JPS6215084A - Jack bolt assembly - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION FIELD OF THE INVENTION The field of this invention is particularly directed to flow passages of the type used to clamp flanged members together, but also used to pull apart joined flanges. !
) relates to a device used in connection with a flange.

BACKGROUND OF THE INVENTION Connected flanges that are tightly clamped together have historically presented difficulties in disassembling them.

Typically, joined flanges with multiple aligned holes for receiving bolts, etc., have been tightly assembled for a period of time before the process of removing the bolts and pulling the flanges apart. be placed in a difficult work situation. There are some systems that have constructions that very easily manipulate the forces required to pull apart the joined flanges when loosening is required, while other systems They do not have the ability to support or align them during the pulling apart phase.

Efforts have been made to separate various types of flanges, such as U.S. Pat. No. 1,707,870;
1.852,521: 2,393,795;2
．． 654.569: 3.711,920: as well as those taught in 3.997,957.

Some prior art devices, such as those disclosed in U.S. Pat. No. 4,027,373, teach the use of devices that can be used with both flange bolts as well as flange spreaders. Additionally, U.S. Pat. No. 4,015,324 discloses an apparatus for separating flanged pipes using a cammed, threaded bolt arrangement. Other types of devices include one in which one of the mating surfaces of a pair of flanges is not aligned with the hole for securing the flanges together.
Includes those having machined threaded holes for receiving threaded members. This threaded hole engages a nut mounted in a countersunk hole formed in the flange surface of the connection 7 for use in separating the flange members to which the threaded bolt is connected. enable.

However, as far as we know, the flange separating device, which is still in use as a fastener for the flange, serves the dual purpose of being a jack bolt for separating the flange members, and that the separated flange is separated. None provide both support and alignment of the flange while being attached. Support and alignment of the joined flanges during separation is important to prevent twisting and slipping of the opposing flange surfaces with respect to each other, which may also risk damage to the flanges. It requires minimal tools and time to complete as well.

SUMMARY OF THE INVENTION The present invention provides a new and improved jack bolt for separating first and second flange members of a removably fastened flange assembly that includes a jack bolt member extending between the flange members of the flange assembly. Regarding assembled products.

The jack bolt member has a longitudinally extending generally bar-like shape and has a first threaded portion for threaded engagement with one of the holes in the first flange member. a radial engaging surface formed adjacent to the threaded portion and axially aligned with the threaded portion and formed on a second flange member of the flange assembly; the thrust member receptacle having a thrust member receptacle extending partially within the aligned bore; The jack bolt assembly is further movably attached to the thrust member housing portion for contacting the radial engagement surface as well as the second flange member upon initial rotation of the first threaded portion. a thrust member;
the thrust member engaging a second flange member to separate the first and second flange members of the flange assembly upon subsequent rotation of the first threaded portion; .

In the drawings, the jack bolt assembly of the present invention is generally designated by the letter A. Jack bolt assembly A is adapted for use in conjunction with flange assembly F, with jack bolt assembly A including jack bolt member J and thrust member M. The jack bolt member J further includes a first threaded portion P, a radial engagement surface R and a thrust member storage portion for receiving the thrust member M.

Unless otherwise specified, jack bolt assemblies A of the present invention are all capable of withstanding typically high tensile and compressive forces as well as the ability to withstand adverse environmental conditions typically encountered in the use of flange assemblies. Preferably, it is constructed of a suitable high strength material such as stainless steel or the like.

