JP2578116Y2 - Power transmission shaft support device - Google Patents

Description

[Detailed description of the invention]

[0001]

[Industrial application] This invention is used for general industrial machinery, etc.
Power transmission shaft for transmitting the power of the prime mover to the driven
The present invention relates to a power transmission shaft support device for supporting a drive shaft or a driven shaft when attaching or detaching it.

[0002]

2. Description of the Related Art An example in which this type of apparatus is used is shown in FIG. 1 is a motor as a drive source, 2 is a speed reducer, 3 is a distributor for distributing power to a plurality, and 4 and 4 'are power transmission shafts having universal joints at both ends and having axially expandable and contractible shafts. Is a power transmission shaft support device to which the present invention is applied, 6 is a roll support stand, 7, 7 'are rolling rolls, and 8, 8' are auxiliary rolls.

[0003] Now, when the rolling rolls are worn and need to be replaced, the power transmission shaft is supported by the support device 5, and is disengaged from the roll shaft and further separated from the roll shaft. The power transmission shaft must be moved the required distance in the axial direction. After replacing the rolling rolls, the end of the power transmission shaft is brought closer to the roll shaft side and connected, contrary to the case of removing the rolling rolls.

When the power transmission shafts 4, 4 'themselves are replaced, the power transmission shafts are supported in the axial direction, and the power transmission shafts are mounted in the axial direction in order to attach / detach to / from the rolling roll shaft or the distributor 3 connected thereto. Need to be moved to

Conventionally, when a rolling roll or its power transmission shaft is replaced, a heavy power transmission shaft is supported by a crane or a simple device called a rest device in order to attach and remove the connecting portion. Support devices were used. However, these methods not only require a large number of experienced workers, but also require a long time for the replacement work and are dangerous.

Various support devices have been proposed, for example, as disclosed in Japanese Patent Publication No. 58-54887.
In general, there is also a problem that a complicated mechanism is provided and the cost increases.

[0007]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems of the prior art, and has a relatively simple mechanism and therefore low cost.
It is an object of the present invention to provide a power transmission shaft support device capable of safely and quickly replacing a power transmission shaft and the like.

[0008]

To achieve this object, the present invention provides an outer frame which engages with a first slide shifter provided on a base and is movable in a direction parallel to a power transmission shaft. A hydraulic cylinder that moves the outer frame, an inner frame that engages with a second slide shifter provided inside the outer frame and is movable in the vertical direction, a hydraulic jack that moves the inner frame, At least one set of work supports that support the lower outer periphery of the power transmission shaft inserted in the inner frame in a substantially inverted octagonal shape, and abut on both sides of the supported power transmission shaft to be fixed on the work support At least one set of fixed pawls, and a lever for rotating the fixed pawls to contact and separate from both side surfaces of the power transmission shaft.

In the case where at least two sets of work supports are provided in the vertical direction, other work supports except for the lowermost work support are rotatable about a rotation axis, and a pair of rotated work supports are provided. The distance between the work supports is made wider than the diameter of the power transmission shaft.

[0010]

According to this configuration, in the operation of removing the drive-side joint or the driven-side joint of the power transmission shaft from the drive shaft or the driven shaft, the inner frame is moved upward with respect to the power transmission shaft inserted into the inner frame. After moving and supporting the work support having a substantially inverted octagonal shape on the lower outer periphery thereof, removing a fastening bolt with a drive shaft or a driven shaft, and moving the outer frame in a direction parallel to the power transmission shaft, the both are moved. Apart. Also, in the mounting operation, the lower outer periphery of the power transmission shaft inserted into the inner frame is supported by a substantially inverted octagonal work support, and the outer frame is moved in that state, and the drive shaft or the driven shaft is connected to the joint. Align and bolt. Then lower the inner frame to separate the work support from the power transmission shaft.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments will be described below in detail with reference to the drawings. FIGS. 1 and 2 show an embodiment of the present invention, wherein 4 and 4 'are provided with spline shafts which can be extended and contracted in the axial direction and joints at both ends thereof, as shown in FIG. A power transmission shaft arranged substantially horizontally, and a drive-side joint and a driven-side joint are connected to the drive shaft and the driven shaft. Reference numeral 11 denotes an outer frame, which is engaged with a first slide shifter 13 provided on the base 12 and is movable in a direction parallel to the power transmission shafts 4, 4 '. Reference numeral 14 denotes a hydraulic cylinder for moving the outer frame 11. Reference numeral 15 denotes an inner frame which engages with a second slide shifter 16 provided inside the outer frame 11 and is movable in the vertical direction. The inner frame 15 is a hydraulic jack 17 operated by a lever operation of a manual pump 18. Can be moved.

