CN103231959B - Permanent magnet eddy current linear braking system for elevator testing - Google Patents

Abstract

The invention relates to a permanent magnet eddy current linear braking system for elevator testing. The permanent magnet eddy current linear braking system for elevator testing is applied to a safety tongs testing experiment in an elevator testing system and is used for braking a testing stand loaded with safety tongs when the safety tongs fail. The permanent magnet eddy current linear braking system for elevator testing comprises a magnetic steel group, a braking guide rail and a transverse movement mechanism. The magnetic steel group is arranged on opposite corners on two sides of the testing stand and generates a high-intensity magnetic field in the power-up state. Two ends of the braking guide rail are fixed on a beam of a testing tower through a guide rail installation support, one end of the braking guide rail extends into a gap between the N pole and the S pole, and the braking guide rail and the magnetic steel group have relative movement. The transverse movement mechanism is arranged on the beam of the testing tower, is aligned at the end of the braking guide rail and connected with the braking guide rail, and drives the braking guide rail to move transversely to change the contact area between the braking guide rail and the magnetic steel group. The permanent magnet eddy current linear braking system achieves permanent magnet braking of the testing stand and reduces mechanical friction in a conventional braking system.

Description

A kind of permanent-magnet eddy current linear brake system of elevator test

Technical field

The present invention relates to a kind of brake system, particularly relate to the permanent-magnet eddy current linear brake system of a kind of elevator test.

Background technology

Current eddy current system has linear pattern Permanent magnet eddy-current brake and rotary-type two kinds, and the field of application of existing rotary-type Permanent magnet eddy-current brake is wider.

As Chinese patent, a kind of permanent-magnet eddy current retarder of radial arrays, publication number; CN102497084, disclose a kind of permanent-magnet eddy current retarder of radial arrays, it comprises left adapter plate, right adapter plate, transmission shaft, rotor, servomotor, coupler, motor fixing frame, two-way lead screw shaft, feed screw nut that two rotation directions are contrary, three straight optical axis, stator that two structures are identical; The rotor be made up of permeability magnetic material, is arranged on transmission shaft by key, and there are two symmetrical circular grooves rotor outer ring, and the inside and outside face of cylinder of circular groove forms the driving surface of rotor; The two ends of transmission shaft are arranged in left and right adapter plate centre hole respectively by bearing; The two ends of two-way lead screw shaft are arranged in the hole above left and right adapter plate centre hole respectively by bearing; Respectively by nut, the two ends of three straight optical axis are fixed on that left and right adapter plate centre hole is forward and backward, in the hole of below; Two stators are by a radial arrays magnet ring and a retainer composition; One side end face of radial arrays magnet ring is bolted on the end face of retainer, the inside and outside face of cylinder of radial arrays permanent-magnetic clamp is coaxial with the driving surface of rotor, and the inside and outside face of cylinder of radial arrays permanent-magnetic clamp maintains diameter clearance respectively and between the inside and outside face of cylinder of rotor annular groove; Each retainer is evenly equipped with four mounting holes, wherein goes up mounting hole and coordinated with two-way lead screw shaft by feed screw nut, its excess-three mounting hole coordinates with respective straight optical axis respectively by linear bearing; Servomotor is arranged on outside left adapter plate by motor fixing frame, servo motor output shaft is connected with two-way lead screw shaft by coupler (2), it adopts the magnetic field, interior outside of radial arrays magnet ring, compared to existing radial arrays permanent-magnet eddy current retarder, permanent magnet degree of utilization doubles.But the structure of rotary-type eddy current brake is comparatively complicated, be unsuitable for the braking of long distance, and braking force can not change in time.

In view of above-mentioned defect, creator of the present invention obtains this creation finally through long research and practice.

Summary of the invention

The permanent-magnet eddy current linear brake system that the object of the present invention is to provide a kind of elevator to test, in order to overcome above-mentioned technological deficiency.

For achieving the above object, the invention provides the permanent-magnet eddy current linear brake system of a kind of elevator test, it is in safety tongs testing experiment in elevator pilot system, when safety tongs lost efficacy, braking is mounted with the test rack of described safety tongs, and it controls by a TT&C system, and it comprises:

One magnet steel group, it is arranged on the diagonal angle of described test rack both sides, and it comprises a series of along test pylon upright post vertical to the extremely relative magnetic links of N, S of arrangement, and it produces high-intensity magnetic field in the energized state;

One braking guide rail, it is positioned at the bottom of described test pylon, and its two ends rail mounting bracket is fixed on the crossbeam of described test pylon, and its cross section is T-shaped, and its one end is stretched in the space between described N, S pole, produces relative motion with described magnet steel group;

Preferably, the permanent-magnet eddy current linear brake system of described elevator test also comprises a transverse moving mechanism, it is arranged on the crossbeam of described test pylon, with the end part aligning of described braking guide rail, it is connected with described braking guide rail, order about described braking guide rail at transverse shifting, change to make the area of contact between described braking guide rail and magnet steel group.

Preferably, described permanent-magnet eddy current linear brake system also comprises a guiding mechanism, is provided with a pilot bar, and when described braking guide rail transverse shifting, it is described braking guide rail guiding.

Preferably, described transverse moving mechanism comprises a motor, a leading screw and a nut, wherein, described nut is provided with described braking guide rail.

Preferably, the structure at the two ends of described braking guide rail comprises:

A junction, it is connected with described nut, and plays motion with one;

One induction end, in the space between its N, S pole being partly or entirely placed in described magnet steel group, the magnetic field induction directly produced with described magnet steel group, generation eddy current magnetism;

One guide groove, it in order to hold the pilot bar on described guide frame in transverse shifting process, and it is symmetricly set on the two ends of described braking guide rail.

Preferably, the distance between described braking rail end and magnet steel group end reduces with the increase of the quality of described test rack, to change described magnet steel group and the area of contact of braking guide rail, and then changes the braking force of described permanent-magnet eddy current linear brake system.

Preferably, described permanent-magnet eddy current linear control system also comprises a weight sensor, it is arranged on described test rack, it is in order to measure the quality of described test rack after having loaded counterweight, and weight information is transferred to described TT&C system, described TT&C system controls described transverse moving mechanism according to this quality.

Preferably, described permanent-magnet eddy current linear control system also comprises a displacement pickup, and it is arranged on the end of the upper end of described braking guide rail, in order to measure described test rack in the instantaneous acceleration entering the permanent magnet braking stage.

Preferably, described TT&C system comprises a logic and administrative unit, be stored with the motor program of each mechanism of described permanent-magnet eddy current linear brake system, it is according to the Information Monitoring of each sensor, according to each mechanism kinematic of permanent-magnet eddy current linear brake system described in the programming control preset.

Preferably, the intensity of current in described magnet steel group enters the increase of the instantaneous acceleration in permanent magnet braking stage and increases with described test rack.

Preferably, the structure at the two ends of described braking guide rail also comprises a block, and it is positioned at the both sides of described braking guide rail, for limiting the traverse range of described braking guide rail, wherein side block contacts with described guiding mechanism, and opposite side block contacts with described pylon.

