CN102175480B - Automatic sampling device of bucket-type lifter - Google Patents
Automatic sampling device of bucket-type lifter Download PDFInfo
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- CN102175480B CN102175480B CN 201110033618 CN201110033618A CN102175480B CN 102175480 B CN102175480 B CN 102175480B CN 201110033618 CN201110033618 CN 201110033618 CN 201110033618 A CN201110033618 A CN 201110033618A CN 102175480 B CN102175480 B CN 102175480B
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Abstract
The invention discloses an automatic sampling device of a bucket-type lifter. The automatic sampling device comprises a sampling mechanism, a hydraulic push rod 7 and a programmable controller (PLC) control system. The sampling mechanism comprises a transmission connecting rod 10, a sampling arm transmission mechanism 4, a sampling bucket 3, an accommodating bucket 1 and the like. The sampling arm transmission mechanism 4 consists of a sampling arm 13 and a transmission piece in the sampling arm. The PLC control system comprises a PLC control cabinet 5, an approach switch I for accommodating a coal sample limit, an approach switch II for pouring out the coal sample limit and a hydraulic pump motor or a solenoid directional valve for controlling the contraction of the hydraulic push rod. APLC control circuit in the PLC control cabinet comprises a PLC, a panel operation button, an indicator and relays I and II for controlling the positive and passive rotation of the hydraulic pump motor or the reversion of the solenoid directional valve. The automatic sampling device is applied to a bucket-type lifter of a jigger in a coal preparation plant, is used for sampling coal samples, and can realize automatic and complete section continuous sampling. By the PLC control timing automatic sampling, the safety of operators can be ensured, accuracy is high and labor intensity is alleviated. The automatic sampling device is convenient to assemble and disassemble, and does not influence the overhaul operation for the bucket-type lifter.
Description
Technical field
The present invention relates to coal preparation plant's jig coal sample sampling apparatus, the chapelet automatic sampling apparatus that particularly a kind of automatic coal sampling that is used for coal preparation plant's jig chapelet is used.
Background technology
At present, coal preparation plant's jig chapelet does not all have automatic sampling apparatus, adopts artificial sample.There is following drawback in artificial sample: the one, and following material granularity is bigger, and the coal flow velocity is very fast and the chute width is bigger, during sampling operation there is bigger potential safety hazard in the sample collector; The 2nd, also can cause sampling inaccurate for above-mentioned reasons, not strong to coal separation Operating Guideline property; The 3rd, adopt increment half an hour one time since sampled point in main building and the chamber of drifting along not at same floor, labor intensity of operating staff is big.Along with the raising of coal production with to the raising of quality requirements, the existing method of sampling can not adapt with the construction of quality standardization coal preparation plant, must improve, and realizes the sampling robotization.The automatic sampling device of most domestic manufacturer development at present is to be applied on the rubber conveyer, and still manque report is developed in the robotization of chapelet.
Summary of the invention
Present jig chapelet manual pick coal sample is dangerous in order to solve, poor accuracy, weak point that labour intensity is big; The present invention provides a kind of chapelet automatic sampling apparatus; Can realize automatic coal sampling, sampling safety, accuracy height alleviate labor intensity of operating staff; Installation for convenience detach does not influence the chapelet maintenance.
The present invention solves the problems of the technologies described above the technical scheme that is adopted to be:
The chapelet automatic sampling apparatus mainly is made up of sampling mechanism, hydraulic push rod, PLC control system.Sampling mechanism is made up of kinematic link, rocking arm gear train, sampling hopper, receiving hopper.Hydraulic push rod is through kinematic link and the transmission of sampling arm gear train, promptly the sample sampling bucket spindle of hopper of the output shaft of sampling arm gear train.The sampling arm gear train by sampling arm with and interior driving member constitute.Be constructed as follows:
A. sampling arm has three axles from bottom to top: stationary shaft, rotating shaft, sampling bucket spindle.
A., fixed gear A and fixed gear B are housed on the stationary shaft, connect firmly; The sampling arm two side is stretched out at the stationary shaft two ends, and is fixed on the bearing; The sampling arm two side is contained on the stationary shaft and connects firmly with the connecting rod C of kinematic link, can together rotate around stationary shaft.
B., the gear A that small one and large one gear is formed is housed in the rotating shaft, connects firmly, its two ends are contained on the sampling arm two side, movingly.
C. the bucket spindle of sampling is contained on the sampling arm two side, movingly; Its part in sampling arm is by by being equipped with gear B, ratchet, gear C, energy-storaging spring and spring fixed tray in sampling hopper one side direction successively; Gear B, gear C and sampling bucket spindle movingly, ratchet, spring fixed tray and sampling bucket spindle connect firmly; Be fixed on gear C one side with the ratchet of ratchet engaged, energy-storaging spring one side is fixed on the gear C, and opposite side is fixed on the spring fixed tray; The gear B inner side end has the semi-cylindrical projection, and the radius of the radius>=ratchet of projection semicolumn is fluted on the plane of projection semicolumn axis direction, and groove one side has: when accessing coal sample and the protruding pin T of ratchet
XThe sampling spot Q of contact
Y, the groove opposite side has: when pouring out coal sample and the protruding pin T of ratchet
XThe D of falling the sampling point of contact
Y
B. the fixed gear B on the stationary shaft and the pinion drive of gear A, the gear wheel of gear A is through the gear B transmission of chain A with the sampling bucket spindle; Gear C on the sampling bucket spindle is through chain B and fixed gear A transmission.
