole (amount of welding) as plywood 150 and panelling 104 being welded on the side plate 103 is provided with gap d 2.Shown in Figure 32 A, 32B, two gap d 1, d2 are filled by repeating twice fillet welding.That is, plywood 150 is the sides that are bonded in scraper bowl 101 by full week welding.

According to said structure, the inner panel 151 by making plywood 150 is converted to heat energy with vibrational energy and eliminates, thus the noise when reducing digging operation.In addition, be arranged on the plywood 150 of the side of scraper bowl 101, be to prevent that by full week welding rainwater is immersed in plywood inside, thereby suppress to get rusty between plate, keep damping property.And, since panelling 104 and wear plate 108 can be when digging operation the protective cover weld part, make it avoid the collision or the friction of rock etc., therefore can prevent the wearing and tearing or the damage of the weld part of plywood 150, improve the durability of plywood 150.

Yet, state in the use under the situation of wear plate 108, there is following problem.

(1) plywood of eliminating for vibrational energy being converted to the heat energy that causes by the mutual friction of plate, its constraint point is few more, and damping property is good more.But, owing to weld and restrained full week in the full week that is carried out on every side of the inner panel 151 of plywood 150, so its damping property is low.On the contrary, if in order to improve damping property by reducing constraint point, to being interrupted welding around the plywood 150, then rainwater can be immersed in its inside and get rusty.

(2) during fabrication, if between plywood 150 and wear plate 108, can not guarantee predetermined gap d1, then can not obtain enough welding qualities.And be when guaranteeing that gap d 1 determines the position of inner panel 151 and outside plate 152, need more multiplex's ordinal number, its result to cause cost to improve.

(3), therefore more also cause cost to improve in multiplex's ordinal number at needs because the volume of weld part is big.On the contrary, if be the minimizing welding capacity, and to being interrupted welding around the plywood 150, then the situation with above-mentioned (1) is the same, and rainwater can be immersed in its inside and get rusty.

(4) thermal deformation when preventing by continuous welding causes heaves or be out of shape, need weld at the point very plywood 150 and side plate 103 temporarily, thereby not only need operation, and cost also can improve.

In addition, as the other suitable example of adhered layer lamination, for example can be as shown in Figure 33, plywood 160 (inner panel 161 and the outside plate 162 that possess defined amount) can be sticked on the hang plate 172 of hopper 171 of disintegrator 170.At this moment, for materials such as anti-sealing invade plywood inside, can consider to adopt full week welding.In this case and since with the situation of above-mentioned (1) in the same manner by retrain complete allly to carrying out full week welding around the inner panel 161 of plywood 160, so its damping property is poor.On the contrary, if be to reduce constraint point and improve damping property, and to being interrupted welding around the plywood 160, then rainwater can be immersed in its inside and get rusty.

Summary of the invention

The present invention is in view of the above fact, its purpose is to provide a kind of vibration damping equipment, it is by the optimal site of fixed bed lamination inside, thermal deformation or the external force when using and the situation that produce " heave " and then effectiveness in vibration suppression disappeared take place of elimination when making, simultaneously, by adopting the structure of the independent deformation that does not hinder the thin plate that constitutes plywood, keep high effectiveness in vibration suppression.

In addition, about scraper bowl, its purpose also is to provide a kind of scraper bowl of engineering machinery, and it can carry out noise experiment etc. and only implement the noise countermeasure with necessary minimal labour, and, can also reinforce the base plate of scraper bowl in the mode that increases necessary minimal weight.

In addition, the object of the present invention is to provide not only damping property good but also can prevent inner rustless vibration damping equipment.

For achieving the above object, according to first scheme of the present invention, provide a kind of vibration damping equipment, it is characterized in that: possess plywood, its inner at least position is fixed on the mother metal that makes a noise; The position that this is inner is the position that becomes the node of vibrational mode when with the vibrational mode of assigned frequency mother metal being vibrated.

Below, for the part based on the action effect of formation of the present invention is understood easily, the reference marks by in accompanying drawing and the accompanying drawing describes.But accompanying drawing and accompanying drawing reference marks only are expression one examples, and can not limit the present invention.According to above-mentioned first structure, as shown in Figure 3, when fixed bed lamination 20 on mother metal 11, become the position G beyond the position E of antinode of vibrational mode 1 when making mother metal 11 with vibrational mode 1 vibration of assigned frequency, fix.

When the vibrational mode 1 with assigned frequency made mother metal 11 vibration, if obtain distribution of amplitudes based on this vibration, then shown in Fig. 5 A, even have same spline structure, according to the difference at position, the amplitude size also can be different.That is, not only there is the big position of amplitude promptly to become the position (PH among Fig. 5 A) of the antinode of vibrational mode 1, and also has the little position of amplitude promptly to become the position (PL among Fig. 5 A) of the node of vibrational mode 1.At the big position of amplitude, the amount of deformation of the thin plate 21,21 ' of formation plywood 20 is also big, and its interfacial friction is also big.

Here, if interim on the E of the position of the antinode that becomes vibrational mode 1 mother metal 11 of fixed bed lamination 20, then constitute the thin plate 21 of plywood 20,21 ' independent deformation will be obstructed, thereby not produced or seldom produce interfacial friction fully.Therefore, the position beyond the E of the position of the antinode that becomes vibrational mode 1 is specifically at the position of the node that becomes vibrational mode 1 G, fixed bed lamination 20.

The position G that becomes the node of vibrational mode 1 is exactly the position that the thin plate 21 that constitutes plywood 20,21 ' amount of deformation are very little or almost do not have originally.Therefore, even fix this place, the effectiveness in vibration suppression that loses is very little or almost do not have effectiveness in vibration suppression promptly about equally, therefore the harmful effect to effectiveness in vibration suppression that is caused by fixed bed lamination 20 can be suppressed to inferior limit.Like this, according to first formation, owing to fixed the optimal site G of plywood 20 inside, the external force when thermal deformation in the time of therefore can eliminating because of manufacturing or use produces " heaving " phenomenon and then loses the thing generation of effectiveness in vibration suppression.And, also do not hinder the independent deformation of the thin plate 21 that constitutes plywood 20, keep high effectiveness in vibration suppression.

According to the second invention scheme of the present invention, a kind of vibration damping equipment is provided, it is characterized in that: possess plywood, it is fixed on the inner at least position of the mother metal that makes a noise; Inner position is the position that becomes the node of a plurality of vibrational modes when with each vibrational mode of a plurality of frequencies mother metal being vibrated.

According to second mode of execution, shown in Fig. 5 A～5D, when fixed bed lamination 20 on mother metal 11, the inner portion G for beyond the position of the antinode that mother metal 11 is become each vibrational mode 1,2,3,4 during with each vibrational mode 1,2,3,4 vibrations of assigned frequency fixes.Owing to be the vibrational mode 1,2,3,4 of having fixed for different frequency, it is very little or almost a position G that does not change to constitute thin plate 21,21 ' the distortion of plywood 20, therefore, can be with the bad influence for effectiveness in vibration suppression of fixed bed lamination 20 is suppressed to inferior limit via a plurality of frequencies.

According to the 3rd invention scheme of the present invention, a kind of vibration damping equipment is provided, it is characterized in that: possess plywood, its inner at least position is fixed on the side plate of scraper bowl of engineering machinery;

Inner position is positioned at the regional G that is made of following each position, that is:

I) because near the position D of the formation of the mid point d that is connected line segment BC of crossing some B of the periphery of line segment CA and plywood and the C of center of arc and mid point d, wherein, line segment CA is, is attached at the C of center of arc, the transferring to the some A of other shapes and obtaining from circular shape roughly in the side of installing to engineering machinery of scraper bowl of the side plate that possesses circular shape roughly at least a portion of a side and form;

Ii) by near the position F that constitutes the mid point f of line segment CA and the mid point f;

The iii) zone between position D and the position F.

That is, shown in Fig. 5 A～5D, when the vibrational mode at different frequency made side plate vibrate 11 1,2,3,4 times, under the situation of which frequency, the antinode position in addition that becomes vibrational mode all was as shown in Figure 1, confirms as regional G.Here, side plate 11 is concrete examples of mother metal 11.According to third party's case, if for example position D in side plate 11 fixed area G then can be suppressed to inferior limit with the harmful effect to effectiveness in vibration suppression that is caused by fixed bed lamination 20.

The feature of the scraper bowl of first engineering machinery of the present invention is: possess: side plate; At least a portion connects the base plate of side plate; Be installed in the plywood on the side plate,

Under the ratio Wp/Hs of the width W p of the height H s of side plate and base plate was situation more than 1.47, the position of at least a portion at the position that side plate is connected with base plate reinforced.

Constitute according to first of scraper bowl, will clearly be defined as for the benchmark that base plate need be implemented the noise countermeasure: " the ratio Wp/Hs of the height H s of side plate and the width W p of base plate is more than 1.47 ", and according to this benchmark, base plate is reinforced.Like this, can the necessary minimal scraper bowl in the various scraper bowls not carried out noise experiment etc. and implement the noise countermeasure with the minimal labour of necessity.

The feature of the scraper bowl of second engineering machinery of the present invention is: possess: side plate, at least a portion connect side plate base plate, be installed in the plywood on the side plate, under the ratio Wp/Hs of the width W p of the height H s of side plate and base plate is situation more than 1.47, the position of the antinode that becomes vibrational mode in side plate and the position that base plate is connected is reinforced.

