CN101534951A - Crusher and method of installing drive section - Google Patents

Abstract

The present invention provides a method of installing a pulverizer and a driving part, which can reduce the installation space, prevent damage to the bearing, shorten the life, and prevent the vibration of the driving part such as the reduction gear and the electric motor through a simple structure without being limited by the service life. . The reduction gear (11) and the fixed plate (18) are fixed through the mounting holes (18c, 18c). An insertion hole (18a) is formed in the fixing plate (18), and a rectangular groove portion (18b) is formed at a part of the inner wall of the insertion hole (18a). A coil spring (20) is installed in the groove portion (18b). The shaft member (17) is fixed to the fixed side wall (2) in the state of being inserted into the insertion hole (18a), and the coil spring (20) is installed in the groove portion (18b) and the shaft member (17) except for the notch. Between the outer peripheral surfaces of the surface (17b), a force is applied to separate the inner wall of the insertion hole (18a) from the shaft member (17) along the periphery of the rotation shaft (60) in the opposite direction of the rotation direction of the rotation shaft (60).

Description

How to install the pulverizer and drive unit

technical field

The present invention relates to a pulverizer capable of preventing vibration of a drive unit caused by load fluctuations when pulverizing objects to be processed, and a method of installing the drive unit for preventing vibration.

Background technique

In order to solve problems such as environmental pollution and increase in industrial waste, it is increasingly important to form a recycling society. For example, in a molding factory that manufactures molded products or molded parts using synthetic resins represented by plastics, unnecessary parts or defective molded products called sprue runners generated during molding are recycled to improve Resource recycling rate of resin materials.

In the recycling of resin materials, the recycled runner waste is crushed into crushed pieces of a predetermined size with a shredder and used as recycling resources. This kind of pulverizer, in order to make the flow channel waste input from the input hopper easy to be eaten into the pulverizer, the coarse pulverizer is firstly used for coarse pulverization, and the coarsely pulverized material is then pulverized into specified particle-shaped pulverized pieces with the pulverizer. A single-shaft shredder, in which a primary shredding blade and a pulverizing blade are fixed to one rotating shaft, has fewer drive parts for driving the rotating shaft and has a simple structure, so it is used by many companies for in-factory recycling.

This kind of pulverizer has a general box structure, and a pair of fixed side walls are arranged separately at the opposite position on one side of the box, and a rotating shaft is supported by a bearing (bearing) in the approximate center of each fixed side wall. . A plurality of coarse crushing knives are embedded at predetermined intervals and arranged on the rotating shaft, and a plurality of crushing knives are embedded between the fixed side wall and the coarse crushing knives, and between the coarse crushing knives. A pair of swing side walls that can swing around a swing axis parallel to the rotation axis are arranged at substantially opposing positions on the other side of the housing. The housing is formed by each fixed side wall and each swing side wall.

A fixed knife is fixed on the inner side of one swinging side wall. The fixed knife crushes the waste material of the runner into crushed pieces with a specified particle shape by cooperating with the crushing knife, and makes the waste material of the runner easy to be eaten by the crushing knife by cooperating with the coarse crushing knife. In addition, a scraper blade for raking and discharging the pulverized flakes pulverized by the pulverizing blade is fixed at a predetermined position inside the other swinging side wall.

On the outer side of one of the fixed side walls, a speed reduction device provided with an output shaft fitted to the rotary shaft is attached. An electric motor is provided on the lower side of the reduction gear, and the drive shaft of the electric motor rotates to drive the output shaft and the rotation shaft in a predetermined rotation direction via the drive gear. Both ends of the output shaft are supported by the frame of the reduction gear through bearings.

However, in conventional pulverizers, since the frame of the reduction gear is fixed to the fixed side wall, when pulverizing the object to be processed, when the pulverizing knife and the primary pulverizing knife receive force from the fixed knife, the force is applied to the rotating shaft. In general, the rotating shaft is constrained by the bearing as a fixed point, causing the rotating shaft to deflect, and excessive force is applied to the bearing, so there are problems such as bearing damage and short life.

Therefore, a pulverizer (fine cutting machine) has been proposed: a support shaft provided on a fixed side wall in parallel with the rotation shaft, and a motor capable of moving in the axial direction and the shaft diameter direction of the support shaft have been proposed. The state is nested and fixed on the supporting device of the support plate on the reduction gear, through which the reduction gear is fixed on the fixed side wall, so that the support plate fixed on the reduction gear is centered on the rotation axis Since there is room for swinging in the axial direction of the bearing, excessive force is not applied to the bearing, and damage to the bearing or shortening of the life of the bearing can be prevented (refer to Patent Document 1).

Patent Document 1: JP Unexamined Patent Application Publication No. 2005-329295

However, in the pulverizer of Patent Document 1, in the pulverization process of the object to be processed, the force acting on the pulverizing blade and the coarse pulverizing blade by the fixed blade varies according to the pulverization situation, so the The upper output shaft generates fluctuating torque in the reduction gear, and there is a problem that the support plate fixed to the reduction gear vibrates around the support shaft due to the fluctuating torque.