C. operating state:
A. access coal sample: rotate when being forward rotation to the coal tub direction around stationary shaft when hydraulic push rod drives sampling arm through kinematic link, the pinion wheel of gear A rolls on fixed gear B and creeps, and gear A and sampling arm rotate in the same way, and chain A driven gear B rotates; Sampling spot Q when gear B projection groove
YForward protruding pin T to ratchet
XDuring contact, drive ratchet and rotate in the same way, the sampling bucket spindle rotates with ratchet, and the sampling hopper overturns to the coal tub direction; Spring fixed tray rotates the energy-storaging spring tensioning in the same way with the sampling bucket spindle; Ratchet turn to ratchet be forward, driven gear C rotates; Simultaneously, fixed gear A does not change, and the rotation of sampling arm makes chain B rotate around fixed gear A, and driven gear C is to rotate with the direction of ratchet switched in opposite; The gear C band the energy-storaging spring reverse rotation, makes it further tensioning; When the sampling hopper moved to coal tub discharging point below, the sampling hopper righted, and the hopper mouth upwards accesses coal sample.
B. pour out coal sample: rotate when being backward rotation to the receiving hopper direction around stationary shaft when hydraulic push rod drives sampling arm through kinematic link; The pinion wheel of gear A backscrolling on fixed gear B is creeped; Gear A and sampling arm rotate in the same way, chain A driven gear B rotation; The protruding pin T of ratchet
XIn the projection groove of gear B, rotate, do not stress; Ratchet blocks ratchet, and ratchet can not reverse under the energy-storaging spring energy accumulating state; Simultaneously, fixed gear A does not change, and the backward rotation of sampling arm makes chain B rotate around fixed gear A; Chain B drives the gear C backward rotation on the sampling bucket spindle; Ratchet on the gear C drives ratchet and rotates, and ratchet drive sampling bucket spindle rotates, and the sampling hopper of sampling bucket spindle outer end keeps mouth upwards.When forwarding the sampling hopper to, sampling arm arrives the receiving hopper top, promptly during the position of falling the coal sample, and the D of falling the sampling point of gear B projection groove
YForward protruding pin T to ratchet
XContact; Simultaneously, ratchet is by the D of falling the sampling point of gear B projection groove
YOutside jack-up, throw off ratchet, energy-storaging spring discharges, and spring fixed tray drives the sampling bucket spindle and rotates, and the upset of sampling hopper, hopper mouth are downward, pour out coal sample.Ratchet rotates simultaneously.Protruding pin T when ratchet
XForward the sampling spot Q of gear B projection groove to
YIn time, blocked, and stops.
The PLC control system is by PLC switch board, spacing near switch I, spacing near switch I I when pouring out coal sample when accessing coal sample, and compositions such as flexible hydraulic pump motor of control hydraulic push rod or solenoid directional control valve.PLC control circuit part in the PLC switch board is made up of the relay I that controls button and pilot lamp, the forwarding rotating of control hydraulic pump motor or solenoid directional control valve switching-over on Programmable Logic Controller PLC, the switch board panel, relay II etc.The circuit of PLC control system connects as follows:
One of input terminal of PLC～four be I
2～I
5, meet input side power supply one end 24L through following signal entering apparatus respectively: 1. automatic starting switch or automatic/hand SS SW
1The automatic switch contact, 2. near switch I, 3. SR SW
2, 4. near switch I I; Scram button SW
7Be serially connected between the input side power supply one end 24L supply terminals L+ corresponding with the PLC input side.
One of output terminal of PLC～four be Q
1～Q
4A terminal in every pair of wire connection terminals meets outgoing side power supply one end X
1, four output terminal Q
1～Q
4Another connection terminal meet outgoing side power supply other end X through following controlled device respectively
2: 1. relay I, 2. relay II, 3. Sampling Machine malfunction indicator lamp 2HL, 4. automatic run indicator 3HL; The normal opened contact of relay I, relay II is gone here and there respectively in the control loop of the positive contactor I of hydraulic pump motor, counter-rotating contactor II, perhaps goes here and there respectively in the control loop of the forward and reverse driving magnetic coil of solenoid directional control valve.
The invention has the beneficial effects as follows:
1. this sampling apparatus can be realized coal preparation plant's jig chapelet sampling robotization, and the timing automatic coal sampling can thoroughly be eliminated the potential safety hazard that artificial sample exists, and guarantees operating personnel's safety.
2. utilize the mechanical hook-up sampling can realize full section continuous sampling, improve the representativeness of coal sample, instruct the jig coal washing better, improve product percent of pass.Reduce labor intensity of operating personnel, save manpower.
3. convenient the dismounting installed, and do not influence the maintenance of chapelet.Dependable performance.
Description of drawings
Fig. 1 is the overall formation synoptic diagram of chapelet automatic sampling apparatus of the present invention.
Fig. 2, the 3rd, the synoptic diagram front view that the sampling arm gear train constitutes, R are to view (right side is looked).
Fig. 4 is the control panel structure synoptic diagram of PLC switch board.
Fig. 5 is the circuit interconnect pattern of PLC control system.
