KR0145012B1 - Fluid-actuated tools for elongating and releasing spiral connectors - Google Patents

Abstract

The fluid actuated tool for elongating and relaxing the spiral connector 1 includes a drive 8 driven by a fluid actuated drive 4, 5 having an axis, a fluid actuated drive 4, 5, and With the reaction part, the reaction part 13 comprises a non-rotating tool member 14 provided with a first member 15 which is not rotated to the spiral connector 1, the drive 8 being a spiral connector. A rotary tool member 9 which is rotatable about an axis and has a second member 17 for engaging the non-rotating tool member 14, wherein the intermediate member 19 is a non-rotating tool member 14. And the rotary tool member 9, which is configured to engage the non-rotating tool member 14 so that the rotary tool member 9 does not rotate when the rotary tool member 9 rotates freely with respect to the intermediate member 10. When the 9 is rotated about the axis, the non-rotating tool member 14 is axially oriented. It only moves in the direction and does not rotate so that the spiral connector (1) is pulled in the axial direction.

Description

Fluid-actuated tools for elongating and releasing spiral connectors

1 is a partially cutaway side view of a fluid operated tool according to the present invention;

FIG. 2 is a partial cutaway top view of the fluid actuated tool shown in FIG. 1. FIG.

3 is a partially cutaway view plan view showing a fluid operated tool according to another embodiment of the present invention.

Explanation of symbols on main parts of drawings

1: spiral stud 4: cylinder

5: piston 8: rotating tool member

9: Outer sleeve 10: Coaxial protrusion

13: reaction part 14: non-rotating protrusion

15: non-rotating inner sleeve 17: second coupling means

19: Middle member

The present invention relates to a fluid actuated tool for elongating and relaxing spiral connectors.

Several types of fluid operated wrenches are known.

Some fluid-actuated wrenches have a hydraulic drive unit, a drive unit connected to the spiral connector and driven by the drive unit to rotate the spiral connector by the operation of the drive unit, and a reaction part designed to neutralize the force generated when the spiral connector is rotated. It consists of. The reason why the reaction part is constructed is that a force for rotating the tool in the opposite direction is generated during the rotation of the spiral connector. It is necessary to neutralize this force, which is done by the reaction part in the conventional tool. For example, in the known fluid actuated tools described in U.S. Pat. It is composed of a connecting member that can be in contact with. This reaction part has some drawbacks, although it provides an effective neutralization against the force to rotate the tool in the opposite direction. On the one hand, it is necessary to have an adjacent object to be connected with the reaction part.

On the other hand, the connection to the adjacent object should always be carried out in a structure in which a part of transmitting the movement of the hydraulic drive unit to the drive part and a part of the drive part are easily damaged by force. Therefore modifications and improvements of such fluid operated tools are highly desirable.

It is therefore an object of the present invention to provide a fluid actuated tool without the drawbacks of the prior art.

In accordance with these and other objects, which will become apparent hereinafter, the fluid-actuated tool of the present invention has a hydraulic drive, a drive driven by a hydraulic drive, and a reaction part, wherein the reaction part is non-rotating to the spiral connector. A non-rotating tool member having a first coupling means coupled thereto, the driving portion being rotatable about an axis of a spiral connector, and a rotating tool member having second coupling means for coupling to the non-rotating tool member; And an intermediate member arranged between the non-rotating tool member and the rotary tool member and coupled to the non-rotating tool member so as not to rotate, but configured to rotate the rotary tool member relatively freely. When rotating about an axis, only the non-rotating tool member is moved in the axial direction but not rotated. And it is able to pull the line connector in the axial direction.

When the fluid-actuated tool is constructed in accordance with the present invention the conventional drawbacks are eliminated and have the advantageous result as mentioned above.

Unique configurations deemed to be features of the invention are set forth in the appended claims. But. The present invention will be described in detail with reference to the accompanying drawings, together with their additional objects and advantages in their construction and method of operation.

The fluid actuated tool according to the invention is used for elongating or relaxing a spiral connector, for example a spiral stud 1. This fluid actuated tool has a housing shown as 2.

