JP2006305520A - Gap adjusting mechanism of jaw crusher - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a gap adjusting mechanism of a jaw crusher which has simple constitution and by which metals caught in a gap between a movable tooth and an anchor tooth can be easily removed. <P>SOLUTION: The jaw crusher 20 is provided with a toggle block 4 which is connected with the movable tooth 1 and is provided so as to be able to advance and retreat toward a main body frame 7, a cylinder 5 which energizes the toggle block 4 in a main body frame 7 direction and two or more shim plates 6 which are provided by being held between the toggle block 4 and the main body frame 7 in parallel with a transmission direction of reaction force from an object to be crushed when crushed so as to transmit the reaction force to the main body frame 7. A projection part is formed by making a surface shape of at least one shim plate among two or more shim plates 6 project from edge ends of other shim plates when provided therebetween in a direction approximately vertical to the transmission direction of the reaction force. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a gap adjusting mechanism suitable for adjusting a gap between a fixed tooth and a movable tooth in a jaw type crushing apparatus for crushing a concrete lump or the like.

  2. Description of the Related Art Conventionally, a jaw crushing device is known as a device for crushing concrete gravel generated when dismantling rocks or concrete structures mined from a quarry or mine. The jaw-type crushing device is a device equipped with a crushing mechanism provided so that two pressing plate members of a fixed tooth and a movable tooth are expanded upward, and between the fixed tooth and the movable tooth. By crushing the object to be crushed by sandwiching large rocks or galley (object to be crushed) in the wedge-shaped gap, the object to be crushed can be crushed small.

  In this jaw-type crushing device, the fixed teeth are fixed to the frame of the main body of the device, while the movable teeth provided relative to the fixed teeth have one end positioned above the main frame through the rotating shaft. The other end portion which is pivotally supported and located below the shaft is coupled to the main body frame via a link member (toggle plate) of the toggle block. In addition, the rotating shaft that pivotally supports one end of the movable tooth is designed to rotate eccentrically with respect to the main body frame. Thus, the object can be crushed by applying a compressive force to the object to be crushed between the gaps.

  The movable teeth and fixed teeth are closest to each other at the lower ends, and the maximum size after crushing the object to be crushed by being sandwiched in this gap (that is, the particle size after crushing) is the movable teeth and fixed teeth. It is determined according to the minimum dimension of the gap at the lower end (hereinafter simply referred to as the gap dimension). For this reason, the gap dimension can be arbitrarily set so that a desired particle size can be obtained after crushing.

  The clearance dimension can be set by adjusting the position of the movable tooth with respect to the main body frame on the other end side. For example, the gap between the toggle block connected to the vicinity of the other end of the movable tooth and the main body frame can be set. This is done by inserting a gap adjusting shim plate between them. Here, a shim plate having a thickness and a number corresponding to the size of the gap between the movable tooth and the fixed tooth is inserted. With such a configuration, the minimum dimension of the gap between the fixed tooth and the movable tooth can be set to a desired size.

In addition to the link member, the other end side of the movable tooth is pivotally attached to the tip of a support rod fixed to the main body frame via a spring. Thereby, the other end portion of the movable tooth is elastically supported with respect to the main body frame even when the shim plate is attached and detached.
Of course, this support rod movably supports the other end of the movable tooth by expanding and contracting the spring, so that the adjustment of the gap dimension between the movable tooth and the fixed tooth can be performed without any trouble.

There exists a thing as described in patent document 1 in the above jaw type crushing apparatuses, for example. In the technique described in Patent Document 1, a jaw crushing device (jaw crusher) having a toggle block moving mechanism for moving a toggle block connected to a movable tooth (swing jaw), wherein the toggle block moving mechanism is a screw. It is described that the toggle block can be moved forward and backward by rotating the screw portion of the member. With such a configuration, the toggle block can be easily moved forward and backward with respect to the main body frame by rotating the screw part using a general-purpose tool such as a ratchet wrench. Can improve versatility.
JP 2003-245565 A

  By the way, in the conventional jaw-type crushing device as described above, the main body frame is arranged on the side in which the toggle block moves when the gap between the fixed tooth and the movable tooth is enlarged with respect to the arrangement position of the toggle block. A shim plate is sandwiched between the main body frame and the toggle block. In other words, the reaction force against the compressive force that tries to crush the object to be crushed acts in a direction that attempts to enlarge the gap between the fixed tooth and the movable tooth, so that the reaction force is applied to the toggle block and shim plate. Each element is arranged so that it can be received by the main body frame via the, so that the object to be crushed can be effectively crushed.