Constitute according to second of scraper bowl, the same with first formation of above-mentioned scraper bowl, according to the noise countermeasure of benchmark implement to(for) the base plate needs, base plate is reinforced.Therefore, can implement the noise countermeasure with the minimal labour of necessity.In addition,, therefore, the reinforcing of base plate can be embodied as necessary inferior limit owing to only reinforce the position of the antinode that becomes vibrational mode in each position that side plate and base plate link, and the harmful effect that will influence the engineering machinery performance to suppress be inferior limit.

The feature of the scraper bowl of the 3rd engineering machinery of the present invention is: possess: side plate, at least a portion connect side plate base plate, be installed in the plywood on the side plate, and possess the binding parts, its ratio Wp/Hs at the width W p of the height H s of side plate and base plate is under the situation more than 1.47, so that ratio Wp '/Hs of the substantial width W p ' of height H s and base plate is connected side plate and base plate for the mode less than 1.47.

Constitute according to the 3rd of scraper bowl, identical with first formation of above-mentioned scraper bowl, can implement the noise countermeasure with the minimal labour of necessity.In addition, so that Wp '/Hs is installed the binding parts less than 1.47 mode, reduce the sound that sends from base plate.And owing to be to reduce the sound that sends from side plate by mounting layer lamination on side plate under less than 1.47 state at Wp '/Hs, therefore, the noise that scraper bowl can be sent is the most effective and reduce to greatest extent.

The feature of the scraper bowl of the 4th engineering machinery of the present invention is: possess: side plate, at least a portion connect side plate base plate, be installed in the plywood in the outside of side plate, the position of at least a portion at the position inboard, that side plate is connected with base plate of side plate and base plate is reinforced.

According to the 4th formation, owing to the sound that sends that can reduce, therefore not only can reduce noise from the scraper bowl side from base plate, can also reduce the noise in scraper bowl the place ahead.In addition, by the high rigidization of scraper bowl integral body, the side noise is than lower before reinforcing.In addition owing to only reinforced the inboard linking department of scraper bowl, therefore with compare when the reinforcings materials such as arranged outside wear plate of scraper bowl, can reduce the weight increase of reinforcing material.

The 4th vibration damping equipment of the present invention, possess: plywood, it is stackedly to constitute by the outside of the inner panel of the regulation number of the notch part that has rectangle or waveform at peripheral portion and the inner panel that is arranged on the regulation number and outside plate with shape different with the inner panel peripheral portion are carried out; Inner panel docks with the parts of vibration damping object machinery; Peripheral portion at outside plate is implemented continuous welding, implement to be interrupted welding by the described notch part of welding manner landfill at the peripheral portion of inner panel, plywood is attached on the parts of vibration damping object machinery, by the inner panel of outside plate with the described regulation number of the closed sealing of parts of machinery.According to this structure, carry out continuous welding (full week welding) by outside plate and prevent that rainwater from immersing, and prevent to get rusty between plate plywood.

In vibration damping equipment, can also be as follows: in the time of on the parts that plywood are attached to vibration damping object machinery, further implement to weld based on the interruption of many places welding at the peripheral portion of inner panel.According to this structure, be interrupted welding at the peripheral portion of inner panel, the degree of restraint of inner panel is suppressed for lower, therefore can obtain to have the good damping behavior and the remarkable vibration damping equipment of noise reduction effect.

The 5th vibration damping equipment of the present invention, possess: plywood, it is stackedly to constitute by the outside of the inner panel of the regulation number of the notch part that has rectangle or waveform at peripheral portion and the inner panel that is arranged on the regulation number and outside plate with shape different with the inner panel peripheral portion are carried out; The parts of vibration damping object machinery have the joint unit of the end that can butt up against plywood; Inner panel has from the periphery of outside plate outstanding and butt up against a plurality of end-to-end joint parts of joint unit; By welding landfill end-to-end joint part each other, inner panel is contained on the parts of vibration damping object machinery, between the periphery and joint unit of outside plate, carry out the continuous welding that covered by inner panel, by the inner panel of the closed sealing regulation of the parts of outside plate and vibration damping object machinery number.According to this structure, the inner panel of regulation number is by the end-to-end joint part of butt joint inner panel on the joint unit of mechanical side, and definite easily position.In addition, do not need to carry out that thermal deformation when preventing continuous welding causes distortion such as heaves and locate temporarily, thereby reduced process number and cost.In addition because the weld part of protective layer lamination is seen in the end-to-end joint part of mechanical side, therefore can protect weld part avoid by and foreign matter between collision or the friction damage or the wearing and tearing that cause, thereby improved the durability of plywood.

The 6th vibration damping equipment of the present invention possesses plywood, and this plywood is to the inner panel of regulation number and be arranged on that the outside plate in the outside of regulation number inner panel is laminated; Peripheral portion at inner panel is provided with a plurality of protuberances consistent with the peripheral shape of outside plate; Implement continuous welding by peripheral portion, and a plurality of protuberances at inner panel are interrupted welding, by the inner panel of the closed sealing regulation of the parts of outside plate and vibration damping object machinery number at outside plate.According to this structure, owing to can carry out the protuberance of inner panel is implemented the interruption welding of welding by the continuous welding operation of outside plate, therefore, not only manufacturing process has reduced, and the cost step-down.In addition,, therefore these positions can be used in the position of each plate of determining plywood, can carry out the positioning operation between each inner panel and the outside plate easily, obtain vibration damping equipment cheaply because the protuberance of inner panel is roughly consistent with the peripheral shape of outside plate.

In vibration damping equipment, all right: as have the notch part of rectangle or waveform between a plurality of end-to-end joint parts of inner panel, and the length of each end-to-end joint part to be between 100～280mm.According to this structure, owing to being based on test result, the interruption weld interval of the peripheral portion of inner panel is set between 100～280mm, and therefore can obtain extraordinary noise and reduce effect.

In vibration damping equipment, all right: a plurality of protuberances of inner panel are set up with the interval of 100～280mm.According to this structure, the interruption weld interval of the peripheral portion of inner panel is set between 100～280mm based on test result, obtaining very, favorable noise reduces effect.

Description of drawings

Fig. 1 is the side view of scraper bowl of side plate of the scraper bowl of expression first mode of execution of the present invention.

Fig. 2 is the figure of side plate cross-section structure of the scraper bowl of presentation graphs 1.

Fig. 3 be used to illustrate first mode of execution, with the figure of the amount of deformation of the antinode of vibrational mode and the corresponding plywood of node.

Fig. 4 A and Fig. 4 B are the explanatory drawings of distortion that is used to illustrate the thin plate of first mode of execution, wherein, and the state when Fig. 4 A represents the side plate non-vibration; State when Fig. 4 B represents the side plate vibration.

Fig. 5 A～5D represents in the first embodiment, the figure of the distribution of the amplitude size when making the side plate vibration with each vibrational mode, and the PL among the figure represents that " node ", PH represent that " antinode ", PM represent " centre " (that is, be not node but amplitude is little).

Fig. 5 A represents vibrational mode 1; Fig. 5 B represents vibrational mode 2; Fig. 5 C represents vibrational mode 3; Fig. 5 D represents vibrational mode 4.

Fig. 6 is the stereogram of the scraper bowl of expression second mode of execution of the present invention.

Fig. 7 is the explanatory drawing that is equivalent to the 7-7 section of Fig. 6, and has represented scraper bowl each several part size.

Fig. 8 A and Fig. 8 B are the figure that the scraper bowl that links parts is installed of expression second mode of execution, and wherein, Fig. 8 A is the explanatory drawing that is equivalent to the 8A-8A section of Fig. 6;

Fig. 9 be expression side plate height of second mode of execution and baseplate width ratio, and the noise contribution amount between the figure of relation.

Figure 10 is the distribution map of the amplitude size of the vibrational mode of usefulness assigned frequency of expression second mode of execution when scraper bowl is vibrated.

Figure 11 A and Figure 11 B be expression second mode of execution embodiment, carry out figure with the hydraulic shovel that possesses scraper bowl to the situation of the loading operation of truck, wherein, Figure 11 A is the side-looking explanatory drawing, Figure 11 B overlooks explanatory drawing.

Figure 12 is the stereogram of the scraper bowl of expression the 3rd mode of execution of the present invention.

Figure 13 is the side view of the scraper bowl of expression the 3rd mode of execution.

Figure 14 is the stereogram of the plywood of expression the 3rd mode of execution.

Figure 15 A wants portion's sectional drawing corresponding to the 15A-15A section of Figure 13.

Figure 15 B wants portion's sectional drawing corresponding to the 15B-15B section of Figure 13.

Figure 16 A, 16B, 16C be expression the 3rd mode of execution jointing state want portion's sectional drawing.

Figure 16 A is that expression is interrupted the explanatory drawing of the situation of welding to the gap shown in Figure 15 A.

Figure 16 B is the situation of continuous welding is carried out in expression to the gap shown in Figure 15 A a explanatory drawing.

Figure 16 C is the situation of continuous welding is carried out in expression to the gap shown in Figure 15 B a explanatory drawing.

Figure 17 is the determination data of the expression weld spacing the 3rd mode of execution, inner panel and the relation between the rank that makes a noise.

Figure 18 is the explanatory drawing of the weld spacing of the 3rd mode of execution.

Figure 19 A is the additional embodiments of expression the 3rd mode of execution.

