US3819880A - Power connecting apparatus for movable members - Google Patents

Power connecting apparatus for movable members Download PDF

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Publication number
US3819880A
US3819880A US00384465A US38446573A US3819880A US 3819880 A US3819880 A US 3819880A US 00384465 A US00384465 A US 00384465A US 38446573 A US38446573 A US 38446573A US 3819880 A US3819880 A US 3819880A
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US
United States
Prior art keywords
carriage
helix
rod
knob
components
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US00384465A
Other languages
English (en)
Inventor
P Johnston
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Babcock and Wilcox Co
Original Assignee
Diamond Power Speciality
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Diamond Power Speciality filed Critical Diamond Power Speciality
Priority to US00384465A priority Critical patent/US3819880A/en
Priority to CA193,823A priority patent/CA1004652A/en
Priority to SE7402893A priority patent/SE401063B/xx
Priority to IN501/CAL/74A priority patent/IN140555B/en
Priority to AU66420/74A priority patent/AU477680B2/en
Priority to IT49239/74A priority patent/IT1011079B/it
Priority to BE141974A priority patent/BE812261A/xx
Priority to NL747403388A priority patent/NL155138B/xx
Priority to DE2412188A priority patent/DE2412188C3/de
Priority to GB1151674A priority patent/GB1457813A/en
Priority to JP49032463A priority patent/JPS5144245B2/ja
Priority to FR7410630A priority patent/FR2239786B1/fr
Priority to SU742018290A priority patent/SU651734A3/ru
Priority to BR4433/74A priority patent/BR7404433A/pt
Application granted granted Critical
Publication of US3819880A publication Critical patent/US3819880A/en
Assigned to BABCOCK & WILCOX COMPANY THE, A CORP. OF NJ. reassignment BABCOCK & WILCOX COMPANY THE, A CORP. OF NJ. MERGER (SEE DOCUMENT FOR DETAILS). EFFECTIVE DATE:03/31/78 A CORP. OF NJ. Assignors: DIAMOND POWER SPECIALTY CORPORATION
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
    • F28G15/00—Details
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G11/00—Arrangements of electric cables or lines between relatively-movable parts
    • H02G11/003—Arrangements of electric cables or lines between relatively-movable parts using gravity-loaded or spring-loaded loop
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/6851—With casing, support, protector or static constructional installations
    • Y10T137/6918—With hose storage or retrieval means

