JPH10291168A - Fitted article pulling-out device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the load relating to the adjustment of displacement for improving the workability, to improve the durability of a device, and to prevent a pulled article from scratched, by installing a copying means by an elastic body between a gripping claw, and a pressure means and a lifting means. SOLUTION: Four springs (elastic bodies) 4a, 4b as the copying means, are installed between the gripping claws 10a, 10b of a pulling-out device, and the table lifters 3a, 3b as the hydraulic jack and a lifting means. The four springs 4a, 4b are deformed in the left and right directions, the gripping claws 4a, 4b and the hydraulic jack itself are moved to compensate the displacement of the left and right shaft centers, and the shaft centers of the shaft 2 and the hydraulic jack are agreed with each other, even when the displacement of the left and right shaft centers, and the angular disagreement are found between the fixed shaft 2 and the hydraulic jack as a pressure means. By the deformation of the four springs 4a, 4b in a rotating direction, the angular disagreement can be similarly compensated, and the shaft centers of the shaft 2 and the hydraulic jack can be agreed with each other.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for heating a hole member such as a coupling or a bearing fitted and fixed to a shaft and removing the hole member from the shaft.

[0002]

2. Description of the Related Art As a conventional device for removing a fitting part, there is known a "device for removing an inserted part" disclosed in Japanese Utility Model Laid-Open Publication No. Sho 62-181381. On the elevating platform to be adjusted, a pair of latch arms are hung on the rear end of the hole member fitted to the shaft, and in this state, the shaft end surface on which the hole member is fitted is pressed by the hydraulic cylinder piston rod. The hole member is extracted from the shaft.

[0003]

However, in the above-mentioned conventional example, the height of the extraction device can be positioned relative to the hole member by adjusting the height by the lifting platform. However, the shaft into which the hole member is fitted and fixed is used. There is a problem that it is very difficult to adjust the positional deviation and the angular deviation between the left and right axes of the rod and the rod of the pressure means (for example, a hydraulic jack).

When the extracting device is operated in a state where there is a deviation in the axial center position and the angular deviation, a deviation load generated from the axial deviation and the angular deviation acts on the extracting device to cause breakage or to remove the hole member. In this case, there is a problem that the shaft and the hole parts are scratched.

Accordingly, an object of the present invention is to displace the right and left shaft centers between the shaft in which the hole member is fitted and fixed and the hydraulic jack rod between the gripping claws of the extracting device and the pressurizing means and the elevating means, or By providing a scanning means that corrects both the left and right axial center position deviation and the angle deviation, the load on the operator for the deviation adjustment is reduced, the workability is improved, and the durability of the device is improved, and there is no damage to the sampled product. An object of the present invention is to provide a sampling device that does not occur.

[0006]

According to a first aspect of the present invention, a gripping claw for gripping a hole member fitted and fixed to a shaft, and a pressing means for pressing an end of the shaft are provided with an ascending and descending mechanism. A fitting object removal device for removing a hole member, which is provided on the means, wherein a gripping claw and a copying device provided with an elastic body between the pressing means and the elevating means are provided.

According to a second aspect of the present invention, there is provided a fitting for extracting a hole member, wherein a gripping claw for gripping the hole member fitted and fixed to the shaft and a pressing means for pressing the shaft end are provided on the elevating means. In the object extracting device, a copying means including a gripping claw, a guiding means that can move in a direction perpendicular to the longitudinal direction of the shaft between the pressing means and the elevating means, and a core-centering means having a force to return to a fixed position is provided. It is a fitting object extracting device provided.

Further, according to a third aspect of the present invention, there is provided the extracting device according to the first and second aspects, wherein the fitted object is provided with fixing means for fixing the gripping claw and the copying means between the pressing means and the elevating means. Device.

According to the first aspect of the present invention, when there is a right and left axial center position deviation and an angle deviation between the shaft in which the hole member is fitted and fixed and the pressing means (for example, a hydraulic jack), the removal device is gripped. Since an elastic body (for example, a spring) is provided between the pawl and the hydraulic jack (pressurizing means) and the elevating means, when the gripping pawl is set in the hole member, the left and right axes are shifted. One of the gripping claws comes in contact with the hole member (or the gate-shaped plate which is a jig for setting the gripping claw in the hole member) first, and the spring (elastic body) ) Is deformed in the left-right direction, the gripping claw and the hydraulic jack (pressurizing means) themselves move to absorb the left and right axis misalignment, so that the axis and the axis of the hydraulic jack can be aligned. For hydraulic misalignment, If there is an angular misalignment when the hole member is pressed by the jack, one of the two gripping claws comes into contact with the hole member (or portal plate) first, but the moment generated at that time When the spring (elastic body) is deformed in the rotation direction by the force, the gripping claw and the hydraulic jack (pressing means) themselves rotate to absorb the angle deviation, and the shaft and the axis of the hydraulic jack are aligned. be able to.

