CN2163804Y - High-speed chain-type air hoist - Google Patents

Abstract

The utility model discloses a high-speed chain-type air hoist, which is particularly suitable for modern big production lines of mine, chemical industry, shipbuilding, automobile industry, etc. The utility model takes a hoisting rack combination as the center. The upper part of the utility model is connected with an upper hoisting hook combination, and the lower part is connected with the lower hoisting hook combination, A ground control valve is arranged above the lower hoisting hook combination. The left end and the right end of the hoisting rack combination are provided with a motor and a decelerator. The upper part of the motor is provided with a safety valve and a silencer, and the lower part of the motor is provided with a distributor valve. Besides the structure, the utility model also has various optimization designs, such as the pneumatic forced braking, the aligning mechanism of hoisting chain wheels, the limited flexible linkage between the hoisting chain wheel and the decelerator, the thrust bearing positioned between a planetary wheel and a planet carrier, etc. The utility model has the advantages of advanced process, good performance and high safety.

Description

High-speed chain-type air hoist

The utility model be a kind of be the pneumatic cucurbit of quick chain type of propulsion source with the pressure wind.Be specially adapted on the modern big manufacturing line such as mine, chemical industry, shipbuilding, Automobile manufacturing.

Pneumatic cucurbit of the same type in the prior art, its brake equipment adopts brake application by spring.Spring easily produces tired under frequent impact effect, the spring after the fatigue can promote that non-loaded piston overcomes and plunger shaft between friction force reset, but be extremely insecure to the motor brake activation of high speed revolution under the load.Therefore often cause braking ineffective, the landing position is inaccurate, load glides, and causes the person, equipment breakdown when serious.

Its chain hoist wheel is the dead axle assembling, and chain hoist wheel and retarder are to be rigidly connected.This structural requirement assembly quality height, the part processing difficulty is big, and manufacturability is poor.Because the accumulation of the error height during general assembly causes assembly precision low, transmission is dumb, and speed is low, the fault rate height.Especially problem is more outstanding under the load: because the action of gravity of load, each part at the position that is rigidly connected also will be subjected to the interference of the very big diametral load that produces owing to load in the running except that being subjected to moment of torsion, cause the badly broken of part, parking.This is the high major cause of fault rate.

Secondly the cooperating of satellite gear and star frame in retarder, there is not thrust baring between axially, adopted little gap to assemble.Because radial missing and position error in the processing of the star axle axis hole on the star frame, star-wheel produces and moves axially under the load, causes the serious friction of star-wheel end face and star frame two medial surfaces, in addition occur grinding mutually into and stop, star-wheel, star frame decrease and major failure such as break.

The purpose of this utility model is to overcome weak point of the prior art, and a kind of pneumatic forced brake is provided, chain hoist wheel automatic aligning structure, and chain hoist wheel and retarder are limited flexibly connecting, the pneumatic cucurbit of little, the lightweight quick chain type of volume.Reach handy flexibly, safe and reliable.Pneumatic Ground Control valve and distributing valve are realized stepless change, make the operator answer the gains in depth of comprehension hand as holding motor switch.

For achieving the above object, the utility model adopts following project organization:

The pneumatic cucurbit of a kind of quick chain type is combined into the upper end, center with upending frame and connects the hook combination, and the lower end connects suspension hook combination down with chain.The Ground Control valve places down on the suspension hook combination.At the two ends, the left and right sides of upending frame combination symmetry assembling motor and retarder.Motor is installed distributing valve below with top symmetrically safety valve and the silencer installed of axis.

Accompanying drawing has provided specific embodiments of the present utility model:

Fig. 1 is this pneumatic cucurbit mounting structure front view;

Fig. 2 is this pneumatic cucurbit motor configuration part sectional view;

Fig. 3 is that this pneumatic cucurbit upending frame is in conjunction with part sectional view;

Fig. 4 is this pneumatic cucurbit reducer structure semisectional view;

Fig. 5 is this pneumatic cucurbit muffler structure part sectional view;

Fig. 6 is this pneumatic cucurbit distributing valve structure partial cutaway view;

Fig. 7 is this pneumatic cucurbit Ground Control valve arrangement semisectional view;

Fig. 8 is this pneumatic cucurbit safety valve structure part sectional view.