Definitions

  • ABSTRACT A helically coiled flexible electrical conductor extensible and retractable axially to provide electrical connection to a movable element is slidably supported by a rod which extends through it, one end of the coil being fixed and the other end movable.
  • a tube slidably fitted on the rod extends from the movable end through convolutions of the coil and is movable with the movable end of the coil.
  • a knob carried by the rear end of the tube controls the escape of convolutions from the tube during forward movement.
  • the present invention relates to conductors for providing a power conductive connection between relatively movable elements and has been developed in connection with work directed to overcoming problems which arise where a power connection must be provided to a movable motor such as is employed in long traveling soot blowers wherein the motor and a supporting carriage travel with a lance tube, the carriage', motor and lance tube being typically supported on tracks carried by a horizontal beam structure, the carriage being arranged to travel along the beam for distances which may be as great as 50 or 60 feet.
  • the motor may be either electric or air powered.
  • FIG. 1 is a fragmentary cross section of a portion of a known type of soot blower, illustrative of apparatus with which this invention is adapted to be usefully employed;
  • FIG. 2 is a longitudinal vertical elevational sectional view on a larger scale of the control asembly of power connection means constructed in accordance with the present invention, with an electric cable shown in section thereon;
  • FIG. 3 is a top plan view of the control assembly
  • FIG. 4 is a cross section taken substantially on the line IVIV of FIG. 2 and looking in the direction of the arrows;
  • FIG. 5 is a perspective view of a control assembly and cable installed on a soot blower carriage, the beam and other portions of the soot blower being omitted and broken away;
  • FIG. 6 is a diagrammatic side elevational view of a coiled cord power supply assembly constructed in accordance with the aforementioned application Ser. No. 340,1 l6, illustrating the binding efiect which occurs if such a system is employed at travels exceeding the practical operating range thereof;
  • FIG. 7 is a diagrammatic view similar to FIG. 6 illustrating the action which occurs during extension of the coil of apparatus constructed in accordance with the present invention
  • FIG. 8 is a rear end view of the soot blower with the rear wall, and some other parts unrelated to the present invention, omitted;
  • FIG. 9 is a view similar to FIG. 2 showing a modified control assembly.
  • soot blower fragmentarily shown in the drawing and generally designated 10 is presumed to be of the well-known IK long retracting type, comprising a main supporting beam in the general form of an inverted U-channel and which incorporates a carriage generally designated 22 rollably supported in the beam in a well known manner (and which is not illustrated).
  • Carriage 22 incorporates a motor 28 attached to and traveling with and as a part of the carriage assembly and which drives the carriage assembly and the lance tube 25 (fragmentarily illustrated axially and rotatively.
  • a soot blower of the indicated variety is fully disclosed in US. Pat. No. 3,439,376.
  • the motor 28 derives its power from a suitable source of electricity which is deliverable through conventional means (not shown) to the vicinity of the rear end wall 30 of the soot blower, where it is electrically connected to the fixedly secured end portion 31 of the helically coiled flexible conductor 32.
  • the end portion 31 is shown as secured to the beam near the wall 30 by a clip-like bracket 33.
  • the coiled conductor 32 is suspended upon a rod 35 formed of steel having a lowfriction covering such as nylon sheath. The rod is fastened at its rear end to the wall 30 and its forward end to a bracket 38 near the front or wallbox end of the blower assembly.
  • Actuating means for the movable free end of the coil comprises an arm 40 pivotally connected to the carriage assembly by a transverse pivot pin 42 extending through and carried by a bracket 44 attached to the carriage assembly.
  • the arm 40 is thus swingable in a vertical plane but travels longitudinally with the carriage.
  • Arm 40 is urged upwardly with respect to the At its forward end the arm 40 carries another transverse pivot pin 52 which extends into and is rockable in a slideblock 54.
  • the slideblock 54 is slidably overfitted on rod 35, containing a clearance hole 55 through which the rod 35 extends.
  • Block 54 is attached by means of machine screws 56 to the base flange 61 of control cone member 60.
  • the block 54 and control cone 60 correspond to the similar parts disclosed in the aforementioned prior application.
  • control cone is provided with around bottomed longitudinal groove 62 in its upper surface to accommodate the support rod 35.
  • a tubular extension sleeve 66 slidably overfitted on the support rod 35 and extending rearwardly from the cone, carrying at its rear end a knob 68.
  • the entire control assembly consisting of the slideblock 54, cone 60, extension tube 66, and knob 68 travels with the carriage.
  • the knob 68 resists escape of the convolutions, but it is so proportioned that the successive convolutions are pulled off relatively easily and with an amount of resistance which results in the convolutions becoming spaced relatively uniformly along the rod as they drop onto the rod during such forward movement.
  • the tendency of the knob to retain the convolutions on the moving control assembly prevents undue stretching of the cable and eliminates the drag resistance of the convolutions which remain on the control assembly during extensive movement, so that the tendency of the convolutions to constrict, at long extensions, to such an extent as to bind on the rod in the manner diagrammatically indicated in FIG. 6, is prevented.
  • the flexible four-conductor electric cord having a synthetic rubber cover has an outside diameter of approximately 0.63 inch. It is wound in a tight helix having an inside diameter of 2% inches, making a coil approximately 50 inches long when fully collapsed.
  • the outside diameter of the extension tube is 34 inch.
  • the knob 68 is formed of nylon impregnated with molybdenum disulphide and has a diameter of 1% inches.
