JP2009233583A - Vibrating sieve machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce noise; to prevent transmission of strong vibrations to a structure side supporting a buffer; and to prevent the damage of a rubber elastic member configuring the buffer. <P>SOLUTION: In the vibration type sieve machine provided with a sieve device 6 composed of a case body 6A into which a treating object is charged and the buffer for elastically supporting the case body 6A, the buffer is composed of the combination of: a main buffer 5 which is connected to the case body 6A to elastically support the case body 6A and includes a swing member 5A configuring a link mechanism and a rubber elastic member to be elastically deformed according to displacement of the swing member 5A; and a sub buffer 20 which is not abutted on the case body 6A when the load of the treating object charged into the case body 6A is the load equal to or less than a preset allowable load G and is abutted on the case body 6A to elastically support the case body 6A when the load of the treating object charged into the case body 6A is the loads G1 and G2 larger than the allowable load G. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a vibratory sieving machine for classifying processed objects such as concrete blocks, debris, and gravel by vibration.

  There exists a thing shown by patent document 1 as this type of prior art. This prior art is configured to include a casing, that is, a vibrator body into which a processed material is introduced, and a shock absorber, that is, a coil spring, that elastically supports the vibrator body. In this prior art, the processing object put in by vibrating the vibrator body is classified, and the vibration applied to the vibrator body is absorbed by elastic deformation of the coil spring. However, in the conventional technique in which the shock absorber is configured by a coil spring in this way, when the coil spring is elastically deformed, the metals tend to rub against each other and noise is likely to occur. For this reason, the technique disclosed in Patent Document 2 has been proposed as another conventional technique capable of reducing noise.

  This other prior art includes a housing, that is, a grid main body into which a workpiece is put, and a shock absorber that elastically supports the grid main body and is different from a coil spring. Another prior art shock absorber includes a plurality of swinging members constituting a link mechanism, and a rubber elastic member elastically deforming in accordance with the displacement of these swinging members. The rubber elastic member is disposed at each end of the swing member and can be twisted. When the workpiece is thrown into the grid body and the workpiece put into the grid is classified in accordance with the vibration applied to the grid body, the rubber elastic member is twisted and deformed when the link mechanism including the swing member is compressed. Further, the rubber elastic member tries to return to the original twisting deformation by its own elastic force, and accordingly, the link mechanism is displaced in the expanding direction, and the vibration is absorbed by repeating these.

As described above, another conventional technique in which the shock absorber is constituted by the swinging member constituting the link mechanism and the member elastically deforming according to the displacement of the swinging member does not cause the metal to rub against each other. Compared with the prior art disclosed in Patent Document 1, low noise can be realized.
Utility Model Registration No. 3018312 JP 2000-325885 A

  Another prior art disclosed in Patent Document 2 described above is excellent in that low noise can be realized. However, the swing member constituting the link mechanism and the rubber elastic member that is elastically deformed in accordance with the displacement of the swing member. There is a problem related to the spring constant of the shock absorber including. That is, if the spring constant of the shock absorber is set too large, the shock absorber cannot sufficiently absorb the vibration when a workpiece is put into the casing, that is, the grid body, and vibration is applied. Strong vibration is transmitted to the supporting structure side, and the durability of the vibration type sieve equipped with this shock absorber tends to deteriorate. In addition, the vibration is transmitted to the surrounding ground where the vibration type sieve is disposed, which adversely affects the installation environment.

  On the other hand, if the spring constant of the shock absorber is set to a small value, the vibration applied to the grid body can be sufficiently absorbed when the load of the processed material put into the grid body is equal to or less than a preset allowable load. The transmission of vibration to the structure supporting the structure can be prevented, but when a processed material exceeding the allowable load is thrown into the grid body, the link mechanism constituting the shock absorber is compressed beyond the allowable displacement. As a result, the rubber elastic member may be deformed beyond the elastic deformation limit, and thus may be damaged. For example, when a hydraulic excavator is driven and a concrete object such as a concrete block accommodated in the bucket of this hydraulic excavator is to be put into the grid body, a processed material with a load exceeding the allowable load as described above is charged. It is easy to do. When the rubber elastic member of the shock absorber is damaged, it is necessary to replace the shock absorber with a new one.

  The present invention has been made from the above-described actual state of the prior art, and an object of the present invention is to realize low noise and prevent transmission of strong vibration to the structure side supporting the shock absorber. It is in providing the vibration type sieve which can prevent the damage of the rubber elastic member which comprises.

  In order to achieve this object, a vibratory sieve according to the present invention is a vibratory sieve equipped with a sieve device having a casing into which a processed material is introduced and a shock absorber that elastically supports the casing. The shock absorber includes a swinging member that is connected to the housing and elastically supports the housing and forms a link mechanism, and a rubber elastic member that is elastically deformed in accordance with the displacement of the swinging member. And when the load of the processing object put into the casing is a load equal to or lower than a preset allowable load, the load of the processing object put into the casing does not come into contact with the casing. It is characterized by comprising a combination with an auxiliary shock absorber that abuts against the casing when the load is larger than the allowable load and elastically supports the casing.