Beneficial effect of the present invention is compared with the prior art: the permanent-magnet eddy current linear brake system of elevator test of the present invention is by arranging braking guide rail and electromagnet, realize the braking of pilot system, employing Permanent magnet eddy-current brake avoids the vigorous friction in conventional braking system, decrease the wearing and tearing of the parts such as brake disc, reduce noise, friction heat stress and maintenance load, extend service life; The transverse moving mechanism that the present invention is arranged, described braking guide rail in horizontal fine setting, can change the area of contact between braking guide rail and magnet steel group, TT&C system is according to the quality of test rack, adjustment area of contact, can save stopping distance, can prevent again the heat absorption of braking guide rail and cause distortion; TT&C system, also according to the state of tested safety tongs, changes the intensity of current in magnet steel group, and then changes the size of braking force, changes the kinetic energy that absorption test frame has.

Accompanying drawing explanation

Fig. 1 is the schematic diagram of the descending pylon agent structure of elevator pilot system in the present invention;

Fig. 2 is the schematic diagram of the component devices of the descending pilot system of elevator in the present invention;

Fig. 3 be the guide frame of the descending pilot system of elevator of the present invention face structural representation;

Fig. 4 be the release gear of the descending pilot system of elevator of the present invention face structural representation;

Fig. 5 a be the test rack of elevator pilot system of the present invention face structural representation;

Fig. 5 b be the safety tongs trigger mechanism embodiment one of elevator pilot system of the present invention face structural representation;

Fig. 5 c is the schematic diagram of the safety tongs trigger mechanism embodiment two of elevator pilot system of the present invention;

Fig. 6 a is the integral structure schematic diagram of the handler of elevator pilot system of the present invention;

Fig. 6 b be the telescoping mechanism of elevator pilot system of the present invention face structural representation;

Fig. 6 c be the counterweight hoisting mechanism of elevator pilot system of the present invention face structural representation;

Fig. 6 d be the cross traveling trolley of elevator pilot system of the present invention face structural representation;

Fig. 7 be the shock absorber of elevator pilot system of the present invention face structural representation;

Fig. 8 a is the schematic diagram of the permanent-magnet eddy current linear brake system of elevator pilot system of the present invention;

Fig. 8 b is the schematic diagram of the permanent-magnet eddy current linear brake of elevator pilot system of the present invention;

Fig. 8 c is the schematic top plan view of the permanent-magnet eddy current linear brake system of elevator pilot system of the present invention;

Fig. 8 d is the schematic top plan view of the braking rail end of elevator pilot system of the present invention;

Fig. 9 is distance and the relationship between quality figure of the eddy current system of elevator pilot system of the present invention;

Figure 10 is the functional block diagram of the TT&C system of elevator pilot system of the present invention;

Figure 11 is the comparison monitored control system principle schematic of the redundant system of elevator pilot system of the present invention;

Figure 12 is electric current and the acceleration/accel graph of a relation of the eddy current system of elevator pilot system of the present invention;

Figure 13 is the schematic diagram of the component devices of the up-running over-speed protection test of the up pilot system of the present invention;

Figure 14 be the counterweight frame of the up pilot system of the present invention face structural representation;

Figure 15 is the acquisition time interval of sensor of the present invention and the curve synoptic diagram of speed;

Figure 16 is the schematic diagram of the component devices of velocity limiter pilot system of the present invention.

Detailed description of the invention

Below in conjunction with accompanying drawing, to above-mentioned being described in more detail with other technical characteristic and advantage of the present invention.

Elevator safety pilot system of the present invention has uplink and downlink pylon, wherein said descending pylon is tested the descending safety device of elevator, up pylon is tested protection device for over-speed ascending for elevator and velocity limiter, and the testing experiment of various device shares a TT&C system; Described descending safety device comprises descending safety tongs and shock absorber, and described protection device for over-speed ascending comprises towing machine, wire holder and up safety tongs, is now described the test of each elevator car safety respectively.

The basic component of the descending pilot system of the present invention is descending pylon, refers to shown in Fig. 1, and it is the schematic diagram of the descending pylon agent structure of elevator pilot system in the present invention, and described descending test pylon is used for safety tongs and falls and bumper tests.Described descending test pylon is supported by vertical column 15 and truss 14 and forms, every root post 15 is welded by square tube segmentation and forms, connect with truss 14 between described column 15, truss 14 adopts rhs-structure to form, be arranged symmetrically with in splayed, described pylon is surrounded hollow framework by it, and central space is in order to arrange various experimental set-up of the present invention and test rack; Pylon top is provided with entablatrance 12, described entablatrance 12 is provided with the bont in the present invention; Bottom column 15, be provided with two square grade beams 112, this grade beam 112 is connected with the holding-down bolt of tower foundation, is fixed by main truss.

Described pylon is made up of more piece, at pylon, a workplatform 13 and illumination equipment are set every about 5m, described workplatform 13 is made up of floor, corrosion-resistant steel railing and diagonal ligament, a cat ladder 16 is provided with between operated adjacent platform 13, pass through up and down with for operating personal, described workplatform 13 and cat ladder 16 surrounding arrange guardrail, prevent personnel from falling; As the basic building block guide rail 19 of elevator and pilot system of the present invention, it is connected and fixed with described column 15 and crossbeam 111 by a rail mounting bracket 17, in this pilot system, be provided with at least one pair of guide rail, its test rack being respectively different model provides orbit; In order to meet the test of multiple test rack, guide rail 19 in the present invention can be changed, often save guide rail between above-mentioned adjacent workplatform 13, described rail mounting bracket 17 is corresponding with the position of described workplatform 13, and the personnel of being convenient to operation change the guide rail of different model.

Refer to shown in Fig. 2, its schematic diagram being the descending pylon component devices of the descending pilot system of elevator of the present invention, described descending pilot system comprises bont 2, guide frame 3, release gear 4, test rack 5, shock absorber 6, counterweight handing device, building hoist, safety tongs trigger mechanism and electric-control system etc., for safety tongs drop test and bumper tests; Wherein, described bont 2 is arranged on the top of described pylon, it promotes, fall described guide frame 3, below described guide frame 3, described release gear 4 is installed, described guide frame 3 is the rising of described release gear 4 and the guiding that declines, and be provided with described test rack 5 below described release gear 4, the downside of described test rack 5 is provided with detected safety tongs, described shock absorber 6 is placed in bottom pylon, causes damage to prevent test rack 5 accidental falling to test facility and neighbouring building.

Please continue shown in composition graphs 2, described bont 1 mainly comprises the constant electric block of rings center 21 and dolly 22, described electric block 21 is arranged on dolly 22, and described dolly 22 is arranged on supporting guide 23, and described supporting guide 23 is fixed on described entablatrance 12; In the present invention, described dolly 22 can on described supporting guide 23 transverse shifting, described supporting guide 23 end is provided with baffle plate, to limit the range of movement of described dolly 22; In the present embodiment, described dolly 22 has two fixed positions, left and right on supporting guide 23, can be applicable to two groups of test tracks, can carry out safety detection to the test rack of different model.

Refer to shown in Fig. 3, its be the guide frame of the descending pilot system of elevator of the present invention face structural representation, in the present invention, guide frame 3 has different models, is applicable to different test loads respectively, can change as required; Described guide frame 3 is suspended on the suspension hook of described electric block 21, and with lead boots and install fixing, by described lead boots can on described guide rail 19 crank motion, described electric block 21 provides tractive force for it; Described guide frame 3 lower end is connected with described release gear 4, described guide frame 3 play the guiding role to described release gear 4, simultaneously when described release gear 4 discharges described test rack 5, bear an antagonistic force, it also has the effect of stablizing described release gear 4 and above-mentioned suspension apparatus; In the present embodiment, described guide frame 3 comprises a support 31, and it has one arrange symmetry projection 33, adapter shaft of lateral threaded holes through described tapped bore, described guide frame 3 is mounted by this adapter shaft by the suspension hook of described electric block 21; Described guide frame 3 also comprises a hook support 32, and it is in order to be connected with the hook of described test rack 5 upper end.

