JP4641365B2 - Crusher - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a crushing apparatus, and relates to a crushing apparatus provided with a split type case.
[0002]
[Background]
2. Description of the Related Art Conventionally, crushing apparatuses that crush concrete lumps or asphalt lumps from a quarry or building demolition site into a predetermined size are known.
In such a crushing apparatus, an object to be crushed is input from a case inlet, and crushing is performed in the case.
[0003]
The case of the crushing device is usually a split type composed of a fixed case and a movable case, and the movable case is attached to the fixed case, for example, so as to be rotatable. At this time, each of the fixed case and the movable case is provided with flanges that come into contact with each other through the dividing lines, and these flanges are fixed with bolts and nuts.
Then, the movable case is closed to fix the flanges, and the crushing operation is performed in this state. Also, by removing the bolts and nuts and opening the movable case upward, the inside of the case is repaired and inspected.
[0004]
[Problems to be solved by the invention]
By the way, in order to clear the height restriction at the time of transportation of the crushing device, the movable case is attached to the upper side of the fixed case without any gaps, and the movable case is operated to sink downward with respect to the fixed case. A case that can reduce the height of the entire case is desired.
[0005]
However, in the conventional structure in which the fixed case and the movable case are fixed with the flanges in contact with each other, the movable case can be operated above the fixed case but cannot be operated downward. It was difficult to reduce the height of the entire case.
In addition, it is desired to shorten the crushing device in the longitudinal direction (for example, a direction orthogonal to the rotation axis of the rotor in the case of an impact crusher) and to effectively use a loading platform such as a truck.
[0006]
The object of the present invention is to ensure that not only the movable case is moved away from the fixed case, but also that the movable case is sunk into the fixed case, and seating or fixing can be achieved without any gaps. It is providing the crushing apparatus which can suppress an enlargement.
[0007]
[Means for solving the problems and effects]
  The crushing device according to claim 1 of the present invention comprises:A box-shaped fixed case having a side surface portion on the fixed case side and a lid-shaped movable case having a side surface portion on the movable case are provided, and the movable case is rotated up and down by pin bonding to the upper side of the fixed case. In the crushing apparatus having a split-type case that is movably attached, the movable case operates such that the movable case side surface portion overlaps the fixed case side surface portion on the outer side, In each of the fixed case side surface portion and the movable case side surface portion,Fixed case side mounting part and movable case side mounting part at a position where they do not interfere even if they operate so as to overlap.Is provided,The fixed case side mounting portion and the movable case side mounting portionThese mounting partsIntermediate attachment that can be detachably attached to bothIn a state where the intermediate fixture is removed from the fixed case side mounting portion, the movable case is depressed more than the position where the movable case is fixed to the fixed case mounting portion via the intermediate fixture. Works untilIt is characterized by that.
[0008]
In such a crushing device, the movable case side mounting portion is located at a position where the movable case and the fixed case do not interfere with each other even if the movable case and the fixed case overlap with each other. If the fixed state between the movable case and the fixed case is released by removing the intermediate fixture from one or the other of the case side mounting parts, or by removing it from both, etc., the movable case is fixed relative to the fixed position of the fixed case. It becomes possible to operate.
At this time, since the fixed case and the movable case are fixed via the intermediate fixture, compared to the case where the fixed case and the movable case are directly fixed, the amount of the intermediate fixture, the fixed case and the movable case The gap between them can be increased, and interference between the mounting parts can be more reliably prevented during operation of the movable case, and the operation can be performed smoothly.
In addition, even if there is a gap between the fixed case side mounting part and the movable case side mounting part to avoid mutual interference, if the movable case is attached to the fixed case via an intermediate fixture, the movable case and the fixed case Is fixed without gaps, and the dust resistance is improved.
Furthermore, the intermediate fixture is only interposed between the fixed case and the movable case, and the structure of the holding part of the movable case with respect to the fixed case is simplified. This makes it possible to effectively use cargo space such as trailers during transportation.
As described above, the object of the present invention can be achieved.
[0009]
In the present invention,A receiving portion for supporting the intermediate fixture is provided at or near the fixed case side mounting portion.Is desirable.
  According to such a crushing apparatus, since the intermediate fixture is supported by the receiving portion of the fixed case side mounting portion, the intermediate fixture, and hence the heavy movable case, is supported by the fixed case side mounting portion. Therefore, a large load due to the movable case does not directly act on the fixing fixture (for example, a bolt) of the fixed case, and the fixing fixture can be made small, and the attaching operation and the removing operation are facilitated. Furthermore, since it is only necessary to adopt a fixing fixture that can fix each other in the movable case side mounting portion and the intermediate fixture of the movable case, a large fixing fixture that takes into account the large load of the movable case is also used. It is not necessary, and the installation work and the removal work become easy.
[0010]
  Claim 2Crushing equipmentClaim 1In the crushing device described in the item 1, the intermediate fixture is slidable in a direction away from the fixed case side mounting portion.
  According to such a crushing apparatus, when removing the intermediate fixture from the fixed case, the intermediate fixture may be slid to be separated from the fixed case side mounting portion. When attaching to the fixed case, the intermediate fixture may be slid from the separated state and brought close to the fixed case side mounting portion, and the intermediate fixture can be easily attached to and detached from the fixed case.
  The crushing device according to claim 3 is the crushing device according to claim 1 or 2, wherein an upper edge of the movable case is substantially horizontal in a state where the movable case is moved to the submerged position. It is characterized by.
[0011]
A crushing device according to a fourth aspect is the crushing device according to any one of the first to third aspects, wherein the fixed case and the movable case are provided with opposing surface portions that are opposed to each other with a space therebetween. A sealing material that functions when the movable case is in a crushing work posture is interposed between the opposing surface portions.
According to such a crushing device, there is no fear that dust or the like generated inside the case leaks out from the gap or the like by the sealing material disposed between the opposing surfaces of the fixed case and the movable case.
In this case, the sealing material may be positioned above the fixed case side mounting portion and the movable case side mounting portion, so that dust is attached to the mounting portion between each mounting portion and the intermediate mounting tool. Since it does not fall down, dust can be prevented from entering between the members, and there is no fear of reducing the sealing performance between the members in the mounting portion.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a side view showing the entire mobile crusher 1 according to the present embodiment, FIG. 2 is a view of the mobile crusher 1 as viewed from the input side of an object to be crushed, and FIG. 3 is a mobile crusher. 1 is a plan view of FIG.
[0013]
[Overview of mobile crusher]
In FIG. 1 thru | or FIG. 3, the mobile crusher 1 is the structure which mounted the working machine 3 and the power part 4 on the base part 2. As shown in FIG.
