KR20200066364A - Crusher and manufacturing method of grinder - Google Patents

Abstract

The grinder includes an output table 22 for rotationally driving a crushing table for pulverizing an object to be crushed, and a transmission unit 27 for transmitting rotational driving force from the output table 22 to the crushing table. The transmission part 27 extends in the same direction as the cylindrical first fitting part 34 and the first fitting part 34 fitted in the first fitting hole 28 formed in the output table 22. The eccentric pin 29 having the cylindrical second fitting portion 35 integrally formed, the cylindrical eccentric bush 30 to which the second fitting portion 35 is fitted, and the eccentric bush formed on the crushing table It has a second fitting hole 31 into which 30 is fitted. The eccentric pin 29 is such that the first central axis C1 which is the central axis of the first fitting portion 34 and the second central axis C2 that is the central axis of the second fitting portion 35 are eccentric. Is formed. The eccentric bush 30 is formed such that the third central axis, which is the central axis of the outer diameter, and the fourth central axis, which is the central axis of the inner diameter, are eccentric.

Description

Crusher and manufacturing method of grinder

The present disclosure relates to a pulverizer and a method for manufacturing the pulverizer.

In a thermal power plant or the like, solid fuels (hereinafter referred to as raw materials) containing carbon, such as coal or biomass, are pulverized into a fine powder with a grinder (mill) and supplied to a combustion device of a boiler. The mill supplies raw materials such as coal and biomass to a rotating grinding table from a hot coal pipe disposed on a vertical upper portion. In addition, the mill is pulverized by chewing the supplied raw material between the grinding table and the grinding roller to obtain a fine powder. In addition, the mill classifies the finely divided raw material into a classifier by the conveying gas supplied from the outer circumferential side of the crushing table, and conveys only those having a small particle size to the combustion apparatus.

The grinding table is fixed on the output table of the reduction gear, and is driven by the motor through the reduction gear to rotate the vertical direction as the rotation center axis. In such a mill, since the grinding table is rotationally driven by a motor, a transmission unit that transmits the rotational driving force of the motor to the grinding table is provided between the reduction gear and the grinding table (for example, Patent Document 1).

Japanese Patent Publication No. Hei 2-245246

It is preferable that the grinding table fixed on the output table of the speed reducer is detachable so that maintenance is possible. Therefore, there is a case where the transmission unit that transmits rotational power to the crushing table has a separable structure. As a transmission portion of the rotational power provided between such a crushing table and an output table of a reduction gear, there is a key groove provided on both sides of the crushing table side and the reduction gear side, for example, and a key is inserted into the key groove.

In such a transfer part, the key size must be formed with high precision so that the key is in a state of being in close contact with the key groove (a degree of tapping with a hammer or the like). Therefore, in machining, it is difficult to precisely match the positions of the key grooves formed in the crushing table and the key grooves formed in the output table of the reduction gear, and it is difficult to manufacture a key that is in close contact with both grooves. Particularly, it is difficult in large crushing tables, where the system of machining is deteriorated. As a countermeasure for this, it was necessary to make the key slightly larger, and to perform key alignment operations such as cutting the key again in the field when installing the grinding table and the output table of the reduction gear.

In the case where a plurality of transmission parts are present, it is difficult to precisely match the positions of the key grooves formed on the respective crushing table sides and the positions of the key grooves formed on the reducer side, from multiple machining precisions at the time of factory production. It was difficult. Particularly, this tendency was remarkable when the crushing table was enlarged and the length between the plurality of transmission parts became long. For this reason, when constituting a plurality of transmission parts, in this regard, a key alignment operation for adjusting the key and key groove has also occurred in the field when the crushing table and the output table of the reduction gear are installed.

In the key fitting operation, it is necessary to suspend the crushing table once, and since the crushing table has a large weight, a large crane or the like is required to suspend it. In the key fitting operation, the key groove formed on the crushing table side is actually inserted into the key, and after measuring the size interfering, the key is removed from the crushing table and the operation of cutting the key gradually is repeated. It has been necessary for a long period of time for a substrate for hung up. For this reason, sharpening the key was a skill.

As described above, when a key groove is provided on both sides of the crushing table side and the reducer side, and a transmission unit for inserting a key into the key groove is configured, the key fitting operation in the field tends to be complicated, and the mill is caused by this. There was a possibility that the overall assembly work time would be a factor.

The present disclosure has been made in view of such circumstances, and aims to provide a pulverizer and a method for manufacturing the pulverizer that can facilitate assembly work.

In order to solve the above problems, the pulverizer of the present disclosure and a method of manufacturing the pulverizer employ the following means.

A pulverizer according to an aspect of the present disclosure includes a pulverizing unit for pulverizing a pulverized object by rotating around a rotating shaft extending in the vertical direction, a driving unit side member that is a driving unit side for rotationally driving the pulverizing unit, and the rotating shaft. Located at a predetermined distance in the radial direction, and provided with at least one transmission unit for transmitting the rotational driving force from the driving unit side member to the crushing unit, the transmission unit, the first fitting hole formed in the driving unit side member, corresponding An eccentric pin integrally provided with a first cylindrical fitting portion fitted into the first fitting hole and a second cylindrical fitting portion extending in the same direction as the first fitting portion, and the second inner eccentric pin. A cylindrical eccentric bush fitted with a fitting portion, and a second fitting hole formed in the crushing portion and fitted with the eccentric bush, the eccentric pin having a first center that is a central axis of the first fitting portion The shaft and the second central axis, which is the central axis of the second fitting portion, are formed to be eccentric, and the eccentric bush has a third central axis that is the central axis of the outer diameter, and an inner diameter that extends in the same direction as the third central axis. The fourth central axis, which is the central axis of, is formed to be eccentric.

In the above configuration, the rotational driving force from the driving member side member is transmitted to the crushing table by the transmission unit positioned at a predetermined distance apart in the radial direction from the rotation shaft. In the transmission portion, the rotational driving force is transmitted to the eccentric pin through the first fitting portion fitted with the first fitting hole. The rotational driving force transmitted to the eccentric pin is transmitted to the eccentric bush fitted with the second fitting portion of the eccentric pin. The rotational driving force transmitted to the eccentric bush is transmitted to the crushing part through a second fitting hole fitted with the eccentric bush. In this way, the rotational driving force of the driving member side member is transmitted to the crushing unit. Here, the position where the transmission unit is provided is determined by the rotational driving force and the mechanical strength of the transmission unit. In addition, in the drive unit side member, the transmission unit is provided on the outer peripheral side of the drive unit side member.