Figure 19 B is the 19B-19B sectional drawing among Figure 19 A.

Figure 20 is the side view of the self-propelled type breaker of the 4th mode of execution of the present invention.

Figure 21 is the stereogram of the hopper of the 4th mode of execution.

Figure 22 is the plan view of the inclined wall of the 4th mode of execution.

Figure 23 A is the 23A-23A sectional drawing of Figure 22.

Figure 23 B is the 23B-23B sectional drawing of Figure 22.

Figure 24 is the explanatory drawing of the weld spacing of the 4th mode of execution.

Figure 25 A～28th is as the plan view of the plywood of other patterns of the variation of third and fourth mode of execution.

Figure 25 A is that indication notch portion is the figure of the example of waveform;

Figure 25 B is that the peripheral portion that is illustrated in inner panel is provided with the figure of a plurality of plug weldings with the example in hole;

Figure 25 C is illustrated in the figure that is provided on inner panel and the outside plate with a plurality of holes example of side plate welding;

Figure 26 is that expression makes the panelling side end of inner panel give prominence to and be provided with at protuberance the figure of the example of notch part from the outside plate periphery;

Figure 27 is the figure that the panelling side end that is illustrated in inner panel is provided with the example of a plurality of protuberances and notch part;

Figure 28 is that the expression end that makes inner panel is outstanding and the figure of the example that a plurality of notch parts fill by welding again is set at protuberance from the outside plate periphery;

Figure 29 is based on the stereogram of the scraper bowl of conventional art.

Figure 30 is the 30-30 sectional drawing of the Figure 29 before the welding.

Figure 31 is the 31-31 sectional drawing of the Figure 29 before the welding.

Figure 32 A and Figure 32 B be expression based on Figure 29 of the welding process of conventional art want portion's sectional drawing, wherein, Figure 32 A is the figure of the state after representing once to weld, Figure 32 B is the figure that represents the state after twice welding.

Figure 33 is based on the stereogram of the disintegrator of conventional art.

Figure 34 is the stereogram of embodiment's that third and fourth mode of execution is constituted scraper bowl.

Figure 35 is the chart that is illustrated in embodiments of the present invention and embodiment's noise energy reduced rate.

Figure 36 is the side view of expression embodiment's that first～the 3rd mode of execution is constituted scraper bowl.

Figure 37 A, 37B, 37C are that expression is with vibration damping object machinery and the outside plate sectional drawing with the embodiment of the mode combination of the inner panel of airtight sealing defined amount.

Embodiment

Below, with reference to accompanying drawing, describe the preferred embodiments of the present invention in detail.In addition, in the present embodiment, consider to possess the engineering machinery such as hydraulic shovel of the working machine of being with scraper bowl.

As first mode of execution, the vibration that the side plate of the scraper bowl that suppresses engineering machinery is produced, the situation that reduces the noise that sends from side plate describe.Fig. 1 represents the side plate 11 as the scraper bowl 10 of the vibration damping object of first mode of execution; Fig. 2 represents the section of side plate 11.As shown in Figure 2, stacked a plurality of steel sheet 21 on the side plate 11 of scraper bowl 10 constitute plywood 20.The thicker steel protecting sheet 30 of further overlapping protection thin plate 21 on plywood 20, and shown in the hatching of Fig. 1,20a utilizes modes such as full week welding, fillet welding to be fixed on the side plate 11 around it.Protecting sheet 30 is provided with by wearing and tearing such as sand in order to prevent thin plate 21.In addition, also protecting sheet 30 can be set on plywood 20.As around with plywood 20 (periphery) be fixed on method on the side plate 11, except adopting the above-mentioned fixed method of full round angle solid welding of passing through, fixation method arbitrarily such as can also adopt that the fillet welding of interruption or plug welding intermittently or bolt are tightened.These fixation methods for example are documented in TOHKEMY 2000-219168 communique, No. 6332509 communiques of U. S. Patent and the TOHKEMY 2002-48188 communique.

Below, with reference to Fig. 4 A and Fig. 4 B, describe from the mechanism that sidepiece 11 sends vibration and reduces the noise that sends from side plate 11 suppressing plywood 20.Shown in Fig. 4 B, when side plate 11 vibrations, this vibration is communicated to plywood 20, makes the thin plate 21, the 21 ' distortion that constitute plywood 20.For overlapping a plurality of thin plate 21,21 ' plywood 20, the amount of deformation of its each layer is inequality.Promptly, adjacent thin plate 21,21 ' radius of curvature are respectively unequal r1, r2, therefore, displacement originally is thin plate 21,21 ' (with reference to Fig. 4 A) of x, by the micro-strain that causes by vibration, its displacement becomes X+ Δ X2, X+ Δ X1 respectively, thereby produces relative displacement Δ X2-Δ X1 between two thin plates 21,21 '.Relative displacement Δ X2-Δ X1 produces frictional force (hereinafter referred to as interfacial friction) between thin plate 21,21 '.Thereby the vibrational energy that produces at side plate 11 is converted to the heat energy that is caused by this interfacial friction.Thus, suppress, reduce the noise that produces from side plate 11 from the vibration of side plate 11 generations.

Thereby it is the condition that is used for vibration damping that thin plate 21,21 ' generates relative displacement Δ X2-Δ X1 with the mode independent deformation shown in Fig. 4 B.On the contrary, the performance function if two thin plates 21,21 ' are fixed as one then hinders independent deformation, thereby does not produce or seldom produce relative displacement fully, and then can not obtain or seldom obtain effectiveness in vibration suppression.

Represent during Fig. 3 when the vibrational mode 1 with assigned frequency makes mother metal 11 vibration, with figure corresponding to the amount of deformation of the mode presentation layer lamination 20 of the antinode of vibrating mode 1, node.In Fig. 5 A, the distribution according to the amplitude size of this vibration of expression when mother metal 11 is vibrated, and represented each position by different patterns in mode corresponding to the amplitude size.In Fig. 5 A, the position of being represented by PH is the big antinode position of amplitude, and the position of being represented by PL is that amplitude is 0 to be the node position.Like this, even have same structure, but also different according to the various amplitude size at position, that is, the existing big position of amplitude that becomes is the position of the antinode of vibrational mode 1, has also that to become the little position of amplitude be the position of the node of vibrational mode 1.

As shown in Figure 3, at the big antinode position E of amplitude, the thin plate 21,21 ' amount of deformation and the interfacial friction that constitute plywood 20 are all big.And in contrast, at the position of the antinode that becomes vibrational mode 1 E, plywood 20 is fixed on the mother metal 11.In this case, hindered thin plate 21, the 21 ' independent deformation of formation plywood 20, thereby do not produced or seldom produced interfacial friction fully.Therefore, can not obtain or seldom obtain effectiveness in vibration suppression based on plywood 20.Therefore, in the first embodiment, other positions at the position E of the antinode of avoiding becoming vibrational mode 1 specifically at the position of the node that becomes vibrational mode 1 G, are fixed on plywood 20 on the mother metal 11.

On the other hand, the clear and definite position that becomes the node of vibrational mode 1, consequently regional G as shown in Figure 1 in side plate 11.The C of center of arc of the side plate 11 that will on the part of downside (side), possess circular arc shape roughly and constitute with transfer to connecting line that the some A of other shapes be connected as line segment CA to the installation side of engineering machinery from circular shape roughly at scraper bowl 10, the point that this line segment CA and plywood 20 intersected is as B, and with the connecting line of tie point B and the C of center of arc as line segment BC.Zone G comprises: near the position D of the mid point d of line segment BC and mid point d; Near the position F of the mid point f of line segment CA and mid point f; And, the zone between position D and the position F.

Like this, when on the side plate 11 at scraper bowl 10 during fixed bed lamination 20, for example position D in the fixed area G.Fig. 2 represents an example of the method on the side plate 11 that the position G of plywood 20 is fixed on.As shown in Figure 2, protecting sheet 30, plywood 20 being connected mode perforating 50, and implement plug welding in the mode that in hole 50, is full of welding material 51 to side plate 11.In addition, except plug welding, fixation method arbitrarily such as can also adopt that bolt is tightened.

The position G that becomes the node of vibrational mode 1 is exactly the position that the thin plate 21 that constitutes plywood 20,21 ' amount of deformation are very little or almost do not have originally.Therefore, even fix this place, the effectiveness in vibration suppression that loses is very little or almost do not have effectiveness in vibration suppression promptly about equally, therefore the bad influence to effectiveness in vibration suppression that is caused by fixed bed lamination 20 can be suppressed to inferior limit.Like this, according to first mode of execution, owing to fixed the optimal site G of plywood 20 inside, the external force when thermal deformation in the time of therefore can eliminating because of manufacturing or use produces " heaving " phenomenon and then loses the thing generation of effectiveness in vibration suppression.And, also do not hinder the independent deformation of the thin plate 21 that constitutes plywood 20, keep high effectiveness in vibration suppression.In addition, in the first embodiment, for a vibrational mode of a frequency, fixed the position beyond the antinode, but also can be, fixedly antinode position in addition for a plurality of vibrational modes of a plurality of frequencies.