However, in the case of the jaw type crushing device having a structure in which the reaction force applied when crushing the object to be crushed is received by the main body frame, in order to adjust the gap dimension between the fixed tooth and the movable tooth, the gap dimension is temporarily set. It becomes necessary to narrow. In other words, in order to adjust the gap dimension, it is necessary to widen the gap between the main body frame and the toggle block so that the inserted shim plate can be replaced and removed. For this purpose, the movable tooth is moved to the fixed tooth side. I have to let it.
Therefore, the shim plate is usually removed or replaced in a state where there is no object to be crushed in the gap between the fixed tooth and the movable tooth.

On the other hand, when the concrete glass generated when demolishing a concrete building is crushed into small pieces and recycled as concrete crushed stone, metal pieces (for example, steel pieces or rebar scraps) may be mixed in the concrete glass. is there. Since the metal pieces mixed in the concrete glass are not crushed by the compressive force of the crushing device, they bite into the gap between the fixed teeth and the movable teeth and stop the reciprocating motion of the movable teeth (locking). ) And the crushing device may stop.
That is, in this case, the gap between the movable tooth and the fixed tooth cannot be widened or narrowed, so that it becomes difficult to remove the sandwiched metal piece.

  In general, when concrete crushed stone is reclaimed from a demolished concrete building, concrete glass and metal are separated in advance, and only the concrete glass is put into a crushing device for regeneration. Further, before being put into the crushing apparatus, the material to be crushed can be passed through a magnetic separator (an apparatus having a strong magnet and magnetizing the metal) so that the separation can be performed again. However, when a piece of metal is contained inside the concrete glass, separation using a magnetic separator may be difficult, and the concrete glass containing the metal piece may be thrown into the crushing device. When the size of the metal piece is larger than the gap size between the fixed tooth and the movable tooth, the metal piece is caught in the gap between the fixed tooth and the movable tooth, and the movable tooth may be locked.

  The present invention has been devised in view of such problems, and is a jaw type crushing device that can easily remove metal sandwiched between gaps between a movable tooth and a fixed tooth with a simple configuration. An object is to provide a gap adjusting mechanism.

  In order to achieve the above goal, the gap adjusting mechanism of the jaw type crushing device of the present invention (Claim 1) is capable of swinging in a direction in which the fixed teeth are fixed to the main body frame and in contact with and away from the fixed teeth. In a jaw type crushing device having movable teeth arranged opposite to each other and crushing a material to be crushed between the fixed teeth and the movable teeth by the swinging, the main body frame connected to the movable teeth A toggle block that can be moved forward and backward, a cylinder that urges and presses the toggle block in the direction of the main body frame, and a reaction force from the object to be crushed during the crushing is transmitted to the main body frame. A plurality of shim plates sandwiched in parallel in the reaction force transmission direction between the toggle block biased by the cylinder and the main body frame, and of the plurality of shim plates At least one shim board It is characterized by having a protruding portion formed so as to protrude substantially vertically relative to the transfer direction of the reaction force than the edge of the other of the shim plate in 該挟 Soji.

In this case, it is preferable that the projecting portion is provided with a through-hole penetrating in the plate thickness direction (Claim 2).
The plurality of shim plates are preferably sandwiched between the toggle block and the main body frame with the plate surface substantially perpendicular to the transmission direction of the reaction force. ).

  According to the gap adjusting mechanism of the jaw type crushing apparatus of the present invention (claim 1), the plurality of shim plates sandwiched between the toggle block and the main body frame protrude from the edge of the other shim plate. It is possible to easily pull out the shim plate of at least one of them by grasping the protruding portion. That is, the gap dimension between the movable tooth and the fixed tooth can be increased with a simple configuration. Thereby, even if the object to be crushed is sandwiched between the gap between the fixed tooth and the movable tooth, the minimum gap dimension between the movable tooth and the fixed tooth can be increased. The metal sandwiched between the gaps can be easily removed, and the gap adjustment can be facilitated.