Fig. 1 has shown the overall structure of this pneumatic cucurbit.It is that the upper end, center connects hook in conjunction with 5 with upending frame in conjunction with 6, and suspension hook was in conjunction with 9 under the lower end connected with chain 8; Control cock 10 places down on the suspension hook combination.Motor 1 and retarder 7 symmetries are assemblied in the two ends, the left and right sides of upending frame combination; Motor serves as that safety valve 3 and silencer 4 are installed above the symmetry with its axis, and distributing valve 2 is installed below.

Fig. 2 has provided the concrete structure of this pneumatic cucurbit motor.Motor stator 13 and left wall pad 12, right wall pad 15 constitutes osed top motor air compartment.Rotor 17 and blade 14 are assemblied in this air compartment, and two ends of rotor matches with the bearing chamber of casing 11 and the bearing seat 16 on right side respectively with bearing, and above-mentioned each component assembly constitutes motor operations portion in the right chamber of motor casing.Rotor 17 left end shaft stretch in the chamber, a motor casing left side, drg Moving plate 22 is installed on it, this end face of facing left is an annular groove, the groove outer is an interior garden table top, piston type brake disc 20 is housed with dish in the 22 corresponding Box Covers 21, and its right-hand member is that the interior garden table top of outer garden table top and Moving plate 22 matches, coil 20 left sides and casing tegillum 19 formation braking air compartments, form piston mechanism, but the brake disc crank motion is implemented forced brake.The valve pocket of air compartment below spool 18 communicates with the braking air compartment.Safety valve is installed on the casing upward in Moving plate 22 footpaths, and its wedge shape very heavy 74 is corresponding with the gear grooved of Moving plate 22 outer rims, implements emergency brake.

Fig. 3 has provided the concrete structure of this pneumatic cucurbit upending frame combination: the indoor assembling self-aligning bearing 27 of the left and right sides bearing of joining rack 23, and chain hoist wheel 25 is assemblied in the joining rack with bearing 27, and pipe link 26 is contained in the sprocket wheel 25.Joining rack with suspension hook axle 24 and hook in conjunction with being connected.Chain upside in sprocket wheel and the joining rack passes.Its upper end is fixed on the joining rack side, and the lower end is contained in down in the suspension hook box.

Fig. 4 has provided the concrete structure of this pneumatic cucurbit retarder: sun wheel 35 is assemblied in the pinion carrier 32 with the bearing of both sides, satellite gear 30 is assemblied on the star frame with star axle 31, in it with sun wheel 35 outward with decide gear ring 33 and moving gear ring 29 is meshed; A thrust baring 36 and internal tooth bullet pad 37 are respectively put in the star-wheel two ends; Star frame left end cooperates with moving gear ring 29 with bearing, and right-hand member cooperates with Box Cover 34 with bearing.Moving gear ring 29 with bearing with stretch in the left chamber of casing 28 after bearing seat 42 cooperates.Above-mentioned each part is enclosed in the right chamber of casing 28, constitutes speed reduction gearing.Right splined ring 41 and clasp 40 are combined in screw on the cooresponding end axle of hollow center cross 39, and left splined ring 38 and clasp are combined on another corresponding end axle with screw, constitute flexible coupling body.Left and right sides shackle is connected with the right-hand member axle of sprocket wheel 25 and the left end shaft of moving gear ring 29 respectively, has superior universal property.The accumulation of error of general assembly obtains digestion thus, improves assembly process process greatly.

Fig. 5 has provided the concrete structure of this pneumatic cucurbit silencer: garden cylindrical shell 48 upper end assembling shell lids 43, the lower end combines with housing seat 53, constitutes silencer casing.To divide wind bowl 44 in conjunction with last with the spherical crown bolt in the center of case lid, the centre accompanies the shock-reducing rubber pad.Base pipe 45 is tightened on the center of housing seat, and the alternate cover in its top is loaded onto damping bowl 46 and hole bowl 47, and the middle part is overlapped successively and loaded onto hole pad 49, hole rubber cushion 50 and iron wire spiral pad 51, and thick order silk screen 52 and gauze wire 54 are equipped with in the bottom.Above structure forms weary wind and releases from base pipe, forms eddy current again at a minute wind bowl place after by damping bowl, hole bowl, hole pad, hole rubber cushion, spiral pad, thick order silk screen, gauze wire, the exhaust outlet by the housing seat disengages at last.

