JP2007326061A - Setting adjustment device of impact crusher - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a setting adjustment device which can efficiently regulate the setting of an impact crusher and effectively divert an impact inflicted to a repulsive plate due to causes such as a foreign substance. <P>SOLUTION: This setting asdjustment device incorporates the following structure: a rotor with a plurality of striking plates, is pivoted rotatably inside a main body casing, and a swing arm has its one end pivoted inside the main body casing and also, a repulsive plate fixed in a facing part to the rotor of the swing arm. Further, the swing arm is suspended from the top part of the main body casing by an adjustment rod, and a cylindrical hollow member is installed inside an adjustment casing at the top part of the main body casing. In addition, the adjustment rod is inserted through the hollow part of a cylindrical hollow member from above in the way the adjustment rod is prevented from coming off. Besides, an ascent/descent retaining mechanism for retaining the cylindrical hollow member in an ascendable/descendable manner and an ascent/descent drive means for driving the ascending/descending of the cylindrical hollow member with the help of the ascent/descent retaining mechanism, are provided inside the adjustment casing. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a set adjusting device for adjusting a gap between a striking plate and a rebound plate for determining a size of a crushed material in an impact crusher.

  Conventionally, a so-called impact crusher is known as a device for crushing natural rocks, concrete blocks, and the like emitted from a quarry or a building demolition site. The impact crusher includes a plurality of striking plates attached to the rotor, and a repelling plate disposed to face the striking plate, and the crushed object (raw material) is put into the above-mentioned state by rotating the rotor. The impact is repeatedly applied by the hitting unit and crushed, and the fragments collide with the repulsion plate and are crushed again, and fall by their own weight. The object to be crushed, which has fallen under its own weight, is crushed again by the striking portion and is blown toward the rebound plate by the impact. In this way, the object to be crushed is discharged as a crushed object (product) from the minimum gap between the striking plate and the repelling plate while being crushed by the striking plate and the repelling plate.

  Here, the minimum gap between the striking plate and the repelling plate is called a set. Therefore, the size of the crushed material generated by the impact crusher is determined by the minimum gap (set) between the rebound plate and the striking plate. For this reason, it is extremely important for maintaining the product quality to always maintain the set at regular intervals.

  In the conventional impact crusher, the above set adjustment is performed by suspending and supporting the arm, to which the repulsion plate is fixed, on the main body casing with the adjustment bolt, screwing the adjustment bolt into the female screw portion on the main body side, and rotating the adjustment bolt There is a thing which raises / lowers the said arm by doing. At this time, the adjustment bolt can be rotated manually, but an interval adjusting device that rotates the bolt by a driving means such as a drive motor has also been proposed (Patent Document 1).

There has also been proposed a method in which a hydraulic cylinder is connected to an upper end of an adjustment rod that suspends a repulsion plate, and the set adjustment is performed by moving the hydraulic cylinder to extend and lower the adjustment rod.
JP 2003-38968 A

  By the way, in the former adjustment mechanism, the adjustment bolt itself that supports the suspension of the arm is screwed into the female screw member provided in the casing of the impact crusher. When a large impact is applied to the rebound plate due to foreign matter or the like being mixed, there is a problem that the impact directly acts on the lifting mechanism of the adjusting bolt.

  In the case of the latter structure in which the adjustment rod is moved up and down with the hydraulic cylinder, if the hydraulic cylinder is always connected to the tip of the adjustment rod, when an abnormal impact is applied to the rebound plate due to the above-mentioned foreign matter mixing, The impact may directly act on the hydraulic cylinder via the adjustment rod. Therefore, after adjusting the set with the hydraulic cylinder, it is necessary to release the connection between the adjusting rod and the hydraulic cylinder. For this reason, it is necessary to attach and detach the hydraulic cylinder to / from the adjustment rod every time the set adjustment is performed, and the efficiency of the set adjustment work has been demanded.

  The present invention has been made in view of the above-described conventional problems, and can easily perform set adjustment, and even if an impact is applied to the rebound plate, the impact is not affected without affecting the lifting mechanism of the adjustment rod. An object of the present invention is to provide an impact crusher set adjustment device that can be quickly released.