  According to the present invention configured as described above, the processing object thrown into the casing can be separated into different particle sizes by the vibration applied to the casing. At this time, the vibration applied to the housing is absorbed without causing friction between the metals due to the displacement of the link mechanism constituted by the swinging member included in the main shock absorber and the elastic deformation of the rubber elastic member. This makes it possible to achieve low noise.

  In addition, when the load of the processed material put into the casing is a load that is equal to or less than a preset allowable load, the casing is elastically supported only by the main shock absorber, and the spring constant of the main shock absorber is reduced. Accordingly, vibration applied to the housing can be absorbed. Therefore, it is possible to prevent transmission of strong vibration to the structure side that supports the main shock absorber.

  On the other hand, when a processing object with a large load exceeding the allowable load is thrown into the housing, the housing comes into contact with the auxiliary shock absorber, and this housing is elastically supported by the main shock absorber and the auxiliary shock absorber. The vibration applied to the housing can be absorbed according to the large spring constants of the shock absorber and the secondary shock absorber. Therefore, by setting the height of the auxiliary shock absorber in advance in consideration of the elastic deformation limit of the rubber elastic member included in the main shock absorber, the compression displacement of the swing member constituting the link mechanism of the main shock absorber is set. The amount can be suppressed within an allowable displacement amount in which the rubber elastic member included in the main shock absorber does not exceed the elastic deformation limit. As a result, it is possible to prevent the rubber elastic member included in the main shock absorber from being damaged when a processed material having a large load exceeding the allowable load is put into the housing.

  In the vibration sieve according to the present invention, in the above invention, the auxiliary shock absorber sequentially abuts on the casing in accordance with the input of a processed material having a load larger than the allowable load into the casing. It is characterized by comprising a plurality of shock absorbers having different heights, which elastically support the case.

  In the present invention configured as described above, when a processed material having a load slightly larger than the allowable load is put into the housing, the highest buffer among the plurality of buffer devices having different heights constituting the secondary buffer device. The housing first comes into contact with the device, and the housing is elastically supported by the main shock absorber and the highest shock absorber among the sub shock absorbers, and absorbs vibrations applied to the housing according to these large spring constants. it can. In addition, when a processed material with an even larger load than the above-described processed material with an excessive load is put into the housing, the highest shock absorber among a plurality of shock absorbers having different heights constituting the auxiliary shock absorber And the housing comes into contact with the next highest shock absorber, and this housing is elastically supported by the main shock absorber, the highest shock absorber among the secondary shock absorbers, and the next highest shock absorber. The vibration given to the housing can be absorbed according to the spring constant. As described above, according to the present invention, when a processed material having a load larger than the allowable load is put into the casing, the vibration absorption performance corresponding to the magnitude of the load of the processed material can be ensured.

  Moreover, the vibration type sieve according to the present invention is characterized in that, in the above invention, the auxiliary shock absorber includes a rubber elastic member capable of contacting the housing. The present invention configured as described above can absorb the vibration applied to the casing without causing friction between the metals even when the casing abuts against the sub-buffer and the sub-buffer is elastically deformed. Further low noise can be realized.

  Moreover, the vibration type sieve according to the present invention is the above-mentioned invention, wherein the combination of the main shock absorber and the sub shock absorber is divided into two places in the front-rear direction on one side of the casing and on the other side of the casing. It is characterized by being provided at a total of four locations, including two locations in the front-rear direction. According to the present invention configured as described above, the housing can be elastically supported by a combination of the main shock absorbers and the sub shock absorbers provided at four positions, front, rear, left and right, and a stable elastic support structure of the housing can be realized.

  The vibratory sieve according to the present invention includes a traveling body having a pair of track frames and crawler belts, and a main body provided on the traveling body and disposed so as to overlap the upper surface of the crawler belt in plan view. A frame, a rotation shaft disposed on one side of the main body frame, a tilting frame provided to be tiltable with respect to the main body frame, and provided on one side of the main body frame; A first discharge conveyor that discharges the remaining processed product having a large particle size, and a medium particle size that is provided on one side of the main body frame, is sieved by the sieving device, and is smaller than the processed product having a large particle size. A second discharge conveyor for discharging the processed product to the side, and a lowermost upper stream side of the sieving device, and protruding to the other side with respect to the traveling body. A power unit that is suspended and supported on the free end side and has at least an engine inside, is attached to the tilting frame along the lower part of the tilting frame, passes through the upper part of the power unit, and protrudes to the other side of the tilting frame. Provided with a third discharge conveyor for discharging a processed product having a particle size smaller than the processed product having a medium particle size to the side, and the casing of the sieve device. Is composed of a pair of side plates, a front plate and a rear plate, and includes a first support member attached to the tilting frame and a second support member attached to the housing, and the main shock absorber is arranged as described above. Fixing to both the first support member and the second support member, fixing the auxiliary shock absorber to one of the first support member and the second support member; A gap is provided between the other of the first support member and the second support member and the auxiliary shock absorber. The auxiliary shock absorber is higher in height than the first auxiliary shock absorber and the first auxiliary shock absorber. It is characterized by comprising a low second auxiliary shock absorber.