  • the slideblock 54 is made of similar material. The length of the complete control assembly as shown in FIGS. 2 and 3 is 50% inches.
  • the proportions are such that the tendency of the successive convolutions to ride over the knob 68 is restrained sufficiently so that each convolution is released after the preceding one is a short distance from the knob, and the successive spacings are substantially uniform.
  • the proportioning of the knob to achieve this effect may vary somewhat with the composition of the insulating sheathing on the cable, but has not been found to be critical or difficult to achieve. In the proportions indicated, the system works well with a vertical wall, as indicated at 69, on the forward side of the knob.
  • the intermediate position of a convolution riding over the knob is shown at 72 in FIG. 2.
  • the rear'face of the knob is provided with a wall 74 which slopes at 45 to assist the convolutions to ride back over the knob and return to the sleeve during rearward movement and contraction of the helix.
  • the control cone 60 prevents the convolutions closest to the leading end of the cord, where attached to the base of the cone, from being twisted severely and overstressed when the cord is fully extended, in the manner disclosed in the aforemenioned prior application. It has been found, however, that if the required travel does not necessitate fully extending all of the convolutions, the control cone may be eliminated, and the controlling effect derived entirely from a sleeve and knob assembly directly attached to the block 54 by the securing flange 76 and comprising the elements 66, 68' shown in FIG. 9. Other parts of this embodiment are designated by corresponding reference characters primed, and will not require redescription.
  • soot blower construction may correspond to that disclosed in US. Pat. No. 3,439,376.
  • the entire carriage is rockable about a transverse axis at the position designated 75 in FIG. 1.
  • Such rocking is permitted by virtue of the fact that the entire carriage assembly is supported on trunnion rollers (not shown) located upon the axis 75.
  • trunnion rollers not shown located upon the axis 75.
  • thecarriage moves to its extreme forward position it is rocked counterclockwise, as viewed in FIG. 1, to tilt the attached end of the lance upwardly for the purpose of offsetting sag of the lance within the boiler.
  • the means for tilting the carriage in this manner is disclosed in the patent referred to and will not require redisclosure here.
  • pivotal connections are provided at the positions of the previously-mentioned towing pins 42, 52 so that, when the carriage rocks counterclockwise and its front end rises as is indicated in dot-dash lines in FIG. 2, the arm 40 and roller 50 are not overstressed and retain their same relationship to the top web of the beam.
  • the spring 45 at such time is stressed by the upward movement of the abutment 48, to accommodate such rocking of the carriage, while the spring maintains the roller in proper raised position at all times.
  • Means for providing power conductive communication between two components one of which is movable relative to the other including a helically coiled flexible member having one end fast with respect to one of said components and its other end fast with respect to the other component, whereby the helix is extended and contracted axially during movement of said components from and toward one another, and a rod extending through the helix to support said member, characterized by a sleeve attached to one of said components and slidably overfitted upon the rod within the helix, and a knob attached to the sleeve at a position spaced from the component to which the sleeve is attached, said knob being of a size to frictionally oppose but permit successive escape of convolutions of the flexible member during extension of the helix.
  • Means for providing power conductive communication between two components one of which is movable relatively to the other including a helically coiled flexible member having one end fast with respect to one of said components and its other end fast with respect to the other component, whereby the helix is extended and contracted axially during movement of said components from and toward one another, a rod extending through the helix to support said member, and a generally conic extension controlling member attached to one of said components and extending into and part way through the helix from one end, characterized by a sleeve secured with respect to said extension controlling member and extending an additional distance through said helix and slidably overfitted on the rod, and a knob attached to the sleeve at a position spaced from said extension controlling member, said knob being of a size to frictionally oppose but permit successive escape of convolutions of the flexible member during extension of the helix.
  • means for supplying power to the motor including a flexible conductor helically coiled about an axis extending longitudinally of the beam, a rod fixed to the beam and extending through and supporting the conductor, one end of the conductor being fixed to the beam and the other end fast with respect to the motor and carriage whereby movement of the carriage along the beam extends and contracts the helix, an extension controlling member at least partly surrounding thr rod and movable along the rod and beam with the carriage, said controlling member extending into the helix and having portions radially outspaced from the rod and engageable by portions of the conductor at a position spaced from said other end of the conductor to oppose relative axial movement between such engageable portions of the conductor and the carriage, characterized by means articulating the
  • Means as defined in claim 5 including biasing means yieldably urging the arm and roller upwardly against a longitudinal guiding portion on the beam.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Particle Accelerators (AREA)
  • Electric Cable Arrangement Between Relatively Moving Parts (AREA)
  • Storing, Repeated Paying-Out, And Re-Storing Of Elongated Articles (AREA)
  • Incineration Of Waste (AREA)
  • Surgical Instruments (AREA)
US00384465A 1973-08-01 1973-08-01 Power connecting apparatus for movable members Expired - Lifetime US3819880A (en)