Fig. 5 A～5D is illustrated respectively in the distribution that the vibrational mode of different frequency makes side plate vibrate 11 o'clock amplitude size 1,2,3,4 times.Make side plate vibrate at 11 o'clock with vibrational mode 1,2,3,4, no matter under the situation of which frequency, all vibrational mode become position beyond the antinode as regional G.As shown in Figure 1, regional G is made of zone between position D, position F and position D and position F.Thereby, if to the side plate 11 fixed bed laminations 20 of scraper bowl 10 time for example position D in the fixed area G, then the bad influence to effectiveness in vibration suppression that is caused by fixed bed lamination 20 can be suppressed to inferior limit.

In addition, in the first embodiment, be consider vibrational mode and stipulated when side plate 11 fixed bed laminations 20 in the fixed position of inside, but as long as the position fixed lateral plate 11 beyond the periphery of plywood 20.The phenomenon such as heave that thus, can prevent to cause by applying heat takes place.Especially preferred following mode, that is, the position of (inside) beyond the periphery with plywood 20 (position G or regional G) and periphery 20a together are fixed on the side plate (perhaps mother metal) 11.Thus, situation such as can not only prevent to heave and take place, and can keep high effectiveness in vibration suppression.

In the first embodiment, as the vibration damping object, but the present invention can be with mother metal arbitrarily as vibration damping object and practical application with the side plate 11 of the scraper bowl 10 of engineering machinery.For example, in the parts of the working machine that constitutes engineering machinery, shear leg, cantilever are carried out can using the present invention under the situation of vibration damping.In addition, for the engineering machinery that possesses scraper plate, also can use the present invention, to the scraper plate vibration damping.In addition, can also apply the present invention to possess the crushing operation machinery of hopper etc., the hopper vibration damping in source takes place as noise.In addition, when the crawler belt of the running gear that constitutes engineering machinery, track frame etc. are carried out vibration damping, also can use the present invention.

In addition, also can be on assemblies such as motor or oil hydraulic pump mounting layer lamination 20, carry out vibration damping.Especially when using oil hydraulic pump, exist the pulsation that produces by oil hydraulic pump to be communicated in the pipe arrangement and produce the problem of noise.The frequency that becomes problem in oil hydraulic pump is the frequency and the humorous voice frequency thereof of pulsation.Here, also can be the same with first mode of execution, the position beyond the antinode of becoming of each vibrational mode is specified in the distribution of the amplitude size under each vibrational mode of ripple frequency and humorous voice frequency thereof, and fix this position, can reduce noise like this based on the pulsation that causes by oil hydraulic pump.

Below, as second mode of execution, the vibration that the scraper bowl that is suppressed at engineering machinery is produced, the situation that reduces the noise that sends from side plate and base plate describe.Fig. 6 is the stereogram as the scraper bowl 10 of the vibration damping object of second mode of execution; Fig. 7 represents the section of scraper bowl 10.As shown in Figure 6, on the side plate 11 of scraper bowl 10, constitute the plywood 20 that stacked a plurality of steel sheet forms.As in the method that plywood 20 is fixed on side plate 11, except adopting the above-mentioned fixed method of full round angle solid welding of passing through, fixation method arbitrarily such as can also adopt that the fillet welding of interruption or plug welding intermittently or bolt are tightened.

In the upper end of side plate 11 panelling 13 is installed, is used to reinforce the opening portion of scraper bowl 10.On base plate 12, be equipped with in the dipper teeth 18, support (bracket) 19 also is installed.Cantilever 41 shown in Figure 11 A is installed on support 19.The corner portion inboard, that side plate 11 is connected with base plate 12 at scraper bowl 10 is fixed with reinforcement feature 14.This reinforcement feature 14 is in order to ensure the intensity of scraper bowl 10 and improve rigidity setting.

At privileged site K (with reference to Figure 10) inboard of scraper bowl 10, in side plate 11 and the corner portion that base plate 12 is connected, the binding parts 15 of the beam shape that links side plate 11 and base plate 12 are installed.By linking side plate 11 and base plate 12 binding parts 15 being set, is when guaranteeing rigidity for reinforcing soleplate 12, reduces the noise that sends from base plate 12.

Below, subtend base plate 12 is installed the benchmark that links parts 15 and is described.In Fig. 9, with the ratio Wp/Hs of the width W p of the height H s of side plate 11 and base plate 12 as transverse axis, with noise contribution amount T1, the T2 of side plate 11, base plate 12 as the longitudinal axis.Fig. 9 is expression with mounting layer lamination 20 or link the result of the state estimating noise contribution amount of parts 15 on scraper bowl not.The width W p of the base plate 12 of scraper bowl 10 and the height H s of side plate 11 are defined by Fig. 7.

As shown in Figure 9, Wp/Hs less than 1.47 regional N in, the noise contribution amount T2 of base plate 12 is less than the noise contribution amount T1 of side plate 11.That is, the noise contribution amount T2 of base plate 12 is less than the noise contribution amount T1 of side plate 11, and the noise that sends from side plate 11 is top dog, and therefore, only by mounting layer lamination 20 on side plate 11, can reduce the noise that scraper bowl 10 sends.Because even reinforcing soleplate 12 can not have much contributions to the noise that reduces scraper bowl 10 yet, therefore need not reinforcing soleplate 12.Therefore, less than in 1.47 the scraper bowl 10, mounting layer lamination 20 only on side plate 11 omits the installation that links parts 15 for ratio Wp/Hs.

Relative with it, in Wp/Hs was regional Q more than 1.47, the noise contribution amount T2 of base plate 12 was more than the noise contribution amount T1 of side plate 11.That is, the noise that sends from base plate 12 is top dog, and therefore, only mounting layer lamination 20 if promptly can not reduce the noise that sends from base plate 12, then can't reduce the noise that scraper bowl 10 sends not enough on side plate 11.Therefore, be in the scraper bowl 10 more than 1.47 for ratio Wp/Hs, except mounting layer lamination 20 on the side plate 11, also want described in image pattern 8A and Fig. 8 B like that, be provided with in the corner portion 16 that connects side plate 11 and base plate 12 and link parts 15.

According to above-described second mode of execution, to clearly be defined as for the benchmark that base plate 12 needs to implement the noise countermeasure: " the ratio Wp/Hs of the width W p of the height H s of side plate 11 and base plate 12 is more than 1.47 ", and, base plate 12 is reinforced according to this benchmark.Like this, can the necessary minimal scraper bowl in the various scraper bowls not carried out noise experiment etc. and implement the noise countermeasure with the minimal labour of necessity.Therefore, can reduce the expense of design, manufacturing scraper bowl significantly.In addition, when the new scraper bowl of design,, therefore can seek to shorten from being designed into the operation of manufacturing owing to can judge from the size of the each several part of design phase and whether should reinforce to base plate 12.

Below, for various embodiments, the mounting point and the installation method that link parts 15 are described.

(embodiment 1)

Binding parts 15 are installed in whole zone in corner portion 16.

(embodiment 2)

Appointment is only installed binding parts 15 to this position from the main generation source that base plate 12 makes a noise.

When the frequency spectrum of the noise to the engineering machinery actual job time was analyzed, the noise that reduces the frequency band that produces peak value was very important.Therefore,, implement the vibrational mode of scraper bowl 10 and resolve, seek the main generation source of the noise that sends from base plate 12 with the noise of the frequency band that produces big peak value.Figure 10 relates to the size distribution of amplitude of the representative vibrational mode of scraper bowl 10, and according to the amplitude size with different deep or light each positions of having represented.In the drawings, for the clear and definite relation corresponding, represented the mounting point of dipper teeth 18, support 19 with Fig. 6.

As shown in figure 10, even same structure, according to the difference at position, its amplitude is also inequality, promptly not only has amplitude greatly in other words to become the position of the antinode of vibrational mode, and the little position that in other words becomes the node of vibrational mode of amplitude is also arranged.Here, think the position of the antinode that becomes vibrational mode of corner portion 16 to be pronounced main generation sources from base plate 12.Therefore, from the distribution of amplitudes of Figure 10, seek out the position K of the antinode that becomes vibrational mode of corner portion 16, and, binding parts 15 are installed at this position K.According to embodiment 2, because only the position K of the antinode that becomes vibrational mode in the corner portion 16 of side plate 11 and base plate 12 bindings installs binding parts 15, therefore, the reinforcing of base plate 12 can be embodied as necessary inferior limit, and the bad influence that will influence the engineering machinery performance to suppress be inferior limit.

(embodiment 3)

So that less than 1.47 mode, installing, ratio Wp '/Hs of the width W p ' of the height H s of side plate 11 and base plate 12 links parts 15.Shown in Fig. 8 A and 8B, in two corner portions 16 of base plate 12 binding parts 15 are installed respectively, be the length of 12a binding line segment to each other with the linking department that links parts 15, as " actual baseplate width Wp '., as shown in Figure 9, the value that install to link the ratio Wp/Hs before the parts 15 is set at J2 here, is in the regional Q that the noise contribution amount T2 of base plate 12 is top dog.Binding parts 15 are installed in regional Q and are reduced the sound that sends from base plate, the most effective for the noise aspect that reduces scraper bowl 10.

After install linking parts 15, the value of Wp '/Hs can be become J1 from J2, and can be displaced to the regional N that the noise contribution amount T1 of side plate 11 is top dog.Zone N be from sending of sending of base plate 12 sound becomes problem hardly but send the zone that sound becomes problem from what side plate 11 sent.In regional N on side plate 11 mounting layer lamination 20, the most effective for the noise aspect that reduces scraper bowl 10.

