CN206827848U

CN206827848U - A kind of passive safety feature on elevator traction machine

Info

Publication number: CN206827848U
Application number: CN201720730659.1U
Authority: CN
Inventors: 孟鹏; 周国鹏
Original assignee: Hubei University of Science and Technology
Current assignee: Hubei University of Science and Technology
Priority date: 2017-06-20
Filing date: 2017-06-20
Publication date: 2018-01-02
Anticipated expiration: 2027-06-20

Abstract

The utility model provides the passive safety feature on a kind of elevator traction machine, belongs to technical field of motors.It solves the technical problems such as existing elevator traction machine passive safety is poor.A kind of passive safety feature on elevator traction machine, rotating shaft has the control terminal and output end for stretching out casing, passive safety feature includes the brake disc one being fixed on casing and the speed limit case being fixed in rotating shaft, some sliding chambers are evenly arranged with speed limit case, each sliding intracavitary is provided with slidable counterweight valve element, it is additionally provided with casing and the one-to-one directed cavity of sliding chamber, sliding chamber communicates with corresponding directed cavity, valve rod is slidably connected in directed cavity, valve rod is connected with a brake(-holder) block, and directed cavity and sliding intracavitary are filled with hydraulic oil；Sliding intracavitary is provided with reed and pressing plate, and reed is placed between counterweight valve element and pressing plate, and the regulator bolts that can be resisted against on pressing plate are provided with speed limit case.The utility model has the advantages that passive safety is preferable, in the absence of pendant terraced situation.

Description

A kind of passive safety feature on elevator traction machine

Technical field

The utility model belongs to technical field of motors, the passive safety feature being related on a kind of elevator traction machine.

Background technology

Elevator traction machine is the power-equipment of elevator, also known as elevator main.Function is that conveying transports elevator with passing power Row, control elevator car are only stopped.It is by motor, brake, shaft coupling, reduction box, traction sheave, frame and directive wheel and affiliated disc The compositions such as driver's wheel.Directive wheel is generally seated on the spandrel girder under frame or frame.Handwheel some is fixed on motor shaft, Also have and usually hang over nearby on wall, be enclosed on again on motor shaft during use.

There are the following problems for existing elevator traction machine：1st, the brake of traditional elevator traction machine is draged by Electronic Control Draw elevator car residing for machine and between the walls, dust debris are more, the debris particularly fallen at door-opened elevator, the control to elevator Part has a great influence；2nd, the brake of traditional elevator traction machine does not have passive safety feature, occurs in abnormal conditions such as power-off When, the danger fallen be present in elevator car；3rd, the brake of traditional elevator traction machine be all by being braked to the rotating shaft after deceleration, Integral stop is realized, its rotating speed of the rotating shaft of deceleration is smaller, and braking effect is more obvious, still, when the rotating shaft at deceleration end is braked, Larger to reduction box impact, the damage and impact to shaft coupling are larger；4th, the shaft coupling of traditional elevator traction machine does not have typically Pooling feature, even if some shaft couplings have pooling feature, it, which is buffered, can not be directed to the actual conditions of elevator and buffer, i.e. Ascending for elevator only stops and the lower whereabouts stopping time, and its impulsive force is different, and it is larger that lower whereabouts stop impulsive force, and is not easy to avoid, descending It is smaller only to stop impulsive force, but is not allow for resilience, if there is resilience, the weightless sense to passenger is stronger, causes boarding uncomfortable； 5th, the reducer structure of traditional elevator traction machine is complicated, is typically realized by bevel gear, and its speed reducing ratio is obtained by repeatedly slowing down, Sacrifice section transmission stationarity.

The content of the invention

The purpose of this utility model is to be directed to above mentioned problem existing for existing technology, there is provided on a kind of elevator traction machine Passive safety feature, technical problem to be solved in the utility model are the increase passive erecting devices of elevator traction machine, improve peace Quan Xing, anti-falling stop railway carriage or compartment.

The purpose of this utility model can be realized by following technical proposal：A kind of passive security dress on elevator traction machine Put, elevator traction machine on motor, motor including having casing and rotating shaft, it is characterised in that the rotating shaft, which has, stretches out casing Control terminal and output end, the passive safety feature include the brake disc one being fixed on casing and the speed limit being fixed in rotating shaft Case, some sliding chambers are evenly arranged with the speed limit case, each sliding intracavitary is provided with slidable counterweight valve element, described It is additionally provided with casing and is communicated with the sliding one-to-one directed cavity of chamber, the sliding chamber with corresponding directed cavity, the guiding Intracavitary slidably connects valve rod, and the valve rod is connected with a brake(-holder) block, and the directed cavity and sliding intracavitary are filled with hydraulic oil；It is described Sliding intracavitary is provided with reed and pressing plate, and the reed is placed between counterweight valve element and pressing plate, and being provided with the speed limit case can The regulator bolts being resisted against on pressing plate.