Therefore, it is adopted to install a bracket in a predetermined position of the metal support of the fixed pulverizer, between the bracket and the support plate, set a shockproof member made of polyurethane rubber, for example, and push the shockproof member with the bracket, by This is a method to prevent the vibration of the reduction gear and the electric motor, etc. However, there are problems in that the installation of the bracket for pushing the anti-vibration part requires space, and the installation space of the pulverizer increases; Therefore, the pressure varies depending on the operator. The urethane rubber deteriorates over time, so even if it can prevent the vibration of the reduction gear and the electric motor in the initial stage, it is easy to generate vibration after a long period of use. These above problems are expected to be resolved.

Contents of the invention

The present invention was made in view of the above situation, and its purpose is to provide an installation space that does not require a bracket, which can reduce the installation space of the device, prevent bearing damage and shorten the life, and can prevent the service life from being affected by a simple structure. A shredder that prevents the vibration of the driving part such as the reduction gear and the electric motor to a limited extent, and the installation method of the driving part.

In the pulverizer related to the first aspect, two fixed side walls are separately arranged at both ends of the horizontally placed rotating shaft, and pass between the fixed knife arranged parallel to the rotating shaft and the rotating knife fixed on the rotating shaft. It is characterized in that it includes: a driving part, arranged on the outside of one side of the fixed side wall, to drive the rotating shaft; a shaft part, on the outside of the one side of the fixed side wall, connected with the rotating shaft The shafts are arranged parallel to each other; the fixing plate is formed with an insertion hole for freely inserting the shaft member, and is arranged between the fixed side wall of the one side and the driving part to fix the driving part; and a shockproof part , is interposed between the shaft member and the inner wall of the insertion hole, and the inner wall of the insertion hole is biased relative to the shaft member in such a way that the inner wall of the insertion hole is separated from the rotation direction of the rotation shaft along the circumference of the rotation shaft. , to prevent the vibration of the driving part.

According to the pulverizer according to the second aspect, in the first aspect, the shaft member has a cylindrical portion having a length longer than the thickness of the fixing plate and a diameter smaller than the diameter of the insertion hole, and A collar portion with a diameter larger than that of the insertion hole is wrapped around one end of the cylindrical portion, and when the cylindrical portion is inserted into the insertion hole and the other end of the cylindrical portion is fixed to the In the state where the side walls are in contact, it is fixed on the fixed side wall on the one side; the anti-vibration component is inserted between the inner wall of the insertion hole and the outer peripheral surface of the cylindrical portion.

The pulverizer related to the third aspect is characterized in that, in the second aspect, a part of the outer peripheral surface of the cylindrical part is formed with a notch surface for increasing the separation dimension from the inner wall of the insertion hole; The anti-vibration component can be installed and disassembled between the notch surface and the inner wall of the socket; when the shaft component is fixed on the fixed side wall, the shaft component is rotated around the axis and the anti-vibration component is mounted on the cylindrical part Between the outer peripheral surface of the notch surface and the inner wall of the socket.

A pulverizer according to a fourth aspect is characterized in that, in the second aspect, the outer peripheral surface on the other end side of the cylindrical portion is formed in a tapered shape whose diameter decreases toward the other end side.

A pulverizer according to a fifth aspect is characterized in that, in any one of the first to fourth aspects, there is a locking portion for locking the anti-vibration member to a part of the inner wall of the insertion hole.

According to a sixth aspect of the pulverizer, in any one of the first to fourth aspects, the anti-vibration member includes a coil spring or a leaf spring.

According to the installation method of the driving part related to the seventh aspect, the driving part is arranged on the outside of the fixed side wall vertically arranged with respect to the axial direction of the rotating shaft and supports the rotating shaft, and the rotating shaft is driven on the fixed side wall, which It is characterized in that: a shaft member is provided on the outer side of the fixed side wall parallel to the rotation shaft; an insertion hole for freely inserting the shaft member is formed, and a fixing plate for fixing the driving part is arranged on the fixed side wall. Between the fixed side wall and the driving part; the inner wall of the insertion hole is biased relative to the shaft member in such a way that the inner wall of the insertion hole is separated from the rotation direction of the rotation shaft along the circumference of the rotation shaft. An anti-vibration member for preventing vibration of the drive unit is inserted between the shaft member and the inner wall of the insertion hole.

In the first aspect and the seventh aspect, the driving unit for driving the rotating shaft is provided outside one fixed side wall, and the shaft member is provided outside the one fixed side wall parallel to the rotating shaft. A fixing plate (torque arm) for fixing the driving part is arranged between the one fixed side wall and the driving part by forming an insertion hole for the free-slip shaft member. The anti-vibration member that prevents vibration of the driving part by biasing the inner wall of the insertion hole along the circumference of the rotation shaft away from the shaft member in a direction opposite to the rotation direction of the rotation shaft is inserted between the shaft member and the insertion hole. between the inner walls of the hole. When the rotary shaft rotates to pulverize the object to be processed, a torque in a direction opposite to the rotation direction of the rotary shaft is generated in the rotary shaft and a drive unit that drives the rotary shaft. Therefore, a torque in a direction opposite to the rotation direction of the rotary shaft acts on the fixed plate on which the drive unit is fixed. The fixed plate is inserted with the shaft component through the socket, so the torque acting on the fixed plate causes the inner wall of the socket of the fixed plate to press against the shaft component. At this time, the pressing surface pressed against the shaft member is the inner wall of the insertion hole along the rotation direction side of the rotating shaft around the rotating shaft.