In order to solve the above problems, the present invention
First, a rotor having a plurality of striking plates mounted in a main body casing is rotatably supported, and one end of a swing arm is axially supported in the main body casing, and a repelling plate is fixed to a portion of the arm facing the rotor. And an impact crusher set adjustment device configured to suspend the swing arm from the upper part of the main body casing with an adjustment rod, wherein the adjustment casing is provided on the upper part of the main body casing, A cylindrical hollow member is provided, and the adjustment rod is inserted from above into the hollow portion of the cylindrical hollow member in a state that prevents the cylindrical hollow member from being removed, and the cylindrical hollow member is held in the adjustment casing so as to be movable up and down. An impact crusher set comprising: a holding mechanism; and an elevating drive means for elevating and driving the cylindrical hollow member by the elevating and holding mechanism. Constituted by the adjusting device.

  The cylindrical hollow member can be constituted by, for example, a cylindrical hollow male screw member (19). The elevating and holding mechanism is constituted by a cylindrical female screw member (18) supported by the bottom surface (16c) of the adjustment casing (16) and screwed into the hollow male screw member (19) to hold the member. can do. The elevating drive means can be constituted by a spur gear (20) provided on the hollow male screw member (19), a hydraulic motor (29) for driving the gear (20), and the like. If comprised in this way, an adjustment rod can be raised / lowered by carrying out raising / lowering drive of a cylindrical hollow member with an raising / lowering drive means, and set adjustment can be performed. Further, since the adjustment rod is inserted into the cylindrical hollow member from above, the adjustment rod moves up and down with respect to the cylindrical hollow member even when the impact of the repulsion plate is applied to the adjustment rod. Therefore, the impact can be released without affecting the drive system.

  Second, the elevating and holding mechanism engages with the cylindrical hollow member in a screwed relationship to hold the cylindrical hollow member rotatably, and adjusts the female screw member to the adjustment. And a lifting / lowering drive means that lifts and lowers the cylindrical hollow member by rotating the cylindrical hollow member with respect to the female screw member. The impact crusher set adjusting device according to the first aspect.

  The female screw member can be constituted by, for example, a cylindrical female screw member (18). The holding part can be constituted by, for example, the bottom surface (16c) of the adjustment casing (16).

  Third, the adjustment casing is supported by a support shaft in a direction orthogonal to the adjustment rod, and is configured to be rotatable around the support shaft. The impact crusher set adjusting device according to the first or second aspect described above is configured.

  With this configuration, even if the lower end of the adjustment rod performs an arc motion in accordance with the rotation of the swing arm, the angular displacement of the adjustment rod accompanying the arc motion of the lower end is reduced by the rotation of the adjustment casing itself. It can be absorbed by movement, and smooth set adjustment and the like can be realized.

  4thly, the said cylindrical hollow member is equipped with the enlarged diameter part gradually diameter-expanded as the internal diameter of the hollow part goes below in the lower end part, The said 1st-1st characterized by the above-mentioned. 3. The impact crusher set adjusting device according to any one of 3 above.

  Thereby, the smooth raising / lowering movement of the adjustment rod can be realized, and the set adjustment can be performed smoothly.

  In this section, the reference numerals of members in the embodiment corresponding to the configuration of the present invention are shown in parentheses, but this is shown to show the correspondence, and the configuration of the present invention is related to the member. It is not limited.

  According to the set adjusting device of the present invention, the set adjustment in the impact crusher can be performed efficiently and smoothly.

  Further, the impact received by the repulsion plate can be released smoothly, and it can function as a safety device when foreign matter is mixed, and the drive mechanism of the set adjusting device is not affected by the impact.

  Embodiments of the present invention will be described below in detail with reference to the accompanying drawings. First, the configurations of the impact crusher 1 and the set adjustment mechanisms 2 and 2 'will be described.

  FIG. 1 is a cross-sectional view showing the overall configuration of an impact crusher 1 having a set adjusting mechanism 2, 2 'according to the present invention. In FIG. 1, an impact crusher 1 includes a main casing 1a having an upper opening forming a crusher main body, a casing lid 3 for opening and closing the upper opening of the main casing 1a, and a rotary shaft 5 at a lower portion in the casing 1a. The rotor 6 rotatably supported in the direction, a plurality of striking plates 4 and 4 'fixed to the outer periphery of the rotor 6, and the casing so as to face the outer peripheral surface of the rotor 6 in the casing 1a. The repulsion device 7 suspended from the upper surface of the lid 3, a plurality of repulsion plates 7 a, 7 a ′, 7 b, 7 b ′ fixed to the repulsion device 7, and the repulsion plate 7 a ′ provided above the casing lid 3. Set adjusting mechanisms 2 and 2 'for adjusting the interval (set) between the struck plate 4 and the striking plate 4 and the like. 1b is a raw material inlet, and 1c is a product outlet. In the following description, the raw material inlet 1b side is referred to as the front, the product outlet 1c side as the rear, and the width direction of the main casing 1a in FIG.