  The present invention configured as described above can be easily moved to a work site or the like for classifying processed materials by driving the traveling body. Moreover, the processed material thrown into the housing | casing can be classified into three types of particle sizes with the vibration given to the housing | casing via the 1st, 2nd, 3rd discharge conveyor. Further, by driving the tilting frame, the posture can be changed to a suitable posture for transportation by the trailer.

  In addition, the height of the auxiliary shock absorber, that is, the size of the gap provided between the other of the first support member and the second support member and the auxiliary shock absorber is determined in advance of the swing member of the link mechanism constituting the main shock absorber. By setting in consideration of the relationship between the amount of compressive displacement and the elastic deformation limit of the rubber elastic member, the amount of compressive displacement of the swing member constituting the link mechanism is set so that the rubber elastic member does not exceed the elastic deformation limit. It can be suppressed within the allowable displacement amount. Thereby, damage to the rubber elastic member included in the main shock absorber can be prevented.

  In addition, when a processed material having a load slightly larger than a preset allowable load is input to the housing, the housing comes into contact with the first sub shock absorber, and the housing includes the main shock absorber and the first sub shock absorber. Can absorb the vibration applied to the housing according to these large spring constants. In addition, when a processed material having a load much larger than the above-described processed material with an excessive load is put into the housing, the housing comes into contact with both the first auxiliary shock absorber and the second auxiliary shock absorber, The housing is elastically supported by the main shock absorber, the first sub shock absorber, and the second sub shock absorber, and can absorb vibrations applied to the housing according to these large spring constants. As described above, according to the present invention, when a processed material having a load larger than the allowable load is put into the housing, two stages of vibration absorption performance can be ensured according to the magnitude of the load of the processed material.

  According to the present invention, a shock absorber that elastically supports a casing into which a workpiece is put is connected to the casing to elastically support the casing, and a swing member that forms a link mechanism and a displacement of the swing member When the load of the main shock absorber including a rubber elastic member that is elastically deformed and the processed material to be loaded into the housing is equal to or less than a preset allowable load, the main shock absorber is not brought into contact with the housing and is loaded into the housing. The link mechanism included in the main shock absorber is composed of a combination with a secondary shock absorber that abuts the housing and elastically supports the housing when the load of the processed material is larger than the allowable load. By the swinging member and the elastic deformation of the rubber elastic member, the vibration applied to the housing can be absorbed without causing friction between metals as in the conventional case, and low noise can be realized.

  Moreover, when the load of the processed material put into the housing is a load equal to or less than a preset allowable load, vibration applied to the housing can be absorbed according to a relatively small spring constant of the main shock absorber. Therefore, transmission of strong vibration to the structure side supporting the main shock absorber can be prevented, durability of the vibration sieving machine can be improved, and vibration can be transmitted to the surrounding ground. It is possible to reduce the adverse effects of vibration on the installation environment.

  Further, when a processed material having a load larger than the allowable load is input to the housing, vibrations applied to the housing can be absorbed according to the large spring constants of the main shock absorber and the sub shock absorber. Therefore, the height of the auxiliary shock absorber is set in consideration of the relationship between the link mechanism constituted by the swing member included in the main shock absorber and the elastic deformation limit of the rubber elastic member, so that it is included in the main shock absorber. It is possible to prevent the rubber elastic member from being damaged and contribute to the improvement of the durability of the vibration type sieve.

  Hereinafter, the best mode for carrying out the vibration type sieve according to the present invention will be described with reference to the drawings.

  FIG. 1 is a side view showing an embodiment of a vibrating sieve according to the present invention, and FIG. 2 is a front view of the embodiment shown in FIG.

  As shown in FIGS. 1 and 2, in this embodiment, the traveling body 1 having a pair of track frames and crawler belts and the traveling body 1 are provided so as to overlap with the upper surface of the crawler belt in plan view. A main body frame 2 and a tilting frame 4 having a pivot shaft 3 disposed on one side of the main body frame 2 and provided so as to be tiltable with respect to the main body frame 2 are provided. On the tilting frame 4, a vibration type sieve device 6 including a shock absorber composed of a main shock absorber 5 and a sub shock absorber 20 described later is disposed. The processed materials classified by the sieving device 6 are, for example, concrete lump, debris, gravel, and the like, and these processed materials are input from the hopper 12.

  Moreover, it is provided on one side of the main body frame 2 and is provided on one side of the main body frame 2 and a first discharge conveyor 7 that discharges the processed material having a large particle size remaining after sieving by the sieving device 6. And a second discharge conveyor 8 that discharges a medium-sized processed product smaller than a large processed product to the side. Further, it is below the uppermost stream in the sieving device 6 and is provided so as to protrude to the other side with respect to the traveling body 1 and is supported by being suspended via a support member 9 provided on the free end side of the tilting frame 4. The power unit 10 including at least the engine is provided. Further, it is attached to the tilting frame 4 along the lower part of the tilting frame 4, is provided so as to protrude through the upper part of the power unit 10 to the other side of the tilting frame 4, and is sieved by the sieving device 6 and has the medium size described above. The 3rd discharge conveyor 11 which discharges the processed material of a particle size smaller than the processed material of the same particle size to the side is provided.

