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THRUST BOLT [6 records]

Record 1 2016-02-26

English

Subject field(s)
  • Mining Equipment and Tools
DEF

A bolt designed for use in roof bolting. It consists of a 3/4 in. diameter rod, at one end of which is a cold-rolled threaded portion, the other end being shaped to form a solid wedge forged integrally with the bolt. Over this wedge is fitted a loose split sleeve of 1-1/2 in. external diameter. The anchorage is provided by the bolt being placed in the hole and the bolt is pulled downwards while the sleeve is held by the thrust tube. Split by the wedge head of the bolt, the sleeve expands until it grips the sides of the hole.

Key term(s)
  • expansion-shell bolt
  • wedge and sleeve bolt
  • expansion sleeve bolt
  • expansion shell bolt

French

Domaine(s)
  • Outillage et équipement (Exploitation minière)
CONT

Boulons à coquilles d'expansion. Ils sont ainsi constitués [...] : 1) une tige de 17 à 22 mm, filetée à une extrémité ou aux deux extrémités; 2) sur cette tige, une noix pyramidale, vissée ou forgée; 3) autour de cette noix, une coquille en plusieurs éléments, cylindrique extérieurement, pyramidale intérieurement. L'ancrage [...] se fait en boulonnant l'extrémité de la tige, côté galerie, ce qui l'abaisse de quelques cm; la noix baisse avec elle et la coquille s'ouvre et se serre de plus en plus contre les parois.

Spanish

Save record 1

Record 2 2016-02-25

English

Subject field(s)
  • Pest Control Equipment
  • Tillage Operations (Agriculture)
  • Mechanical Construction
CONT

Side thrust tends to push the discs to the left(...). This force is opposed by the pull of the tractor and the wheels of the discer. The side thrust forces act at the bottom of the discs and are resisted at the center of the discs through the gang bolt(...).

French

Domaine(s)
  • Matériel de protection des végétaux
  • Travaux du sol (Agriculture)
  • Construction mécanique
CONT

La poussée latérale tend à pousser la machine vers la gauche (...). Cette force est opposée par la force de traction et par les roues-guides [de la charrue à disques]. Les poussées latérales agissent sur la bas des disques et sont opposées, au centre des disques, par la butée d'arrêt du train de disques (...).

Spanish

Save record 2

Record 3 2010-03-12

English

Subject field(s)
  • Launching and Space Maneuvering
  • Spacecraft
DEF

The velocity at which a space vehicle is moving when some part or section is separated from it.

CONT

When the spin table rpm has been verified and the proper point in the parking orbit has been reached, redundant, debris-free, explosive bolt cutters are fired upon command from the electrical ASE(airborne support equipment) to separate the band clamp(which is mechanically retained on the spin table), and the springs provide the thrust to attain a separation velocity of approximately 3 feet per second.

French

Domaine(s)
  • Lancement et manœuvres dans l'espace
  • Engins spatiaux
CONT

Ces deux parties sont reliées par un dispositif pyrotechnique et des ressorts montés à l'intérieur de la partie inférieure pour imprimer une vitesse de séparation à la partie supérieure.

Spanish

Save record 3

Record 4 2002-09-09

English

Subject field(s)
  • Closing Devices and Nozzles (Mechanical Components)
CONT

The strain-gaged bolt process(SGBP) for the direct measurement of valve-stem thrust provides valve owners with a simple, cost-effective means of solving their valve problems. The SGBP was developed at the Paducah Gaseous Diffusion Plant(PGDP) to facilitate the setup, maintenance, and monitoring of the plant's motor-operated valves.

French

Domaine(s)
  • Obturateurs et buses (Composants mécaniques)

Spanish

Save record 4

Record 5 1995-10-26

English

Subject field(s)
  • National Bodies and Committees (Non-Canadian)
OBS

The strain-gaged bolt process(SGBP)... was developed at the Paducah Gaseous Diffusion Plant(PGDP) to facilitate the setup, maintenance, and monitoring of the plant's motor-operated valves. Normally, the SGBP can be applied to test any make of valve or actuator, and available accessories permit the stem thrust of any rising stem valve to be measured without closing the valve and disrupting the flow.

French

Domaine(s)
  • Organismes et comités nationaux non canadiens
OBS

Information trouvée dans AMICUS.

Spanish

Save record 5

Record 6 1980-02-26

English

Subject field(s)
  • Mining Equipment and Tools
CONT

Resin Anchored Bolts.(...) It has been found that the use of resins will increase significantly the holding ability of expansion anchors. Two types of resin packages are available. In one type, the resin and catalyst are at opposite ends of a plastic envelope separated by a clip. The clip is removed and the package kneaded to mix the components. Then the package is thrust up the hole and a bolt with a mechanical anchor is inserted; in tightening the package will burst and the resin will ooze around the anchor. The other type is a glass capsule where resin and quartz granulars are contained in an outer glass capsule and the catalyst is in an inner tube.(...) Bolt ends need no threading for this anchorage.

Key term(s)
  • resin anchored roof bolt
  • resin anchored rock bolt

French

Domaine(s)
  • Outillage et équipement (Exploitation minière)
CONT

De plus en plus, au lieu du boulon ancré au fond du trou, on utilise les "boulons à la résine", dont la tige est soudée au terrain sur toute sa longueur par une résine synthétique. Une cartouche en matière plastique renfermant, séparés, la résine sirupeuse et le réactif de polymérisation est introduite dans le trou, puis on y enfile la tige du boulon, qui déchire les enveloppes; la résine se répand dans le trou, mêlée au réactif, et, en quelques secondes, elle fait prise; l'écrou vissé à l'extrémité de la tige et la plaque d'appui deviennent inutiles, sauf s'il faut maintenir un grillage.

Spanish

Save record 6

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