CN103216098A

CN103216098A - Small concrete conveying pump truck

Info

Publication number: CN103216098A
Application number: CN 201210025861
Authority: CN
Inventors: 周德祥
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-01-20
Filing date: 2012-01-20
Publication date: 2013-07-24

Abstract

The invention discloses a small concrete conveying pump truck. The small concrete conveying pump truck is very small in size, can be used on each floor and walks room by room. An ash bucket car lifts concrete stirred by a ground stirrer to the floor where the small pump truck is located through a portal frame crane and pours the concrete into a lifting hopper of the pump truck, and the pump truck automatically casts the concrete of ring beams and posts in near distance. The small concrete conveying pump truck is simple in operation and convenient to use, and is particularly applied to a building with a smaller construction space. The labor intensity is low, the mechanical level of the building is improved, the efficiency is improved, and the construction cost is reduced.

Description

Small-size concrete is carried pump truck

Technical field the present invention relates to the equipment of the transmission and concrete transmission that building construction uses, and a kind of small-size concrete is carried pump truck.

Background technology available coagulation soil is carried pump truck, structurally, they have all adopted the twin-tub structure, just there are two hydraulic jacks to drive two concrete cylinders, a hydraulic jack and a concrete cylinder are formed one group of pumping system, and two groups of pumping systems are arranged side by side, and make the structure width of concrete pump bigger, be not suitable for less space, space and use, and cost is higher.

At present, in the domestic architecture of rural area and small city, when the concrete construction of concrete collar tie beam and pillar, still use the pony mixer ready-mixed concrete, manually build a framework, manually upwards put down concrete with spade, labour intensity is big, and efficient is low again.Because big pump truck is the price height not only, and volume is big, yet the space between the house owed by a citizen is less, needs amount of concrete less, the commodity in use concrete has increased common people's the cost that builds a house again,

Summary of the invention is in order to overcome the existing concrete delivery pump bassinet structure width concrete shortcoming of commodity in use more again, the present invention has designed a kind of small-size concrete and has carried pump truck, on the basis of one group of single cylinder concrete pumping system, install one and stirred feeding system and reverse fold arm system, its volume is very little, can be placed on each floor, walking of ground, a room, a room and construction, closely build the concrete of collar tie beam and pillar, the concrete that the ground mixer of ash bucket handlebar stirs is transported to upstairs by the portal frame elevator, concrete in the grey trolley is directly poured in the stirring lift hopper, stir lift hopper rising back concrete and pour in the stationary hopper automatic pumping concrete automatically into.Owing to be the short distance concreting, its delivery head has only the first floor height, and horizontal transport distance is also very short, and delivery pump pipe is also very short.

Described small-size concrete carries pump truck to be made up of a walking chassis, one group of single cylinder concrete pumping system, a reverse fold arm system and a stirring feeding system, and pumping system, reverse fold arm system and stirring lift hopper system all are installed on the walking chassis.