Priority Applications (14)

Application Number Priority Date Filing Date Title
US00384465A US3819880A (en) 1973-08-01 1973-08-01 Power connecting apparatus for movable members
CA193,823A CA1004652A (en) 1973-08-01 1974-03-01 Power connecting apparatus for movable members
SE7402893A SE401063B (sv) 1973-08-01 1974-03-05 Anordning for kraftoverforande forbindelse mellan tva komponenter av vilka den ena er rorlig i forhallande till den andra
IN501/CAL/74A IN140555B (enrdf_load_stackoverflow) 1973-08-01 1974-03-07
AU66420/74A AU477680B2 (en) 1973-08-01 1974-03-07 Power connecting apparatus for movable members
IT49239/74A IT1011079B (it) 1973-08-01 1974-03-08 Apparato di accoppiamento di engergia per organi mobili
NL747403388A NL155138B (nl) 1973-08-01 1974-03-13 Inrichting met een door een flexibele verbindingsleiding verbonden loopgedeelte.
BE141974A BE812261A (fr) 1973-08-01 1974-03-13 Appareil de connexion de puissance pour organes mobiles
DE2412188A DE2412188C3 (de) 1973-08-01 1974-03-14 Leitungsvorrichtung mit einer schraubenlinienförmig gewundenen flexiblen Leitung
GB1151674A GB1457813A (en) 1973-08-01 1974-03-14 Power connecting support assembly for movable members
JP49032463A JPS5144245B2 (enrdf_load_stackoverflow) 1973-08-01 1974-03-22
FR7410630A FR2239786B1 (enrdf_load_stackoverflow) 1973-08-01 1974-03-27
SU742018290A SU651734A3 (ru) 1973-08-01 1974-04-15 Устройство дл гибкого соединени подвижного элемента с неподвижным
BR4433/74A BR7404433A (pt) 1973-08-01 1974-05-30 Dispositivo aperfeicoado para prever comunicacao condutiva de energia entre dois componentes e soprador de fuligem utilizando o mesmo

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00384465A US3819880A (en) 1973-08-01 1973-08-01 Power connecting apparatus for movable members

Publications (1)

Publication Number Publication Date
US3819880A true US3819880A (en) 1974-06-25

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ID=23517424

Family Applications (1)

Application Number Title Priority Date Filing Date
US00384465A Expired - Lifetime US3819880A (en) 1973-08-01 1973-08-01 Power connecting apparatus for movable members

Country Status (13)