  As shown in FIG. 1, in the repulsion device 7, reference numeral 8 denotes a shaft that is rotatable in the directions of arrows b and c with a support shaft 9 pivotally supported by a bearing 9 a provided on the lower surface side of the casing lid 3. The supported first swing arm 10 is a second swing arm that is supported by the support shaft 9 so as to be rotatable in the directions of arrows b and c, and the lower surface of the first swing arm 8 is repelled. Two first repulsion plates 7a, 7a 'having the same shape are fixed in parallel in the front-rear direction to the plate mounting surface 8a. That is, repulsion plates 7 a, 7 a ′, 7 b, 7 b ′ are fixed to the facing portions of the mounting surfaces 8 a, 10 a of the swing arms 8, 10 to the rotor 6.

  On the surface of the first swing arm 8 opposite to the mounting surface 8a (see FIG. 2A), a pair of front and rear direction ribs 8b and 8b ′ are formed upright, and the ribs 8b and 8b ′. In between, a lower end connecting portion 25 of an adjusting rod 24 (described later) suspended from the set adjusting mechanism 2 is positioned, and the right and left direction pin 11 is inserted into the left and right direction through hole 25a of the connecting portion 25, and the pin 11 are fixed to the ribs 8b and 8b ′. As a result, the first swing arm 8 is suspended and supported by the adjustment rod 24 with one end pivotally supported by the support shaft 9, and the adjustment rod 24 is moved to the arrows j, k. By moving in the direction, the swing arm 8 can be rotated in the directions of arrows b and c around the support shaft 9.

  The second swing arm 10 has a rebound plate mounting surface 10a facing the rotor 6 at the tip, and two repulsive plates 7b, 7b having the same shape are formed on the rebound plate mounting surface 10a. 'Is fixed in parallel in the vertical direction. On the surface of the second swing arm 10 opposite to the mounting surface 10a (see FIG. 2B), a pair of front and rear direction ribs 10b and 10b ′ are formed upright, and the ribs 10b and 10b ′. In between, a lower end connecting portion 25 ′ of an adjusting rod 24 ′ (described later) suspended from the set adjusting mechanism 2 ′ is positioned, and the left and right direction pins 12 are passed through the left and right direction through holes of the connecting portion 25 ′. The both ends of the pin 12 are fixed to the ribs 10b and 10b ′, respectively. As a result, the second swing arm 10 is suspended and supported by the adjustment rod 24 ′ with one end pivotally supported by the support shaft 9, and the adjustment rod 24 ′ is supported by the arrow. By moving the swing arm 10 in the j and k directions, the swing arm 10 can be rotated about the support shaft 9 in the directions of arrows b and c independently of the first swing arm 8.

  Here, a space surrounded by the rotor 6 and the first repulsion plates 7a and 7a 'is referred to as a first crushing chamber K1, and a space surrounded by the rotor 6 and the second repulsion plates 7b and 7b' is defined as a first crushing chamber K1. It is called 2 crushing chamber K2. The minimum gap between the striking plate fixed to the rotor 6 and the repulsion plate is called “set”. Therefore, the set of the first crushing chamber K1 refers to the gap S1 between the repulsion plate 7a ′ of the first swing arm 8 and the striking plate 4 (see FIG. 3), and the set of the second crushing chamber K2 is the second set. The rebound plate 7b 'of the swing arm 10, the hitting plate 4, and the gap S2.

  The respective sets (gap S1, S2) are adjusted by moving the adjusting rods 24, 24 'in the ascending / descending direction (arrows j, k directions) in the set adjusting mechanisms 2, 2'. .

