JP6354334B2 - Bearing separation equipment - Google Patents

Description

  The present invention relates to a bearing separation facility, and more particularly to a bearing separation facility that separates a bearing externally fitted to a shaft member from the shaft member.

  In order to confirm the maintenance of the bearing and the condition of the bearing after the test, it is necessary to separate the bearing from the shaft member. In particular, it is difficult to manually separate a bearing inserted into a large-diameter shaft member from the shaft member, and a dedicated device is required. As a separating device for separating the bearing from the shaft member, for example, a movable pulling device has been proposed. (See Patent Document 1)

JP 2001-62748 A

  However, the conventional bearing pulling device having the structure shown in Patent Document 1 needs to install the pulling device in a horizontally extending space in the axial direction of the shaft member and bearing assembly. Need. Further, since the drawing device is mobile, the size is limited, it is difficult to pull out a very large bearing with only the drawing pressure, and auxiliary means such as a heating device are required, resulting in a complicated structure. , Difficult to handle.

  Moreover, in the said drawing apparatus, in order to match | combine the assembly of the shaft member and bearing which were set | placed horizontally, and the shaft center of the said drawing apparatus, delicate adjustment is required and work efficiency is bad. Further, in the drawing device, in order to move safely without dropping the extruded shaft member, a holding device that holds the shaft member so as to be movable in the axial direction is necessary, and the structure becomes more complicated. Also difficult to handle.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a bearing separation facility that can be installed in a small space, is safe, and has high work efficiency.

In order to solve the above-mentioned problem, the structural feature of the invention according to claim 1 is that a bearing separation facility for separating the bearing from a shaft member fitted with the bearing by relative movement of the bearing and the shaft member. Because
The shaft member is arranged vertically, a bearing holding member that holds the upper side surface of the bearing, a bearing support member that supports the lower side surface of the bearing, and a lower side of the shaft member, and the shaft member is vertically upward A shaft separating means for pushing up the shaft,
An upper space is provided above the bearing separating device, and the shaft member is held in the upper space, and the shaft latching device is configured to increase the lifting force of the shaft lifting means by winding a wire locked to the shaft member with a motor. It is equipped with a crane as an auxiliary means for lifting the shaft .
The motor is controlled so that the driving force increases when the wire winding speed is less than a preset winding speed .

  According to the structure of this invention, by arrange | positioning the said shaft member perpendicularly, compared with the case where the said shaft member is installed horizontally, installation is possible in a small space. The upper space is formed above the shaft member so that the upper side surface of the bearing is pressed by a bearing pressing member, and the shaft member is moved vertically upward by the shaft lifting means disposed below the shaft member. it can.

  The crane arranged in the upper space can always hold the shaft member during the bearing separation work, can prevent the shaft member from tilting or falling, and can work safely. is there. Furthermore, since the bearing support member that supports the lower side surface of the bearing reliably supports the bearing separated from the shaft member, the bearing can be prevented from dropping, and the bearing and the bearing separation device are damaged due to the fall. Can be prevented.

Further , according to the configuration of the present invention, the crane is a shaft push-up assisting unit that assists a push-up force of the shaft push-up unit by winding a wire locked to the shaft member with a motor, and the motor Is controlled so that the driving force increases when the wire winding speed is less than a preset winding speed. For this reason, since the relative movement between the bearing and the shaft member can be promoted, in the bearing separation operation, the upward movement of the shaft member, that is, the relative movement between the bearing and the shaft member is further reduced. It becomes easy. As a result, the shaft push-up means disposed below the shaft member can be reduced in size, and the bearing separating device can be installed in a smaller space.

  According to the present invention, it is possible to provide a bearing separation facility that can be installed in a small space, is safe, and has high work efficiency.

It is explanatory drawing explaining the structure of the bearing isolation | separation installation of the 1st Embodiment of this invention. It is A arrow directional view of the bearing isolation | separation installation of the 1st Embodiment of this invention shown in FIG. It is B sectional drawing of the bearing isolation | separation installation of the 1st Embodiment of this invention shown in FIG. It is explanatory drawing explaining the structure of the bearing isolation | separation installation of the 2nd Embodiment of this invention. It is a crane control block diagram of the bearing isolation | separation installation of the 2nd Embodiment of this invention shown in FIG.

