JP2019088133A - Dust collection hood - Google Patents

Abstract

To provide a dust collection hood which can be appropriately and easily attached/detached to/from an electric motor.SOLUTION: The present invention is a dust collection hood 5 attached to an electric motor 106 for sucking dust removed by blowing air within the electric motor 106 with air from an air exit 111 of the electric motor 106, and has a hood body 10 having a suction port 14 arranged correspondingly to the air exit 111, a connection portion 20 provided on the hood body 10, installing the hood body 10 to the electric motor 106 by connecting to the electric motor 106, and releasing the installed hood body 10 from the electric motor 106 by separating from the electric motor 106, and a holding portion 30 provided on the hood body 10, contacting an external surface of the electric motor 106 by turning to one direction, and separating from the external surface of the electric motor 106 by turning to the other direction.SELECTED DRAWING: Figure 3

Description

  BACKGROUND OF THE INVENTION Field of the Invention The present invention relates to a dust collection hood attached to a motor for sucking dust removed by blowing air into the interior of the motor together with air from the exhaust port of the motor.

  2. Description of the Related Art Conventionally, there is known an air-blowing dust collecting apparatus for air-blowing and removing dust attached to the inside of a motor, and sucking and recovering air containing the removed dust.

  For example, a rotor air hole cleaning mechanism of a vehicle main motor described in Patent Document 1 has an air blowing nozzle provided with a screw of the same size as a bearing box mounting bolt on the side to which an air hose is connected at the time of air blowing cleaning. It is replaced with one of the bearing box mounting bolts. Thereby, it becomes possible to attach an air hose and to send compressed air, and to clean the rotor air hole.

JP 2007-20258 A

  Although dust removed by air-blown cleaning is exhausted from the main motor together with the compressed air, the above-described rotor air-hole cleaning mechanism has not sufficiently considered recovering the dust contained in the air. Also, a suction hose or the like may be attached to the exhaust port of the main motor to collect dust, but since the space around the main motor mounted on the carriage is narrow, the suction hose or the like can be attached to the main motor It was not easy to install properly.

  The present invention provides a dust collection hood that can be properly and easily attached to and detached from an electric motor in order to solve the problems described above.

  In order to achieve the above-mentioned object, the first dust collection hood of the present invention is a dust collection attached to the motor to suck dust removed by blowing air into the interior of the motor together with the air from the exhaust port of the motor. A hood body having a suction port disposed corresponding to the exhaust port, and the hood body provided with the hood body to attach the hood body to the motor by connecting to the motor; A connecting portion for releasing the hood main body from the motor by separation and the hood main body are provided, and rotating in one direction contacts the outer surface of the motor and rotating in the other direction And a holding portion spaced apart from the outer surface of the motor.

  According to the first dust collecting hood of the present invention, the hood main body can be properly attached to the motor by connecting the connecting portion to the motor and bringing the holding portion into contact with the outer surface of the motor. The hood body can be removed from the motor by separating the connection from the motor and separating the holder from the outer surface of the motor. Thus, the dust collection hood can be properly and easily attached to and detached from the motor.

  According to a second dust collection hood of the present invention, in the first dust collection hood of the present invention described above, the holding portion extends outward from the suction port of the hood main body and is opposed by sandwiching the electric motor. It is preferable to include a holding arm of

  According to the second dust collection hood of the present invention, the pair of holding arms sandwich the electric motor so that the dust collection hood can be kept attached to the electric motor. Further, since the pair of holding arms extend outward of the hood body, they can enter a narrow space around the motor, and can sandwich the motor.

  According to a third dust collection hood of the present invention, in the first dust collection hood of the present invention described above, the electric motor is formed in a cylindrical shape, and the holding portion is outward from the suction port of the hood main body It is preferable that the holding | maintenance arm formed in the extended state is included, and the said holding | maintenance arm has a curved shape along the outer peripheral surface of the said electric motor.

  According to the third dust collection hood of the present invention, since the holding arm is curved, the cylindrical electric motor can be held securely. Also, since the holding arm extends outward of the hood body, it can enter a narrow space around the motor.

  According to a fourth dust collection hood of the present invention, in the second or third dust collection hood of the present invention described above, an opening corresponding to the exhaust port is formed in the holding arm, and the holding arm is formed A hollow cover which covers the opening and is in communication with the inside of the hood body is fixed, and an open air inlet for introducing outside air into the inside of the cover is opened at the front end surface of the cover. preferable.

  According to the fourth dust collection hood of the present invention, the dust-containing air which has passed through the opening of the holding arm and flowed into the inside of the cover is merged with the outside air introduced into the inside of the cover from the outside air introduction port It can be flushed to the side. Thereby, since the suction power of dust-containing air improves, dust-containing air can be suctioned efficiently.

  According to a fifth dust collection hood of the present invention, in the fourth dust collection hood of the present invention described above, the hood main body is a discharge port for discharging air including dust taken in from the suction port, and the hood main body A second flow passage through which the air introduced from the opening and the outside air introduction port flows, and a second flow through which the air introduced from the suction port excluding the opening and the outside air introduction port flows A flow path, and a partition plate that divides the flow path, the partition plate being provided at a position offset from the center of the discharge port so as to increase the flow rate of the first flow path compared to the second flow path Is preferred.

  According to the fifth dust collection hood of the present invention, since the first flow path can flow dust-containing air more than the second flow path, the air introduced from the opening and the outside air introduction port can be efficiently It can flow.

  A sixth dust collection hood according to the present invention is the dust collection hood according to any one of the first to fifth according to the present invention, wherein the motor is formed in a cylindrical shape, and the exhaust port is an outer peripheral surface of the motor It is preferable that the edge part which is formed in and which forms the said suction inlet of the said food | hood main body has a curved shape along the outer peripheral surface of the said electric motor.

  According to the sixth dust collection hood of the present invention, since the edge portion of the suction port is curved along the outer peripheral surface of the motor, the edge portion of the suction port can be brought into close contact with the outer peripheral surface of the motor. Thus, the suction port of the hood main body is disposed to face the exhaust port of the motor, so that the dust-containing air flowing out from the exhaust port can be properly guided to the inside of the hood main body, and the leakage of the dust-containing air is suppressed. Can.

  A seventh dust collection hood according to the present invention is the dust collection hood according to any one of the first to the sixth according to the present invention, wherein the connecting portion is connected to one of the centers of the motor and the holding portion is Preferably, the motor contacts the other than the center of the motor.

  According to the seventh dust collection hood of the present invention, it is possible to sandwich the electric motor from both sides across the center of the electric motor by the connection portion and the holding portion. Thereby, the dust collection hood can be securely attached to the motor.

  Further, in order to achieve the above object, the eighth dust collecting hood of the present invention is attached to the motor for sucking dust removed by blowing air into the motor together with the air from the exhaust port of the motor. A dust collection hood, comprising: a hood main body having a suction port arranged corresponding to the exhaust port; and the hood main body, wherein the hood main body is attached to the motor by connecting to the motor; A connecting portion for disengaging the hood body from the electric motor by separating it from the electric motor, and two rails on which wheels rotated by the electric motor roll and which are moved along the rails 1 base, a second base provided on the first base and moving in the installation direction of the first base, connected to the second base and the hood main body, one direction It said hood body into contact with an outer surface of the motor by rotation, and a, and a connection rotation portion for spacing the hood body from the outer surface of the motor by turning in the other direction.

  According to the eighth dust collection hood of the present invention, the hood body can be moved on a plane by the first base and the second base. Further, the hood body can be brought into contact with or separated from the outer surface of the motor by pivoting the hood body by the connection pivoting portion. Thereby, position alignment of the food | hood main body (suction inlet) with respect to the exhaust port of a motor can be performed easily.