  The rotor 6 is rotationally driven in the direction of arrow a by rotating the horizontal rotating shaft 5 by an electric motor (not shown) provided outside the casing 2. The striking plates 4, 4 ′ are respectively inserted and fixed in insertion grooves 4 a provided parallel to the diameter surface D passing through the rotation center of the rotor 6 and at the same opening angle (every 90 degrees). Projecting from the outer peripheral surface of the rotor 6. In addition, the number of installed striking plates 4 is not limited to this. These striking plates 4 and 4 'may all be fixed at the same position in the radial direction of the rotor 6, but as shown in FIG. 1, the striking plate 4 constituting the outermost circumferential rotation track r and the outermost perimeter You may comprise so that the low-position hit | damage board 4 'in which the front-end | tip is located inside the rotation track | orbit r may be provided alternately. In this case as well, the set is the minimum gap (S1, S2) between the rebound plate 7a 'and the striking plate 4.

  The casing lid 3 can be opened in the direction of the arrow d together with the set adjusting mechanism 2, 2 ′ and the repulsion device 7 with a support shaft 3 ′ at the lower end of the rear portion of the main casing 1 a, and FIG. A state in which the casing lid 3 is rotated in the direction of arrow e and closed is shown. In FIG. 1, a two-dot chain line w is a separation line between the casing lid 3 and the main body casing 1a. Therefore, the casing lid 3 can be brought into the maintenance state by opening the rotor 6 after stopping the rotational driving of the rotor 6 when the striking plate / repulsion plate is exchanged or when an abnormality occurs. The casing lid 3 is opened and closed by a hydraulic cylinder (not shown) provided on the back thereof. Reference numeral 7c in FIG. 1 denotes a rebound plate liner supported on a support shaft 9 'different from the support shaft 9, and protects the support portion of the swing arm.

  4 to 6 show the configuration of the set adjustment mechanism 2 (or the set adjustment mechanism 2 ') according to the present invention. Next, a specific configuration of the set adjustment mechanism 2, 2 'will be described with reference to these drawings.

  In the figure, reference numeral 13 denotes a mounting base plate for the set adjusting mechanisms 2 and 2 ′ having a substantially rectangular shape, and the mounting opening 3 a penetrating through the inclined portion is closed at the upper inclined portion of the casing lid 3. A plurality of fixing bolts 13a are fixed from the upper surface side of the lid 3 (see FIG. 5). A pair of ribs 13b and 13b 'parallel to the front-rear direction are formed upright at positions along the left and right sides of the upper surface of the mounting base plate 13, and the ribs 13b and 13b' are formed with the ribs 13b and 13b '. Bearing holes 15, 15, 15 ′, 15 ′ are inserted through the two support shafts (support shafts) 14, 14, 14 ′, 14 ′ in the orthogonal direction (left-right direction), and bearings are provided in these bearing holes. 15a, 15a, 15a ′, 15a ′ are inserted and fixed. The support shafts 14, 14, 14 'and 14' are inserted into the bearings 15a and 15a and the bearings 15a 'and 15a' through the bearing holes 15, 15, 15 'and 15', respectively. 14a, 14a, 14a'14a 'is prevented from coming off.

  The plate surface of the mounting base plate 13 is provided with two circular openings 13c and 13c ′ extending in the front-rear direction, and the openings 13c are provided with the support shafts 14 and 14 in the directions of arrows f and g. The adjustment casing 16 of the set adjustment mechanism 2 is pivotally supported so that it can be rotated in the direction of arrows f and g in the same manner with the support shafts 14 'and 14' in the opening 13c '. The adjustment casing 16 ′ of the set adjustment mechanism 2 ′ is pivotally supported so that it can rotate.

  Here, the set adjustment mechanisms 2 and 2 ′ are substantially the same except for the length of the adjustment rods 24 and 24 ′ and the shape of the swing arm to be suspended. For the sake of convenience, the corresponding parts of the rear set adjustment mechanism 2 ′ are denoted by the same reference numerals as those of the set adjustment mechanism 2 and the description thereof is omitted.

  4 and 5, the adjustment casing 16 in the set adjustment mechanism 2 includes a cylindrical side plate 16a, a circular top plate 16b, and a circular bottom plate 16c, and has a substantially cylindrical shape as a whole. Bearings 16d and 16d having openings that can communicate with the openings of the bearings 15a and 15a of the mounting base plate 13 are provided in the left-right direction of the side plate 16a of the adjustment casing 16, and the bearings 16d and 16d include the above-described bearings 16d and 16d. The adjustment casing 16 is pivotally supported by the support shafts 14 and 14 of the mounting base plate 13 by inserting the support shafts 14 and 14. An oilless bush 17 is mounted between the bearings 16d and 16d and the support shafts 14 and 14 in order to realize smooth rotation (in the directions of arrows f and g) of the adjustment casing 16 (see FIG. 4).

