SE461587B - Safety gear - Google Patents

Safety gear

Info

Publication number
SE461587B
SE461587B SE8605292A SE8605292A SE461587B SE 461587 B SE461587 B SE 461587B SE 8605292 A SE8605292 A SE 8605292A SE 8605292 A SE8605292 A SE 8605292A SE 461587 B SE461587 B SE 461587B
Authority
SE
Sweden
Prior art keywords
piston
chain drive
stop
rotation
centrifugal force
Prior art date
Application number
SE8605292A
Other languages
Swedish (sv)
Other versions
SE8605292D0 (en
SE8605292L (en
Inventor
R Sundstroem
G Sundstroem
Original Assignee
Motala Portautomatik Broederna
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 Motala Portautomatik Broederna filed Critical Motala Portautomatik Broederna
Priority to SE8605292A priority Critical patent/SE461587B/en
Publication of SE8605292D0 publication Critical patent/SE8605292D0/en
Priority to FI875384A priority patent/FI85844C/en
Priority to NO875124A priority patent/NO165831C/en
Priority to DK198706476A priority patent/DK174914B1/en
Publication of SE8605292L publication Critical patent/SE8605292L/en
Publication of SE461587B publication Critical patent/SE461587B/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
    • B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
    • B66B5/04—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions for detecting excessive speed
    • B66B5/044—Mechanical overspeed governors

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Load-Engaging Elements For Cranes (AREA)
  • Transmission Devices (AREA)
  • Actuator (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
  • Flow Control (AREA)

Abstract

The safety gear is constituted by a sleeve 1 which is fitted to a chain drive 2 coaxially herewith. The tubular sleeve has diametrical recesses 3 in which a piston 4 is displaceable to and fro. It is nevertheless detained in the groove by means of a bolt 6 which is screwed into the piston. The chain drive 2 is fitted vertically so that when the pinion gear rotates upon movement of the lift, for example, the piston 4 joins in the rotation but falls throughout under gravitational effect to assume its lowermost position. This applies as long as the chain drive moves at a moderate speed. Should the speed be increased, then the centrifugal force acting upon the piston will detain this in its projecting position so that it hits against the stop 7 which is arranged over the chain drive. <IMAGE>

Description

461 587 10 15 gäller så länge som lædjmhevet rör sig med en måttlig hastig- het. Skulle hastigheten ökas så kommer centrifugalkraften på kolven att hålla kvar denna i dess utskjutande läge, dvs det som visas í fig 1 även när kolven når upp till det stopp 7 som finns anordnat över kedjedrevet. 461 587 10 15 applies as long as the leather lever moves at a moderate speed. Should the speed be increased, the centrifugal force on the piston will keep it in its projecting position, ie what is shown in Fig. 1 even when the piston reaches the stop 7 which is arranged over the sprocket.

Praktiska försök har visat att fânganordningen enligt det ovanstående utföringsexemplet reagerar så snabbt att kuggdrcvet stoppas inom ett halvt varv. ldet visade fallet har stoppet placerats på ett sådant sätt att det endast stoppar för snabb rörese i en riktning. Om så önskas kan naturligvis stoppet placeras symmetriskt så att det stoppar såväl för för snabb rotation medurs som moturs.Practical tests have shown that the catching device according to the above embodiment reacts so quickly that the gear drive is stopped within half a turn. In the case shown, the stop has been placed in such a way that it only stops for rapid movement in one direction. If desired, the stop can of course be placed symmetrically so that it stops for both rapid rotation clockwise and counterclockwise.

Efter åtgärdande av de fel som tvingat fânganordningen att blockera kan denna åter igen lätt frigöras genom rörelse i mot- satt riktníng uuefterden omedelbart återigen träder i funktion. inom ramen för uppfinningstanken kan man även tänka sig andra lnfonmángar av kolven, exempelvis kan den utgöras av ett kors.After rectifying the faults that forced the capture device to block, it can again be easily released by movement in the opposite direction, after which it immediately returns to operation. within the scope of the inventive concept, other means of the piston can also be envisaged, for example it may consist of a cross.

Fånganordningen är lämpligen intergrerad direkt med lin- trumma eller kedjehjul för den bärande kedjan.The catch device is suitably integrated directly with the line drum or sprocket for the supporting chain.