(First embodiment)
A bearing separation facility according to a first embodiment of the present invention will be described below with reference to the drawings.
FIG. 1 is an explanatory diagram illustrating the configuration of the bearing separation facility 1 according to the first embodiment of the present invention. The bearing separation facility 1 includes a bearing separation device 2 and a crane 3. An upper space 8 is provided above the bearing separation device 2. FIG. 2 is a view of the bearing separation facility 1 according to the first embodiment of the present invention shown in FIG. FIG. 3 is a B sectional view of the bearing separating facility 1 according to the first embodiment of the present invention shown in FIG.

  The bearing separation facility 1 is a facility that separates the bearing 91 from the assembly 90 in which the bearing 91 is externally fitted to the shaft member 92. The shaft member 92 has a bearing press-fit portion 93 in the middle in the axial direction, and a shoulder portion 94 that expands in the radial direction from one end of the bearing press-fit portion 93. A suspension bolt 96 is disposed at one end of the shaft member 92, and the other end surface 95 is a flat surface.

  According to FIGS. 1 and 2, the bearing separating device 2 includes a pedestal portion 21, a bearing pressing member 22, a bearing support member 23, and a hydraulic cylinder 24 as a shaft lifting means.

  The pedestal portion 21 includes a base 41 and a plurality of leg portions 42. The base 41 is a rectangular flat plate made of steel, and has an upper flat surface 43 that is horizontally upward. A cylinder hole 45 that penetrates from the upper flat surface 43 to the lower flat surface 44 is formed in the center. A plurality of cylinder fixing screw holes 46 are formed on a pitch circle centered on the axis of the cylinder hole 45 at the outer side in the radial direction of the cylinder hole 45.

  A plurality of receiving fixing screw holes 47 are formed on a pitch circle having a diameter larger than the pitch circle of the cylinder fixing screw hole 46 with the axis of the cylinder hole 45 as the center. Further, a plurality of presser fixing screw holes 48 are formed on a pitch circle having a larger diameter than the pitch circle of the receiving fixing screw hole 47 around the axis of the cylinder hole 45.

  As shown in FIG. 1, the plurality of leg portions 42 are plate-shaped with an I-shaped cross section made of a steel material, and are arranged radially below the base 41 around the axis of the cylinder hole 45. The lower ends of the plurality of leg portions 42 are fixed to the floor 10 with anchor bolts or the like embedded on the floor 10. As shown in FIG. 3, the upper end is fixed to the base 41 with a fixing means such as a bolt to support the base 41 horizontally on the floor 10.

The bearing pressing member 22 includes a pressing plate 50 and a column part 51.
The holding plate 50 is a disc-shaped ring made of steel and is divided into two on the circumference. The diameter of the inner periphery 53 of the presser plate 50 is slightly larger than the diameter of the shoulder portion 94 of the shaft member 92. Near the outer periphery of the presser plate 50, a plurality of through holes 54 are formed on a pitch circle centered on the axis of the inner periphery 53.

  The column part 51 is formed with a cylindrical part 55 and an upper flange 56 and a lower flange 57 that are expanded radially outward at both ends of the cylindrical part 55 in the axial direction. A plurality of fixing screw holes 58 penetrating in the axial direction are formed in the upper flange 56 at equal intervals so as to face the plurality of through holes 54 on the same pitch circle as the plurality of through holes 54 of the holding plate 50. A plurality of bolt holes 59 penetrating in the axial direction are formed in the lower flange 57 so as to face the plurality of presser fixing screw holes 48 on the same pitch circle as the presser fixing screw holes 48 of the base 41.

  The bearing support member 23 is a ring made of a steel material, and includes a cylindrical portion 61, an end portion on one axial direction of the cylindrical portion 61, a receiving flange 62 that is radially reduced in diameter, and an end portion on the other axial direction side. A fixed flange 63 is formed which expands radially outward. The diameter of the inner periphery 64 of the receiving flange 62 is slightly larger than the diameter of the bearing press-fit portion 93 of the shaft member 92. A plurality of receiving fixing bolt holes 65 penetrating in the axial direction are formed at equal intervals on the fixing flange 63 so as to face the receiving fixing screw holes 47 on the same pitch circle as the receiving fixing screw holes 47 of the base 41. .