The jack bolt assembly A of the present invention is adapted to be used to pull apart a releasably tightened flange assembly F. Flange assembly F, as generally depicted in FIGS. 1-3, typically includes a first flange member 10 and a second flange member 12. Typically, the first and second flange members 10.12 are adapted to be sufficiently axially aligned with each other when the first and second flange members 10.12 are properly secured together. Holes lined up in a straight line 1
0a and 12a. The flange member 10
．． 12 is the joined radial surface 10b, 12
b respectively, upon suitable assembly between the first and second flange members 10, 12 of said flange assembly F, directly interengaging each other, or as depicted in the drawings, a suitable member 14 thereof. The jack bolt assembly A of the present invention is adapted to be releasably tightened by the jack bolt assembly A of the present invention. The member 14 has a hole 14a adapted to be axially aligned with the holes 10a, 12a of the first and second flange members 10, 12, respectively, and further provides a connection between the first and second flange members 10.12. It can be formed with an annular portion 14b adapted to be disposed between surfaces 1Qb and 12b in the radial direction. Member 14
is a gasket, slip blind, slip blind, steaming blind or other type of structure suitable for installation between the opposing joined radial surfaces 10b #12b of the flange member 10.12 of the flange assembly F. can be included. Member 14 may also include any other type of structure typically known to be attachable with or between any type and type of valve or flange member 10.12 of flange assembly F. I can do it.

The flange member 10.12 typically has inner annular surfaces 10c, 12c formed adjacent to the coupled radial surfaces iQb, 12b, respectively, and further adjacent the inner annular surfaces 10e, 12e. It is formed with inner radial flange ring surfaces 10d and 12d formed respectively.

The outer annular surface 10e, 12e is adjacent to the inner radial flange ring 10d, 12d and further extends from the outer annular surface 10.
e, 12e, respectively, and formed by outer M radial flange ring surfaces 10f, 12f formed substantially parallel to said inner radial flange ring surfaces 10d, 12d. Typically, first and second flange members 10.
12 housing 10g.

12g, respectively, at the end 10 according to a typical weldment in the weldment sections 10i, 12i, or by other suitable means.
h, suitable for attachment to a suitable channel (not shown) adjacent to 12h.

Therefore, the first flange member 10 has a suitable flow path (not shown).
, and the second flange member 12 is connected to a suitable flow path (not shown), thus allowing the flow path connected to the first and second flange members 10, 12 to form a suitable structure of the flange assembly F. will be combined depending on the Preferably,
The first and second flange members 10.12 are arranged such that for each hole 10j formed in the first flange member 10, a corresponding axially aligned hole 12j is formed in the second flange member 12. a plurality of holes 10j, with holes 10j, 12j adapted to be axially aligned with each other;
12j.

Preferably, holes 10j and 12j are liquid holes 10a.

inner and outer radial flange ring surfaces 10d formed substantially parallel to 12a;

12d, 10f, and 12f, respectively.

Below the flange assembly are regular bolts and nuts (not shown)
hole 10j to the extent that they can be assembled together by
, 12j may have the same diameter. However, as discussed more fully below, to the extent that holes 10j, 12j are adapted to receive the jack bolt assembly A of the present invention, this may not be the case.

The jack bolt assembly A of the present invention is adapted for use to separate the joined first and second flange members 10.12 of a releasably fastened flange assembly F.

Jack bolt assembly A includes a jack bolt member J adapted to extend between first and second flange members 10.12 of flange assembly F. Preferably, the jack bolt member J has a longitudinally extending generally rod-like shape and generally includes an initial threaded portion P, a radial engagement surface R, and a thrust member housing portion. have a child

The first threaded portion P of the jack bolt member J has a plurality of threads 16a formed on its outer annular surface;
At the same time, the thread 16a includes a threaded portion 16 extending from the first end 16b and extending between the first end 16b and the second end 16e. The radial engagement surface R includes a radial surface 18 formed adjacent to the second end 16c of the threaded portion 16 of the first threaded portion P. It is formed adjacent to the first threaded portion P of the enclosing hole.

Preferably, the radial engagement surface R extends radially inwardly from the initial threaded portion P.

The jack bolt member J further includes a thrust member storage portion including a storage portion 20 formed adjacent to the first threaded portion P and the radial engagement surface R. Preferably, the thrust member housing element is axially aligned with the first threaded section P. A secondary threaded portion 22 is preferably formed adjacent to and in axial alignment with the thrust member housing element and further includes a plurality of threads 22& formed around its outer annular surface. It is suitably formed. The clamping member 24 is adapted to threadably engage the threads 22a of the secondary threaded portion 22 by means of a compliantly made thread 24a formed therewith. The tightening member 24 may include any type of suitable nut or the like.