  The adjustment casing 16 is provided with an annular rubber material R along the outer periphery of the bottom surface 16c on the bottom surface of the bottom plate 16c, and the casing 16 is placed on the mounting base plate 13 with the rubber material R. It is in a state. The rubber material R is formed of a flexible elastic body (rubber), and the rotation of the adjustment casing 16 in the directions of the arrows f and g causes the rubber material R to act as a cushioning material. It is performed within the deformation range.

  In the set adjusting mechanism 2, 18 is a cylindrical female screw member, which is on the rotation center line s of the adjusting casing 16 at an eccentric position from the right of the bottom plate 16 c of the adjusting device casing 16, The main body casing 2 is fixed in the back direction (downward) with a center line p orthogonal to the center line s as the center. A female screw portion 18 a is formed on the inner peripheral surface of the cylindrical female screw member 18.

  Reference numeral 19 denotes a cylindrical hollow male screw member having a center line p in common with the cylindrical female screw portion 18, and a male screw portion 19 a that can be screwed into the female screw portion 18 a is formed on the outer peripheral surface thereof. In addition, the male screw member 18 is screwed into the female screw member 18 with the male screw portion 19a. The hollow male screw member 19 has a cylindrical hollow portion 19b having a predetermined diameter (diameter slightly larger than an outer diameter of an adjusting rod 24 described later) centered on the center line p. An upper end portion of the hollow male screw member 19 is positioned in the vicinity of the top plate 16b inside the adjustment casing 16, and a spur gear 20 having the center line p as a central axis is horizontally fixed to the upper end portion by a bolt 21. ing. At the center of the spur gear 20, a circular central hole 20a communicating with the hollow portion 19b of the cylindrical male screw member 19 with the same diameter is provided. The lower end portion of the hollow portion 19b of the hollow male screw member 19 is formed with an enlarged diameter portion 19b ′ so that its inner diameter gradually increases downward, and the rod 24 and the hollow male screw member 19 are connected to each other. The adjustment device casing 16 is configured to smoothly rotate in the directions of arrows f and g while avoiding interference.

  A recess 20b is formed on the upper surface of the spur gear 20, a ring-shaped disc spring 22 is placed in the recess 20b, and a ring-shaped washer 23 for initial setting is placed thereon. The inside diameters of the disc spring 22 and the washer 23 are either equal to the hollow portion 19b or are formed wider. The washer 23 is initially set according to its vertical width T (see FIG. 8).

  Reference numeral 24 denotes a set adjusting rod, and hexagon nuts N, N for retaining are screwed into the upper end female screw portion 24a. The adjusting rod 24 is a long rod having a cylindrical cross section. The adjusting rod 24 is inserted into the hollow portion 19b of the hollow male screw member 19 from above, and the upper end of the hexagon nut N abuts on the washer 23. The nuts N and N are used to prevent them from coming off. The other end side of the rod 24 is suspended inside the main body casing 2 (see FIG. 1), and a connecting portion 25 at the lower end thereof is rotatably connected to the left and right direction pin 11 of the first swing arm 8. . Therefore, the first swing arm 8 is suspended by the adjustment rod 24 with the support shaft 9 as a pivot point.

  Reference numeral 26 denotes a long gear on the rotation center line s and having a center line p 'parallel to the center line p as a rotation center. The long gear 26 is pivotally supported by bearings 27a and 27b provided on the plates 16b and 16c, respectively, between the top plate 16a and the bottom plate 16b of the adjusting device casing 16, and meshes with the spur gear 20. is doing. The long gear 26 is connected to an output shaft of a hydraulic motor 29 via a chain coupling 28 on a rotary shaft 26a, and is configured to be rotationally driven in the directions of arrows h and i by the motor 29. Yes. Therefore, when the long gear 26 is rotated in the arrow h direction (arrow i direction) by the hydraulic motor 29, the hollow male screw member 19 is rotated in the arrow i direction (arrow h direction) via the spur gear 20. When the male screw member 19 rotates in the direction of arrow i (arrow h direction), the hollow male screw member 19 is moved to the center line due to the screwed relationship between the male screw member 19 and the cylindrical female screw member 18. Lowering (upward) along p (arrow j direction) (upward, arrow k direction) along with this, the adjustment rod 24 can also be raised and lowered. In this way, the set can be adjusted by moving the adjusting rod 24 up and down.