Described small-size concrete carry pump truck the single cylinder concrete pumping system it by hydraulic power unit, electrical control system, a big hydraulic jack, a concrete cylinder, a triplet commutation rotary valve, a stationary hopper, an oscillating oil cylinder, a big hydraulic jack range controlling mechanism and an oscillating oil cylinder range controlling mechanism are formed, big hydraulic jack and concrete cylinder all are that level is installed on the walking chassis, the piston rod of big hydraulic jack is connected with flange with the piston of concrete cylinder, between big hydraulic jack and concrete cylinder, a rectangular lubrication oil fuel tank is arranged, the flange of big hydraulic jack and concrete cylinder is connected with two parallel surfaces of lubrication oil fuel tank respectively, two parallel surfaces of this of lubrication oil fuel tank have respectively been processed a coaxial circular hole, circular hole cooperates with the seam of the flange of big hydraulic jack and concrete cylinder, realize the axiality of big hydraulic jack and concrete cylinder, big hydraulic jack range controlling mechanism has been installed on the lubrication oil fuel tank, range controlling mechanism is by two fixing sliding sleeves, a stroke guide rod, two travel switches, a fixed block and a striking plate are formed, the stroke guide rod fixedly slides in the sliding sleeve at two, the stroke guide rod is parallel with the axis of large tank and concrete cylinder, fixedly on the stroke guide rod between the sliding sleeve striking plate has been installed at two, striking plate is made up of pipe and open plate, the upper end that pipe is installed in open plate is connected as a single entity, pipe is enclosed within on the stroke guide rod, a holding screw is arranged on pipe, making pipe can not follow the journey guide rod slides, there is a U type groove lower end of open plate, be clipped in the both sides of the piston rod of large tank, striking plate is positioned at the adpting flange left side of large tank piston rod and concrete cylinder piston, a tightrope has been installed between adpting flange and open plate, the length of tightrope equals the range of big hydraulic jack, fixed block is installed in an end of stroke guide rod, and between two travel switches, the circuit of two travel switches is connected with the 3-position 4-way solenoid operated directional valve of control oscillating oil cylinder oil circuit respectively, a holding screw has been installed on the fixed block, making fixed block can not follow the journey guide rod slides, fixed block is the pipe that there is tapering at two ends, the triplet commutation rotary valve is positioned at the feed inlet end of concrete cylinder, with bolt triplet commutation rotary valve and concrete cylinder are linked together, stationary hopper is positioned at the top of triplet commutation rotary valve, connect with bolt between stationary hopper and the triplet commutation rotary valve, the triplet commutation rotary valve is by bent axle, two end caps, the rotary valve shell is formed, two end caps are connected with bolt with the rotary valve shell, in the outside of two end cap central bore bearing have been installed all, and bent axle is by two fanning strips, two ends central rotating shaft and an arc are formed, it is coaxial that the two ends central rotating shaft is positioned at both sides and two sections central rotating shafts of two fanning strips, wherein processed spline on the central rotating shaft of long end, the two ends central rotating shaft lays respectively in the centre bore of two flange end caps, the little matched in clearance of inwall of arc and rotary valve shell, bent axle can rotate around central rotating shaft, arc is alternate rotation between triplet commutation rotary valve discharging opening and charging aperture, has designed a charging aperture on the rotary valve shell, a discharging opening and a concrete cylinder connector, charging aperture is on the top of triplet commutation rotary valve, stationary hopper is above the triplet commutation rotary valve, the concrete cylinder connector of triplet commutation rotary valve is connected with concrete cylinder, and the discharging opening of triplet commutation rotary valve is connected with carrier pipe, on the long end central rotating shaft of the bent axle of triplet commutation rotary valve a swing arm has been installed, spline connects between swing arm and the central rotating shaft, the front end of oscillating oil cylinder piston rod and the rotating shaft of swing arm are hinged, and a range controlling mechanism has been installed on oscillating oil cylinder, and range controlling mechanism is by the stroke guide rod, a fixed block, one fixedly sliding sleeve and two travel switches are formed, fixedly sliding sleeve and two travel switches all are installed on the oscillating oil cylinder, swing with oscillating oil cylinder, the front end circular hole of stroke guide rod and oscillating oil cylinder piston rod together are sleeved in the rotating shaft of swing arm, and the other end that the stroke guide rod passes behind the fixing sliding sleeve has been installed fixed block, fixed block is between two travel switches, the circuit of two travel switches is connected with the 3-position 4-way solenoid operated directional valve of big hydraulic jack control oil channel, and one two position and four-way reversing valve has been installed on the oil circuit of oscillating oil cylinder, implements the anti-pump operation of commutation.

Described small-size concrete carries the stirring feeding system of pump truck to be installed on the walking chassis, and be positioned near the stationary hopper, it is by two guide rails, elevating mechanism, the lift ram oil cylinder, two chains, two swing arms, two gear wheels and a lift hopper are formed, two guide rails are channel-section steel structures, be connected as a single entity by bottom junction plate and top junction plate, elevating mechanism is by four directive wheels, bottom junction plate and two risers are formed, the bottom junction plate is connected as a single entity two risers, the lateral surface of each riser is respectively installed two directive wheels, directive wheel is in guide rail (channel-section steel) slides within, fit in the inboard of two risers and two guide rails, two swing arms lay respectively at the inboard of two risers, be connected as a single entity with rotating shaft and connecting rod between two swing arms, pack into after by two swing arms in the circular hole of two risers in the two ends of rotating shaft, by rotating shaft, swing arm is with elevating mechanism one lifting, swing arm can rotate around the axis, the lift ram oil cylinder is between two guide rails, be installed on the junction plate of guide rail bottom, a crossbeam has been installed in the upper end of plunger rod, a runner has respectively been installed at the two ends of crossbeam, one end of two chains is connected on the junction plate of guide rail bottom, by being connected respectively to behind two runners on the junction plate of elevating mechanism bottom, two gear wheels are installed in two guide rail tops respectively and are positioned at appropriate location, swing arm top, lift hopper is installed on two swing arms, under the promotion of lift ram oil cylinder, elevating mechanism drives swing arm and hopper begins to raise, after swing arm is run into gear wheel, swing arm and lift hopper begin to rotate around the axis, realize the batch turning operation, an end face of lift hopper has been installed hydraulic motor, a shaft has been installed on hydraulic motor output shaft, several stirrer gears have been installed on the shaft, the position of stirring hopper is lower, kiss the earth.