The base unit 2 includes a pair of crawler type traveling units 10 for self-propelling in the work site, and a frame 20 to which the traveling unit 10 is attached and the working machine 3 and the power unit 4 are mounted. It has.
The work machine 3 includes an impact crusher (hereinafter referred to as a crusher) 30 as a crushing device mounted substantially in the center of the base unit 2, a crushing object supply unit 40 that supplies the crushing material to the crusher 30, and crushing And a discharge belt conveyor 50 for discharging the crushed material.
The power unit 4 is a power source such as the traveling unit 10, the crusher 30, and the discharge belt conveyor 50. The engine (not shown), a hydraulic pump driven by the engine, and a control valve that controls hydraulic oil from the hydraulic pump. Etc. On the upper side of the power unit 4, a travel lever 4 </ b> A that performs the traveling operation and turning operation of the mobile crusher 1 and an upper control box (not shown) in which traveling indicators are arranged are provided. A side control box (not shown) for operating the work machine 3 is provided in the vicinity of the side.
[0014]
Below, for convenience of explanation, the discharge belt conveyor 50 side of the mobile crusher 1 is defined as the front side (right side in FIG. 1), and the material supply unit 40 side is defined as the rear side (left side in FIG. 1). Each part will be described with the direction orthogonal to the direction (left-right direction in FIG. 2) as the horizontal direction.
[0015]
The traveling unit 10 is provided on a crawler frame 22 that forms a part of the frame 20, and includes a hydraulic motor 11 on the front side of the crawler frame 22. An endless crawler belt 13 driven by the hydraulic motor 11 is wound around the sprocket 11A of the hydraulic motor 11 and the idler 12 on the other end side. The hydraulic motor 11 is driven by hydraulic pressure from a hydraulic pump of the power unit 4 via a control valve.
[0016]
The frame 20 includes a pair of the crawler frames 22 and a main frame 21 to which these crawler frames 22 are attached. On the main frame 21, a hopper frame 23 for placing the object supply unit 40 and an engine frame 24 for placing the power unit 4 are fixed.
[0017]
As shown in FIGS. 4 and 5, the crusher 30 includes a case 31 having an input port 31 </ b> A for an object to be crushed. In the case 31, a rotor 32 having a rotor main body 321 and a striking plate 322, and an impact A repulsion plate 33 is disposed with a clearance from the rotation locus A at the tip of the plate 322.
In such a crusher 30, the object to be crushed introduced from the introduction port 31 </ b> A is crushed by being struck by the rotating striking plate 322, or being blown at the impact and colliding with the repulsion plate 33. Is discharged onto the discharge belt conveyor 50 from the discharge port 31B.
[0018]
The crushed object supply unit 40 includes a hopper 41 on which the crushed object is loaded, and a grizzly (sieving) feeder 42 disposed below the hopper 41 with a slight gap.
The hopper 41 is supported on the hopper frame 23 of the frame 20 via the four-side support portions 411, and greatly expands upward.
The feeder 42 is a vibration type having a vibration device 421 driven by hydraulic pressure from the power unit 4 and is supported on the hopper frame 23 via a plurality of coil springs 422 so as not to contact the hopper 41. Vibrate to feed the object to be crushed to the crusher 30 side. At this time, as shown by a two-dot chain line in FIG. 4, the end portions of the hopper 41 and the feeder 42 are squeezed into the inlet 31 </ b> A of the crusher 30, and the object to be crushed is reliably put into the crusher 30. .
The feeder 42 has a function of supplying a material to be crushed to the crusher 30 and a function of selecting a small input that does not need to be crushed by a comb-shaped grizzly portion 423 (FIG. 3) and sifting it downward. . The sieved input falls on another belt conveyor 43 shown in FIGS. 1 to 3 or is discharged, or falls on the discharge belt conveyor 50 by switching a damper (not shown), together with the crushed material. Discharged.
[0019]
The discharge belt conveyor 50 has a base end side (left side in FIG. 1) in the transfer direction located below the frame 20 and is discharged as needed from the crusher 30 discharged from the discharge port 31B of the crusher 30. The discharged material (same as the input material) from the grizzly part 423 is transferred to the tip side (right side in FIG. 1). Further, the discharge belt conveyor 50 has a three-stage folding structure, and the discharge height at the front end side is sufficiently secured, so that the operation can be reliably performed without a secondary belt conveyor. The discharge belt conveyor 50 is also driven by the hydraulic pressure from the power unit 4.
In the middle of the discharge belt conveyor 50, a magnetic separator 51 is arranged so as to be supported by the frame 20, and a metal material such as a reinforcing bar, which is produced when the concrete block is crushed, is magnetically attached with a permanent magnet. Discharge.
[0020]
[Explanation of crusher]
Hereinafter, the crusher 30 will be described in detail with reference to FIGS. 4 and 5.
First, the rotor 32 of the crusher 30 is supported by bearings (not shown) outside the case 31 at both ends in the lateral direction, and includes a pulley 34 at one end. A hydraulic motor 35 indicated by a two-dot chain line is disposed outside the case 31, and a V belt 37 is wound around the pulley 36 and the pulley 34 of the hydraulic motor 35. That is, the rotor 32 is rotationally driven by the hydraulic motor 35 via the V belt 37. The hydraulic motor 35 is also driven by the hydraulic pressure from the hydraulic pump of the power unit 4 via the control valve.
[0021]
The striking plate 322 of the rotor 32 is continuously provided over a range slightly narrower than the lateral width of the case 31 along the lateral direction (axial direction of the rotor main body 321), and a plurality of striking plates 322 at equal intervals in the circumferential direction of the rotor main body 321 ( In the present embodiment, there are four projections). Further, the striking plate 322 is detachable, and can be used by being reversed or replaced with a new striking plate according to its wear state.
[0022]
Next, in FIG. 5, the repulsion plate 33 of the crusher 30 includes a first repulsion plate 331, a second repulsion plate 332, and a third repulsion plate in order from the insertion port 31 </ b> A (FIG. 4) along the rotation direction of the rotor 32. 333.
[0023]
The first repulsion plate 331 is larger than the others, and can reliably receive a large object to be crushed at the beginning. A pair of locking projections 331A are provided on the back side of the first repulsion plate 331, and the locking projections 331A are locked between the locking portions 334A on the lower side of the first arm 334. At the same time, it is held by a screw-type fixing device 334B provided in one of the locking portions 334A and a stopper 334C provided on the end portion in the lateral direction. A plurality of such first rebound plates 331 are arranged in close contact with each other in the lateral direction, and by releasing the fixing tool 334B and the stopper 334C, each can be inserted and removed in the lateral direction, and the worn state Depending on the situation, it can be reversed or used with a new rebound plate.
