JPH0572368U - Two-piece crankshaft support device - Google Patents

Abstract

(57) [Abstract] [Purpose] Two pieces of crankshaft 1 1a,
1b is assembled or separated by aligning the left and right crankpin shafts. [Structure] Piece 1a of crankshaft 1 divided into two,
One piece 1a of 1b is supported on the stands 5, 5 ... Which are arranged on one side of the horizontal stand 10, and the top plate 12 is slid in the axial direction of the crankshaft 1 on the other side of the horizontal stand 10. , Which are provided for supporting the other piece 1b of the crankshaft 1, and are arranged on the base 13,
A pair of support rollers 16, 16 and a bearing base 18, 18 are provided on the upper surfaces of these bases 13, 13 ...
Is provided to move back and forth by the pair of support rollers 16,
The other piece 1b of the crankshaft 1 is placed between 16 and the support rollers 16, 1 are mounted on the bearing bases 18, 18.
Clamp screws 27, 27 for fixing 6 are provided.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a support device for a two-piece crank shaft for inspecting, assembling, and separating a two-piece crankshaft consisting of two large pieces such as a large punching machine (press), a ship, and a generator.

[0002]

[Prior Art]

 As shown in FIG. 8, a crankshaft of the large-sized punching machine, for example, a large-sized crankshaft 1 having a length of 3200 mm, a journal diameter of 250 mm, and an eccentric length of 165 mm has a recessed portion 3 which is fitted in the center with an intermediate gear 2 interposed therebetween. , 2 pieces 1 a and 1 b each having a convex portion 4 and one piece 1 a is supported on a fixed base 5, 5 ... For inspection and assembly thereof, and the other piece 1 b is opposed to it. They are supported so as to be slidable in the axial direction, and they are brought into contact with each other and flanges 8 and 9 at their ends are connected by bolts 6 and knock pins 7.

[0003]

[Problems to be solved by the device]

 Thus, conventionally, the crankshaft 1 is generally received by the V groove 31 of the V block 30 shown in FIG. 9, but this is a difficult work because the friction coefficient is large even when rotated. Also, the contact surface was often scratched. Also, assembling the crankshaft separated into these two pieces with a conventional tool was problematic in terms of construction period, manpower, and safety.

[0004]

[Means for Solving the Problems]

 The present invention has been made to solve the above problems. One of the two pieces 1a and 1b of the crankshaft 1 which is divided into two is placed on one side of the horizontal base 10, and the base 5,5. ..A base 13 for supporting the top plate 12 on the other side of the horizontal base 10 so as to slide in the axial direction of the crankshaft 1, and supporting the other piece 1b of the crankshaft 1 thereon. , 13 ... are arranged, and a pair of support rollers 16 and 16 and bearing bases 18 and 18 are provided on the upper surfaces of these bases 13 and 13 so as to move back and forth by adjusting screws 23 and 23. The other piece 1b of the crankshaft 1 is placed between the pair of support rollers 16 and 16, and the bearing bases 18 and 18 are provided with clamp screws 27 and 27 for fixing the support rollers 16 and 16.

[0005]

[Action]

 Place the journals of the left and right pieces 1a and 1b of the crankshaft 1 between the pair of support rollers 16 and 16 on the table 5 and the table 13, and rotate each piece 1a and 1b of the crankshaft 1 by hand. The shaft heights H of the crankpins 1c of 1a and 1b are the same, and the phase angles of the pieces 1a and 1b are the same. Thus, when the crank positions are aligned at the same angle on the left and right, the support rollers 16 and 16 are fixed by the clamp screws 27 and 27 so as not to rotate, and then the top plate 12 is slid to move the right crank shaft piece 1b. Dock the intermediate gear 2 and the left crankshaft piece 1a to connect the pieces 1a and 1b.

[0006]

【Example】

 As shown in FIGS. 1 and 2, on the left side of a horizontal base 10 for receiving the apparatus as a whole, stands 5, 5 ... For supporting the piece 1a of the crankshaft 1 are arranged at appropriate intervals. H is the axial height of the crank pin 1c.

As shown in FIG. 2, a rail 11 extending in the axial direction of the crankshaft 1 is laid on the right side of the horizontal base 10, and a top plate 12 is provided thereon so as to slide in the axial direction of the crankshaft 1. .. On the top plate 12, there are provided stands 13, 13 ... For supporting the other piece 1b of the crankshaft 1 at appropriate intervals.

A pair of guides 14 and 15 are provided on both sides of the upper surfaces of the bases 13, 13 ..., A pair of bearing bases in which a support roller 16 is pivotally supported by a shaft 17 between the guides 14 and 15. 18 and 18 are fitted so as to move back and forth. Further, elongated holes 20 and 20 for fitting a pair of pins 19 and 19 planted on the upper surfaces of the bases 13 and 13 are provided on both sides of the bearing bases 18 and 18 in the front-rear direction. Rollers similar to the support rollers 16 and 16 are provided on the table 5.

