CN1067501A

CN1067501A - Magnetic arch measurer

Info

Publication number: CN1067501A
Application number: CN 91103812
Authority: CN
Inventors: 曾繁国; 肖常斌; 周万云; 曾涛
Original assignee: Individual
Current assignee: Individual
Priority date: 1991-06-01
Filing date: 1991-06-01
Publication date: 1992-12-30

Abstract

A kind of magnetic arch measurer of the present invention is to be applicable to the instrument of measuring mounted various overhead travelling crane main beam cambers, also can be used on all crossbeams of measuring any steel construction.It is will be reversed magnetic suction nozzle 1 that magnet steel rotor 2 that handle 6 pusher dogs stir constituted and deliver to the main beam lower bottom part and suck by being equipped with to use in housing 3 circular holes by the rising stem 12 of movable telescopic formula more piece hollow tube combination, observes the size of the main beam two ends of scale 13 on same level reference and mid point on its rope that hangs down 14 to calculate its mid point camber of acquisition by level meter.Do not need personnel to climb up crossbeam, measure work safety and accurately.

Description

Magnetic arch measurer

The present invention relates to a kind of magnetic arch measurer is to be applicable to the instrument of measuring overhead travelling crane main beam camber, also can be used on the camber of measuring all crossbeams in any steel construction.

In the prior art, the method for measurement overhead travelling crane main beam camber generally has four kinds: draw the steel wire mensuration; Level gage measurement method; Horizontal survey method and mark post mensuration.Wherein draw the steel wire mensuration the simplest, especially practical for manufacturing works, because of it is convenient to terrestrial operation, but inapplicable for the single-beam crane that is using; Level gage measurement method is used on bridge-type double beam crane and the gantry more, and very not suitable at the single-beam crane of bottom for trolley track; The horizontal survey method is that the water-head mensuration is measured accurate but practical hell to pay can not use for the single-beam crane in usefulness; The mark post mensuration only is applicable to single-beam crane, but because verticality is difficult to grasp so that error is bigger.For the crane that is using must its main beam of periodic inspection camber to guarantee the normal use of equipment, still the level gage measurement method that often uses must be climbed up on the overhead travelling crane crossbeam top by the checker at present, so that hand-held scale is fixed on two end points of crossbeam and the mid point and makes it sagging naturally, observe out three each scales of position at the represented height that goes out of same level reference by being supported on ground spirit-leveling instrument then, obtain the camber value of mid point by calculating.The critical defect of this kind method is to be absolutely unsafe, the height that all surpasses the work high above the ground standard of regulation because of the height of single-beam formula crane, work for inspection is that the short time mobile operational process can not be pricked securing band, the crossbeam narrower in width of most single-beam formula cranes only has 300 millimeter, and there is not guardrail, very dangerous during operation.Also some aerial beam can't get on just like the same reviewer of crossbeam of some steel construction at all, can't measure its camber substantially.

The purpose of this invention is to provide a kind of magnetic arch measurer, it uses rising stem the magnetic suction nozzle with magnetic to be delivered to the lower bottom part of main beam, treat that the magnetic suction nozzle holds its vertical line that has scale that hangs down naturally of back and can utilize level meter to measure its difference to calculate, to obtain the camber numerical value of main beam mid point.