  The ninth dust collection hood of the present invention is the eighth dust collection hood of the present invention described above, wherein the second base is restricted in its movement to fix its position relative to the first base. Preferably, a fixing mechanism is provided.

  According to the ninth dust collection hood of the present invention, movement of the hood main body in the installation direction can be restricted by the position fixing mechanism. Thereby, in a state where the hood body is fixed at an arbitrary position in the installation direction, the pivoting operation of the hood body can be stably performed.

  According to the present invention, the dust collection hood can be properly and easily attached to and detached from the electric motor.

BRIEF DESCRIPTION OF THE DRAWINGS It is a perspective view which shows the air blowing dust collector which concerns on 1st Embodiment of this invention, a rail vehicle, etc. FIG. It is a front view showing a part of electric motor concerning a 1st embodiment of the present invention. It is a side view showing a dust collection hood concerning a 1st embodiment of the present invention, an electric motor, etc. It is a front view showing a dust collection hood concerning a 1st embodiment of the present invention, a part of electric motors, etc. It is a side view showing a part of dust collection hood concerning a 1st embodiment of the present invention, an electric motor, etc. It is a side view which shows a part of holding | maintenance part etc. of the dust collection hood which concerns on 1st Embodiment of this invention. It is a side view showing the dust collection hood concerning a 2nd embodiment of the present invention, an electric motor, etc. It is a side view showing a dust collection hood concerning a 2nd embodiment of the present invention, a part of electric motors, etc. It is a side view which shows the holding arm with a cover of the dust collection hood concerning a 2nd embodiment of the present invention. It is a front view which shows the holding arm with a cover of the dust collection hood which concerns on 2nd Embodiment of this invention. It is a perspective view which shows the dust collection hood which concerns on 3rd Embodiment of this invention, a rail vehicle, etc. It is a perspective view which shows the dust collection hood which concerns on 3rd Embodiment of this invention, an electric motor, etc.

  Hereinafter, embodiments of the present invention will be described with reference to the attached drawings. Note that "Fr" shown in each figure indicates "front", "Rr" indicates "rear", "L" indicates "left", "R" indicates "right", and "U" indicates "Up" is shown, "D" is showing "down." Thus, although terms used herein indicate directions or positions for the convenience of description, those terms are not intended to limit the technical scope of the present invention.

First Embodiment
With reference to FIG. 1 to FIG. 6, an air-blown dust collecting apparatus 1 including the dust collecting hood 5 according to the first embodiment will be described. FIG. 1 is a perspective view showing the air blowing and dust collecting device 1 and the railway vehicle 100 and the like. FIG. 2 is a front view showing a part of the motor 106. As shown in FIG. FIG. 3 is a side view showing the dust collection hood 5 and the motor 106 and the like. FIG. 4 is a front view showing a part of the dust collecting hood 5 and the motor 106 and the like. FIG. 5 is a side view showing a part of the dust collecting hood 5 and the motor 106 and the like. FIG. 6 is a side view showing a part of the holding portion 30 and the like of the dust collection hood 5.

  The air blowing and dust collecting apparatus 1 is an apparatus for air blowing and cleaning the inside of the motor 106 mounted on the carriage 102 of the railcar 100. Specifically, the air blowing dust collecting apparatus 1 blows off dust attached to the inner wall surface of the motor 106 and the like by the compressed air fed into the motor 106, and air containing dust exhausted from the inside of the motor 106 to the outside. (Hereafter, it is also called "dust-containing air".) It is recovered while suctioning. As used herein, “air blowing” and like terms refer to the concept of blowing compressed air to blow off dust within the motor 106 and the like.

[Rail train]
First, the railcar 100 to be subjected to the air blowing operation will be described. As shown in FIG. 1, the railcar 100 includes a vehicle body 101 and a truck 102 fixed to the lower floor portion thereof. The truck 102 includes an underframe 103, two axles 104, four wheels 105, and two electric motors 106. The vehicle body 101 is supported on the underframe 103.

  The underframe 103 has an installation frame 103B bridged between a pair of left and right support frames 103A, and is formed in a substantially H-shape when viewed from a plane. The two axles 104 are disposed on the front and rear sides of the underframe 103 with the installation frame 103B interposed therebetween. The two axles 104 are respectively installed between the pair of support frames 103A, and rotatably supported around the axes by the pair of support frames 103A. The wheels 105 are fixed to the left and right ends of the axle 104. The two wheels 105 fixed to the axle 104 rest on the two rails 200 and roll on the two rails 200.

  The two motors 106 are disposed between the construction frame 103B and the two axles 104. The two motors 106 are each formed in a substantially cylindrical shape extending in the left-right direction. Each motor 106 is a motor that converts electric power into rotational force, and includes a stator and a rotor (not shown) inside the housing 110. Each housing 110 is, for example, made of iron and formed in a substantially cylindrical shape extending in the left-right direction. In the first embodiment, as an example, the gap X1 between the motor 106 and the installation frame 103B is set to about 13 mm, and the gap X2 between the motor 106 and the axle 104 is set to about 16 mm (see FIG. 3) .

  On the right side of the front motor 106 and on the left side of the rear motor 106, a joint box 120 containing a joint (not shown) is fixed. That is, the rear motor 106 is provided in a posture in which the front motor 106 is reversed in the left-right direction. An output shaft (not shown) extending from the rotor of each motor 106 is connected to a joint, and the joint is connected to a gear train (not shown) accommodated in the gearbox 130. Each gear train is connected to an axle 104.

  The outputs (rotational forces) of the pair of electric motors 106 are respectively transmitted to the pair of axles 104 via a joint and a gear train. The front motor 106 rotates the front wheel 105 about the axis, and the rear motor 106 rotates the rear wheel 105 about the axis. Thereby, the truck 102 (railroad vehicle 100) can be traveled along the pair of rails 200. Since the two motors 106 have substantially the same structure, the front motor 106 will be described below.

  The electric motor 106 adopts a self-ventilated cooling type which cools a rotor or the like by taking outside air into the inside of the housing 110. On the upper side of the housing 110, an intake duct (not shown) having an intake port for taking in external air is attached. As shown in FIGS. 2 and 3, a plurality of exhaust ports 111 are formed on the lower outer peripheral surface of the housing 110 for discharging the air that has flowed from the intake port and cooled the rotor and the like.

  In detail, the plurality of exhaust ports 111 are opened in a strip-like plate 112 formed in a substantially annular shape along the outer peripheral surface of the housing 110. The plurality of exhaust ports 111 are arranged at predetermined intervals in the circumferential direction on the lower side of the strip plate 112. Each exhaust port 111 is an elongated hole obliquely extending with respect to the width direction of the strip plate 112 (see FIG. 2). Although illustration is omitted, a circumferentially extending opening is formed below the horizontal line passing through the center of the housing 110, and the strip plate 112 is disposed so as to cover the opening by a plurality of bolts B1. It is fixed to the housing 110.

  Further, as shown in FIGS. 1 and 3, an introduction nozzle 113 for introducing compressed air when performing air blowing operation is provided on the left end surface (opposite side of the output shaft (load side)) of the housing 110. It is provided. The introduction nozzle 113 is disposed on the top of the substantially circular end face of the housing 110 when viewed from the side, and protrudes leftward.

[Air blown dust collector]
Next, the air blowing and dust collecting device 1 will be described. As shown in FIG. 1, the air blowing and dust collecting device 1 includes a dust collecting hood 5 and a dust collector 9. The dust collection hood 5 is attached to the motor 106 in order to suck dust removed by blowing air into the interior of the motor 106 together with the air from the exhaust port 111 of the motor 106. The dust collector 9 is a suction source for applying a negative pressure to the inside of the motor 106 via the dust collection hood 5.

<Dust collection hood>
As shown in FIG. 3 and FIG. 4, the dust collection hood 5 includes a hood body 10, a connection portion 20, and a holding portion 30. The hood body 10 is used in a state of being disposed corresponding to the exhaust port 111 of the motor 106. The connection portion 20 and the holding portion 30 are provided on the hood body 10.