The load applied to the rotating shaft fluctuates due to changes in the crushing state of the object to be processed. For example, when the load is reduced, the torque in the direction opposite to the rotating direction of the rotating shaft decreases. Therefore, the torque acting on the fixing plate in the direction opposite to the rotation direction of the rotating shaft becomes small, and due to the reaction, the fixing plate acts on the fixing plate in the direction of rotation of the rotating shaft along the circumference of the rotating shaft. Therefore, the inner wall of the insertion hole pressed against the shaft member is abruptly separated in the direction of rotation of the rotation shaft along the circumference of the rotation shaft. The anti-vibration member is biased so that the inner wall of the insertion hole is away from the shaft member along the periphery of the rotating shaft in the opposite direction of the rotation direction of the rotating shaft. Therefore, the force of the anti-vibration member can prevent the fixing plate from moving along the rotating shaft. Move around in the direction of rotation of the axis of rotation. Accordingly, it is possible to maintain a free space for the fixing plate fixed to the drive unit to swing in the axial direction and the radial direction of the rotating shaft, and to prevent vibration of the drive unit. In addition, the influence of the urethane rubber over the years can be eliminated, and the installation space of the bracket is not required, the structure is simplified, and the installation space of the device can be reduced.

In the second aspect, the shaft member has a cylindrical portion whose length is longer than the plate thickness of the fixing plate and whose diameter is smaller than the diameter of the insertion hole, and a cylindrical portion wrapped around one end side of the cylindrical portion and whose diameter is larger than the diameter of the insertion hole. The flange portion is fixed to one fixed side wall in a state where the cylindrical portion is inserted into the insertion hole and the other end side of the cylindrical portion abuts against the fixed side wall. The shockproof member is interposed between the inner wall of the insertion hole and the outer peripheral surface of the cylindrical portion. Since the vibration-proof member is inserted between the inner wall of the insertion hole and the outer peripheral surface of the cylindrical part, for example, the separation dimension between the inner wall of the insertion hole and the outer peripheral surface of the cylindrical part can be kept constant, and a predetermined force can always be applied. , Eliminate the deviation of the pressing force of the operator, and do not need to adjust the pressing force.

In the third aspect, a part of the outer peripheral surface of the cylindrical part is formed with a notch surface that increases the separation dimension from the inner wall of the insertion hole, and the shockproof member can be attached and detached between the notch surface and the inner wall of the insertion hole. When fixing the shaft part to the fixed side wall, insert the anti-vibration part between the notch surface and the inner wall of the socket, rotate the shaft part around the axis, and install the anti-vibration part on the outer peripheral surface of the cylindrical part except the notch surface and the inner wall of the socket between. The separation dimension between the outer peripheral surface except the notch surface and the inner wall of the insertion hole is smaller than the separation dimension between the notch surface and the inner wall of the insertion hole, so that the anti-vibration component can be reliably installed. Accordingly, only the rotating shaft member can be easily attached and detached from the vibration-proof member.

In the fourth aspect, the outer peripheral surface on the other end side of the cylindrical portion is formed in a tapered shape whose diameter decreases toward the other end side. When the shaft member is fixed to the fixed side wall, when the vibration-proof member is inserted between the cylindrical portion and the inner wall of the insertion hole, since the outer peripheral surface of the other end side of the cylindrical portion is tapered, it is easy to insert the shaft member, Attachment of the fixing plate can be easily performed.

In the fifth aspect, the locking part locks the anti-vibration member at a part of the inner wall of the insertion hole. The shape of the locking portion can be appropriately set according to the shape of the anti-vibration member. By providing the locking portion, the anti-vibration member can be reliably attached to a predetermined position.

In the sixth aspect, the anti-vibration member includes a coil spring or a leaf spring. Any other elastic body member may be used as long as it can apply force in a predetermined direction between the shaft member and the fixing plate. Thereby, the change of the booster due to the chronological change can be suppressed to a minimum, and it is not necessary to install the urethane rubber, so that the problem that the vibration is likely to occur when the use period increases due to the influence of the urethane rubber chronological change can be eliminated.

Invention effect

In the first aspect and the seventh aspect, the driving unit for driving the rotating shaft is provided outside one fixed side wall, and the shaft member is provided outside the one fixed side wall parallel to the rotating shaft. An insertion hole in which the shaft member is inserted freely is formed, and a fixing plate for fixing the driving part is disposed between one side of the fixed side wall and the driving part. The anti-vibration member that prevents vibration of the driving part by biasing the inner wall of the insertion hole along the circumference of the rotation shaft away from the shaft member in a direction opposite to the rotation direction of the rotation shaft is inserted between the shaft member and the insertion hole. between the inner walls of the hole. Accordingly, it is possible to maintain a free space for the fixing plate fixed to the drive unit to swing in the axial direction and the radial direction of the rotating shaft, and to prevent vibration of the drive unit. In addition, the influence of the urethane rubber over the years can be eliminated, and the installation space of the bracket is not required, the structure is simplified, and the installation space of the device can be reduced.