[0024]
The second and third repulsion plates 332 and 333 have the same shape, and between the locking portions 335A provided on the lower side of the second arm 335 via the locking projections 332A and 333A on the back side, respectively. It is held by the fixture 335B and the stopper 335C. These second and third repulsion plates 332 and 333 are also insertable / removable with respect to the second arm 335, and are exchanged according to the wear state. However, the second and third repulsion plates 332 and 333, which are not so large, are not used by being reversed because wear due to the crushing operation occurs uniformly, but as with the first repulsion plate 331, they are reversed. It may be configured to be possible.
[0025]
A pair of first and second arms 334 and 335 are arranged side by side in the lateral direction, and are connected integrally by connecting plates 334D and 335D and connecting bars 334E and 335E, respectively. The upper sides of the first and second arms 334 and 335 are pivotally supported on the upper side of the case 31 by a rotation shaft 38. On the other hand, the lower sides of the first and second arms 334 and 335 are suspended by the first and second gap adjusting devices 60 (61 and 62) that are retractable and attached to the connecting bars 334E and 335E. Yes. Each second arm 335 is disposed inside the pair of first arms 334.
[0026]
Such first and second gap adjusting devices 61 and 62 have a structure that expands and contracts by driving the hydraulic motor 64 of the drive unit 63 on the upper end side, for example, a screw having a nut-like member and a bolt-like member. Formulas are adopted. By extending and contracting the first and second gap adjusting devices 61 and 62, the first and second arms 334 and 335 rotate about the rotation shaft 38, and the rotation trajectory A and the first to the first to first striking plates 322 are rotated. It is possible to adjust the sizes of the gaps C1, C2, and C3 between the third repulsion plates 331 to 333.
[0027]
The second gap adjustment device 62 adjusts the gap C3 in the third repulsion plate 333 among the second and third repulsion plates 332 and 333. This is because adjusting the gap C3 is important in determining the final particle size of the crushed material. For this reason, the adjustment of the gap C2 in the second repulsion plate 332 provided on the same second arm 335 is automatically performed by adjusting the gap C3 from the positional relationship between the second and third repulsion plates 332 and 333. Complete.
[0028]
The first arm 334 is provided with a bending type restriction link 336 in order to restrict the amount of rotation of the first gap adjusting device 61 in the extending direction. According to the restriction link 336, excessive extension of the first gap adjusting device 61 is prevented, and the amount of rotation of the first arm 334 is restricted. On the other hand, the rotation amount of the second arm 335 is restricted by the contact with the first arm 334.
Further, in the first arm 334, a liner 337 that can be inserted and removed is attached above the first repulsion plate 331 to protect the first arm 334 from an object to be crushed.
[0029]
[Detailed explanation of crusher case]
Subsequently, the case 31 of the crusher 30 will be described in detail with reference to FIGS. 4 to 6.
In FIG. 6, the case 31 is a split type having a fixed case 70 fixed to the frame 20 (FIG. 1) and a movable case 80 attached to the upper side of the fixed case 70. As shown in FIG. 5, the movable case 80 includes first to third repulsion plates 331 to 333, first and second arms 334 and 335, and first and second gap adjusting devices 61 and 62. It is attached.
[0030]
The fixed case 70 includes a front portion 71 provided on the lower side of the insertion port 31 </ b> A, a fixed case side surface portion 72 provided on both sides in the lateral direction, and a back surface provided at a position facing the front portion 71. The upper part 901A like the conventional impact crusher 9 shown in FIG. 23 does not exist.
[0031]
The case 900 of the conventional impact crusher 9 will be described briefly. This case 900 is a split type having a fixed case 901 and a movable case 902 pin-bonded to the fixed case 901 as shown in FIG. An inlet 903 is provided on the fixed case 901 side. In such a case 900, a dividing line SS of the fixed case 901 and the movable case 902 is provided so as to divide into left and right, and the movable case 902 is rotated around the pin 905 at the joint portion by the hydraulic cylinder 904. . If the movable case 902 is separated from the dividing line SS and is opened, it is possible to carry out repair / inspection in the impact crusher.
When the movable case 902 is opened, the upper surface portion 901A exists on the fixed case 901 side, and the height dimension of the case 900 is kept the same regardless of whether the movable case 902 is opened or closed. In a state where the movable case 902 is opened, the movable case 902 rotates so as to protrude to the opposite side of the insertion port 903 with the lower pin 905 as a fulcrum.
The above is the conventional crusher 9.
[0032]
Returning to the crusher 30 of the present embodiment, two inspection doors 720, 721, 722, and 723 are provided on each of the fixed case side surface portions 72 of the fixed case 70, and these inspection doors 720 to 723 are provided. To check the size of the above-mentioned gaps C1 to C3, check the wear state of the striking plate 322 and the first to third repulsion plates 331 to 333, and further, on the bottom side of the case 31 It is possible to check the clogging condition of the crushed material at the discharge port 31B. However, the size, number, etc. of the inspection doors may be arbitrarily determined for the implementation.
[0033]
Further, in the fixed case side surface portion 72 shown in FIG. 4, the upper edge 724 (illustrated by a dotted line) is positioned downward from the first horizontal portion 724A at the highest position and away from the charging port 31A. The inclined portion 724B and the second horizontal portion 724C at the lowest position are formed in a step shape. Such an upper edge 724 is attached so that the movable case 80 covers the entire upper side of the fixed case 70, and therefore, below the upper edge (ridge line portion) 820 of the movable case 80 in the state shown in FIG. 4. Is located.
[0034]
An upper portion of the upper edge 724 on the back surface 73 side, that is, on the side opposite to the insertion port 31A of the case 31 and on the upper side of the case 31 as a whole, is a rotation that pivotally supports the movable case 80. A moving mechanism 39 is provided.
As shown in FIG. 7, the rotating mechanism 39 is provided on the fixed case side cylindrical portion 391 provided on the fixed case 70 and on the movable case 80 side, and on the outside of the fixed case side cylindrical portion 391. The movable case side cylindrical portion 392 and the case support pins 393 inserted through these cylindrical portions 391 and 392 are configured, and the flange portion 393A of the case support pin 393 is formed on the movable case side. It is fixed to the cylindrical portion 392 with a bolt 393B. By such a rotation mechanism 39, the movable case 80 rotates about the case support pin 393 as a rotation axis.