(Hood body)
The hood body 10 is formed, for example, in a hollow box shape of a sheet metal. In the upper portion of the hood body 10, a substantially semicircular recess 11 is formed in a recessed state as viewed from the side. The recess 11 is curved so as to have substantially the same diameter as the outer diameter of the motor 106 (housing 110). In the lower part of the hood main body 10, a substantially trapezoidal (funnel-like) convex portion 12 is formed extending downward from the front and rear sides toward the center when viewed from the side. As shown in FIG. 3, a main body opening 10A smaller than the outer shape is formed on the left side surface of the hood main body 10, and the main body opening 10A is closed by a lid 13. The lid 13 is detachably fixed to the hood body 10 by a plurality of mounting screws B2.

  The hood body 10 has a suction port 14 for taking in the dust-containing air therein, and a discharge port 15 for discharging the dust-containing air taken in from the suction port 14. The suction port 14 is a substantially rectangular opening which is formed in the upper end surface of the recess 11 and which is long in the front-rear direction. The suction port 14 is formed along the curve of the recess 11 (see FIG. 1). That is, the edge portion forming the suction port 14 of the hood main body 10 has a curved shape along the outer peripheral surface of the motor 106. The discharge port 15 is a substantially circular opening formed on the lower end surface of the convex portion 12. The upstream end of the duct hose 9A is connected to the discharge port 15 (see FIG. 3).

(Connection part)
As shown in FIGS. 3 to 5, the connection portion 20 includes a pair of attaching and detaching handles 21, a pair of support cylindrical portions 22, and a pair of suction portions 23. The pair of attachment / detachment handles 21, the pair of support cylindrical portions 22 and the pair of suction portions 23 are respectively provided on the front and back sides of the hood main body 10 with the discharge port 15 interposed therebetween (see FIG. 3). In addition, since a pair of attachment or detachment handle 21 grade | etc., Is a structure used as front-back symmetry, the handle 21 grade | etc., Of one (mainly back) attachment or detachment is demonstrated hereafter.

  The detachable handle 21 includes a handle shaft 21A and a handle grip 21B. The handle shaft 21A is formed in a bar shape having a circular cross section. The handle shaft 21A is supported by the hood body 10 in a posture extending along a normal perpendicular to a tangent line passing through the contact point on the recess 11. The upper portion and the middle portion of the handle shaft 21A are disposed inside the hood body 10, and the lower portion of the handle shaft 21A is exposed from the hood body 10 (see FIG. 5). An external thread is formed on the outer peripheral surface of the handle shaft 21A except for a portion exposed from the hood main body 10. The handle grip 21B is fixed to the lower end portion of the handle shaft 21A. The handle grip 21B extends in the radial direction from the handle shaft 21A.

  As shown in FIG. 5, the support cylindrical portion 22 is formed in a substantially cylindrical shape, and a female screw is formed on the inner peripheral surface of the support cylindrical portion 22. The support cylinder portion 22 is disposed inside the hood main body 10 in a posture inclined at the same angle as the handle shaft 21A. The upper end portion of the support cylindrical portion 22 is fixed to the inside of the hood main body 10 via the mounting plate 24. The handle shaft 21A described above is provided in a state of penetrating the support cylindrical portion 22 and the mounting plate 24, and the male screw of the handle shaft 21A is engaged with the female screw of the support cylindrical portion 22. That is, the support cylindrical portion 22 rotatably supports the handle shaft 21A around its axis by screw action. The mounting and demounting handle 21 is adapted to be advanced and retracted in the normal direction (up and down direction) by being rotated forward and reverse around the axis.

  The double nut 25 is tightened on the upper portion of the handle shaft 21A which penetrates the mounting plate 24 with the washer W interposed therebetween. In addition, a bracket 26 is fixed to an upper end portion of the handle shaft 21A which penetrates the double nut 25.

  The adsorption unit 23 includes a magnet holder 27 and a magnet 28 accommodated therein. The magnet holder 27 is disposed on the upper surface of the bracket 26 and attached by a knob bolt B3 screwed in from below. The magnet holder 27 is attached to the bracket 26 with a slight amount of play. The magnet holder 27 is exposed to the outside of the hood body 10 from the suction port 14. The magnet 28 is a permanent magnet having a strong magnetic force such as a neodymium magnet, for example, and is fixed to the inside of the magnet holder 27. The upper end surface of the magnet 28 is disposed on substantially the same plane as the upper end surface of the magnet holder 27.

(Holding part)
As shown in FIGS. 3 to 5, the holding unit 30 includes a pair of holding arms 31, a pair of mounting boxes 32, a pair of coil springs 33, and a pair of operation levers 34. The pair of holding arms 31, the pair of mounting boxes 32, the pair of coil springs 33, and the pair of operation levers 34 are respectively provided on the front and rear sides of the hood body 10. In addition, since a pair of holding arms 31 grade | etc., Are the structures used as front-back symmetry, below, 1 (back) holding arm 31 grade | etc., Is demonstrated.

  As shown in FIGS. 4 and 5, the holding arm 31 is, for example, a plate-like member made of metal and extending in the vertical direction. The holding arm 31 includes a curved plate 31A and a support plate 31B. The curved plate 31A and the support plate 31B are connected to a rotary shaft 31C extending in the left-right direction. The left and right end portions of the rotation shaft 31C are rotatably supported by bearing holes (not shown) of the hood main body 10. That is, the holding arm 31 is provided rotatably about the rotation shaft 31C.

  The curved plate 31A (holding arm 31) is formed to extend upward (outward) from the upper end portion (rotational shaft 31C) of the suction port 14 of the hood main body 10, and is exposed above the hood main body 10. The curved plate 31 </ b> A is curved in an arc shape toward the center of curvature (inside) of the recess 11 of the hood body 10. That is, the curved plate 31A has a shape curved along the outer peripheral surface of the motor 106. A rubber plate 31D is fixed to an inner end (upper inner surface) of the curved plate 31A (see FIG. 5).

  As shown in FIGS. 5 and 6, the support plate 31 </ b> B is formed to extend linearly from the rotation shaft 31 </ b> C toward the inside of the hood body 10. The support plate 31B is formed by welding a metal plate member PL, which is a stack of two sheets.

  As shown in FIG. 6, a spring receiving portion 35, an outer connection hole 36A, and an inner connection hole 36B are formed in the lower portion of the support plate 31B. The spring receiving portion 35 is formed so as to be recessed inward from the outside of the support plate 31B. The outer connection hole 36A opens to the outer plate member PL, and the inner connection hole 36B opens to the inner plate member PL. The inner connection hole 36B is formed larger than the outer connection hole 36A. The outer connection hole 36A and the inner connection hole 36B are formed at positions overlapping with each other below the spring receiving portion 35. The center of the inner connection hole 36B is offset slightly upward from the center of the outer connection hole 36A. A rectangular relief hole 37 is opened in the support plate 31B to prevent interference with the bolt B1 for fixing the strip plate 112 of the motor 106 (see also FIG. 4). The relief hole 37 is formed above the spring receiving portion 35. Further, on the front and rear end surfaces of the hood main body 10, end face openings 16 are formed at positions corresponding to the spring receiving portion 35 and the outer connection hole 36A.

  The mounting box 32 is fixed to the side surface of the hood body 10 so as to cover the end face opening 16. The mounting box 32 includes a first box 40, a second box 41, and a mounting lid 42.