The linear velocity of elevator traction machine haulage cable needs to control uniformly, and excessive if there is speed, counterweight valve element squeezes The hydraulic oil of the sliding intracavitary of pressure, moves down valve rod, valve rod promotes brake(-holder) block to be contacted with brake disc one, causes the linear velocity of steel wire rope to subtract Small, untill the centrifugal force of counterweight valve element is not enough to promote brake(-holder) block to contact with brake disc one, the linear velocity of steel wire rope is controlled Make in a certain setting value, when elevator control circuit or power failure, elevator car can be landed with stable speed, in the absence of pendant ladder Situation occurs.

Hydraulic oil can improve the stability of rotation of rotating shaft.

Pressing plate and reed can adjust the pressure of the sliding chamber of counterweight valve element compression, can make reed by adjusting regulator bolts Compression degree change, so as to adjust the standard of the limited speed of this traction machine.

In passive safety feature on a kind of above-mentioned elevator traction machine, alternatively, the sliding intracavitary is set The control device that can promote counterweight valve element to movement on the outside of sliding chamber is equipped with, the control device includes a hydraulic cylinder, the hydraulic pressure The push rod of cylinder is fixedly linked with counterweight valve element.The hydraulic cylinder is controlled by control valve, and control valve is controlled by external circuit, can Brake is assisted to be braked.

Compared with prior art, the utility model has advantages below：

1st, the linear velocity of elevator traction machine haulage cable needs to control uniform, counterweight valve element excessive if there is speed The hydraulic oil of the sliding intracavitary of extruding, moves down valve rod, valve rod promotes brake(-holder) block to be contacted with brake disc one, causes the linear velocity of steel wire rope Reduce, untill the centrifugal force of counterweight valve element is not enough to promote brake(-holder) block to contact with brake disc one, the linear velocity quilt of steel wire rope Control in a certain setting value, when elevator control circuit or power failure, elevator car can be landed with stable speed, in the absence of pendant ladder Situation occur.

2nd, pressing plate and reed can adjust the pressure of the sliding chamber of counterweight valve element compression, can make spring by adjusting regulator bolts The compression degree of piece changes, so as to adjust the standard of the limited speed of this traction machine.

Brief description of the drawings

Fig. 1 is the overall structure diagram of this traction machine.

Fig. 2 is the sectional view on A directions in Fig. 1.

Fig. 3 is the sectional view on B directions in Fig. 1.

Fig. 4 is the sectional view on C directions in Fig. 1.

Fig. 5 is the sectional view on D directions in Fig. 1.

Fig. 6 is the circuit theory schematic diagram of TRT, brake and coil.

Fig. 7 is the enlarged drawing of part-structure in Fig. 1.

In figure, 11, motor；12nd, casing；13rd, rotating shaft；14th, control terminal；15th, output end；21st, brake disc one；22nd, speed limit Case；221st, sliding chamber；222nd, directed cavity；23rd, counterweight valve element；24th, valve rod；25th, brake(-holder) block；26th, reed；27th, pressing plate；28th, pressure regulation Bolt；31st, master gear；32nd, side plate one；33rd, side plate two；34th, planetary gear；35th, output gear；36th, output shaft；41st, rotating disk； 42nd, chute；43rd, brake disc two；44th, cylinder；45th, controller；46th, piezo-resistance；47th, insertion end；48th, it is raised；51st, rotor； 52nd, permanent magnetism iron stator；53rd, shell；54th, coil；61st, internal axle sleeve；62nd, limited block one；63rd, inserted sheet one；54th, inserted sheet two；65th, it is outer Axle sleeve；66th, limited block two；67th, jack one；68th, jack two；69th, avoid holes；71st, energy-absorbing piece；72nd, buffer spring.

Embodiment

It is specific embodiment of the utility model and with reference to accompanying drawing below, the technical solution of the utility model is made further Description, but the utility model is not limited to these embodiments.