In the second aspect, the shaft member has a cylindrical portion whose length is longer than the plate thickness of the fixing plate and whose diameter is smaller than the diameter of the insertion hole, and a cylindrical portion wrapped around one end side of the cylindrical portion and whose diameter is larger than the diameter of the insertion hole. The flange portion is fixed to one fixed side wall in a state where the cylindrical portion is inserted into the insertion hole and the other end side of the cylindrical portion abuts against the fixed side wall. The shockproof member is interposed between the inner wall of the insertion hole and the outer peripheral surface of the cylindrical portion. This makes it possible to always apply a predetermined biasing force, to eliminate variations in the pressing force performed by the operator, and to eliminate the need for adjusting the pressing force.

In the third aspect, a part of the outer peripheral surface of the cylindrical part is formed with a notch surface that increases the separation dimension from the inner wall of the insertion hole, and the shockproof member can be attached and detached between the notch surface and the inner wall of the insertion hole. When fixing the shaft member to the fixed side wall, the shaft member is rotated around the shaft and the vibration-proof member is installed between the outer peripheral surface of the cylindrical portion except for the notched surface and the inner wall of the insertion hole. Accordingly, only the rotating shaft member can be easily attached and detached from the vibration-proof member.

In the fourth aspect, the outer peripheral surface on the other end side of the cylindrical portion is formed in a tapered shape whose diameter decreases toward the other end side. Therefore, the shaft member can be easily inserted, and the fixing plate can be easily attached.

In the fifth aspect, the anti-vibration member can be securely attached to a predetermined position by having an engaging portion for engaging the anti-vibration member on a part of the inner wall of the insertion hole.

In the sixth aspect, the anti-vibration member includes a coil spring or a leaf spring. Thereby, the change of the booster due to the chronological change can be suppressed to a minimum, and it is not necessary to install the urethane rubber, so that the problem that the vibration is likely to occur when the use period increases due to the influence of the urethane rubber chronological change can be eliminated.

Description of drawings

Fig. 1 is a schematic diagram of the main parts of the pulverizer of the present invention viewed from above.

Fig. 2 is a schematic diagram of main parts of the pulverizer of the present invention in side view.

Fig. 3 is a cross-sectional view of main parts showing the state of mounting the shaft member and the fixing plate.

Fig. 4 is an exploded perspective view showing a state in which a shaft member and a fixing plate are attached.

Fig. 5 is an explanatory view showing the state of the fixing plate when the pulverizer is in operation.

Fig. 6 is an explanatory view showing an example using a leaf spring.

Fig. 7 is an explanatory view showing another example using a leaf spring.

Reference symbols:

1 support

2 Fixed side walls

3 Swing side walls

4 coarse shredding knives

5 scrapers

6 Crushing knives

7 fixed knife

11 deceleration device

15 Installation Department

17 shaft parts

17b Notch side

17c Cylindrical part

17d Throat

18 fixed plate

18a jack

18b groove part

18c mounting hole

20 coil spring

22, 23 leaf spring

60 axis of rotation

Detailed ways

Embodiments of the present invention are shown in the accompanying drawings, and the present invention will be described in detail below according to the accompanying drawings. Fig. 1 is a schematic plan view of main parts of the pulverizer of the present invention. In the figure, 1 is a metal support with a central opening. On the upper surface of the support 1, a pair of metal fixed side walls 2, 2 are separately arranged at an appropriate distance, and on both sides of the fixed side walls 2, 2, a pair of Metal swing side walls 3, 3 are composed of fixed side walls 2, 2 and swing side walls 3, 3 to form a shell.

The substantially central portion of the fixed side wall 2 on one side is equipped with a bearing (bearing) 16, and the substantially central portion of the fixed side wall 2 on the other side is equipped with a bearing (bearing) 10, and the rotating shaft described later is connected by two bearings 10,16. The shaft is supported between the fixed side walls 2,2. The reduction gear 11 having an electric motor (not shown) in contact with a bearing 16 is provided. The rotation of the motor shaft of the electric motor is interlocked with the output shaft (not shown) through the gear part provided inside the reduction gear 11, and the output shaft is supported by a pair of bearings (bearings) separately arranged inside the reduction gear 11, At the same time, it is nested with the rotating shaft, and the rotating shaft rotates in a predetermined direction by the rotation of the motor shaft of the electric motor.

A substantially rectangular fixing plate (torque arm) 18 is fixed at least two places on the side of the fixed side wall 2 of the reduction gear 11 by bolts (not shown). An insertion hole 18 a into which the substantially cylindrical shaft member 17 can be freely inserted is formed at a predetermined position of the fixing plate 18 . The lower side of the end of one side of the fixed side wall 2 is provided with a substantially cylindrical mounting portion 15 that is engraved with a female thread on the inside, and the shaft member 17 is inserted in the socket 18a of the fixed plate 18, and the shaft member 17 The other end abuts against the end surface of the mounting portion 15, and a bolt (not shown) is inserted from one end of the shaft member 17 and screwed into the female thread to install the fixed plate 18 on one fixed side wall 2 .