Claims (3)

461 587 P a t e n t k r a v461 587 P a t e n t k r a v 1. Fànganordning, kânnetecknad av att den innefattar en första roterbar medbringardel (1) och en andra till den första delen vridningskopplad del (4) som likaså är roterbar, och ut- göres av en diametralt sig sträckande och rörlig kolv, varvid kopplingen är sådan att den innefattar ett radiellt spel mellan delarna medgivande en inbördes excentrícitet vid rotation, var- vid kolven är förspänd bort från ett fast anordnat stopp (7) så att vid långsam rotation säkerställer förspänningen att kol- ven (4) ej kommer i kontakt med stoppet (7) under det att vid rotation över en viss hastighet förspänningen övervinnes av centrifugalkraften och/eller masströgheten för kolvdelen (4) som därigenom kommer i kontakt med stoppet (7).Capturing device, characterized in that it comprises a first rotatable carrier part (1) and a second part (4) rotatably coupled to the first part, which is also rotatable, and consists of a diametrically extending and movable piston, the coupling being such that it comprises a radial play between the parts allowing a mutual eccentricity during rotation, the piston being biased away from a fixedly arranged stop (7) so that during slow rotation the bias ensures that the piston (4) does not come into contact with the stop (7) while on rotation over a certain speed the bias is overcome by the centrifugal force and / or the mass inertia of the piston part (4) which thereby comes into contact with the stop (7). 2. Fànganordning enligt krav 1, kännetecknad av att kolven är fixerad till ett rörelseomràde mellan två ändlägen med hjälp av en skruv (6) insatt i kolvens (4) mitt och kolven är lagrad i motsvarande diametralt motsatta öppningar (3) i en cylinder (1) varvid skruven slår emot innerväggarna i sina ytterlägen.Capturing device according to claim 1, characterized in that the piston is fixed to a range of movement between two end positions by means of a screw (6) inserted in the middle of the piston (4) and the piston is mounted in corresponding diametrically opposite openings (3) in a cylinder ( 1) whereby the screw strikes the inner walls in their outer positions. 3. Fànganordning enligt nagot av föregående krav, känne- tecknad av att förspänningen àstadkommes med hjälp av tyngd- kraften.Capture device according to one of the preceding claims, characterized in that the prestress is achieved by means of gravity.
SE8605292A 1986-12-10 1986-12-10 Safety gear SE461587B (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
SE8605292A SE461587B (en) 1986-12-10 1986-12-10 Safety gear
FI875384A FI85844C (en) 1986-12-10 1987-12-07 Catch safety device
NO875124A NO165831C (en) 1986-12-10 1987-12-08 Interception system.
DK198706476A DK174914B1 (en) 1986-12-10 1987-12-09 Capture mechanism for lifts and lifting devices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE8605292A SE461587B (en) 1986-12-10 1986-12-10 Safety gear

Publications (3)

Publication Number Publication Date
SE8605292D0 SE8605292D0 (en) 1986-12-10
SE8605292L SE8605292L (en) 1988-06-11
SE461587B true SE461587B (en) 1990-03-05

Family

ID=20366574

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8605292A SE461587B (en) 1986-12-10 1986-12-10 Safety gear

Country Status (4)

Country Link
DK (1) DK174914B1 (en)
FI (1) FI85844C (en)
NO (1) NO165831C (en)
SE (1) SE461587B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994022756A1 (en) * 1993-04-04 1994-10-13 Stig Ottosson Method to ensure an actuation of a locking mechanism

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115075537B (en) * 2022-07-08 2024-02-02 中国水利水电第三工程局有限公司 Anti-falling device of lifting type construction platform

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994022756A1 (en) * 1993-04-04 1994-10-13 Stig Ottosson Method to ensure an actuation of a locking mechanism

Also Published As

Publication number Publication date
NO875124D0 (en) 1987-12-08
FI85844B (en) 1992-02-28
FI85844C (en) 1992-06-10
DK647687D0 (en) 1987-12-09
DK174914B1 (en) 2004-02-16
NO165831B (en) 1991-01-07
SE8605292D0 (en) 1986-12-10
DK647687A (en) 1988-06-11
NO875124L (en) 1988-06-13
NO165831C (en) 1991-04-17
SE8605292L (en) 1988-06-11
FI875384A0 (en) 1987-12-07
FI875384A (en) 1988-06-11

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