US3782673A - Connecting means between a support cap and a prop head - Google Patents

Connecting means between a support cap and a prop head Download PDF

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Publication number
US3782673A
US3782673A US00230604A US3782673DA US3782673A US 3782673 A US3782673 A US 3782673A US 00230604 A US00230604 A US 00230604A US 3782673D A US3782673D A US 3782673DA US 3782673 A US3782673 A US 3782673A
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United States
Prior art keywords
support
support cap
prop
cap
prop head
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Expired - Lifetime
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US00230604A
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D Wehrens
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Kloeckner Werke AG
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Kloeckner Werke AG
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    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D17/00—Caps for supporting mine roofs
    • E21D17/10—Details of mine caps for engaging the tops of pit-props, with or without retaining-plates; Retaining-plates
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
    • E21D15/50—Component parts or details of props
    • E21D15/54—Details of the ends of props

Definitions

  • ABSTRACT Means for establishing a connection between a support cap and a prop head for pit props of the type used in the mining industry comprising a bar or the like supporting an upper bed such as a hanging wall or roof of the mine, and the pit prop constituting a hydraulic cylinder with its ram, or prop head, bracing against the support cap, the connecting means comprising a pair of securing elements releasably fixed to the outer free end of the ram and releasably fixed to the support cap.
  • the support member projects into a hollow section of the support cap and its arms are fastened to the lower wall of the hollow section of the support cap.
  • a bolt disposed in a groove or bore of the support member is provided as a securing element.
  • the support member is constructed as a circular part extending around the axis of the prop.
  • the groove or bore provided for the insertion of the securing element is arranged in the longitudinal direction of the support.
  • the support members consist of two oppositely facing support elements arranged in the longitu dinal direction of the support cap.
  • each support element is releasably fastened to the lower wall of the support cap, whereas the upper part of each support element is hook-shaped and passes through an opening of the ball pan element fixed to the upper wall of the support cap.
  • each support element It is advantageous to have a groove with a securing element therein in the upper part of each support element. This simplifies the removal of props in case repairs are necessary so that first the lower part of each support element is loosened from the lower wall of the support cap and then the support elements are pivoted relative to the prop until the hook-shaped extensions of the upper part of the support elements are released from the ball pan element. The support elements can then be manually removed. The prop is then released, while the ram or interior prop is lowered together with the securing element while the support cap remains in a raised position, being so supported by adjacent props.
  • FIG. 1 is a longitudinal section along the central axis of the hollow section of a support cap
  • FIG. 2 is a cross section taken on the line IIII of FIG. 1, with the support element on the right side of the Figure not being sectioned.
  • a horizontally-disposed support cap 1 is in the form of a bar or the like having a hollow section with spaced parallel upper and lower walls.
  • a bell-shaped ball cap element 2 which extends between the upper and lower walls is fixed to the lower surface of the upper wall and is provided with a ball cup or recess 3 centrally of its downwardly facing upper I wall in which a prop head 4 of a ram 16 of a hydraulic cylinder or prop 5 is receivable, the ram passing through a provided opening in a lower wall 11 of the support cap.
  • the support cap 1 and prop head 4 are constructed for limiting pivoting movements relative to each other and any unintentional raising of the support cap is precluded.
  • a securing element 10 in the form of a pin or rod extends between a pair of support elements 6 releasably fastened to the lower wall 11 of the support cap 1, the securing element additionally passing through prop head 4.
  • the prop 5 and the cap 1 are connected by the two support elements 6 which are oppositely-facing in the longitudinal direction to the support cap 1.
  • An upper part 7 of each of these support elements 6 is hookshaped and has two laterally extending extensions 8 and 8' on each side of a groove 9 which passes between them and in which securing element 10 is disposed.
  • each securing element 6 passes through an opening 17 in the upper wall of the ball cap element 2 and the hook-shaped extensions 8 and 8' grip behind the ball cap element 2.
  • Support members 6 are each provided with a lower arm 15 which passes downwardly and outwardly through the opening in lower wall 11 of the support cap.
  • arms 15 are bent upwardly so as to be disposed immediately below and in parallel relation to lower wall 11 of the support cap.
  • Pairs of depending ears 12 are provided on lower wall 11 and are so disposed that the lower free ends of arms 15 pass therebetween.
  • a bolt or locking pin 14 which passes through aligned openings 13 in ears 12 below the lower free ends of arms 15 serves to clamp the support members 6 to the support cap.
  • the prop When the support elements are manually removed from the ball cap element, the prop can be released and the interior prop 16 and securing element lowered, while the support cap remains in a raised position being supported by adjacent props.
  • Means for establishing a connection between a support cap of the type including a hollow section having upper and lower walls and a prop head for a pit prop comprising: a pair of support members, a securing element fixing the support members to the prop head, and each support member including adjacent its upper end a pair of hook-shaped portions and lateral extensions disposed one on each side of a longitudinal groove and releasably engageable with the support cap, the support members projecting into the hollow section of the support cap with arms extending below the lower wall of the support cap.
  • Means for establishing a connection according to claim 1, with the scecuring element comprising a pin passing through the prop head and disposed in the grooves of the support members.