According to a second aspect of the present invention, a guide means (for example, a linear guide) which can move in a direction orthogonal to the longitudinal direction of the shaft between the gripping claw and the pressing means and the elevating means, and returns to a fixed position. A centripetal means having a force to be sought (for example, 2
Because the springs are provided, the gripping claws and the hydraulic jacks (pressing means) themselves are usually at a fixed position of the device by the balance of the two types of spring forces, but the hole members are fitted and fixed. When the left and right axes of the shaft and the pressing means (for example, a hydraulic jack) are misaligned, when setting the gripping claws to the hole members, one of the two gripping claws comes first with the hole member (or The springs (elastic bodies) are deformed in the left-right direction due to the contact force generated at that time. In addition, the gripping claw and the hydraulic jack (pressing means) themselves slide on the linear guide so as to absorb the misalignment between the left and right axes, thereby making the axis and the axis of the hydraulic jack rod coincide.

Further, in the configuration according to the third aspect, since the copying means is provided between the gripping claw and the pressing means and the elevating means, the gripping claw and the pressing means are moved when the extracting device body is moved. Because of the possibility of vibration, the effect of suppressing vibration can be reduced by fixing the space between the gripping claw and the pressurizing means and the elevating means with the method of inflating the air picker in the outer cylinder or using a plurality of small jacks. Can demonstrate.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a side view of a fitted object extracting device according to a first embodiment of the present invention. In the present embodiment shown in FIG. 1, the hole member 1 is hooked directly on the hole member 1 shrink-fitted and fixed to the shaft 2 or the hook members 10a and 10b are hooked via the portal plate 5 to form the hole member. 1, a flame burner 7a, which is a means for heating the hole member from the outer peripheral surface of
Heating is performed at 7b, 7c and 7d, and the shaft end is pressed by the hydraulic jack 20 to perform extraction.

FIG. 2 is an explanatory view of the shaft positioning operation of the embodiment shown in FIG. FIG. 3 is an explanatory diagram of the pressurizing operation of the embodiment shown in FIG. FIG. 4 is a detailed front view of the copying means of the embodiment shown in FIG. FIG. 5 is an explanatory diagram of the extracting operation of the embodiment shown in FIG.

Next, the operation will be described with reference to the drawings. First, in preparation for shaft positioning, the fitted object is placed on a table using a lifting machine, or is transported toward a gripping claw side by a transport vehicle, and as shown in FIGS. If you do not want to apply a load directly to the flange part of
Of the gate type plate 5 on the back of the
0b is engaged with the side surface of the gate-shaped plate 5 so that the hole member 1 is gripped and fixed.

Here, the gripping claws 10a, 1
0b and four springs (elastic bodies) 4a, 4b, 4c, 4d as copying means are installed between the hydraulic jack 20 and the table lifters 3a, 3b as lifting means,
Even if the left and right axes are misaligned and angularly displaced between the shaft 2 in which the hole member 1 is fitted and fixed and the hydraulic jack 20 as the pressurizing means, the two grippers 1
When expanding and contracting 0a and 10b and setting them in the hole member 2,
One of the two springs 4a, 4b, 4c, 4d is contacted by the contact force generated at that time while the two gripping claws 10a, 10b are closed.
Is deformed in the left-right direction, whereby the gripping claws in contact with the portal frame 5 are held at that position, and the gripping claws 10a,
The movement of the hydraulic jack 10b and the hydraulic jack 20 itself can absorb the misalignment of the left and right axes, and can match the axis of the shaft 2 with the axis of the hydraulic jack 20.

Similarly, regarding the angle shift, when the portal frame 5 is pressed by the hydraulic jack 20, one of the two gripping claws 10a and 10b comes into contact with the portal plate 5 first. When the four springs 4a, 4b, 4c, and 4d are deformed in the rotational direction by the moment force generated at the time, the two gripping claws 10a, 10
By rotating the b and the hydraulic jack 20 itself, the angle deviation 5 ° is absorbed, and the axis of the shaft 2 and the hydraulic jack 20 can be aligned.