Fig. 6 has provided the concrete structure of this pneumatic cucurbit distributing valve: spool 58 right-hand members are equipped with piston 59, and the spool left end is connected with spring 56, left end cap 55 and join phoenix door 60 and above-mentioned part is enclosed in the valve body 57 the formation epitrochoidal chamber.Two wind holes at valve body middle part are aimed at two air inlet ducts of motor 1; Power air door 61 is combined in the place, two wind holes of valve body 57 belows.

Fig. 7 has provided the concrete structure of this pneumatic cucurbit Ground Control valve: left and right sides valve block 65 combines with left and right sides valve body 67 respectively, and spool 68 is assemblied in the valve body of the left and right sides; Knob frame 69 and knob 70 are combined in left and right sides valve body front end, constitute left and right sides valve body combination.Left and right sides valve body is in conjunction with the left and right sides that is assemblied in main valve body 66 respectively.Threeway 63 is connected with left and right sides valve block 65 with cored screw 64, and stub (tube) 62 is installed in the wind hole place of main valve body 66 upper ends, more than all combination be contained in the valve body case.

Fig. 8 has provided the concrete structure of this pneumatic cucurbit safety valve: valve body 71 upper ends of awns cellular type are combined with body cap 73, form the shell of valve.Spring 72, piston 75 and wedge shape very heavy 74 are assemblied in the housing, very heavyly stretch out that to extend into the motor detent behind the housing more corresponding with Moving plate 22.

With the high pressure nylon tube distributing valve, control cock, safety valve and Box Cover 21 and wind regime are connected, started wind regime, safety valve is in normal condition, and motor is in braking mode, and complete machine is not worked.

This is the principle of work of the pneumatic cucurbit of chain type fast:

Press Ground Control valve rising knob, pressure wind at first enters by the air channel in the valve body 57 in the valve pocket of spool 18 through air distribution door 60, before spool 18 is pushed away, opens the air port of letting out of braking air compartment, and pressure wind releases, and brake disc 20 is thrown off Moving plate 22 under action of the spring; Before meanwhile pressure wind pushes away piston 59, open power air door, pressure wind enters the motor air compartment, impacts blade 14, drives rotor 17 rotations, motor operations.Pipe link 26 fuses rotor 17 and sun wheel 35, and motor is defeated by retarder with power like this, and lifting sprocket wheel 25 is defeated by power again by the moving gear ring 29 of retarder, realizes lifting.

Stop by the rising knob, spool 18 resets under action of the spring, closes the air port of letting out of braking air compartment, and the pressure wind in spool dead ahead pours the braking air compartment, carries out forced brake; Meanwhile the air distribution door is closed, piston reset, and power air door is closed thereupon, and motor is in braking mode, and complete machine is not worked.

Press the decline knob, motor operations realizes descending; Stop by the decline knob, motor quits work.Principle of work is the same, goes round and begins again.

When the wind regime something unexpected happened, sharply descending as unexpected blowing-out or blast causes the motor can't normal operation, and safety valve releases pressure wind automatically, in the gear grooved of very heavy rapid insertion Moving plate 22 outer rims of its wedge shape, implements emergent safety arrestment.Safety valve was very heavy after wind regime was normal resets the complete machine normal operation.

The utility model has been owing to designed pneumatic forced brake structure, and is provided with relief valve mechanism rightly, reached the sensitieness of cucurbit work and the accuracy of landing; Solved load downslide phenomenon at all.Desired safety and reliability in the production use have been realized.

Since the trim designs of chain hoist wheel the automatic aligning structure, at the design plan that adopts hollow center cross spline to flexibly connect with combining of retarder mouth, solved the severe interference problem between each parts under the load, solved the parts breakage that causes owing to this interference, faults such as parking at all.This is because flexible connect and after the aligning structure solved the power input at all, and except that lifting by crane sprocket wheel, other each parts only bear rotary torque and the interference problem of the great diametral load that produced of stand under load loading power no longer.Has superior universal property.

Owing between satellite gear and star frame, be provided with thrust baring and internal tooth bullet pad, solved the serious friction between star-wheel and star frame fully and ground mutually into phenomenon, prevented the failure problems of star-wheel star frame damage.

This high-speed chain-type air hoist, because the optimal design of each parts, the rational deployment of complete machine structure and assembling make it have the technology advanced person, little in light weight, the fast low noise of speed of compact conformation, volume, flexibly handy, landing accurately, infinitely variable speeds, failure rate is low, the advantage such as safe and reliable.