  Here, the height of the bearing support member 23 is slightly smaller than the value obtained by subtracting the axial width of the bearing 91 fitted on the shaft member 92 from the height of the column portion 51 of the bearing pressing member 22. Is formed.

  The hydraulic cylinder 24 has a cylinder body 71 and a rod 72, and a flange 73 is formed at the end of the cylinder body 71 on the rod 72 side. The rod 72 has a disk portion that expands at the tip, and the end surface of the disk portion is a flat tip surface 74. A cylinder bolt hole 75 is formed in the flange 73 so as to face the plurality of cylinder fixing screw holes 46 on the same pitch circle as the plurality of cylinder fixing screw holes 46 of the base 41.

  The hydraulic cylinder 24 is inserted into the cylinder hole 45 of the base 41 with the rod 72 facing vertically upward, and is disposed vertically on the base 41 with the flange 73 in contact with the upper plane 43 of the base 41. Here, the hydraulic cylinder 24 is fixed to the base 41 by screwing bolts that pass through the plurality of cylinder bolt holes 74 of the flange 73 into the cylinder fixing screw holes 46 of the base 41. The hydraulic cylinder 24 is supplied with hydraulic pressure for pushing up the rod 72 from a hydraulic pressure generator (not shown).

  The bearing support member 23 has a receiving flange 62 on the upper side, a fixing flange 63 on the lower side, and an axis is vertically arranged on the base 41, and a plurality of bolts through which the receiving fixing bolt holes 65 of the fixing flange 63 are inserted. Is fixed to the base 41 by being screwed into the plurality of presser fixing screw holes 47 of the base 41.

  The columnar portion 51 of the bearing retainer member 22 is arranged on the base 30 with the upper flange 56 on the upper side and the lower flange 57 on the lower side, and the axis is vertically arranged on the base 30, and a plurality of bolt holes 59 of the lower flange 57 are inserted. These bolts are fixed to the base 41 by screwing into the presser fixing screw holes 48 of the base 41.

Hereinafter, the operation and effect of the bearing separation facility 1 of the first embodiment will be described.
A suspension bolt 94 is disposed on the one end surface 93 of the shaft member 92, and the hook 32 at the tip of the wire 31 of the crane 3 is engaged with the suspension bolt 94. The crane 3 winds and unwinds the wire 31 by the motor 33 and moves the assembly 90 in the vertical direction. Further, the moving unit 34 moves the assembly 90 in the horizontal direction.

First, the crane 90 moves the assembly 90 of the bearing 91 and the shaft member 92 to the upper space 8 of the bearing separating device 2.
In this state, the presser plate 50 is not attached to the bearing separating device 2.
The assembly 90 disposed in the upper space 8 of the bearing separation device 2 by the crane 3 is moved downward by the crane 3, and the shaft member 92 passes through the inner periphery 63 of the bearing support member 23, so that the lower side of the bearing 91. The side surface 97 comes into contact with the upper surface 66 of the upper flange 62 of the bearing support member 23 and stops in a vertical posture.

  Next, the presser plates 50 divided into two are temporarily placed on the column portions 51 of the bearing retainer member 22, respectively, and radially inwardly from the outer side in the radial direction above the upper side surface 98 of the bearing 91. The inner periphery 53 of the presser plate 50 is opposed to the shoulder portion 94 of the shaft member 92. In this state, the plurality of bolts inserted through the plurality of through holes 54 of the presser plate 50 are screwed into the plurality of presser fixing screw holes 58 formed in the upper flange 56 of the column part 51, so that the presser plate 50 is It is fixed to the part 51.

  From this state, hydraulic pressure is supplied to the hydraulic cylinder 24 from a hydraulic generator (not shown), the rod 72 of the hydraulic cylinder 24 rises vertically upward, and the tip surface 74 of the lot 72 is below the shaft member 92 of the assembly 90. Next, the upper side surface 98 of the bearing 91 of the assembly 90 is in contact with the lower side surface 52 of the presser plate 50. The assembly 90 further moves up, but the movement of the bearing 91 fitted around the shaft member 92 is restrained by the presser plate 50, so that the shaft member 92 and the bearing 91 move relative to each other in the axial direction. The shaft member 92 and the bearing 91 are separated.