In the above configuration, the eccentric pin has a first central axis, which is the central axis of the first fitting portion fitted into the first fitting hole, and a second central axis, which is the central axis of the second fitting portion fitted into the eccentric bush. It is formed to be eccentric. In addition, the eccentric bush is formed such that the third central axis, which is the central axis of the outer diameter, and the fourth central axis, which is the central axis of the inner diameter, are eccentric. Thereby, in the state where the eccentric pin and the eccentric bush are fitted, by rotating the eccentric pin and/or the eccentric bush around each central axis, the first central axis of the first fitting portion and the outer diameter of the eccentric bush are removed. 3 By adjusting the amount of eccentricity of the central axis (that is, the separation distance between the first central axis of the first fitting portion and the third central axis of the outer diameter of the eccentric bush), a desired amount of eccentricity can be achieved. Therefore, the crushing section is enlarged, and the distance between the rotational shaft and the transmission section of the crushing section becomes longer, such that the central axis of the first fitting hole and the central axis of the second fitting hole may be spaced apart, for example. By rotating the eccentric pin and/or eccentric bush around each central axis, the first fitting is performed by adjusting the eccentricity (distance distance) between the first central axis of the first fitting portion of the eccentric pin and the third central axis of the outer diameter of the eccentric bush. The fitting part can be configured by fitting the first fitting part of the eccentric pin to the fitting hole and fitting the eccentric bush into the second fitting hole. As described above, even when the center axis of the first fitting hole and the center axis of the second fitting hole are spaced apart, the eccentric pin and/or the eccentric bush is rotated around the respective central axis for easy transmission. Since the parts can be configured, the assembly work of the grinder can be facilitated.

In addition, in the above configuration, the transmission portion can be configured by simply fitting the eccentric pin and the eccentric bush, so that no special tool or the like is used when configuring the transmission portion. Moreover, the eccentric pin and eccentric bush are not machined to adjust the dimensions. Therefore, the assembly work in the field of the grinder can be facilitated.

In addition, if the first fitting portion of the eccentric pin fits into the first fitting hole, the second fitting portion of the eccentric pin fits into the eccentric bush, and the eccentric bush fits into the second fitting hole, these Location relationships are uniquely determined. That is, in the state in which the first fitting portion of the eccentric pin is fitted into the first fitting hole, the second fitting portion of the eccentric pin is fitted into the eccentric bush, and the eccentric bush is fitted into the second fitting hole, The eccentric pins and eccentric bushes restrict each other's movements, so that they are rotated around their respective central axes to avoid misalignment. Thereby, the rotational driving force can be reliably transmitted from the driving member side member to the crushing unit.

In addition, the pulverizer according to an aspect of the present disclosure, in the horizontal plane of the driving member side member and the pulverizing portion, the regulating portion regulating relative movement in a direction orthogonal to the central axis of the rotation axis, the transfer portion with respect to the central axis It may be provided on the inner peripheral side.

In the above configuration, the restricting portion restricts the relative movement in the direction orthogonal to the central axis of the rotational axis in the horizontal plane of the drive-side member and the crushing portion.

When performing the assembly work of the grinder, for example, the horizontal movement of the driving member side and the crushing section is regulated by the fitting portion, such as the fitting structure of the concave and convex portions, so that the rotational center of the driving member side member and the crushing unit are matched. In some cases, the delivery section may be constituted by setting to. In this case, since the relative movement of the rotational center of the driving member side member and the crushing unit is regulated on the inner circumferential side of the rotational axis relative to the central axis of the rotational shaft, when configuring the transmission unit, it is possible to prioritize the alignment of the rotational center of the grinding unit have. In addition, for this reason, it is not possible to perform position alignment by moving the entire crushing part. Therefore, when the crushing section is enlarged and the distance between the rotating shaft of the crushing section and the transmission section becomes longer, a shift in the configuration of the transmission section occurs due to an error in precision during manufacture (for example, the first fitting hole position and the second fitting) In the case where a misalignment occurs in the alignment hole position), some corrective work or the like is required in the field, and there is a possibility that the work constituting the transmission section becomes complicated.

In the above configuration, when the assembly operation of the grinder is performed, when the regulating portion regulates the relative movement in the horizontal direction of the drive-side member and the crushing portion, the first fitting hole position and the second fitting hole position misalignment occur. Even if (for example, the center axis of the first fitting hole and the center axis of the second fitting hole are spaced apart), by rotating the eccentric pin and/or the eccentric bush, special additional machining is not performed and simple It is possible to configure the delivery unit.

In addition, the pulverizer according to an aspect of the present disclosure may be provided with a plurality of the delivery parts, and the plurality of the delivery parts may be arranged at equal intervals on a concentric circle centered on the rotation axis.

In the above configuration, a plurality of transmission parts are arranged at equal intervals on the concentric circles around the rotation axis. As a result, when the rotational driving force is transmitted to the pulverizing portion, the load on each transmission portion is reduced, thereby improving the reliability of each transmission portion, and the load is distributed equally on each transmission portion. Therefore, the crushing portion can be stably rotated.

In addition, in the pulverizer according to the aspect of the present disclosure, the second fitting hole may be a through hole penetrating in the vertical direction.

In the above structure, the second fitting hole formed in the crushing portion is a through hole that penetrates vertically. Thereby, when constructing a transmission part, the eccentric pin and the eccentric bush can be fitted into the first fitting hole and the second fitting hole so as to insert the second fitting hole from the vertical upward side, and the vertical upward direction is provided. Since the eccentric pin and eccentric bush can be accessed from the side, the eccentric pin and eccentric bush can be rotated around each central axis. Thereby, workability is improved and a transmission part can be comprised easily. In addition, since the eccentric pin and the eccentric bush can be easily accessed, it is possible to improve the workability of the maintenance when the crushing part is maintained, when the eccentric pin and the eccentric bush are separated and reinstalled.

In addition, the pulverizer according to one aspect of the present disclosure may include an obstruction portion that obstructs the second fitting hole from vertically upward.

The pulverizer vibrates when the pulverized material is pulverized. In the above structure, an obstruction portion for closing the second fitting hole from the vertical upward direction is provided. Thereby, even when the grinder vibrates, it is possible to prevent the eccentric pin and eccentric bush from escaping from the second fitting hole to the vertical upward side by the occluded portion.

In addition, the pulverizer according to one aspect of the present disclosure may be provided with a protrusion projecting upward vertically at the upper end of the eccentric pin.

In the above configuration, a protrusion is formed at the top of the eccentric pin. Thus, when the eccentric pin is rotated around the first central axis and the second central axis, the operator can easily and reliably rotate by gripping the protrusion. Therefore, it is possible to improve workability when constructing the transmission unit.

Further, in the grinder according to one aspect of the present disclosure, a concave portion or an opening extending radially outward may be formed on the inner peripheral surface of the eccentric bush.

In the above structure, a concave portion or an opening extending radially outward is formed on the inner peripheral surface of the eccentric bush. Accordingly, when the eccentric bush is rotated around the third central axis and the fourth central axis, it can be rotated easily and reliably by an operator engaging a tool or the like with a recess or opening from the inner peripheral surface side of the eccentric bush. Therefore, it is possible to improve workability when constructing the transmission unit. Further, even when the eccentric bush is separated from the second fitting hole during maintenance or the like, the operator can easily separate the tool from the inner circumferential surface side of the eccentric bush by engaging a tool or the like in the recess or opening.