In the space surrounded by the fixed side walls 2, 2 and the swing side walls 3, 3, the coarse crushing knives 4, 4 and the pulverizing knives 6, 6, 6 embedded in the rotating shaft are accommodated. The primary crushing knives 4, 4 are in the shape of an arm with a tip portion (blade portion) bent toward the rotation direction, and are spaced apart by an appropriate length in the axial direction of the rotation shaft. The crushing knives 6, 6, 6 are arranged between the fixed side wall 2 and the coarse crushing knives 4, and between the coarse crushing knives 4, 4, forming annular grooves at regular intervals in the direction of rotation, and adjacent annular grooves The outer peripheral surface of the annular protrusion between the grooves is formed in a zigzag shape.

The swing side walls 3, 3, as described later, can swing around a swing axis parallel to the rotation axis, and when the swing side walls 3, 3 are opened, the casing opens upward. On the inner side of the swing side wall 3 on one side, in a downwardly inclined manner towards the inner side, there is fixed a rectangular box for pulverizing the object to be processed (runner waste) by cooperating with each coarse crushing knife 4 and each pulverizing knife 6. The stationary blade 7 which consists of plate-shaped 1st stationary blade 7a, ..., and the 2nd stationary blade 7b.

The dimension of the longitudinal direction of the 1st fixed blade 7a is approximately the same as the axial dimension of the crushing blade 6, and the edge portion on one side of the long side has a tooth portion formed in a concavo-convex shape to engage with the blade of the crushing blade 6. Bolts 9, ... are fixed on the inner side of the swing side wall 3. In addition, on the short side of the first fixed blade 7a, adjacent to the edge portion of the primary crushing blade 4, there are formed tooth portions for pulverizing the object to be processed by cooperating with the primary crushing blade.

The size of the longitudinal direction of the 2nd fixed knife 7b is approximately the same as the axial dimension of the swinging side wall 3, and the edge portion on one side of the long side is formed with the cooperation with the coarse crushing knife 4 near the coarse crushing knife 4. The teeth that move to crush the object to be processed. The second fixed blade 7b is fixed to the inner side of the swing side wall 3 by bolts (not shown) so as to be in contact with the other edge portion on the long side of the first fixed blades 7a, . . . .

The inner side of the swinging side wall 3 and the lower side of the fixed knife 7 are provided with a coarse crushing knife cover described later in order to prevent the treated objects that are crushed by the coarse crushing blades 4 and 4 but have not been crushed into a specified size from being discharged. . The coarse crushing knife cover is processed with arc-shaped grooves on the inner side to cover the rotation tracks of the coarse crushing knives 4,4.

On the inner side of the other swinging side wall 3, a roughly rectangular plate-shaped scraper 5 is fixed by bolts 8, 8, 8 in a downwardly inclined manner towards the inner side, and the scraper 5 is used to pulverize the blades by the crushing knives 6, 6, 6. The pulverized flakes having a predetermined size (grain shape) are raked and discharged to a discharge port (not shown) on the lower side of the casing.

The scraper 5 is formed with a rectangular notch in the part where the coarse crushing knives 4, 4 rotate, and at the edge of one side of the long side, which is close to the pulverizing knives 6, 6, 6, is formed in a concave-convex shape to engage with the blade of the pulverizing knife 6. rake tribe.

The inner side of the swinging side wall 3 and the lower side of the scraper 5 are provided with a coarse crushing knife cover in order to prevent the treated objects that are not crushed into a predetermined size by the coarse crushing blades 4 and 4 from being discharged. The coarse crushing knife cover is processed with arc-shaped grooves on the inner side to cover the rotation tracks of the coarse crushing knives 4,4. When the swinging sidewalls 3, 3 on both sides are closed, one end of each coarse crushing knife cover abuts against each other to form a space covering the rotation track of the coarse crushing blades 4, 4, preventing un-pulverized processed objects from being discharged.

At the four corners of the housing formed by each fixed side wall 2 and each swing side wall 3, in order to fix the swing side walls 3, 3 on the fixed side walls 2, 2, a tapered locking part 13 is installed on one side. , ..., the ends of the fixed side wall 2 and the swing side wall 3 are clamped by the conical surface, and the screw screw screwed with the locking part 13 is tightened, thereby fixing the swing side walls 3, 3 on the fixed side On the wall 2, 2. Each swing side wall 3 can be opened and closed by gripping the handle 14 fixed on the swing side wall 3 .

The swing side walls 3, 3 are fixed to the fixed side walls 2, 2 by tightening the screw 12 when crushing the object to be processed. Throw in the object to be processed from the input hopper (not shown) provided on the upper part of the casing, and turn on the power supply of the reduction gear 11, the rotating shaft rotates at a predetermined speed, and the coarse crushing knife 4 and the crushing knife 6 also rotate. The direction of rotation is the direction in which the coarse crushing knife 4 and the pulverizing knife 6 engage with the fixed knife 7 from top to bottom, and simultaneously engage with the scraper 5 from bottom to top.