  The first box 40 is fixed to the side surface of the hood body 10, and the second box 41 is fixed to the first box 40. The first spring storage portion 40A corresponding to the spring receiving portion 35 is opened at the upper portion of the first box 40, and the second spring storage portion 41A corresponding to the first spring storage portion 40A is opened at the upper portion of the second box 41. doing. The first and second spring storage portions 40A and 41A have substantially the same opening area as the spring receiving portion 35. A projection passage hole 40B corresponding to the outer connection hole 36A is opened at the lower portion of the first box 40, and a projection storage portion 41B corresponding to the projection passage hole 40B is opened at the lower portion of the second box 41. The protrusion passage hole 40B is formed in a rectangular shape long in the left-right direction (see also FIG. 4). The protrusion storage portion 41B has an opening area sufficiently larger than the protrusion passage hole 40B. The mounting lid 42 is fixed to the outer end surface of the second box 41, and closes the second spring storage portion 41A and the protrusion storage portion 41B. At the lower part of the mounting lid 42, a substantially circular sliding hole 42A is opened coaxially with the protrusion passing hole 40B.

  The coil spring 33 is a so-called compression spring. The outer end portion of the coil spring 33 is accommodated in the first and second spring accommodating portions 40A and 41A of the mounting box 32, and the outer end surface of the coil spring 33 is in contact with the inner surface of the mounting cover 42 of the mounting box 32. The inner end portion of the coil spring 33 is accommodated in the spring receiving portion 35 of the holding arm 31, and the inner end surface of the coil spring 33 is in contact with the inner surface of the spring receiving portion 35. That is, the coil spring 33 is bridged between the mounting box 32 and the holding arm 31. In addition, the coil spring 33 biases the holding arm 31 inward with the mounting lid 42 of the mounting box 32 as a base.

  As shown in FIGS. 4 to 6, the control lever 34 includes a lever shaft 34A and a lever grip 34B.

  The lever shaft 34A is formed in a rod shape having a circular cross section. The lever shaft 34A is inserted into the slide hole 42A, the protrusion storage portion 41B, the protrusion passage hole 40B, the end face opening 16, the outer connection hole 36A and the inner connection hole 36B, and extends substantially horizontally in the longitudinal direction. It is supported by 32 mag (see Figure 6). That is, the lever shaft 34A passes through the mounting box 32, the hood body 10, and the holding arm 31 (support plate 31B). The outer end (rear) of the lever shaft 34A is exposed from the mounting box 32.

  As shown in FIGS. 4 and 6, in the lever shaft 34A, a pair of protrusions 34C extend radially outward so as to be separated from each other. The pair of protrusions 34 </ b> C is disposed inside the mounting box 32. The protrusion storage portion 41B is formed in a size that allows rotation of the pair of protrusions 34C about the axis. In addition, the projection passing hole 40B is formed in a shape and a size that allows passage of the pair of protrusions 34C in the substantially horizontal posture, and restricts passage of the pair of protrusions 34C in the other postures. There is. The slide hole 42A allows the slide of the lever shaft 34A, but is formed in a shape and a size that restricts the passage of the pair of protrusions 34C.

  As shown in FIG. 6, the front end (front end) of the lever shaft 34A penetrates the holding arm 31 (support plate 31B). A substantially annular plate member 43 is fitted to the tip of the lever shaft 34A. The saucer member 43 is formed in such a size that it can pass through the outer connecting hole 36A of the support plate 31B and can not pass through the inner connecting hole 36B. The disc member 43 is disposed inside the outer connection hole 36A, and is attached to the lever shaft 34A by screwing a bolt B4 into a nut N fixed to the front end surface of the lever shaft 34A.

  As shown in FIG. 5, the lever grip 34 </ b> B is fixed to the outer end (rear end) of the lever shaft 34 </ b> A exposed from the mounting box 32. The lever grip 34B extends radially from the lever shaft 34A.

<Dust collector>
Next, the dust collector 9 will be briefly described. As shown in FIG. 1, the dust collector 9 is connected to the dust collecting hood 5 by a duct hose 9A having flexibility (elastic deformation). The dust collector 9 includes a fan for generating a suction force, a filter for removing dust from the dust-containing air, and a dust box for collecting the removed dust (all not shown). Further, the dust collector 9 is provided with an inverter (not shown), and by adjusting this, the suction force by the fan can be changed.

[Air blow work]
Next, the air blowing operation will be described.

  As shown by the alternate long and short dash lines in FIGS. 5 and 6, in the initial state before the air blowing operation is started, the support plate 31B of the holding arm 31 is pushed into the inside of the hood main body 10 by the coil spring 33. For this reason, the curved plate 31A of the holding arm 31 has a posture extending obliquely upward from the rotation shaft 31C toward the outside. That is, the pair of holding arms 31 are pivoted to the “retracted position P1” which is expanded upward from the hood main body 10 (see the dashed line in FIG. 5). In the initial state, the pair of protrusions 34C of the operation lever 34 penetrates the protrusion passage holes 40B of the mounting box 32 and enters the inside of the hood body 10 (see the dashed line in FIG. 6). Further, in the initial state, the double nut 25 abuts against the mounting plate 24 via the washer W, and the detachable handle 21 can not be rotated in the direction of unscrewing.

  Next, an example of the procedure of the air blowing operation will be described. First, the worker arranges the dust collection hood 5 below the exhaust port 111 of the motor 106. The operator lifts the dust collection hood 5 toward the motor 106 and brings the recess 11 of the hood body 10 into close contact with the outer peripheral surface of the housing 110 of the motor 106 (see FIGS. 3 and 4). The hood body 10 is temporarily fixed to the housing 110 by the magnetic attraction force of the two magnets 28 while covering the exhaust port 111 (strip plate 112) of the motor 106. The suction port 14 of the hood body 10 is in a state of being disposed corresponding to the exhaust port 111. In this state, the magnet 28 is slightly separated from the outer peripheral surface of the housing 110 (a gap of about 1 mm). Further, the magnet 28 (the adsorption unit 23) is provided at a position avoiding the bolt B1 for fixing the strip plate 112 of the motor 106.

  Subsequently, the worker grips the handle grip 21B and rotates the handle shaft 21A in the direction of screwing. When the attachment / detachment handle 21 moves upward, the magnet 28 in the magnet holder 27 magnetically attracts in a state of being in contact with the housing 110 (strip-like plate 112) (see FIG. 5). In this state, the hood body 10 is mounted on the motor 106 so as to cover the strip plate 112 (exhaust port 111), and the edge of the suction port 14 opened in the hood body 10 is in close contact with the outer peripheral surface of the motor 106 See Figure 3). The magnet 28 is disposed so as to be attracted to the strip plate 112 at a position avoiding the bolt B1.

  Next, as shown in FIGS. 5 and 6, the operator holds the lever grip 34B and pulls the lever shaft 34A to the outside of the hood body 10 against the biasing force of the coil spring 33. Then, the support plate 31B of the holding arm 31 rotates outward about the rotation shaft 31C while compressing the coil spring 33, and the curved plate 31A of the holding arm 31 rotates inward about the rotation shaft 31C. The pair of holding arms 31 brings the rubber plate 31D into close contact with the outer peripheral surface of the housing 110, and is rotated to the "holding position P2" holding the motor 106 (see the solid line in FIG. 5). That is, the pair of holding arms 31 oppose each other with the electric motor 106 interposed therebetween.

  Further, as shown in FIG. 6, in the process in which the operating lever 34 is pulled and the holding arm 31 pivots from the retracted position P1 to the holding position P2, the lever shaft 34A and the disc member 43 are inside of the inner connection hole 36B. Move relatively from the bottom to the top. In addition, since the inner connection hole 36B is formed larger than the outer connection hole 36A, the lever shaft 34A and the countersink 43 can be smoothly moved without being distorted by the connection holes 36A and 36B. Furthermore, as shown by a solid line in FIG. 6, the pair of protrusions 34C of the lever shaft 34A is disposed in the protrusion storage portion 41B through the end face opening 16 and the protrusion passing hole 40B. The operator pulls the operating lever 34 and rotates it around the axis to place the pair of protrusions 34C in an inclined attitude or a substantially vertical attitude. Here, when the operator releases the lever grip 34B, the holding arm 31 is biased by the coil spring 33 and tries to return to the initial state (retracted position P1). However, since the pair of protrusions 34C interfere with the edge of the protrusion passage hole 40B, the holding arm 31 is fixed at the holding position P2 against the biasing force of the coil spring 33.