  FIG. 3 is a perspective view showing a sieving device provided in the present embodiment.

  As shown in FIG. 3, the sieving device 6 has a housing 6A into which a processed product is put. The housing 6A is provided on a pair of side plates 6A1 and 6A2 facing each other and on the hopper 12 side. It consists of a front plate 6A3 positioned and a rear plate 6A4 positioned on the second discharge conveyor 8 side. In this housing 6A, a first vibrating floor 6B in which a plurality of finger devices whose arrangement intervals are set wide is arranged in a staircase pattern, and a plurality of finger devices in which the arrangement intervals are set narrow are arranged in a staircase shape. The second vibration floor 6C arranged in the above is arranged.

  Further, as shown in FIG. 3, a first support member, that is, a first support bracket 16 attached to a total of four places, that is, two places on one side of the tilting frame 4 and two places on the other side, and this first support. A second support member, that is, a second support bracket 17, which is attached to four side positions of the housing 6 </ b> A above the first support bracket 16 so as to face each of the brackets 16, is provided. Furthermore, a vibration motor 13 that applies vibration to the housing 6A is disposed at a substantially central position on the side surface of the housing 6A.

  4 is a front view showing the main part of the sieving device shown in FIG. 3, FIG. 5 is a perspective view showing the main part of the sieving device shown in FIG. 3, and FIG. 6 is processed in the casing of the sieving device provided in this embodiment. It is a figure which shows the standby state in which the thing is not thrown in, (a) A figure is a front view, (b) A figure is a side view of (a) figure.

  The shock absorber in the present embodiment, which is included in the sieve device 6 and elastically supports the housing 6A, is composed of the combination of the main shock absorber 5 and the sub shock absorber 20 as described above. As shown in FIGS. 4 to 6, the main shock absorber 5 is connected, that is, fixed to both the first support bracket 16 attached to the tilting frame 4 and the second support bracket 17 attached to the side surface of the housing 6 </ b> A. The pair of oscillating members 5A arranged in a “<” shape that elastically supports the casing 6A and constitutes a link mechanism, and rubber elasticity (not shown) that elastically deforms according to the displacement of these oscillating members 5A Contains members. A main shock absorber 5 including a pair of swing members 5A constituting such a link mechanism and a rubber elastic member that is elastically deformed in accordance with the displacement of the swing member 5A is known. The auxiliary shock absorber 20 does not come into contact with the second support bracket 17 integral with the housing 6A when the load of the processed material put into the housing 6A is equal to or less than a preset allowable load G, and the first 2 When there is an appropriate gap between the lower surface of the support bracket 17 and the load of the processed material put into the housing 6A is larger than the allowable load G, the housing 6A comes into contact with the housing 6A. It consists of what elastically supports 6A.

  The combination of the main shock absorber 5 and the sub shock absorber 20 is provided at four locations around the housing 6A so as to correspond to the combinations of the four first support brackets 16 and the second support brackets 17 facing each other. is there. That is, they are provided at a total of four locations, two in the front-rear direction on one side of the housing 6A and two in the front-rear direction on the other side of the housing 6A. The main shock absorbers 6 included in the respective portions have the same configuration, and each include a link mechanism having the swing member 5A as described above and a rubber elastic member (not shown) that is twisted and deformed in accordance with the displacement of the link mechanism. It is out. As shown in FIG. 3 described above, each of the secondary shock absorbers 20 is provided at a position closer to the center where the vibration motor 13 is disposed. It is provided at the outer position.

  As shown in FIG. 6 (b), the secondary shock absorber 20 abuts against the housing 6A sequentially in accordance with the insertion of a processed material having a load larger than the allowable load G into the housing 6A. A plurality of shock absorbers that elastically support 6A, for example, a first sub shock absorber, and a second sub shock absorber having a height dimension set lower than that of the first sub shock absorber. The first auxiliary shock absorber includes, for example, a pedestal 20A fixed to the tilting frame 4 and an elastic member fixed on the pedestal 20A, for example, a first rubber elastic member 20B1 having a flat surface on the head. Yes. The second auxiliary shock absorber includes the above-described pedestal 20A and an elastic member fixed on the pedestal 20A in parallel with the first rubber elastic member 20B1, for example, a second rubber elastic having a flat surface on the head. It consists of member 20B2. As shown in FIG. 6B, the first rubber elastic member 20B1 constituting the first sub shock absorber is disposed on the side of the housing 6A close to the side plate 6A2, and the second sub shock absorber is provided. The second rubber elastic member 20B2 is disposed on the side far from the side plate 6A.

  The spring constant k of the main shock absorber 5 is set to be relatively small, and each of the spring constant k1 of the first sub shock absorber and the spring constant k2 of the second sub shock absorber constituting the sub shock absorber is the main shock absorber. The spring constants k1 and k2 (> k) are set larger than the spring constant k of 5.