Described small-size concrete carries the reverse fold arm system of pump truck by multistage plunger cylinder, sleeve, bearing, first segment folds arm, first segment folds the arm swing oil cylinder, folding arm of second joint and the folding arm swing oil cylinder of second joint are formed, multistage plunger cylinder is installed on the walking chassis, the top of the thinnest plunger of multistage plunger cylinder is equipped with a central rotating shaft, several bearings are housed on the central rotating shaft, external diameter at bearing is equipped with sleeve, sleeve can rotate around central rotating shaft, the folding arm of the top of sleeve and first segment is hinged, between the folding arm of sleeve and first segment oscillating oil cylinder has been installed also, under the effect of oscillating oil cylinder, the folding arm of first segment can be swung around hinge, hinged between folding arm of first segment and the folding arm of second joint, the folding arm of second joint is an elephant trunk, on the folding arm of second joint, a conveying rubber pipe joint has been installed, conveying rubber pipe is communicated with the discharging opening of the triplet commutation rotary valve of concrete pumping system, between folding arm of first segment and the folding arm of second joint, oscillating oil cylinder has been installed also, oscillating oil cylinder drives the folding arm of second joint and swings around hinge by quadrilateral connecting rod.

This small-size concrete carries pump truck to have following major advantage:

1, this pump truck is simple in structure, and appearance and size is very little, is fit to the construction in less space, and cost is low.

2, realize working continuously of stirring, material loading, pumping, improved the equipment operating efficiency:

3, reduced working strength of workers

Description of drawings is below in conjunction with the description of drawings specific embodiment of the invention:

Fig. 1 is the structural representation that small-size concrete is carried pump truck

Fig. 2 is that small-size concrete carries the reverse fold arm of pump truck to launch and the structural representation of the duty during the feed mechanism batch turning

Structural representation when Fig. 3 is the outside delivering concrete state of the concrete cylinder of the small-size concrete single cylinder pumping system of carrying pump truck

Structural representation when Fig. 4 is the inside inspiration concrete of the concrete cylinder state of the small-size concrete single cylinder pumping system of carrying pump truck

Fig. 5 is the front schematic view that small-size concrete is carried the stirring feeding system of pump truck

Fig. 6 is the side cross-sectional view that small-size concrete is carried the stirring feeding system of pump truck

Fig. 7 be small-size concrete carry pump truck the batch turning of stirring feeding system the time the side cross-sectional view

Fig. 8 is the striking plate structural representation that small-size concrete is carried pump truck

Fig. 9 is the cross-sectional view that small-size concrete is carried the triplet commutation rotary valve shell of pump truck

Figure 10 is the vertical section structure schematic diagram that small-size concrete is carried the triplet commutation rotary valve bent axle of pump truck

Figure 11 is that the cross section structure schematic diagram with the rotary valve bent axle is changed in the threeway of small-size concrete conveying pump truck

Figure 12 is the hydraulic principle schematic diagram that small-size concrete is carried pump truck