According to described embodiment 3, so that being installed less than 1.47 mode, Wp '/Hs links parts 15, reduce the sound that sends from base plate 12.Because at Wp '/Hs is to reduce the sound that sends from side plate 11 by mounting layer lamination 20 on side plate 11 under less than 1.47 state, therefore, can the most effective and reduction to greatest extent with the noise that scraper bowl 10 sends.

(embodiment 4)

Can also make up enforcement to embodiment 2 and embodiment 3.That is,, and, less than 1.47 state binding parts 15 are installed with Wp '/Hs at this position K at the position K that seeks the antinode that in corner portion 16, becomes vibrational mode by the distribution of amplitudes of Figure 10.

(embodiment 5)

In the above embodiments 1～4, be to use the binding parts 15 of beam shape to reinforce the corner portion 16 of base plate 12, but also can only reinforce the corner portion 16 that in Fig. 8 A, dots, and not necessarily use the binding parts 15 of beam shape.For example, can adopt following mode of execution: fill reinforcement feature in the mode that in corner portion 16, does not form the gap; Perhaps, the same with in the past wear plate, not in the inboard of scraper bowl 10, but stick reinforcement feature in the outside.

(embodiment 6)

In the above embodiments 1～5, be that the situation that the scraper bowl 10 more than 1.47 is reinforced is considered to Wp/Hs.But, also can implement in the following ways: promptly,, all can a promptly opposite position side, that side plate 11 is connected with base plate 12 be installed by reinforcing materials such as linking parts 15 in the inboard that becomes scraper bowl 10 with the attachment face of plywood 20 regardless of the value of Wp/Hs.At this moment, can the reinforcing material be set, also the reinforcing material can be set on the part of inboard joint in the whole zone of the inboard joint of side plate 11 and base plate 12.

Below, to embodiment 6 effect, describe with reference to Figure 11 A and Figure 11 B.Figure 11 A and Figure 11 B are that expression is installed in scraper bowl 10 on the cantilever 41 of hydraulic shovel 40 and the figure of the form that hydraulic shovel 40 loads to truck 42.Here, though considered scraper bowl 10 plywood 20 is installed, not by linking the situation that parts 15 etc. are reinforced base plate 12.In this case, though, but still be in very big state from the sound that sends of base plate 12 because the effect of plywood 20 has obviously reduced the sound that sends from side plate 11.Thereby,, can not obtain sufficient noise and reduce effect for the noise of the place ahead S of scraper bowl 10.

Be directed to this, considered not only on scraper bowl 10, to be equipped with plywood 20 again, and by linking the situation that parts 15 etc. are reinforced base plate 12.At this moment, owing to by linking parts 15 grades base plate 12 is reinforced, therefore, the vibration amplitude that becomes the reason of noise diminishes, and has reduced the sound that sends from base plate 12.Therefore, for the noise of the place ahead S of scraper bowl 10, can obtain sufficient noise and reduce effect.In addition, from base plate 12 to send sound also influential to the noise of the side R of scraper bowl 10.Therefore, can on all directions of the side R that comprises scraper bowl 10, fully reduce noise.In addition owing to only reinforced the inboard linking department of scraper bowl 10, therefore with compare when the reinforcings materials such as arranged outside wear plate of scraper bowl 10, can reduce the weight increase of reinforcing material.

Then, use Figure 12～16C, the 3rd mode of execution is described.As shown in figure 12, as the operation of hydraulic shovel scraper bowl 101, be welded with side plate 103,103 respectively being bent on the left and right sides of the base plate 102 of C shape roughly with annex.And, on side plate 103,103 and base plate 102, weld panelling 104,104,105 respectively, form the opening portion of scraper bowl 101.Panelling 104,104,105 is mounted in and is accompanied by the parts that excavate the position that causes fierce friction, and the thickness setting of these parts is the thickness greater than base plate 102 or side plate 103.A plurality of dipper teeths 106 are installed on panelling 105.In the end of the opposite side with the dipper teeth assembly department of base plate 102, be provided with the pin hub (pin boss) 107 of the working machine that links hydraulic shovel.Outer side surface perimembranous at side plate 103 is provided with wear plate 108 along base plate 102.

At the outer side surface of the side plate 103 of scraper bowl 101, as shown in Figure 13, post the roughly plywood 110 of semi-circular shape in the mode of being surrounded by panelling 104 and wear plate 108.In the inside of plywood 110, be provided with the hole 110a that plug welding is used.As shown in figure 14, plywood 110 possesses: inner panel 111 is made of the thin steel plate of stacked defined amount; Outside plate 112 is layered in the outside of inner panel 111.Outside plate 112, in extruding inner panel 111, possess that protection inner panel 111 is avoided when excavating and rock between collision and the thickness of wearing and tearing.

The end shape of the roughly circular-arc side of each inner panel 111 is and roughly consistent shape of the interior week of wear plate 108, and the 111a of rectangular indentation portion of Rack w is arranged on a plurality of positions that comprise the circumferential two ends of circular-arc side end roughly.By separating, form a plurality of end-to-end joint part 111b that dock in interior week with wear plate 108 with notch part 111a.The width of notch part 111a equates with gap d 1 between outside plate 12 and the wear plate 108.The end shape of the roughly circular-arc side of outside plate 112, and between the interior week of interior wear 108, be formed with gap d 1 as weldering hole (amount of welding).Owing to have above-mentioned shape, at notch part 111a, shown in Figure 15 A, plywood 110 is spaced apart with wear plate 108 formation gap d 1.At end-to-end joint part 111b, shown in Figure 15 B, the inner panel 111 of plywood 110 docks with wear plate 108, and it is spaced apart to form gap d 1 between outside plate 112 and the wear plate 108.That is, end-to-end joint part 111b begins the degree of outstanding gap d 1 from the periphery of outside plate 112.Each inner 111 and outside plate 112 be formed as and 104 shapes (roughly straight line) that form gap d 2 (not shown, identical) as the weldering hole of panelling with Figure 31.

Carry out operation in the following manner to the side of scraper bowl 101 adhered layer lamination 110.At first, the inner panel of overlapping regulation number butts up against wear plate 108 and the position of decision inner panel 111 with end-to-end joint part 111b.Then, utilize the notch part 111a of inner panel 111, the position of decision outside plate 112.After the location of complete layer lamination 110 (inner panel 111 and outside plate 112), the interim location of double as is welded landfill with notch part 111a in the mode shown in Figure 16 A.Thus, each inner panel 111 just to be interrupted welding manner, is installed on the scraper bowl 101.Then, with the gap d 1 between the mode continuous welding shown in Figure 16 B and Figure 16 C and landfill notch part 111a and the end-to-end joint part 111b.In addition, use the continuous welding mode, the gap d 2 between landfill plywood 110 and the panelling 104.That is, for plywood 110, with each inner panel 111 wear plate 108 sides be interrupted welding and with outside plate 112 in the continuous welding mode, be arranged on the side of scraper bowl 101.Wherein, preferably implement plug welding, prevent the heaving of each plate of the plywood 110 that thermal deformation causes at hole 110a place.Thus, plywood 110 is arranged on the side plate 103 with side plate 103, inner panel 111 and outside plate 112 mode of driving fit roughly separately.

Then, the working condition based on above-mentioned formation is described.Vibrate when side plate 103 flexible distortion, then weld part conducts this vibration, each inner panel 111 is also vibrated by resiliently deformable, and between side plate 103 and the inner panel 111 and inner panel 111 to each other by propagate to lag behind and poor rigidity apart from etc., slide while generate small positional deviation.As long as this vibration continues, then give birth to regard to change broken hair regularly in this small positional deviation or gap, and therefore, the friction between and collision are just carried out always repeatedly separately.Like this, the vibrational energy of side plate 103 will be converted to heat energy and eliminate by the friction between them and collision.Thereby, can reduce the vibration of side plate 103, and then reduce the noise that sends by side plate 103.

In other words, each buttress vibrates according to its constraint conditio, and produces the small relative displacement between plate, therefore can produce plate friction and collision to each other.According to this friction and collision, vibrational energy just can be converted to heat energy, and therefore can decay becomes the vibration in noise source.Especially under the high situation of the adaptation between plate, to compare with the collision phenomenon that gap between plate and the plate produces, the friction between plate becomes principal element, and more effectively attenuation vibration.

The following describes the effect of present embodiment.According to present embodiment, plywood 110 by with the continuous welding of outside plate 112, prevented that rainwater is immersed in the inside of plywood 110 and gets rusty between plate, has kept damping property.Because panelling 104 or wear plate 108 can protect this continuous welding portion to make it avoid the collision or the friction of rock etc. when carrying out digging operation, therefore can prevent the frayed or damage of weld part of plywood 110, improve the durability of plywood 110.In addition, because inner panel 111 is interruption welding of having adopted the welding by a plurality of notch part 111a to constitute, and to compare its degree of restraint low with full week welding, therefore can obtain to have good damping behavior and obtain the vibration damping equipment that significant noise reduces effect.