Further, according to the gap adjusting mechanism of the jaw type crushing apparatus of the present invention (Claim 2), the shim plate can be more easily pulled out by using the through hole provided in the protruding portion.
In addition, according to the gap adjusting mechanism of the jaw type crushing apparatus of the present invention (claim 3), the shim plate can be pulled out with a small force, and the labor involved in pulling out the shim plate can be reduced.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 to 4 show a jaw type crushing apparatus according to an embodiment of the present invention. FIG. 1 is a cross-sectional configuration diagram showing the structure of a gap adjusting mechanism of the apparatus, and FIG. FIGS. 3A and 3B are front views showing the structure of the shim plate of the mechanism (a view taken in the direction of arrow A in FIG. 1), and FIG. 4 is sandwiched by the mechanism. It is a typical perspective view which shows the some shim board of the mounted state.

[overall structure]
First, FIG. 2 shows a self-propelled crusher 30 including a jaw crusher to which a control device as an embodiment of the present invention is applied. As shown in FIG. 2, the self-propelled crusher (hereinafter also simply referred to as a vehicle body) 30 includes a crusher (jaw type crushing device) 20, a grizzly feeder 21, a discharge conveyor 22, and a lower traveling body 23. It is prepared for.

A crusher 20 disposed in a substantially central portion of the vehicle body 30 is a crushing device for crushing small objects to be crushed such as rocks and concrete slabs, and as shown in FIG. The material to be crushed is fed from the side, and the material to be crushed is crushed and then discharged from the discharge port 9.
Further, as shown in FIG. 2, the grizzly feeder 21 is a supply device for supplying an object to be crushed to the crusher 20. The grizzly feeder 21 is provided adjacent to the rear of the crusher 20 from one end of the rear of the vehicle body 30 (leftward in FIG. 2) to the insertion port 12, and is a rough rock mined from a quarry or mine. Or to be crushed objects such as concrete trash generated by demolishing concrete structures. In addition, the grizzly feeder 21 can feed the crushed material into the inlet 12 of the crusher 20 by an appropriate amount by applying vibration to the loaded crushed material.

On the other hand, the discharge conveyor 22 extended from the lower part of the crusher 20 to one end part in the front of the vehicle body 30 (right direction in FIG. 2) is a discharge device for discharging the object to be crushed by the crusher 20. . The material to be crushed by the crusher 20 falls from the discharge port 9 onto a discharge conveyor 22 extending downwardly and is conveyed forward of the vehicle body 30.
The lower traveling body 23 is a self-propelled crawler traveling device provided below the crusher 20, the grizzly feeder 21 and the carry-out conveyor 22.

[Crusher configuration]
Next, a specific configuration of the crusher 20 will be described with reference to FIG. The crusher 20 is a device provided with a crushing mechanism provided so that the two pressing plate members of the movable tooth 1 and the fixed tooth 2 face each other so as to expand upward. FIG. 1 shows a state in which a material to be crushed (object to be crushed) is introduced into a wedge-shaped gap between the pressing plate members 1 and 2. The rock 10 etc. are illustrated.

Moreover, this crusher 20 is provided with the main body frame 7 as the framework. In FIG. 1, each part of the main body frame 7 (and its cross-sectional shape and the like) is illustrated in various places, but these indicate each part of the frame that is firmly fixed and integrally formed. These are all shown with the same reference numerals.
The fixed teeth 2 are fixed to the main body frame 7 of the crusher 20. On the other hand, the movable tooth 1 provided opposite to the fixed tooth 2 has one end portion 1 a positioned above it supported on the main body frame 7 via a rotating shaft 13.

As shown in FIG. 1, the rotating shaft 13 has a rotating shaft center C ₁ that is eccentric with respect to the outer diameter center C ₂ of the rotating shaft 13, and one end portion (here, the upper end portion) of the movable tooth 1. ) The 1a side is pivotally supported with respect to the main body frame 7. Thereby, the rotating shaft 13 rotates eccentrically with respect to the main body frame 7.
As shown in FIG. 1, the fixed tooth 2 has a surface shape that is convexly bent toward the surface facing the movable tooth 1, while the movable tooth 1 has a substantially planar shape, It is arranged slightly inclined with respect to the fixed tooth 2.