Among the figure: 1-receiving hopper, 2-coal tub, 3-sampling hopper, 4-sampling arm gear train, 5-PLC switch board, 6-hydraulic power unit, 7-hydraulic push rod, 8-are near switch I (SQ
1), 9-is near switch I I (SQ
2), the 10-kinematic link; 11-bearing, 12-energy-storaging spring, 13-sampling arm, 14-fixed gear A, 15-fixed gear B, 16-gear A, 17-chain A, 18-gear B, 19-ratchet, 20-ratchet, 21-gear C, 22-sampling bucket spindle, 23-spring fixed tray, 24-bearing, 25-stationary shaft, 26-rotating shaft, 27-chain B, 28-connecting rod A, 29-connecting rod B, 30-connecting rod C; T
X-protruding pin, Q
Y-sampling spot, D
Y-fall sampling point; 31-power light (1HL), 32-Sampling Machine malfunction indicator lamp (2HL), the automatic run indicator of 33-(3HL), the manual SS (SW of 34-
1), the automatic selector switch (SW of the manual crawl of 35-/manually
3), 36-SR (SW
2), 37-manually controls start button (SW
4), 38-forwarding button (SW
6), 39-back (SW
7), 40-scram button (SW
5), K1-relay I, K2-relay II, 1KM-contactor I, 2KM-contactor II.(annotate: " button " is the abbreviation of pushbutton switch.)
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is described further.
Because the chapelet automatic sampling apparatus is installed in the discharging chute of chapelet, physical dimension is restricted.To conveniently remove in addition, can not influence the maintenance of chapelet.So the each several part of Sampling Machine uses axle to connect or convenient dismounting of hinge-coupled installed.
The overall formation of chapelet automatic sampling apparatus of the present invention is shown at Fig. 1.The chapelet automatic sampling apparatus is called for short the coal tub Sampling Machine.It mainly is made up of sampling mechanism, hydraulic push rod 7 and hydraulic power unit 6 thereof, PLC control system.Sampling mechanism mainly is made up of kinematic link 10, sampling arm gear train 4, sampling hopper 3, receiving hopper 1.Hydraulic power unit 6 is made up of hydraulic pump motor, hydraulic pump, fuel tank etc.The hydraulic pump motor of hydraulic power unit 6 is an Electric Machine at Pumping Station.Hydraulic power unit 6 connects and composes hydraulic circuit with rod chamber, the rodless cavity of hydraulic push rod 7 by the road, and the rotating control hydraulic push rod 7 through the control hydraulic pump motor is flexible.
Structure at kinematic link 10 shown in Fig. 1～3.Kinematic link 10 is by connecting rod A (28), connecting rod B (29), connecting rod C formations such as (30).Three connecting rods and bearing 24 constitute four-bar mechanisms.The pin joint and connecting rod B (29) one ends of connecting rod A (28) upper end are hinged; The lower end of connecting rod A (28) is hinged on the hinged seat of ground; The upper end of the other end of connecting rod B (29) and connecting rod C (30) is hinged, and the lower end of connecting rod C (30) is installed on the stationary shaft 25 of bearing 24, connects firmly with sampling arm 13 and together rotates around stationary shaft 25.Hydraulic push rod 7 is hinged with another pin joint of connecting rod A (28) upper end.Under hydraulic push rod 7 drove, connecting rod A (28) rotated on hinged seat, and connecting rod A (28) rotates through connecting rod B (29) drivening rod C (30), and connecting rod C (30) together rotates sampling arm 13 around the stationary shaft 25 of bearing 24.When hydraulic push rod 7 shrank, sampling arm 13 and sampling hopper 3 were forward, to rotate to the direction of coal tub 2 be forward rotation; When hydraulic push rod 7 stretched out, sampling arm 13 and sampling hopper 3 were backward, to rotate to the direction of receiving hopper 1 be backward rotation.
Structure at Fig. 2, the gear train of sampling arm shown in 34.
Sampling arm gear train 4 by sampling arm 13 with and inner driving member constitute.It is constructed as follows:
1. sampling arm 13 is equipped with three axles from bottom to top: the sampling bucket spindle 22 of stationary shaft 25, rotating shaft 26, sampling hopper 3.
A. the two ends of stationary shaft 25 are stretched out sampling arm 13 two sides and are fixed on the bearing 24; Fixed gear A (14), fixed gear B (15) are housed on the stationary shaft 25, connect firmly; The two side of sampling arm 13 through Bearing Installation on the stationary shaft 25 and be contained in connecting rod C (30) one ends on the stationary shaft 25 and connect firmly, together rotate around stationary shaft 25.
B. rotating shaft 26 two ends are contained on the two side of sampling arm 13 through bearing; The gear A (16) that small one and large one gear is formed is housed in the rotating shaft 26.
C. the bucket spindle 22 of sampling is contained in through bearing 11 on the two side of sampling arm 13, and its part in sampling arm 13 is equipped with gear B (18), ratchet 19, gear C (21), energy-storaging spring 12, spring fixed tray 23 successively in the side direction by sampling hopper 3; Gear B (18), gear C (21) and sampling bucket spindle 22 movingly, rotatable, ratchet 19 use key connecting with sampling bucket spindle 22, spring fixed tray 23 is fixed on the bucket spindle 22 of sampling.Ratchet 19 excircles have the ratchet 20 that is engaged with; Ratchet 20 is fixed on a side of gear C (21); One side of energy-storaging spring 12 is fixed on the spring fixed tray 23, and opposite side is fixed on the gear C (21).The projection that the semicircular column is arranged on gear B (18) inner side end, the radius of the radius>=ratchet 19 of projection semicolumn, fluted on the plane of the axis direction of projection semicolumn, groove one side has: when accessing coal sample and the protruding pin T of ratchet 19
XThe sampling spot Q of contact
Y, the groove opposite side has: when pouring out coal sample and the protruding pin T of ratchet 19
XThe D of falling the sampling point of contact
Y
2. the pinion of the fixed gear B (15) on the stationary shaft 25 and gear A (16), the gear wheel of gear A (16) is through gear B (18) transmission on chain A (17) and the sampling bucket spindle 22.Gear C (21) on the sampling bucket spindle 22 is through chain B (27) and fixed gear A (14) transmission.
