CN202672741U

CN202672741U - Small-scale concrete pump truck

Info

Publication number: CN202672741U
Application number: CN 201220042352
Authority: CN
Inventors: 周德祥
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-01-20
Filing date: 2012-01-20
Publication date: 2013-01-16
Anticipated expiration: 2022-01-20

Abstract

A small-scale concrete pump truck is small in size. The small-scale concrete pump truck can be placed and used in a floor, and move from one room to another room. An ash hopper truck is used to lift concrete which is mixed by a ground mixer to the floor in which the small-scale concrete pump truck is located through a gantry crane and pours into a lifting material hopper of the small-scale concrete pump truck, the small-scale concrete pump truck automatically pours concrete into a ring beam and a column in a close range. The small-scale concrete pump truck is simple in structure, convenient to use, especially suitable for a building with a small construction spac, low in hand labor intensity, and capable of improving mechanical level of a building, improving efficiency and reducing construction cost.

Description

The small-sized concrete conveying pump car

Technical field the utility model relates to the equipment of the concrete conveyance that building construction uses, a kind of small-sized concrete conveying pump car.

The existing concrete pump truck of background technology, structurally, they have all adopted double-cylinder structure, namely there are two hydraulic jacks to drive two concrete cylinders, a hydraulic jack and a concrete cylinder form one group of pumping system, and two groups of pumping systems are arranged side by side, and make the structure width of concrete pump larger, 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 large, and efficient is low again.Because large pump truck not only price is high, and volume is large, yet the space between the house owed by a citizen is less, needs amount of concrete less, the commodity in use concrete has increased again common people's the cost that builds a house,

Summary of the invention is in order to overcome the more again concrete shortcoming of commodity in use of existing concrete pump truck structure width, the utility model has designed a kind of small-sized concrete conveying pump car, install one on the basis of one group of single cylinder concrete pumping system and stirred feeding system and reverse fold arm system, its volume is very little, can be placed on each floor, the 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, concrete is poured in the stationary hopper automatic concrete pumping automatically into after stirring the lift hopper rising.Owing to be the short distance concreting, its delivery head only has first floor high, and horizontal transport distance is also very short, and delivery pump pipe is also very short.

Described small-sized concrete conveying pump car is comprised 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.

The single cylinder concrete pumping system of described small-sized concrete conveying pump car it by hydraulic power unit, electrical control system, a large hydraulic jack, a concrete cylinder, a triplet commutation rotary valve, a stationary hopper, an oscillating oil cylinder, a large hydraulic jack range controlling mechanism and an oscillating oil cylinder range controlling mechanism form, large hydraulic jack and concrete cylinder all are that level is installed on the walking chassis, the piston rod of large hydraulic jack is connected with flange with the piston of concrete cylinder, between large hydraulic jack and concrete cylinder, a rectangular Lubricating oil tank is arranged, large hydraulic jack is connected flange and is connected with two parallel surfaces of Lubricating oil tank respectively with concrete cylinder, two parallel surfaces of this of Lubricating oil tank have respectively been processed a coaxial circular hole, circular hole cooperates with the seam of the flange of large hydraulic jack and concrete cylinder, realize the axiality of large hydraulic jack and concrete cylinder, large hydraulic jack range controlling mechanism has been installed on Lubricating oil tank, range controlling mechanism is by two fixing sliding sleeves, a stroke guide rod, two travel switch A and travel switch B, a fixed block and a striking plate form, 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, two fixedly the stroke guide rod between the sliding sleeve striking plate has been installed, striking plate is comprised 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, at pipe a holding screw is arranged, making pipe can not follow the journey guide rod slides, there is a U-shaped 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 large hydraulic jack, fixed block is installed in an end of stroke guide rod, and between two travel switch A and travel switch B, two travel switch A are connected circuit and are connected with the 3-position 4-way solenoid operated directional valve of control oscillating oil cylinder oil circuit respectively with travel switch B, 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 forms, 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 form, 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 joint 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, at oscillating oil cylinder a range controlling mechanism have been installed, and range controlling mechanism is by the stroke guide rod, a fixed block, one fixedly sliding sleeve and two travel switch C and travel switch D form, fixedly sliding sleeve and two travel switch C and travel switch D 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 switch C and travel switch D, two travel switch C are connected circuit and are connected with the 3-position 4-way solenoid operated directional valve of large hydraulic jack oil circuit control with travel switch D, at the oil circuit of oscillating oil cylinder two position and four-way reversing valves have been installed, and implement the anti-pump operation that commutates.