The invention provides a kind of magnetic arch measurer, be to be applicable to the instrument of measuring overhead travelling crane main beam camber, it is characterized in that: it is made up of magnetic suction nozzle [1] and coupled rising stem [12] and the scale [13] that passes through the attached extension of rope [14] on the magnetic suction nozzle [1].Its magnetic suction nozzle [1] is by being equipped with the plane up and down at the middle housing [3] that is provided with the bright and clean manhole of inside surface of body, being contained in its external diameter that rotates contact in the housing [3] cooperates two ends to have with bright and clean circular hole internal diameter to make two plane-parallel magnet steel rotors [2] on parallel plane near cylindrical body and the lateral body, the inner is contained in the housing [3] it and rotates contact circle external diameter and cooperate wherein two pusher dogs to cooperate with both sides parallel plane on magnet steel rotor [2] cylinder with bright and clean circular hole internal diameter and the outer end circular cover is provided with handle with holes reverses handle [6], two ends are separately fixed at housing [3] and reverse torsionspring [5] on the handle [6], front end extend into and reverses rear end in handle [6] deep-slotted chip breaker and be fixed on the pin [8] on housing [3] the circular hole wall and be contained in the ring [7] that reverses in handle [6] the handle hole respectively and constitute with ring [9] on housing [3] lower plane, its housing [3] is to be had by two halves to process jointly after the material of good magnetic property and the two ends up and down of same diameter betwixt are bonded with the exhausted magnet [4] of non-magnet material, and the last area of plane on its body is greater than the area of lower plane; Its rising stem [12], it is to be made by thin-walled hollow tubing, be equipped with in the pipe that its upper end is connected the rope [14] that has scale [13] on the ring [9] and its lower end is fixed on the automatic winder [11] at the bottom of the bar, pipe is outer to be had its upper end of a stay cord [10] to be connected ring [7] upward to be connected on the automatic winder [11] of rising stem [12] near the bottom its lower end in addition; The available flexible socket joint type multitube hollow tube of its rising stem [12] constitutes, and also can adopt the folding section bar that connects to constitute.Its magnetic suction nozzle [1] also can use its top to be provided with big plane and the magnet steel or the electromagnet [17] that have the movable balls joint in the side is movably arranged on rising stem [12] top, wherein electromagnet [17] and be connected with the set electric switch in rising stem [12] bottom.

The present invention compared with prior art, it no longer needs the checker to climb up to be installed in can measure the camber that calculates the main beam mid point easily on the crane main beam of for example single-beam of and narrower in width that have very high apart from ground of the overhead travelling crane that uses on the factory building, and mensuration work is perfectly safe and is very accurate.Also can be in order to measure the aerial beam that people are difficult to climb and the camber of all crossbeams in other steel constructions.

Accompanying drawing:

Fig. 1, the total figure of magnetic arch measurer example one assembling.

Fig. 2, taste power arch measurer example one are surveyed shop drawing when encircleing.

Fig. 3, the total figure of magnetic arch measurer example two assemblings.

Fig. 4, magnetic arch measurer example two are surveyed shop drawing when encircleing.

Fig. 5, magnetic suction nozzle [1] assembling front elevation.

Fig. 6, magnetic suction nozzle [1] assembling side elevation.

Parts title in the figure:

1, magnetic suction nozzle 2, magnet steel rotor 3, housing 4, exhausted magnet 5, torsionspring 6, reverse handle 7, ring 8, pin 9, ring 10, stay cord 11, automatic winder 12, rising stem 13, scale 14, rope 15, spherojoint 16, plummet 17, electromagnet

Embodiment: make rising stem [12] with external diameter by each about 1200 thin-wall metal tube combination of length that φ 70 to φ 10 its diameters evenly successively decrease successively as shown in Figure 1, 2, upper and lower side at a socket of outermost respectively is equipped with the automatic winder [11] that a used spring steel plate in similar tape measure center is made, and is connected on the lower end of rope [14] of stay cord [10] and band scale [13].Lay the magnetic suction nozzle [1] that a utilization rope [14] shown in accompanying

drawing

5,6 connects its ring [9] at rising stem [12] top, it is that the magnet steel rotor [2] that two pusher dogs that reverse handle [6] that are made of plastics of installation are stirred in housing [3] circular hole constitutes.Housing [3] is all to have the iron and steel of good magnetic property and bond therebetween with symmetrical halves to accompany processing jointly behind the magnet [4] extremely as copper, aluminium, plastics etc. of non-magnet material, and the bright and clean slyness of its endoporus is convenient to magnet steel rotor [2] and is rotatablely moved flexibly.Torsionspring [5] two ends are separately fixed at housing [3] and reverse on the handle [6], should make magnet steel rotor [2] be on the basic horizontal position at ordinary times that is the handle that reverses handle [6] is in 45 ° the position of being inclined upwardly, and having magnetic state for magnetic suction nozzle [1] this moment.The ring [7] that reverses handle [6] connects stay cord [10] upper end, when pulling stay cord [10] makes 45 ° of handle declivities magnet steel rotor [2] be on the stand up position substantially that is magnetic suction nozzle [1] in no magnetic state.Unclamping stay cord [10] rear spring forces it to be rotated counterclockwise homing to continue to make suction nozzle to be in magnetic state is arranged.The magnetic suction nozzle [1] that can use rising stem [12] upwards to raise during measurement always to reach its top is gone up planar top by overhead travelling crane main beam bottom surface and till being sucked, fall the rope [14] that exposes band scale [13] in the hollow tubular that each hollow tubular of rising stem [12] top is retracted into bottommost, keep rope [14] to be in plumbness and scale [13] greatly about about 1.5 meters of distance ground level height, be that the flat instrument of available water is observed the scale size, raise after to be recorded, rising stem [12] withstands suction nozzle [1] pulling stay cord [10] makes magnetic suction nozzle [1] nonmagnetic and to break away from the main beam bottom surface be that transferable rising stem [12] is to carry out the mensuration of next position again.So on same reference plane, measure respectively height h1, the h2 at main beam two ends and main beam midpoint height h, utilize formula h-1/2 (h1+h2) can obtain the camber value of midpoint immediately, extremely safe and very accurate.