  Further, as shown in FIG. 6B, the flat surface of the head of the first rubber elastic member 20B1 constituting the first auxiliary shock absorber and the second support bracket 17 fixed to the housing 6A. A first gap 18A is provided between the lower surface and the lower surface of the second support bracket 17 between the flat surface of the head of the second rubber elastic member 20B2 constituting the second auxiliary shock absorber. A second gap 18B having a size larger than that of the first gap 18A is provided.

here,
S: A descending amount of the casing 6A according to the spring constant k of the main shock absorber 5 when a processed product having a load equal to or less than the allowable load G is input to the casing 6A. S1: More than the allowable load G to the casing 6A. The housing 6A of the housing 6A according to the spring constant k of the main shock absorber 5 and the spring constant k1 of the first sub shock absorber 20 of the sub shock absorber 20 when a slightly large load G1 (> G) is processed. Lowering amount S2: The spring constant k of the main shock absorber 5 and the second shock absorber 20 when the processed material having a load G2 (>G1> G) much larger than the allowable load G is put into the housing 6A. Decreasing amount H of the housing 6A according to the spring constant k1 of the first auxiliary shock absorber and the spring constant k2 of the second auxiliary shock absorber: the range in which the rubber elastic member included in the main shock absorber 5 does not exceed the elastic deformation limit Thus, the linking member 5A constituting the link mechanism has a maximum displacement that can be compressed and displaced. When the allowable displacement amount of the structure is assumed, the dimension L1 of the first gap 18A formed between the first sub-buffer device of the sub-buffer device 20 and the second support bracket 17 described above, and the second sub-buffer of the sub-buffer device 20 are described. The relationship between the dimension L2 of the second gap 18B formed between the device and the second support bracket 17, the descending amounts S, S1, S2 of the housing 6A and the allowable displacement amount H of the link mechanism is as follows.
H>S2>L2>S1>L1> S
The relationship between the allowable load G of the processed material put into the housing 6A and the spring constant k of the main shock absorber 5, the amount of processed material slightly larger than the allowable load G charged into the housing 6A The relationship between the load G1 (> G), the spring constant k of the main shock absorber 5, the spring constant k1 of the first sub shock absorber of the sub shock absorber 20, and the allowable load G that is put into the housing 6A. The load G2 (>G1> G) of the workpiece, the spring constant k of the main shock absorber 5, the spring constant k1 of the first sub shock absorber of the sub shock absorber 20, and the spring constant of the second sub shock absorber of the sub shock absorber 20 k2, the dimension L1 of the first gap 18A and the dimension L2 of the second gap 18B, that is, the height dimension of the first rubber elastic member 20B1 constituting the first auxiliary shock absorber, and the second auxiliary shock absorber. The height of each second rubber elastic member 20B2 is set in advance. A.

  7-9 is a figure explaining operation | movement of the sieving apparatus 6 with which this embodiment is equipped, FIG. 7 shows the processed material of the load below the allowable load G on the housing | casing 6A of the sieving apparatus 6 with which this embodiment is equipped. FIG. 8A is a front view, FIG. 8B is a side view of FIG. 8A, and FIG. 8 is an allowable load G on the casing 6 </ b> A of the sieving device 6 provided in the present embodiment. It is a figure which shows the state in which the processed material of slightly larger load G1 was thrown in, (a) A figure is a front view, (b) A figure is a side view of (a) figure, FIG. 9 is a sieve apparatus with which this embodiment is equipped. 6A and 6B are views showing a state in which a processed product having a load G2 much larger than the allowable load G is put into the housing 6A of FIG. 6A, FIG. 5A is a front view, and FIG. 5B is a side view of FIG. .

  For example, the traveling body 1 shown in FIG. 1 is driven to travel to a work site where sieving of processed objects is performed, and a hydraulic excavator (not shown) is used for the sieve device 6 in the standby state shown in FIG. 6 at the work site. Then, when a processed object such as a concrete lump accommodated in the bucket is introduced from the hopper 12 and the vibration motor 13 shown in FIG. 3 is driven, the casing 6A of the sieving device 6 vibrates, and the processed object charged thereby. Are classified into different particle sizes through the first vibration floor 6B and the second vibration floor 6C, and discharged by the corresponding ones of the first discharge conveyor 7, the second discharge conveyor 8, and the third discharge conveyor 11. . In this case, for example, a processed product with a small particle size discharged by the third discharge conveyor 11 and a processed product with a medium particle size discharged by the second discharge conveyor 8 are reused as construction materials. The processed material having a large particle size discharged by the first discharge conveyor 7 is crushed by, for example, a crusher (not shown), and is again fed from the hopper 12 to the sieving device 6 for sieving.

  According to the present embodiment, the displacement of the link mechanism constituted by the swing member 5A included in the main shock absorber 5 and the main shock absorber when the processed material is put into the housing 6A of the sieve device 6 as described above. By virtue of elastic deformation, that is, torsional deformation, of a rubber elastic member (not shown) included in the apparatus, vibration applied to the housing 6A can be absorbed without causing friction between metals, thereby realizing low noise.