Further, in the grinder according to one aspect of the present disclosure, the eccentric pin may be provided with a separating tool and a engaging portion capable of engaging.

In the above configuration, the engaging portion is formed on the eccentric pin. For example, the engaging portion may be formed on the upper end surface of the protrusion of the eccentric pin. Thereby, the operator can easily and reliably remove the eccentric pin from the first fitting hole by engaging and engaging the separation tool or the like in the engaging portion during maintenance.

Further, in the grinder according to one aspect of the present disclosure, grooves extending vertically in the vertical direction may be formed on the outer circumferential surfaces of the eccentric pins over the outer circumferential surfaces of the first fitting portion and the second fitting portion.

In the above structure, a groove is formed in the outer circumferential surface of the eccentric pin that fits into the bottom-shaped recessed first fitting hole that is not penetrated. Thereby, when fitting the first fitting portion of the eccentric pin to the first fitting hole, the air in the first fitting hole passes through the groove and is discharged to the outside of the first fitting hole. Therefore, since the 1st fitting part and the 1st fitting hole can be easily fitted, a transmission part can be comprised easily.

A method for manufacturing a grinder according to an aspect of the present disclosure includes claims 1 to 1, wherein grooves extending in a vertical direction are formed over the outer circumferential surfaces of the first fitting portion and the second fitting portion on the outer circumferential surface of the eccentric pin. The grinder according to claim 8.

The pulverization unit for pulverizing the pulverized object by rotating around a rotation axis extending vertically upward and downward, a driving unit side member that is a driving unit side for rotationally driving the crushing unit, and a predetermined distance in a radial direction from the rotation axis, It is a manufacturing method of a pulverizer having at least one transmission unit that transmits a rotational driving force from the driving unit side member to the crushing unit, wherein the transmission unit includes a first fitting hole formed in the driving unit side member and a corresponding first fitting hole An eccentric pin integrally provided with a cylindrical first fitting part fitted to the first and a cylindrical second fitting part extending in the same direction as the first fitting part, and the second fitting part fitted therein The paper is provided with a cylindrical eccentric bush, a second fitting hole formed in the crushing part and fitted with the eccentric bush, wherein the eccentric pin includes a first central axis which is a central axis of the first fitting part, and the first 2 The second central axis, which is the central axis of the fitting portion, is formed to be eccentric, and the eccentric bush is a third central axis which is the central axis of the outer diameter, and a central axis of the inner diameter that extends in the same direction as the third central axis. 4 The central shaft is formed to be eccentric, and with respect to the second fitting hole, an eccentric bush insertion step for inserting the eccentric bush, and a second fitting portion for inserting the second fitting portion of the eccentric pin into the eccentric bush An insertion step, and a rotation step for rotating the eccentric pin and the eccentric bush around a certain central axis of the first central axis, the second central axis, the third central axis, and the fourth central axis, and the rotation step. Thereby, a fitting step is provided for fitting the first fitting portion of the eccentric pin with the first fitting hole.

According to the present disclosure, the assembling operation of the grinder can be facilitated.

1 is a longitudinal sectional view showing a grinder according to an embodiment of the present disclosure.
FIG. 2 is a schematic plan view showing the output table of FIG. 1.
FIG. 3 is a schematic longitudinal cross-sectional view showing the transmission unit of FIG. 1.
4 is a perspective view showing the eccentric pin of FIG. 1.
5 is a plan view of the eccentric pin of FIG. 1 and an enlarged view of a main part.
6 is a perspective view showing the eccentric bush of FIG. 1.
7 is a schematic diagram showing a configuration method of the transmission unit of FIG. 1.
8 is a schematic diagram showing a configuration method of a transmission unit in FIG. 1.
9 is a schematic diagram showing a configuration method of the transmission unit of FIG. 1.
FIG. 10 is a schematic longitudinal sectional view showing the transmission portion of FIG. 1, showing a state in which the central axis of the first fitting hole and the central axis of the second fitting hole are spaced apart.

Hereinafter, an embodiment of the pulverizer according to the present disclosure and a method of manufacturing the pulverizer will be described with reference to the drawings.

Hereinafter, embodiments of the present invention will be described with reference to FIGS. 1 to 9. In addition, in this embodiment, the upward direction represents the vertical upward direction, and the downward direction represents the vertical downward direction.

As shown in FIG. 1, the grinder 1 according to the present embodiment is in communication with a cylindrical hollow housing 2 constituting the outer shell of the grinder 1 and a lower side surface of the housing 2. The air supply duct 3 for supplying the conveying gas (refer to the arrow in FIG. 1) to the inside of 2) is provided. Inside the housing 2, a solid containing carbon, such as coal or biomass fuel, on a pulverizing table (crushing part) 4 rotatable about a rotating shaft R1 along the vertical direction, and on the pulverizing table 4 A crushing roller 5 for crushing a raw material that is a fuel (pulverized material) is accommodated. Further, the grinder 1 is disposed outside the housing 2 and is provided with a motor (driving unit) (not shown) that is a driving source of the crushing table 4. In addition, the grinder 1 is disposed below the crushing table 4, connects the motor and the crushing table 4, reduces the number of revolutions of the motor, and transmits the driving force of the motor to the crushing table 4 A reduction gear (drive side member) 6 to be provided is provided.

The housing 2 has a cylindrical shape and defines a side portion 2a defining a side surface of the housing 2, a ceiling surface portion 2b defining a vertical upper end of the housing 2, and a bottom portion of the housing 2 It has a bottom surface portion 2c. The upper central portion of the housing 2 is provided with a tubular solid fuel supply pipe 7 so as to penetrate the ceiling 2b of the housing 2. The solid fuel supply pipe 7 supplies raw materials into the housing 2 from a solid fuel supply device (not shown), and extends vertically to the center position of the housing 2 along the vertical direction. A rotary separator 8 is provided on the outer periphery in a direction orthogonal to the longitudinal direction of the solid fuel supply pipe 7. In the rotary separator 8, the raw material is pulverized into a fine powder, and the fuel in the fine powder is classified by the conveying gas supplied from the outer circumferential side of the crushing table 4. Four outlet ports 9, which are classified by the rotary separator 8 and discharge fine powder having a predetermined size or less to the outside of the housing 2, are provided on the ceiling surface portion 2b of the housing 2.

The crushing table 4 is connected to a motor and a rotation through a reduction gear 6, and is rotatably driven by a rotational driving force of the motor, and fixedly detachably attached to an upper end of the rotation support 15 It has an approximately circular plate-shaped table portion 16.

The rotation support portion 15 includes a substantially annular support portion 15a that supports the outer circumferential portion of the table portion 16, a substantially cylindrical cylindrical portion 15b extending downward from the inner circumferential portion of the support portion 15a, and a cylinder. It has a flange portion 15c extending a predetermined distance radially inward from the lower end of the portion 15b.