As shown in Figure 1, Figure 2 and Figure 3, there is casing 12 and rotating shaft 13 on elevator traction machine, including motor 11, motor 11, Decelerator and brake are provided between casing 12 and rotating shaft 13, rotating shaft 13 has the control terminal 14 and output end for stretching out casing 12 15, passive safety feature is provided with output end 15, passive safety feature includes the He of brake disc 1 being fixed on casing 12 The speed limit case 22 being fixed in rotating shaft 13, some sliding chambers 221 are evenly arranged with speed limit case 22, be respectively provided with each sliding chamber 221 Have slidable counterweight valve element 23, be additionally provided with casing 12 with the sliding one-to-one directed cavity 222 of chamber 221, sliding chamber 221 with it is right The directed cavity 222 answered is communicated, and valve rod 24 is slidably connected in directed cavity 222, and valve rod 24 is connected with a brake(-holder) block 25, directed cavity 222 and sliding chamber 221 in be filled with hydraulic oil；The linear velocity of elevator traction machine haulage cable needs control uniform, if there is Speed is excessive, the hydraulic oil in the sliding chamber 221 of the extruding of counterweight valve element 23, moves down valve rod 24, valve rod 24 promotes brake(-holder) block 25 and system Moving plate 1 contacts, and causes the linear velocity of steel wire rope to reduce, until the centrifugal force of counterweight valve element 23 is not enough to promote brake(-holder) block 25 Untill being contacted with brake disc 1, the linear velocity of steel wire rope is controlled in a certain setting value, when elevator control circuit or power failure When, elevator car can be landed with stable speed, be occurred in the absence of the situation of pendant ladder；The rotation that hydraulic oil can improve rotating shaft 13 is put down Stability.

Reed 26 and pressing plate 27 are provided with sliding chamber 221, reed 26 is placed between counterweight valve element 23 and pressing plate 27, speed limit case The regulator bolts 28 that can be resisted against on pressing plate 27 are provided with 22；Pressing plate 27 and reed 26 can adjust counterweight valve element 23 and compress The pressure of sliding chamber 221, can change the compression degree of reed 26, so as to adjust this traction machine by adjusting regulator bolts 28 Standard of the limited speed.

As shown in Figure 1 and Figure 4, decelerator include fixed setting output end 15 on master gear 31, in master gear 31 The side plate 1 of side and the side plate 2 33 positioned at the outside of master gear 31, be provided between side plate 1 and side plate 2 33 several with The planetary gear 34 that master gear 31 engages, this decelerator also include one the output gear 35 with ring gear, output gear 35 with Each planetary gear 34 is engaged, and output shaft 36 is fixedly installed on output gear 35；Planetary gear 34 is transmitted by master gear 31, will The rotating speed of rotating shaft 13 reduces, and is then passed to output shaft 36, this decelerator passes through side plate 1, side plate 2 33 and output gear 35 Master gear 31 and planetary gear 34 are clamped, improve transmission stability, and it is simple and reliable for structure, slow down bigger.

As shown in Figure 1 and Figure 7, brake includes the rotating disk 41 being connected by spline with control terminal 14, is opened up on rotating disk 41 There are two annular chutes 42, brake disc 2 43 corresponding with two chutes 42 is provided with casing 12, brake disc 2 43 can Corresponding to being plugged in chute 42, some cylinders 44 are provided between two chutes 42, between the push rod and rotating disk 41 of cylinder 44 It is connected by plane bearing；Brake disc 2 43 can be contacted after the tension of rotating disk 41, and retarding braking is realized by friction.

Cylinder 44 is connected with a controller 45, and controller 45 is connected with a piezo-resistance 46；The cross section of chute 42 is in ladder Shape, the outboard end of brake disc 2 43 are provided with insertion end 47 corresponding with chute 42.The structure increases friction lifting surface area, carries High severity of braking, can realize that moment only stops.

The bottom of chute 42 is provided with some raised 48；Projection 48 is made up of quality of rubber materials；It is raised made of quality of rubber materials 48 are able to ensure that the accuracy only stopped, and are not in the situation of skidding；Raised 48 pairs of brake disc disks two contacted have one Fixed cushioning effect, on the premise of precisely only stopping, weaken impact as far as possible, avoid parts from being damaged, because brake is set Put in control terminal 14, its rotating speed is higher, and moment of torsion is smaller, being capable of fast accurate braking by friction and flexible limit.

As shown in fig. 6, wherein, S1 is the auxiliary switch of the control place circuit of piezo-resistance 46, for it is emergent or open or The function that rotating speed is controlled by voltage is closed, S2 is the main circuit switch of control cylinder 44, and a generating is provided with control terminal 14 Device, TRT include rotor 51, permanent magnetism iron stator 52 and shell 53, and permanent magnetism iron stator 52 is fixed on shell 53, rotor 51 are fixed in control terminal 14, and coil 54 is wound with rotor 51；By permanent magnet DC motor, rotating shaft 13 to traction machine Rotating speed is detected, and the rotating speed of rotating shaft 13 is faster, and voltage caused by the both ends of coil 54 is bigger, and the signal is limited for countershaft 13 Speed；Coil 54 is connected with piezo-resistance 46；Piezo-resistance 46 is in high-impedance state in specific voltage range, can not trigger control Device 45 processed, after voltage reaches the predetermined value of piezo-resistance 46, circuit is connected, and the voltage at the both ends of coil 54 being capable of trigger controller 45 pairs of cylinders 44 are acted, and cylinder 44 is pulled back, so that brake disc 2 43 rubs with rotating disk 41, countershaft 13 is subtracted Speed, so repeatedly, can be after elevator failure or power-off, to electricity untill the rotating speed rotating speed through-flow less than piezo-resistance 46 The downstream rate of ladder is controlled, so as to anti-falling stop ladder.