On the other hand, a toggle plate 3 having one end pin-joined is provided on the other end 1b side located below the movable tooth 1, and a toggle block 4 is connected to the other end of the toggle plate 3 by pin joining. ing. The toggle block 4 is provided so as to be movable relative to the main body frame 7 in the forward / backward direction (left / right direction in FIG. 1).
The toggle plate 3 functions as an oscillating link that connects the toggle block 4 and the movable tooth 1 by pin joints at both ends thereof, and a pin joint portion (hereinafter referred to as “toggle block 4”) between the toggle block 4 and the movable tooth 1. 1d (also referred to as a connection point) serves as a fulcrum for swinging the movable tooth 1 when the rotary shaft 13 rotates eccentrically.

  Thereby, the movable tooth 1 reciprocates along the tooth surface while approaching or separating from the fixed tooth 2 fixed to the main body frame 7 (while swinging so as to come in contact with and away from). The object to be crushed 10 put into the space between the movable tooth 1 and the fixed tooth 2 can be crushed by applying a compressive force. That is, the object 10 to be crushed is sandwiched between the movable tooth 1 and the fixed tooth 2, and the object 10 to be crushed is crushed by crushing them. In addition, in order to make the crushing action by the contact / separation motion and the reciprocating motion as described above more effective, uneven shapes (not shown) are formed on the opposing surfaces of the movable tooth 1 and the fixed tooth 2, respectively.

Near the connecting point 1 d on the other end 1 b side of the movable tooth 1, the tip of a support rod 11 connected to the main body frame 7 via a spring 14 is pivotally attached. In addition, the pivot point 1c between the support rod 11 and the movable tooth 1 is also a pin joint portion joined by a pin.
Further, as shown in FIG. 1, the crusher 20 includes a hydraulic cylinder (hereinafter also simply referred to as a cylinder) 5 that urges the toggle block 4 toward the main body frame 7 (leftward in FIG. 1). A plurality of shim plates 6 are sandwiched between the toggle block 4 biased by the hydraulic cylinder 5 and the main body frame 7. The piston 5 urges the toggle block 4 connected to the rod 5a toward the main body frame 7 by pulling the rod 5a toward the cylinder 5 (leftward in FIG. 1).

  The cylinder 5 itself is fixed to the main body frame 7. As will be described later, the rod 5a of the cylinder 5 is connected to the toggle block 4 through the inside of the notch 6c formed in the shim plate 6. It has become so. In this way, the piston 5 can be held in a state where a plurality of shim plates 6 are sandwiched between the toggle block 4 and the main body frame 7. Further, by pushing out the rod 5a of the cylinder 5 to the toggle block 4 side (right direction in FIG. 1), the gap between the toggle block 4 and the main body frame 7 can be increased. The sandwiched shim plate 6 can be exchanged and attached.

  When the shim plate 6 is replaced or attached, that is, when the hydraulic pressure of the cylinder 5 is released, the urging force of the toggle block 4 to the main body frame 7 is weakened and the combined state is released. For this reason, the function as the swing link by the toggle plate 3 is lost. However, in this case, an expansion / contraction swing link is formed by the spring 14 and the support rod 11, and the other end 1b side of the movable tooth 1 is elastically held with respect to the main body frame 7 at the pivot point 1c. It has come to be.

  The plurality of shim plates 6 sandwiched between the toggle block 4 and the main body frame 7 are oriented so as to be substantially perpendicular to the advancing / retreating direction (left-right direction in FIG. 1) of the toggle block 4 and the toggle block 4 It is sandwiched in a state of being lined up in the 4 forward and backward directions. Thus, for example, as the thickness and number of shim plates 6 are increased, the distance between the toggle block 4 and the main body frame 7 is increased, and the toggle block 4 is further away from the main body frame 7 (rightward in FIG. 1). It will be fixed.