As a result, the object to be processed is first coarsely crushed by the cooperation of the primary crushing blade 4 and the fixed blade 7 , and shredded into a size that can be easily eaten by the crushing blade 6 . The coarsely crushed object to be processed is crushed into pulverized pieces of a specified size by the cooperation of the pulverizing blade 6 and the first fixed blade 7a, and is sent to the lower side of the casing along with the rotation of the pulverizing blade 6, and is discharged from the discharge port (not shown). icon) out. In addition, among the crushed pieces crushed to a predetermined size, those adhered to the side surface of the crushing blade 6 due to static electricity are raked off on the lower surface of the scraper 5 by the cooperation of the crushing blade 6 and the scraper 5, and are discharged from the discharge port (not shown). icon) out.

Fig. 2 is a schematic diagram of main parts of the pulverizer of the present invention in side view. In addition, only essential parts are shown in FIG. 2 . As shown in the figure, a rotating shaft 60 is pivotally supported at substantially the center of the fixed side wall 2 , and the coarse crushing blade 4 and the pulverizing blade 6 are fitted at predetermined positions in the rotating shaft 60 . In addition, although a plurality of coarse crushing blades 4 and crushing blades 6 are fitted, only one is shown in the figure. On the inner side surface of the swing side wall 3 on one side, a fixed knife 7 inclined downward toward the rotation axis 60 is fixed, and the rotation axis 60 rotates in the direction shown by arrow 'A' among the figures.

The speed reducer 11 is installed so that the output shaft (not shown) is fitted to the rotating shaft 60 , and the side surface of the frame of the speed reducer 11 is in contact with the bearing 16 . Bolts (not shown) fix the reduction gear unit 11 and the fixing plate 18 together. In the state where the fixing plate 18 is mounted, an insertion hole 18a is formed at the lower side of the end portion of the fixing plate 18, and a rectangular groove portion 18b (locking portion) is formed in a part of the inner wall of the insertion hole 18a. . The depth direction of the groove portion 18 b is approximately 45 degrees downward with respect to the horizontal direction, and the rotation direction along the rotation shaft 60 is opposite to the rotation direction. The coil spring 20 is installed in the groove part 18b.

The shaft member 17 has a substantially cylindrical shape in which a screw hole 17a is formed, and is fixed to the fixed side wall 2 while being inserted into the insertion hole 18a. The inner diameter of the insertion hole 18a and the outer diameter of the shaft member 17 are set so that a predetermined separation dimension (for example, 1mm, 2mm, etc.) can be ensured when the shaft member 17 is inserted into the insertion hole 18a. A part of the outer peripheral surface of the shaft member 17 is formed with a notch surface 17b (not limited to a flat surface, and may also be a curved surface). Attachment and detachment of the coil spring 20.

In the state where the shaft member 17 is fixed on the fixed side wall 2, the coil spring 20 is installed between the groove portion 18b and the outer peripheral surface of the shaft member 17 except the notch surface 17b so that the inner wall of the insertion hole 18a (the groove The portion 18 b ) is biased in a direction opposite to the rotation direction of the rotation shaft 60 along the periphery of the rotation shaft 60 with respect to the shaft member 17 . By setting the spring constant of the coil spring 20 to an appropriate value, the biasing force can be set to a desired value.

FIG. 3 is a cross-sectional view of main parts showing a mounted state of the shaft member 17 and the fixing plate 18 . As shown in the figure, the shaft member 17 has a cylindrical portion 17c that is longer (for example, about 2mm) than the plate thickness of the fixing plate 18, and has a diameter smaller than that of the insertion hole 18a (for example, about 2mm), and is wrapped in a circle. On one end side of the cylindrical portion 17c, there is a flange portion 17d having a diameter larger than that of the insertion hole 18a. The shaft member 17 is fixed to the fixed side wall 2 with the bolt 21 in a state where the cylindrical portion 17c is inserted into the insertion hole 18a and the other end side of the cylindrical portion 17c is in contact with the mounting portion 15 of the fixed side wall 2 . . Accordingly, it is possible to maintain a free space for the swinging of the fixing plate 18 fixed to the reduction gear 11 in the axial direction and the radial direction of the rotating shaft 60 .

FIG. 4 is an exploded perspective view showing a state when the shaft member 17 and the fixing plate 18 are attached. As shown in the figure, the coil spring 20 is inserted into the groove portion 18b, and the cylindrical portion 17c of the shaft member 17 is inserted into the socket while the notch surface 17b of the cylindrical portion 17c is aligned with the groove portion 18b. In the hole 18a, in a state where the end of the cylindrical portion 17c is in contact with the end surface of the mounting portion 15, the flange portion 17d is clamped by a wrench or the like, the shaft member 17 is rotated by a predetermined angle, and the screw hole 17a is tightened with the bolt 21. . Accordingly, the coil spring 20 has a predetermined urging force, and supports the fixing plate 18 that fixes the reduction gear transmission 11 with respect to the shaft member 17 .