  As described above, the connection portion 20 is connected to the lower side (one side) than the center of the motor 106, and the holding portion 30 contacts the upper side (the other side) from the center of the motor 106 (see FIG. 5). Thus, the dust collection hood 5 can be securely attached to the motor 106.

  Next, the worker connects a hose (not shown) extended from a compressed air supply source (such as an air compressor) to the introduction nozzle 113 of the motor 106. Further, the operator blocks the intake port (intake duct) of the motor 106 with a plate or the like so that the compressed air supplied from the introduction nozzle 113 does not leak out. The connection work of the hose to the introduction nozzle 113 and the closing work of the air inlet may be performed before the dust collection hood 5 is attached to the motor 106.

  Subsequently, the operator lifts the carriage 102 using a hydraulic jack or the like to float the wheel 105, and then slowly rotates the motor 106 (about 1 to 2 rpm). Next, the worker operates the dust collector 9 to apply a negative pressure to the inside of the hood body 10 through the duct hose 9A. Then, the operator drives the compressed air supply source and supplies the compressed air from the introduction nozzle 113 to the inside of the motor 106. The supply pressure of compressed air is set to about 5 kPa.

  The compressed air supplied to the inside of the motor 106 blows off the dust attached to the inner circumferential surface of the housing 110, the rotor, and the like. The air containing dust (dust-containing air) flows from the exhaust port 111 of the housing 110 through the suction port 14 into the interior of the hood body 10 (see the arrow in FIG. 5). The dust-containing air flows from the inside of the hood body 10 into the inside of the dust collector 9 through the discharge port 15 and the duct hose 9A. Then, the dust-containing air is separated into dust and air by passing through the filter of the dust collector 9, and the clean air from which dust is removed is exhausted to the outside. The dust separated from the dust-containing air is accumulated in the dust box of the dust collector 9 and collected periodically.

  After the air blowing operation is completed, the compressed air supply source, the motor 106, and the motor 106 are stopped in the reverse procedure to the above. Further, the holding arm 31 is rotated from the holding position P2 to the retracted position P1, and the attaching / detaching handle 21 is turned in the direction of twisting back to pull the magnet 28 away from the motor 106, thereby removing the dust collection hood 5 from the motor 106.

  In the dust collection hood 5 according to the first embodiment described above, the connection unit 20 is connected to the motor 106 by the magnet 28 to attach the hood body 10 to the motor 106 and separate the magnet 28 from the motor 106. The hood body 10 is configured to be released from the motor 106. Further, the holding portion 30 contacts the outer peripheral surface of the motor 106 by rotating inward (one direction), and is separated from the outer peripheral surface of the motor 106 by rotating outward (the other direction). According to this configuration, the hood body 10 can be appropriately attached to the motor 106 by connecting the connecting portion 20 to the motor 106 and bringing the holding portion 30 into contact with the outer peripheral surface of the motor 106. By separating the connecting portion 20 from the motor 106 and separating the holding portion 30 from the outer peripheral surface of the motor 106, the hood body 10 can be removed from the motor 106. Thereby, the dust collection hood 5 can be attached to and detached from the motor 106 appropriately and easily.

  Further, according to the dust collection hood 5 according to the first embodiment, the pair of holding arms 31 sandwich the electric motor 106 so that the dust collection hood 5 can be kept attached to the electric motor 106. Further, since the holding arm 31 (curved plate 31A) is curved, the cylindrical motor 106 can be held securely. Further, since the pair of holding arms 31 are formed in a substantially plate shape and extend upward (outward) of the hood main body 10, they can enter into a narrow space around the motor 106 and sandwich the motor 106. be able to.

  Further, according to the dust collection hood 5 according to the first embodiment, since the edge of the suction port 14 is curved along the outer peripheral surface of the motor 106, the edge of the suction port 14 is the outer peripheral surface of the motor 106. It can be attached closely. As a result, since the suction port 14 of the hood body 10 is disposed to face the exhaust port 111 of the motor 106, the dust-containing air flowing out from the exhaust port 111 can be properly guided to the inside of the hood body 10 Leakage can be suppressed.

  Further, according to the dust collection hood 5 according to the first embodiment, the motor 106 can be sandwiched from both sides (upper and lower) across the center of the motor 106 by the connection portion 20 and the holding portion 30. Thus, the dust collection hood 5 can be securely attached to the motor 106.

Second Embodiment
Next, with reference to FIG. 7, FIG. 8, FIG. 9A and FIG. 9B, the air blowing dust collecting apparatus 2 including the dust collecting hood 6 according to the second embodiment will be described. FIG. 7 is a side view showing the dust collecting hood 6 and the motor 107 and the like. FIG. 8 is a side view showing a part of the dust collecting hood 6 and the motor 107 and the like. FIG. 9A is a side view showing the holding arm 71 with a cover. FIG. 9B is a front view showing the covered holding arm 71. As shown in FIG. In addition, in the following description, about the structure similar to the dust collection hood 5 grade | etc., Which concerns on 1st Embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

<Motor>
First, the motor 107 of the railway vehicle 100 to be subjected to the air blowing operation will be described. Although two motors 107 are mounted on the carriage 102, since the two motors 107 have substantially the same structure, the front motor 107 will be described below. In the second embodiment, as an example, the gap X3 between the motor 107 and the installation frame 103B is set to about 60 mm, and the gap X4 between the motor 107 and the axle 104 is set to about 20 mm (see FIG. 7). .

  As shown in FIG. 7, a strip 114 having a plurality of exhaust ports 111 opened is disposed from the lower end of the housing 110 to both front and rear sides, and is fixed to the housing 110 by a plurality of bolts B1. The strip plate 114 is formed in a substantially semicircular shape, and both ends thereof extend slightly above the horizontal line passing through the center of the housing 110. The exhaust port 111 is formed not only below the strip plate 114 but also on the side surface.

  Further, at the left end surface of the housing 110 (the opposite side of the output shaft (load side)), an introduction nozzle 115 is provided. The introduction nozzle 115 is disposed at the rear (horizontal line passing through the center of the housing 110) of the substantially circular end face of the housing 110 when viewed from the side, and protrudes leftward.

<Dust collection hood>
As shown in FIGS. 7 and 8, the dust collection hood 6 includes a hood main body 50, a connection portion 60, and a holding portion 70.

(Hood body)
The hood body 50 is formed, for example, in the form of a hollow box made of sheet metal. A recess 11 is formed in the upper portion of the hood main body 50, and a substantially trapezoidal (funnel-shaped) convex portion 52 is formed in the rear end portion of the lower portion of the hood main body 50. The suction port 14 is formed on the upper end surface of the recess 11 along the curve of the recess 11. The upstream end portion of the duct hose 9A is connected to the discharge port 15 opened at the lower end surface of the convex portion 52. Further, the upper portions of the front and rear surfaces of the hood main body 50 form slopes which are inclined to approach each other from the lower side to the upper side. An arm opening 53 is formed on the rear slope of the hood body 50.