Reference numerals 19a, 19b, 20a, and 20b are provided in the inner frame 15, and two sets of work supports 21a, 21b, which support the lower outer periphery of the power transmission shaft inserted in the inner frame in a substantially inverted octagonal shape. 22a,
Reference numeral 22b denotes two sets of fixed pawls which abut on both side surfaces of the supported power transmission shaft and are fixed on the work support. The fixed pawls are driven by rotating levers 23a, 23b, 24a and 24b to transmit power. It can be in contact with and separated from both side surfaces of the shaft.

Of the two sets of work supports, the upper work supports 19a and 19b are rotatable about a rotation shaft 26. When the work supports 19a and 19b protrude to support the power transmission shaft, they are engaged by pins 27. Although stopped, when the pin 27 is removed, the work supports 19a and 19b rotate by their own weight, and the interval between the work supports when the work support 19a and 19b rotates is wider than the diameter of the power transmission shaft.

Next, the operation of this embodiment will be described. First,
In order to remove the connection when replacing the rolling rolls or replacing the power transmission shaft, the work supports 19a and 19b are locked with the projecting parts protruding, and the inner frame 15 is lifted by the hydraulic jack 17 to thereby provide two sets of workpieces. Support 19a, 19
b, 20a and 20b are pressed into contact with the lower outer periphery of desired positions of the two power transmission shafts 4 and 4 'inserted into the inner frame 15. Also, rotate the levers 23a, 23b, 24a, 24b to fix the pawls.
21a, 21b, 22a, 22b are inserted into the recesses of the power transmission shafts 4, 4 ', and the power transmission shafts 4, 4' are connected to the work supports 19a, 19b, 2
Fixed to 0a, 20b. With the power transmission shafts 4, 4 'thus supported, the fastening member of the connecting portion is removed. Next, the hydraulic cylinder 14 is operated to move the outer frame 11 in a direction in which the mating sides of the connecting portions are separated from each other.

[0015] Thus, the replacement of the rolling rolls is easily performed hereinafter. In replacing the power transmission shaft, the end on the side from which the connecting portion has been removed is supported by a crane or the like, and the connecting portion on the other end is removed in the same manner, and this is also supported by a crane and taken out. In this case, when the upper power transmission shaft 4 is detached and the lower power transmission shaft 4 'is taken out, the work supports 19a, 19b are obstructed when the work supports 19a, 19b protrude. , And the lower power transmission shaft 4 ′
For easy removal.

In this embodiment constructed as described above, when the drive-side joint or the driven-side joint of the power transmission shafts 4, 4 'is detached from the drive shaft or the driven shaft, the power transmission shaft is stably prevented from wobbling. Therefore, the work is very easy and the safety is high, and the work can be completed in a short time by a small number of workers.

Specifically, the replacement work of the power transmission shaft of the four stands, which conventionally took three to four hours with six to seven workers, is now performed by using the apparatus of this embodiment. With two members, I was able to do it in less than an hour.

[0018]

[Effects of the Invention] As described above, according to the present invention,
Workability and safety are extremely high, and work efficiency and work cost can be reduced. In addition, since the structure is simpler than that of the conventional supporting device, there is an effect that the device cost can be significantly reduced.

[Brief description of the drawings]

FIG. 1 is a front view of a power transmission shaft support device according to an embodiment of the present invention.

FIG. 2 is a side view of the same.

FIG. 3 is a diagram illustrating an example in which the power transmission shaft support device according to the present invention is used;

[Explanation of symbols]

4, 4 '... power transmission shaft, 11 ... outer frame, 12 ... base, 13 ... first slide shifter, 14 ... hydraulic cylinder, 15 ... inner frame, 16 ... second slide shifter,
17 ... Hydraulic jack, 19a, 19b, 20a, 20b ... Work support, 21a, 21b, 22a, 22b ... Fixed pawl, 2
3a, 23b, 24a, 24b ... Lever.

Claims (2)

(57) [Scope of request for utility model registration] When a drive-side joint or a driven-side joint of a power transmission shaft, which is provided with joints at both ends of an axially expandable and contractible shaft portion and is disposed substantially horizontally, is attached to or detached from the drive shaft or the driven shaft. An apparatus for supporting the power transmission shaft, the outer frame being engaged with a first slide shifter provided on a base and movable in a direction parallel to the power transmission shaft, and a hydraulic cylinder for moving the outer frame An inner frame engaged with a second slide shifter provided inside the outer frame and movable in the vertical direction; a hydraulic jack for moving the inner frame; and an inner frame provided in the inner frame. At least one pair of work supports that support the lower outer periphery of the power transmission shaft inserted through the power transmission shaft in a substantially inverted octagonal shape, and at least one pair that abuts on both side surfaces of the supported power transmission shaft and is fixed on the work support. And the fixed pawl is rotated. A power transmission shaft support device, comprising: a lever that comes into contact with and separates from both side surfaces of the power transmission shaft. 2. A method in which at least two sets of work supports are provided in the vertical direction, other work supports except for the lowermost work support are rotatable around a rotation axis, and a pair of rotated work supports is provided. The power transmission shaft support device according to claim 1, wherein the interval between the work supports is wider than the diameter of the power transmission shaft.