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
  • Snaps, Bayonet Connections, Set Pins, And Snap Rings (AREA)
  • Bridges Or Land Bridges (AREA)
  • Insertion Pins And Rivets (AREA)

Abstract

Means for establishing a connection between a support cap and a prop head for pit props of the type used in the mining industry, the support cap comprising a bar or the like supporting an upper bed such as a hanging wall or roof of the mine, and the pit prop constituting a hydraulic cylinder with its ram, or prop head, bracing against the support cap, the connecting means comprising a pair of securing elements releasably fixed to the outer free end of the ram and releasably fixed to the support cap.

Description

United States Patent Wehrens Jan. 1, 1974 CONNECTING MEANS BETWEEN A SUPPORT CAP AND A PROP HEAD [75] Inventor: Diethard Wehrens, Sythen, Germany [73] Assignee: Klockner-Werke Aktiengesellschaft,
Duisburg, Germany [22] Filed: Mar. 1, 1972 [21] Appl. No.: 230,604
[30] Foreign Application Priority Data Mar. 5, I97! Germany P 21 10 497.2
[52] U.S. Cl. 248/357 [51] Int. Cl E2ld 15/00 [58] Field of Search 248/48, 357
[56] References Cited UNITED STATES PATENTS 926,638 6/1909 Barton 248/48 3,722,846 3/1973 Albrecht 248/357 Primary ExaminerWilliam H. Schultz Attorney-Kenwood Ross et a1.
[57] ABSTRACT Means for establishing a connection between a support cap and a prop head for pit props of the type used in the mining industry, the support cap comprising a bar or the like supporting an upper bed such as a hanging wall or roof of the mine, and the pit prop constituting a hydraulic cylinder with its ram, or prop head, bracing against the support cap, the connecting means comprising a pair of securing elements releasably fixed to the outer free end of the ram and releasably fixed to the support cap.
2 Claims, 2 Drawing Figures CONNECTING MEANS BETWEEN A SUPPORT CAP AND A PROP HEAD Said copending application discloses a connecting means between a support cap and a prop head for pit props, which allows a limited pivoting of the support cap and the prop head relative to each other as well as precluding a raising off of the support cap, with the securing element projecting into at least one support member releasably fastened to the support cap.
The support member projects into a hollow section of the support cap and its arms are fastened to the lower wall of the hollow section of the support cap. A bolt disposed in a groove or bore of the support member is provided as a securing element. The support member is constructed as a circular part extending around the axis of the prop. The groove or bore provided for the insertion of the securing element is arranged in the longitudinal direction of the support.
It is an object of this invention to connect the support cap with a prop head for pit props so that it is possible to replace the securing element easily.
Herein, the support members consist of two oppositely facing support elements arranged in the longitu dinal direction of the support cap.
Thus, a connecting means is obtained between a support cap and a prop head for pit props fully accomplishing the before mentioned objects of this invention. In addition, the removal of props is facilitated without risk of damage to the other props in case repairs are necessary.
Furthermore, the invention is characterized by the fact that the lower part of each support element is releasably fastened to the lower wall of the support cap, whereas the upper part of each support element is hook-shaped and passes through an opening of the ball pan element fixed to the upper wall of the support cap.
It is advantageous to have a groove with a securing element therein in the upper part of each support element. This simplifies the removal of props in case repairs are necessary so that first the lower part of each support element is loosened from the lower wall of the support cap and then the support elements are pivoted relative to the prop until the hook-shaped extensions of the upper part of the support elements are released from the ball pan element. The support elements can then be manually removed. The prop is then released, while the ram or interior prop is lowered together with the securing element while the support cap remains in a raised position, being so supported by adjacent props.