  Further, when the load of the processed material put into the housing 6A is a load equal to or less than a preset allowable load G, the housing 6A is elastically supported only by the main shock absorber 5 as shown in FIG. The vibration applied to the housing 6A can be absorbed according to the relatively small spring constant k of the main shock absorber 5. Thus, the main shock absorber 5 that absorbs vibration is elastically deformed so as to balance the total load of the load of the housing 6A and the load equal to or less than the allowable load G of the processing object, and the housing 6A is moved from its balance position. The descent is limited so that it does not fall. Therefore, the vibration absorption by the main shock absorber 5 can prevent transmission of strong vibration to the structure including the tilting frame 4 that supports the main shock absorber 5. This can improve the durability of the vibratory sieve shown in FIG. 1 and suppress the transmission of vibration to the surrounding ground to be installed, thereby reducing the adverse effects on the installation environment.

  On the other hand, when a processed material having a large load exceeding the allowable load G is input to the housing 6A, the housing 6A comes into contact with the sub shock absorber 20, and the housing 6A includes the main shock absorber 5 and the sub shock absorber 20. The vibration applied to the housing 6A can be absorbed according to a large spring constant due to the spring constant k of the main shock absorber 5 and the spring constant of the sub shock absorber 20.

  In this case, when a processed material having a load G1 slightly larger than the preset allowable load G is input to the housing 6A, as shown in FIG. 8, the first sub-buffer device of the sub-buffer device 20 is configured. The housing 6A is in contact with the rubber elastic member 20B1, and the housing 6A is elastically supported by the main shock absorber 5 and the first sub shock absorber of the sub shock absorber 20, and the spring constant k of these main shock absorbers 5 and The vibration applied to the housing 6A can be absorbed according to a large spring constant with the spring constant k1 of the first sub shock absorber of the sub shock absorber 20. Thus, the main shock absorber 5 that absorbs vibration and the first sub shock absorber 20 of the sub shock absorber 20 respectively have a total load of the load of the housing 6A and the load G1 that is slightly larger than the allowable load G of the workpiece. It is elastically deformed so as to be balanced, and the lowering is restricted so that the housing 6A does not fall below the balance position.

  Further, when a processed material having a load G2 that is much larger than the processed material having an excessive load G1 described above is input to the housing 6A, as shown in FIG. 9, the first auxiliary buffer device of the auxiliary buffer device 20 is used. The housing 6A is in contact with both the first rubber elastic member 20B1 constituting the first rubber elastic member 20B2 and the second rubber elastic member 20B2 constituting the second auxiliary shock absorber. The housing 6A includes the main shock absorber 5 and the secondary shock absorber 20. Elastically supported by the first auxiliary shock absorber and the second auxiliary shock absorber, and the spring constant k of the main shock absorber 5, the spring constant k1 of the first auxiliary shock absorber of the auxiliary shock absorber 20, and the second auxiliary shock absorber. The vibration applied to the housing 6A can be absorbed according to a large spring constant with the spring constant k2. Thus, each of the main shock absorber 5 that absorbs vibration, the first sub shock absorber of the sub shock absorber, and the second sub shock absorber balances the total load of the load of the housing 6A and the large load G2 of the processing object. Thus, the lowering is restricted so that the housing 6A does not fall below its balance position.

  As described above, in the present embodiment, when a processed product having loads G1 and G2 larger than the allowable load G is input to the housing 6A, the two steps are performed according to the magnitudes of the loads G1 and G2 of the processed product. Vibration absorption performance can be ensured, and highly accurate vibration control according to the loads G1 and G2 of the processed material put into the housing 6A can be realized.

  Further, the first gap formed in advance between the height of the auxiliary shock absorber 20, that is, the first rubber elastic member 20B1 constituting the first auxiliary shock absorber and the second support bracket 17 fixed to the housing 6A. The main shock absorber 5 has a dimension L1 of 18A and a dimension L2 of the second gap 18B formed between the second rubber elastic member 20B2 constituting the second auxiliary shock absorber and the second support bracket 17. Since the allowable displacement amount of the swing member 5A of the link mechanism is set so as not to exceed the elastic deformation limit of a rubber elastic member (not shown) constituting the main shock absorber 5, the rubber included in the main shock absorber 5 Damage to the elastic member can be prevented, which contributes to the improvement of the durability of the vibratory sieve shown in FIG.

  In addition, according to the present embodiment, the first rubber elastic member 20B1 and the second rubber elastic member 20B2 in which each of the first sub shock absorber and the second sub shock absorber of the sub shock absorber 20 can come into contact with the housing 6A. Therefore, even when the housing 6A is elastically deformed by the first rubber elastic member 20B1 and the second rubber elastic member 20B2 of the auxiliary shock absorber 20, the housing 6A does not rub against each other. The given vibration can be absorbed and further low noise can be realized.

  Further, in the present embodiment, the combination of the main shock absorber 5 and the sub shock absorber 20 is a total of two places in the front-rear direction on one side of the housing 6A and two places in the front-rear direction on the other side of the housing 6A. Since it is attached at four locations, the housing 6A can be elastically supported by the combination of the main shock absorber 5 and the sub shock absorber 20 provided at the four positions on the front, rear, left and right around the housing 6A. An elastic support structure of 6A can be realized.