  Further, since the engagement between the hollow male screw member 19 and the cylindrical female screw member 18 is screwed, the gap S1 can be mechanically held and maintained reliably. The moving width of the spur gear 20 with respect to the long gear 26 is the adjustable width of the gap S1. For example, it is preferable to restrict the movable range in the axial direction of the hollow male screw member 19 by controlling the number of rotations of the output shaft of the hydraulic motor 29. Reference numeral 30 denotes a protective cover that covers and protects the upper end portion of the adjusting rod 24.

  As described above, since the adjustment rod 24 is only inserted through the hollow male screw member 19 from above, the rod 24 does not move even when an impact in the direction of the arrow k (upward) is applied from the repulsion device 7, for example. The impact can be released by moving in the hollow k direction (upward) in the hollow portion 19b of the hollow male screw member 19. Since the impact is not directly applied to the lifting / lowering drive system of the rod 24 (the threaded portion of the hollow male screw member 19 and the cylindrical female screw member 18, the meshing portion of the spur gear 20 and the long gear 26, the hydraulic motor 29, etc.). The lifting drive system is not damaged. The disc spring 22 has a function of absorbing an impact with respect to the movement of the adjustment rod 24 in the up-and-down direction.

  Since this invention is comprised as mentioned above, operation | movement of the impact crusher 1 and the set adjustment apparatus 2 is demonstrated next.

  In a state where the rotor 6 of the impact crusher 1 is rotating in the direction of the arrow a, an object to be crushed such as natural rock or concrete lump (such as a natural rock or a concrete lump) that has been input from an input port 1b by a conveyor (not shown) such as an external belt conveyor The raw material) is crushed in the first crushing chamber K1 until it is crushed to be smaller than the size of the gap S1, while repeatedly hitting the striking plates 4, 4 'and the repulsion plates 7a, 7a' in the first crushing chamber K1. The In the first crushing chamber K1, the striking plates 4, 4 ′, which are successively launched by the rotation of the rotor 6, crush the material to be crushed, and the material to be crushed and its fragments are repelled on the repulsion plates 7a, 7a ′ by the impact of the collision. The operation is repeated by being blown and collided, further crushed and dropped by its own weight, and collided with the striking plates 4 and 4 'and crushed.

  The object to be crushed smaller than the gap S1 is carried to the second crushing chamber K2, and the collision between the striking plates 4, 4 ′ and the repulsion plates 7b, 7b ′ is repeated in the same manner as the first crushing chamber K1. The material is crushed until it is crushed to be smaller than the gap S2, and when crushed to be smaller than the gap S2, it is discharged from the outlet 1c as a crushed material (product). In this way, a product that is smaller than the gap S2 of the second crushing chamber K2 is generated.

  During the operation of the impact crusher 1 as described above, foreign matters such as iron pieces are mixed into the intervals S1 and S2, so that a large force in the direction of the arrow k is applied to the repulsion device 7 and the rods are raised to the adjusting rods 24 and 24 ′. Even if a force in the direction (arrow k direction) is applied, the adjusting rods 24, 24 ′ can smoothly move the hollow portion 19b in the hollow male screw portion 19 in the ascending direction (arrow k direction). Can be easily escaped. At this time, since the rod 24 only moves in the hollow portion 19b, the raising / lowering of the rod 24 causes the drive system of the adjusting rod 24, that is, the hollow male screw member 19 and the cylindrical female screw member 18 to move. There is no effect on the threaded portion, the meshed portion of the spur gear 20 and the long gear 26 of the hollow male screw member 19, the hydraulic motor 29, and the like. The same applies to the set adjustment mechanism 2 '.

  Further, as shown in FIG. 7, the first swing arm 8 performs an arc motion (arc trajectory q) about the support shaft 9, so that the connecting portion 25 at the lower end of the adjustment rod 24 is also connected to the arc trajectory q. Arc movement along For this reason, the rod 24 itself moves up and down while causing an angular displacement accompanying the circular motion of the connecting portion 25. At this time, the adjustment casing 16 rotates about the support shaft 14 (in the directions of arrows f and g), and the angular displacement of the adjustment rod 24 can be absorbed. That is, when the first swing arm 8 rotates in the direction of arrow b, the adjustment casing 16 rotates in the direction of arrow f about the support shaft 14, and the first swing arm 8 moves in the direction of arrow c. In the case of rotation, the adjustment casing 16 rotates in the direction of arrow g about the support shaft 14. That is, the adjustment casing 16 itself performs a rotational movement along the direction of angular displacement of the adjustment rod 24, thereby realizing a smooth raising / lowering operation of the adjustment rod 24.