After aligning the axis of the shaft 2 with the axis of the hydraulic jack 20, the hole member 1 is held while being held by the holding claws 10a and 10b.
The four flame burners 7a, 7b, 7c, 7d supported by the burner support racks 6a, 6b, 6c, 6d are oscillated in the circumferential direction and tilted to heat uniformly and rapidly. At the same time, as shown in FIG. 5 (a), the shaft end is pressed by the hydraulic jack 20 as it is, the hole member 1 is pulled out from the shaft 2, and the hole member 1 pulled out as shown in FIG.
Is carried out while holding the inner diameter portion by the component support mechanism 40.

When the hole member 2 is a gear coupling, the outer gear of the gear coupling is connected to the clamp 5.
0a and 50b are raised and lowered by the lifting cylinder 60, and while being expanded and contracted by the expansion and contraction cylinder 70, adjusted to the position of the flange portion of the outer gear, and the flange portion is gripped by the gripping claws 10a and 10b. At 70, it can be moved back and forth in the axial direction.

By this back-and-forth movement, the portion of the inner gear of the gear coupling to be heated can be exposed, and the flame burners 7a, 7b, 7c and 7d can uniformly and rapidly heat.

Here, since four springs 4a, 4b, 4c and 4d are provided between the gripping claws 10a and 10b and the hydraulic jack 20 and the table lifter, the gripping claws 10a are required to move the extracting device body. , 10b and the hydraulic jack 20 themselves may vibrate, making positioning difficult. Therefore, the outer cylinder 8a is used to restrict the movement between the gripping claws 10a, 10b and the hydraulic jack 20 and the table lifters 3a, 3b. , 8b and air picker 9a,
9b is installed, and when the copying apparatus does not need the copying performance while the extracting apparatus body is moving, the outer cylinder 8 is used.
The air pickers 9a and 9b are inflated in a and 8b, and are constrained and fixed between the outer cylinders 8a and 8b and the air pickers 9a and 9b.

The inventor of the present invention has described that the gripping claws 10a and 10b and the hydraulic jack 20 are located between the table lifters 3a and 3b.
Using a pull-out device provided with the four springs 4a, 4b, 4c, and 4d, between the shaft in which a gear coupling (inner diameter d: 320 mm, interference: 160 μm) is fitted and fixed as a hole member and the hydraulic jack 20. As a result of performing the extraction work with a sufficient amount of displacement (axial center position deviation to the right of 50 mm and angle deviation of 8 °), it is possible to perform a good extraction work without causing galling damage to the shaft and hole parts I confirmed that I can do it.

FIG. 6 is a side view of a fitted object extracting apparatus according to a second embodiment of the present invention. In this embodiment shown in FIG. 6, two gripping claws 10a and 10b are directly hooked on a hole member (not shown) which is shrink-fitted and fixed on a shaft, or two gripping claws 10a and 10b are Is heated by a flame burner by hand from the outer peripheral surface of the hole member, and the shaft end is pressed by a hydraulic jack 20 as a pressurizing means to perform extraction. FIG. 7 is a detailed top view of the copying means of the fitted object extracting device shown in FIG. FIG. 8 is a detailed side view of the copying means of the fitted object extracting device shown in FIG.

Next, the operation will be described with reference to the drawings. First, in preparation for shaft positioning, the extraction device is moved from the storage location to the current work location by self-propelled movement, and the fitted object is placed on the table using a crane. The position of the shaft end and the hydraulic jack 20 are adjusted while moving the extracting device toward the table, and the positioning is performed so that the gripping claws 10a and 10b can be hooked and fixed to the hole members.

At this time, if it is not desired to apply a load directly to the flange portion or the outer diameter portion of the hole member, the portal plate is hooked on the back of the hole member, and the gripping claws 10a and 10b are attached to the side surfaces of the portal plate 5. And the hole member is gripped and fixed.

Here, the gripping claws 10a, 1
0b and linear guides 80a, 80b, 80c, and 80d, which are guide means that can move between the hydraulic jack 20 and the table lifters 3a and 3b as lift means in a direction orthogonal to the longitudinal direction of the shaft as the copying means. Two types of centering springs 90a and 90b, which are centering means having a force to return to the position, are provided, and there is a left and right axial center misalignment between the shaft in which the hole member is fitted and fixed and the hydraulic jack 20. Even in this case, the gripping claws 10a and 10b and the hydraulic jack 20 itself usually have two sets of springs 90a and 90b.
Is set at the center of the apparatus, but when setting the gripping claws 10a and 10b to the hole member, one of the two gripping claws 10a and 10b is first placed on the hole member (or portal plate). The centering springs 90a and 90b are deformed in the left-right direction by the contact force generated at that time, so that the gripping claws and the hydraulic jacks (pressing means) themselves are linear guides 80a, 80b, and 80.
By sliding on c and 80d, the misalignment of the left and right axes can be absorbed, and the axis and the axis of the hydraulic jack 20 can be matched.