As shown in Figure 1 and Figure 5, a shaft coupling is provided with output shaft 36, shaft coupling includes being fixedly installed on output shaft 36 On internal axle sleeve 61, there is limited block 1 on internal axle sleeve 61, be provided with limited block 1 positioned at the side of limited block 1 Curved inserted sheet 1 and inserted sheet 2 64, shaft coupling also include being set in outer shaft 65 on internal axle sleeve 61, in outer shaft 65 With limited block 2 66, be provided with limited block 2 66 jack 1 corresponding with inserted sheet 1 and it is corresponding with inserted sheet 2 64 insert Hole 2 68, some avoid holes 69 is offered on the outer shaft 65 between jack 1 and jack 2 68, this shaft coupling also includes ripple The energy-absorbing piece 71 of line shape, energy-absorbing piece 71 are plugged in avoid holes 69, and the part of energy-absorbing piece 71 is stretched into jack 1 and jack 2 68, The opposite side of limited block 1 is fixedly connected with a buffer spring 72, the both ends of buffer spring 72 respectively with limited block 1 and limit Position block 2 66 is fixedly linked；Shaft coupling connects output shaft 36 and steel wire rope pulling plate, when elevator car goes upward to a certain floor and stopped, Outer shaft 65 extrudes buffer spring 72 with internal axle sleeve 61, and the buffer spring 72 is steel springs, has larger rigidity, delays It is little to rush effect, elevator car is stopped off-position and put precisely；When elevator car comes downwards to a certain floor and stopped, the inserted sheet 1 on internal axle sleeve 61 Inserted respectively in jack 1 and jack 2 68 with inserted sheet 2 64, by the effect of energy-absorbing piece 71, energy-absorbing piece 71 is to inserted sheet 1 Larger cushioning effect is played with inserted sheet 2 64, and can be inhaled by the deformation impact energy to rub with energy-absorbing spring Receive, furthermore, the clamping force of inserted sheet 1 and inserted sheet 2 64 by energy-absorbing spring, it is not easy to be pulled out, make internal axle sleeve 61 and outer shaft Set 65 between resilience impact it is smaller, that is to say, that elevator car it is descending and only when, vibrate and rock smaller.

Alternatively, counterweight valve element 23 can be promoted to the mobile control in the sliding outside of chamber 221 by being provided with sliding chamber 221 Device processed, the control device include a hydraulic cylinder, and push rod and the counterweight valve element 23 of hydraulic cylinder are fixedly linked.The hydraulic cylinder passes through control Valve control processed, control valve are controlled by external circuit, can assist in brake and braked.

Specific embodiment described herein is only to the utility model spirit explanation for example.The utility model institute Category those skilled in the art can make various modifications or supplement to described specific embodiment or using similar Mode substitute, but without departing from spirit of the present utility model or surmount scope defined in appended claims.

Claims

1. the passive safety feature on a kind of elevator traction machine, elevator traction machine on motor (11), motor (11) including having machine Shell (12) and rotating shaft (13), it is characterised in that the rotating shaft (13) has the control terminal (14) and output end for stretching out casing (12) (15), the passive safety feature includes the brake disc one (21) being fixed on casing (12) and the limit being fixed in rotating shaft (13) Fast case (22), the speed limit case (22) is interior to be evenly arranged with some sliding chambers (221), is provided with each sliding chamber (221) Slidable counterweight valve element (23), the casing (12) is interior to be additionally provided with and the one-to-one directed cavity of the sliding chamber (221) (222), the sliding chamber (221) is communicated with corresponding directed cavity (222), and valve rod is slidably connected in the directed cavity (222) (24), the valve rod (24) is connected with a brake(-holder) block (25), and hydraulic oil is filled with the directed cavity (222) and sliding chamber (221)； Reed (26) and pressing plate (27) are provided with the sliding chamber (221), the reed (26) is placed in counterweight valve element (23) and pressing plate (27) between, the regulator bolts (28) that can be resisted against on pressing plate (27) are provided with the speed limit case (22).

A kind of 2. passive safety feature on elevator traction machine according to claim 1, it is characterised in that the sliding chamber (221) control device that can promote counterweight valve element (23) to movement on the outside of sliding chamber (221) is provided with, the control device includes One hydraulic cylinder, push rod and the counterweight valve element (23) of the hydraulic cylinder are fixedly linked.