The jack bolt member J of the present invention is formed in axial alignment with the first threaded portion P to further facilitate rotation of the jack bolt J, as discussed more fully below. It further includes a tool engaging end, indicated generally at 26. As shown in Figures 1-3, the tool engaging end 2
6 is suitably formed to have a shape compatible with the tool 27 (FIG. 2A) to be used for rotating the jack bolt member J by engagement of the tool face 27a of the tool 27 with the tool engaging end 26. be done. As shown in FIGS. 1-3, the outer surface of the tool engaging end 26 has a multi-sided shape having side surfaces 26a. The side surface 26a can form any suitable shape such as triangular, square, rectangular, hexagonal, or any other suitable shape required, while the tool surface 2
7a is adapted and shaped to engage such side 26a of the tool engaging end 26. selectively the tool engaging end 26
As best seen in FIG. 4, the stepped threaded portion 26
b and a driving member 26c. Preferably, the mounting threads are initially formed adjacent to the threaded portion P of and in axial alignment with the adjacent end 16b. It is preferred that the drive member 26c has the same outer surface shape as the tightening member 24 for the reasons set out below. Preferably, the drive member 26c has a stepped threaded portion 26b.
When properly screwed into the drive member 26e, the end surface 26e of the drive member 26e engages a radial surface 26f extending between the threaded portion 26b and the thread 16d of the threaded portion 16 adjacent the first end 16b. do. As a result, any rotational input by the tool 27 acting on the tool engaging end 26 will result in the jack bolt member J rotating.

The jack bolt assembly of the present invention further includes a thrust member M movably attached to the thrust member housing component, the thrust member M being movably mounted between the first and second flange members 10, 12 of the flange assembly F. adapted to be placed and As shown in FIGS. 1 and 2, the thrust member M has a radial surface 28b of the hole 2881.

28e and an outer annular surface 28d. Optionally, the thrust member M has holes 30a, looses 30b, 30c, and bearings 30d.
and a thrust bearing 30 (FIG. 3) having radial ff 130e, 30f. Either the thrust washer 28 or the thrust bearing 30 has holes 28a and 30a in the storage portion 20.
The jack bolt member J is adapted to be retractably mounted around the thrust member storage portion of the jack bolt member J.

As best seen in FIG. 1, the inventive jack bolt assembly A can further include insulation means, generally indicated at 32, formed on the second flange member 12. The jack bolt member is adapted to be mounted in the hole 12j around the housing portion 20 and secondary portion 22 of the jack bolt member. Insulating means 32 thus has an outer annular surface 32b adapted to be placed within hole 32a and hole 12j for receiving said housing portion 20 and secondary threaded portion 22 therein. It is formed by Additionally, the insulating means 32 is such that the end flange 32c is connected to the inner radial flange ring surface 12 of the second flange member 12.
d and the thrust member M, while the end flange 32d is adapted to be located between the outer radial flange ring surface 12f and the clamping member 24. washer 32c,
32d. A washer 34 can be placed between the clamping member 24 and the end flange 32d, if desired. The washer 34 is formed with a suitable hole 34a so that the washer 34 can be received in the secondary threaded portion 22 of the jack bolt member J. The insulating means 32 is used to insulate the jack bolt member J from harmful currents such as unwanted electrolysis or potential differences across the flange member 10.12 and/or to eliminate the corrosive effects of the environment in the jack bolt assembly of the present invention. It can be used in conjunction with the jack bolt member J and the thrust member M when forming. The insulation means 32 may be suitably formed from any suitable fibrous material capable of resisting and preventing undesirable electrolytic effects.