In the support portion 15a, the inner circumferential portion is formed in a substantially planar shape, and the outer circumferential portion is curved upward. The cylindrical portion 15b forms a space S therein. The flange portion 15c is mounted on the output table 22 of the reducer 6 to be described later, and is joined to the reducer 6 through the transmission portion 27. Details of the delivery unit 27 will be described later. In addition, a concave portion 15d concave outward in the radial direction is formed at a lower end portion of the inner circumferential end of the flange portion 15c. The recessed portion 15d is formed over the entire circumferential direction of the flange portion 15c. In addition, a second fitting hole 31 penetrating in the vertical direction of the flange portion 15c is provided at a position spaced apart from the rotation shaft R1 on the outer circumference by a predetermined distance from the recess portion 15d of the flange portion 15c. It is formed, more preferably a plurality (in this embodiment, for example, two) is formed. Here, the position where the second fitting hole 31 is provided is determined by the rotational driving force from the reduction gear 6 and the mechanical strength of the transmission part 27, and the second fitting that installs the transmission part 27 The hole 31 is provided on the outer peripheral side of the output table 22 of the reduction gear 6.

The table part 16 is disposed facing the lower end of the solid fuel supply pipe 7 vertically below, and rotates together with the rotation support part 15. In addition, the upper surface of the table portion 16 extends in the horizontal direction, the central portion is higher in the vertical upward direction than the outer side, and forms an inclined shape in which the height decreases toward the outer side from the central portion, and the outer peripheral portion is curved upward again. . The outer end of the crushing table 4 and the inner surface of the side portion 2a of the housing 2 are not in contact, and a gap is empty between the crushing table 4 and the side portion 2a of the housing 2. .

The crushing roller 5 is disposed so as to face the upper surface of the table portion 16 vertically above the outer circumferential portion of the table portion 16. The grinding roller 5 is fixed to the housing 2 through the first support shaft 17, the support arm 18 and the second support shaft 19. The crushing roller 5 is rotatably supported by a bearing (not shown) at the distal end of the first support shaft 17. That is, the crushing roller 5 is rotatably supported in an inclined state in which the upper side faces the center side of the housing 2 rather than the lower side, vertically above the crushing table 4. When the grinding table 4 rotates while the outer circumferential surface is in contact with the upper surface of the grinding table 4, the grinding roller 5 is capable of being pulled and rotated by receiving a rotational force from the grinding table 4. However, when actually crushing the raw material, a gap of several mm is set between the crushing roller 5 and the upper surface of the table portion 16, and the crushing roller 5 is rotated by pushing in the raw material.

The reduction gear 6 is connected to a motor and a rotation by a drive shaft (not shown), and is disposed above the gear part 21 to reduce the number of revolutions of the motor, and rotates with the gear part 21 It has an output table 22 that is connected.

The output table 22 is a substantially circular plate shape, and rotates clockwise as viewed from the top, with respect to the rotation axis R1 along the vertical direction, by the rotational driving force transmitted through the gear portion 21. A substantially circular protrusion 22a is formed at a substantially center of the upper surface of the output table 22 in a plan view projecting upward. Further, on the outer circumferential side of the upper surface of the output table 22, on the concentric circle centered on the rotation axis R1 of the output table 22, a first fitting hole 28 having a concave downward cross-section approximately circular is formed, more preferably For example, a plurality (two in this embodiment) are formed at equal intervals on a concentric circle centered on the rotation axis R1.

Next, the bonding mode of the crushing table 4 and the reduction gear 6 is demonstrated in detail.

The crushing table 4 and the reduction gear 6 are joined by a regulating portion 26 and a transmitting portion 27.

The restricting portion 26 is constituted by a concave portion 15d formed in the flange portion 15c of the crushing table 4 and a projection 22a provided on the output table 22 of the reduction gear 6. The regulating portion 26 is fixed so that the outer circumferential portion of the protruding portion 22a is fitted into the concave portion 15d, so as to have a so-called uneven engagement structure. Therefore, in the regulating portion 26, the side surface of the concave portion 15d and the side surface of the protruding portion 22a are brought into contact, so that the reduction gear 6 and the crushing table 4 are in a horizontal direction orthogonal to the rotational axis R1. The relative movement is regulated to make the rotation center of the reduction gear 6 and the grinding table 4 match. In addition, in the regulating portion 26, the upper surface of the concave portion 15d and the upper surface of the outer circumferential portion of the protruding portion 22a are brought into contact, thereby restricting the relative movement of the reduction gear 6 and the grinding table 4 in the vertical direction. have. With respect to the rotational shaft R1, since the regulating part 26 of the reduction gear 6 and the crushing table 4 is regulated on the inner circumferential side than the transmission part 27, the alignment of the center of rotation of the crushing table 4 is given priority. .

In the present embodiment, the transmission unit 27 is formed on a concentric circle centered around the rotation axis R1 of the crushing table 4 and the output table 22, as shown in FIG. 2. More preferably, a plurality (for example, two in this embodiment) are arranged at equal intervals on a concentric circle centered on the rotation axis R1, and are arranged at a point-symmetrical position based on the rotation axis R1. In addition, the two transmission parts 27 are spaced at a distance L (in this embodiment, a large-scale grinder is assumed, for example, 0.8 m to 2 m). The transmission unit 27 regulates the relative movement of the output table 22 of the reduction gear 6 and the grinding table 4 in the rotational direction. That is, the transmission part 27 transmits the rotation driving force of the output table 22 to the crushing table 4. At this time, the two transmission parts 27 reduce the load load of the rotational power to improve reliability, and the load load between the two transmission parts 27 is equally distributed.

In addition, as shown in FIG. 3, the transmission unit 27 is inserted into the first fitting hole 28 formed in the output table 22 of the reduction gear 6 and the first fitting hole 28. The eccentric pin 29 to be fitted, the cylindrical eccentric bush 30 to which the eccentric pin 29 is fitted, and the eccentric bush 30 to be formed on the flange portion 15c of the crushing table 4 are fitted. The paper is constituted by a second fitting hole 31 and a pressure plate (obstruction part) 32 that closes the second fitting hole 31 from above.

The first fitting hole 28 does not penetrate the output table 22, and is a concave shape with a bottom of a substantially circular cross section concave downward.

The second fitting hole 31 is a through hole penetrating the flange portion 15c in the vertical direction. That is, the opening of the upper part of the second fitting hole 31 is opened in the space S formed inside the cylindrical portion 15b. In addition, the diameter of the second fitting hole 31 is formed larger than the diameter of the first fitting hole 28.

The eccentric pin 29, as shown in FIGS. 3 and 4, has a cylindrical first fitting portion 34 and a first fitting portion 34 that fit into the first fitting hole 28. The cylindrical second fitting part 35 extending upward from the upper end of the cylinder, and the cylindrical small diameter part 36 extending upward from the upper end of the second fitting part 35, and the upper end of the small diameter part 36 It is a metal member which integrally has a projection 37 projecting upward from.