The PLC control system of coal tub Sampling Machine:
The coal tub Sampling Machine adopts Programmable Logic Controller PLC to realize control automatically.Control mode adopts following several: start automatically, manually boot, manually control.Have fault judgement and emergency stop function simultaneously.
The PLC control system is by PLC switch board 5, outer the forming near switch I (8) with near switch I I (9) and Electric Machine at Pumping Station etc. of switch board.PLC control circuit in the cabinet is to be core with Programmable Logic Controller PLC, and all the other have the relay I (K that button and pilot lamp, control hydraulic push rod 7 contract and stretch that controls on digital module, 24V power supply, the switch board panel
1), relay II (K
2) and Electric Machine at Pumping Station is just changeed (sampling hopper advance) contactor I (1KM), Electric Machine at Pumping Station counter-rotating (the sampling hopper is retreated) contactor II (2KM) waits the circuit of composition.
The rotating control of the flexible Electric Machine at Pumping Station by hydraulic power unit 6 of hydraulic push rod 7.Near switch I (8), near switch I I (9) be located on the spacing position of hydraulic push rod 7 withdrawals when accessing coal sample respectively, hydraulic push rod 7 stretches out on the spacing position when pouring out coal sample.
Panel arrangement at the switch board of PLC shown in Fig. 45.Have on the panel: power light 31 (1HL), Sampling Machine malfunction indicator lamp 32 (2HL), automatic run indicator 33 (3HL), automatic/hand SS 34 (SW
1), manual automatic selector switch 35 (SW of crawl/manually
3), SR 36 (SW
2), manually control start button 37 (SW
4), forwarding button 38 (SW
5), back 39 (SW
6) and scram button 40 (SW
7).
Circuit in the Sampling Machine of coal tub shown in Fig. 5 PLC control system is formed and principle.Programmable controller PLC select for use Siemens (siemens) company LOGO! 12/24R, expand digital module LOGO! DM812/24R.This PLC claims the intelligent logical controller again.PLC control system circuit connects as follows:
The terminals 24L of PLC input side, 24M are two common ports of input side power supply: power positive end 24V+, power supply negative terminal 24V-.Power positive end 24L is connected with PLC wiring of input power source terminal L+ through scram button SW7, and power supply negative terminal 24M is connected with the another terminal M of PLC wiring of input power source end.
Ten input wires terminals of PLC: comprise PLC module The input terminal I of 12/24R
1～I
8, digital module DM812/24R input terminal I
10, I
11Meet input side power supply anode 24L through following signal entering apparatus respectively: 1. automatic/hand SS SW
1Hand switch contact, 2. automatic/hand SS SW
1The automatic switch contact, 3. advance spacing near switch I (SQ
1), 4. SR SW
2, 5. retreat spacing near switch I I (SQ
2), the 6. manual automatic selector switch SW of crawl/manually
3Manual point driving switch contact, the 7. manual automatic selector switch SW of crawl/manually
3Manually boot make and break contact, 8. manually control start button SW
4(37), 9. forwarding button SW
5(38), 10. back SW
6(39).
Ten input wires terminal I of PLC
1～I
8, I
10, I
11, promptly five of the input terminal of PLC, one of input terminal～four, input terminal six～ten.Input terminal I
9, I
12Be empty pin.
PLC outgoing side terminals X
1, X
2Be two common ports of outgoing side power supply: the live wire L of AC 220V power supply, zero line N.AC 380V power supply is the positive contactor I of Electric Machine at Pumping Station (1KM), counter-rotating contactor II (2KM) power supply.(the output terminal Q of digital module DM812/24R
1 '～Q
4 'Do not use).
Four groups of output terminal Q of PLC
1～Q
4Every pair of wire connection terminals in a terminal is arranged, meet outgoing side power supply one end X
1, be the live wire L of AC 220V; Four groups of output terminal Q
1～Q
4Every pair of wire connection terminals in another terminal, meet the other end X of outgoing side power supply respectively through following controlled device
2, be the zero line N of AC 220V: 1. relay I (K
1) magnetic coil, 2. relay II (K
2) magnetic coil, 3. Sampling Machine malfunction indicator lamp 2HL (32), 4. automatic run indicator 3HL (33).
In addition, power light 1HL (31) is connected on outgoing side power supply two ends X
1, X
2Between.Relay I (K
1) normal opened contact K
1-1With the magnetic coil series connection of the positive contactor 1KM of Electric Machine at Pumping Station at the AC380V both ends of power.Relay II (K
2) normal opened contact K
2-1With the magnetic coil series connection of Electric Machine at Pumping Station counter-rotating contactor 2KM at AC 380V both ends of power.
Principle of work:
1. control automatically: manual SS SW
1(34) get to automated location, manually crawl/manual automatic selector switch SW
3(35) get to manual automated location, PLC input end I
2, I
7Receive the high level input signal, PLC output terminal Q
4The output high level, run indicator 3HL is bright automatically; When reaching the predetermined sampling time (the artificial setting in PLC), PLC starts Sampling Machine through predefined program automatically: by PLC output terminal Q
1The output high level, pilot relay I (K
1) adhesive, the normal opened contact K of relay I
1-1Closure, the positive contactor I of Electric Machine at Pumping Station (1KM) adhesive, starting Electric Machine at Pumping Station just changes, and hydraulic power unit 6 feed flows drive hydraulic push rod 7 and shrink.