[0035]
At this time, the fixed case 70 and the movable case 80 are connected by the hydraulic cylinder 394 slightly closer to the insertion port 31 </ b> A of the rotation mechanism 39. The hydraulic cylinder 394 is operated when the movable case 80 is rotated, and assists the rotating operation of the movable case 80 that is heavy. Such a hydraulic cylinder 394 is arranged such that the upper side is a cylinder and the lower side is a rod, preventing dust and the like from accumulating on the rod side end of the cylinder, and improving the durability of packing and the like. It has been.
[0036]
FIGS. 8A and 8B show the structure of the connecting portion between the hydraulic cylinder 394 and the movable case 80. As shown in the figure, the lower edge 821 of the movable case 80 is provided with two connecting pieces 821A protruding downward, and an attachment ring 394A of the hydraulic cylinder 394 is inserted between these connecting pieces 821A. Is inserted through a cylinder pin 395. The cylinder pin 395 is fixed to the connecting piece 821A with a single bolt 395B passing through the flange portion 395A.
[0037]
7 and 8B, a metal liner 311 is stretched over the inner surface of the fixed case 70 to protect the inner surface from collisions with objects to be crushed. Such a liner 311 is fixed with a bolt or the like from the outside penetrating the fixed case side surface portion 72. However, even on the inner surface of the fixed case 70, the object to be crushed is less likely to enter the front (back side) of the first to third repulsion plates 331 to 331. The liner 311 is not provided. Of course, on the inner surface of the movable case 80, the liner 311 is similarly stretched in a portion where the object to be crushed may collide.
[0038]
In the fixed case side surface portion 72 on both sides of the fixed case 70 as described above, a fixed portion protruding outward along the upper edge 724 is located immediately below the upper edge 724 as shown in FIGS. A case side mounting portion 74 is provided. The fixed case side mounting portion 74 is formed by welding of another member or the like, and is used as a portion for attaching an intermediate fixture 90 described later, and reinforces the thin plate-like fixed case side surface portion 72. In order to sufficiently engrave screw holes for bolts 93 (fixing fixtures) used for fixing 90, the plate thickness of the side surface portion 72 of the fixed case is supplemented.
[0039]
On the other hand, as shown in FIGS. 4 and 6, the movable case 80 includes a top surface 81 provided so as to cover the upper opening of the fixed case 70 and a movable vertically provided on both lateral sides of the top surface 81. The lid 31 has a case-side side surface portion 82, and forms a part of the insertion port 31 </ b> A at the rear edge of the movable case 80 itself.
[0040]
The portion of the movable case 80 that forms the inlet 31A is provided so as to extend toward the crushed object supply unit 40 as compared to the conventional case 900 (FIG. 20), and this extended portion is the movable case 80. And the eaves part 83 (FIG. 4).
The case 31 of this embodiment is larger than the conventional case 900, has a large height dimension, and a large opening area of the inlet 31A. For this reason, at the time of the crushing operation, a large object to be crushed can be introduced into the charging port 31A, but the object to be crushed in the case 31 can easily jump out of the charging port 31A. Therefore, by providing the eaves 83 extending toward the feeder 42, it is possible to effectively prevent the object to be crushed from hitting the eaves 83 and jumping out.
Further, as shown only in FIG. 4, the eaves 83 is suspended with an iron chain 831 and a rubber-made hot-water-like drooping member 832 so as to close the insertion port 31 </ b> A. Prevents scattering of objects more reliably.
[0041]
The upper surface portion 81 of such a movable case 80 is gradually expanded toward the insertion port 31A, thereby realizing a larger insertion port 31A. Further, as shown in FIG. 5, a pair of insertion holes 81A through which the first and second gap adjusting devices 61 and 62 are inserted are formed in the upper surface portion 81 at a position opposite to the insertion port 31A. The drive units 63 of the first and second gap adjusting devices 61 and 62 are attached around the insertion holes 81A.
[0042]
The movable case side surface portion 82 is positioned outside the fixed case side surface portion 72 of the fixed case 70, and the lower edge 821 portion of the movable case side surface portion 82 is the upper edge above the fixed case side surface portion 72. It is provided with 724 portions. That is, in the case 31 of the present embodiment, the upper edge 724 portion and the lower edge 821 portion overlap in the lateral direction, and the dividing line SS of the fixed case 70 and the movable case 80 is provided along this overlapping portion. ing.
[0043]
As shown in an enlarged view in FIG. 9, a horizontal movable case side mounting portion 84 along the lower edge 821 is provided at the lower edge 821 portion of the movable case side surface portion 82. An extended portion 841 extending outward in the lateral direction is provided at an appropriate location of the movable case side mounting portion 84, and a long hole-like notch 842 is formed in the extended portion 841. .
[0044]
[Description of movable case mounting structure, rotation operation, and posture]
In the case 31 of the crusher 30, the movable case 80 is attached to the fixed case 70 via an intermediate fixture 90.
The intermediate fixture 90 is a continuous member bent along the upper edge 724 of the fixed case side surface portion 72 as shown in FIGS. 4 and 6, and the vertical portion 91 as shown in FIGS. 10 and 11. And a T-shaped cross section having a horizontal portion 92.
10 and 11, the intermediate fixture 90 is fixed to the fixed case side mounting portion 74 of the fixed case side surface portion 72 with a bolt 93 penetrating the vertical portion 91, and one end side of the horizontal portion 92 is fixed. It is mounted on a receiving portion 741 formed on the upper surface of the case side mounting portion 74.
[0045]
Here, the inner edge of the movable case side attachment portion 84 is located outside the outer edge of the fixed case side attachment portion 74, and when the horizontal portion 92 of the intermediate attachment 90 is removed from the receiving portion 741, the entire movable case 80 is disposed. Sinks downward, and the upper side of the fixed case 70 can be swallowed more.
[0046]
In such a horizontal portion 92 of the intermediate fixture 90, a rotatable eyebolt 94 (another fixing fixture) is provided at a position corresponding to the notch 842 (FIG. 9) of the movable case side mounting portion 84. It is attached. The annular portion 941 of the eyebolt 94 is disposed between two support pieces 921 provided on the lower surface of the horizontal portion 92, and the shaft member 922 supported between the support pieces 921 is inserted into the annular portion 941. Therefore, the whole eyebolt 94 can be rotated around the shaft member 922. When the eyebolt 94 is rotated and the screw portion 942 is directed upward, the screw portion 942 enters the cutout portion 923 of the horizontal portion 92 and protrudes vertically from above the horizontal portion 92.