The outer diameter of the first fitting portion 34 is formed smaller than the outer diameter of the second fitting portion 35, and is formed slightly smaller than the diameter of the first fitting hole 28, so that the first fitting The fitting portion 34 and the first fitting hole 28 are brought into a tight fitting state. Further, the length of the first fitting portion 34 in the vertical direction is formed to be approximately the same or slightly shorter than the height of the bottom recessed first fitting hole 28. The first fitting portion 34 is fitted so that the outer circumferential surface 34a contacts the side surface of the first fitting hole 28.

The outer diameter of the second fitting portion 35 is formed larger than the outer diameter of the first fitting portion 34, and is formed slightly smaller than the inner diameter of the eccentric bush 30, so that the second fitting portion ( 35) and the inner circumferential surface (30b) of the eccentric bush (30) is in a tight fit state. The length of the second fitting portion 35 in the vertical direction is shorter than the height of the eccentric bush 30, and a small diameter portion 36 is formed at the upper portion. The second fitting portion 35 is fitted with the eccentric bush 30 so that the outer circumferential surface 35a contacts the inner circumferential surface 30b of the eccentric bush 30.

The first central axis C1 of the first fitting portion 34 and the second central axis C2 of the second fitting portion 35 extend in the same direction. The 1st fitting part 34 and the 2nd fitting part 35 are arrange|positioned so that a part of the outer periphery of each other may overlap in the axial direction of the 1st central axis C1 and the 2nd central axis C2, when viewed in plan view. have. That is, the outer circumferential surface 34a of the first fitting portion 34 and the outer circumferential surface 35a of the second fitting portion 35 are formed so that there is no step difference in part (in Figs. 3 and 10, there is no step difference). It shows the cross section of the part to be).

In addition, as shown in FIG. 3, the first central axis C1 of the first fitting portion 34 and the second central axis C2 of the second fitting portion 35 are spaced apart by a predetermined distance, and are eccentric. It is formed as possible. The predetermined distance to be eccentric is that the pulverizer 1 is enlarged, and the distance between the rotational axis R1 of the output table 22 and the transmission portion 27 becomes longer, for example, and the central axis of the first fitting hole 28 is made. 2 It is set by assuming a range in which the central axis of the fitting hole 31 is spaced apart.

The small-diameter portion 36 has the same central axis as the second central axis C2 of the second fitting portion 35 and has an outer diameter smaller than the outer diameter of the second fitting portion 35. That is, the outer peripheral surface 36a of the small-diameter portion 36 is spaced apart from the inner peripheral surface 30b of the eccentric bush 30. The length of the small-diameter portion 36 in the vertical direction is formed such that when the transmission portion 27 is configured, the upper end portion of the small-diameter portion 36 protrudes from the pressure plate 32.

The protruding portion 37 protrudes upward from the central region of the small diameter portion 36. Further, the projecting portion 37 has a substantially rectangular parallelepiped shape in which a flat portion is formed on the side surface, and has a shape in which a corner portion of the rectangular parallelepiped is cut out. By holding the protrusion 37 by the operator, the eccentric pin 29 can be rotated around each central axis. In addition, in the substantially central region of the upper surface of the protruding portion 37, a downwardly concave engaging portion 38 is formed. On the inner circumferential surface of the engaging portion 38, a separation tool (for example, an eye bolt, etc.) (not shown) and a structure (for example, a screw groove, etc.) capable of engaging are formed.

Further, in the eccentric pin 29, a groove 39 extending in the vertical direction is formed as shown in FIG. The groove 39 is formed so as to be concave radially inward on the surface where the outer peripheral surface 34a of the first fitting portion 34 and the outer peripheral surface 35a of the second fitting portion 35 are no step. Further, at least one of the grooves 39 is formed over the entire length of the surface where there is no step. In addition, in FIG. 5, the projection part 37 is omitted in relation to the illustration. When fitting the first fitting portion 34 of the eccentric pin 29 into the bottom recessed first fitting hole 28 that is not penetrated, the air in the first fitting hole 28 is grooved ( 39) and exits, and is discharged to the outside of the first fitting hole 28.

The eccentric bush 30 is a cylindrical metal member, as shown in FIGS. 3 and 6, and the second fitting hole (so that the outer peripheral surface 30a contacts the side surface of the second fitting hole 31) 31). The eccentric bush 30 is formed such that the third central axis, which is the central axis of the outer diameter, and the fourth central axis, which is the central axis of the inner diameter, are eccentric. The third central axis and the fourth central axis extend in the same direction. In other words, the eccentric bush 30 is eccentrically spaced apart by a predetermined distance from the third central axis and the fourth central axis in plan view. Therefore, the eccentric bush 30 is formed so that when the cross section in the horizontal direction is viewed, the plate thickness is not uniform, but the plate thickness gradually changes.

The predetermined distance to be eccentric is that the pulverizer 1 is enlarged, and the distance between the rotational axis R1 of the output table 22 and the transmission portion 27 becomes longer, for example, and the central axis of the first fitting hole 28 is made. 2 It is set by assuming a range in which the central axis of the fitting hole 31 is spaced apart.

A cutout (concave portion or opening) 40 is formed on the lower surface of the eccentric bush 30. The notch 40 is formed so that the inner peripheral surface 30b and the outer peripheral surface 30a of the eccentric bush 30 communicate. The operator can easily separate the eccentric bush 30 by joining a tool or the like to the notch 40.

The pressure plate 32 is a plate-shaped member, as shown in FIG. 3, and a circular central opening 41 through which the protrusion 37 of the eccentric pin 29 is inserted is formed in a substantially central region. The diameter of the central opening 41 is larger than the protruding portion 37 and smaller than the small-diameter portion 36. That is, since the pressing plate 32 closes a part of the upper opening of the second fitting hole 31 from above, the eccentric pin 29 and the eccentric bush 30 are provided from the second fitting hole 31. There is no escape from the upper side. Further, the pressing plate 32 is fixed to the flange portion 15c of the crushing table 4 by bolts 42.

Next, the joining method of the crushing table 4 and the reduction gear 6 which are part of the assembly operation of the grinder 1 will be described in detail.

First, the rotary support 15 of the crushing table 4 is suspended by a crane or the like, and is loaded on the output table 22 of the reduction gear 6. At this time, the concave portion 15d of the rotation support portion 15 and the projection portion 22a of the output table 22 are stacked so as to fit, thereby constituting the restricting portion 26. At this time, the table part 16 is not yet provided in the rotation support part 15. Since the table part 16 is not provided in the rotation support part 15, the inside space S of the rotation support part 15 can enter and exit a worker or the like. Therefore, the work constituting the transmission unit 27 described below can be performed by an operator in the space S.

Subsequently, the transmission unit 27 is configured. A method of constructing the transmission unit 27 will be described with reference to FIGS. 7 to 9. 7 to 9, reference numeral C3 denotes the central axis of the first fitting hole 28, and reference numeral C4 denotes the central axis of the second fitting hole 31. As shown in FIG. In addition, reference numeral 30b' in Fig. 8 denotes the position of the inner circumferential surface of the eccentric bush 30 before rotation.