Aspect the effect on making, the inner panel 111 of defined amount only can be located by end-to-end joint part 111b is run into wear 108, and there is no need to guarantee and wear plate 108 between the gap d 1 in weldering hole.Thus, outside plate 112 also can utilize the notch part 111a of inner panel 111 and determine the position easily, therefore can obtain positioning operation and become easily and the low vibration damping equipment of cost.Because and the welding between the wear plate 108, the continuous welding that is the periphery of interruption welding by being finished by the welding of notch part and outside plate 112 is finished, therefore not only welding capacity is few and welding process also can shorten, and its result can obtain the vibration damping equipment of low cost.In the past, for preventing the generation of thermal deformation, a plurality of interim location had been implemented.But, in the present invention, because the welding double as of notch part 111a is interim location, therefore not only can omit interim positioning process, in addition, also since continuous welding also seldom, therefore even it is less to be also used as the welding position of notch part 111a of interim location, thermal deformation can not take place yet.

Here, the affirmation test result to the relation between the weld spacing of noise reduction effect and inner panel 111 describes.The point of restraint layer lamination more less, be that the length of weld part is short more, it is big more to use the noise of the vibration damping equipment of plywood to reduce effect.This be because: in above-mentioned action specification, also can know like that, produce relative displacement at interlayer easily, thereby produce the cause of bigger frictional force.Thereby think that the weld spacing of inner panel 111 is the bigger the better.Yet, if weld spacing is excessive, producing inner panel mutual beating phenomenon to each other by the vibration of the part of inner panel peripheral portion, its result produces the so opposite problem of bruit de claquement of sending.

Therefore, the weld spacing of inner panel and the relation between the rank of making a noise have been measured.Figure 17 has represented its result.According to Figure 17 as can be known: one increases weld spacing, and then the noise rank reduces gradually, and arrives the spacing place of general 170mm, and making a noise becomes minimum.If spacing is increased to bigger than this value, then by described bruit de claquement, noise increases again gradually, and general in the 280mm everywhere convergent in roughly certain rank.Noise rank when rank during this convergence and spacing are 100mm about equally.Thereby, if spacing is set at less than 100mm, the situation when then its effect can become and be lower than spacing and send bruit de claquement greater than 170mm.In addition, consider the problem that reduces cost,,, then can reduce noise by bruit de claquement and reduce effect if surpass 280mm even want to increase weld spacing.Result discussed above is that the weld spacing of inner panel is preferably set between 100mm～280mm.

Thereby, inner panel 111 weld spacings of the 3rd mode of execution, be that the circumferential lengths L1 of end-to-end joint part 111b is preferably set between 100mm～280mm.Wherein, with the circumferential lengths L1 of end-to-end joint part 111b, define in as shown in figure 18 mode.

In the 3rd mode of execution, adopted by will being welded on the side plate 103, thereby the peripheral portion of inner panel 111 has been interrupted welded structure at the peripheral portion of inner panel 111 notch part 111a with the predetermined distance setting.But, be not limited thereto, for example can be the plywood structure of the additional embodiments shown in Figure 19 A and 19B.Here, Figure 19 A is the stereogram of the plywood of additional embodiments, and Figure 19 B is its 19B-19B sectional drawing.

In Figure 19 A and 19B, have the interior all shapes roughly semicircular peripheral end about equally with the wear plate 108 of scraper bowl 101, and stacked a plurality of inner panel 111A that on this peripheral portion, is not provided with notch part.In the outside of this multi-disc laminated section, stacked diameter constitutes plywood 110A than the outside plate 112 of the little specific length d1 of diameter of inner panel 111A.With plywood 110A, to be attached to the outer side surface of the side plate 103 of scraper bowl 101 by the mode of panelling 104 and wear plate 108 encirclements.By to carrying out continuous welding between the peripheral portion of outside plate 112 and wear plate 108 and the panelling 104, only retrain the peripheral portion of outside plate 112 and outermost inner panel 111A.In this case, owing to be not the whole plates of constraint, so its degree of restraint is low, can obtain good damping behavior.In addition, can prevent that rainwater is immersed in plywood inside, prevent to get rusty between plate, keep long damping behavior.

Then, with reference to Figure 20～Figure 22, the 4th mode of execution is described.In the 4th mode of execution, plywood is applied to the hopper of self-propelled type breaker.As shown in figure 20, self-propelled type breaker 120 is equipped with power plant 123 at the rear portion of the base station 122 that possesses cterpillar drive 121, and the central part at base station 122 is equipped with disintegrator 124 simultaneously.Put into and (for example be broken thing in the hopper 125 that is located at base station 122 front portions, rock, coagulation great soil group, timber, construction waste material etc.), the machine 124 that is broken is broken for prescribed level, and is rearward taken out of by the conveyance device 126 that rearward extends setting from the bottom of base station 122.

As shown in figure 21, be provided with the thing conveyance that is broken that to drop into to the feeding portion 127 of disintegrator 124, and the inclined wall 128,128,129 of hopper 125 forms opening portion towards the top in the mode of surrounding feeding portion 127 at the central part of hopper 125.On the inclined wall 128,128,129 of hopper 125, post plywood 130,130,140 respectively.The shape difference of each plywood 130,130,140 but material is identical.Below, illustrate this plywood 130.

As shown in figure 22, plywood 130 is the outer shape than inclined wall 128 little circles, and is attached to the central part of inclined wall 128.Assigned position at plywood 130 is provided with the hole 130a that plug welding is used.Plywood 130 possesses: the sheet metal of stacked regulation number and the inner panel 121 that constitutes, the outside plate 132 in the outside that is layered in inner panel 131.Avoid dropping into when being broken thing and be broken collision and friction between the thing for protection inner panel 131 in extruding inner panel 131, outside plate 132 has predetermined thickness.The outer profile that forms plywood 130 of outside plate 132, and inner panel 131 a plurality of notch part 131b of possessing a plurality of protuberance 131as consistent and inwardly concave at peripheral portion from the peripheral shape of outside plate 132 with the peripheral shape of outside plate 132.

Stickup operation to the inclined wall 128 paste layer laminations 130 of hopper 125 adopts following method.At first, on the worktable (not shown) of the anchor clamps (not shown) on 2 limits that are provided with the adjacency that butts up against plywood 130, the inner panel 131 of overlapping regulation number is after the overlapping in the above outside plate 132, make whole plates dock and stipulate its position to be welded by the many places of periphery temporarily with anchor clamps.Then, the plywood 130 with welding temporarily combines with inclined wall 128.Thus, shown in Figure 23 A and Figure 23 B, outside plate 132 is carried out continuous welding, and each inner panel 131 is not welded at notch part 131b place, carry out only being welded in the interruption welding on the inclined wall 128 at a plurality of protuberance 131a place.

According to determination data shown in Figure 17, the interval between the protuberance 131a of the inner panel 131 of the 4th mode of execution, be that the circumferential lengths L2 of notch part 131b is preferably set between 100mm～280mm.The circumferential lengths L2 definition of notch part 131b as shown in figure 24.

Since identical when moving with the 3rd mode of execution based on the noise reduction of plywood 130, its explanation therefore omitted.Below, the effect based on the 4th mode of execution is described.According to present embodiment, plywood 130 prevents that rainwater from entering into plywood 130 inside, and prevents to get rusty between plate by the continuous welding of outside plate 132, keeps damping property.Because inner panel 131 is to be interrupted welding, and low compared with the degree of restraint of continuous welding (all full welding), the vibration damping equipment that therefore can obtain to have good damping behavior and remarkable noise reduction effect.Aspect the effect on making, owing to adopted following structure, that is, the continuous welding operation by outside plate 132 is welded the protuberance 131a of inner panel 131 and is interrupted welding, and therefore, manufacturing process is simple and cost is low.In addition, because the protuberance 131a of the inner panel 131 of regulation number is consistent with the profile of outside plate 132, therefore can carries out the positioning operation between each inner panel 131 and the outside plate 132 easily, thereby can obtain vibration damping equipment cheaply.

In addition, the present invention is not limited to third and fourth mode of execution, but can carry out various changes and correction within the scope of the invention.For example, here be that the example that will be made as 5 based on the constrained (being notch part 111a) of wear plate 108 sides of the inner panel 111 that is interrupted welding is illustrated, but the frequency band range of the noise that intensity that also can be as required or need reduces and suitably be chosen as other numbers.

Here, be that the example that the 111a of rectangular indentation portion is set on inner panel 111 is illustrated, but be not limited to rectangle, the notch part 111c that waveform is set like that can also be shown in Figure 25 A.Equally, the notch part 131b of the inner panel 131 of the 4th mode of execution also can be a waveform.When making inner panel 111 with turret type punch press etc., the gap by the variation that produces in the end between each inner panel 111 produces the reduction of damping property, so inner panel 111 is normally made by laser beam machining.Thereby even notch part is shaped as waveform, it makes the problem that also do not have, and, when needing the interrupted welding of a plurality of positions, to compare with rectangle by the requirement of intensity aspect, the laser cutting length of waveform is shorter, therefore can improve producibility.

Except the notch part 111a of rectangle is set at inner panel 111, can also substitute with the following methods, that is, and shown in Figure 25 B, can also on the peripheral portion of wear plate 108 sides of inner panel 111, the hole 111d that a plurality of plug weldings are used be set, and each inner panel 111 be constrained in side plate 103 by plug welding.By the plug welding of hole 111d, the peripheral portion of inner panel 111 is interrupted welding.Can also shown in Figure 25 C, not only constraint point to be set promptly in the following ways, a plurality of inner panel 111 and outside plate 112 are welded on the hole 110a that the plug welding on the side plate 103 is used jointly but be provided with at inner panel 111 places.By the plug welding of hole 110a, inner panel 111 and outside plate 112 are interrupted welding, obtain the effect identical with above-mentioned mode of execution.