[0047]
On the upper surface of the horizontal portion 92, the movable case side mounting portion 84 of the movable case 80 is placed. In a state where the movable case side mounting portion 84 is placed, the screw portion 942 of the eyebolt 94 also enters the notch portion 842 of the movable case side mounting portion 84, and the nut 943 screwed into the screw portion 942 causes the movable case side to be moved. The attachment portion 84 and the intermediate attachment 90 are joined, and the entire movable case 80 is held on the intermediate attachment 90.
[0048]
The state in which the movable case 80 is held by the intermediate fixture 90, that is, the state shown in FIG. 4, is the posture at the time of the crushing operation of the movable case 80. The crushing work is carried out. Therefore, the movable case 80 is usually maintained in this working posture.
[0049]
Next, based on FIG. 12, FIG. 13, the operation | movement which opens the movable case 80 upward is demonstrated.
To open the movable case 80, first, as shown in FIG. 12, the nut 943 screwed to the eyebolt 94 of the intermediate fixture 90 is loosened, and the eyebolt 94 is rotated so that the screw portion 942 faces downward. As a result, the screw portion 942 is removed from the cutout portion 842 on the movable case 80 side, and the joining state of the movable case 80 and the intermediate fixture 90 is released. Thereafter, the movable case 80 is opened upward with the assistance of the hydraulic cylinder 394.
[0050]
FIG. 13 shows a state where the movable case 80 is opened upward. In this state, the insertion port 31A is also divided into two and the entire upper edge 724 of the fixed case 70 is exposed. Further, in this state, the first to third repulsion plates 331 to 333 are completely exposed, and the insertion and removal of the first to third repulsion plates 331 to 333 from the lateral direction is reliably prevented without being blocked by the fixing case 70. These can be easily reversed and exchanged.
That is, as shown in FIG. 13, the state where the movable case 80 is opened is a maintenance posture of the movable case 80.
[0051]
Further, in this maintenance posture, the movable case 80 is pivoted about the pivot mechanism 39 on the upper side, so that even when the movable case 80 is opened to the maximum, the movable case 80 is located in front of the fixed case 70. However, the power unit 4 can be disposed close to the back surface portion 73 of the fixed case 70.
[0052]
Further, when the movable case 80 is in the maintenance posture, a lock pin 396 that penetrates the fixed case 70 and the movable case 80 is inserted in the vicinity of the rotation mechanism 39, and the movable case 80 closes unexpectedly. This is mechanically prevented.
[0053]
Below, based on FIG. 14, FIG. 15, the operation | movement which sinks the movable case 80 below is demonstrated.
As shown in FIG. 14, the operation of sinking the movable case 80 first removes the bolt 93 of the intermediate fixture 90 and loosens the nut 943 screwed into the eye bolt 94 to fix the intermediate fixture 90. The horizontal part 92 of the intermediate attachment 90 is removed from the receiving part 741 of the fixed case side attachment part 74 by sliding in the lateral direction so as to be separated from the case side attachment part 74.
[0054]
At this time, sliding of the intermediate fixture 90 is performed in a state where the hydraulic cylinder 394 is operated to slightly lift the movable case 80 together with the intermediate fixture 90 and the weight of the movable case 80 is not applied to the intermediate fixture 90. Further, the sliding amount of the intermediate fixture 90 at this time is such that the threaded portion 942 of the eyebolt 94 is not detached from the notch portion 842 of the movable case side attaching portion 84. After the slide of the intermediate fixture 90, the nut 943 is lightly tightened so that the intermediate fixture 90 is attached to the extent that it does not fall off the movable case side attachment portion 84.
[0055]
Thereafter, as indicated by a two-dot chain line in the figure, the insertion port 31A side of the movable case 80 is slowly sunk downward with the assistance of the hydraulic cylinder 394.
Here, as described above, since the fixed case side mounting portion 74 and the movable case side mounting portion 84 are provided at positions that do not interfere with each other in the vertical direction, even when the movable case 80 is depressed, the movable case side mounting portion 74 and the movable case side mounting portion 84 are provided. The side attachment portion 84 is not in contact with the fixed case side attachment portion 74.
[0056]
FIG. 15 shows a state in which the movable case 80 is sunk downward. In this state, the upper side of the fixed case side surface portion 72 of the fixed case 70 is greatly swallowed into the movable case 80, and the upper edge 820 of the movable case 80 is substantially parallel to the upper edge 724 of the fixed case 70. For this reason, the height of the entire case 31 is much lower than the working posture described above.
That is, as shown in FIG. 15, the state in which the movable case 80 sinks is a posture for clearing the height restriction during transportation, and is the transportation posture of the movable case 80.
[0057]
When the movable case 80 is in the transport posture, the movable case side mounting portion 84 of the movable case 80 is brought into contact with the contact portion 725 provided on the side surface portion 72 of the fixed case, and the weight of the movable case 80 is reduced. By receiving at the contact portion 725, the transport posture is maintained well. The end portions of the hopper 41 and the feeder 42 are swallowed into the charging port 31A, but are sufficiently low so that even if the movable case 80 sinks and the charging port 31A becomes narrow, the movable case 80 There is no contact with.
[0058]
Incidentally, the movable case 80 has a liner replacement posture in addition to a working posture, a maintenance posture, and a transportation posture. Below, this liner exchange attitude | position is demonstrated.
In FIG. 16, the movable case 80 can be divided into a rotating side movable case 801 that rotates integrally with the first to third repulsion plates 331 to 333 and the like, and an inlet side movable case 802 on the side of the inlet 31 </ b> A. Yes (see FIG. 6), the rotary side movable case 801 opens with the dividing line S′-S ′ as a boundary while the insertion port side movable case 802 is attached to the fixed case 70. That is, in the state where the rotating side movable case 801 is opened, the eyebolt 94 on the fixed case 70 side is detached from the rotating side movable case 801, but the insertion port side movable case 802 and the fixed case 70 are The mounting state is maintained by another eyebolt 94.
[0059]
The joint structure between the rotating side movable case 801 and the inlet side movable case 802 is basically the same as the conventional structure in which the flanges come into contact with each other. A rotation side flange portion 803 that is an extension of the portion 84 is provided, and the insertion port side movable case 802 is provided with a insertion port side flange portion 804 to which an eye bolt 805 is attached. The flanges 803 and 804 are joined to each other by rotating the eyebolt 805 to engage with the rotation-side flange 803 and tightening a nut 806 screwed to the eyebolt.
[0060]
In such a liner replacement posture of the movable case 80, the liner 337 provided above the first repulsion plate 331 is also exposed in the lateral direction, and the liner 337 is easily inserted and removed from the movable case side surface portion 82 side for replacement. Is possible. However, the inspection and replacement work of the first to third repulsion plates 331 to 333 may be performed in such a liner replacement posture.