Refer to shown in Fig. 4, its be the release gear of the descending pilot system of elevator of the present invention face structural representation, described release gear 4 comprises a release frame 43, and it forms the main body of described release gear; Also comprise a trigger unit, in the present embodiment, it is electromagnet 41, push rod 42; One linkage portion, it comprises a left lever 45, and switches through the right pull bar 48 of Rocker arm 46, release Rocker arm 47; One card-tight part, it comprises a hook 44, and described hook 44 is positioned at described release frame 43 both sides in pairs, in order to hang thereon by described test rack 5; In addition described release gear 4 also comprises a control part, and it controls the action of described trigger unit, and then controls the motion of described linkage portion and card-tight part, in order to discharge or to clamp described test rack 5.

Wherein, described release Rocker arm 47, the ends contact of one external part and described push rod 42, when described electromagnet 41 obtains electric, described push rod 42 moves downward, the end action of the described release Rocker arm 47 of direct promotion, described release Rocker arm 47 can along its central rotation, its another external part side is provided with a safety pin 40, described safety pin 40 is in order to limit the motion of described release rocking arm, only have when described safety pin 40 takes out, described release Rocker arm 47 just can move, to prevent misoperation, at this end of described release Rocker arm 47, also be provided with a spring 49, described spring 49 other end is fixed on described release frame 43, in order to limit the motion of described release Rocker arm 47 and to make it reset, 3rd external part of described release Rocker arm 47 is provided with a roller 471, described roller 471 contacts with described switching Rocker arm 46, when discharging described test rack 5, described roller 471 separates with described switching Rocker arm 46, described switching Rocker arm 46 two ends are connected with described left lever 45 and right pull bar 48 respectively, when described roller 471 is separated with described switching Rocker arm 46, describedly switch through Rocker arm 46 clickwise, described left and right pull bar promotes to be attached thereto two hooks 44 connect respectively, left side suspension hook left-hand revolution, right side hook clickwise, a larger spacing is produced between the end of described suspension hook and described release frame 43, the hook bar of described test rack 5 is separated with described hook 44, described test rack falls.

Refer to shown in Fig. 5 a, its be the test rack of elevator pilot system of the present invention face structural representation, described test rack 5 top is provided with described hook bar 51, and described hook bar 51 end is provided with horizontal through hole, in order to mount with described suspension hook 44; Described test rack 5 is supported by head tree 53 and forms, and described test rack 5 relies on described head tree 53 along described guide rail 19 up-and-down movement; The middle part of described test rack 5 and bottom are separately installed with a set of trigger mechanism 54, and in the present invention, described trigger mechanism has electronic trigger mechanism and mechanical trigger mechanism; Trigger mechanism 54 in the middle part of described test rack 5 and one insures safety tongs and is connected, and the trigger mechanism of bottom is connected with tested safety tongs; Described test rack bottom is also provided with a shock seat 55, in order to clash into described shock absorber 6, during test, discharge described test rack 5, when it arrives predetermined speed, described tested safety tongs action, described test rack 5 is clamped on described guide rail 19, makes the stop motion of described test rack 5, if described tested safety tongs lost efficacy, then described insurance safety tongs action, moves to limit described test rack 5.

Refer to shown in Fig. 5 b, its for elevator pilot system of the present invention trigger mechanism embodiment one face structural representation, this trigger mechanism is mechanical triggering mode, it is identical with the safety tongs trigger theory of conventional elevator, it comprise driving lever 543, be connected with driving lever 543 bearing seat 542, pivoted arm 546 and rotating shaft, shift fork and connecting rod 541, described trigger mechanism is locked to restrict with the retinue of described test rack 5 and is connected; At the trial, when described test rack 5 is transferred and is reached predetermined speed, velocity limiter control described retinue lock rope band moves described pivoted arm 546 and rotates, and then drive described axis of rotation, described rotating shaft drives described driving lever 543 to rotate, described driving lever 543 promotes described safety tongs action, is clamped by described guide rail 19, makes elevator brake.

Refer to shown in Fig. 5 c, the schematic diagram of its trigger mechanism embodiment two being elevator pilot system of the present invention, it comprises push rod 549, spring 548 and a yoke assembly 547, wherein, described push rod 549 is directly connected with safe claw beam, described spring 548 is placed between described push rod 549 and yoke assembly 547, described control system controls described yoke assembly 547 and obtains electric, promote described spring 548, make it extend, and then promoting the action of described push rod 549, described push rod 549 promotes safe claw beam action, clamping guide-rail.

Refer to shown in Fig. 6 a, the integral structure schematic diagram of its handler being elevator pilot system of the present invention, described counterweight handler is the handler of three degree of freedom, the counterweight of described test rack 5 is placed in order to handling, it comprises test tower column 74, counterweight hoisting mechanism 71, telescoping mechanism 72 and cross traveling trolley 73, wherein, described hoisting mechanism 71 is for being elevated counterweight 70, and described test rack 5 is placed and transported out of to counterweight 70, described telescoping mechanism 72, by the handling counterweight 70 of flexible realization on different tests frame 5, described cross traveling trolley 73, the fore and aft motion of itself and described telescoping mechanism 72 is perpendicular, its motion of translation realizes loading and unloading counterweight 70 on descending hoistway and up hoistway.

Refer to shown in Fig. 6 b, its for elevator pilot system of the present invention telescoping mechanism face structural representation, described telescoping mechanism stretching by a telescopic girder 726, realize the handling of counterweight 70 on different tests frame 5, it is driven by a motor 725, its rotary motion is passed to described Transmission by a belt pulley 723 by described motor 725, in the present embodiment, described Transmission is screw-nut body, described belt pulley 723 is by described rotary motion transmission extremely described leading screw 722, described nut 721 is connected with described telescopic girder 726, described telescopic girder 726 moves in the horizontal direction with described nut 721, described telescopic girder 726 is fixed with a hanging box 728, described hoisting mechanism 72 is fixed in described hanging box 728, the fore and aft motion of described telescopic girder 726 drives described hoisting mechanism 72 to move together, realize the comparatively wide working range of described counterweight handing device.

Refer to shown in Fig. 6 c, its for elevator pilot system of the present invention hoisting mechanism face structural representation, described hoisting mechanism is placed in described hanging box 728, it comprises motor 712, gear cluster 713 is connected with motor shaft, and a ball screw framework, described leading screw 714 rotates, described nut 715 transverse shifting, one movable pulley 715, it is wound with a hoist cable 718, described hoist cable 718 one end is fixed, the other end is connected with a suspension hook 711, described hoist cable 718 changes into vertical direction through a quiet pulley 716, described suspension hook 711 comprises connecting rod and clamp 712, described clamp 712 clamps described counterweight 70, it is also provided with handle, in order to M/C, load and unload described counterweight 70, collide for preventing suspension hook 711 and described hanging box 728 described in lifting process from producing, described hanging box 728 bottom is also provided with a stage clip 717.