  Moreover, since this embodiment is provided with the traveling body 1 as shown in FIG. 1, the traveling body 1 can be easily moved to a work site or the like for classifying processed materials. In addition, the processed material put into the housing 6A via the first, second, and third discharge conveyors 7, 8, and 13 has three kinds of particle sizes according to the vibration applied to the housing 6A. Can be classified. Further, by tilting the tilting frame 4, it is possible to change the posture to a suitable posture when transported by the trailer.

  Further, in the present embodiment, as shown in FIGS. 6 to 9, the higher first auxiliary shock absorber among the auxiliary shock absorbers 20 is arranged on the housing 6 </ b> A side than the lower second auxiliary shock absorber. Therefore, as shown in FIG. 8B, when the housing 6A comes into contact with the auxiliary shock absorber 20, first, the higher first auxiliary shock absorber arranged on the housing 6A side is used. Abut. Therefore, the bending moment acting on the second support bracket 17 fixed to the housing 6A can be reduced as compared with the case where the lower second auxiliary shock absorber is disposed on the housing 6A side. Accordingly, the second support bracket 17 with reduced strength can be provided, which contributes to a reduction in manufacturing cost.

  In addition, since the present embodiment includes the auxiliary shock absorber 20 that comes into contact with the housing 6A when an excessively large load G1, G2 that exceeds the allowable load G is input to the housing 6A, the housing 6A is provided. When the processed material is introduced into the casing 6A and the casing 6A is vibrated, the casing 6A is supplied to the auxiliary shock absorber 20, that is, the first rubber elastic member 20B1 constituting the first auxiliary shock absorber, or the second auxiliary shock absorber. By judging whether or not the second rubber elastic member 20B2 constituting the apparatus is contacted by visual observation, it is determined whether or not an excessively large load G1, G2 that exceeds the allowable load G has been applied to the housing 6A. Can do. In such a case, the load of the processed material put into the housing 6A can be made equal to or less than the allowable load G by adjusting the amount of the processed material put into the housing 6A. As a result, the load applied to the housing 6A and the main shock absorber 5 can be maintained at an appropriate load, and the number of operations of the sub shock absorber 20 can be reduced, thereby improving the durability of the vibratory sieve.

  Further, in the present embodiment, the load of the workpiece to be loaded into the housing 6A exceeds the allowable load G, such as the loading of the workpiece into the housing 6A using the hydraulic excavator described above. It is suitable for classification of the processed product as obtained.

  In the above embodiment, the auxiliary shock absorber 20 is constituted by two shock absorbers of the first auxiliary shock absorber and the second auxiliary shock absorber having different heights. You may comprise by. Moreover, you may comprise by three or more shock absorbers.

  Similarly, in the above, two main shock absorbers 5 are provided, but this main shock absorber 5 may be simply provided in consideration of the load of the workpiece to be put into the housing 6A. Three or more may be provided.

  In the above description, each of the first auxiliary shock absorber and the second auxiliary shock absorber constituting the auxiliary shock absorber 20 includes the first rubber elastic member 20B1 and the second rubber elastic member 20B2. However, the auxiliary shock absorber 20 may be constituted by a coil spring or may be constituted by a synthetic resin having elasticity.

  Further, in the above, the sub shock absorber 20 is disposed at a position near the center of the housing 6A and the two main shock absorbers 5 are disposed outside the sub shock absorber 20 in each of the four locations. The sub shock absorber 20 may be disposed between the main shock absorbers 5, and the two main shock absorbers 5 are disposed near the center of the housing 6 </ b> A, and the sub shock absorbers 20 are disposed in the two main shock absorbers 5. It may be configured to be arranged at the outer position.

  Moreover, in the above, as shown in FIGS. 6 to 9, each of the head of the first rubber elastic member 20B1 and the head of the second rubber elastic member 20B2 constituting the first sub shock absorber of the main shock absorber 20 is flat. Although it is formed on the surface, it may be formed on a convex curved surface, a spherical surface or the like instead of forming on such a flat surface.

  In the above description, the first rubber elastic member 20B1 constituting the first sub shock absorber of the sub shock absorber 20 and the second rubber elastic member 20B2 constituting the second sub shock absorber are provided separately. May be provided integrally so that one head portion is formed, surfaces having different stepped heights are formed on the head portion, and the housing 6A can be brought into contact with these surfaces.

  Further, in the above, the lower end of the auxiliary shock absorber 20 is fixed to the first support bracket 16 attached to the tilting frame 4, and between the upper end of the auxiliary shock absorber 20 and the lower surface of the second support bracket 17 attached to the housing 6 </ b> A. In contrast, the first gap 18A and the second gap 18B are provided. On the contrary, the upper end of the auxiliary shock absorber 20 is fixed to the second support bracket 17, and the lower end of the auxiliary shock absorber 20 is The first gap 18 </ b> A and the second gap 18 </ b> B may be provided between the upper surface of the first support bracket 16.

