JP2001030184A - Bearing replacing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bearing replacing device for performing a smooth sampling work and a press-fitting work for a bearing through simple constitution. SOLUTION: A bearing horizontal type sampling auxiliary appliance 3 and a bearing horizontal press-fitting auxiliary appliance 4, having operation axes crossing each other, are formed on a singlemoving track 2. A rotary support auxiliary appliance 5 is rotatably situated at an intersection point part between the operation axes and a bearing body with a bearing is loaded thereon for support. A bearing extracting work and a bearing pressure-fitting work are executed as the direction of a shaft body with a bearing is varied by the rotary support auxiliary appliance 5.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bearing exchange device suitable for removing a bearing from a bearing-equipped shaft used for an escalator speed reducer or for press-fitting a new bearing into the shaft. .

[0002]

2. Description of the Related Art A conventional bearing replacement device is disclosed in
As shown in Japanese Patent Application Publication No. 0-570, a shaft with a bearing and a retirement are installed on a cylindrical work table, and the bearing is removed from the shaft by suppressing the shaft with the hydraulic ram of the recruitment. Was.

[0003]

However, in the conventional bearing exchanging device, only one kind of shaft with a bearing and pull-out can be installed on a cylindrical work table, and the shaft with a bearing having a different shaft diameter. When replacing the body, for example, the input shaft, the intermediate shaft and the output shaft of the speed reducer, it is necessary to prepare three types of cylindrical worktables and employment, and the workability is poor. In addition, when replacing a bearing for a plurality of bearing shafts, such as an input shaft, an intermediate shaft, and an output shaft of a speed reducer, it is necessary to transport the plurality of bearing shafts to a wide area. However, it was extremely difficult to transport each of the three types of cylindrical work platforms, the hiring, and the plurality of shafts with bearings.

[0004] It is an object of the present invention to provide a bearing exchanging apparatus capable of smoothly performing a bearing extracting operation and a press-in operation with a simple configuration.

[0005]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a bearing replacement device for replacing a bearing press-fitted on a shaft with a bearing.
A bearing horizontal disengagement and a bearing horizontal press fit each having a different operation axis are arranged, and at the intersection of these operation axes, a bearing for rotation that is rotatable to face the bearing horizontal discharge and the bearing horizontal press fit, respectively. The rotation support member is provided with a support device for supporting a shaft with a bearing.

In the bearing exchange device according to the present invention, the horizontal bearing and the horizontal press-fitting have different operating axes on the movable carriage, and a rotatable rotary support is provided at the intersection of these operating axes. The structure is simplified because the shaft with bearing is mounted to support it, so that the rotation support can easily change the orientation of the shaft with bearing and remove the horizontal bearing and press-fit the horizontal bearing. The operation of removing and press-fitting the bearing can be performed smoothly.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing an initial state of operation of a bearing replacement device according to an embodiment of the present invention. The bearing exchange device 1 includes a movable carriage 2 having a plurality of wheels on a lower surface and capable of traveling and traveling.
A horizontal bearing 3 and a horizontal press fitting 4 mounted on the bearing, a rotary support 5 disposed at a position facing the horizontal bearing 3 and the horizontal press fitting 4, and a position above the movable trolley 2. The lifting device 6 and the bearing storage table 7 arranged on the movable trolley 2 located below the lifting device 6.

The movable trolley 2 forms a base frame 11 by welding a plurality of steel square pipes in a rectangular shape, and four free wheels 12 are attached to four lower corners of the base frame 11.
On the front side of the upper surface, a portal support 13 formed by welding a plurality of square steel pipes is fixed. Base frame 1
A bearing housing 7 is fixed to the back side of the upper surface of 1, and a plurality of shafts with bearings, for example, an input shaft 8, an intermediate shaft 9, and an output shaft 10 of a speed reducer can be housed separately in the bearing housing 7. A storage section is formed. The horizontal bearing 3 is disposed so as to be orthogonal to the plane forming the portal support 13, and the horizontal bearing 3 supports the first hydraulic ram 14 on the first hydraulic ram support 15, One hydraulic ram support 15 has a plurality of steel rod-shaped connecting members 17 each having one end fixed thereto, and as shown in FIG. Bearing holding body 16 comprising member 16B
Is configured to be supportable.

[0009] The horizontal bearing press-fit 4 is a base frame 1
The second hydraulic ram 1 is attached to the second hydraulic ram support 19 fixed to
8 and a support 21 for supporting the push cylinder 20 as shown in FIG. The push cylinder 20 is
Three types corresponding to the input shaft 8, the intermediate shaft 9, and the output shaft 10 are prepared. The above-mentioned first hydraulic ram 14 of the horizontal bearing presser 3 and the second hydraulic ram 18 of the horizontal bearing presser 4 are operated by a hydraulic pump installed on a floor (not shown). One hydraulic ram 14 and second hydraulic ram 18
May be provided exclusively for each.