Refer to shown in Fig. 6 d, its for elevator pilot system of the present invention cross traveling trolley face structural scheme of mechanism, described cross traveling trolley 73 is fixed on described telescoping mechanism 72 by trolley frame 738, rotary motion is passed on a transmission shaft 737 by messenger chain wheels 735 by one motor 736, described transmission shaft 737 is provided with a roller 734, described roller 734 contacts with a traversing vehicle frame 732, a castor 733 is also provided with below described traversing vehicle frame 732, under the effect of described roller 734, described traversing vehicle frame 732 can move along the direction vertical with motor 736 axial direction, in the scope of up hoistway and descending hoistway, counterweight is loaded and unloaded to realize described counterweight handler, motor 731 is connected with a feed screw nut component by chain wheel set 732, and the nut 739 on it can be connected with a hanging box, makes it move on motor 731 axial direction, realizes the counterweight handling between different tests frame.

Refer to shown in Fig. 7, its for elevator pilot system of the present invention shock absorber face structural representation, it comprises upset movable decking 63, hydraulic ram 62 and an energy disperser 61 split, described shock absorber 6 is arranged in the pit below column 15, described energy disperser 61 is placed in below described upset movable decking 63, there is backing plate between the two, the ground below described energy disperser 61 is also provided with backing plate; Described hydraulic ram 62 is respectively arranged with, for overturning movable decking 63 described in jack-up below described upset movable decking 63; When carrying out bumper tests, bench board can lock by described upset movable decking 63, and when preventing the shock seat 55 on described test rack 5 from clashing into, energy disperser 61 tilts and affects test effect; When carrying out safety tongs test; described hydraulic ram 62 by described movable overturn platform 63 by horizontal position top set to vertical position; expose described energy disperser 61; get out of the way safety tongs pilot passageway; and vertical movable overturn platform 63 doublely can do apron; when avalanche occurring, splashing, play the effect of part protection.

In the present embodiment, test tower energy disperser has oil-gas formula energy disperser, it is for the large test rack of descending pylon, described oil-gas formula energy disperser has the highest efficiency and best energy absorption capacity, during buffer operative, the fluid that piston rod promotes oil pocket flows in dry air or nitrogen air chamber, pressure gas and fluid simultaneously stability energy, fluid under external force, flows through one or more aperture and produces damping dissipation test rack impact energy.

The energy disperser of descending pylon small test frame comprises oil-gas formula energy disperser and permanent magnet linear eddy current brake systems, wherein said permanent magnet linear eddy current brake systems, magnet on it is arranged on test rack, braking guide rail and inductor are as the motion guide rail of described test rack, described magnet and braking guide rail produce relative motion, in inductor, produce eddy current, the magnetic field that eddy current produces and the magnetic field interaction that magnet produces, obtain braking force, described test rack is braked.

Refer to shown in Fig. 8 a, the schematic diagram of its permanent-magnet eddy current linear brake system being elevator pilot system of the present invention, the diagonal angle, both sides of described test rack 5 is provided with a magnet steel group 192, it comprises a series of along test pylon upright post vertical to the extremely relative magnetic links of N, S of arrangement, and it produces high-intensity magnetic field in the energized state; The middle part of the both sides of test rack 5 is provided with rolling guide shoe 190, in the operational process of described test rack 5, supports the operation of described guide rail 19; A braking guide rail 191 is had in the couple positioned opposite of described magnet steel group 192; In the present invention, described eddy current system is positioned at the bottom of described test pylon, and it saves between guide rail at 1-2, total kilometrage is about 15m, and the total length of described braking guide rail 191 is about 15m, and its two ends are fixed by described rail mounting bracket, it is laterally adjustable, and detachably.

Refer to shown in Fig. 8 b, the schematic diagram of its permanent-magnet eddy current linear brake being elevator pilot system of the present invention, described test rack 5 is provided with a series of N, the electromagnet that S pole replaces, be magnet steel group 192 in the present embodiment, described test rack 5 is braking object, it is T-shaped braking guide rail 191 that place is corresponding thereto provided with cross-sectional plane, above-mentioned N is stretched in its one end, in space between S pole, when described test rack 5 is by this section braking guide rail, the magnetic flux that described magnet steel group 192 produces, travelling-magnetic-field is set up in air gap, described braking guide rail 191 internal induction is made to go out electro-motive force and eddy current, by the interaction in eddy current magnetism and described magnet steel group magnetic field, produce tangential lock torque, through certain stopping distance, kinetic energy in described test rack 5 is become the heat energy in braking guide rail 191 by eddy current magnetism, by track, heat is distributed, employing Permanent magnet eddy-current brake avoids the vigorous friction in conventional braking system, decrease the wearing and tearing of the parts such as brake disc, reduce noise, friction heat stress and maintenance load, extend service life.

Elevator pilot system of the present invention can be tested the test rack of different load, described braking guide rail 191 is regular length, thus, the intensity of eddy current magnetism can regulate according to the weight of test rack 5, in the present invention, adopt the mode of the area of contact changing described magnet steel group 192 and braking guide rail 191.Refer to shown in Fig. 8 c, the schematic top plan view of its permanent-magnet eddy current linear brake system being elevator pilot system of the present invention, a transverse moving mechanism is respectively arranged with at described braking guide rail 191 two ends, in this enforcement, it is a screw-nut body, it comprises a motor 196, one leading screw 195, one nut 197, it is arranged on the crossbeam 111 of described pylon, and with braking guide rail 191 end part aligning, described nut 197 is provided with described braking guide rail 191, nut 197 transverse shifting, drive described braking guide rail 191 transverse shifting, area of contact between itself and described magnet steel group 192 is changed, a guiding mechanism 194 is also provided with between described magnet steel group 192 and braking guide rail 191, be provided with a pilot bar, when described braking guide rail 191 transverse shifting, it leads for described braking guide rail 191, ensures described braking guide rail 191 linearly transverse shifting, described guiding mechanism 194 is symmetricly set on the both sides of described braking guide rail 191, and it is fixed on described pylon by a screw rod and screw.

Refer to shown in Fig. 8 d, the schematic top plan view of its braking rail end being elevator pilot system of the present invention, the end of described braking guide rail 191 is provided with a junction 1932, induction end 1931, one guide groove 1933 and a block 1934, described connecting portion 1932 is connected with described nut 197, and plays motion with one; Described induction end 1931, it is partly or entirely placed between N, S pole of described magnet steel group 192, in order to the magnetic field induction produced with described magnet steel group 192, produces eddy current magnetism; Described guide groove 1933, it in order to hold the pilot bar on described guiding mechanism 194 in transverse shifting process, and it is symmetricly set in the both sides of described braking guide rail 191; Described block 1934, it is positioned at described braking guide rail 191 both sides, and for limiting the traverse range of described braking guide rail 191, wherein side block contacts with described guiding mechanism 194, and opposite side block contacts with described pylon.

Before the test, described TT&C system controls described counterweight handing device and loads and unloads counterweight according to preset requirement, described TT&C system according to the weight of described test rack 5 to described motor 196 sending controling instruction, control it and drive described screw-nut body, described braking guide rail 192 is made to move to predeterminated position, to realize the braking of better effect, the composition of described TT&C system and function will be described in the following; Described test rack 5 is provided with a weight sensor, and it in order to measure the quality of described test rack 5 after having loaded counterweight, and transfers to described TT&C system, and described TT&C system controls described transverse moving mechanism according to this quality.