  By the way, since the introduction nozzle 115 is provided at the rear of the end face of the motor 107, when the air blowing operation is performed, the nozzle 115 is opened at the rear surface of the motor 107 compared to the exhaust port 111 opened at the front and lower surfaces of the motor 107. Much dust-containing air is exhausted from the exhaust port 111 (see the arrow in FIG. 8). Therefore, as shown in FIG. 8, in order to efficiently suck the dust-containing air introduced into the internal space of the hood main body 50, a partition plate 54 for partitioning the internal space in the front-rear direction is provided inside the hood main body 50. It is done. The partition plate 54 is formed of, for example, a sheet metal so as to extend from the rear upper portion of the suction port 14 to the vicinity of the discharge port 15. Specifically, the partition plate 54 includes a first flow passage 55A located on the introduction nozzle 115 side and an inner space of the hood body 50, and a second flow passage 55B located on the opposite side of the introduction nozzle 115, Divided into

  The partition plate 54 includes a guide portion 54A, an inclined portion 54B, and a vertical portion 54C. The guide portion 54A is exposed from the suction port 14 to the outside of the hood main body 50, and is bent so as to avoid the bolt B1 fixing the strip plate 114. The inclined portion 54B extends to the vicinity of the convex portion 52 while being inclined obliquely downward toward the front from the lower end portion of the guide portion 54A. The vertical portion 54C extends substantially vertically downward from the lower end portion of the inclined portion 54B to the vicinity of the discharge port 15. The partition plate 54 is provided at a position shifted from the center of the discharge port 15 so as to increase the flow rate of the first flow passage 55A more than the second flow passage 55B. The partition plate 54 is provided at a position where the cross-sectional area of the first flow passage 55A is larger than the cross-sectional area of the second flow passage 55B in the convex portion 52 (discharge port 15).

(Connection part)
As shown in FIG. 8, the connection portion 60 includes the attachment / detachment handle 21, the support cylindrical portion 22, and the pair of suction portions 23.

  The support cylindrical portion 22 is fixed to a substantially central portion of the lower surface of the hood main body 50 in the front-rear direction, and protrudes downward. The detachable handle 21 (the handle shaft 21A) is supported by the support cylindrical portion 22 in a substantially vertically extending posture (fitted by screw action). The double nut 25 is tightened on the upper portion of the handle shaft 21A penetrating the lower wall of the hood body 50 with the washer W interposed therebetween. Further, a bracket 66 is fixed to the upper end portion of the handle shaft 21A which has penetrated the double nut 25.

  The bracket 66 is formed in a plate shape long in the front-rear direction, and supports the two magnet holders 27 (a pair of suction parts 23). The two magnet holders 27 are each attached to the bracket 66 by a knob bolt B3 (with some play). Two magnets 28 are fixed to the two magnet holders 27.

  As described above, since a large amount of dust-containing air is exhausted from the exhaust port 111 opened on the rear surface of the motor 107 at the time of air blowing operation, the rear holding arm 31 (hereinafter also referred to as "covering holding arm 71"). Has a structure for taking in dusty air.

(Holding part)
As shown in FIGS. 7 and 8, the holding portion 70 includes a holding arm 71 with a cover, a holding arm 31, a pair of mounting boxes 32, a pair of coil springs 33, and a pair of operation levers 34. It is. Although the holding unit 70 is different from the holding unit 30 of the first embodiment in that the pair of coil springs 33 is disposed below the pair of operation levers 34, the basic structure and operation of these are the first. The description is omitted because it is substantially the same as the holding unit 30 of the embodiment. Further, since the holding portion 70 is substantially the same as the holding portion 30 of the first embodiment except for the holding arm 71 with a cover, hereinafter, the holding arm 71 with a cover will be mainly described.

  As shown in FIGS. 8, 9 </ b> A and 9 </ b> B, the covered holding arm 71 includes an arm body 72 and an arm cover 73.

  The arm main body 72 is, for example, a metal plate-like member extending in the vertical direction. Arm body 72 includes a curved plate 72A and a support plate 72B. A pair of rotation bosses 72C project on the side surface of the connection portion between the curved plate 72A and the support plate 72B. The pair of rotation bosses 72 </ b> C is rotatably supported in a bearing hole (not shown) of the hood body 50.

  The curved plate 72A is formed to extend upward (outward) from the arm opening 53 of the hood main body 50. The curved plate 72A is exposed above the hood body 50 and has a curved shape along the outer peripheral surface (strip-shaped plate 114) of the motor 107.

  The support plate 72B obliquely extends along the slope of the arm opening 53 of the hood main body 50 from the lower end portion of the curved plate 72A, and then is bent to extend substantially vertically downward. The support plate 72 </ b> B is formed by welding two stacked metal plate members PL. A spring receiving portion 35, an outer connecting hole 36A, and an inner connecting hole 36B are formed in the lower portion of the support plate 72B.

  An upper opening 74U corresponding to the exhaust port 111 is formed in the curved plate 72A, and a lower opening 74D is formed in the support plate 72B so as to be continuous with the upper opening 74U. The upper opening 74U and the lower opening 74D are a substantially rectangular opening which is long in the vertical direction which is integrated. The lower opening 74D is formed above the connection holes 36A and 36B and on the inclined surface of the support plate 72B. A sealing material (not shown) is fixed to the edge of the upper opening 74U of the curved plate 72A so that the dust-containing air exhausted from the exhaust port 111 does not leak to the outside.

  The arm cover 73 is, for example, a hollow member formed in a substantially rectangular cylindrical shape extending in the vertical direction with a sheet metal. The arm cover 73 is curved with substantially the same curvature as the curved plate 72A, and is provided from the upper end of the curved plate 72A to the lower portion (the bent portion) of the support plate 72B. The arm cover 73 is fixed to the outside of the arm body 72, has a hollow portion that covers the openings 74U and 74D and communicates with the inside of the hood body 50. In the upper end surface (tip end surface) of the arm cover 73, an outside air introduction port 75 for introducing outside air into the arm cover 73 is opened. The lower end portion of the arm cover 73 is accommodated in the arm opening 53 without a gap.

  As shown in FIG. 7, the front holding arm 31 is substantially the same as the holding arm 31 according to the first embodiment, but the rubber plate 31D fixed to the tip end is omitted. A sealing material (not shown) is fixed along the outer shape of the curved plate 31A of the holding arm 31 according to the second embodiment so that the dust-containing air exhausted from the exhaust port 111 does not leak to the outside, Almost the whole of the plate 31A is in close contact with the outer peripheral surface (strip shaped plate 114) of the motor 107.

[Air blow work]
Next, the air blowing operation will be described. The air blowing work using the air blowing dust collecting apparatus 2 is performed in substantially the same procedure as the air blowing work using the air blowing dust collecting apparatus 1 according to the first embodiment. That is, as shown in FIGS. 7 and 8, the operator causes the two magnets 28 of the connection portion 60 to be adsorbed to the motor 107, and the cover holding arm 71 and the holding arm 31 of the holding portion 70 are the hood main body 50. The bearing is pivoted from the retracted position P1 to the holding position P2 about the bearing hole (not shown) of FIG. Then, the dust collection hood 6 is attached to the motor 107. In the process of attaching the dust collection hood 6 to the motor 107, the guide portion 54A of the partition plate 54 comes in contact with the bolt B1 fixing the strip plate 114 so that the dust collection hood 6 with respect to the motor 107 is positioned properly. It is arranged (see FIG. 8).

  Next, the worker connects a hose (not shown) to the introduction nozzle 115 of the motor 107, and closes the inlet of the motor 107 with a plate or the like. The operator slowly rotates the motor 107 with the wheels 105 floating to drive the dust collector 9 and the compressed air supply source. The supply pressure of compressed air is set to about 5 kPa.