  Further, when the adjustment casing 16 performs a pivoting motion around the support shaft 14, a diameter-enlarged portion 19 b ′ is formed at the lower end portion of the hollow male screw member 19. And the hollow male screw member 19 do not interfere with each other, and the adjustment casing 16 can be smoothly rotated.

  When the impact crusher 1 is used in this way, the striking plates 4, 4 ′ and the repelling plates 7 a, 7 a ′ are worn by repeated collisions with the object to be crushed. Therefore, in order to maintain product quality, it is necessary to adjust and maintain the sets (intervals S1, S2). In particular, the set adjustment of the gap S2 is important because it determines the final size (particle size) of the crushed material.

  The set adjustment is performed by checking the gaps S1 and S2 between the striking plates 4 and 4 'and the repulsion plates 7a' and 7b 'while the rotation of the rotor 6 is stopped, and the hydraulic motors of the set adjusting mechanisms 2 and 2' 29, 29 ′ is rotated to move the position of the repulsion plates 7a ′, 7b ′ relative to the striking plate 4.

  In order to narrow the interval S1, the long gear 26 may be rotated in the direction of arrow h by the hydraulic motor 29. Then, since the spur gear 20 rotates in the arrow i direction, the hollow male screw member 19 also rotates in the same direction, and the hollow male screw member 19 descends in the arrow j direction with the rotation (see FIG. 4B). )). Accordingly, the set adjusting rod 24 placed on the spur gear 20 is also lowered. Then, the first swing arm 8 pivotally supported at the tip of the rod 24 rotates in the direction of narrowing the interval S1 around the support shaft 9, that is, in the direction of the arrow c. Therefore, the interval S1 between the repulsion plate 7a 'and the striking plate 4 can be adjusted in the direction of narrowing.

  In order to increase the interval S1, the long gear 26 may be rotated in the opposite direction (arrow i direction) by the hydraulic motor 29. In this case, since the hollow male screw member 19 rotates in the arrow h direction, the member 19 rises in the arrow k direction. Therefore, the adjustment rod 24 also moves upward, and as a result, the first swing arm 8 rotates in the direction of widening the interval S1 around the support shaft 9, that is, in the direction of the arrow b. Therefore, the interval S1 between the repulsion plate 7a 'and the striking plate 4 can be adjusted in a widening direction.

  In order to narrow the interval S2, the long gear 26 'may be rotated in the direction of the arrow h by the hydraulic motor 29'. Then, since the spur gear 20 'rotates in the direction of arrow i, the hollow male screw member 19' also rotates in the same direction, and the hollow male screw member is brought into engagement with the cylindrical female screw member 18 'along with the rotation. 19 'descends in the direction of arrow j (see FIG. 4B)). Therefore, the adjustment rod 24 ′ placed on the spur gear 20 ′ is similarly lowered. Then, the second swing arm 10 pivotally supported at the tip of the rod 24 ′ rotates about the support shaft 9 in the direction of narrowing the interval S <b> 2, that is, in the direction of the arrow c. Therefore, the distance S2 between the repulsion plate 7b 'and the striking plate 4 can be adjusted in the direction of narrowing.

  In order to increase the interval S2, the long gear 26 'may be rotated in the opposite direction (arrow i direction) by the hydraulic motor 29'. In this case, since the hollow male screw member 19 'rotates in the direction of arrow h, the member 19' moves up in the direction of arrow k. Therefore, the adjustment rod 24 ′ also moves upward, and as a result, the second swing arm 10 rotates in the direction of widening the interval S <b> 2 around the support shaft 9, that is, the arrow b direction. Therefore, the interval S1 between the repulsion plate 7b 'and the striking plate 4 can be adjusted in a widening direction.

  Even during such a set adjustment, the adjusting rod 24 moves along the arc locus q of FIG. 7, so that the rod 24 itself undergoes an angular displacement corresponding to its moving range. Since the adjustment casing 16 rotates around the support shaft 14 along the angular displacement of the adjustment rod 24, the adjustment rod 24 can be smoothly moved up and down.