A. access coal sample: when hydraulic push rod 7 shrinks; Through kinematic link 10 transmissions; Driving sampling arm 13 by connecting rod C (30) together rotates, is forward rotation (turning to shown in the arrow among Fig. 2,3) to the direction of coal tub 2 around the stationary shaft on the bearing 24 25; The pinion wheel of gear A (16) is creeped last rolling of fixed gear B (15), and gear A (16) and sampling arm 13 rotate in the same way, are rotated by chain A (17) driven gear B (18).Q when gear B (18) projection groove
YPoint forwards the protruding pin T with ratchet 19 to
XDuring contact, drive ratchet 19 and rotate in the same way, sampling bucket spindle 22 is upwards overturn by past downwards to the upset of coal tub 2 directions, hopper mouth thereby drive the hopper 3 of sampling with ratchet 19 rotations.Spring fixed tray 23 rotates, makes energy-storaging spring 12 tensionings in the same way with sampling bucket spindle 22.Since ratchet 19 turn to ratchet 20 be forward, so driven gear C (21) rotates.Simultaneously, because fixed gear A (14) does not change, the rotation of sampling arm 13 makes chain B (27) rotate around fixed gear A (14), and driven gear C (21) is to rotate with the direction of ratchet 19 switched in opposite.The other end of energy-storaging spring 12 is fixed on the gear C (21), so gear C (21) is being with energy-storaging spring 12 reverse rotations, is being made it further tensioning.Below sampling hopper 3 moved to chapelet coal tub 2 discharging points, sampling hopper 3 righted, the hopper mouth makes progress, and promptly is in the coal sample state that accesses.At this moment, shrink the spacing position that arrives near switch I (8), give the input end I of PLC near switch I (8) on the occasion of hydraulic push rod 7
3Send signal, PLC output terminal Q
1Be output as zero, relay I (K
1) discharge, positive contactor I (1KM) discharges, and Electric Machine at Pumping Station stops.Sampling hopper 3 accesses coal sample (position shown in Figure 1).After stopping preset time (the artificial setting in PLC), PLC is through predefined program, gets into next step, promptly pours out the coal sample operation.
B. pour out coal sample: after accessing coal sample, press predefined program by PLC output terminal Q
2The output high level, relay II (K
2) adhesive, the normal opened contact K of relay II
2-1Closure, Electric Machine at Pumping Station counter-rotating contactor II (2KM) adhesive starts the Electric Machine at Pumping Station counter-rotating, and hydraulic power unit 6 feed flows drive hydraulic push rod 7 and stretch out.
When hydraulic push rod 7 stretches out; Through kinematic link 10 transmissions; Drive the stationary shaft 25 of sampling arm 13 on bearing 24 by connecting rod C (30) and rotate to the direction of receiving hopper 1, promptly backward rotation makes the pinion wheel of gear A (16) creep at the last backscrolling of fixed gear B (15); Gear A (16) and sampling arm 13 rotate in the same way, are rotated by chain A (17) driven gear B (18).The protruding pin T of ratchet 19
XIn the projection groove of gear B (18), rotate, do not stress.Ratchet 20 blocks ratchet 19, so ratchet 19 can not reverse under energy-storaging spring 12 energy accumulating states.Simultaneously; Do not change because fixed gear A (14) is fixing; The backward rotation of sampling arm 13 makes chain B (27) rotate around fixed gear A (14), and chain B (27) drives gear C (21) backward rotation on the sampling bucket spindle (22), and the ratchet 20 on the gear C (21) drives ratchet 19 and rotates; Ratchet 19 drive sampling bucket spindles 22 rotate, and make the sampling hopper 3 that is fixed on sampling bucket spindle 22 outer ends keep mouth upwards.Arrive receiving hoppers 1 top when sampling arm 13 forwards sampling hopper 3 to, promptly during the position of falling the coal sample, the D of falling the sampling point of gear B (18) projection groove
YForward protruding pin T to ratchet 19
XContact; Simultaneously, ratchet 20 is by the D of falling the sampling point of gear B (18) projection groove
YOutside jack-up is thrown off ratchet 19, and energy-storaging spring 12 is discharged, and spring fixed tray 23 drives sampling bucket spindles 22 and rotates, and ratchet 19 rotates simultaneously, making that sampling bucket 3 overturns, the hopper mouth is downward, pours out coal sample.Ratchet 19 rotates simultaneously; Protruding pin T when ratchet 19
XForward the sampling spot Q of gear B projection groove to
YIn time, blocked, and stops.At this moment, stretch out the spacing position of arrival, give PLC input end I near switch I I (9) near switch I I (9) on the occasion of hydraulic push rod 7
5Signal PLC output terminal Q
2Be output as zero, relay II (K
2) discharge the normal opened contact K of relay II
2-1Break off, counter-rotating contactor II (2KM) discharges, the Electric Machine at Pumping Station stall, and hydraulic power unit 6 stops feed flow, and sampling process is accomplished.Work more than (the artificial setting in PLC) repeats after preset time is rested in this position.
2. manually control: manually boot Sampling Machine and accomplish a sampling process automatically.With manual SS 34 (SW
1) get to manual position, PLC input end I
1Be high level, output terminal Q
4Be output as zero, run indicator 33 (3HL) is gone out automatically; Manual crawl/manual automatic selector switch 35 (SW
3) get to manual automated location, PLC input end I
7Be high level; Press manual control start button 37 (SW
4), PLC input end I
8Be high level, PLC control Sampling Machine stops after accomplishing a sampling process automatically by above-mentioned steps.