The stirring feeding system of described small-sized concrete conveying pump car is 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 form, two guide rails are channel-section steel structures, be connected as a single entity by bottom connecting plate and top junction plate, elevating mechanism is by four directive wheels, bottom connecting plate and two risers form, bottom connecting 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 guide rail bottom connecting plate, 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 guide rail bottom connecting plate, by being connected respectively on the elevating mechanism bottom connecting plate behind two runners, two gear wheels are installed in respectively two guide rail tops 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, at the output shaft of hydraulic motor a shaft has been installed, several stirrer gears have been installed on the shaft, the position of stirring hopper is lower, kiss the earth.

The reverse fold arm system of described small-sized concrete conveying pump car is by Multi-stage plunger cylinder, sleeve, bearing, the first segment folding arm, first segment folding arm oscillating oil cylinder, second section folding arm and second section folding arm oscillating oil cylinder form, Multi-stage plunger cylinder is installed on the walking chassis, the top of the thinnest plunger of Multi-stage 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 top of sleeve and first segment folding arm are hinged, between sleeve and the first segment folding arm oscillating oil cylinder has been installed also, under the effect of oscillating oil cylinder, the first segment folding arm can swing around hinge, hinged between first segment folding arm and the second section folding arm, the second section folding arm is an elephant trunk, at the second section folding arm conveying rubber pipe joint, conveying rubber pipe and a concrete pump have been installed.Send the discharging opening of the triplet commutation rotary valve of system to be communicated with, between first segment folding arm and second section folding arm, oscillating oil cylinder has been installed also, oscillating oil cylinder is by quadrilateral connecting rod, and drive second section folding arm swings this small-sized concrete conveying pump car around hinge and has 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 workman's labour intensity

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

Fig. 1 is the structural representation of small-sized concrete conveying pump car

Fig. 2 is the working state structure schematic diagram of small-sized concrete conveying pump car

Structural representation when Fig. 3 is the outside delivering concrete state of concrete cylinder of single cylinder pumping system of small-sized concrete conveying pump car

Structural representation when Fig. 4 is the inside inspiration concrete of the concrete cylinder state of single cylinder pumping system of small-sized concrete conveying pump car

Fig. 5 is the front schematic view of the stirring feeding system of small-sized concrete conveying pump car

Fig. 6 is the side cross-sectional view of the stirring feeding system of small-sized concrete conveying pump car

Side cross-sectional view when Fig. 7 is the stirring feeding system batch turning of small-sized concrete conveying pump car

Fig. 8 is the striking plate structural representation of small-sized concrete conveying pump car

Fig. 9 is the cross-sectional view of the triplet commutation rotary valve shell of small-sized concrete conveying pump car

Figure 10 is the vertical section structure schematic diagram of the triplet commutation rotary valve bent axle of small-sized concrete conveying pump car

Figure 11 is the cross section structure schematic diagram of the triplet commutation rotary valve bent axle of small-sized concrete conveying pump car

Figure 12 is the hydraulic principle schematic diagram of small-sized concrete conveying pump car