The rotary support member 5 has two guide rail grooves 22 extending in the longitudinal direction of the horizontal bearing member 3 on the upper surface of a steel guide rail support member 23 provided on the upper surface of the base frame 11. A flat pedestal 24 slidably fitted along the guide rail groove 22 is arranged.
4, a first semicircular support 25 is rotatably supported, and a second semicircular support 26 is detachably attached to the first semicircular support 25 as shown in FIG. A support device capable of housing and supporting a shaft with a bearing in the first semicircular support 25 and the second semicircular support 26 is provided.

The lifting device 6 has a pair of guide rails 27 extending in the longitudinal direction of the horizontal bearing 3 by connecting one end to the center of the portal support 13 in the width direction. A chain block main body 29 is connected to a lower portion of a roller body 28 that moves on the top 27, and a chain 31 wound around the chain block main body 29 has a hook 31 at a tip end thereof. When the hanging string 32 is hooked on the hook 31 and the operator moves the guide rail body 27 in the longitudinal direction while grasping the hook 31, the roller body 28 and the chain block body 29 move along the guide rail body 27. Make up. Here, the guide rail body 27 fixed to the central portion of the gate-shaped support body 13 has
Extend to a position above and in the vicinity.

As described above, the bearing exchanging device 1 is provided with the rotatable rotary support member 5 on which the bearing-equipped shaft is mounted on one moving carriage 2, and on a different axis line facing the rotary support member 5. Since the bearing horizontal employment 3 and the bearing horizontal employment 4 are respectively arranged at the positions, in other words, the operating axes of the bearing horizontal employment 3 and the bearing horizontal employment 4 are arranged so as to be substantially orthogonal to each other.
Since the rotatable rotary support member 5 for mounting the shaft with bearing is provided at the intersection of these operating axes, it can be applied to various shafts with bearing with a simple configuration.
In addition, the first hydraulic ram support 15 and the second hydraulic ram support 19 are fixed to the periphery of the base frame 11 so as to stand up, and these first hydraulic ram support 15 and second hydraulic ram support 19 are fixed. A first hydraulic ram 14 and a second hydraulic ram 18 which are disposed so as to protrude outside the base frame 11.
Are attached to form the horizontal bearing presser 3 and the horizontal press bearing 4, so that the size of the base frame 11 can be reduced and the whole can be made smaller.

Next, the work of extracting the existing bearing 10A from the output shaft 10 and the work of press-fitting the newly installed bearing 10B in the output shaft 10 using the above-described bearing exchange device 1 will be described. First, the speed reducer in the escalator is divided, and the input shaft 8, the intermediate shaft 9, and the output shaft 10 are taken out.
The input shaft 8, the intermediate shaft 9, and the output shaft 10
Is stored in the bearing storage table 7. After that, the mobile trolley 2 is moved to a wide place suitable for bearing extraction and press-fitting operations.

Next, as shown in FIG. 1, a suspension string 32 is attached to the output shaft 10, and a hook 31 is hooked on the suspension string 32 to perform a preparation operation for lifting the output shaft 10 by the lifting device 6. When this preparation work is completed, as shown in FIG. 2, the chain block main body 29 of the lifting device 6 is operated to wind up the chain 30, the output shaft 10 is lifted, and then the chain block main body 29 is stopped. The lifting height of the output shaft 10 at this time is
Is set to a height that does not collide with the first semicircular support 25 of the rotary support member 5 when it is moved in the longitudinal direction of the base frame 11.

Next, as shown in FIG. 3, while supporting the hook 31, the chain block main body 29 of the lifting device 6 is manually pushed toward the portal support 13 side, and the output shaft 10 is moved to the first semicircular support 25. Move until it is located above. Next, as shown in FIG. 4, the output shaft 10 is gradually lowered by operating the chain block body 29 of the lifting device 6, and the gear portion of the output shaft 10 is fitted to the first semicircular support 25.

Thereafter, as shown in FIG. 5, the string 30 is removed from the output shaft 10 and the chain 30 is rewound, and then the chain block body 29 of the lifting device 6 is moved to the free end side of the guide rail body 27. Move to When the working space is secured above the first semicircular support 25 in this way, as shown in FIG.
6B, the existing bearing 10A is sandwiched between the horseshoe-shaped member 16A and the assembled member 16B, and the rod-shaped connecting member 17 is attached and connected thereto, and the second semicircular support 26 is connected to the first semicircular support 25. The output shaft 10 is fixed inside the supporting device configured as described above.

In this state, when a first hydraulic ram 14 of the horizontal bearing member 3 is operated by operating a hydraulic pump (not shown) installed on the floor, the output shaft 10 is maintained while the existing bearing 10A is held at a predetermined position. Is pressed and moved rearward together with the cradle 24, and the existing bearing 10A is pulled out of the output shaft 10. After that, when the separated existing bearing 10A is removed from the rod-shaped connecting member 17 together with the bearing holding body 16, the state shown in FIG. 7 is obtained.