3. crawl control: when using manual crawl to control, with manual SS 34 (SW
1) get to manual position, run indicator 33 (3HL) is gone out automatically, manually crawl/manual automatic selector switch 35 (SW
3) get to crawl position, PLC input end I
6Be high level; Pin forwarding button SW
6(38), PLC input end I
10Be high level; Make sampling hopper 3 to the motion of coal tub 2 directions, unclamp forwarding button 38 (SW
5) with stop motion, when hydraulic push rod 7 shrink arrive near switch I (8, SQ
1) the position time, near switch I (8, SQ
1) to PLC input end I
3Signal, be high level, PLC control forwarding button 38 (SW
5) lost efficacy; This moment forwarding button 38 (SW
5) can not control the action of coal tub Sampling Machine, play a protective role.Pin back 39 (SW
6), PLC input end I
11Be high level, make sampling hopper 3, unclamp back 39 (SW to the motion of receiving hopper 1 direction
6) with stop motion, when hydraulic push rod 7 stretch out arrival near switch I I (9, SQ
2) the position time, near switch I I (9, SQ
2) to PLC input end I
5Signal, be high level, PLC control back 39 (SW
6) inefficacy, back 39 (SW at this moment
6) can not control the action of coal tub Sampling Machine, play a protective role.
4. fault judgement reaches and promptly stops: the coal tub Sampling Machine has fault judgement and emergency stop function.When Sampling Machine has fault, for example: sampling bucket is not when initial position, or hydraulic push rod has fault or when near switch fault being arranged and when other problem that jeopardizes device security takes place, PLC output terminal Q
3The output high level, (2HL) is bright for Sampling Machine malfunction indicator lamp 32, and the coal tub Sampling Machine quits work.After fixing a breakdown, press SR 36 (SW
2) reset PLC input end I
4Be high level, output terminal Q
3Be output as zero, Sampling Machine malfunction indicator lamp 32 (2HL) is extinguished, and it is normal that the coal tub Sampling Machine is recovered.
The coal tub Sampling Machine has emergency stop function, presses scram button 40 (SW
7), PLC input side supply terminals L+ outage, various operations all do not have response until scram button 40 (SW
7) reset.
Through the sampling hopper being set, can realize the adjusting of sampling quantity in the time of sampling location and rest position.
The variation of such scheme:
1. detect the flexible limit switch I of hydraulic push rod, retreat limit switch II and also can be arranged on other sample unit, as: on the spacing position of the connecting rod of sampling arm 13, kinematic link 10 etc.
2. it is flexible to control hydraulic push rod, can adopt the solenoid directional control valve in the liquid in-out loop of the rod chamber that is connected in hydraulic push rod, rodless cavity; Be connected in series relay I (K in the control loop of the magnetic coil of the forward and reverse action of solenoid directional control valve respectively
1), relay II (K
2) normal opened contact.
3. this routine hydraulic push rod also can adopt Electrohydraulic push rod, i.e. the form that is integrated of hydraulic push rod, hydraulic pump and group of motors thereof.
4. PLC control system circuit reduction form: only with control automatically, save the automatic/hand SS, manually the automatic selector switch of crawl/manually, manually control start button, forwarding button and back.At PLC input end I
2Connect the automatic switch contact that an automatic starting switch substitutes the automatic/hand SS.
The sampling arm gear train also can adopt the servomotor gear train, and promptly by PLC control servomotor, through gear drive, drive sampling bucket spindle is accomplished the rotation that accesses coal sample and pour out the coal sample process with the sampling hopper with servomotor.This can simplify the sampling arm gear train, but sampling arm need drag cable, and sampling arm rotates and the influence of the abominable installation environment of chapelet discharging chute and cable is vulnerable to.
Claims (6)
1. a chapelet automatic sampling apparatus is characterized in that: comprise sampling mechanism, hydraulic push rod (7), PLC control system;
Sampling mechanism comprises kinematic link (10), sampling arm gear train (4), sampling hopper (3), receiving hopper (1); Hydraulic push rod (7) is through kinematic link (10) and sampling arm gear train (4) driving coupling, promptly the sample sampling bucket spindle (22) of hopper (3) of the output shaft of sampling arm gear train (4);
Sampling arm gear train (4) comprise sampling arm (13) with and interior driving member:
A. sampling arm (13) has three axles from bottom to top: stationary shaft (25), rotating shaft (26), sampling bucket spindle (22);
A., fixed gear A (14) and fixed gear B (15) are housed on the stationary shaft (25), connect firmly; Sampling arm (13) two side is stretched out at stationary shaft (25) two ends, and is fixed on the bearing (24); Sampling arm (13) two side is contained in that stationary shaft (25) is gone up and connects firmly with the connecting rod C (30) of kinematic link (10), can together rotate around stationary shaft (25);
The gear A (16) that small one and large one gear is formed is housed in the b. rotating shaft (26), connects firmly, rotating shaft (26) two ends are contained on sampling arm (13) two side, movingly;
C. the bucket spindle (22) of sampling is contained on sampling arm (13) two side, movingly; The sampling part of bucket spindle (22) sampling arm (13) in is by by being equipped with gear B (18), ratchet (19), gear C (21), energy-storaging spring (12) and spring fixed tray (23) in hopper (3) one side direction of sampling successively; Gear B (18), gear C (21) and sampling bucket spindle (22) movingly, ratchet (19), spring fixed tray (23) connect firmly with sampling bucket spindle (22); Be fixed on gear C (21) one sides with the ratchet (20) of ratchet (19) engagement, energy-storaging spring (12) one sides are fixed on the gear C (21), and opposite side is fixed on the spring fixed tray (23); Gear B (18) inner side end has the semi-cylindrical projection, and the radius of the radius>=ratchet of projection semicolumn (19) is fluted on the plane of projection semicolumn axis direction, and groove one side has: when accessing coal sample and the protruding pin T of ratchet (19)