Fig. 5 is a schematic view showing the state of the fixing plate 18 when the pulverizer is in operation. FIG. 5( a ) shows a case where a relatively heavy load is applied while the object to be processed is being pulverized. The rotating shaft 60 rotates in the direction of arrow 'A' in the figure. In this case, a torque opposite to the direction of rotation of the rotating shaft 60 is generated in the reduction gear transmission 11 by the rotating shaft 60 and the output shaft fitted with the rotating shaft 60 . Due to this torque, the fixing plate 18 to which the reduction gear unit 11 is fixed is subjected to a torque in the direction indicated by arrow 'B' in the figure, and the inner wall 18d of the insertion hole 18a of the fixing plate 18 is pressed against the shaft member 17 (cylindrical part 17c). The torque direction shown by the arrow 'B' is not limited to the position of the insertion hole 18a and the shaft member 17, but is perpendicular to the virtual plane formed by connecting the axis of the rotating shaft 60 and the axis of the shaft member 17, and The direction opposite to the rotation direction of the rotation shaft 60 .

In this case, the load acting on the rotating shaft 60 fluctuates due to changes in the crushing state of the processed object. For example, when the load becomes lighter (see FIG. 5(b)), the rotation of the rotating shaft 60 The torque in the opposite direction will decrease. Therefore, the torque acting on the fixed plate 18 in the direction opposite to the rotation direction of the rotating shaft 60 (the torque in the direction of the arrow 'B' in the figure) becomes smaller, and due to its counteraction, the fixed plate 18 is acted on along the rotation direction. around the shaft 60 toward the rotation direction of the rotation shaft 60 (the direction of the arrow 'C' in the figure). Therefore, the inner wall 18d pressed against the insertion hole 18a of the shaft member 17 is abruptly separated in the rotation direction of the rotation shaft 60 along the circumference of the rotation shaft 60 . The coil spring 20 is biased so that the inner wall 18d of the insertion hole 18a of the shaft member 17 moves away from the rotation direction of the rotation shaft 60 along the periphery of the shaft member 17. The fixed plate 18 moves around the rotation axis 60 . Thus, even when a fluctuating torque acts on the reduction gear 11 and the fixing plate 18 due to load fluctuations during pulverization, the force of the coil spring 20 can prevent the reduction gear 11 and the fixing plate 18 from colliding. shock. In this way, not only the reduction gear 11 but also vibrations of the electric motor and the like mounted on the reduction gear 11 can be prevented.

The anti-vibration member for preventing vibration of the reduction gear transmission 11 is not limited to the coil spring 20, and other elastic members may be used. For example, a leaf spring formed into a desired shape can be used.

Fig. 6 is an explanatory diagram of an example using a leaf spring. In this case, no groove portion is provided in the insertion hole 18a. A leaf spring 22 formed in a predetermined shape (for example, a corrugated plate shape) is inserted between the inner wall of the insertion hole 18 a and the outer peripheral surface of the cylindrical portion 17 c of the shaft member 17 . The leaf spring 22 urges the inner wall of the insertion hole 18 a to move away from the inner wall of the shaft member 17 along the periphery of the rotation shaft 60 in the direction opposite to the rotation direction of the rotation shaft 60 . When attaching and detaching the leaf spring 22, as in the above example, the leaf spring 22 is inserted between the notch surface 17b of the shaft member 17 and the gap between the insertion hole 18a, and the shaft member 17 is rotated by a predetermined angle, thereby attaching the leaf spring 22 to the Between the inner wall of the insertion hole 18a and the outer peripheral surface of the cylindrical portion 17c excluding the notched surface 17b. In addition, locking parts (such as convex parts, concave parts, convex parts, etc.) may be formed on the inner wall of the insertion hole 18 a where the leaf spring 22 abuts, so as to limit the movement of the leaf spring 22 .

Fig. 7 is an explanatory view showing another example using a leaf spring. In this case, the notched surface 17 b is not provided on the outer peripheral surface of the shaft member 17 . The shaft member 17 is formed in a tapered shape in which the outer peripheral surface of the end portion of the cylindrical portion 17 c decreases in diameter toward the end portion side. On the inner wall of the insertion hole 18a, there is formed a protrusion that locks the leaf spring 23 formed in a predetermined shape, and the leaf spring 23 is inserted between the inner wall of the insertion hole 18a and the outer peripheral surface of the cylindrical portion 17c of the shaft member 17. . The leaf spring 23 urges the inner wall of the insertion hole 18 a to move away from the inner wall of the shaft member 17 along the periphery of the rotation shaft 60 in the direction opposite to the rotation direction of the rotation shaft 60 . When installing the leaf spring 23, arrange the leaf spring at a predetermined position in the insertion hole 18a, and press the tapered portion of the cylindrical portion 17c of the shaft member 17 into the leaf spring 23, thereby attaching the leaf spring 23 to the insertion hole. Between the inner wall of the hole 18a and the outer peripheral surface of the cylindrical part 17c.

As mentioned above, the present invention can maintain the free space for the fixed plate 18 fixed on the reduction gear 11 to swing in the axial direction and radial direction of the rotating shaft 60 to prevent vibration of the reduction gear 11 . In addition, the influence of the urethane rubber over the years can be eliminated, and the installation space of the bracket is not required, so that the structure is simplified, and the installation space of the device can be reduced at the same time. In addition, it is possible to always apply a predetermined biasing force, to eliminate variations in the pressing force of the operator, and to eliminate the need for adjusting the pressing force. In addition, the coil spring 20 and the leaf springs 22 and 23 can be easily attached and detached simply by rotating the shaft member 17 about the axis. In addition, the shaft member 17 can be easily inserted, and the fixing plate 18 can be easily attached. In addition, the coil spring 20 or the leaf springs 22 and 23 can be reliably attached to predetermined positions. Furthermore, it is possible to minimize the change in the booster caused by the change over time, and it is not necessary to install urethane rubber, so that the problem of vibration easily occurring when the service period increases due to the influence of the change over time of the urethane rubber can be eliminated.