  Further, by adjusting the thickness and the number of shim plates 6 sandwiched between the main body frame 7 and the toggle block 4, the movable frame 1 can move within the movable range with respect to the main body frame 7 on the other end 1 b side. The position can be adjusted as appropriate. That is, according to the sandwiching thickness of the shim plate 6, the minimum gap dimension d between the movable tooth 1 and the fixed tooth 2 (the gap dimension at the lower end where the movable tooth 1 and the fixed tooth 2 are closest to each other). ), That is, the maximum size after crushing of the material 10 to be crushed by being sandwiched in the gap (that is, the particle size after crushing) can be set to a desired size. In addition, as shown in FIG. 1, the minimum clearance dimension d between the fixed tooth 2 and the movable tooth 1 is reduced as the sandwiched thickness of the shim plate 6 is increased.

  Here, the arrangement positional relationship between the main body frame 7 and the toggle block 4 in the gap adjusting mechanism as described above will be described. In this crusher 20, the direction in which the toggle block 4 moves when the minimum gap dimension d between the fixed tooth 2 and the movable tooth 1 is enlarged with respect to the position where the toggle block 4 is disposed (that is, the left direction in FIG. 1). ), A plurality of shim plates 6 can be sandwiched between the main body frame 7 and the toggle block 4. In other words, the reaction force against the compressive force that tries to crush the object to be crushed 10 acts in a direction to increase the minimum gap dimension d between the fixed tooth 2 and the movable tooth 1. In the mechanism, this reaction force can be received by the main body frame 7 via the toggle block 4 and the plurality of shim plates 6. That is, the main body frame 7 can support the reaction force applied from the object to be crushed 10 against the compressive force that crushes the object 10 to be crushed.

[Shim plate configuration]
The plurality of shim plates 6 are each formed as a plate-shaped member as shown in FIGS. In the present embodiment, one shim plate (at least one shim plate of the plurality of shim plates) among the plurality of shim plates 6 is formed in the shape shown in FIG. It is formed in the shape shown in FIG. The plurality of shim plates 6 are each formed to have a predetermined plate thickness (for example, 10 mm, 20 mm, etc.).

  First, a single shim plate (hereinafter referred to as a first shim plate 61) formed in the shape shown in FIG. 3A is sandwiched between the main body frame 7 and the toggle block 4. A surface portion 6a for transmitting the reaction force of the acting compressive force and a notch portion 6c for allowing the rod 5a of the piston 5 to communicate with the inside when sandwiched are formed. Further, another shim plate (hereinafter referred to as a second shim plate 62) formed in the shape shown in FIG. 3B is also substantially the same as the first shim plate 61 shown in FIG. A surface portion 6a and a cutout portion 6c having the same shape are formed.

  Each surface portion 6a of the first shim plate 61 and the second shim plate 62 is mutually sandwiched, that is, when the plurality of shim plates are sandwiched between the main body frame 7 and the toggle block 4. It comes into surface contact and transmits the reaction force of the compressive force transmitted from the object 10 to be crushed. Further, the cutout shape of the cutout portion 6c is substantially the same in all shim plates. Thereby, even if it is a case where any shim board is piled up, the external shape of the surface part 6a and the notch part 6c is equal about the superposition | polymerization direction (sheet thickness direction of a shim board). Therefore, when these shim plates are sandwiched between the main body frame 7 and the toggle block 4, the rod 5a of the piston 5 can be surely communicated through the notch 6c. .

As shown in FIG. 3A, the first shim plate 61 is formed with a protruding portion 6 b that protrudes from the upper end portion of the second shim plate 62 when superimposed on the second shim plate 62. The plate length h ₁ of the first shim plate 61 is longer than the plate length h ₂ of the second shim plate 62 (h ₁ > h ₂ ). Further, the protruding portion 6b of the first shim plate 61 is formed with a through hole 6d penetrating in the plate thickness direction.
As described above, the minimum gap dimension d between the movable tooth 1 and the fixed tooth 2 is set according to the total thickness (the sandwiching thickness) obtained by superimposing the plurality of shim plates 6. It is like that.