XThe sampling spot Q of contact
Y, the groove opposite side has: when pouring out coal sample and the protruding pin T of ratchet (19)
XThe D of falling the sampling point of contact
Y
B. the fixed gear B (15) on the stationary shaft (25) connects with the pinion drive of gear A (16), and the gear wheel of gear A (16) is through gear B (18) driving coupling on chain A (17) and the sampling bucket spindle (22); Gear C (21) on the sampling bucket spindle (22) is through chain B (27) and fixed gear A (14) driving coupling;
C. operating state:
When a. accessing coal sample: when hydraulic push rod (7) through kinematic link (10) drive sampling arm (13) around stationary shaft (25) when coal tub (2) direction is rotated forward rotation; The pinion wheel of gear A (16) is gone up to roll at fixed gear B (15) and is creeped; Gear A (16) and sampling arm (13) rotate in the same way, chain A (17) driven gear B (18) rotation; Sampling spot Q when gear B (18) projection groove
YForward protruding pin T to ratchet (19)
XDuring contact, drive ratchet (19) and rotate in the same way, sampling bucket spindle (22) rotates with ratchet (19), and sampling hopper (3) overturns to coal tub (2) direction; Spring fixed tray (23) rotates with sampling bucket spindle (22) in the same way, energy-storaging spring (12) tensioning; Ratchet (19) turns to and ratchet (20) is forward, and driven gear C (21) does not rotate; Simultaneously, fixed gear A (14) does not change, and chain B (27) rotates around fixed gear A (14), and driven gear C (21) is to rotate with ratchet (19) switched in opposite direction; Gear C (21) is being with energy-storaging spring (12) reverse rotation, is being made it further tensioning; When sampling hopper (3) moved to coal tub (2) discharging point below, sampling hopper (3) righted, the hopper mouth makes progress, and promptly accesses the coal sample state;
When b. pouring out coal sample: when hydraulic push rod (7) through kinematic link (10) drive sampling arm (13) around stationary shaft (25) when receiving hopper (1) direction is rotated backward rotation; The pinion wheel of gear A (16) is gone up backscrolling at fixed gear B (15) and is creeped; Gear A (16) and sampling arm (13) rotate in the same way, chain A (17) driven gear B (18) rotation; The protruding pin T of ratchet (19)
XIn the projection groove of gear B (18), rotate, do not stress; Ratchet (20) blocks ratchet (19), and ratchet (19) can not reverse under energy-storaging spring (12) energy accumulating state; Simultaneously; Fixed gear A (14) does not change; Chain B (27) rotates around fixed gear A (14), and chain B (27) drives gear C (21) backward rotation on the sampling bucket spindle (22), and the ratchet (20) on the gear C (21) drives ratchet (19) and rotates; Ratchet (19) drive sampling bucket spindle (22) rotates, and the sampling hopper (3) of sampling bucket spindle (22) outer end keeps mouth upwards; Arrive receiving hopper (1) top when sampling arm (13) forwards sampling hopper (3) to, promptly during the position of falling the coal sample, the D of falling the sampling point of gear B (18) projection groove
YForward protruding pin T to ratchet (19)
XContact; Ratchet (20) is by the D of falling the sampling point of gear B (18) projection groove simultaneously
YOutside jack-up, throw off ratchet (19), energy-storaging spring (12) discharges, and spring fixed tray (23) drives sampling bucket spindle (22) and rotates, and sampling hopper (3) upset, hopper mouth are downward, promptly pour out the coal sample state; Ratchet (19) rotates simultaneously, as the protruding pin T of ratchet (19)
XForward the sampling spot Q of gear B (18) projection groove to
YIn time, blocked, and stops;
The PLC control system comprises PLC switch board (5), access coal sample spacing near switch I, pour out coal sample spacing near switch I I, and flexible hydraulic pump motor or the solenoid directional control valve of control hydraulic push rod (7); PLC control circuit part in the PLC switch board (5) comprises the relay I, the relay II that control button and pilot lamp, the rotating of control hydraulic pump motor or solenoid directional control valve switching-over on Programmable Logic Controller PLC, the switch board panel; The circuit of PLC control system connects as follows:
One of input terminal of PLC～four be I
2～I
5, meet input side power supply one end 24L through following signal entering apparatus respectively: 1. automatic starting switch or automatic/hand SS SW
1The automatic switch contact, 2. near switch I, 3. SR SW
2, 4. near switch I I; Scram button SW
7Be serially connected between the input side power supply one end 24L supply terminals L+ corresponding with the PLC input side;
One of output terminal of PLC～four be Q
1～Q
4A terminal in every pair of wire connection terminals meets outgoing side power supply one end X
1, four output terminal Q
1～Q
4Another terminal meet outgoing side power supply other end X through following controlled device respectively
2: 1. relay I, 2. relay II, 3. Sampling Machine malfunction indicator lamp 2HL, 4. automatic run indicator 3HL; The normal opened contact of relay I, relay II is gone here and there respectively in the positive contactor I of hydraulic pump motor, counter-rotating contactor II control loop, perhaps goes here and there respectively in the control loop of the forward and reverse driving magnetic coil of solenoid directional control valve.