As shown in FIG.: the 1-chassis of walking, 2-reverse fold arm system, the 3-hinge, the 4-quadrilateral connecting rod, 5-conveying rubber pipe joint, the folding arm of 6-second joint, the 7-first segment folds the arm swing oil cylinder, the 8-bearing, the 9-sleeve, the 10-plunger cylinder, the folding arm swing oil cylinder of 11-second joint, the 12-first segment folds arm, the 13-hinge, 14-stirs feeding system, 15-conveying rubber pipe, the shell of 16-triplet commutation rotary valve, the bent axle of 17-triplet commutation rotary valve, 18-triplet commutation rotary valve, 19-concrete pumping system, 20-concrete cylinder, big concrete cylinder piston rod of 21-and concrete cylinder piston adpting flange, 22-lubrication oil fuel tank, 23-tightrope, the big hydraulic jack of 24-, the big hydraulic cylinder piston of 25-, the big oil pocket hydraulic fluid port of the big hydraulic jack of 26-, the big hydraulic jack small oil cavity of 27-hydraulic fluid port, the big hydraulic cylinder piston rod of 28-, the 29-road wheel, 30-is sliding sleeve fixedly, 31-striking plate, 32-stroke guide rod, the 33-travel switch, the 34-fixed block, 35-travel switch, 36-end cap, the 37-swing arm, the 38-hinge, 39-stroke guide rod, 40-is sliding sleeve fixedly, the 41-travel switch, the 42-fixed block, 43-oscillating oil cylinder, 44-travel switch, 45-concrete cylinder piston, the 46-gear wheel, 47-swing arm, 48-guide rail, the 49-elevating mechanism, the 50-directive wheel, 51-chain, 52-lift ram oil cylinder, 53-guide rail bottom junction plate, 54-elevating mechanism bottom junction plate, the rotating shaft of 55-swing arm, 56-runner, the 57-crossbeam, 58-swing arm connecting rod, 59-guide rail top junction plate, 60-lift hopper, the 61-shaft, the 62-stirrer gear, 63-pipe, 64-open plate, 65-concrete cylinder mouth connector, the 66-charging aperture, 67-discharging opening, 68-central rotating shaft, the 69-fanning strip, the 70-arc, the big hydraulic jack three position four-way directional control valve of 71-, the three position four-way directional control valve of 72-oscillating oil cylinder, the anti-pump two-position four way change valve of 73-, the three position four-way directional control valve of 74-hydraulic motor, 75-hydraulic motor, the 3-position-3-way reversal valve of 76-plunger cylinder, the 3-position-3-way reversal valve of the folding arm lifting plunger cylinder of 77-, the three position four-way directional control valve of the folding arm swing oil cylinder of 78-first segment, the three position four-way directional control valve of the folding arm swing oil cylinder of 79-second joint, 80-riser, the 81-stationary hopper, the 82-central rotating shaft

The specific embodiment:

In Fig. 1 and Fig. 2, carry small-size concrete pump truck manually to move the room that will construct to, start the motor of concrete pumping system 19, stirring feeding system 14 and reverse fold arm system 2, each oil pump begins to rotate.

3-position-3-way reversal valve 77 commutations of operation plunger cylinder 10, make folding arm 6 and 12 be raised to the extreme higher position, three position four-way directional control valve 78 commutations of the oscillating oil cylinder 7 of the folding arm 12 of operation first segment, oil pump is to the big oil pocket fuel feeding of the oscillating oil cylinder 7 of the folding arm of first segment, make first segment fold 12 one-tenth vertical states of arm, three position four-way directional control valve 79 commutations of the oscillating oil cylinder 11 of the folding arm of operation second joint, oil pump is to the big oil pocket fuel feeding of the oscillating oil cylinder 79 of the folding arm of second joint, the discharging opening that makes the folding arm of second joint is facing to the place of wanting concreting, manually can rotate the folding arm 6 of second joint, it can be rotated around central rotating shaft 82, change the place of concreting, joint 5 on the folding arm 6 of second joint is connected with the discharging opening 67 of the triplet commutation rotary valve 18 of concrete pumping system 19 by conveying rubber pipe 15, and this state is exactly the normal duty of reverse fold arm system.

The concrete material that the mixer of unit in charge of construction stirs is poured in the lift hopper 60 that stirs feeding system 14,74 commutations of operation three position four-way directional control valve, make and stir hydraulic motor 75 drive shafts 61 and stirrer gear 62 rotations, operation 3-position-3-way reversal valve 76, to plunger cylinder 52 fuel feeding, plunger cylinder 52 elongations, promote elevating mechanism 49 and swing arm 47 and lift hopper 60 risings, when swing arm 47 contact gear wheels 46, swing arm 47 drives lift hopper 60 beginnings and 55 rotates around the shaft, when the stroke of plunger cylinder 52 is maximum, just the concrete in the lift hopper 60 is poured into (Fig. 2) in the stationary hopper 81, operate 76 commutations of 3-position-3-way reversal valve then, under the effect of hopper 60 and elevating mechanism 49 gravity, the plunger retraction of plunger cylinder 52, drop to extreme lower position up to lift hopper 60, add concrete to lift hopper 60 again ... so constantly repeat, the concrete in the hopper 60 constantly rises and pours in the stationary hopper 81.

