Concrete pump main power system and concrete pump
Technical field
The present invention relates to a kind of concreting machinery, particularly relate to a kind of concrete pump main power system and concrete pump.
Background technique
Concrete pump is a kind of equipment in the cement concrete machinery, is used for delivering concrete on Vertical direction or substantially horizontal.Because of concrete pump has efficient height, mechanization degree height, can adapt to characteristics such as different operating environments and environmental pollution are lighter, extensive use in the modern architecture industry.
Concrete pump generally comprises hopper, pumping system, conveyance conduit, part that main power system is relevant with other.Hopper is used to hold or temporarily stores concrete; Pumping system is used for the concrete pump in the hopper is delivered in the conveyance conduit, and in general, pumping system comprises two oil hydraulic cylinders, utilizes the alternate reciprocating motion of two hydraulic cylinder pistons that concrete continuous is pumped into conveyance conduit; Conveyance conduit to eminence or job location at a distance, is realized transmission and concrete transmission to concrete remote conveying; And pumping system provides power by main power system, and main power system generally comprises power source and main oil pump, and drive power source main oil pump work for the oil hydraulic cylinder of pumping system provides high pressure oil, guarantees the proper functioning of pumping system.In addition, concrete pump comprises the accessory power system of auxiliary oil pump in addition, for other parts of concrete pump provide driving force.
At present, the main power system in the existing concrete transfer pump is the basic dual mode that adopts on system layout: a kind of mode is to adopt diesel engine as power source, and the flywheel of diesel engine links by the pump shaft of coupling and main oil pump.During diesel engine work, drive the main oil pump rotation, main oil pump output high pressure oil, high pressure oil promotes hydraulic cylinder works, drives the hydraulic cylinder piston to-and-fro motion of pumping system, and concrete is transferred out by conveyance conduit; Another kind of mode then is to adopt motor as power source, and the line shaft of motor links by the pump shaft of coupling and main oil pump, during motor work, the rotation of driving main oil pump, main oil pump output high pressure oil drives the hydraulic cylinder piston to-and-fro motion, and concrete is transferred out by conveyance conduit.
Because diesel engine noise is big, control is inconvenient, and volume and weight is bigger, and transportation is also inconvenient.Add that current oil price rises steadily, the reasons such as raising of environmental protection consciousness, the application of diesel engine constantly is restricted.And motor obtains using more widely in the concrete pump main power system owing to possess reasonable comprehensive advantage.
Patent No. CN200620099593.2 discloses a kind of main power system of concrete pump, and as shown in Figure 1, the concrete pump power system of this patent disclosure comprises: motor 1, coupling arrangement 2 and main oil pump 3.Coupling arrangement 2 comprises shell 2-1, motor reel flange 2-2, pump shaft flange 2-3 and pin 2-4, described motor reel flange 2-2 socket is fixed on motor 1 line shaft end, pump shaft flange 2-3 socket is fixed on main oil pump 3 pump shaft ends, connect with pin 2-4 between motor reel flange 2-2 and the pump shaft flange 2-3, the shell 2-1 of described coupling arrangement 2 is connected and fixed motor 1 body and main oil pump 3 pump housings.Like this, after motor 1 starts, motor 1 line shaft can drive the pump shaft rotation of main oil pump 3 by coupling arrangement 2, main oil pump 3 just can be exported certain high-pressure and hydraulic oil when pump shaft rotates, the high-pressure and hydraulic oil of output can drive the hydraulic cylinder works of pumping system, for concrete pump provides hydraulic power, realize concrete remote conveying.
Though above-mentioned prior art can be transformed into hydraulic power with electric power, thereby for concrete pump provides hydraulic power,, along with the development of modern architecture industry, tall building is on the increase, and the height of conveying also constantly increases; Speed of application is also constantly accelerated in addition, and every layer of engineering time shortened to present 4-5 days by original 7-8 days.The variation of building industry requires concrete pump can satisfy the needs of building industry, increase the delivery head of concrete pump and the speed of conveying, just, increase the ability of concrete pump delivering concrete, and the conveying capacity of increase concrete pump will increase the ability to work of concrete pump pumping system oil hydraulic cylinder; Improve the ability to work of concrete pump pumping system oil hydraulic cylinder, factor will increase the supply of high pressure oil oil mass greatly.Therefore, increasing the high pressure oil mass that main oil pump pumps is that the modern architecture industry is to one of concrete pump power system requirement.