When constructing the delivery part 27, it can be performed in the following procedure, for example. First, the positions of the first fitting hole 28 and the second fitting hole 31 are aligned so that all of the first fitting hole 28 is visible from the second fitting hole 31 when viewed from the top. Subsequently, the eccentric bush 30 is inserted into the second fitting hole 31 to fit the second fitting hole 31 and the eccentric bush 30 (eccentric bush insertion step). Further, the eccentric bush 30 and the second fitting hole 31 are fitted with a clearance fitting, and at this stage, the eccentric bush 30 can rotate within the second fitting hole 31. So it fits.

Next, the eccentric pin 29 is inserted into the eccentric bush 30 (second fitting part insertion step). The eccentric pin 29 is inserted such that the first fitting portion 34 is downward. At this time, the first fitting portion 34 interferes with the upper surface of the output table 22 and is not fitted with the first fitting hole 28 (see FIG. 7 ). Further, the eccentric pin 29 and the eccentric bush 30 are fitted with a clearance fit, and at this stage, the eccentric pin 29 in the eccentric bush 30 has the first central axis C1 and the second center. It is fitted so that it can rotate around axis C2.

Subsequently, the eccentric bush 30 into which the first fitting portion 34 is inserted is rotated around the third central axis and the fourth central axis in the horizontal plane direction as indicated by the arrow in FIG. ) Position (rotation step). Next, the eccentric pin 29 is rotated around the first central axis C1 and the second central axis C2 in the horizontal plane direction as indicated by the arrow in FIG. 9 to adjust the position of the eccentric pin 29 (rotation step). . In addition, adjustment of the eccentric bush 30 and the eccentric pin 29 may be performed by rotating the eccentric bush 30 and the eccentric pin 29 simultaneously. Further, the adjustment by the eccentric bush 30 and the adjustment by the eccentric pin 29 may be alternately repeated multiple times.

By adjusting the eccentric bush 30 and the eccentric pin 29, the first central axis C1 of the first fitting portion 34 of the eccentric pin 29 and the central axis C3 of the first fitting hole 28 Matches. After aligning the first central axis C1 of the first fitting portion 34 of the eccentric pin 29 with the central axis C3 of the first fitting hole 28, the eccentric pin 29 is fitted with the first fitting hole ( 28) to fit the eccentric pin 29 and the first fitting hole 28 (fitting step). In addition, when the first fitting portion 34 fits into the first fitting hole 28, the eccentric pin 29 and the eccentric bush 30 restrict the movement of each other, so that they cannot rotate. Becomes

After inserting the eccentric pin 29 into the first fitting hole 28, after fitting the eccentric pin 29 and the first fitting hole 28, the pressure plate 32 is attached to the flange portion 15c. Install it. The pressure plate 32 is arranged such that the central opening 41 in which the protrusion 37 is formed in the center is inserted, and is provided in the flange portion 15c by the bolt 42. In this way, the transmission unit 27 is configured.

When the transmission unit 27 is configured, the worker exits the space S, after which the table unit 16 is fixed to the support unit 15a. In this way, the grinding table 4 and the speed reducer 6 are joined. In addition, when configuring the delivery part 27, it is not limited to the said procedure, You may change the procedure suitably.

According to this embodiment, the following operational effects are exhibited.

In the present embodiment, the rotation driving force from the output table 22 is transmitted from the rotation shaft R1 to the transmission section 27 located in a predetermined radial direction. In the transmission unit 27, the rotational driving force is transmitted to the eccentric pin 29 through the first fitting portion 34 that is fitted with the first fitting hole 28. The rotational driving force transmitted to the eccentric pin 29 is transmitted to the eccentric bush 30 fitted with the second fitting portion 35 of the eccentric pin 29. The rotational driving force transmitted to the eccentric bush 30 is transmitted to the crushing table 4 through the second fitting hole 31 fitted with the eccentric bush 30. In this way, the rotational driving force of the output table 22 of the reduction gear 6 is transmitted to the grinding table 4.

In addition, the eccentric pin 29 is fitted to the first fitting hole 28, the first central axis C1 which is the central axis of the first fitting portion 34, and the second fitted to the eccentric bush 30. The second central axis C2, which is the central axis of the fitting portion 35, is formed to be eccentric. The eccentric bush 30 is formed such that the third central axis, which is the central axis of the outer diameter, and the fourth central axis, which is the central axis of the inner diameter, are eccentric. Thereby, in the state where the eccentric pin 29 and the eccentric bush 30 are fitted, the first fitting part is rotated by rotating the eccentric pin 29 and/or the eccentric bush 30 around their respective central axes. The eccentric amount of the first central axis C1 of (34) and the third central axis of the outer diameter of the eccentric bush 30 (that is, the first central axis C1 of the first fitting portion 34 and the outer diameter of the eccentric bush 30) By adjusting the distance (of the third central axis of), it is possible to achieve a desired amount of eccentricity. As the crushing table 4 is enlarged and the distance between the rotating shaft R1 of the crushing table 4 and the transmission portion 27 increases, the precision of machining decreases, for example, as shown in FIG. 10. , The central axis C3 of the first fitting hole 28 and the central axis C4 of the second fitting hole 31, which are holes for connecting the crushing table 4 and the reducer 6, have a predetermined distance (in FIG. 10). When the distance α is spaced apart (that is, the center of the first fitting hole 28 and the center of the second fitting hole 31, which are holes for connecting the grinding table 4 and the reduction gear 6, are shifted) Occurred). Even in this case, the eccentric pin 29 and/or the eccentric bush 30 is rotated around each central axis, and the first central axis C1 and eccentric bush of the first fitting portion 34 of the eccentric pin 29 ( By adjusting the eccentricity (distance) of the third central axis of the outer diameter of 30), the first fitting portion 34 of the eccentric pin 29 is fitted to the first fitting hole 28, and the second The eccentric bush 30 can be fitted with respect to the fitting hole 31 to constitute the transmission portion 27. Thus, even when the central axis C3 of the first fitting hole 28 and the central axis C4 of the second fitting hole 31 are spaced apart, the eccentric pin 29 and/or the eccentric bush 30 By simply rotating around each central axis, the transmission unit 27 can be easily constructed, and thus the assembly operation of the grinder 1 can be facilitated.

In addition, since the transmission portion 27 can be configured only by fitting the eccentric pin 29 and the eccentric bush 30, there is no need to use a special tool or the like when configuring the transmission portion 27. Further, the eccentric pin 29 and the eccentric bush 30 are not machined to adjust the dimensions. Therefore, the assembling work of the grinder 1 can be facilitated.