Next, the first semicircular support 25 of the rotary support member 5
Then, the second semicircular support 26 is rotated 90 degrees so that the axis of the output shaft 10 coincides with the operation axis of the second hydraulic ram 18 as shown in FIG. Thereafter, a new bearing 10B is applied to the end of the output shaft 10 on the side of the second hydraulic ram 18 as shown in the figure, and the push cylinder 20 is mounted between the new bearing 10B and the second hydraulic ram 18. In this state, when the hydraulic pump (not shown) installed on the floor is operated to operate the second hydraulic ram 18 of the bearing horizontal press-fit 4, the new bearing 10 </ b> B is pressed toward the output shaft 10 via the push cylinder 20. Then, it is press-fitted and fixed to the output shaft 10.

Output shaft 1 into which newly installed bearing 10B is press-fitted.
0, the bearing device 7 is returned to the original position by using the lifting device 6, and then, the input shaft 8 and the intermediate shaft 9 are also subjected to the above-described operation procedure to carry out the bearing extracting operation and the press-in operation. it can. If the first semi-circular support 25 and the second semi-circular support 26 do not match the bearing-equipped shaft, the first semi-circular support 25 and the center shaft are maintained at the same height as the output shaft 10. Second semicircular support 26
It is also possible to use an intermediate metal fitting so as to hold and fix an appropriate position, or to prepare a first semicircular support and a second semicircular support that match the shaft body with the bearing. In this manner, the bearing removal and press-fitting operations can be performed by one bearing exchange device 1.

In the above-described bearing exchange operation 1, the bearing horizontal pull-out 3 and the bearing horizontal press-fit 4 are formed on a single moving vehicle 2 with orthogonal operation axes, and at the intersection of these operation axes. Since the rotatable rotary support 5 is provided to mount and support the shaft with the bearing, the configuration is simplified. It is possible to carry out the work of extracting and press-fitting the bearing by the horizontal pull-out 3 and the bearing horizontal press-fit 4. Also, since the overall height is low, it is possible to smoothly carry out the work of removing and press-fitting the bearing even in a place where the ceiling is low, and furthermore, the horizontal bearing 3 and the horizontal press-fitting 4 are mounted on the movable carriage 2. Therefore, the bearing replacement device 1 can be freely moved to an appropriate place as needed.

[0021]

As described above, the bearing exchanging device of the present invention comprises a horizontal carriage and a horizontal press-fit on a single movable carriage, and the movable axes are orthogonal to each other. A rotatable rotating support member is provided at the intersection of the shaft to mount and support the shaft with bearing, so the configuration is simplified. Thus, it is possible to easily carry out the work of extracting and press-fitting the bearing by using the horizontal bearing of the bearing and the press-fitting of the horizontal bearing.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an initial operation state of a bearing replacement device according to an embodiment of the present invention.

FIG. 2 is a perspective view showing a state where an output shaft is lifted by a bearing replacement device shown in FIG. 1;

FIG. 3 is a perspective view showing a state in which the output shaft is moved onto a rotary supporter by the bearing replacement device shown in FIG. 1;

FIG. 4 is a perspective view showing a state in which the output shaft is lowered onto a rotary supporter by the bearing replacement device shown in FIG. 1;

FIG. 5 is a perspective view showing a state where the output shaft is mounted on a supporter by the bearing replacement device shown in FIG. 1;

FIG. 6 is a perspective view showing a state where a bearing is removed by the bearing replacement device shown in FIG. 1;

FIG. 7 is a perspective view showing a state in which bearing removal has been completed by the bearing replacement device shown in FIG. 1;

FIG. 8 is a perspective view showing a bearing press-in operation state by the bearing replacement device shown in FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Bearing exchange apparatus 2 Moving carriage 3 Bearing horizontal employment 4 Bearing horizontal press fitting 5 Rotation support employment 6 Lifting device 7 Bearing storage base 10 Output shaft 10A Existing bearing 10B New bearing 11 Base frame 14 First hydraulic ram 15 First Hydraulic ram support 16 Bearing clamp 18 Second hydraulic ram 19 Second hydraulic ram support 25 First semicircular support 26 Second semicircular support

Claims (3)

[Claims] 1. A bearing exchange device for exchanging a bearing press-fitted on a bearing-equipped shaft, wherein a bearing horizontal retirement and a bearing horizontal press-fitting, each having a different operation axis, are arranged on a movable trolley, and an intersection of these operation axes is provided. A rotating support member rotatable so as to be opposed to the horizontal bearing press and the horizontal press fitting, respectively, and a supporting device for supporting a shaft with a bearing is provided at the rotary support. apparatus. 2. The vehicle according to claim 1, wherein the movable trolley has a plurality of wheels at a lower portion of a base frame, and wherein the horizontal bearing disengagement and the horizontal bearing press-fitting are performed by a first hydraulic system. The first hydraulic ram and the second hydraulic ram are supported on the ram support and the second hydraulic ram support, and the first hydraulic ram support and the second hydraulic ram support are attached to the peripheral portion of the base frame. A bearing replacement device, wherein the bearings are fixed, and the first hydraulic ram and the second hydraulic ram are respectively supported by the first hydraulic ram support and the second hydraulic ram support so as to protrude from the base frame. . 3. The portable storage device according to claim 1, further comprising a bearing housing on which the bearing-equipped shaft is housed, and a portal support on the movable carriage. A bearing exchange device characterized by mounting a lifting device that can be moved substantially at the upper part between supporters.