The fluid actuated drive means is housed in the housing 2 and is typically a cylinder 4, a piston 5 reciprocating in the cylinder under the action of a working fluid, extending out of the cylinder 4 and having a single drive plate ( 7) includes a piston rod 6 connected thereto for rotating.

Also in the embodiment shown in FIGS. 1 and 2 the fluid actuated tool has a non-rotating or reaction part, shown at 13.

This reaction part is for example the upper side of FIG. 2 with a non-rotating protrusion 14 which is mounted so that the tool is not rotated in the housing 2 and has an outer spline and an inner spline that engages with the outer spline of the protrusion 14. And a non-rotating inner sleeve 15 having a portion. The inner sleeve 15 has, for example, an inner surface with first coupling means 16 composed of a spiral that engages with the outer spiral 1 ′ of the stud 1.

The fluid actuated tool also has a drive comprising a rotary tool member, shown at 8. The rotary tool member 8 may be configured as a back sleeve 9 connected with a projection 10 on the same axis as the ratchet wheel 11 intermittently rotatable by a pawl 12 arranged on the drive plate 7. Can be. The inner surface of the outer sleeve 9 is provided with a spiral second coupling means 17 for engaging with, for example, a third coupling means 18 in the form of a coupling spiral formed on the outer surface of the inner sleeve 15. . Outer helix (1`), first coupling means (16) for coupling the spiral stud (1) and the non-rotating inner sleeve (15), for coupling the non-rotating inner sleeve (15) and outer sleeve (9) The spiral directions of the second coupling means 17 and the third coupling means 18 are reversed.

The fluid actuated tool also has an intermediate member indicated by reference numeral 19.

The intermediate member 19 is configured in the form of a ring having an inner spline 20 which engages with an outer spline 21 of the lower axial portion of the inner sleeve 15. It also has an upper end face 22. As shown, the inner sleeve 15 has five faces which cooperate and finish engagement with the outer part of the tool, in particular the face of the first coupling means 16 which is an inner helix, the face of the third coupling means 18 which is an outer helix. And a surface of the spline 21, a surface of the spline which cooperates with the non-rotating protrusion 14, and a lower end surface which is in contact with a flange (not shown) to which the stud 1 is spirally coupled. In contrast, the outer sleeve 8 has three surfaces that are frictionally engaged, in particular the inner helix of the second coupling means 17, the surface cooperating with the protrusion 10, and the upper end surface of the intermediate member 19. It has a lower end face which contacts freely.

During operation of the fluid-actuated tool applied to the stud 1, the inner sleeve 15 is engaged with the stud 1, which is connected with the non-rotating protrusion 14 of the housing 2 and therefore does not rotate. ) To prevent rotation.

Under the action of the fluid-actuated drive, the pawl 12 rotates the ratchet 11, which in turn rotates the outer sleeve 9 by means of its projection 10, which has a lower end face. In contact with the end face 22 of the intermediate member 19, it rotates freely with respect to the intermediate member 19, the inner sleeve 15 is not rotated by the non-rotating protrusion 14, but responds to the rotation of the outer sleeve (9) Only in the axial direction, as a result of which the stud 1 is moved in the axial direction so as to extend or relax the stud 1 according to the direction of action of the fluid-actuated drive.

A fluid actuated tool according to another embodiment of the present invention is shown in FIG. The reaction part of the tool in this embodiment has a socket 23 in addition to the inner sleeve 15 ′, which is for example a non-rotating protrusion 14 which is mounted so as not to rotate in the housing 2 of the tool, for example. It is provided with an inner spline 24 where `) engages with the outer spline 25. In the lower part of FIG. 3, the socket 23 has an inner spline 26 which engages with an outer spline 27 of the intermediate member 19. The inner sleeve 15 ′ does not have an upper side that engages with other parts of the tool as in the case of the first embodiment. When the reaction part is constructed in accordance with the embodiment shown in FIG. 3, the inner sleeve 15 ′ is engaged so that it does not rotate with the intermediate member 19 via the splines 20, 21, and the intermediate member 19. Is also not rotated with the socket 23 through the splines 26 and 27, and the socket 23 is not rotated with the non-rotating protrusion 14 'of the tool via the splines 24 and 25. It cannot be rotated because it is coupled together.