2. chapelet automatic sampling apparatus according to claim 1 is characterized in that: the circuit of said PLC control system also comprises manual control part, five of the input terminal of PLC～ten, that is: I
1, I
6～I
8, I
10, I
11, meet input side power supply one end 24L through following signal entering apparatus respectively: 1. automatic/hand SS SW
1Hand switch contact, the 2. manual automatic selector switch SW of crawl/manually
3Point driving switch contact, the 3. manual automatic selector switch SW of crawl/manually
3The automatic switch contact, 4. manually control start button SW
4, 5. forwarding button SW
5, 6. back SW
6One of said PLC input terminal is I
2, meet automatic/hand SS SW this moment
1The automatic switch contact.
3. chapelet automatic sampling apparatus according to claim 1; It is characterized in that: said near switch I, near switch I I, be located at respectively the spacing position of hydraulic push rod (7) withdrawal near switch I (8), stretch out spacing position near switch I I (9); Said hydraulic pump motor is an Electric Machine at Pumping Station; Electric Machine at Pumping Station, hydraulic pump and fuel tank are formed hydraulic power unit (6); That the control Electric Machine at Pumping Station is just being changeed is the relay I in contactor I and the control loop thereof, and that the control Electric Machine at Pumping Station is reversed is the relay II in contactor II and the control loop thereof.
4. chapelet automatic sampling apparatus according to claim 1 is characterized in that: said hydraulic push rod (7), be combined into one with hydraulic pump, hydraulic pump motor, and constitute Electrohydraulic push rod.
5. chapelet automatic sampling apparatus according to claim 1; It is characterized in that: said kinematic link (10) comprises connecting rod A (28), connecting rod B (29), connecting rod C (30); It is hinged that three connecting rods and bearing (24) constitute the pin joint and connecting rod B (29) one ends of four-bar mechanism: connecting rod A (28) upper end; Connecting rod A (28) lower end is hinged on the hinged seat of ground; Connecting rod B (29) other end and connecting rod C (30) upper end are hinged, and the stationary shaft A (25) that the lower end of connecting rod C (30) is contained in bearing (24) goes up, connects firmly and can rotate around stationary shaft A (25) with sampling arm (13); Hydraulic push rod (7) is hinged with another pin joint of connecting rod A (28) upper end.
6. chapelet automatic sampling apparatus according to claim 1 is characterized in that: the solenoid directional control valve that said control hydraulic push rod is flexible is serially connected in the liquid in-out loop of rod chamber, rodless cavity of hydraulic push rod; Go here and there respectively in the control loop of the magnetic coil of the forward and reverse action of solenoid directional control valve the normal opened contact of relay I, relay II is arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110033618 CN102175480B (en) | 2011-01-23 | 2011-01-23 | Automatic sampling device of bucket-type lifter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110033618 CN102175480B (en) | 2011-01-23 | 2011-01-23 | Automatic sampling device of bucket-type lifter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102175480A CN102175480A (en) | 2011-09-07 |
| CN102175480B true CN102175480B (en) | 2012-12-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110033618 Active CN102175480B (en) | 2011-01-23 | 2011-01-23 | Automatic sampling device of bucket-type lifter |
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| Country | Link |
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| CN (1) | CN102175480B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104477577A (en) * | 2014-12-15 | 2015-04-01 | 重庆广恒食品开发有限公司 | Intermittent conveyer belt control device |
| CN107740852A (en) * | 2017-11-27 | 2018-02-27 | 无锡富岛科技股份有限公司 | A kind of multi-shaft interlocked rotating device |
| CN113419482A (en) * | 2021-07-01 | 2021-09-21 | 广州达意隆包装机械股份有限公司 | Control system capable of multi-azimuth inching operation |
| CN116659926B (en) * | 2023-07-25 | 2023-10-13 | 天津汇众轻量化科技有限公司 | Blanking sampling device and sampling method for stamping |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FI80523C (en) * | 1988-06-10 | 1990-06-11 | Limnos Oy | A sampler. |
| CN201034864Y (en) * | 2007-04-17 | 2008-03-12 | 昆明钢铁股份有限公司 | Boost type automatic sampler |
| CN201075064Y (en) * | 2007-09-26 | 2008-06-18 | 兖州煤业股份有限公司 | Machine for automatically sampling broad coal flow |
| CN201122135Y (en) * | 2007-12-17 | 2008-09-24 | 霍春生 | Bucket type sampler with block |
| CN202013284U (en) * | 2011-01-23 | 2011-10-19 | 兖州煤业股份有限公司 | Automatic sampling device for bucket elevator |
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|---|---|
| CN102175480A (en) | 2011-09-07 |
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Inventor after: Wang Xin Inventor after: Zhang Qizhi Inventor after: Yan Qinyun Inventor after: Fu Fucun Inventor after: Jiang Nianwu Inventor after: Chen Yanqing Inventor after: Zhang Gang Inventor before: Zhang Qizhi Inventor before: Yan Qinyun Inventor before: Fu Fucun Inventor before: Jiang Nianwu Inventor before: Chen Yanqing Inventor before: Zhang Gang |
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Free format text: CORRECT: INVENTOR; FROM: ZHANG QIZHI YAN QINYUN FU FUCUN JIANG NIANWU CHEN YANQING ZHANG GANG TO: WANG XIN ZHANG QIZHI YAN QINYUN FU FUCUN JIANG NIANWU CHEN YANQING ZHANG GANG |