During use or operation of the jack bolt assembly A of the present invention, the first and second flange members 10 of the flange assembly F
．． 12 are intended to be tightened together by a plurality of pairs of nut and bolt assemblies (not shown) to be used initially in tightening the first and second flange members 10.12 together. The jack bolt assembly A of the present invention comprises two complete jack bolt assemblies A that are attachable to the flange assembly such that they are 180° apart.
Preferably, it is used in place of two bolt donut assemblies. The jack bolt assembly A is adapted for use both in joining the flange members 10.12 as well as in pulling apart the joining flange members 10.12 when removal is required. , such separation requires considerable force and is accompanied by some difficulty in its completion. By the use of the inventive jack bolt, such a procedure is not only simplified but also made more effective. and requires fewer additional tools for the same task.Although any number of jack bolt assemblies A can be used in place of a regular bolt-and-nut arrangement, such assemblies are Preferably, they are evenly spaced around the periphery of the flange ring of item F. For example, if three jack bolt assemblies A are to be used, they are They should be spaced 120° apart around the flange assembly; if four are to be used, then such assemblies should be spaced 90° around the flange assembly F. should, etc.

The ability to provide sufficiently uniform and balanced separation forces exerted by the jack bolt assemblies A during spreading apart the joined flange members 10.12, as discussed more fully below. strengthen.

As shown in Figures 1B, 2B, and 3B, the jack bolt assembly A is such that the first threaded portion P is attached to the flange member 1.
Each inner radial flange ring surface 1 of 0.12
0d.

12d is screwed into a suitably formed threaded hole 10j made in the first flange member 10, together with the thrust member M disposed between the receiving portions 20 and 12d.
and a second threaded portion 22 is preferably attached to the flange assembly F such that it extends through a hole 12j formed in the second flange member 12. A suitable fastening member 24 is screwed into and received in the secondary threaded portion 22, and the first and second threaded portions 24 are fitted into the second threaded portion 22 under appropriate tightening of the fastening member 24. Allows for proper assembly of flange members 10.12. mosquito\
In the tightened configuration, the thrust member M is loosely disposed within the cavity formed by the inner radial flange ring surfaces 10d, 12d and the inner annular surfaces 10c, 12c. Tightening of the clamping member 24 thus results in a normal tightening of the flange member 10.12 for proper assembly operations. As a result, the jack bolt assembly A is in place with the flange assembly F and is ready for use whenever it is necessary to spread the first and second flange members 10.12 with respect to each other.

For example, in order to replace part 14, flange part 10.1
When it becomes necessary to separate the two, all normal bolt donut assemblies will be loosened. Thereafter, the tool 27 will be placed into engagement with the tool engaging end 26 of the jack bolt member J. By proper rotation of the jack bolt member J, the thrust member M is opened at the threaded portion 16.
contacting the radial engagement surface R adjacent the second end 16c of the thrust member M, thus forcing the thrust member M to the right as seen in FIGS. 1-3. As a result of continuous rotation of the jack bolt member J by the tool engaging the tool engaging end 26, the thrust member M engages the inner radial flange ring surface 12d (FIGS. 2 and 3) of the second flange member 12. engage, where there is full contact between them. As a result of continued rotation, thrust member M moves to the right as seen in FIGS. 1-3 to exert a separating force on second flange member 12 with respect to first flange member 10. to separate the second flange member 12 from the first member 10 such that continued rotation of the threaded portion 16 with respect to the threaded hole 10j results in jacking the flange members 10.12 apart; The thrust member M continuously acts on the second member 12 through the thrust member M due to the action between the engaging surface 18 in the radial direction of the jack bolt upper member J acting on the thrust member M. There is a load. Of course, as multiple jack bolt assemblies A are used to jack apart the flange assembly F, local jacking forces are required to ensure proper alignment of the flange members 10.12. It is necessary that there be considerable uniformity in the application of the jacking force so that it is applied more or less equally by all jack bolt assemblies A.

As shown in FIGS. 2 and 3, the storage portion 20 and the secondary threaded portion 22 are not used for pulling-off operations, but are used to enhance ease of use during normal tightening operations. It is sometimes preferable to make it with a diameter slightly less than that of the hole 12j so that it can perform the function of a normal, commonplace bolt.