Refer to shown in Fig. 9, the distance of its eddy current system being elevator pilot system of the present invention and relationship between quality figure, shown in Fig. 8 c, d represents the clearance distance between braking guide rail 19 end and magnet steel group 192 end, m represents that described test rack 5 has loaded the total mass of counterweight, as we know from the figure, along with the quality of test rack 5 increases, d reduces gradually, also the area of contact namely between magnet steel group 192 and the induction part braking guide rail increases, braking force also increases, and is conducive to utilizing limited brake length to realize the braking of test rack; Refer to following formula (1), it is the distance of eddy current system and the functional relation of quality of elevator pilot system of the present invention for it, at described test rack 5 quality m < m ₁time, distance d increases with quality m and reduces very fast, and in this stage, described braking guide rail has larger leeway, and d increases, and is conducive to realizing braking at short notice; m ₁≤ m < m ₂time, distance d increases with quality m and reduces comparatively slow, and this step-by-step test frame quality is comparatively large, and stopping distance is long, and heat production is also more, for preventing the heat absorption of braking guide rail from causing distortion, increases braking time as far as possible; As m>=m ₂time, described braking guide rail and magnet steel group have maximum area of contact, and now, permanent magnet braking will reduce the kinetic energy of described test rack to greatest extent, to alleviate the brake-pressure of the shock absorber of pylon lower end.

In formula, d represents the clearance distance between braking guide rail 191 end and magnet steel group 192 end, and m represents that described test rack 5 has loaded the total mass of counterweight, and D represents the total length of the induction end of braking guide rail 19, and n represents the logarithm of the magnet steel group on braking guide rail 191, M ₀be a constant, its size is determined by the field intensity of often pair of magnet steel group, and α is the dutycycle of magnet steel group 191, i.e. the width of every magnet steel group and the ratio had, and L is the lateral length of magnet steel group 191, and h is the total length of braking guide rail 192, B ₀for the average field-strength of often pair of magnet steel group, for braking the conductivity of guide rail.

Above-mentioned distance and the operation program of quality are stored in the corresponding processing unit of described TT&C system, and this will describe in detail in the following; When the safety tongs test testing elevator, the electric current that TT&C system will adjust according to the mode of operation of safety tongs and the speed of test rack in magnet steel group.

In the present invention, also comprise a triplex redundance redundant computation machine observe and control system, in order to measure the kinematic parameter of described tested equipment in real time, and control the working process of described pilot system, refer to shown in Figure 10, the functional block diagram of its TT&C system being elevator pilot system of the present invention, described TT&C system, it comprises a logic and administrative unit 81, one real-time controlling unit 82, one data acquisition unit 83 and an action control unit 84, wherein, described logic and administrative unit 82, be stored with the test program of each device being tested, in order to data analysis and the process of each device being tested to three kinds of data channel transmission, the system failure is diagnosed and processes, and carry out communication with described action control unit 84 and control whole system action, realize the man-machine interaction of system, data interaction is carried out with the external world, described data acquisition unit 83, its displacement in order to the related device by the sensor collection be arranged on each device being tested, speed, acceleration/accel and tension information transfer to described logic and administrative unit 81, and carry out data interaction with described real-time controlling unit 82, described each proving installation is provided with corresponding testing sensor, described real-time controlling unit 82, its information transmission of being collected by described data acquisition unit 83 is to described logic and administrative unit 81, its Real-Time Monitoring also adjusts the displacement of each proving installation, speed, acceleration/accel, realizes the scene protection of the displacement of system and the closed loop control of speed and test specimen, described action control unit 84, it receives the control information of described logic and administrative unit 82, controls the start-stop of each device of described pilot system, controls described safety tongs action under the invention, safety tongs triggers and release gear action in row pilot system.

In the present embodiment, described data acquisition unit 83 comprises analog interface circuit and digital interface circuit, and it is the interface of computing machine and external control devices, hardware comprises control housing and circuit card; The core of described logic and administrative unit 81 and real-time controlling unit 82 is all computing machine; Described action control unit 84 comprises a PLC, frequency converter and various relay, and described PLC and described logic and administrative unit 81 carry out data interaction, and control described frequency converter and the various actuating of relay.

In order to ensure mission reliability and the safe reliability of system, in computer measurement and control system of the present invention, adopt dissimilar redundancy fault tolerant technique to build triplex redundance redundant system, and adopt analytic redundancy technology to complete condition monitoring to the high survey sensor of reliability requirement and fault isolation; The key sensor that TT&C system is used for motion control comprises laser velocimeter sensor, multi-turn absolute encoder and acceleration pick-up, has from monitoring function, to realize monitoring in real time, effectively improves Fault Tolerance; In the present embodiment, MEGA, ARM9 and X86 tri-kinds of hardware platforms are adopted in described TT&C system, build dissimilar redundancy TT&C system, independently measure movable body kinematic parameter by laser velocimeter sensor, multi-turn absolute encoder and acceleration pick-up, utilize algorithm to draw each self-acceleration, speed and displacement data respectively; Now be described as follows to three kinds of sensors, only to measure the acceleration/accel of test rack.

Described laser sensor, it is arranged on the guide rail that described test rack 5 slides, it is a speed sensor, in order to gather displacement and the speed signal of described test rack 5, it to be connected with administrative unit 81 by the interface of standard configuration and above-mentioned industrial computer and logic and to communicate, the displacement information of described test rack 5 is transferred in described industrial computer and processes, calculate the acceleration/accel of described test rack 5 in real time.

Described rotary encoder, it is connected with described drive motor and action control unit 84, and it gathers the corner information of described motor and transfers to described logic and administrative unit 81, in order to calculate displacement and the speed of described test rack 5 in real time.

Described accelerometer, it is an acceleration pick-up, and it is arranged on described test rack 5, moves together with described test rack 5, and the acceleration information of test rack 5 is transferred to described logic and administrative unit 81 processes.

Triplex redundance redundant computation machine observe and control system of the present invention, monitoring is compared in employing and sensor monitors the monitor mode combined certainly, primary fault detects to adopt and realizes from monitoring and comparing the mode monitoring combination, and secondary failure and three fault detections are realized by self-monitoring mode.

The mode comparing monitor mode and adopt cross aisle to compare of the present invention, refer to shown in Figure 11, the comparison monitored control system principle schematic of its redundant system being elevator pilot system of the present invention, the data message of each sensor and rotary encoder transmits by described data transmission channel respectively, data channel one a1, data channel two a3 is respectively by the central processing unit a2 process in the data information transfer of its correspondence to each administrative unit 81 of described logic, the input information of three data channel compares by described central processing unit a2 between two, the situation exceeding specified thresholds according to its difference judges the passage of et out of order, information as three kinds of data channel is respectively A, B, C, if described central processing unit a2 judges | A-B| and | the value of A-C| all exceedes threshold value, then can judge the data channel et out of order carrying A information, described each central processing unit will judge that information transmission is in selection processor a4, it judges the accurate information of data channel and selects, and the data of selection are transferred to described action control unit 84 or data acquisition unit 83 through data transmission channel a5, the above-mentioned monitor procedure that compares is processed by described logic and administrative unit 81, central processing unit in it and selection processor process according to pre-set programs after carrying out breakdown judge and data analysis selection.