The invention is described with reference to the accompanying drawings; however, the drawings only show one manner of practicing the invention. Various other forms of the invention are possible.
In the drawings:
FIG. 1 is a longitudinal section along the central axis of the hollow section of a support cap; and
FIG. 2 is a cross section taken on the line IIII of FIG. 1, with the support element on the right side of the Figure not being sectioned.
A horizontally-disposed support cap 1 is in the form of a bar or the like having a hollow section with spaced parallel upper and lower walls.
A bell-shaped ball cap element 2, which extends between the upper and lower walls is fixed to the lower surface of the upper wall and is provided with a ball cup or recess 3 centrally of its downwardly facing upper I wall in which a prop head 4 of a ram 16 of a hydraulic cylinder or prop 5 is receivable, the ram passing through a provided opening in a lower wall 11 of the support cap.
The support cap 1 and prop head 4 are constructed for limiting pivoting movements relative to each other and any unintentional raising of the support cap is precluded. A securing element 10 in the form of a pin or rod extends between a pair of support elements 6 releasably fastened to the lower wall 11 of the support cap 1, the securing element additionally passing through prop head 4.
The prop 5 and the cap 1 are connected by the two support elements 6 which are oppositely-facing in the longitudinal direction to the support cap 1. An upper part 7 of each of these support elements 6 is hookshaped and has two laterally extending extensions 8 and 8' on each side of a groove 9 which passes between them and in which securing element 10 is disposed.
The upper part 7 of each securing element 6 passes through an opening 17 in the upper wall of the ball cap element 2 and the hook-shaped extensions 8 and 8' grip behind the ball cap element 2.
Support members 6 are each provided with a lower arm 15 which passes downwardly and outwardly through the opening in lower wall 11 of the support cap.
The lower free ends of arms 15 are bent upwardly so as to be disposed immediately below and in parallel relation to lower wall 11 of the support cap.
Pairs of depending ears 12 are provided on lower wall 11 and are so disposed that the lower free ends of arms 15 pass therebetween.
A bolt or locking pin 14 which passes through aligned openings 13 in ears 12 below the lower free ends of arms 15 serves to clamp the support members 6 to the support cap.
When the prop 5 is released, the ram or interior prop 16 descends, with the securing element 10 descending therewith, being supported in the grooves 9 of the support elements 6. The lateral extensions 8 and 8' pull the ball cap element 2 and the support cap 1 downwardly without placing any undue stress on the bolts 14.
If repairs are necessary, the bolts 14 are removed. Support elements are then swivelled toward prop 5 until the lateral extensions 8 and 8' clear ball cap element 2.
When the support elements are manually removed from the ball cap element, the prop can be released and the interior prop 16 and securing element lowered, while the support cap remains in a raised position being supported by adjacent props.
I claim:
1. Means for establishing a connection between a support cap of the type including a hollow section having upper and lower walls and a prop head for a pit prop comprising: a pair of support members, a securing element fixing the support members to the prop head, and each support member including adjacent its upper end a pair of hook-shaped portions and lateral extensions disposed one on each side of a longitudinal groove and releasably engageable with the support cap, the support members projecting into the hollow section of the support cap with arms extending below the lower wall of the support cap.
2. Means for establishing a connection according to claim 1, with the scecuring element comprising a pin passing through the prop head and disposed in the grooves of the support members.