In addition, the first fitting portion 34 of the eccentric pin 29 is fitted into the first fitting hole 28, and the second fitting portion 35 of the eccentric pin 29 is eccentric bush 30 And the eccentric bush 30 fits into the second fitting hole 31, their positional relationship is uniquely determined. That is, the first fitting portion 34 of the eccentric pin 29 fits into the first fitting hole 28, and the second fitting portion 35 of the eccentric pin 29 fits into the eccentric bush 30. And the eccentric bush 30 is fitted into the second fitting hole 31, the eccentric pin 29 and the eccentric bush 30 regulate each other's movements, so that each center There is no positional shift caused by rotation around the axis. Thereby, the rotational driving force can be reliably transmitted from the output table 22 to the grinding table 4.

In addition, the regulation unit 26 regulates the relative movement in the direction orthogonal to the central axis of the rotation axis R1 in the horizontal plane of the rotation support unit 15 of the output table 22 and the grinding table 4. That is, the regulation part 26 regulates the relative slide movement of the rotation support part 15 of the output table 22 and the crushing table 4.

In this embodiment, the relative slide movement of the rotation support 15 of the output table 22 and the crushing table 4 is regulated by the fitting structure of the concave and convex portions, and the like, so that the output table 22 and the crushing table 4 In the state where the rotation centers of the motors are matched, the transmission unit 27 is configured. In this case, the first fitting hole 28 and the second fitting hole 31 are regulated relative to the center axis at the inner circumferential side (ie, the rotation center axis side) relative to the central axis. By this, when configuring the transmission unit 27, the alignment of the rotation center of the output table 22 is prioritized, so that rotation accuracy can be secured and stable rotation can be obtained.

As the grinder 1 is enlarged and the distance between the rotational shaft R1 of the crushing table 4 and the transmission portion 27 becomes longer, due to errors in precision during manufacturing, the first fitting hole 28 and the second fitting There is a case where a shift occurs in the relative position of the hole 31 (that is, when the central axis C3 of the first fitting hole 28 and the central axis C4 of the second fitting hole 31 are spaced apart). . In particular, as in the present embodiment, the grinder 1 is large, the crushing table 4 is enlarged, and the distance between the rotational shaft R1 of the crushing table 4 and the transmission portion 27 becomes longer, and thus, due to the precision of machining, For example, there may be a case where the center axis C3 of the first fitting hole 28 and the center axis C4 of the second fitting hole 31 are separated from each other, and displacement may occur. Likewise, when there are a plurality of transmission units 27 and the distance L of the plurality of transmission units 27 becomes farther, shifting tends to occur.

However, since the relative movement of the rotating support portion 15 of the output table 22 and the crushing table 4 is regulated, when configuring the transmission portion 27, the output table 22 or the rotating support portion 15 is Positioning cannot be performed by moving. Therefore, in a conventional configuration (for example, a configuration in which a key and a key groove are provided), a large crane or a special tool is used to align the positions of the first fitting hole 28 and the second fitting hole 31 positions. Since any additional work or the like is performed in the field using a lamp, there is a possibility that the work composing the transmission unit 27 becomes complicated and the working time is prolonged.

In the present embodiment, when the assembly operation of the grinder 1 is performed, the regulation unit 26 regulates the relative slide movement of the output table 22 and the rotation support 15 of the crushing table 4, When the first fitting hole 28 and the second fitting hole 31 are misaligned (that is, the central axis C3 of the first fitting hole 28 and the central axis of the second fitting hole 31) Even if C4 is spaced apart), as described above, by rotating the eccentric pin 29 and/or eccentric bush 30 around their respective central axes, a large crane, a special tool, or the like is used in the field. The transfer unit 27 can be configured simply without performing additional finishing work or the like.

In addition, a plurality (two in this embodiment) of the transmission parts 27 are arranged at equal intervals on a concentric circle centered on the rotation axis R1. By this, when transmitting the rotational driving force to the crushing table 4, the load of each load is reduced in each of the transmission parts 27, thereby improving the reliability of each of the transmission parts 27, and each transmission part 27. In, the load is distributed equally. Therefore, the grinding table 4 can be rotated stably.

In addition, the second fitting hole 31 formed in the crushing table 4 is a through hole penetrating in the vertical direction. In a configuration other than a through hole, the crushing table 4 is hung up, so that the eccentric pin 29 and the eccentric bush 30 need to be fitted and adjusted, but in the present embodiment, the transmission portion 27 When constructing the, the eccentric pin 29 and the eccentric bush 30 are inserted into the first fitting hole 28 and the second fitting hole 31 so as to insert the second fitting hole 31 from above. Can be customized. In addition, since the eccentric pin 29 and the eccentric bush 30 can be accessed from above, the eccentric pin 29 and the eccentric bush 30 can be rotated around each central axis from above. Thereby, workability is improved and the transmission part 27 can be comprised easily. In addition, since the eccentric pin 29 and the eccentric bush 30 can be easily accessed, when the grinding table 4 is maintained, when the eccentric pin 29 and the eccentric bush 30 are separated and reinstalled, etc. Can improve the workability of the maintenance.

The grinder 1 vibrates the crushing table 4 of the table portion 16 when pulverizing the pulverized material. In the present embodiment, a pressure plate 32 for closing the second fitting hole 31 from above is provided. Thereby, even when the grinder 1 vibrates and the eccentric bush 30 moves upward, for example, the upper face of the eccentric bush 30 and the pressure plate 32 interfere, so the second fitting hole 31 ), it is possible to prevent the eccentric bush 30 from coming out. Further, even when the grinder 1 vibrates and the eccentric pin 29 moves upward, for example, the upper surface of the small-diameter portion 36 and the pressure plate 32 interfere with each other, from the second fitting hole 31. The eccentric pin 29 can be prevented from escaping upward.

In addition, a protrusion 37 is formed on the upper end of the eccentric pin 29. Thereby, when the eccentric pin 29 is rotated around the first central axis and the second central axis, the operator can easily and reliably rotate the protrusion 37. Therefore, it is possible to improve workability when constructing the transmission unit 27.

Further, a cutout 40 is formed at the lower end of the eccentric bush 30. By this, when the eccentric bush 30 is rotated around the third central axis and the fourth central axis, on the inner circumferential surface 30b side of the eccentric bush 30, an operator joins a tool or the like to the notch 40, It can be rotated easily and reliably. Therefore, it is possible to improve workability when constructing the transmission unit 27. In addition, even when the eccentric bush 30 is removed from the second fitting hole 31 during maintenance or the like, the tool 40 is easily connected to the notch 40 on the inner circumferential surface 30b side of the eccentric bush 30. Can be separated.

In addition, a locking engagement portion 38 is formed on the eccentric pin 29. Thereby, the operator can easily and reliably separate the eccentric pin 29 from the first fitting hole 28 by joining a tool or the like to the engaging portion 38 during maintenance or the like. Further, the tool may be engaged with the engaging portion 38, and the eccentric pin 29 may be rotated by the tool.