System of the present invention mainly comprises offline inspection and on-line checkingi mode from monitoring, and the off-line self checking method of employing mainly comprises: handler Autonomous test, and memory device stores check sum, A/D switching channel Autonomous test, CAN Autonomous test etc.; What system was taked mainly comprises online from method for supervising: controller is from monitoring, as timer monitoring, power supply are monitored certainly from monitoring, memory device, described controller can adopt a house dog software or circuit to monitor, it is according to the time automatic cycle preset, if system does not carry out feeding dog, system reset within a certain period of time, test No. increases automatically, continues test according to original data.

Above-mentioned various sensor in the present invention all possesses from monitoring function, its implementation process is realized by described logic and administrative unit 81, described various sensor sends Detection Information and the monitor message of self of each device to described logic and administrative unit 81 through described data acquisition unit 83, according to the program preset, described logic judges that whether monitor message is consistent with the normal job information of sensor with administrative unit 81, detect electrical accident.

Now in conjunction with above-mentioned TT&C system and each experimental set-up, the process of the test to elevator safety gear is described, and in the present invention, described descending tower height is allocated as follows: tower top space is for installing described bont 2; Described test rack 5, guide frame 3 are thereunder; Tower height can meet the distance requirement of the safety tongs action of test command speed.

When carrying out safety tongs drop test, described action control unit 84 controls described bont, makes it be in the height of described counterweight handler, controls described counterweight handler and places the counterweight preset to described test rack 5, and rise to top, described action control unit 84 controls the fixed position that described dolly 22 moves to described pylon, described test rack 5 is risen to predetermined altitude by the electric block 21 on it, described logic and administrative unit 81 are to described action control unit 84 control information transmission, described action control unit 81 controls the action of described release gear 4, by described test rack 5 from its hook 44 release, described test rack 5 freely falls, when test rack 5 reaches command speed, on described test rack 5 accelerometer, the displacement that rotary encoder on motor and the sensor on guide rail will gather respectively, acceleration/accel and velocity information transfer to described logic and administrative unit 81 by data acquisition unit 83, described logic and administrative unit 81 analyze this data message, control command is sent to described action control unit 84, trigger described safety tongs trigger mechanism, described safety tongs action, and then TT&C system measures the performance perameter of safety tongs respectively automatically by above-mentioned three kinds of metering systems, in the process, described real-time controlling unit 82 obtains the Information Monitoring of described data acquisition unit 83 in real time, and adaptive adjustment is carried out to the state of each proving installation, ensure the normal operation of each proving installation.

1) nominal situation, when test rack 5 drops to h1 height, when reaching the maximum test speed of its permission, tested safety tongs action, described test rack 5 continues to drop to h2 height by predetermined detecting distance, in the case, described test rack 5 runs with the constant acceleration preset, now, according to the sensor Information Monitoring on each proving installation, described logic and administrative unit 81 judge that described each proving installation does not have exception, then test is normal, and described logic and administrative unit 81 collect the various information of tested safety tongs.

2) unusual service condition, when described test rack 5 falls to h2 height, if described TT&C system finds tested safety tongs partial failure, described test rack 5 continues fall and do not take urgent measure, when test rack 5 falls to h4 height, described test rack 5 enters the permanent magnet braking stage, described action control unit 81 controls described permanent magnet braking system acting, absorbs the kinetic energy of described test rack, if when arriving ground, described test 5 does not stop, then absorb remaining kinetic energy by described shock absorber;

When described test rack 5 falls to h2 height, if described TT&C system finds that tested safety tongs lost efficacy, then described logic and administrative unit 81 send control command to described action control unit 84, control the insurance safety tongs action in the middle part of described test rack 3, and control described permanent magnet braking system acting; If described insurance safety tongs also lost efficacy simultaneously, described test rack 5 continued to fall, and when falling to height h4, described kinetic energy is then absorbed by above-mentioned permanent magnet braking system and shock absorber.

In process of the test, described logic and administrative unit 81 judge that described safety tongs is in partial failure state or failure state, the test rack acceleration information measured in real time is transferred to described logic and administrative unit 81 by described data acquisition unit 83 by the acceleration pick-up on described test rack 5, when above-mentioned height h1, described logic and administrative unit 81 calculate the accekeration of described test rack, and compare with the acceleration range of the inefficacy pre-set and partial failure, judge its scope fallen into, and then send different control commands to described action control unit 84.

Work as a=a ₁time, described safety tongs is in normal working;

Work as a ₂< a < a ₁time, described safety tongs is in partial failure state, and described in this process, the stopping distance of test rack 5 is very long;

As a≤a ₂time, described safety tongs is in failure state;

Wherein, described a represents the acceleration/accel of safety tongs, a ₁and a ₂for the definite value that described logic and administrative unit 81 pre-set, it sets according to the speed of the height of described pylon and test rack 5.

The bumper tests process of described descending pilot system is as described below.

When testing, described logic and administrative unit 81 send a control command to described action control unit 84, described hydraulic ram 62 bounces back, and drives described upset movable decking 63 to turn to level attitude, and described energy disperser 61 is placed in below described upset movable decking 63, described logic manage and control unit 81 according to the requirement of described test rack 5 velocity of impact to described action control unit 84 sending controling instruction, described test rack 5 is risen to predetermined altitude by described electric block 21, and trigger the trigger unit action of described release gear 4, described test rack 5 discharges by described release gear 4, make its free fall, clash into described shock absorber 6, in this knockout process, the sensor that described shock absorber 6 is arranged measures its stroke automatically, speed, the measurement parameters such as acceleration/accel, and this parameter is transferred to described logic and administrative unit 81 through data acquisition unit 83, carry out analysis for it to judge, in this process, described real-time controlling unit 82 obtains the Information Monitoring of described data acquisition unit 83 in real time, and carries out adaptive adjustment to the state of each proving installation, ensures the normal operation of each proving installation.

Described logic and administrative unit 81 are when controlling described permanent-magnet eddy current linear brake system acting, first according to the acceleration/accel of current test frame 5, select suitable braking force, remaining kinetic energy after stopping distance required for it and permanent magnet braking are completed is in rational scope, ensure that described shock absorber 6 can normally work, in permanent magnet braking process, braking force keeps constant, the end, upper end of described braking guide rail 191 is provided with a displacement pickup, in order to measure described test rack 5 in the instantaneous acceleration entering the permanent magnet braking stage, laser sensor on itself and guide rail, accelerometer on test rack 5, the acceleration/accel of described test rack 5 measured jointly by rotary encoder on motor, and the information transmission of collection is carried out analyzing and processing to described logic and administrative unit 81, and by described action control unit 84 sending controling instruction, regulate the electric current in magnet steel group 192 in described permanent-magnet eddy current linear brake system, regulate its magnetic-field intensity.

Refer to shown in Figure 12, the electric current of its eddy current system being elevator pilot system of the present invention and acceleration/accel graph of a relation, in figure, I represents the electric current in magnet steel group 192, and a represents that described test rack 5 enters the instantaneous acceleration of end, described braking guide rail 191 upper end, a ₁and a ₂the critical acceleration value that the safety tongs pre-set for described logic and administrative unit 81 normally works and lost efficacy, as we know from the figure, a value of described test rack 5 increases, and the electric current in corresponding magnet steel group 192 increases.Shown in formula (2), it is electric current and the acceleration function relational expression of the eddy current system of elevator pilot system of the present invention.