Screw holes 21, 21 extending in the front-rear direction are provided at the center of the lower part of the bearing bases 18, and the support holes 22, 22 provided before and after the planting surfaces of the bases 13, 13, ... The adjusting screws 23, 23 screwed to the 1, 21 are fitted to rotate, and the adjusting screws 23, 23 are attached to the inner surfaces of the turning knobs 24, 24 protruding forward and backward and the supporting bank 22, 22, respectively. The adjusting screws 23, 23 are provided so that the adjusting screws 23, 23 do not move back and forth by providing the flanges 25, 25 in contact with each other.

Clamping screws 27, 27 are engaged with the bearings 26, 26 provided on the front and rear surfaces of the bearing pedestals 18, 18 to engage with and fix the peripheral surfaces of the support rollers 16, 16. ..

Next, the operation of this device will be described. The work of assembling and connecting the intermediate gear 2 to the center of the split pieces 1a and 1b of the crankshaft 1 is as follows. (1) A dummy shaft (a shaft having the same diameter as the journal diameter of the crankshaft 1 or an arbitrary diameter) is placed between the pair of support rollers 16 and 16. (2) Rotate the screws 23, 23 by the front and rear knobs 24, 24 to move the front and rear bearing bases 18, 18 back and forth to adjust the support rollers 16, 16 so that the dummy shafts have the same height. After that, the support bases 18, 18 receiving the support rollers 16, 16 are fixed by the adjusting screws 23, 23. (3) Next, the dummy shaft is lowered, and instead the journal portions of the left and right pieces 1a and 1b of the crankshaft 1 are placed between the base 5 and the pair of support rollers 16 on the base 13. (4) While rotating each piece 1a, 1b of the crankshaft 1 by hand, the shaft heights H of the crank pins 1c of the left and right pieces 1a, 1b are made the same, and the phase angles of the pieces 1a, 1b are made the same. Thus, the support rollers 16 and 16 are fixed by the clamp screws 27 and 27 so that the support rollers 16 and 16 do not rotate when the crank positions are aligned at the same angle on the left and right. (5) Next, temporarily assemble the intermediate gear 2 to the left crankshaft piece 1a. (6) Next, slide the top plate 12 to move the right crankshaft piece 1b to dock it to the intermediate gear 2 and the left crankshaft piece 1a. (7) Thus, as shown in FIG. 8, the knock pin 7 and the bolt 6 are inserted to connect the flanges 8 and 9 of the pieces 1a and 1b, and this assembly is completed. This completes the work. When separating, the reverse of the assembly procedure may be performed.

[0012]

[Effect of the device]

 As described above, according to the present invention, the two pieces 1a and 1b of the crankshaft 1 can be assembled and separated accurately and easily. According to the present invention, the piece 1b of the crankshaft 1 is Since it is arranged between the pair of support rollers 16 and 16, it can be rotated safely and easily and quickly so that the phase angle of the piece 1b can be fixed to the phase angle of the piece 1a and the contact surface thereof may be damaged. There is no such thing.

[Brief description of drawings]

FIG. 1 is a plan view of an embodiment of the present invention.

FIG. 2 is a front view thereof.

FIG. 3 is a plan view of the bearing stand.

FIG. 4 is a front view thereof.

FIG. 5 is a side view of FIG.

FIG. 6 is a perspective view of a bearing base.

FIG. 7 is a vertical sectional view thereof.

FIG. 8 is a partial cross-sectional plan view of a connecting portion of a crankshaft.

FIG. 9 is an explanatory view of a conventional crankshaft supporting device.

[Explanation of symbols]

 1 Crankshaft 1a, 1b 5 pieces 10 Horizontal stand 12 Top plate 13 stand 16 Support roller 18 Bearing stand 27 Clamp screw

Claims (1)

[Scope of utility model registration request] 1. A horizontal base (10) is provided with one of the pieces (1a, 1b) of the crankshaft (1) divided into two.
Supported on a table (5, 5 ...) placed on one side of
A top plate (12) is provided on the other side of the horizontal base (10) so as to slide in the axial direction of the crankshaft (1), and the other piece (1b) of the crankshaft (1) is supported thereon. Place the stand (13, 13 ...),
A pair of support rollers (16, 16) and a bearing base (18, 18) are provided on the upper surfaces of these bases (13, 13 ...) To move back and forth by adjusting screws (23, 23). The other piece (1b) of the crankshaft (1) is placed between the rollers (16, 16) and the bearing stand (1
A support device for a two-piece crankshaft, in which screws (27, 27) for fixing the support rollers (16, 16) are provided on the support rollers (8, 18).