In the above-mentioned embodiment, the example of the pulverizer was described, but the device equipped with the deceleration gear is not limited to the pulverizer, as long as it is an electric device with a structure equipped with the deceleration gear, the vibration of the deceleration gear can be prevented by applying the present invention. . In addition, it is possible to prevent vibration of driving parts such as a drive motor for driving a rotary shaft and a speed reduction gear included in the electric equipment.

In the above embodiment, the shape of the fixing plate (torque arm) is an example and is not limited thereto, and the shape can be changed according to the shape of the device to which the fixing plate is attached or the frame structure of the reduction gear transmission. In addition, the positions of the shaft member and the insertion hole are not limited to the above examples. In this case, although the installation position of the coil spring or leaf spring changes according to the fixed position of the shaft member, in any case, the biasing direction of the coil spring or leaf spring can be set relative to the shaft. The part is such that the inner wall of the insertion hole moves away from the periphery of the rotating shaft in a direction opposite to the direction of rotation of the rotating shaft.

In the embodiment described above, the coil spring or the leaf spring is employed, but the shape and spring constant of the coil spring or the leaf spring can be appropriately set, of course. Furthermore, the anti-vibration member is not limited to a coil spring or a leaf spring, and any member may be used as long as it can apply a biasing force in a predetermined direction at a predetermined position between the shaft member and the inner wall of the insertion hole. For example, disc springs, highly durable synthetic resin spacers, and the like can be used.

The notched surface formed in the cylindrical portion of the shaft member is just an example, and is not limited thereto, and any shape may be adopted as long as the coil spring and the like can be easily attached and detached.

The present invention is not limited to the Examples.

Claims (7)

1. A pulverizer, two fixed side walls are separately arranged at both ends of a horizontally placed rotating shaft, and the fixed knife arranged parallel to the rotating shaft and the rotating knife fixed on the rotating shaft Cooperate to crush the object to be processed, which is characterized by including: The driving part is arranged on the outside of one side of the fixed side wall and drives the rotating shaft; a shaft member disposed parallel to the rotation shaft outside the fixed side wall of the one side; a fixing plate, formed with an insertion hole for freely inserting the shaft member, arranged between the fixed side wall of the one side and the driving part, and fixing the driving part; and The anti-vibration member is interposed between the shaft member and the inner wall of the insertion hole so that the inner wall of the insertion hole is separated from the shaft member in a direction opposite to the rotation direction of the rotation shaft along the circumference of the rotation shaft. force to prevent the vibration of the driving part. 2. The pulverizer according to claim 1, characterized in that, the shaft member, It has a cylindrical part whose length is longer than the plate thickness of the fixing plate and whose diameter is smaller than the diameter of the insertion hole, and a flange that is wrapped around one end side of the cylindrical part and has a diameter larger than the diameter of the insertion hole. department, In a state where the cylindrical part is inserted into the insertion hole and the other end side of the cylindrical part is in contact with the fixed side wall, it is fixed on the fixed side wall of the one side; The anti-vibration member is inserted between the inner wall of the insertion hole and the outer peripheral surface of the cylindrical portion. 3. The pulverizer according to claim 2, characterized in that, A part of the outer peripheral surface of the cylindrical part is formed with a notch surface for increasing the separation dimension from the inner wall of the insertion hole; The anti-vibration component can be assembled and disassembled between the notch surface and the inner wall of the socket; When the shaft member is fixed to the fixed side wall, the shaft member is rotated around the shaft and the anti-vibration member is installed between the outer peripheral surface of the cylindrical portion except for the notched surface and the inner wall of the insertion hole. 4. The pulverizer according to claim 2, characterized in that, The outer peripheral surface on the other end side of the cylindrical portion is formed in a tapered shape that decreases in diameter toward the other end side. 5. The pulverizer according to any one of claims 1 to 4, characterized in that, It has a locking part that locks the anti-vibration component at a part of the inner wall of the insertion hole. 6. The pulverizer according to any one of claims 1 to 4, characterized in that, The anti-vibration member includes a coil spring or a leaf spring. 7. An installation method of a driving part, the driving part is arranged on the outside of a fixed side wall vertically arranged with respect to the axial direction of the rotating shaft and supports the rotating shaft, and the rotating shaft is driven on the fixed side wall, The installation method is characterized in that: a shaft member is provided on the outer side of the fixed side wall parallel to the rotation shaft; An insertion hole for freely inserting the shaft member is formed, and a fixing plate for fixing the driving part is arranged between the fixed side wall and the driving part; The anti-vibration member for preventing the vibration of the driving part by applying force to the shaft member so that the inner wall of the insertion hole is separated from the rotation direction of the rotation shaft along the circumference of the rotation shaft. Inserted between the shaft member and the inner wall of the socket.

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