In order to satisfy of the requirement of modern architecture industry to the concrete pump power system, people adopt the oil hydraulic pump of bigger discharge capacity as main oil pump usually, or,, satisfy the building needs to increase the high pressure oil oil mass that main oil pump pumps with two oil hydraulic pumps composition main oil pump that is together in series.Though this can directly increase the hydraulic-oil quantity that main oil pump pumps, ignored the problem that main oil pump pump oil ability can not be given full play to.Because the motor rated speed is lower, generally have only 1480 rev/mins, and in the concrete pump, the maximum functional rotating speed of main oil pump is generally 2000 rev/mins, therefore, be in the concrete pump of power source at motor, the maximum functional rotating speed of the rotating ratio main oil pump of motor is little by 1/3rd more than, so just restrict the performance of main oil pump pump functional oil greatly, also wasted the main oil pump resource.Simultaneously, owing to adopt the oil hydraulic pump of bigger discharge capacity, or be composed in series main oil pump with two or more oil hydraulic pumps, also increased the concrete pump manufacture cost.
Summary of the invention
At above-mentioned technical problem, the objective of the invention is to, provide a kind of concrete pump main power system, to give full play to the pump functional oil of main oil pump.
In addition, the present invention also provides a kind of cost lower concrete pump main power system.
Based on above-mentioned concrete pump main power system, the present invention also provides a kind of concrete pump.
Concrete pump main power system provided by the invention comprises motor, main oil pump, described motor comprises line shaft, described main oil pump comprises first oil hydraulic pump, described first oil hydraulic pump comprises first pump shaft, it is characterized in that, also comprise speed increaser, described speed increaser comprises the speed increaser shell, input shaft, first output shaft, driving wheel and first follower; The described input shaft and first output shaft are installed in respectively on the speed increaser shell, and described driving wheel is installed on the input shaft; Described first follower is installed on first output shaft; Described driving wheel can drive the rotation of first follower, and the velocity ratio between the described driving wheel and first follower is less than 1; Described line shaft and input shaft link; Described first output shaft and first pump shaft link.
Preferably, the velocity ratio between the described driving wheel and first follower is 0.6-0.8.
Preferably, described driving wheel is a driving gear, and described first follower is first driven gear; Described driving gear is meshed with first driven gear.
Preferably, described driving wheel is a driving gear, and described first follower is first driven gear; Described speed increaser comprises that also one is installed in the intermediate gear on the speed increaser housing, and described intermediate gear is meshed with the driving gear and first driven gear.
Preferably, described driving wheel is a drive sprocket, and described first follower is first driven sprocket; Described speed increaser also comprises Transmitted chains, and described Transmitted chains is used to connect the described drive sprocket and first driven sprocket.
Preferably, also comprise coupling; Between described line shaft and the input shaft and, have at least a place to link between first output shaft and first pump shaft by coupling.
Preferably, described first oil hydraulic pump is the simply connected oil hydraulic pump.
Preferably, this concrete pump main power system also comprises second output shaft, second follower, and described main oil pump also comprises second oil hydraulic pump, and described second oil hydraulic pump comprises second pump shaft; Described second output shaft is installed on the speed increaser shell; Described second follower is installed on second output shaft; Described driving wheel can drive the rotation of second follower; Velocity ratio between the described driving wheel and second follower is less than 1; Described second output shaft and second pump shaft link.
Preferably, also comprise coupling; Between described line shaft and the input shaft, between first output shaft and first pump shaft and, between second output shaft and second pump shaft, have at least a place to link by coupling.
Preferably, described driving wheel is a driving gear, and described first follower and second follower are respectively first driven gear and second driven gear; Described driving gear is meshed with first driven gear and second driven gear.
Preferably, between described line shaft and the input shaft, between first output shaft and first pump shaft, and link by coupling between second output shaft and second pump shaft.
Preferably, described coupling comprises two flange plate and spring column pin, and two flange plate are linked together by spring column pin; Described two flange plate are set on two axles that link.
Concrete pump provided by the invention comprises hopper, pumping system, conveyance conduit and main power system, and described hopper is used to hold or store concrete; Described pumping system comprises two oil hydraulic cylinders, the alternate reciprocating motion of described two hydraulic cylinder pistons can with the concrete continuous of hopper be pumped into conveyance conduit; Described conveyance conduit can be with transmission and concrete transmission to far away or higher position; Main power system can provide hydraulic oil for the oil hydraulic cylinder of pumping system, described main power system is above-mentioned concrete pump main power system, and the hydraulic oil of main oil pump outlet links to each other by hydraulic tube with oil hydraulic cylinder in the pumping system in the described concrete pump main power system.
Compared with prior art, concrete pump main power system provided by the invention increases speed increaser between motor and main oil pump, by the rotating speed raising back drive main oil pump work of speed increaser with motor; Because the main oil pump input speed improves, can give full play to the pump functional oil of main oil pump, increase the discharge capacity of main oil pump.Therefore, concrete pump main power system provided by the invention can improve main oil pump oil extraction flow, gives full play to oil hydraulic pump pump functional oil, satisfies the modern architecture industry to concrete pump power system requirement.