In formula, d represents the clearance distance between braking guide rail 191 end and magnet steel group 192 end, and m represents that described test rack 5 has loaded the total mass of counterweight, α is the dutycycle of magnet steel group 191, the i.e. width of every magnet steel group and the ratio that has, h is the total length of braking guide rail 192 for braking the conductivity of guide rail, a represents that described test rack 5 enters the instantaneous acceleration of end, described braking guide rail 191 upper end, I ₀for 2. being calculated the critical electric current value of gained by formula.

The program of above-mentioned acceleration/accel and electric current is stored in described logic and administrative unit 81, known from formula, as a < a ₁time, safety tongs is in normal working, and it can realize the braking of test rack 5, without the need to Permanent magnet eddy-current brake; Work as a ₁≤ a < a ₂time, safety tongs is in partial failure state, and now, the braking procedure of test rack 5 is completed jointly by described safety tongs, permanent magnet braking system, in the stroke of braking guide rail 191, and the kinetic energy of test rack 5 described in absorption portion; As a>=a ₂time, safety tongs is in total failure mode, and now, the kinetic energy of test rack 5 is absorbed jointly by permanent magnet braking system and shock absorber 6, and permanent magnet braking power is now comparatively large, ensures braking guide rail 192 energy as much as possible, to protect shock absorber 6.

In the present invention, up test pylon and descending test pylon are linked together by truss; described up pilot system comprises test rack, counterweight, counterweight handler, shock absorber, bont and electric-control system etc.; it is tested for protection device for over-speed ascending, comprises the test of traction machine brake, wire holder and up safety tongs.

The frame structure of described up pylon and descending pylon is similar, it is made up of column, crossbeam and truss support, guide rail is connected and fixed by rail mounting bracket and described column, and support body hollow bulb arranges various experimental set-up, and described pylon side is also provided with cat ladder.

Described protection device for over-speed ascending and process of the test as described below.

Refer to shown in Figure 13, the schematic diagram of the component devices that its up-running over-speed protection for the up pilot system of the present invention is tested, described bont comprises the driving towing machine 91 being arranged on tower top, assembly pulley 92, be arranged on tested towing machine 96 and the magnetic clutch of pylon bottom, described pylon bottom is provided with towing machine mount pad 97, described tested towing machine 96 is arranged on described towing machine erecting stage 97, described tested towing machine 96 is connected with a test rack 94 by a lifting rope and pulley, the installation site of described pulley can horizontal adjustment, the cornerite of running wheel is dragged with adjustment, lifting rope walks around the pulley of counterweight frame 93 upper end, described lifting rope end winding support is on pylon.

Described driving towing machine 91, in order to provide power with the associated working of tested traction unit 96, rapidly test rack 94 speed uplink is risen to test speed, saves the acceleration distance of test rack; When reaching speed needed for test, described logic and administrative unit 81 drive described action control unit 84 that described driving towing machine 91 is quit work, be separated from described up pilot system by described driving towing machine 91, then can test the deceleration and stopping performance of tested towing machine.

Described pylon column is also installed a wire holder mount pad 95, is provided with wire holder; Described test rack 94 is provided with up safety tongs; Described test rack 94 is provided with pulley, described bont is promoted by pulley, described test rack 94 is also provided with safety tongs trigger mechanism, it comprise machinery trigger and electricity trigger, its structure and worked biography identical with the flip flop equipment of above-mentioned descending pilot system; Be provided with shock absorber bottom described test rack 94, during in order to ensure that described test rack 94 surprisingly falls, reduce the impact to pylon and ground.

Refer to shown in Figure 14, its be the counterweight frame of the up pilot system of the present invention face structural representation, its structure is similar to described test rack 93, comprises and clashes into seat 943, trigger mechanism 942, lock dog 941 and the counterweight 70 that loads on it; Described counterweight frame 93 is contrary with the sense of motion of described test rack 94, and the safety tongs trigger mechanism 942 on it is controlled by preset order by described electrical controller; Counterweight handler in process of the test, electrical controller are identical with above-mentioned descending pilot system.

The process of the test of described protection device for over-speed ascending is as described below.

Towing machine brake test: described logic and administrative unit 81 are to described action control unit 84 sending controling instruction, control described counterweight handler and on described test rack 94 and described counterweight frame 93, load counterweight according to the test weight preset, after weight sensor on described test rack 94 detects the weight on described test rack 94, described weight information is transferred to described logic and administrative unit 81 through described data acquisition unit 83, described logic and administrative unit 81 according to the test program arranged in it to described action control unit 84 sending controling instruction, described action control unit 84 drives described driving towing machine 91 and tested towing machine 96 action, under the effect of described counterweight frame 93, rapidly described test rack 94 is risen to test speed, be arranged on the speed sensor on described test rack 94, laser sensor on guide rail, after rotary encoder on motor detects the pre-set velocity of described test rack 94, by this information transmission to described logic and administrative unit 81, described logic and administrative unit 81 send control command, the magnetic clutch of towing machine 91 is driven to disconnect, and cut off the power supply of tested towing machine 96, described logic and administrative unit 81 control the drg of closed tested towing machine 96, described TT&C system is by being arranged on the accelerometer on described test rack 94, rotary encoder on weight sensor and motor, the metrical information of the laser sensor on the guide rail of test rack 94 obtains the parameter information of tested traction machine brake, and transfer to described logic and administrative unit carries out recording and storing.

In the present invention, adopt the mode driving towing machine and tested towing machine to combine driving, test failure or meet accident cause the deceleration/decel of test rack too low or cannot up deceleration time, described TT&C system recloses and drives towing machine 91, utilize and drive towing machine 91 and up safety tongs emergency braking, the running velocity of the described counterweight frame 93 of rapid reduction, finally by the shock absorber bottom the mounting guide rail being arranged on counterweight frame 93, the dump energy that absorption test produces.

For ensureing that the Information Monitoring of described sensor can meet the processing demands of described logic and administrative unit 81, described logic and administrative unit 81 control the time gap of the Information Monitoring of described sensor, refer to shown in Figure 15, it is the acquisition time interval of sensor of the present invention and the curve synoptic diagram of speed, the acquisition time interval of described sensor reduces with the increase of speed, namely the speed of described test rack 94 is larger, and time gap is less, and the data message gathered in the same time is more accurate; Shown in formula (3), it is the relation function expression formula of sensor Information Monitoring time gap of the present invention and speed;

$t=\mathrm{lo}{g}_a\frac{k}{m}v---\left(3\right)$

Wherein, t represents that sensor obtains the time gap of the movable information of test rack 94, and v represents the speed of test rack, m represents the total mass of test rack 94,0 < a < 1, determined by test rack 94 and sensor, k represents the inherent parameters of sensor.

Time above-mentioned, the operation program of m-velocity function is stored in described logic and administrative unit 81, and it makes described test structure more accurate.

Wire holder is tested with up safety tongs: this experimental set-up is identical with the experimental set-up of towing machine velocity limiter, only described tested towing machine assembly pulley need be substituted before test, it is same as described above that TT&C system loads and unloads counterweight process in described counterweight frame 93, and this repeats no more; After loading by preset weight, described logic and administrative unit 81 control described driving towing machine 91 according to the test program preset in it and work, rapidly test rack speed uplink is risen to test speed, afterwards, the up safety tongs controlling closed described tested wire holder or trigger on described test rack 94, described TT&C system measures the parameter of described tested wire holder or up safety tongs automatically, and transfers to described logic and administrative unit 81 carries out recording and processing.In this process, the state that in described real-time controlling unit 82 pairs of processs of the test, each device is preset controls in real time, makes it according to the characteristics of motion motion preset.