Simultaneously, operation three position four-way directional control valve 71 and 72, oscillating oil cylinder 43 shrinks piston rod, the arc 70 of bent axle 17 is blocked the discharging opening 67 of triplet commutation rotary valve 18, the piston 45 of concrete cylinder 20 bounces back fast, the concrete in the stationary hopper 81 in the charging aperture 66 inspiration concrete cylinders 20 of triplet commutation rotary valve 18, when the adpting flange 21 of concrete cylinder 20 is run into striking plate 31, striking plate 31 drives stroke guide rod 32 and is moved to the left, fixed block 34 on the stroke guide rod 32 is run into the travel switch 33 in left side, the signal of telecommunication of travel switch 33 is passed to the 3-position 4-way solenoid operated directional valve 72 of oscillating oil cylinder 43,3-position 4-way solenoid operated directional valve 72 is realized commutation, make the big oil pocket fuel feeding of oil pump to oscillating oil cylinder 43, the piston rod elongation of oscillating oil cylinder 43, promoting bent axle 17 by swing arm 37 rotates, arc 70 is opened the discharging opening 67 of triplet commutation rotary valve 18, charging aperture 66 sealings, the stroke of the piston rod of oscillating oil cylinder 43 drive simultaneously guide rod 39 moves right, fixed block 42 on the stroke guide rod 39 is run into travel switch 41, the signal of telecommunication of travel switch 41 is passed to the three position four-way directional control valve 71 of large tank 24, three position four-way directional control valve 71 is realized commutation, oil pump is to the big oil pocket fuel feeding of large tank 24, piston rod 28 begins to stretch out, the piston 45 that promotes concrete cylinder 20 moves right, constantly the concrete in the concrete cylinder 20 is released through the discharging opening 67 of triplet commutation rotary valve 18, when concrete cylinder piston 45 moves to maximum position, tightrope 23 is earned tightly, and drive striking plate 31 and stroke guide rod 32 moves right, when the fixed block on the stroke guide rod 32 34 is run into travel switch 35, the signal of telecommunication of travel switch 35 passes to the three position four-way directional control valve 72 of oscillating oil cylinder 43, three position four-way directional control valve 72 is realized commutation, oil pump is to the small oil cavity fuel feeding of oscillating oil cylinder 43, the piston rod of oscillating oil cylinder 43 shrinks, the bent axle 17 that drives triplet commutation rotary valve 18 by swing arm 37 rotates, open charging aperture 66, arc 70 sealing discharging openings 67, simultaneously, the piston rod of oscillating oil cylinder 43 shrinks, driving stroke guide rod 39 by swing arm 37 is moved to the left, when the fixed block on the stroke guide rod 39 42 is run into travel switch 44, the signal of telecommunication of travel switch 44 passes to the three position four-way directional control valve 71 of large tank 24, three position four-way directional control valve 71 is realized commutation, oil pump is to the small oil cavity fuel feeding of large tank 24, piston rod 28 drives concrete cylinder pistons 45 fast moving left together, when adpting flange 21 is run into striking plate 31, striking plate 31 drives stroke guide rod 32 and fixed block 34 is moved to the left together, fixed block 34 is run into travel switch 33, the signal of telecommunication of travel switch 33 passes to the 3-position 4-way solenoid operated directional valve 72 of oscillating oil cylinder 43, so circulation, inspiration concrete and pump concrete constantly

When elephant trunk stops up or has other to need, can adjust two-position four way change valve 73 to the another location, oscillating oil cylinder 43 is with above-mentioned to introduce the course of work just in time opposite, pumping system 19 will be constantly the concrete inspiration concrete cylinder 20 in the conveying rubber pipe 15, then, the piston 45 of concrete cylinder 20 just is pushed to concrete in the stationary hopper 81 again.

After the concrete construction in a room is finished, folding arm is reclaimed and the whereabouts, carry small-size concrete pump truck to move next construction room to then, repeat aforesaid operations.

Claims

1. a small-size concrete is carried pump truck, it is made up of walking chassis (1), concrete pumping system (19) and reverse fold arm system (2), it is characterized in that: concrete pumping system (19) is a single cylinder pumping system, and has installed one and stirred feeding system (14).