Further, during the bearing separation operation, the wire 31 of the crane 3 is wound up while always checking for no slack.
The bearing 91 separated from the shaft member 92 falls until the lower side surface 97 comes into contact with the upper surface 66 of the upper flange 62 of the bearing support member 23 disposed below the bearing 91. However, the fall distance is a slight value obtained by subtracting the axial width of the bearing 91 from the difference between the height of the column portion 51 of the bearing pressing member 22 and the height of the bearing support member 23 described above.

As described above, the bearing separation facility 1 can perform the bearing separation work only in the space occupied by the bearing separation device 2, and can be installed in a small space compared to other bearing separation methods.
Further, the assembly 90 and the shaft member 92 are always held by the crane 3 disposed in the upper space 8 during the separation work of the bearing 91, and the inclination of the assembly 90 and the shaft member 92 and the overturning of the shaft 90 are caused. The bearing 91 can be safely separated. Furthermore, since the bearing support member 60 that supports the lower side surface 97 of the bearing 91 reliably supports the bearing 91 separated from the shaft member 92, the bearing 91 and the bearing separating device can be prevented from dropping. 2 damage can be prevented.

(Second Embodiment)
A bearing separation facility 100 according to a second embodiment of the present invention will be described with reference to the drawings.
FIG. 4 is a sectional view of the bearing separation facility 100 according to the second embodiment of the present invention.
FIG. 5 is a control block diagram of the crane 130 according to the second embodiment of the present invention.

The bearing separation facility 100 of the second embodiment is different from the bearing separation facility 1 of the first embodiment only in the crane 130, and the other is common to the bearing separation facility 1 of the first embodiment.
In the bearing separation facility 100 of the second embodiment, the description of the shape, configuration, and effects common to the bearing separation facility 1 of the first embodiment is omitted, and the bearing separation facility 1 of the first embodiment is omitted. Only the configuration and operational effects different from the above will be described. Moreover, about the component common with the bearing separation equipment 1 of 1st Embodiment, the same code | symbol is attached | subjected and description is abbreviate | omitted.

  As shown in FIG. 4, the bearing separation facility 100 according to the second embodiment of the present invention includes a bearing separation device 2, an upper space 8 above the bearing separation device 2, and a crane 130. The crane 130 has a control mechanism 36 shown in the control block diagram of FIG. 5 for controlling the winding speed of the wire 131. In FIG. 5, the motor 133 includes an encoder and a driving device, and rotational position information output from the encoder is input to the CPU 137.

  The CPU 137 has a speed calculation circuit, a speed setting circuit, and a comparison circuit. The rotational position information is input to the speed calculation circuit, and the wire winding speed is calculated based on the built-in time information and equipment information. An appropriate set winding speed is input in advance to the speed setting circuit. The wire winding speed and the set winding speed are input to the comparison circuit, the deviation of the driving force is calculated, and sent to the driving device of the motor 133 as a control signal.

Hereinafter, the operation and effect of the bearing separation facility 1 of the second embodiment will be described.
A suspension bolt 96 is disposed at the one end of the shaft member 92, and a hook 132 at the tip of the wire 131 of the crane 130 is engaged with the suspension bolt 96. The crane 130 winds and unwinds the wire 131 by the motor 133 and moves the assembly 90 in the vertical direction. Further, the moving unit 134 moves the assembly 90 in the horizontal direction.

First, the assembly 90 of the bearing 91 and the shaft member 92 is moved to the upper space 8 of the bearing separation device 2 by the crane 130.
In this state, the presser plate 50 is not attached to the bearing separating device 2.
The assembly 90 disposed in the upper space 8 of the bearing separation device 2 by the crane 130 is moved downward by the crane 130, and the shaft member 92 passes through the inner periphery 63 of the bearing support member 23, so that the lower side of the bearing 91. The side surface 97 comes into contact with the upper surface 66 of the upper flange 62 of the bearing support member 23 and stops in a vertical state.