In process of the test, described test rack 94 and counterweight frame 93 by respective track installation, are provided with between bottom both and compensate rope, for compensating the changes in weight of steel rope group in up pylon; Tested towing machine 96, driving towing machine 91, test rack 94 are connected by steel rope, assembly pulley with counterweight frame 93; Test rack 94 and counterweight frame 93 are along respective orbital motion, test rack 94 and counterweight frame 93 are all provided with insurance safety tongs and corresponding safety tongs flip flop equipment, when such as have a power failure, disconnected rope etc. surprisingly occurs, described TT&C system can trigger insurance safety tongs automatically, can effectively test rack 94 described in stop and counterweight frame 93, prevent accident.

Can also test velocity limiter in the present invention, device and the process of described velocity limiter test are as described below.

Refer to shown in Figure 16, the schematic diagram of its component devices being velocity limiter pilot system of the present invention, described velocity limiter pilot system is attached to the bottom in the steel structure of described up pylon, and it comprises hoisting mechanism 102, counterweight releasing mechanism 104, counterweight frame 106, detecting device 103, steel wire rope tensioning mechanism 105, shock absorber 108, guide rail and tested velocity limiter 107; Described tested velocity limiter 107 is positioned at described pylon bottom, steel rope walks around the track adjusting wheel 101 on the platform of pylon upper end, described counterweight releasing mechanism 104 is connected again through a hoisting mechanism 102, described counterweight releasing mechanism 104 is connected with described hoisting mechanism 102, can carry out automatic hitch, lifting and unhook to counterweight 70, the release gear in itself and above-mentioned descending pilot system is similar, which is provided with electromagnetism trigger unit and hook, after the control command accepting described TT&C system, start action; Described counterweight 70 is loaded in described counterweight frame 106, described counterweight frame 106 is equivalent to above-mentioned test rack, described counterweight frame 106 upper and lower side is connected with steel rope, it is at the trial along described guide rail movement, be provided with pulling force sensor and speed sensor, in order to acceleration/accel and the velocity information of counterweight frame 106 described in Real-time Obtaining; Described counterweight frame 106 is arranged with shock absorber 108, and it is in order to absorb the kinetic energy that falls of described counterweight frame 106, protection test device; Described guide rail is also provided with a steel wire rope tensioning mechanism 105, in order to tensioning steel rope; Described detecting device 103 is provided with tensile force sensor, in order to measure pulling force, the acceleration information of described steel rope.

Velocity limiter test of the present invention still adopts above-mentioned TT&C system to carry out measuring and controlling, during test, described logic and administrative unit 81 are to described action control unit 84 sending controling instruction, control described hoisting mechanism 102 and described counterweight frame 106 is promoted to predetermined altitude, and discharge, the action of described counterweight frame 106, when arriving predetermined speed, the action of described tested velocity limiter 107, simultaneously, accelerometer on described counterweight frame 106, sensor in pulling force sensor and proving installation 103, rotary encoder on drive motor, measure the displacement of described steel rope and counterweight frame 106, pulling force, speed and acceleration information, and this information is transferred in described logic and administrative unit 81 through data acquisition unit 83 carry out recording and processing, if counterweight frame 106 falls to bottom pylon, then described shock absorber 108 absorbs its drop energy.

The foregoing is only preferred embodiment of the present invention, is only illustrative for the purpose of the present invention, and nonrestrictive.Those skilled in the art is understood, and can carry out many changes in the spirit and scope that invention claim limits to it, amendment, even equivalence, but all will fall within the scope of protection of the present invention.

Claims (9)

1. a permanent-magnet eddy current linear brake system for elevator test, it is characterized in that, it is in the safety tongs testing experiment of elevator pilot system, and when safety tongs lost efficacy, braking is mounted with the test rack of described safety tongs, and it controls by a TT&C system, and it comprises:

One magnet steel group, it is arranged on the diagonal angle of described test rack both sides, and it comprises a series of along test pylon upright post vertical to the extremely relative magnetic links of N, S of arrangement, and its two poles of the earth produce high-intensity magnetic field;

One braking guide rail, it is positioned at the bottom of described test pylon, and its two ends rail mounting bracket is fixed on the crossbeam of described test pylon, and its cross section is T-shaped, and its one end is stretched in the space between described N, S pole, produces relative motion with described magnet steel group;

The permanent-magnet eddy current linear brake system of described elevator test also comprises a transverse moving mechanism, it is arranged on the crossbeam of described test pylon, with the end part aligning of described braking guide rail, it is connected with described braking guide rail, order about described braking guide rail at transverse shifting, change to make the area of contact between described braking guide rail and magnet steel group.

2. the permanent-magnet eddy current linear brake system of elevator test according to claim 1, it is characterized in that, described permanent-magnet eddy current linear brake system also comprises a guiding mechanism, is provided with a pilot bar, when described braking guide rail transverse shifting, it is described braking guide rail guiding.

3. the permanent-magnet eddy current linear brake system of elevator test according to claim 1 and 2, it is characterized in that, described transverse moving mechanism comprises a motor, a leading screw and a nut, wherein, described nut is provided with described braking guide rail.

4. the permanent-magnet eddy current linear brake system of elevator test according to claim 3, it is characterized in that, the structure at the two ends of described braking guide rail comprises:

A junction, it is connected with described nut, and plays motion with one;

One induction end, in the space between its N, S pole being partly or entirely placed in described magnet steel group, the magnetic field induction directly produced with described magnet steel group, generation eddy current magnetism;

One guide groove, it in order to hold the pilot bar on described guide frame in transverse shifting process, and it is symmetricly set on the two ends of described braking guide rail.

5. the permanent-magnet eddy current linear brake system of elevator test according to claim 1, it is characterized in that, distance between described braking rail end and magnet steel group end reduces with the increase of the quality of described test rack, to change described magnet steel group and the area of contact of braking guide rail, and then change the braking force of described permanent-magnet eddy current linear brake system.

6. the permanent-magnet eddy current linear brake system of elevator test according to claim 2, it is characterized in that, described permanent-magnet eddy current linear control system also comprises a weight sensor, it is arranged on described test rack, it is in order to measure the quality of described test rack after having loaded counterweight, and weight information is transferred to described TT&C system, described TT&C system controls described transverse moving mechanism according to this quality.

7. the permanent-magnet eddy current linear brake system of elevator test according to claim 2, it is characterized in that, described permanent-magnet eddy current linear control system also comprises a displacement pickup, it is arranged on the end of the upper end of described braking guide rail, in order to measure described test rack in the instantaneous acceleration entering the permanent magnet braking stage.

8. the permanent-magnet eddy current linear brake system of the elevator test according to claim 6 or 7, it is characterized in that, described TT&C system comprises a logic and administrative unit, be stored with the motor program of each mechanism of described permanent-magnet eddy current linear brake system, it is according to the Information Monitoring of each sensor, according to each mechanism kinematic of permanent-magnet eddy current linear brake system described in the programming control preset.

9. the permanent-magnet eddy current linear brake system of elevator test according to claim 2, it is characterized in that, the structure at the two ends of described braking guide rail also comprises a block, it is positioned at the both sides of described braking guide rail, for limiting the traverse range of described braking guide rail, wherein side block contacts with described guiding mechanism, and opposite side block contacts with described pylon.