[0061]
[Explanation of transportation of mobile crusher]
FIG. 17 shows a state in which the mobile crusher 1 is loaded on the loading platform of the trailer T when the mobile crusher 1 is transported.
In such a state, the movable case 80 of the crusher 30 is in the transportation posture in order to clear the height restriction during transportation, and the movable case 80 is depressed so as to swallow the upper side of the fixed case 70.
[0062]
In addition, for the rotating lamp 25 shown in FIG. 1 and the like that exceeds the height limit during transportation and is structurally simple, the height limit is cleared by appropriately shifting it downward. The belt conveyor 43 below the feeder 42 is bent and flipped upward, and the width limitation is cleared without removing the belt conveyor 43.
[0063]
Furthermore, FIG. 18 and FIG. 19 show transportation modes for clearing more severe height restrictions, such as the need to pass under a crossover with a lower girder size during transportation.
That is, in the mobile crusher 1 shown in FIG. 18, the entire movable case 80 is removed from the crusher 30, and the movable case 80 is transported by another trailer T ′ shown in FIG. To remove the movable case 80 from the fixed case 70, the case support pins 393 shown in FIGS. 6 and 7 may be removed, which can be easily performed.
[0064]
In addition, from the mobile crusher 1, the hopper 41, handrails (handrails) 26 and 27 around the crusher 30, the discharge belt conveyor 50, and the like are removed, and these are similarly transported by another trailer. However, in FIG. 19, the discharge belt conveyor 50 is not shown. Further, the traveling lever 4A is made to be retractable and is brought into a collapsed state.
Thus, removing a part of the mobile crusher 1 is also effective when dealing with weight restrictions during transportation.
[0065]
[Effect of the embodiment]
According to this embodiment, there are the following effects.
(1) In the crusher 30 mounted on the mobile crusher 1, the case 31 is a split type having the fixed case 70 and the movable case 80. However, the fixed case side mounting portion 74 and the movable case side mounting portion 84 are provided. Is in a position where it does not interfere even when the movable case 80 is operated, so if the fixed state between the fixed case 70 and the movable case 80 is released by removing the intermediate attachment 90 from the fixed case side mounting portion 74, The movable case 80 can be surely sunk below the fixed case 70.
[0066]
(2) For this reason, when the mobile crusher 1 is transported by trailer, the inlet 31A side of the movable case 80 disposed at the highest position may be sunk downward with respect to the fixed case 70. Thereby, the height dimension of the whole case 31 can be made small and the height restriction | limiting at the time of transportation can be cleared reliably.
[0067]
(3) At this time, since the fixed case 70 and the movable case 80 are fixed via the intermediate fixture 90, the portion between the fixed case side surface portion 72 and the movable case side surface portion 82 is equivalent to the intermediate fixture 90. When the movable case 80 is submerged, the interference between the mounting portions 74 and 84 can be more reliably prevented, and the submerging operation can be performed smoothly.
[0068]
(4) In the crusher 30, even if the clearance between the fixed case side surface portion 72 and the movable case side surface portion 82 is large and the mounting portions 74 and 84 are separated from each other, the movable case side mounting portion 84 and the intermediate mounting tool 90, and the fixed case side mounting portion 74 and the intermediate fixture 90 can be closely contacted to fix the fixed case 70 and the movable case 80 to each other through the intermediate fixture 90 without a gap. And the dustproofness can be improved.
[0069]
(5) Furthermore, only the intermediate fixture 90 is interposed between the fixed case 70 and the movable case 80, and the structure of the holding portion of the movable case 80 with respect to the fixed case 70 can be simplified. The case 31 does not become larger than necessary, and accordingly, the loading space such as a trailer during transportation can be used effectively.
[0070]
(6) Since the horizontal portion 92 of the intermediate fixture 90 is supported by the receiving portion 741 of the fixed case side mounting portion 74, the fixed case side mounting portion 74 supports the intermediate fixture 90 and hence the heavy movable case 80. it can. Therefore, a large load due to the movable case 80 does not directly act on the bolt 93 for fixing the intermediate fixture 90, and the bolt 93 can be made small, and the attaching operation and the removing operation can be facilitated.
[0071]
(7) Also, since the movable case side mounting portion 84 and the intermediate mounting member 90 need only employ eyebolts 94 and nuts 943 that can be fixed to each other, a large fixing considering the large load of the movable case 80 is also necessary. Mounting fixtures can be dispensed with, and the mounting and removal operations can be facilitated.
[0072]
(8) When removing the intermediate attachment 90 from the fixed case 70, the intermediate attachment 90 is slid along the notch 842 of the movable case side attachment portion 84, and thus separated from the fixed case side attachment portion 74. On the contrary, when the intermediate attachment 90 is attached to the fixed case 70, the intermediate attachment 90 may be slid from the separated state and brought close to the fixed case side attachment portion 74. The attachment 90 can be easily attached and detached.
[0073]
(9) Even if the crusher 30 of the large case 31 is mounted, there is no problem in terms of height restriction during transportation. Therefore, the enlargement of the crusher 30 can be surely promoted, and the work efficiency using the large crusher 30 is improved. Can be greatly improved.
Further, as the size of the crusher 30 (case 31) is increased, the input port 31A can also have a large opening area, and the material to be crushed can be easily input, and the material to be crushed can be prevented from being clogged at the input port 31A. Can be thrown in.
[0074]
(10) Since the movable case 80 of the case 31 has a structure in which the upper part of the fixed case 70 is squeezed, it is sufficient that the movable case 80 is rotated by the rotation mechanism 39 and the insertion port 31A side is sunk downward. Even if the movable case 80 is not completely removed from the fixed case 70, the height dimension of the case 31 can be easily reduced.
[0075]
(11) In the case 31, after removing the case support pins 393 of the rotation mechanism 39, the entire movable case 80 is removed from the fixed case 70, and the hopper 41 and the discharge belt conveyor 50 are removed from the frame 20. The mobile crusher 1 side can be further lowered, and the severe height limit can be cleared.
And since the movable case 80, the hopper 41, etc. removed from the mobile crusher 1 side are not so large in height, they are separated by another trailer without worrying about the height restriction during transportation. Can be transported without hindrance.
[0076]
(12) When crushing work is performed by the crusher 30, the movable case 80 may be brought into a working posture and joined to the fixed case 70 via the intermediate attachment 90, and may sink unexpectedly downward during the crushing work. There is no worry.