  Next, each of the two divided presser plates 50 is temporarily placed on the column portion 51 of the bearing retainer member 22 and radially inwardly above the upper side surface 98 of the bearing 91 from both radially outer sides. The inner periphery 53 of the presser plate 50 is opposed to the shoulder portion 94 of the shaft member 92. In this state, the plurality of bolts inserted through the plurality of through holes 54 of the presser plate 50 are screwed into the plurality of presser fixing screw holes 58 formed in the upper flange 56 of the column part 51, so that the presser plate 50 is It is fixed to the part 51.

  From this state, a hydraulic pressure equal to or lower than the hydraulic pressure set by the release valve is supplied to the hydraulic cylinder 24 from a hydraulic pressure generator (not shown), and the rod 72 of the hydraulic cylinder 24 starts to rise. At the same time as the hydraulic pressure is supplied to the hydraulic cylinder 24, the motor 133 starts winding the crane 130 with the wire 131.

  When the rod 72 is raised, the tip end surface 74 of the rod 72 comes into contact with the lower end surface 95 of the shaft member 92 of the assembly 90, and the shaft member 92 is pushed up so that the upper side surface 98 of the bearing 91 of the assembly 90 is It contacts the lower surface 52 of the presser plate 50. Although the assembly 90 further moves up, the movement of the bearing 91 fitted on the shaft member 92 is restrained by the presser plate 50, so that the shaft member 92 and the bearing 91 relatively move in the axial direction.

  In the above-described bearing separation work, the crane 130 is controlled by the control mechanism 136 based on the control block diagram shown in FIG. That is, based on the time information and the position information output from the encoder synchronized with the rotation of the motor, the winding speed of the wire 131 is calculated and the driving for correcting the difference between the preset winding speed of the wire 131 is performed. The force deviation is calculated by the comparison circuit and fed back to the driving device of the motor 133.

  When the winding speed of the wire 131 is less than the set winding speed, the driving force of the motor 133 is increased by the control mechanism 136 and the pushing force of the hydraulic cylinder 24 is assisted to push the shaft member 92 upward. Raising, that is, promoting relative movement between the bearing 91 and the shaft member 92 is facilitated. Finally, when the shaft member 92 and the bearing 91 are separated and the rod 72 reaches a predetermined stroke, the movement of the rod 72 stops and the winding of the wire 131 stops.

  As described above, the crane 130 disposed in the upper space 8 serves as a shaft pushing-up assisting unit that assists the pushing-up force of the shaft member 92 upward, that is, the pushing force of the hydraulic cylinder 24. As a result, the hydraulic cylinder 24 disposed below the shaft member 92 can be downsized, and the bearing separating device 2 can be installed in a smaller space.

  In the above-described embodiment, the shaft lifting means is the hydraulic cylinder 24. However, in other embodiments of the present invention, the shaft lifting means may be other means such as a screw type.

  The present invention is not limited to such embodiments, and can naturally be implemented in various modes without departing from the gist of the present invention.

DESCRIPTION OF SYMBOLS 1,101 ... Bearing separation equipment 2 ... Bearing separation apparatus 22 ... Bearing holding member 23 ... Bearing support member 24 ... Hydraulic cylinder (shaft lifting means)
3, 103 ... Crane (shaft push-up assisting means)
8 ... Upper space 91 ... Bearing 92 ... Shaft member 97 ... Lower side face 98 ... Upper side face

Claims (1)

A bearing separation facility that separates the bearing from a shaft member with which the bearing is fitted by relative movement of the bearing and the shaft member,
The shaft member is arranged vertically, a bearing holding member that holds the upper side surface of the bearing, a bearing support member that supports the lower side surface of the bearing, and a lower side of the shaft member, and the shaft member is vertically upward A shaft separating means for pushing up the shaft,
An upper space is provided above the bearing separating device, and the shaft member is held in the upper space, and the shaft latching device is configured to increase the lifting force of the shaft lifting means by winding a wire locked to the shaft member with a motor. It is equipped with a crane as an auxiliary means for lifting the shaft .
The motor is controlled so that the driving force increases when the winding speed of the wire is less than a preset winding speed .

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