Further, a groove 39 is formed on the outer circumferential surface of the eccentric pin 29. By this, when fitting the first fitting portion 34 of the eccentric pin 29 that fits into the first fitting hole 28 with a recessed bottom that is not penetrated, it fits into the first fitting hole 28, When the air in the first fitting hole 28 passes through the groove 39, it is discharged to the outside of the first fitting hole 28, so that the fitting of the eccentric pin 29 is not suppressed. Accordingly, since the first fitting portion 34 and the first fitting hole 28 can be easily fitted, the transmission portion 27 can be easily configured.

In addition, this invention is not limited to the invention which concerns on the said embodiment, A deformation|transformation can be suitably carried out in the range which does not deviate from the summary.

For example, in the above embodiment, an example has been described in which the engaging portion 38 is formed in the projection 37 of the eccentric pin 29, but the present disclosure is not limited to this. The engaging portion may be formed on the eccentric pin 29, and may be formed over the protruding portion 37 and the small diameter portion 36 as well as the protruding portion 37, for example.

In addition, the number of the transmission units 27 is not limited to two. The transmission unit 27 may be a singular number or a plurality of three or more (however, two or more plurals are preferred rather than a singular number). In addition, when a plurality of transmission parts 27 are provided, the plurality of transmission parts 27 are disposed at equal intervals on concentric circles around the rotation axis R1 of the crushing table 4 and the output table 22, or the rotation axis It is suitable if it is arranged in a point-symmetrical position based on R1, or if it is arranged to satisfy any condition.

In addition, in the above-described embodiment, when the transmission portion 27 is configured, after the eccentric bush 30 is inserted into the second fitting hole 31, the eccentric pin 29 and the eccentric bush 30 are fitted. Although, an example has been described in which the first fitting portion 34 of the eccentric pin 29 is fitted into the first fitting hole 28, the present disclosure is not limited to this. For example, after fitting the first fitting portion 34 of the eccentric pin 29 into the first fitting hole 28, the eccentric pin 29 and the eccentric bush 30 may be fitted. In this case, while the first fitting portion 34 is fitted into the first fitting hole 28, the eccentric pin 29 is rotated around the first central axis C1 and the second central axis C2, The position of the eccentric pin 29 is adjusted. By rotating the eccentric pin 29, the space between the second fitting portion 35 and the second fitting hole 31 of the eccentric pin 29 is orthogonal to the axial direction of the eccentric bush 30 and Make it the same shape. Then, in the same shape, the eccentric bush 30 is inserted into the space. When the eccentric bush 30 is inserted, the eccentric pin 29 and the eccentric bush 30 are fitted, and the eccentric bush 30 and the second fitting hole 31 are fitted. In this way, the transmission unit 27 is configured.

1: grinder
2: housing
3: Air supply duct
4: grinding table (crushing part)
5: Crushing roller
6: Reducer (absence of the driving part)
7: solid fuel supply pipe
8: Rotary separator
9: exit port
15: rotating support
15a: support
15b: cylindrical portion
15c: flange
15d: recess
16: Table part
21: gear part
22: Output table
22a: protrusion
26: Regulatory Department
27: delivery unit
28: first fitting hole
29: Eccentric pin
30: eccentric bush
31: second fitting hole
32: compression plate (occlusion)
34: first fitting part
35: second fitting portion
36: small neck
37: protrusion
38: engaging portion
39: Home
40: Cutout (concave or opening)

Claims (10)

A crushing unit for pulverizing the object to be pulverized by rotating around a rotation axis extending vertically upward and downward;
A driving unit side member which is a driving unit side for rotationally driving the crushing unit,
Located at a predetermined distance in the radial direction from the rotating shaft, and provided with at least one transmission unit for transmitting a rotational driving force to the crushing unit from the driving unit side member,
The transmission unit includes a first fitting hole formed in the driving part side member, a cylindrical first fitting part fitted into the first fitting hole, and a cylindrical agent extending in the same direction as the first fitting part 2 an eccentric pin having an integrally fitting portion, a cylindrical eccentric bush fitted with the second fitting portion therein, and a second fitting hole formed in the crushing portion and fitted with the eccentric bush ,
The eccentric pin is formed such that the first central axis, which is the central axis of the first fitting portion, and the second central axis, which is the central axis of the second fitting portion, are eccentric,
The eccentric bush is formed such that the third central axis, which is the central axis of the outer diameter, and the fourth central axis, which is the central axis of the inner diameter extending in the same direction as the third central axis, are eccentric. According to claim 1,
A pulverizer comprising a regulating portion for restricting relative movement in a direction orthogonal to the central axis of the rotating shaft in a horizontal plane of the driving portion side member and the crushing portion, on the inner circumferential side of the pulverizing portion relative to the transmission portion. The method according to claim 1 or 2,
The delivery unit is provided in plural,
The pulverizer is disposed at equal intervals on a concentric circle centered on the rotation axis. The method according to any one of claims 1 to 3,
The second fitting hole is a pulverizer, which is a through hole penetrating vertically. The method of claim 4,
A pulverizer having an obstruction portion for closing the second fitting hole from the vertical upward direction. The method of claim 4 or 5,
The upper end of the eccentric pin, the pulverizer is formed with a protrusion projecting upward vertically. The method according to any one of claims 1 to 6,
On the inner circumferential surface of the eccentric bush, a concave portion or an opening extending radially outward is formed. The method according to any one of claims 1 to 7,
The eccentric pin, the crushing machine is formed with a locking engagement portion that can be engaged with the separation tool. The method according to any one of claims 1 to 8,
On the outer circumferential surface of the eccentric pin, a groove that extends vertically across the outer circumferential surfaces of the first fitting portion and the second fitting portion is formed. A crushing unit for pulverizing the object to be pulverized by rotating around a rotation axis extending vertically upward and downward;
A driving unit side member which is a driving unit side for rotationally driving the crushing unit,
It is a method of manufacturing a pulverizer having at least one transmission unit which is located at a predetermined distance in a radial direction from the rotation shaft and transmits rotational driving force to the crushing unit from the driving unit side member.
The transmission unit includes a first fitting hole formed in the driving part side member, a cylindrical first fitting part fitted into the first fitting hole, and a cylindrical agent extending in the same direction as the first fitting part 2 an eccentric pin having an integrally fitting portion, a cylindrical eccentric bush fitted with the second fitting portion therein, and a second fitting hole formed in the crushing portion and fitted with the eccentric bush ,
The eccentric pin is formed such that the first central axis, which is the central axis of the first fitting portion, and the second central axis, which is the central axis of the second fitting portion, are eccentric,
The eccentric bush is formed such that the third central axis, which is the central axis of the outer diameter, and the fourth central axis, which is the central axis of the inner diameter extending in the same direction as the third central axis, are eccentric,
An eccentric bush insertion step for inserting the eccentric bush with respect to the second fitting hole,
A second fitting part inserting step of inserting the second fitting part of the eccentric pin into the eccentric bush;
A rotation step of rotating the eccentric pin and the eccentric bush around any one of the first central axis, the second central axis, the third central axis, and the fourth central axis;
A method of manufacturing a grinder comprising a fitting step for fitting the first fitting portion of the eccentric pin with the first fitting hole by the rotating step.

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