After the shaft and the axis of the hydraulic jack 20 are aligned, the hole member is held while being held by the holding claws 10a and 10b.
Heat can be uniformly and rapidly heated by the flame burner manually, and the shaft end can be pressed by the hydraulic jack 20 to remove the hole member from the shaft.

The present inventor has proposed linear guides 80a, 80b, 80c, 80d, and 2 that can be moved between the gripping claws 10a and 10b and the hydraulic jack 20 and the table lifters 3a and 3b in a direction perpendicular to the longitudinal direction of the shaft. As a hole member, a flange-type coupling (inner diameter d: 2
(40 mm, interference: 120 μm), and a sufficient amount of displacement (45 mm in shaft center position to the right and 7 ° in angle) between the shaft in which the shaft is fitted and fixed and the hydraulic jack 20. It was confirmed that a good extraction work could be carried out without any galling of the shaft and hole parts.

[0028]

As described above, according to the present invention,
Between the gripping claw and the pressing means and the elevating means of the extracting device,
By providing a copying means that absorbs both the left and right axial center position deviation between the shaft into which the hole member is fitted and fixed and the hydraulic jack rod, or both the left and right axial center position deviation and the angle deviation, the operator can adjust the deviation adjustment. The load can be reduced, the workability can be improved, the durability of the device can be improved, and the extraction work can be performed without causing any damage to maintenance items such as the hole member and the shaft.

[Brief description of the drawings]

FIG. 1 is a side view of a fitted object extracting device according to a first embodiment of the present invention.

FIG. 2 is an explanatory diagram of a shaft positioning operation of the fitted object extracting device shown in FIG.

FIG. 3 is an explanatory diagram of a pressurizing operation of the fitted object extracting device shown in FIG. 1;

FIG. 4 is a detailed front view of the copying means of the fitted object extracting device shown in FIG. 1;

FIG. 5 is an explanatory diagram of a removing operation of the fitted object removing device shown in FIG. 1;

FIG. 6 is a side view of the fitted object extracting device according to the first embodiment of the present invention.

FIG. 7 is a detailed top view of the copying means of the fitted object extracting device shown in FIG. 6;

8 is a detailed side view of the copying means of the fitted object extracting device shown in FIG. 6;

[Explanation of symbols]

 Reference Signs List 1 hole member 2 shaft 3a, 3b table lifter 4a, 4b, 4c, 4d spring 5 portal plate 6a, 6b burner support rack 7a, 7b, 7c, 7d flame burner 8a, 8b outer cylinder 9a, 9b air picker 10a, 10b Gripping claw 20 Hydraulic jack 40 Parts support mechanism 50a, 50b Clamp 60 Lifting cylinder 70 Telescopic cylinder 80a, 80b, 80c, 80d Linear guide 90a, 90b Centering spring

 ──────────────────────────────────────────────────の Continued on the front page (72) Inventor Kenichi Kushibiki 1 Kimitsu, Kimitsu City, Chiba Prefecture Inside Nippon Steel Corporation (72) Inventor Yoshihiro Sakagami 1 Kimitsu City, Kimitsu City, Chiba Prefecture Nippon Steel Corporation Inside the company Kimitsu Works

Claims (3)

[Claims] 1. A fitting object extracting device for extracting a hole member, wherein a gripping claw for gripping a hole member fitted and fixed to a shaft and a pressurizing means for pressing an end of the shaft are provided on an elevating device. A fitted object extracting device, wherein a copying means using an elastic body is provided between the gripping claw and the pressing means and the elevating means. 2. A fitting object extracting device for extracting a hole member, wherein a gripping claw for gripping a hole member fitted and fixed to a shaft and a pressurizing means for pressing an end of the shaft are provided on the elevating means. A claw, a guide means which can move in a direction perpendicular to the longitudinal direction of the shaft, and a copying means comprising a centripetal means having a force for returning to a home position between the pressing means and the elevating means; Fitting extraction device. 3. The extraction device according to claim 1, further comprising fixing means for fixing a gripping claw and a copying means between the pressing means and the elevating means.