Further, when the mobile crusher 1 is transported, the submerged movable case 80 is reliably supported by the abutting portion 725, so that there is no fear that the movable case 80 is lowered more than necessary, and the transport posture can be maintained well.
In the maintenance posture of the movable case 80, since the opened movable case 80 is securely locked by the lock pin 396, the maintenance posture can be maintained well, and the first to third rebound plates 331 to 333 are inspected and replaced. Work can be carried out without burden. The same applies to the liner replacement posture in which the rotation-side movable case 801 of the movable case 80 is opened.
As described above, the movable case 80 can be maintained in an appropriate posture in accordance with various operations, and the usability as the crusher 30 can be improved.
[0077]
(13) Since the movable case 80 is integrally provided with the eave portion 83 extending to the feeder 42 side, the object to be crushed in the case 31 hits the eave portion 83, and the input port Jumping out of 31A can be prevented.
Further, by providing the eaves 83 as described above, it is not necessary to worry about the jumping out of the object to be crushed from the case 31, so that the input port 31A can be designed to be large. Can be thrown into.
[0078]
(14) Moreover, since the chain 831 and the rubber ridge 832 are suspended from the eaves 83, the object to be crushed can be more reliably prevented from being scattered, and the object to be crushed can be reliably crushed. .
[0079]
(15) Since the rotation mechanism 39 for rotating the movable case 80 is provided on the upper side of the entire case 31, the rotation of the movable case 80 can be performed at a higher position. Therefore, on the front side of the fixed case 70 which is lower than the rotation mechanism 39, a space required for opening the case 31 can be made almost unnecessary, and the power unit 4 can be arranged close to the crusher 30 side accordingly. The space can be used effectively without the dead space.
[0080]
(16) Since the power unit 4 can be arranged close to the crusher 30, the total length (length in the front-rear direction) of the mobile crusher can be shortened, so that the entire mobile crusher 1 can be made compact. For this reason, the mobility of the mobile crusher 1, in particular, the turning performance can be improved, and it can be reliably operated even in a narrow site.
[0081]
(17) Since the rotation mechanism 39 is provided on the opposite side to the insertion port 31A and is located on the upper side, the rotation mechanism 39 is rotated when the movable case 80 is rotated upward by a predetermined angle. Compared to the case where the mechanism 39 is closer to the lower part, the inlet 31A can be enlarged so as to expand further upward, so that the material to be crushed into the inlet 31A can be more easily introduced and clogging can be prevented more reliably. it can.
[0082]
(18) When the rotation mechanism 39 is on the upper side, when the movable case 80 is rotated, the insertion port 31A side draws a locus that is closer to the vertical, so when the vertical movement is made by a predetermined amount, The trajectory can be made shorter, and in particular, it is possible to quickly sink the insertion port 31A from the work posture to the transport posture, or quickly return from the transport posture to the work posture.
[0083]
(19) The insertion port 31A is generally provided on the upper side of the case 31, but if the rotation mechanism 39 is also provided on the input port 31A side, the hopper 41 and the feeder 42 are opened when the movable case 80 is opened. Since there is a possibility that the movable case 80 interferes with the movable case 80, it is necessary to provide some evacuation means in the hopper 41 or the feeder 42, and it is necessary to secure a evacuation space for evacuation. Therefore, the evacuation space becomes a dead space that is not used except during evacuation, and there is a concern that the total length of the mobile crusher 1 is increased and the mobility is hindered. On the other hand, in this embodiment, since the rotation mechanism 39 is provided on the side opposite to the insertion port 31A, there is no need to retreat such a hopper 41 or the feeder 42, and a retreat space corresponding to that is provided. And the size reduction of the entire mobile crusher 1 can be further promoted.
[0084]
In addition, this invention is not limited to the said embodiment, Including other structures etc. which can achieve the objective of this invention, the deformation | transformation etc. which are shown below are also contained in this invention.
For example, in the above-described embodiment, the intermediate fixture 90 is provided with the eyebolt 94, and the movable case side attaching portion 84 is provided with the notch portion 842 into which the bolt portion 942 of the eyebolt 94 is inserted. There may be. That is, such an eyebolt 94 is provided on the movable case side mounting portion 84, and the screw portion 942 faces downward so as to engage with the cutout portion 923 of the intermediate mounting device 90. 90 may be attached.
[0085]
Moreover, although the intermediate fixture 90 of the said embodiment was made slidable along the notch part 842 of the movable case side attaching part 84, it is arbitrary whether it provides so that a slide is possible. For example, when the through-holes are provided in the movable case-side mounting portion 84 and the horizontal portion 92 of the intermediate fixture 90, and the intermediate fixture 90 is fixed to each other with normal bolts inserted through these through-round holes, Even if it does not slide, it is included in other inventions except for the invention of claim 3.
[0086]
In the above embodiment, the intermediate fixture 90 and the fixed case side mounting portion 74 are brought into close contact with each other by surface contact, and the movable case side mounting portion 84 and the intermediate fixture 90 are also brought into close contact with each other by surface contact. Although it was the structure which can ensure the sealing performance in case 31, in addition to this, you may apply the seal structure shown in FIG. 20 (1st modification).
That is, in FIG. 20, by extending the upper edge 724 of the fixed case 70 upward, opposing surface portions 726 and 826 are formed in the fixed case 70 and the movable case 80, respectively, and the opposing surface portions 726 and 826 are made of rubber. A sealing material 727, 827 such as is attached. The sealing materials 727 and 827 have shapes and dimensions that do not come into contact with the mounting portions 74 and 84 even when the movable case 80 moves upward and downward.
[0087]
In such a sealing structure, it is possible to more surely prevent dust and the like generated inside the case 31 from leaking to the outside by the sealing materials 727 and 827 between the opposed surface portions 726 and 826.
Further, since the sealing materials 727 and 827 are located above the fixed case side mounting portion 74 and the movable case side mounting portion 84, the dust falls on the mounting portions between the mounting portions 74 and 84 and the intermediate mounting tool 90. There is nothing. Therefore, there is no possibility that the dust will enter the contact portion due to the surface contact and deteriorate the contact degree, and the sealing performance can be maintained well over a long period of time.
[0088]
In the above embodiment, the intermediate fixture 90 is attached to the fixed case side attachment portion 74 with the bolts 93. For example, as shown in FIG. 21, a horizontal piece 911 is provided at the lower end of the vertical portion 91 of the intermediate fixture 90. The horizontal piece 911, the vertical portion 91, and the inner end of the horizontal portion 92 may be formed with a U-shaped portion in cross section, and the U-shaped portion may be fitted to the fixed case side mounting portion 74 (No. 1). 2).