In addition, the difference in diameter between the thrust member housing element and the hole 12j, if required, is determined by the insulation means 32 (FIG. 1).
enable the use of

If an insulating means 32 is used, its sleeve 32
e indicates the mounting member 24 and thrust member M that act on the washer 34 when the flange is assembled (FIG. 1B).
It should be noted that the dimensions can be such that there are no compressive loads within the sleeve 32e due to the action of the sleeve 32e. If this condition is satisfied, then during a jacking or disconnection operation, the entire jack bolt assembly A is rotated about the threaded hole 10j formed in the first flange member 10 so that the sleeve 32e It will not be damaged. In this way, when it is desirable that all of the tightening and loosening work be accomplished using the tool 2T of the same size, the jack bolt assembly A is designed such that the tool 27 rotates not only the driving member 26e but also the tightening member 24. It should be noted that the drive member 26c of the tool-engaging end 26 can be included to allow for
Figure 4).

Thus, the jack bolt assembly A of the present invention has a hole in the existing flange (i.e., hole 10j) such that the hole in the flange compatibly accommodates the initially threaded portion P of the jack bolt member J. ) will be appreciated to be adapted to be used with any existing flange by simply threading. In most cases, the jack bolt assembly of the present invention can be reinstalled onto an existing flange without disrupting operations or causing an outage. As described above, the uninvented jack bolt assembly A is
It can be used not only to clamp the first and second flange members 10.12 of the flange assembly F together, but also to support, align, and pull the combined flange members 10.12 apart. have a dual purpose. Typically, the flange member 10.12 displaces either axially or radially, or otherwise has potentially dangerous shearing forces that can pose a hazard to personnel when disassembled. It is not uncommon for it to deviate. However, the jack bolt assembly A of the present invention allows loosening or tightening operations to be carried out easily and safely without endangering the operation due to shearing forces.

Additional locking members, such as locking nuts 37 (FIG. 2B), may be used to further tighten and tighten the flange assembly F and jack bolt member J in the tightened position, if desired. threadedly engaged with that portion of the first threaded portion P extending outwardly beyond the first flange member 10 to engage the outer radial flange ring surface 10f of the flange member 10; You can prepare to do so. Furthermore, the thrust member M may be
It is located between the flange members 10, 12 such that they are easily accessible for their lubrication during the disassembly operation. If additional lubrication is deemed necessary for the threaded joint action between the first threaded portion P and the threaded hole 10j of the first flange member 10, the lubricating fitting 38 (first Suitable lubrication holes 36 leading to Figure 1) can be used to receive additional lubricant, if desired.

Thus, the jack bolt assembly A of the present invention can not only be used to tighten together the flange members 10.12 of the flange assembly F, but also the flange members 10.12 of the flange assembly F to which they are connected upon disassembly. 12 provides a new and improved device which can also be used for effective separation, alignment and support.

The foregoing disclosure and description of the invention has been illustrative and explanatory thereof, and therefore various changes in size, shape, materials as well as details of the illustrated construction may be made without departing from the spirit of the invention. will be done.

[Brief explanation of the drawing]

FIG. 1A is a cross-sectional elevational view showing the flange assembly being separated by use of the jack bolt assembly of the first embodiment of the invention; FIG. 1B is a cross-sectional elevational view showing the flange members of the flange assembly being pulled together FIG. 2A is a cross-sectional elevational view similar to FIG. 1A showing the jack bolt assembly of FIG. 1A when used in tightening; FIG. 2A is a second implementation of the jack bolt assembly of the present invention; 1A depicting separated flange members of the flange assembly using the example.
Figure 2B is a cross-sectional elevation view similar to that shown in Figure 1B; Figure 2B shows the jack bolt assembly of Figure 2A when used in tightening together the flange members of the flange assembly; Figure 1B; FIG. 3A is a cross-sectional elevation view similar to FIGS. 1A and 2A showing the flange assembly being pulled apart by use of the jack bolt assembly of a third embodiment of the present invention; FIG. , discloses a cross-sectional elevation view; FIG. 3B is a cross-sectional elevation view similar to FIGS. 1B and 2B showing the jack bolt assembly of FIG. 3A for tightening the flange members of the flange assembly together; and FIG. 4 shows an elevation, partial cross-sectional view of an alternative embodiment of the jack bolt member of the jack bolt assembly of the present invention. Explanation of symbols for main parts A: Jack bolt assembly, F: Flange assembly, jack bolt member, P: First threaded part, R;
radial engagement surface, T; thrust member storage portion, M; thrust member, 10, 12; first and second flange members;
10b, 12b: radial coupling surface, 10m. 12a; holes in first and second flange members, 10c, 12
c; inner annular surface, 10d, 12d: radial flange ring surface, 10f, 12r: outer radial flange ring surface, 10j. 12j; Hole of flange member, 16; Threaded part,
16b, 16c: first and second ends, 18; radial surface, 22; secondary threaded portion, 22a: thread, 2
4; Tightening member, 26; Tool engaging end, 27; Tool, 2
6b: stepped threaded section, 26e; end surface;
26c; Drive member, 28 Nilast washer, 28b
lO: radial surface, 28 d: i-shaped surface, 30; thrust bearing, 30e, f: radial surface, 32; insulation means, 32a; hole, 32b; outer annular surface, 32c*3
2d: end flange, 32e; sleeve, 34; washer, 36; lubrication hole, 38; lubrication fitting.