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, 6-second section folding arm, 7-first segment folding arm oscillating oil cylinder, the 8-bearing, the 9-sleeve, the 10-plunger cylinder, 11-second section folding arm oscillating oil cylinder, 12-first segment folding 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, the large concrete cylinder piston rod of 21-and concrete cylinder piston adpting flange, the 22-Lubricating oil tank, 23-tightrope, 24 large hydraulic jacks, 25 large hydraulic cylinder pistons, the large oil pocket hydraulic fluid port of 26 large hydraulic jacks, the large hydraulic jack small oil cavity of 27-hydraulic fluid port, the large hydraulic cylinder piston rod of 28-, the 29-road wheel, 30-is sliding sleeve fixedly, 31-striking plate, 32-stroke guide rod, 33-travel switch A, the 34-fixed block, 35-travel switch B, 36-end cap, the 37-swing arm, the 38-hinge, 39-stroke guide rod, 40-is sliding sleeve fixedly, 41-travel switch C, the 42-fixed block, 43-oscillating oil cylinder, 44-travel switch D, 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 connecting plate, 54-elevating mechanism bottom connecting 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 hoppers, 61 shafts, 62 stirrer gears, 63 pipes, 64 open plate, 65 concrete cylinder mouth connectors, 66 charging apertures, 67 discharging openings, 68 central rotating shafts, 69 fanning strips, 70 arcs, the large hydraulic jack three position four-way directional control valve of 71-, the three position four-way directional control valve of 72-oscillating oil cylinder, 73 anti-pump two-position four way change valves, the three position four-way directional control valve of 74 hydraulic motors, 75 hydraulic motors, the three position three-way change valve of 76-plunger cylinder, the three position three-way change valve of 77-folding arm lifting plunger cylinder, the three position four-way directional control valve of 78 first segment folding arm oscillating oil cylinders, the three position four-way directional control valve of 79 second section folding arm oscillating oil cylinders, 80-riser, the 81-stationary hopper, the 82-central rotating shaft

The specific embodiment:

In Fig. 1 and Fig. 2, the small-sized concrete conveying pump car is manually moved to the room that will construct, start the motor of concrete pumping system 19, stirring feeding system 14 and reverse fold arm system 2, each oil pump begins to rotate.Three position three-way change 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 operation first segment folding arm 12, oil pump is to the large oil pocket fuel feeding of the oscillating oil cylinder 7 of first segment folding arm, make 12 one-tenth vertical states of first segment folding arm, three position four-way directional control valve 79 commutations of the oscillating oil cylinder 11 of operation second section folding arm, oil pump is to the large oil pocket fuel feeding of the oscillating oil cylinder 79 of second section folding arm, make the discharging opening of second section folding arm facing to the place of wanting concreting, manually can rotate second section folding arm 6, it can be rotated around central rotating shaft 82, change the place of concreting, joint 5 on the second section folding arm 6 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 three position three-way change 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 wheel 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, then operate three position three-way change valve 76 commutations, under hopper 60 and elevating mechanism 49 action of gravitations, the plunger retraction of plunger cylinder 52, until lift hopper 60 drops to extreme lower position, again add concrete to lift hopper 60 ... 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 oil pump to the large oil pocket fuel feeding of 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 simultaneously piston rod of oscillating oil cylinder 43 drive stroke 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 large oil pocket fuel feeding of large tank 24, piston rod 28 begins to stretch out, promote the piston 45 of concrete cylinder 20 to movement is arranged, 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 34 on the stroke guide rod 32 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 42 on the stroke guide rod 39 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 together fast moving left of concrete cylinder pistons 45, 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, constantly inspiration concrete and pump concrete.

When the concrete conveyance blockage or when having 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, then the small-sized concrete conveying pump car is moved to next construction room, repeat aforesaid operations.