Claims (2)

1. Means for establishing a connection between a support cap of the type including a hollow section having upper and lower walls and a prop head for a pit prop comprising: a pair of support members, a securing element fixing the support members to the prop head, and each support member including adjacent its upper end a pair of hook-shaped portions and lateral extensions disposed one on each side of a longitudinal groove and releasably engageable with the support cap, the support members projecting into the hollow section of the support cap with arms extending below the lower wall of the support cap.
2. Means for establishing a connection according to claim 1, with the securing element comprising a pin passing through the prop head and disposed in the grooves of the support members.
US00230604A 1971-03-05 1972-03-01 Connecting means between a support cap and a prop head Expired - Lifetime US3782673A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2110497A DE2110497B2 (en) 1971-03-05 1971-03-05 Cap holder for pit punches

Publications (1)

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US3782673A true US3782673A (en) 1974-01-01

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US (1) US3782673A (en)
DE (1) DE2110497B2 (en)
FR (1) FR2128583B2 (en)
GB (1) GB1364979A (en)
ZA (1) ZA718251B (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4004771A (en) * 1972-09-09 1977-01-25 Gewerkschaft Eisenhutte Westfalia Ball-and-socket type connections for use with mining apparatus
US4231672A (en) * 1978-06-29 1980-11-04 Charbonnages De France Heavy duty adjustable prop with a ball-and-socket joint
US4522000A (en) * 1981-05-04 1985-06-11 Barari Fred S Earthquake safety support for transportable building
CN102337909A (en) * 2010-07-16 2012-02-01 李泽宇 Socket

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2505925A1 (en) * 1981-05-12 1982-11-19 Alsace Mines Potasse MECHANICAL DEVICE FOR CONNECTING HEAD BETWEEN HEAD OR PEDESTAL HEAD AND PACKAGE OR HAT FOR HOLDING BATTERIES
GB2126640A (en) * 1982-09-09 1984-03-28 Evans & Sons Ltd C Drop-head support assembly with adjustable head-plate
GB2143272B (en) * 1983-07-14 1987-05-07 Scaffolding Improvements in or relating to scaffolding
DE102006055306B4 (en) * 2006-11-23 2010-10-07 Peri Gmbh Support head for slab formwork
CN109488351A (en) * 2018-09-29 2019-03-19 天地科技股份有限公司 A kind of adaptive top beam of advanced hydraulic support

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US926638A (en) * 1909-05-08 1909-06-29 Edmund Barton Toy tree-holder.
US3722846A (en) * 1970-02-11 1973-03-27 Kloeckner Werke Ag Connecting means

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US926638A (en) * 1909-05-08 1909-06-29 Edmund Barton Toy tree-holder.
US3722846A (en) * 1970-02-11 1973-03-27 Kloeckner Werke Ag Connecting means

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4004771A (en) * 1972-09-09 1977-01-25 Gewerkschaft Eisenhutte Westfalia Ball-and-socket type connections for use with mining apparatus
US4231672A (en) * 1978-06-29 1980-11-04 Charbonnages De France Heavy duty adjustable prop with a ball-and-socket joint
US4522000A (en) * 1981-05-04 1985-06-11 Barari Fred S Earthquake safety support for transportable building
CN102337909A (en) * 2010-07-16 2012-02-01 李泽宇 Socket
CN102337909B (en) * 2010-07-16 2015-03-25 李泽宇 Socket

Also Published As

Publication number Publication date
DE2110497B2 (en) 1973-11-22
FR2128583B2 (en) 1974-06-28
FR2128583A2 (en) 1972-10-20
DE2110497A1 (en) 1972-09-07
GB1364979A (en) 1974-08-29
ZA718251B (en) 1972-08-30

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