Two of embodiment: be shown on rising stem [12] top the movable rope [14] of magnet steel that a side has spherical movable joint [15] or electromagnet [17] being installed, a band scale [13] and plummet [16] being arranged in magnet steel and electromagnet [17] lower vertical as 3,4 in accompanying drawing.Its top of magnet steel and electromagnet [17] is equipped with bigger plane, in rising stem [12] bottom electric switch is housed, and is connected with electromagnet [17], and energising back electromagnet [17] has magnetic and can suck the main beam bottom surface, can break away from any time after the outage.Its using method is with example one, but must can remove or be withdrawn into virgin state by rising stem [12] after mensuration is finished, and the voltages below its power supply should adopt 50 volts when using electromagnet are with the assurance personal safety.

Claims

1, a kind of magnetic arch measurer is to be applicable to the instrument of measuring overhead travelling crane main beam camber, it is characterized in that: it is made up of magnetic suction nozzle [1] and coupled rising stem [12] and the scale [13] that passes through the attached extension of rope [14] on the magnetic suction nozzle [1].

2, arch measurer according to claim 1, it is characterized in that described magnetic suction nozzle [1] is by being equipped with the plane up and down at the middle housing [3] that is provided with the bright and clean manhole of inside surface of body, being contained in its external diameter that rotates contact in the housing [3] cooperates two ends to have with bright and clean circular hole internal diameter to make two plane-parallel magnet steel rotors [2] on parallel plane near cylindrical body and the lateral body, the inner is contained in the housing [3] it and rotates contact circle external diameter and cooperate wherein two pusher dogs to cooperate with both sides parallel surface on magnet steel rotor [2] cylinder with bright and clean circular hole internal diameter and the outer end circular cover is provided with handle with holes reverses handle [6], two ends are separately fixed at housing [3] and reverse torsionspring [5] on the handle [6], front end extend into and reverses rear end in handle [6] deep-slotted chip breaker and be fixed on the pin [8] on housing [3] the circular hole wall and be contained in the ring [7] that reverses in handle [6] the handle hole respectively and constitute with ring [9] on housing [3] lower plane, its housing [3] is to be had by two halves to process jointly after the material of good magnetic property and the two ends up and down of same diameter betwixt are bonded with the exhausted magnet [4] of non-magnet material, and the last area of plane on its body is greater than the area of lower plane.

3, arch measurer according to claim 1, it is characterized in that described rising stem [12], it is to be made by thin-walled hollow tubing, be equipped with in the pipe that its upper end is connected the rope [14] that has scale [13] on the ring [9] and its lower end is fixed on the automatic winder [11] at the bottom of the bar, pipe is outer to be had its upper end of a stay cord [10] to be connected ring [7] upward to be connected on the automatic winder [11] of rising stem [12] near the bottom its lower end in addition.

4, magnetic arch measurer according to claim 1 is characterized in that the available flexible socket joint type multitube hollow tube of described rising stem [12] constitutes, and also can adopt the folding section bar that connects to constitute.

5, magnetic arch measurer according to claim 1, its feature also can use its top to be provided with big plane and the magnet steel or the electromagnet [17] that have the movable balls joint in the side is movably arranged on rising stem [12] top at described magnetic suction nozzle [1], wherein electromagnet [17] and be connected with the set electric switch in rising stem [12] bottom.