Claims (8)

1, the pneumatic cucurbit of a kind of quick chain type is characterized in that: is the center with upending frame in conjunction with (6), and the upper end connects hook in conjunction with (5), and suspension hook was in conjunction with (9) under the lower end connected with chain (8), and Ground Control valve (10) is arranged on down suspension hook in conjunction with on (9); At left and right sides symmetry assembling motor (1) and the retarder (7) of upending frame in conjunction with (6); Motor (1) is gone up with top symmetrically safety valve (3) and the silencer (4) installed of its axis, the following distributing valve (2) of installing.

2, pneumatic cucurbit according to claim 1 is characterized in that: the drg of motor (1) is a pneumatic forced brake mechanism; Its formation is: a Moving plate (22) is installed on the left end shaft of motor rotor (17), dish (22) left side is provided with annular recess, its groove outer is a garden platform shape brake surface, and dish is equipped with piston type brake disc (20) accordingly in motor casing (21) therewith, forms piston structure; Dish (20) right-hand member is an outer garden table top, matches with Moving plate (22) groove; The tegillum (19) of the left side of brake disc (20) and motor casing constitutes the braking air compartment.

3, pneumatic cucurbit according to claim 1 is characterized in that: upending frame is in conjunction with being provided with the lifting sprocket wheel (25) that is in limited free state in (6), and it is assemblied in the joining rack (23) with a pair of self-aligning bearing (27) on its two end axles; Sprocket wheel (25) is a hollow structure, and right-hand member is male splined shaft and stretches out outside the joining rack right side, pipe link (26) is housed in the sprocket wheel (25).

4, pneumatic cucurbit according to claim 1 is characterized in that: be provided with thrust baring (36) and internal tooth bullet pad (37) between the both ends of the surface of satellite gear (30) and star frame (32) two medial surfaces in the retarder (7).

5, pneumatic cucurbit according to claim 1 is characterized in that: silencer (4) is a damping backspace formula vibration damping noise-reducing structure, and it is by garden cylindrical shell (48), case lid (43), housing seat (53), formation shell; The interior center of case lid (43) will divide wind bowl (44) in conjunction with on it with the spherical crown bolt, and the vibration damping rubber cushion is clamped in therebetween; Base pipe (45) aligning vibration damping suitable for reading rubber cushion, pipe (45) is tightened on the center of housing seat (53), and the alternate cover in its top is loaded onto damping bowl (46) and hole bowl (47); Hole pad (49), hole rubber cushion (50) and iron wire spiral pad (51) are loaded onto in middle part cover successively; The bottom cover is loaded onto thick order silk screen (52) and gauze wire (54), weary wind releases the back from base pipe and forms eddy current after by damping bowl, hole bowl, hole pad, hole rubber cushion, spiral pad, thick order silk screen, gauze wire, the exhaust outlet by the housing seat discharges at last at minute wind bowl.

6, pneumatic cucurbit according to claim 1 is characterized in that: the constituting of distributing valve (2): be equipped with spool (58) in the valve pocket of valve body (57), the right-hand member assembling piston (59) of core (58); Core (58) left end is connected with spring (56), and left end cap (55) constitutes epitrochoidal chamber with air distribution door (60) and valve body (57); Two wind holes, valve body middle part are aimed at two air inlet ducts of motor (1); Power air door (61) is combined in the place, two wind holes of valve body (57) below.

7, pneumatic cucurbit according to claim 1 is characterized in that: the structure of Ground Control valve (10) is that left and right sides valve block (65) combines with left and right sides valve body (67) respectively, and spool (68) is assemblied in the valve body of the left and right sides; Knob frame (69) and knob (70) are combined in the front end of left and right sides valve body, after the valve body combination of the formation left and right sides, are assemblied in the left and right sides of main valve body (66) respectively; Threeway (63) is connected with left and right sides valve block by cored screw (64), and stub (tube) (62) is installed in the upper end, wind hole of main valve body (66), and said mechanism is contained in the clack box.

8, pneumatic cucurbit according to claim 1, it is characterized in that: the structure of safety valve (3) is that valve body (71) upper end is combined with body cap (73), spring (72), piston (75) and wedge shape very heavy (74) assembling very heavyly stretches out that to stretch into the motor detent again behind the housing corresponding with brake disc (22) in the enclosure.

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