, adopting the example that the gap d between plywood 110 and the panelling 104 2 is carried out continuous welding on the plywood 110 here, also can retrain inner panel 111 with being interrupted welding in this part.That is, as shown in figure 26, can adopt following structure: panelling 104 side ends of inner panel 111 are outstanding from the periphery of outside plate 112, notch part 111a is set on this protuberance, and fills notch part 111a and be interrupted welding.Thus, the constraint point of inner panel 111 can be reduced, thereby the vibration damping equipment of damping property can be obtained further to improve.

The technology of the 4th mode of execution can also append in the 3rd mode of execution.That is, as shown in figure 27, at panelling 104 side ends of inner panel 111, a plurality of notch part 111f that a plurality of protuberance 111es consistent with the profile of outside plate 112 are set and inwardly concave with respect to the profile of outside plate 112.Thus, even implement continuous welding at panelling 104 side ends of plywood 110, inner panel 111 also only is the soldered interruption welding of protuberance 111e.Thus, the constraint point of inner panel 111 can be reduced, thereby the vibration damping equipment of damping property can be obtained further to improve.

In addition, the technology of the 3rd mode of execution can also be appended in the 4th mode of execution.Promptly, as shown in figure 28, on inclined wall 128, be provided with in the wear plate 138 of roughly L word shape on 2 limits of the adjacency that can butt up against plywood 130, the end of inner panel 131 that will be relative with wear plate 138 is outstanding from the periphery of outside plate 132 in the mode that butts up against wear plate 138, and at this protuberance a plurality of notch part 131c is set.On protuberance, 131c distinguishes by notch part, forms a plurality of end-to-end joint part 131d that butt up against wear plate 138.Be interrupted after the welding by constituting, outside plate 132 carried out continuous welding, thereby plywood 130 is arranged on the inclined wall 128 with these a plurality of notch part 131c of welding manner landfill.Thus, by make on the inclined wall 128 each inner panel 131 and wear plate 138 mutually on, thereby can locate.And; because wear plate 138 can be protected the weld part of wear plate 138 sides; make it when dropping into, avoid collision or friction with the rock between the thing of being broken etc., therefore can prevent the wearing and tearing or the damage of the weld part of plywood 130, the durability of raising plywood 130.

In above-mentioned third and fourth mode of execution, illustrated plywood 110,130 thickness, be the stacked height structure example about equally that adds up to height and wear plate 108,138 of inner panel and outside plate.But more preferably the stacked total of inner panel and outside plate highly is below the height of wear plate 108,138, and more effectively prevents the abrasive damage of the weld part of plywood with wear plate.As the mechanical part that posts plywood, the scraper bowl 101 (comprising that side plate 3 waits each component parts) of hydraulic shovel and hopper 125 examples such as (comprising that inclined wall 128 waits each component parts) of self-propelled type breaker 120 have been enumerated here, but can certainly be applied to the scraper bowl of wheel loader or the hopper of fixed breaker etc., promptly can be applied to need to reduce on the parts of any machinery of noise.As described above, carry out continuous welding by outside plate to plywood, can prevent that rainwater from entering and plate between get rusty, simultaneously the inner panel of plywood is interrupted welding and the degree of restraint of inner panel is suppressed for lower, therefore can obtain to have the good damping behavior and the remarkable vibration damping equipment of noise reduction effect.

The embodiment that first mode of execution and second mode of execution are made up also is possible.Promptly, as shown in figure 34, scraper bowl 200 is identical with first mode of execution, and on side plate 211 by complete all fillet welding 230 in the mounting layer lamination 220, in the position of the position D that is equivalent to Fig. 1, the inside of plywood 220 and side plate 211 are implemented plug welding (optimization of plug welding).And scraper bowl 200 is the same during with second mode of execution, in the corner portion that side plate 211 and base plate 212 link, at specific position (with reference to Figure 10), the binding parts 215 of the beam shape that links side plate 211 and base plate 212 is installed.Pass between the height H s of the side plate 211 in the present embodiment and the width W p of base plate 212 is the regional Q (that is, it is more than 1.47 than Wp/Hs) of Fig. 9.In addition, in Figure 34, the corner portion that links at side plate 211 and base plate 212 is fixed with reinforcement feature 214, but also can omit this reinforcement feature 214.

About adopting the noise energy reduced rate that embodiment brought of each combination, by Figure 35 explanation.Here, noise energy reduced rate Ed calculates in the following manner, promptly, measures mounting layer lamination 220 by experiment and/or link the noise energy that parts 215 front and back produce, and the noise energy E1-that produces before installing with formula Ed=[(installs the noise energy E2 of back generation)/E1] * 100 (%) calculate.Side plate contribution amount and base plate contribution amount are meant the reduced rate of the sound that sends respectively from side plate and base plate.After " integral body " among Figure 35 is meant and multiply by contribution rate on each reduced rate of side plate and base plate, the value of total.For the scraper bowl before the installation of 220 grades of the plywood in the present embodiment 200, the side plate contribution rate is 39%, the base plate contribution rate is 61%, from but the bigger example of contribution of the sound that sends from base plate 212.

In Figure 35, the several formations beyond the present embodiment have been measured noise energy reduced rate Ed, the scraper bowl of projects No. constitutes that summary is then following to be put down in writing.Here, the scraper bowl as matrix is mounting layer lamination 220 and links scraper bowl before such as parts such as reduction such as parts 215 noises such as grade.

Project 1: plywood 220 is carried out complete all fillet welding 230, carry out plug welding (not shown) in " antinode " position of vibrational mode.

Project 2: plywood 220 is carried out complete all fillet welding 230, carry out plug welding in the position that is equivalent to position D.

Project 3: with plywood 220 when side plate 211 carries out complete all fillet welding 230, ignore the high situation of manufacturing expense, make (not using plug welding) in the mode that on plywood 220, does not produce " heaving ".

Project 4: binding parts 215 (no plywood) are installed at position K.

Project 5: and used project 2 and project 4.

Project 6: each the noise energy reduced rate to project 2 and project 4 carries out the arithmetic sum operation.

Project 7: and used project 1 and project 4.

Below, the noise energy reduced rate to the scraper bowl of above-mentioned projects describes.Though project 3 is desirable states that plywood 220 is installed, because manufacturing expense is high, and also there is problems such as producing bulge phenomenon in using because of impact, therefore be unsuitable for practical application.On the other hand, under the situation of the project 2 that adopts first mode of execution, obtain roughly very low reduced rate with desirable installment state as can be known.In addition, under the situation of the project 1 different with first mode of execution, not only reduced rate is low, but also can not obtain the effect for base plate 212.Here consider that this is because by the deficiency of attenuating, and the cause of the vibrational energy of dissipation of energy base plate 212 not.Project 4 is that the reduced rate of its side plate contribution amount is 7% for the example of the enforcement of the effect of only investigating binding parts 215.Its reason is presumed as follows: by the binding parts 215 of the reinforcing that is also used as base plate 212, the cause that the Oscillation Amplitude of the peripheral portion of side plate 211 diminishes.As described above, reducing noise by reinforcing soleplate 212 is because the cause that the rigidity Y of base plate 212 increases is because the decrement ξ of scraper bowl 200 becomes big cause and reduce noise by plywood 220.Vibrational energy Ev in the certain hour and " 1/{2Y ξ (1-ξ as can be known ²) ^1/2" proportional, and implement rigidity raising and the raising of decay property simultaneously, then can obtain the above effect of addition.

The situation of (, the present embodiment of Figure 34) when project 5 is common implementing first mode of execution (project 2) and second mode of execution (project 4).When project 2 and project 4 difference independent actions the time, its decrement only is to obtain the addition effect, becomes project 6.And in project 5, be the effect by multiplying each other more than the effect acquisition addition.In addition, if, then can not bring effect, therefore the binding parts are installed also can be made effect reduce (project 7) for the plywood of base plate owing to implement plug welding (project 1) in antinode.

In present embodiment (Figure 34), be that ratio Wp/Hs to the width W p of the height H s of side plate 211 and base plate 212 is that situation more than 1.47 is illustrated, but Wp/Hs less than 1.47 situation under, also useful.That is, can fully reduce the noise of the big side plate of contribution rate 211 by plywood 220, the contribution of base plate 212 becomes under the big situation relatively, also can obtain noise and can reduce effect.

And the embodiment that first～the 3rd mode of execution is made up also is possible.That is, the scraper bowl 300 of present embodiment as shown in figure 36, with respect to the embodiment of Figure 34,

I) to have a plywood 110 of the inner panel 111 of notch part 111a and end-to-end joint part 111b and outside plate 112 the same with possessing of Figure 13, and plywood 320 also possesses the inner panel 311 with notch part 311a and end-to-end joint part 311b and the plywood 110 of outside plate 312;

Ii) the same with the 3rd mode of execution, inner panel is interrupted welding, and outside plate 312 is carried out complete all fillet welding.

Several formations beyond the present embodiment have been measured noise energy reduced rate Ed, and used Figure 35, described.Here, the structural outline of the scraper bowl of project 8～12 is as described below, but as the scraper bowl of matrix is and the above-mentioned the same noise reduction parts scraper bowl before of installing.