Claims

1. small-sized concrete conveying pump car, it is comprised 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-sized concrete conveying pump car according to claim 1, it is characterized in that: single cylinder concrete pumping system (19) is by hydraulic power unit, electrical control system, a large hydraulic jack (24), a concrete cylinder (20), a triplet commutation rotary valve (18), a stationary hopper (81), an oscillating oil cylinder (43), large hydraulic jack (24) range controlling mechanism and an oscillating oil cylinder (43) range controlling mechanism form, large hydraulic jack (24) and concrete cylinder (20) all are that level is installed on the walking chassis (1), the piston rod (28) of large hydraulic jack (24) is connected with flange (21) with the piston (45) of concrete cylinder (20), between large hydraulic jack (24) and concrete cylinder (20), a rectangular Lubricating oil tank (22) is arranged, large hydraulic jack (24) is connected 20 with concrete cylinder) flange be connected with two parallel surfaces of Lubricating oil tank (22) respectively, two parallel surfaces of this of Lubricating oil tank (22) have respectively been processed a coaxial circular hole, circular hole cooperates with the seam of the flange of large hydraulic jack (24) and concrete cylinder (20), large hydraulic jack (24) range controlling mechanism has been installed on Lubricating oil tank (22), range controlling mechanism is by two fixing sliding sleeves (30), a stroke guide rod (32), two travel switch A (33) and travel switch B (35), a fixed block (34) and a striking plate (31) form, 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), two fixedly the stroke guide rod (32) between the sliding sleeve (30) striking plate (31) has been installed, striking plate (31) is comprised 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), at pipe (63) holding screw is arranged, there is a U-shaped 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 large hydraulic jack (24), fixed block (34) is installed in an end of stroke guide rod (32), and be positioned between two travel switch A (33) and the travel switch B (35), two travel switch A (33) are connected 35 with B) circuit be 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) forms, 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), two ends central rotating shaft (68) and an arc (69) form, 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), and 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), and stationary hopper (81) is in the top of triplet commutation rotary valve (18), and 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 joint 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, at oscillating oil cylinder (43) range controlling mechanism has been installed, range controlling mechanism is by stroke guide rod (39), a fixed block (42), a fixing sliding sleeve (40), two travel switch C (41) and travel switch D (44) form, and fixedly sliding sleeve (40) and two travel switch C (41) and travel switch D (44) 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), and the other end that stroke guide rod (39) passes behind the fixing sliding sleeve (40) has been installed fixed block (42), and fixed block (42) is positioned between two travel switch C (41) and the travel switch D (44), two travel switch C (41) are connected 44 with travel switch D) circuit be connected with the 3-position 4-way solenoid operated directional valve (71) of large hydraulic jack (24) oil circuit control, at the oil circuit of oscillating oil cylinder (43) two-position four way change valve (73) has been installed.

3. small-sized concrete conveying pump car according to claim 1, 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) form, two guide rails (48) are the channel-section steel structures, be connected as a single entity by bottom connecting plate (53) and top junction plate (59), elevating mechanism (49) is by four directive wheels (50), bottom connecting plate (54) and two risers (80) form, bottom connecting 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) around the shaft (55) rotates, lift ram oil cylinder (52) is positioned between two guide rails (48), and be installed on the guide rail bottom connecting 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 connecting plate (53), by being connected respectively to behind two runners (56) on the elevating mechanism bottom connecting plate (54), two gear wheels (46) are installed in respectively two guide rail (48) tops 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), at the output shaft of hydraulic motor (75) shaft (61) has been installed, stirrer gear (62) has been installed on the shaft (61), the position of stirring hopper (60) is lower, kiss the earth.

4. small-sized concrete conveying pump car according to claim 1, it is characterized in that: reverse fold arm system (2) is by Multi-stage plunger cylinder (10), sleeve (9), bearing (8), first segment folding arm (12), first segment folding arm oscillating oil cylinder (7), second section folding arm (6) and second section folding arm oscillating oil cylinder (11) form, Multi-stage plunger cylinder (10) is installed on the walking chassis (1), the top of the thinnest plunger of Multi-stage 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 top of sleeve (9) and first segment folding arm (12) are hinged, between sleeve (9) and the first segment folding arm (12) first segment folding arm oscillating oil cylinder (7) has been installed also, hinged between first segment folding arm (12) and the second section folding arm (6), second section folding arm (6) is an elephant trunk, at second section folding arm (6) 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 first segment folding arm (12) and second section folding arm (6) second section folding arm oscillating oil cylinder (11) has been installed also, second section folding arm oscillating oil cylinder (11) is hinged by quadrilateral connecting rod (4) and second section folding arm (6).