  As described above, according to the set adjustment device of the present invention, it is possible to perform the set adjustment in the impact crusher 1 efficiently and smoothly by the hydraulic motor 29 without the need for attaching / detaching a cylinder or the like for each set adjustment. ,

  In addition, the adjustment rod 24 is structured so as to move up and down with respect to the hollow male screw member 19, so that the impact received by the repulsion plate when foreign matter is mixed in can be smoothly released and functions well as a safety device when foreign matter is mixed. Can be made.

  Further, the drive mechanism of the set adjusting device is not affected by the impact applied to the rebound plate.

  Further, the angular displacement accompanying the circular motion of the lower end connecting portion 25 of the adjustment rod 24 can be smoothly absorbed by rotating the adjustment casing 16 about the support shaft 14, and the adjustment rod 24 is moved up and down. Can be performed very smoothly.

  The impact crusher set adjustment device according to the present invention improves the efficiency of set adjustment, which is a troublesome work, and has excellent impact resistance and durability, so that it can withstand long-term use. It is suitable for use in offices such as.

It is side surface sectional drawing of the impact crusher which uses the set adjustment apparatus of the impact crusher which concerns on this invention. (A) is a rear view in the vicinity of the support portion of the first swing arm of the same apparatus, and (b) is a rear view in the vicinity of the support portion of the second swing arm of the same apparatus. It is side surface sectional drawing of an apparatus same as the above. (A) is sectional drawing of the set adjustment mechanism of an apparatus same as the above, XX sectional drawing of FIG. 5, (b) is a figure which shows the state which the adjustment rod fell in sectional drawing of (a). It is a YY line arrow line view of FIG. It is a side view of the set adjustment mechanism of an apparatus same as the above. It is a partial cross section figure of the set adjustment mechanism of an apparatus same as the above. It is an expanded sectional view of the adjustment rod vicinity of the apparatus same as the above.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Impact crusher 1a Main body casing 2, 2 'Set adjustment mechanism 3 Casing lid 4, 4' Strike plate 6 Rotor 7 Repulsion apparatus 7a, 7a 'Repulsion plate 7b, 7b' Repulsion plate 8 1st swing arm 9 Support shaft 10 2nd Swing arm 14, 14 'Support shaft 16 Adjustment casing 16c Bottom plate 18 Cylindrical female screw member 19 Hollow male screw member 19b Hollow portion 19b' Expanding portion 20 Spur gear 26 Long gear 29 Hydraulic motors 24, 24 'Adjustment rod N , N 'nut

Claims (4)

A rotor having a plurality of striking plates mounted in a main body casing is rotatably supported. One end of a swing arm is axially supported in the main body casing, and a repelling plate is fixed to a portion of the arm facing the rotor. A set adjustment device for an impact crusher configured to suspend a swing arm from the upper part of the main body casing with an adjustment rod,
An adjustment casing is provided on the upper part of the main body casing,
A cylindrical hollow member is provided in the adjustment casing, and the adjustment rod is inserted from above into the hollow portion of the cylindrical hollow member in a state of being prevented from coming off,
And in the said adjustment casing, the raising / lowering holding mechanism which hold | maintains the said cylindrical hollow member so that raising / lowering is possible, and the raising / lowering drive means which raises / lowers the said cylindrical hollow member with this raising / lowering holding mechanism are provided. An impact crusher set adjustment device characterized by that. The raising / lowering holding mechanism is engaged with the cylindrical hollow member in a screwed relationship to hold the cylindrical hollow member rotatably, and the female screw member is placed in the adjustment casing. A holding part for holding,
2. The impact crusher set adjusting device according to claim 1, wherein the elevating drive means moves the cylindrical hollow member up and down by rotating the cylindrical hollow member with respect to the female screw member. .   2. The adjustment casing is supported by a support shaft in a direction orthogonal to the adjustment rod, and is configured to be rotatable around the support shaft. Or the impact crusher set adjusting device according to 2 above. The said cylindrical hollow member is equipped with the enlarged diameter part gradually expanded in diameter as the internal diameter of the hollow part goes down in the lower end part, The any one of Claims 1-3 characterized by the above-mentioned. The impact crusher set adjustment device described in 1.

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