[Action / Effect]
The gap adjusting mechanism of the jaw-type crushing apparatus according to one embodiment of the present invention has the following operations and effects with the above-described configuration.
First, as a setup before the crushing operation of the object 10 to be crushed, an operator (operator) pushes the rod 5a of the piston 5 to the toggle block 4 side, and the thickness according to the maximum dimension after crushing the object 10 to be crushed, A plurality of shim plates 6 are sandwiched between the toggle block 4 and the main body frame 7, and the minimum gap dimension d between the fixed tooth 2 and the movable tooth 1 is adjusted. Here, when the minimum gap dimension d is increased, the thickness and the number of sheets may be reduced, and when the minimum gap dimension d is decreased, the thickness and the number of sheets may be increased. Therefore, the minimum gap dimension d is easily adjusted. can do.

  Subsequently, when the rod 5a is pulled to the piston 5 side by the operator, the toggle block 4 is fixed with a plurality of shim plates 6 sandwiched between the body frame 7 and the toggle block 4. When the setting of the minimum gap dimension d is completed, the first shim plate 61 and the second shim plate 62 are overlapped between the toggle block 4 and the main body frame 7 as shown in FIG. It will be sandwiched in the state. FIG. 4 shows a state in which one first shim plate 61 and five second shim plates 62 are overlapped.

  The direction in which the toggle block 4 sandwiches the plurality of shim plates 6 coincides with the direction in which the toggle block 4 itself moves when the minimum gap dimension d between the fixed tooth 2 and the movable tooth 1 is increased. A reaction force against the compressive force for crushing the object 10 is transmitted to the main body frame 7 via the toggle block 4 and the plurality of shim plates 6. That is, the reaction force generated when crushing the object 10 to be crushed, such as rock or concrete glass, can be received by the main body frame 7, and the compression force can be applied to the object 10 to be crushed effectively. It becomes possible.

  Also, as shown in FIG. 4, among the plurality of shim plates 6, the protruding portion 6 b of the first shim plate 61 is formed to be larger than the upper end portion of the second shim plate 62. Therefore, for example, when the apparatus is stopped during crushing of the object to be crushed 10 and the minimum gap dimension d between the fixed tooth 2 and the movable tooth 1 is readjusted, the protruding portion 6b of the first shim plate 61 can be grasped. Therefore, the first shim plate 61 can be easily pulled out, and the minimum gap dimension d between the fixed tooth 2 and the movable tooth 1 can be increased.

  Further, for example, as shown in FIG. 1, even if the swing motion of the movable tooth 1 is locked by the biting of the metal piece 8 or the like mixed in the object 10 to be crushed, the first shim Since the protruding portion 6b of the plate 61 can be grasped, the first shim plate 61 can be easily pulled out using a tool such as a bar, and the minimum gap dimension d between the fixed tooth 2 and the movable tooth 1 is greatly opened. The biting of the metal piece 8 or the like can be released.

  As shown in FIG. 4, the plurality of shim plates 6 are overlapped so as to be substantially perpendicular to the advancing / retreating direction of the toggle block 4, that is, the reaction force acting direction. Therefore, when pulling out the first shim plate 61 from these shim plates 6, the pulling direction is substantially perpendicular to the direction of action of the compressive force and reaction force. Thereby, when compared with a structure in which the pulling direction and the acting direction of the compression force and the reaction force are not substantially vertical, the first shim plate 61 can be pulled out with a smaller force.

  In this way, by increasing the minimum gap dimension d, even if the object 10 to be crushed, the metal piece 8 or the like bites between the fixed tooth 2 and the movable tooth 1, the degree of freedom for taking it out ( Space margin) can be increased, and the crushed object 10 and the metal piece 8 can be easily removed. In addition, this makes it possible to easily restart the locked apparatus in a short time, and shorten the return time until re-operation as compared with the conventional crushing apparatus.

Further, by pulling out the first shim plate 61, the reaction force acting on the surface portions 6a of the plurality of shim plates 6 is reduced (or is not transmitted). For example, the second shim plate 62 may be further pulled out. It becomes easy and the minimum gap dimension d can be readjusted easily.
In addition, since the protruding portion 6b of the first shim plate 61 is provided with a through hole 6d penetrating in the plate thickness direction, the first shim plate 61 can be pulled out using the through hole 6d. For example, by using a lever such as a bar and lifting the through hole 6d upward in FIG. 4, the first shim plate 61 can be easily pulled out.