  As indicated by thin arrows in FIG. 8, a large amount of dust-containing air exhausted from the exhaust port 111 opened to the rear surface of the motor 107 by the compressed air flows into the arm cover 73 through the upper opening 74U. . At this time, the outside air (see thick arrows in FIG. 8) flowing into the inside of the arm cover 73 from the outside air introduction port 75 by the suction force of the dust collector 9 merges with the dust-containing air that has passed through the upper opening 74U. Here, when the flow velocity of the outside air flowing in from the outside air introduction port 75 is low, there is a possibility that the dust-containing air flows back and leaks from the outside air introduction port 75 and the work environment is polluted. Therefore, in the dust collecting hood 6 according to the second embodiment, the opening area of the outside air introduction port 75 is set to 1368 square millimeters (36 mm × 38 mm), and the flow velocity of the outside air flowing from the outside air introduction port 75 is 15 to 20 m /. It is set in the range of s. The flow velocity of the outside air can be adjusted by the suction force of the dust collector 9.

  The dust-containing air that has joined the outside air inside the arm cover 73 passes through the lower opening 74D and flows into the first flow passage 55A inside the hood main body 50 (see thick arrows in FIG. 8). On the other hand, the dust-containing air exhausted from the exhaust port 111 opened on the front surface and the lower surface of the motor 107 passes through the suction port 14 and flows into the second flow path 55B inside the hood main body 50 (thin in FIG. See arrow). The dust-containing air flowing through the first flow passage 55A and the dust-containing air flowing through the second flow passage 55B join together near the discharge port 15, and flow into the inside of the dust collector 9 through the duct hose 9A. And the dust collector 9 exhausts the clean air which isolate | separated dust from dust-containing air outside.

  According to the dust collection hood 6 according to the second embodiment described above, the dust-containing air that has passed through the upper opening 74U of the cover-equipped holding arm 71 and has flowed into the inside of the cover is transferred from the outside air inlet 75 to the arm cover 73 Can be combined with the outside air introduced to the inside of the and flowed downstream. Thereby, since the suction power of dust-containing air improves, dust-containing air can be suctioned efficiently.

  In addition, in the dust collection hood 6 according to the second embodiment, the partition plate 54 is a first flow path through which the air introduced from the openings 74U and 74D and the outside air introduction port 75 flows in the internal space of the hood main body 50. 55A and the second flow passage 55B through which the air introduced from the suction port 14 excluding the openings 74U and 74D and the outside air introduction port 75 flows. Moreover, in the discharge port 15, the cross-sectional area of the 1st flow path 55A was set larger than the cross-sectional area of the 2nd flow path 55B. Then, the dust-containing air exhausted from the exhaust port 111 opened on the rear surface of the motor 107 on the side of the introduction nozzle 115 passes the first flow passage 55A, and the dust-containing air exhausted from the other exhaust ports 111 is It was decided to pass through the second flow passage 55B. According to this configuration, since the first flow passage 55A can flow more dust-containing air than the second flow passage 55B, a large amount of dust-containing air introduced from the upper opening 74U can be efficiently flowed. it can. Further, since the inclined portion 54B is formed on the partition plate 54, the pressure loss of the dust-containing air flowing in the first flow passage 55A can be reduced.

  In addition, in the dust collection hood 6 which concerns on 2nd Embodiment, although the arm cover 73 was provided in the back holding arm 31 (holding arm 71 with a cover), this invention is not limited to this. The arm cover 73 may be provided on the front holding arm 31 or may be provided on one or both of the pair of holding arms 31 of the dust collection hood 5 according to the first embodiment. Further, the partition plate 54 of the dust collection hood 6 may be provided inside the dust collection hood 5 according to the first embodiment.

Third Embodiment
Next, with reference to FIG. 10A and FIG. 10B, the air blowing dust collection apparatus 3 containing the dust collection hood 7 which concerns on 3rd Embodiment is demonstrated. FIG. 10A is a perspective view showing the dust collecting hood 7 and the railway vehicle 100 and the like. FIG. 10B is a perspective view showing the dust collection hood 7 and the motor 106 and the like.
In addition, in the following description, about the structure similar to the dust collection hoods 5 and 6 grade | etc., Which concern on 1st or 2nd embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

<Dust collection hood>
The dust collection hood 7 includes a hood main body 50, a connection portion 60, a first base 80, a second base 81, and a connection rotation portion 82. The hood body 50 has a suction port 14 disposed corresponding to the exhaust port 111. The connection portion 60 is provided on the hood body 50, and has a function of attaching the hood body 50 to the motor 106 by connecting to the motor 106 and releasing the hood body 50 from the motor 106 by separating it from the motor 106. ing. In addition, in the dust collection hood 7, the holding | maintenance part 70 with which the dust collection hood 6 which concerns on 2nd Embodiment was equipped is abbreviate | omitted.

  The first base 80 is bridged between two rails 200 on which wheels 105 rotated by the electric motor 106 roll. The first base 80 has a function of moving along the rail 200. The first base 80 includes a pair of first sliders 80A slidably engaged along the pair of rails 200, and a pair of shafts 80B bridged between the pair of first sliders 80A.

  The second base 81 is provided on the first base 80 and has a function of moving in the left-right direction (the installation direction of the first base 80). The second base 81 is provided so as to straddle the pair of shafts 80B, and is slidably engaged along the pair of shafts 80B. On the left and right sides of the second base 81, a pair of handles 81A for sliding the second base 81 is provided. In addition, the second base 81 is provided with a position fixing mechanism 83 that restricts the movement thereof and fixes the position with respect to the first base 80. The position fixing mechanism 83 has a structure (not shown) that performs tightening and unclamping of the shaft 80B by reciprocally turning a position fixing lever 83A provided on the second base 81.

  The connecting and rotating portion 82 is connected to the second base 81 and the hood body 50. The connecting and rotating portion 82 includes a fixed plate 82A fixed to the rear of the second base 81, and a rotating plate 82B connected to the tip of the fixed plate 82A via a rotating shaft 82C. The hood main body 50 is fixed to the tip of the pivot plate 82B. The rotating plate 82B is supported by the fixed plate 82A so as to be rotatable in the vertical direction around the rotating shaft 82C. The connection rotation portion 82 (rotation plate 82B) rotates the hood main body 50 into contact with the outer peripheral surface of the motor 106 by rotating upward (in one direction), and rotates the hood main body 50 in the other direction. 50 has a function of separating the motor 50 from the outer peripheral surface of the motor 106.

[Air blow work]
Next, the air blowing operation will be briefly described. In addition, the description about the procedure substantially the same as the air blowing operation using the air blowing dust collectors 1 and 2 which concern on 1st or 2nd embodiment is abbreviate | omitted.

  The operator moves the first base 80 along the rail 200 to adjust the position of the hood body 50 in the front-rear direction with respect to the motor 106. In addition, the operator moves the second base 81 along the shaft 80B, and adjusts the position of the hood main body 50 with respect to the motor 106 in the left-right direction. Then, the operator operates the position fixing lever 83A to fix the position of the hood main body 50 in the left-right direction by the action of the position fixing mechanism 83.

  Next, the operator rotates the rotating plate 82B and the hood main body 50 upward about the rotating shaft 82C, and then causes the two magnets 28 of the connection portion 60 to be attracted to the motor 106. Thereby, the dust collection hood 7 can be attached to the motor 106.

  The subsequent procedure is the same as the air blowing work using the dust collecting hoods 5 and 6 according to the first and second embodiments, and the dust inside the motor 106 is blown off and dust-containing air is collected in the dust collecting hood The air is suctioned and collected by the dust collector 9 through 7. After the air blowing operation is completed, the supply and suction of the compressed air are stopped, the attaching / detaching handle 21 is rotated in the direction to untwist, the magnet 28 is pulled away from the motor 106, and the dust collecting hood 7 is removed from the motor 106.

  According to the dust collection hood 7 according to the third embodiment described above, the hood main body 50 can be moved on a plane by the first base 80 and the second base 81. Further, by rotating the hood main body 50 by the connection rotation portion 82, the hood main body 50 can be brought into contact with or separated from the outer peripheral surface of the motor 106. Thereby, position alignment of hood main part 50 (suction port 14) to exhaust port 111 of electric motor 106 can be performed easily.