Country Link
US (1) US3819880A (enrdf_load_stackoverflow)
JP (1) JPS5144245B2 (enrdf_load_stackoverflow)
BE (1) BE812261A (enrdf_load_stackoverflow)
BR (1) BR7404433A (enrdf_load_stackoverflow)
CA (1) CA1004652A (enrdf_load_stackoverflow)
DE (1) DE2412188C3 (enrdf_load_stackoverflow)
FR (1) FR2239786B1 (enrdf_load_stackoverflow)
GB (1) GB1457813A (enrdf_load_stackoverflow)
IN (1) IN140555B (enrdf_load_stackoverflow)
IT (1) IT1011079B (enrdf_load_stackoverflow)
NL (1) NL155138B (enrdf_load_stackoverflow)
SE (1) SE401063B (enrdf_load_stackoverflow)
SU (1) SU651734A3 (enrdf_load_stackoverflow)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3207836A1 (de) * 1981-04-20 1982-11-04 The Babcock & Wilcox Co., 70112 New Orleans, La. Russblaeser
US5167307A (en) * 1991-07-29 1992-12-01 The Babcock & Wilcox Company Floating cable loop control assembly
US5181591A (en) * 1990-10-04 1993-01-26 Comau Spa Arrangement for the electrical cables of an articulated robot arm
US20140034802A1 (en) * 2012-07-31 2014-02-06 Leslie Dale Robbins Motorized flat panel television track device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2118731A (en) * 1936-06-22 1938-05-24 Knott Helen Electric cord take-up
US2383031A (en) * 1943-10-25 1945-08-21 Lyle Alcumbrack Combined electric razor casing and cord support
US3439376A (en) * 1965-09-09 1969-04-22 Diamond Power Speciality Long retracting soot blower
US3608125A (en) * 1969-06-16 1971-09-28 Diamond Power Speciality Power supply for soot blowers

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2118731A (en) * 1936-06-22 1938-05-24 Knott Helen Electric cord take-up
US2383031A (en) * 1943-10-25 1945-08-21 Lyle Alcumbrack Combined electric razor casing and cord support
US3439376A (en) * 1965-09-09 1969-04-22 Diamond Power Speciality Long retracting soot blower
US3608125A (en) * 1969-06-16 1971-09-28 Diamond Power Speciality Power supply for soot blowers

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3207836A1 (de) * 1981-04-20 1982-11-04 The Babcock & Wilcox Co., 70112 New Orleans, La. Russblaeser
US5181591A (en) * 1990-10-04 1993-01-26 Comau Spa Arrangement for the electrical cables of an articulated robot arm
US5167307A (en) * 1991-07-29 1992-12-01 The Babcock & Wilcox Company Floating cable loop control assembly
US20140034802A1 (en) * 2012-07-31 2014-02-06 Leslie Dale Robbins Motorized flat panel television track device

Also Published As

Publication number Publication date
SU651734A3 (ru) 1979-03-05
JPS5144245B2 (enrdf_load_stackoverflow) 1976-11-27
FR2239786B1 (enrdf_load_stackoverflow) 1983-07-29
BR7404433A (pt) 1976-02-03
NL7403388A (nl) 1975-02-04
BE812261A (fr) 1974-07-01
DE2412188C3 (de) 1979-06-07
FR2239786A1 (enrdf_load_stackoverflow) 1975-02-28
DE2412188B2 (de) 1978-10-19
IT1011079B (it) 1977-01-20
IN140555B (enrdf_load_stackoverflow) 1976-11-27
JPS5037902A (enrdf_load_stackoverflow) 1975-04-09
GB1457813A (en) 1976-12-08
SE401063B (sv) 1978-04-17
DE2412188A1 (de) 1975-02-20
SE7402893L (enrdf_load_stackoverflow) 1975-02-03
AU6642074A (en) 1975-09-11
CA1004652A (en) 1977-02-01
NL155138B (nl) 1977-11-15

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Legal Events

Date Code Title Description
AS Assignment

Owner name: BABCOCK & WILCOX COMPANY THE, A CORP. OF NJ.

Free format text: MERGER;ASSIGNOR:DIAMOND POWER SPECIALTY CORPORATION;REEL/FRAME:003854/0861

Effective date: 19780331

Owner name: BABCOCK & WILCOX COMPANY THE, A CORP. OF NJ., NEW

Free format text: MERGER;ASSIGNOR:DIAMOND POWER SPECIALTY CORPORATION;REEL/FRAME:003854/0861

Effective date: 19780331