[0089]
Even in such a case, the movable case 80 can be stably held in the fixed case 70 as long as the intermediate fixture 90 is not slid (unless the fitted state is released).
And since the bolt 93 like the said embodiment is not used, there also exists a merit that the attachment or detachment operation | work of the intermediate fixture 90 can be made easier.
[0090]
In the embodiment, the receiving portion 741 is formed on the upper surface of the fixed case side mounting portion 74. However, as shown in FIG. 22, the receiving portion 741 includes the upper end surface 728 of the fixed case side surface portion 72. May be formed.
The receiving portion 741 may be provided separately in the vicinity of the fixed case side mounting portion 74. Specifically, as shown by a two-dot chain line in FIG. 20, another projecting portion 729 is provided on the lower side of the fixed case side mounting portion 74 at an interval, and an intermediate mounting is provided on the upper surface of the projecting portion 729. The structure which mounts the horizontal piece 911 provided in the lower end of the tool 90 may be sufficient. Even with such a structure, the weight of the movable case 80 can be supported by the projecting portion 728 via the intermediate fixture 90, and the effect (6) described above can be obtained in the same manner.
[0091]
In the above embodiment, the fixed case side mounting portion 74 is formed of a separate member welded to the fixed case side surface portion 72. However, as shown by a two-dot chain line in FIG. In the case where the thickness is sufficiently large and the screw hole of the bolt 93 can be reliably engraved, the bolt hole portion of the fixed case side surface portion 72 may be used as the fixed case side mounting portion according to the present invention.
[0092]
The mobile crusher 1 of the above embodiment was a self-propelled type provided with a crawler type traveling unit 10, but it may be a wheel type not limited to a crawler type, and is not limited to a self-propelled type, It may be towed. In short, it may be configured to be movable.
[0093]
The crushing device of the present invention is not limited to the impact crusher 30 described in the above embodiment, and may be any crusher such as a jaw crusher, a shear crusher, a cone crusher, or a roll crusher.
[0094]
And the crushing apparatus of this invention is not limited to what is mounted in the mobile crusher 1, For example, the stationary type put in the exclusive crushing place may be sufficient. Even in such a case, when the crushing device needs to be transported for some reason, the height restriction at the time of transport can be surely cleared by setting the movable case 80 to the transport posture.
[0095]
In addition to the configuration of the frame 20, the object to be crushed supply unit 40, the discharge belt conveyor 50, the specific shape of the fixed case side mounting part 74, the movable case side mounting part 84, and the intermediate mounting tool 90 of the case 31 are also included. The present invention can be arbitrarily changed within a range in which the object of the present invention can be achieved, and the present invention is not limited to the embodiment and the modification.
[Brief description of the drawings]
FIG. 1 is a side view showing a mobile crusher equipped with a crushing apparatus according to an embodiment of the present invention.
FIG. 2 is a view of the mobile crusher as viewed from the input side of the object to be crushed.
FIG. 3 is a plan view showing the mobile crusher.
FIG. 4 is a side view showing a state in which a movable case constituting the case of the crushing apparatus is in a working posture.
FIG. 5 is a cross-sectional view showing a part of the internal structure of the crushing apparatus.
FIG. 6 is an exploded perspective view showing the crushing device.
7 is a cross-sectional view taken along the line VII-VII in FIG. 4, and is a cross-sectional view showing a main part of the case.
FIG. 8 is a side view (A) and a sectional view (B) showing another main part of the case.
FIG. 9 is a perspective view showing a main part of the movable case.
FIG. 10 is a perspective view showing an intermediate fixture used in the case.
FIG. 11 is a cross-sectional view showing a holding portion of the fixed case and the movable case.
FIG. 12 is a cross-sectional view for explaining an operation of opening the movable case.
FIG. 13 is a side view showing a state where the movable case is in a maintenance posture.
FIG. 14 is a cross-sectional view for explaining an operation of sinking the movable case.
FIG. 15 is a side view showing a state where the movable case is in a transport posture.
FIG. 16 is a side view showing a state where the movable case is in a liner replacement posture.
FIG. 17 is a diagram showing a case where the mobile crusher is transported without being disassembled.
FIG. 18 is a diagram illustrating a case where the mobile crusher is partially disassembled and transported.
FIG. 19 is a view for explaining transportation of a part disassembled from the mobile crusher.
FIG. 20 is a cross-sectional view showing a first modification of the present invention.
FIG. 21 is a cross-sectional view showing a second modification of the present invention.
FIG. 22 is a cross-sectional view showing a third modification of the present invention.
FIG. 23 is a side view showing a case of a conventional crushing device.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 30 ... Crushing device, 31 ... Case, 70 ... Fixed case, 74 ... Fixed case side attachment part, 80 ... Movable case, 84 ... Movable case side attachment part, 90 ... Intermediate attachment tool, 726, 826 ... Opposite surface part, 727, 827 ... Sealing material, 741 ... Receiving part.

Claims (4)

The movable case (80) includes a box-shaped fixed case (70) having a fixed case side surface (72) and a lid-shaped movable case (80) having a movable case side surface (82). In the crushing device (30) having a split-type case (31) attached to the upper side of the fixed case (70) so as to be freely pivotable up and down by pin joining,
The movable case (80) operates such that the movable case side surface (82) overlaps the fixed case side surface (72) on the outer side,
Each of the fixed case side surface portion (72) and the movable case side surface portion (82) has a fixed case side mounting portion (74) and a movable case side at a position where they do not interfere even if they operate so as to overlap each other. A mounting portion (84) is provided;
It said stationary casing side mounting portion (74) and the movable casing side mounting portion (84) through these mounting portions (74, 84) intermediate fitting both removably attached to the (90) are fixed to each other,
In a state in which the intermediate fixture (90) is removed from the fixed case side mounting portion (74), the movable case (80) is fixed to the fixed case mounting portion (74) via the intermediate fixture (90). A crushing device (30), characterized in that it operates to a submerged position rather than a position to be submerged . The crushing device according to claim 1 ,
The crushing device (30), wherein the intermediate fixture (90) is slidable in a direction away from the fixed case side attachment portion (74). In the crushing device according to claim 1 or 2,
The crushing device (30) , wherein an upper edge of the movable case is substantially horizontal in a state in which the movable case is moved to the submerged position . In the crushing device (30) according to any one of claims 1 to 3,
The fixed case (70) and the movable case (80) are provided with opposing surface portions (726, 826) facing each other with a space therebetween,
A crushing device (30) characterized in that a sealing material (727, 827) that functions when the movable case (80) is in a crushing work posture is interposed between the facing surfaces (726, 826).

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