  Further, according to the dust collection hood 7 according to the third embodiment, the movement of the hood main body 50 in the installation direction can be restricted by the position fixing mechanism 83. Thereby, in a state where the hood main body 50 is fixed at an arbitrary position in the installation direction, the pivoting operation of the hood main body 50 can be stably performed.

  In the dust collecting hoods 5, 6, and 7 according to the first to third embodiments, the connection portions 20, 60 include the magnet 28, and the magnetic attraction force of the magnet 28 makes the hood main body 10, 50 a motor. Although attached to 106, 107, the present invention is not limited to this. The connection parts 20 and 60 may include, in place of / in addition to the magnet 28, for example, a pad having an adhesive layer capable of repeating sticking and peeling on the outer peripheral surface of the motor 106 or 107. You may include the suction disk which can adsorb | suck with respect to the outer peripheral surface of electric motor 106,107 (all are not shown). In addition, a protrusion (not shown) extending in the radial direction is provided at the tip of the handle shaft 21A, and after the protrusion is inserted into the exhaust port 111 of the motor 106, 107, the handle shaft 21A is rotated about its axis It may be configured to be engaged with the edge of the exhaust port 111. Furthermore, other hooks (not shown) which are radially spread and bent in the radial direction are provided at the tip of the handle shaft 21A, and the hooks are press-fit into the exhaust ports 111 of the motors 106 and 107. It may be configured to be engaged with the edge of the exhaust port 111. Also, in place of the hook portion, a ball may be provided which can be retracted from the surface of the handle shaft 21A. Furthermore, an external hook (not shown) is provided on the outer peripheral surface of the motor 106, 107, and a hooking portion (not shown) hooked on the external hook is provided on the hood body 10, 50 as the connecting portion 20, 60. May be

  In addition, in the dust collecting hoods 5, 6, 7 according to the first to third embodiments, the attachment / detachment handle 21 of the connection portions 20, 60 is configured to rotate around the axis and move back and forth by screw action. The invention is not limited to this. For example, the attachment / detachment handle 21 may be configured to slide linearly, or may be configured to pivot about a certain fulcrum (none of which are shown).

  Further, in the dust collection hoods 5, 6, 7 according to the first to third embodiments, the connection portions 20, 60 (magnets 28) are disposed inside the hood main bodies 10, 50, but the invention is not limited thereto. You may be provided in the outer side of the food | hood main body 10,50.

  In the dust collecting hoods 5 and 6 according to the first and second embodiments, the pair of holding arms 31 (covering holding arms 71) are disposed opposite to each other with the electric motors 106 and 107 interposed therebetween. Is not limited to this. For example, the dust collecting hoods 5 and 6 may have one holding arm 31 (covering holding arm 71) extended so as to cover from the side surface to the top surface of the electric motor 106 or 107 (not shown) ).

  Further, in the dust collecting hoods 5 and 6 according to the first and second embodiments, the support plates 31B and 72B of the holding arm 31 (covering holding arm 71) are formed of two plate members PL, but the present invention Is not limited to this. The support plates 31B and 72B may be formed of a single plate material PL. Further, although the curved plates 31A and 72A of the holding arm 31 (the holding arm 71 with a cover) are formed of a single plate member PL, the invention is not limited thereto, and the curved plates 31A and 72A may be formed of a double plate member PL.

  Further, since the exhaust ports 111 of the motors 106 and 107 are mainly opened to the lower side of the housing 110, the dust collecting hoods 5, 6 and 7 according to the first to third embodiments are under the motors 106 and 107. Although attached to the side, the invention is not limited thereto. If the exhaust port 111 is open on the upper side of the housing 110, the dust collecting hoods 5, 6, 7 are attached to the upper sides of the motors 106, 107. In this case, the connection portions 20 and 60 are connected above the centers of the motors 106 and 107, and the holding portions 30 and 70 are in contact below the centers of the motors 106 and 107. That is, the dust collection hoods 5, 6, 7 may be attached to the motors 106, 107 so as to correspond to the positions of the exhaust ports 111.

  Moreover, although the dust collection hoods 5, 6, 7 according to the first to third embodiments are used for air blowing work of the rail vehicle 100, vehicles targeted for air blowing work are limited to the rail vehicle 100. It is not a thing. For example, it may be used for air blow work of a motor such as an electric car.

  The technique of the present invention can be suitably used for cleaning the interior of a motor such as a railway vehicle.

5, 6 and 7 Dust collection hood 10, 50 Hood main body 15 Discharge port 20, 60 Connection part 30, 70 Holding part 31 Holding arm 54 Partition plate 55A 1st flow path 55B 2nd flow path 71 Covered holding arm 73 Arm cover 74U upper opening (opening)
74D lower opening (opening)
75 outside air introduction port 80 first base 81 second base 82 connection turning portion 83 position fixing mechanism 106, 107 electric motor

Claims (9)

A dust collection hood attached to a motor for sucking dust removed by blowing air into the interior of the motor together with air from the exhaust port of the motor,
A hood body having a suction port disposed corresponding to the exhaust port;
A connecting portion provided on the hood body, for connecting the motor to attach the hood body to the motor, and separating the hood body from the motor to release the hood body from the motor;
And a holding portion provided on the hood body, being in contact with the outer surface of the electric motor by rotating in one direction and separated from the outer surface of the electric motor by rotating in the other direction. Dust collection hood.   The dust collecting hood according to claim 1, wherein the holding portion includes a pair of holding arms which extend outward from the suction port of the hood body and face each other across the electric motor. The motor is formed in a cylindrical shape,
The holding portion includes a holding arm formed to extend outward from the suction port of the hood body,
The dust collecting hood according to claim 1, wherein the holding arm has a curved shape along an outer peripheral surface of the motor. An opening corresponding to the exhaust port is formed in the holding arm,
A hollow cover that covers the opening and is in communication with the inside of the hood body is fixed to the holding arm,
The dust collection hood according to claim 2 or 3, wherein an outside air introduction port for introducing outside air into the inside of the cover is opened on the front end surface of the cover. The hood body is
A discharge port for discharging air including dust taken in from the suction port;
In the internal space of the hood body, the first flow passage through which the air introduced from the opening and the outside air introduction port flows, and the air introduced from the suction port excluding the opening and the outside air introduction port flows A second flow path, and
The collection plate according to claim 4, wherein the partition plate is provided at a position deviated from the center of the discharge port so as to make the flow rate of the first flow passage larger than that of the second flow passage. Dust hood. The motor is formed in a cylindrical shape,
The exhaust port is formed on an outer peripheral surface of the motor.
The dust collection hood according to any one of claims 1 to 5, wherein an edge portion forming the suction port of the hood body has a curved shape along an outer peripheral surface of the electric motor. The connection portion is connected to one side of the center of the motor,
The said holding | maintenance part contacts the other than the center of the said electric motor, The dust collection hood in any one of the Claims 1 thru | or 6 characterized by the above-mentioned. A dust collection hood attached to a motor for sucking dust removed by blowing air into the interior of the motor together with air from the exhaust port of the motor,
A hood body having a suction port disposed corresponding to the exhaust port;
A connecting portion provided on the hood body, for connecting the motor to attach the hood body to the motor, and separating the hood body from the motor to release the hood body from the motor;
A first base installed between two rolling rails and rotated along the rails, and a wheel rotated by the electric motor;
A second base provided on the first base and moving in the installation direction of the first base;
The hood body is connected to the second base and the hood body, and the hood body is brought into contact with the outer surface of the motor by rotating in one direction, and the hood body is rotated from the outer surface of the motor by rotating in the other direction. A dust collection hood, comprising: a connecting rotation part for separating the two.   The dust collecting hood according to claim 8, wherein the second base is provided with a position fixing mechanism which restricts the movement of the second base to fix the position with respect to the first base.

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