Claims (1)

[Claims] 1. A jack bolt assembly for separating first and second members of a flange assembly that is fastened in a disassembly manner, the flange assembly having a plurality of bolts formed on the first and second members. In a jack bolt assembly formed with aligned holes: a jack bolt member adapted to extend between first and second flange members of the flange assembly; is longitudinally extending and has a generally rod-like shape, and has an initial thread for screwing into and engaging at least one of the holes formed in the first flange member; a radial engagement surface formed adjacent to a threaded portion, said radial engagement surface extending radially inwardly from said first threaded portion; a thrust member storage portion formed adjacent to the first threaded portion and the radial engagement surface, the thrust member storage portion being axially adjacent to the threaded portion; a thrust member housing portion adapted to be aligned with and extend partially into an aligned hole formed in a second flange member of the flange assembly; and movably attached to the thrust member housing portion; a thrust member adapted to be disposed between the first and second flanges of the flange assembly, the thrust member being subjected to an initial rotation of the first threaded portion; said radial engagement surface contacts a second flange member, and the engagement of said thrust member and second flange member is caused by continued rotation of said first threaded portion to assemble said flange assembly. A thrust member for separating first and second flange members of the jack bolt assembly. 2. The jack bolt assembly according to claim 1, wherein the thrust member includes a thrust washer. 3. The jack bolt assembly according to claim 1, wherein the thrust member includes a thrust bearing. 4. The jack bolt assembly according to claim 1 further includes: optionally formed in and axially connected to said first threaded portion to greatly facilitate rotation of said jack bolt member. A jack bolt assembly comprising a tool engaging end that is aligned in a direction. 5. In the jack bolt assembly according to claim 4: The tool engaging end is engaged with the tool engaging end to be used as a tool for rotating the jack bolt member. A jack bolt assembly characterized by being formed into a compatible shape. 6. The jack bolt assembly of claim 4, wherein said tool engaging end: has a step formed adjacent to and axially aligned with said first threaded portion; A jack bolt assembly comprising: a threaded portion; and a drive member threadedly attached to the stepped threaded portion to increase the ease of rotation of the jack bolt member. 7. The jack bolt assembly according to claim 1, further comprising: a second flange member formed adjacent to the thrust member storage portion and axially aligned therewith; A jack bolt assembly comprising a secondary threaded portion adapted to be disposed within a hole formed in the hole and further adapted to extend outwardly therefrom. 8. A jack bolt assembly according to claim 7, the assembly further: adapted for threaded engagement with the secondary threaded portion of the jack bolt member. a fastening member for tightening the second flange member and the first flange member of the flange assembly by receiving a screwing and tightening action between the fastening member and the second flange member; A jack bolt assembly comprising a tightening member contacting a second flange member of the flange assembly. 9. The jack bolt assembly according to claim 1, further comprising: the thrust member, the thrust member housing for insulating the first and second flange members from harmful electrical currents; A jack bolt assembly including means for insulating the section and a hole formed in a second flange member of the flange assembly. 10. In the jack bolt assembly according to claim 1: The first flange member of the flange assembly is adapted to screw in and receive the first threaded portion of the jack bolt member. A jack bolt assembly comprising a plurality of threaded holes.