In the embodiment of FIG. 3, the drive of the tool comprises a rotary tool member 8 ′ configured in the form of an outer sleeve 9 ′. The outer sleeve 9 'in this embodiment has an inner spline 28 that engages with the outer spline 29 of the protrusion 10' on the same axis as the ratchet wheel 11, and the ratchet wheel 11 Is rotated intermittently by the pawl 12 installed on the drive plate 7.

During operation of the fluid actuated tool of the embodiment shown in FIG. 3 the inner sleeve 15 ′ is engaged with the stud 1, which is connected to a non-rotating intermediate member 19 connected to the non-rotating socket 23. Therefore, it does not rotate to prevent rotation of the stud (1).

Under the operation of the fluid actuated drive, the pawl 12 rotates the ratchet 11, which rotates the outer sleeve 9 ′ through its protrusion 10 ′, the outer sleeve 9 ′ being underneath. The end face rotates freely with respect to the intermediate member in contact with the end face 22 of the intermediate member 19, and the inner sleeve 15 'does not rotate but moves axially in response to the rotation of the outer sleeve 9'. As a result, this moves the stud 1 in the axial direction to elongate or relax the stud 1 depending on the direction of action of the fluid actuated drive window.

Although the present invention has been shown and described as being able to be implemented in a fluid actuated tool for elongating and relaxing spiral connectors, the present invention is not limited to the illustrated and various modifications may be made without departing from the spirit of the present invention. There may be structural changes.

Claims (8)

A fluid actuated tool for elongating and relaxing a helix connector, the fluid actuated tool comprising a hydraulic actuator, a drive driven by the hydraulic actuator, and a non-rotating reaction portion, the reaction portion being a spiral connector. A non-rotating tool member having a first coupling means coupled to the non-rotating tool, wherein the driving portion is rotatable about an axis of the spiral connector and has second coupling means for coupling to the non-rotating tool member. And a rotating tool member, wherein an intermediate member is disposed between the non-rotating tool member and the rotating tool member and coupled with the non-rotating tool member such that the rotating tool member is not rotated when freely rotating with respect to the intermediate member. The non-rotating tool member when the rotary tool member is rotated about the axis. A fluid actuated tool for elongating and relaxing a helix connector, characterized in that the helix connector is moved only in the axial direction and not rotated to move the helix connector in the axial direction. The method of claim 1, wherein the non-rotating tool member has an inner surface provided with the first coupling means is configured in the form of an inner sleeve that is coupled to the outer surface of the spiral connector by the first coupling means, the inner sleeve is It has an outer surface with a coupling means, the rotary tool member is configured in the form of an outer sleeve having an inner surface with the second coupling means for coupling to the third coupling means of the inner sleeve, the sleeves A fluid actuated tool for elongating and releasing helical connectors characterized by being on the same axis. The method of claim 2, wherein the intermediate member is configured in the form of a ring having an inner surface with a fourth engaging means for engaging the outer surface of the inner sleeve, the ring having an end face, the outer sleeve being the And another end face in contact with said end face of said intermediate member during free rotation of said outer sleeve with respect to said intermediate member. 3. The extension of a helix as claimed in claim 2 wherein the inner sleeve has multiple faces cooperating with other parts of the tool while the outer sleeve has a small number of faces cooperating with other parts of the tool. And relaxation fluid actuated tools. The fluid actuated tool of claim 1, wherein a housing having a non-rotating protrusion is constructed, and wherein the non-rotating tool member is connected to the protrusion so as not to rotate. A spiral connector according to claim 2, wherein a housing having a non-rotating protrusion is constructed, and wherein the inner sleeve is connected to the inner sleeve and the outer sleeve so as not to rotate with the protrusion of the housing. Fluid-actuated tools for extension and relaxation. Spiral connector according to claim 2, characterized in that a housing having a non-rotating protrusion is constructed and a socket is connected to the protrusion of the housing so as not to rotate and to be connected to the intermediate member. Fluid-actuated tools for stretching and relaxation of the body. 8. The fluid actuated tool of claim 7, wherein said socket is disposed radially outwardly of said inner sleeve and outer sleeve.