Thus, according to the gap adjusting mechanism of the jaw type crushing apparatus of the present invention, the minimum gap dimension d between the movable tooth 1 and the fixed tooth 2 can be increased with a simple configuration, and the object sandwiched between the gaps. The freedom of movement of the crushed material 10 can be increased. And thereby, clearance adjustment can be made easy.
In addition, it is possible to easily remove the first shim plate 61 using the through-hole 6d, and it is possible to provide a gap adjusting mechanism that allows the first shim plate 61 to be removed with a small effort.

[Others]
Although the embodiments of the present invention have been described above, the present invention is not limited to such embodiments, and various modifications can be made without departing from the spirit of the present invention.
For example, in the above-described embodiment, the gap adjusting mechanism in which one first shim plate 61 is included in the plurality of shim plates 6 is illustrated, but two or more first shim plates are included. May be.

  In the above-described embodiment, the protruding portion 6b of the first shim plate 61 is formed in a shape that protrudes from the upper end of the second shim plate 62 when superimposed on the second shim plate 62. The protruding portion 6b may be formed in a shape protruding from the edge of the second shim plate. For example, if the protruding portion 6b has a shape that does not interfere with the main body frame or the rod 5a of the cylinder 5 when sandwiched, the protruding portion 6b may be laterally or downward. A protruding shape may be used.

It is a section lineblock diagram showing composition of a crevice adjustment mechanism of a jaw type crushing device as one embodiment of the present invention. It is a side view which shows the whole structure of the self-propelled crusher to which the clearance gap adjustment mechanism of the jaw type crushing apparatus as one Embodiment of this invention was applied. It is a figure (A arrow line view in FIG. 1) which shows the structure of the shim board in the clearance gap adjustment mechanism of the jaw type crushing apparatus as one Embodiment of this invention, (a) is at least one of several shim board. The front view which shows the shape of a shim board, (b) is a front view which shows the shape of the other shim board. It is a typical perspective view which shows the state by which the several shim board was pinched in the clearance gap adjustment mechanism of the jaw type crushing apparatus as one Embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Movable tooth 1a One end part 1b Other end part 1c Pivoting point 1d Connection point 2 Fixed tooth 3 Toggle plate 4 Toggle block 5 Hydraulic cylinder 5a Rod 6 Shim board 61 1st shim board (at least one of several shim board) Shim board)
62 Second shim plate (other shim plate)
6a Surface part 6b Protruding part 6c Notch part 6d Through-hole 7 Main body frame 8 Metal piece 9 Outlet 10 Rock (crushed object)
11 Support Rod 12 Slot 13 Rotating Shaft 14 Spring 20 Crusher (Jaw Crusher)
30 body (self-propelled crusher)
d Minimum gap dimension h ₁ and h ₂ Shim plate length

Claims (3)

A fixed tooth fixed to the main body frame, and a movable tooth disposed so as to be swingable in a direction to come into contact with and away from the fixed tooth, and are inserted between the fixed tooth and the movable tooth In the jaw type crushing apparatus that crushes the object to be crushed by the swinging,
A toggle block connected to the movable tooth and provided to be movable back and forth with respect to the main body frame;
A cylinder that urges and presses the toggle block toward the body frame;
In order to transmit the reaction force from the object to be crushed during the crushing to the main body frame, the reaction force is sandwiched in parallel between the toggle block urged by the cylinder and the main body frame. A plurality of shim plates to be mounted,
Protrusion formed so that at least one shim plate of the plurality of shim plates protrudes in a substantially vertical direction with respect to the transmission direction of the reaction force from the edge of the other shim plate at the time of clamping. A gap adjusting mechanism of a jaw type crushing device, characterized by comprising a portion. The gap adjusting mechanism of the jaw type crushing apparatus according to claim 1, wherein the projecting portion is provided with a through-hole penetrating in the plate thickness direction. 2. The plurality of shim plates are each sandwiched between the toggle block and the main body frame with a plate surface substantially perpendicular to the transmission direction of the reaction force. Or the clearance adjustment mechanism of the jaw type crushing apparatus of 2.

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