Project 8: as the 3rd mode of execution, inner panel 311 to plywood 320 is interrupted welding, and outside plate 312 is carried out complete all fillet welding, but when welding, ignore the high situation of manufacturing expense, make (not using plug welding) in the mode that on plywood 320, does not produce " heaving ".

9: the three mode of executions of project are such, the inner panel 311 of plywood 320 is interrupted welding, and outside plate 312 is carried out complete all fillet welding, and implemented plug welding (not shown) in the position of " antinode " of vibrational mode.

Project 10: as the 3rd mode of execution, the inner panel 311 of plywood 320 is interrupted welding, and outside plate 312 is carried out complete all fillet welding, again and used project 2.

Project 11: and used project 10 and project 4.

Project 12: each the noise energy reduced rate to project 10 and project 4 carries out arithmetic addition operation.

Noise energy reduced rate to the scraper bowl of above-mentioned project 8～12 compares explanation.

Project 8 is the same with project 3, though noise energy reduced rate height because manufacturing expense is high and also have problems such as producing bulge phenomenon, therefore is unsuitable for practical application.In project 9, owing to implemented plug welding, so reduced rate significantly reduces.Relative with project 9, under the situation of the project 10 of implementing plug welding 250 on the position D identical,, reduce and can not produce reduced rate by optimization plug welding position with first mode of execution, therefore be can practical application structure.Compare with project 10, therefore project 11 (that is, the present embodiment of Figure 36) identical binding parts 215 when also being equipped with second mode of execution can obtain very large reduced rate.Project 11 and project 12 are compared as can be known, can obtain effect more than the addition by the effect that multiplies each other.

Like this, in the 3rd, the 4th above-mentioned mode of execution, inner panel 111 at plywood 110,130,131 are provided with a plurality of notch part 111a, a plurality of protuberance 131a, and, inner panel 111,131 is interrupted welding by these a plurality of notch part 111a, a plurality of protuberance 131a are welded on as the side plate 103 of the scraper bowl 101 of vibration damping object machinery, the inclined wall 128 of hopper 125.

But, also can inner panel be interrupted welding, and only by outside plate being carried out continuous welding, by outside plate and vibration damping object machinery, the close encapsulation inner panel is attached to the vibration damping object mechanically with plywood.

That is plywood 910, shown in Figure 37 is by constituting with the bottom: the inner panel 912 that is layered in the regulation number on the vibration damping object machinery 901; Be layered in the more lateral of the inner panel 912 of these regulation numbers, and have outside plate 911 greater than the area of inner panel 912.The state of the inner panel 912 of regulation number to be clipped by vibration damping object machinery 901 and outside plate 911 makes vibration damping object machinery 901 and outside plate 911 by full week welding (representing complete all weld parts with 913).Thus, vibration damping object machinery 901 and outside plate 911 are with the mode combination of the inner panel 912 of close encapsulation regulation number.

According to this embodiment, the inner panel 912 of regulation number does not retrain the weld part of its distortion, and owing to having prevented the rainwater immersion by full week welding and having got rusty, therefore can obtain the favorable damping performance.

In Figure 37 A, outside plate 911 and vibration damping object machinery 901 are directly to carry out combination, but also can mutually combine via linking parts.

That is, the plywood 910 shown in Figure 37 B, the same during with Figure 37 A, by constituting: the inner panel 912 that is layered in the regulation number on the vibration damping object machinery 901 with the bottom; With the more lateral of the inner panel 912 that is arranged on described regulation number and possess the outside plate 911 of the area bigger than described inner panel 912.Thus, the inner panel 912 of regulation number is by vibration damping object machinery 901 and outside plate 911 clampings.And, dispose binding parts 914 on the full week of outside plate 911.And, outside plate 911 and link the combination by full week welding (representing complete all weld parts) between the parts 914 with 916, and link parts 914 and vibration damping object machinery 901 by welding (representing complete all weld parts) and combination full week with 915.Thus, the inner panel 912 of regulation number in the mode of closed sealing via linking parts 914 with vibration damping object machinery 901 and outside plate 911 combinations.

According to this embodiment, the inner panel 912 of regulation number does not retrain the weld part of its distortion, and owing to having prevented the rainwater immersion by full week welding and having got rusty, therefore can obtain the favorable damping performance.

In addition, if under the prerequisite of the inner panel 912 of for example stipulating number and outside plate 911 by plug welding (representing plug welding portion) combination in advance with 917, link the welding of parts 914, then can carry out determining the position of plywood 910 easily, therefore can further reduce manufacture cost to vibration damping object machinery 901.In addition, by implementing plug welding, can prevent the bulge phenomenon of plywood 910.

And, can also implement in the following manner, that is, will link the anchor clamps of parts as the position of determining plywood.

That is, the plywood 910 shown in Figure 37 C is by constituting with the bottom: the inner panel 912 that is layered in the regulation number on the vibration damping object machinery 901; With the more lateral of the inner panel 912 that is arranged on described regulation number and possess and described inner panel 912 equal area and identical shaped outside plate 911.Thus, the inner panel 912 of regulation number is by vibration damping object machinery 901 and outside plate 911 clampings.And, dispose binding parts 918 on the full week of outside plate 911.By inner panel 912, outside plate 911, determine the position of plywood 910 at the inwall butt joint regulation number that links parts 918.And, outside plate 911 and link the combination by full week welding (representing complete all weld parts) between the parts 918 with 920, and link parts 918 and vibration damping object machinery 901 by welding (representing complete all weld parts) and combination full week with 919.Thus, the inner panel 912 of regulation number in the mode of closed sealing via linking parts 918 with vibration damping object machinery 901 and outside plate 911 combinations.

According to this embodiment, the inner panel 912 of regulation number does not retrain the weld part of its distortion, and owing to having prevented the rainwater immersion by full week welding and having got rusty, therefore can obtain the favorable damping performance.

In addition, link parts 918 by using, easily relative vibration damping object machinery 901 is determined the position of plywood 910, therefore can further reduce manufacture cost.

In addition, in Figure 37 A, 37B, Figure 37 C, be combination, but also can substitute welding by using binder or sealing material by welding.

In addition, at the vibration damping object machinery 901 of Figure 37 A, 37B, Figure 37 C, with illustrate in the 3rd mode of execution, the 4th mode of execution the same, be the side plate 103 of for example scraper bowl 101, the inclined wall 128 of hopper 125.

In addition, can also be with the plywood 910 of Figure 37 A, 37B, Figure 37 C, carry out appropriate combination with the mode of execution that in first mode of execution, second mode of execution, the 3rd mode of execution, the 4th mode of execution, illustrates and implement.

The present invention can be applicable to suppress the vibration of generations such as mother metal, side plate and reduces the vibration damping equipment of the noise that sends from mother metal etc. and the scraper bowl of engineering machinery.

Claims (5)

1. vibration damping equipment is characterized in that:

Has plywood (110,130), it is by the inner panel (111 to the regulation number of the notch part (111a, 111c, 131c) that has rectangle or waveform at peripheral portion, 131) and be set at the inner panel (111 of described regulation number, 131) the outside and having and described inner panel (111,131) outside plate (112,132) of the different shape of peripheral portion is laminated;

Described inner panel (111,131) docks with the parts (103,128) of vibration damping object machinery;

At described outside plate (112,132) peripheral portion is implemented continuous welding, by the described notch part of welding manner landfill (111a, 111c, 131c) at described inner panel (111,131) peripheral portion implements to be interrupted welding, make described plywood (110,130) be attached on the parts (103,128) of described vibration damping object machinery

Inner panel (111,131) by the described regulation number of parts (103,128) closed sealing of described outside plate (112,132) and described vibration damping object machinery.

2. vibration damping equipment is characterized in that:

Possess plywood (110), this plywood is to the inner panel (111) of regulation number and be arranged on that the outside plate (112) in the outside of described regulation number inner panel (111) is laminated;

The parts (103) of vibration damping object machinery have the joint unit (108) that can dock with the end of described plywood (110);

Described inner panel (111) has a plurality of end-to-end joint parts (111b) outstanding from the periphery of described outside plate (112) and that dock with described joint unit (108);

By the described end-to-end joint part of welding manner landfill (111b) each other, described inner panel (111) is contained on the parts (103) of described vibration damping object machinery,

Between the periphery and described joint unit (108) of described outside plate (112), carry out the continuous welding that covered by described inner panel (111),

Inner panel (111) by the described regulation number of the closed sealing of parts (103) of described outside plate (112) and described vibration damping object machinery.

3. vibration damping equipment as claimed in claim 2 is characterized in that:

The notch part that has rectangle or waveform between a plurality of end-to-end joint parts (111b) of described inner panel (111), and the length of each end-to-end joint part (111b) is between 100～280mm.

4. vibration damping equipment is characterized in that:

Possess plywood (130), this plywood is to the inner panel (131) of regulation number and be arranged on that the outside plate (132) in the outside of described regulation number inner panel (131) is laminated;

Peripheral portion at described inner panel (131) is provided with a plurality of protuberances (131a) consistent with the peripheral shape of described outside plate (132);

Implement continuous welding by peripheral portion, and a plurality of protuberances (131a) at described inner panel (131) be interrupted welding at described outside plate (132),

Inner panel (131) by the described regulation number of the closed sealing of parts (128) of described outside plate (132) and vibration damping object machinery.

5. vibration damping equipment as claimed in claim 4 is characterized in that:

A plurality of protuberances (131a) of described inner panel (131) are provided with the interval of 100～280mm.

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