2. small-size concrete according to claim 1 is carried pump truck, it is characterized in that: single cylinder concrete pumping system (19) is by hydraulic power unit, electrical control system, a big hydraulic jack (24), a concrete cylinder (20), a triplet commutation rotary valve (18), a stationary hopper (81), an oscillating oil cylinder (43), big hydraulic jack (24) range controlling mechanism and an oscillating oil cylinder (43) range controlling mechanism are formed, big hydraulic jack (24) and concrete cylinder (20) all are that level is installed on the walking chassis (1), the piston rod (28) of big hydraulic jack (24) is connected with flange (21) with the piston (45) of concrete cylinder (20), between big hydraulic jack (24) and concrete cylinder (20), a rectangular lubrication oil fuel tank (22) is arranged, the flange of big hydraulic jack (24) and concrete cylinder (20) is connected with two parallel surfaces of lubrication oil fuel tank (22) respectively, two parallel surfaces of this of lubrication oil fuel tank (22) have respectively been processed a coaxial circular hole, circular hole cooperates with the seam of the flange of big hydraulic jack (24) and concrete cylinder (20), big hydraulic jack (24) range controlling mechanism has been installed on lubrication oil fuel tank (22), range controlling mechanism is by two fixing sliding sleeves (30), a stroke guide rod (32), two travel switches (33) and (35), a fixed block (34) and a striking plate (31) are formed, stroke guide rod (32) fixedly slides in the sliding sleeve (30) at two, stroke guide rod (32) is parallel with the axis of concrete cylinder (20) with large tank (24), fixedly on the stroke guide rod (32) between the sliding sleeve (30) striking plate (31) has been installed at two, striking plate (31) is made up of pipe (63) and open plate (64), pipe (63) is installed in the upper end of open plate (64) and is connected as a single entity, pipe (63) is enclosed within on the stroke guide rod (32), a holding screw is arranged on pipe (63), there is a U type groove lower end of open plate (64), be clipped in the both sides of the piston rod (28) of large tank (24), striking plate (31) is positioned at adpting flange (21) left side of large tank piston rod (28) and concrete cylinder piston (45), between adpting flange (21) and open plate (64), a tightrope (23) has been installed, the length of tightrope (23) equals the range of big hydraulic jack (24), fixed block (34) is installed in an end of stroke guide rod (32), and be positioned between two travel switches (33) and (35), the circuit of two travel switches (33) and (35) is connected with the 3-position 4-way solenoid operated directional valve (72) of control oscillating oil cylinder (43) oil circuit respectively, a holding screw has been installed on the fixed block (34), fixed block (34) is the pipe that there is tapering at two ends, triplet commutation rotary valve (18) is positioned at the feed inlet end of concrete cylinder, with bolt triplet commutation rotary valve (18) and concrete cylinder (20) are linked together, stationary hopper (81) is positioned at the top of triplet commutation rotary valve (18), connect with bolt between stationary hopper (81) and the triplet commutation rotary valve (18), triplet commutation rotary valve (18) is by bent axle (17), two end caps (36), rotary valve shell (16) is formed, two end caps (36) are connected with bolt with rotary valve shell (16), bearing has all been installed in the outside at two end caps (36) centre bore, bent axle (17) is by two fanning strips (69), a two ends central rotating shaft (68) and an arc (69) are formed, it is coaxial that two ends central rotating shaft (68) is positioned at both sides and two sections central rotating shafts (68) of two fanning strips (69), wherein processed spline on the central rotating shaft (68) of long end, two ends central rotating shaft (68) lays respectively in the centre bore of two flange end caps (36), the little matched in clearance of inwall of arc (70) and rotary valve shell (16), bent axle (17) can rotate around central rotating shaft (68), arc (70) is alternate rotation between the discharging opening (67) of triplet commutation rotary valve (18) and charging aperture (66), designed a charging aperture (66) on the rotary valve shell (17), a discharging opening (67) and a concrete cylinder connector (65), charging aperture (66) is on the top of triplet commutation rotary valve (18), stationary hopper (81) is in the top of triplet commutation rotary valve (18), the concrete cylinder connector (65) of triplet commutation rotary valve (18) is connected with concrete cylinder (20), the discharging opening (67) of triplet commutation rotary valve (18) is connected with carrier pipe (15), on the long end central rotating shaft (68) of the bent axle (17) of triplet commutation rotary valve (18) swing arm (37) has been installed, spline connects between swing arm (37) and the central rotating shaft (68), the front end of oscillating oil cylinder (43) piston rod and the hinge (38) of swing arm (37) are hinged, a range controlling mechanism has been installed on oscillating oil cylinder (43), range controlling mechanism is by stroke guide rod (39), a fixed block (42), one fixedly sliding sleeve (40) and two travel switches (41) and (44) are formed, fixedly sliding sleeve (40) and two travel switches (41) and (44) all are installed on the oscillating oil cylinder (43), swing with oscillating oil cylinder (43), the front end circular hole of stroke guide rod (39) and oscillating oil cylinder (43) piston rod together are sleeved on the hinge (38) of swing arm (37), the other end that stroke guide rod (39) passes behind the fixing sliding sleeve (40) has been installed fixed block (42), fixed block (42) is positioned between two travel switches (41) and (44), the circuit of two travel switches (41) and (44) is connected with the 3-position 4-way solenoid operated directional valve (71) of big hydraulic jack (24) control oil channel, and a two-position four way change valve (73) has been installed on the oil circuit of oscillating oil cylinder (43).