  In addition to the configuration of the above-described embodiment, a detection sensor that detects that the housing 6A is in contact with the auxiliary shock absorber 20 and a notification device such as an alarm lamp that is turned on in response to a signal from the detection sensor. You may make the structure provided. Thus, in the configuration including the detection sensor and the notification device, the contact between the housing 6A and the auxiliary shock absorber 20 can be automatically known by notification of the notification device without visual observation. It can be ascertained reliably whether or not the excessive loads G1 and G2 that exceed the allowable load G have been put into the housing 6A.

It is a side view which shows one Embodiment of the vibration type sieve which concerns on this invention. It is a front view of this embodiment shown in FIG. It is a perspective view which shows the sieve apparatus with which this embodiment is equipped. It is a front view which shows the principal part of the sieve apparatus shown in FIG. It is a perspective view which shows the principal part of the sieve apparatus shown in FIG. It is a figure which shows the standby state in which the processed material is not thrown into the housing | casing of the sieve apparatus with which this embodiment is equipped, (a) A figure is a front view, (b) A figure is a side view of (a) figure. It is a figure which shows the state by which the processed material of the load below allowable load was thrown into the housing | casing of the sieve apparatus with which this embodiment is equipped, (a) A figure is a front view, (b) A figure is a side view of (a) figure It is. It is a figure which shows the state in which the processed material of the load a little larger than an allowable load was thrown into the housing | casing of the sieve apparatus with which this embodiment is equipped, (a) A figure is a front view, (b) A figure is a side of (a) figure FIG. It is a figure which shows the state by which the processed material of much larger load than allowable load was thrown into the housing | casing of the sieve apparatus with which this embodiment is equipped, (a) A figure is a front view, (b) A figure is (a) figure. It is a side view.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Traveling body 2 Main body frame 3 Rotating shaft 4 Tilt frame 5 Main shock absorber 5A Oscillating member 6 Sieve device 6A Case 6A1 Side plate 6A2 Side plate 6A3 Front plate 6A4 Rear plate 6B First vibration floor 6C Second vibration floor 7 First discharge conveyor 8 Second discharge conveyor 9 Support member 10 Power unit 11 Third discharge conveyor 12 Hopper 13 Vibration motor 16 First support bracket (first support member)
17 Second support bracket (second support member)
18A First gap 18B Second gap 20 Sub shock absorber 20A Pedestal (first sub shock device) (second sub shock device)
20B1 first rubber elastic member (first sub shock absorber)
20B2 second rubber elastic member (second auxiliary shock absorber)

Claims (5)

In a vibratory sieving machine provided with a sieving apparatus having a casing into which a processed product is charged and a shock absorber that elastically supports the casing,
The shock absorber is
A main shock absorber including a swinging member connected to the casing and elastically supporting the casing and constituting a link mechanism, and a rubber elastic member elastically deforming according to the displacement of the swinging member;
When the load of the processing object put into the casing is a load equal to or less than a preset allowable load, the load of the processing object put into the casing does not come into contact with the casing, and the allowable load A vibratory sieving machine comprising a combination with an auxiliary shock absorber that abuts against the casing when the load is larger than that and elastically supports the casing. In the vibratory sieve according to claim 1,
The auxiliary shock absorber is a plurality of shock absorbers having different heights that sequentially abut against the housing and elastically support the housing in response to the input of a processed material having a load larger than the allowable load into the housing. A vibrating sieve machine comprising: In the vibratory sieve according to claim 1,
The sub shock absorber includes a rubber elastic member capable of coming into contact with the casing. In the vibratory sieve according to claim 1,
The combination of the main shock absorber and the sub shock absorber is provided at a total of four locations, two in the front-rear direction on one side of the housing and two in the front-rear direction on the other side of the housing. Vibrating sieving machine. In the vibratory sieve according to claim 1,
A traveling body having a pair of track frames and crawler belts;
A main body frame provided on the traveling body and disposed so as to overlap the upper surface of the crawler belt in plan view;
A tilting frame provided on one side of the main body frame, the tilting frame provided so as to be tiltable with respect to the main body frame;
A first discharge conveyor which is provided on one side of the main body frame and discharges a processed product having a large particle size left after being sieved by the sieving device;
A second discharge conveyor that is provided on one side of the main body frame, is sieved by the sieving device, and discharges a medium-sized processed product smaller than the large-sized processed product to the side;
A power unit that is below the uppermost stream side in the sieving device and is provided to project to the other side with respect to the traveling body, is suspended and supported on the free end side of the tilting frame, and includes at least an engine inside ,
Attached to the tilting frame along the lower part of the tilting frame, provided through the upper part of the power unit and protruding to the other side of the tilting frame, sieved by the sieving device, and the medium-sized particle size A third discharge conveyor for discharging a processed product having a particle size smaller than the processed product to the side,
The casing of the sieve device comprises a pair of side plates, a front plate and a rear plate,
A first support member attached to the tilting frame, and a second support member attached to the housing,
Fixing the main shock absorber to both the first support member and the second support member;
Fixing the auxiliary shock absorber to one of the first support member and the second support member, and providing a gap between the other of the first support member and the second support member and the auxiliary shock absorber;
The sub-buffer device comprises a first sub-buffer device and a second sub-buffer device having a height lower than that of the first sub-buffer device.

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