3. small-size concrete according to claim 1 is carried pump truck, it is characterized in that: stir feeding system (14) and be installed on the walking chassis (1), and be positioned near the stationary hopper (81), it is by two guide rails (48), elevating mechanism (49), lift ram oil cylinder (52), two chains (51), two swing arms (47), two gear wheels (46) and a lift hopper (60) are formed, two guide rails (48) are the channel-section steel structures, be connected as a single entity by bottom junction plate (53) and top junction plate (59), elevating mechanism (49) is by four directive wheels (50), bottom junction plate (54) and two risers (80) are formed, bottom junction plate (54) is connected as a single entity two risers (80), the lateral surface of each riser (80) is installed two directive wheels (50), directive wheel (50) is in guide rail (48) slides within, two risers (80) are fitted with the inboard of two guide rails (48), two swing arms (47) lay respectively at the inboard of two risers (80), be connected as a single entity with rotating shaft (55) and connecting rod (58) between two swing arms (47), pack into after by two swing arms (47) in the circular hole of two risers (80) in the two ends of rotating shaft (55), by rotating shaft (55), swing arm (47) is with elevating mechanism (49) one liftings, swing arm (47) (55) around the shaft rotates, lift ram oil cylinder (52) is positioned between two guide rails (48), and be installed on the guide rail bottom junction plate (53), a crossbeam (57) has been installed in the upper end of plunger rod, a runner (56) has respectively been installed at the two ends of crossbeam (57), one end of two chains (51) is connected on the guide rail bottom junction plate (53), by being connected respectively to behind two runners (56) on the elevating mechanism bottom junction plate (54), two gear wheels (46) are installed in two guide rail (48) tops respectively and are positioned at the appropriate location, top of swing arm (47), lift hopper (60) is installed on two swing arms (47), an end face of lift hopper (60) has been installed hydraulic motor (75), a shaft (61) has been installed on the output shaft of hydraulic motor (75), several stirrer gears (62) have been installed on the shaft (61), the position of stirring hopper (60) is lower, kiss the earth.

4. small-size concrete according to claim 1 is carried pump truck, it is characterized in that: reverse fold arm system (2) is by multistage plunger cylinder (10), sleeve (9), bearing (8), first segment folds arm (12), first segment folds arm swing oil cylinder (7), folding arm (6) of second joint and the folding arm swing oil cylinder (11) of second joint are formed, multistage plunger cylinder (10) is installed on the walking chassis (1), the top of the thinnest plunger of multistage plunger cylinder (10) is equipped with a central rotating shaft (82), several bearings (8) are housed on the central rotating shaft (82), external diameter at bearing (8) is equipped with sleeve (9), sleeve (9) can rotate around central rotating shaft (82), the folding arm (12) of the top of sleeve (9) and first segment is hinged, between the folding arm (12) of sleeve (9) and first segment oscillating oil cylinder (7) has been installed also, first segment folds between arm (12) and the folding arm (6) of second joint hinged, the folding arm (6) of second joint is an elephant trunk, on the folding arm (6) of second joint, a conveying rubber pipe joint (5) has been installed, conveying rubber pipe (15) one ends are connected with conveying rubber pipe joint (5), the other end is communicated with the discharging opening (67) of the triplet commutation rotary valve (18) of concrete pumping system (19), between folding arm (12) of first segment and the folding arm (6) of second joint oscillating oil cylinder (11) has been installed also, oscillating oil cylinder (11) is hinged with the folding arm (6) of second joint by quadrilateral connecting rod (4).