In further technological scheme, velocity ratio between driving wheel and the follower is made as 0.6~0.8, can make main oil pump under motor rated speed situation, the output speed of motor is increased to main oil pump maximum functional rotating speed, realize the optimum Match of input speed and main oil pump pump functional oil, reach the main oil pump maximum operating speed, can bring into play the pump functional oil of main oil pump better, for concrete pump provides more high pressure oil.
In further technological scheme, mode with meshed transmission gear realizes speedup, can guarantee the stability of transmission campaign and velocity ratio simultaneously, also can satisfy the needs that main oil pump runs up, gear transmission also possesses the smaller advantage that takes up room in addition, is convenient to the layout of speed increaser.
In further technological scheme, oil hydraulic pump is made as the oil hydraulic pump of simply connected, can give full play on the basis of oil hydraulic pump pump functional oil guaranteeing, reduce the manufacture cost of concrete pump main power system.
In further technological scheme, speed increaser is provided with two output shafts, can satisfy the needs of establishing the oil hydraulic pump of two parallel connections on the current concrete pump, satisfies concrete pump to the more requirement of big-flow high-pressure oil.
In further technological scheme, with spring column pin two flange plate are connected to form coupling, can make coupler structure fairly simple on the one hand, reduce manufacture cost; On the other hand, spring column pin can absorb the radial deflection or the axial error of transmission shaft, plays the function of vibration reduction and cushioning, guarantees the reliability of transmission.
Because the concrete pump main power system has above-mentioned technique effect, comprises that the concrete pump of above-mentioned concrete pump main power system also has the corresponding techniques effect.
Concrete pump main power system provided by the invention is applicable to the concrete conveying of building industry, and being specially adapted to provides power for concrete pump.
Description of drawings
Fig. 1 is the concrete pump main power system structural representation that prior art provides;
Fig. 2 is the concrete pump main power system structural representation that the embodiment of the invention provides;
Fig. 3 is an I-I part structure for amplifying schematic representation among Fig. 2;
Fig. 4 be among Fig. 2 A to structural representation;
Fig. 5 is another embodiment's speed increaser structural representation.
Fig. 1 is in Fig. 5:
Motor 1, line shaft 11, first oil hydraulic pump 3;
Coupling arrangement 2, shell 2-1, motor reel flange 2-2, pump shaft flange 2-3, pin 2-4;
Coupling 5, coupling 6, flange plate 51, flange plate 52, spring column pin 53, coupling shell 54;
Speed increaser 4, speed increaser shell 40, input shaft 41, first output shaft 43, driving gear 42, first driven gear 44, second output shaft 45, second driven gear 46.
Embodiment
Below in conjunction with accompanying drawing content of the present invention is described, following description only is exemplary or explanatory, unless otherwise specified, should any restriction not arranged to the scope of protection of the invention.
Embodiment one provides a kind of concrete pump main power system with the gear transmission speedup, as shown in Figure 2, the concrete pump main power system that this example provides comprises motor 1, first oil hydraulic pump 3 and coupling 5,6, speed increaser 4, clear for what express, also show base 100 among the figure, described concrete pump main power system just is fixed on the base 100, general concrete pump main power system comprises main oil pump and auxiliary oil pump, main oil pump comprises that first oil hydraulic pump, 3, the first oil hydraulic pumps 3 comprise the first pump shaft (not shown) in this example.In this example, in order to reduce concrete pump main power system cost, first oil hydraulic pump 3 is the simply connected oil hydraulic pump.Below respectively to coupling 5 or 6 and the structure of speed increaser 4 be described.
As shown in Figure 3; described coupling 5 comprises two flange plate 51,52 and spring column pin 53; in addition; among the figure; also show coupling shell 54; coupling shell 54 two ends are fixed with the body of motor 1 and the speed increaser shell of speed increaser 4 respectively, realize function dustproof, waterproof, and play the effect of protection flange plate 51,52 and spring column pin 53.The flange plate 51 of coupling 5 is sleeved on the line shaft 11 of motor 1, flange plate 52 is sleeved on the input shaft 41 of speed increaser 4, link together with spring column pin 53 between two flange plate 51,52, like this after motor 1 starts, the input shaft 41 that line shaft 11 can drive speed increaser 4 rotates synchronously, spring column pin 53 between two flange plate 51,52 can absorb the line shaft 11 of motor 1 and the radial deflection of the input shaft 41 of speed increaser 4, and can allow axial error, play the function of vibration reduction and cushioning, guarantee the reliability of transmission.The structure of coupling 6 is identical with coupling 5, and its structure repeats no more.Two flange plate of coupling 6 are sleeved on first output shaft 43 of speed increaser 4 and first pump shaft of first oil hydraulic pump 3 respectively.Those skilled in the art can understand, in actual production and using, coupling also has polytype, can select the coupling of different structure according to different working environments for use, such as, can be: pawl formula, telescopic, screw free fixed or other rubber type coupling or other rigid couplings or the like.Certainly, coupling 5 can be identical with coupling 6, also can be different.It will be appreciated by those skilled in the art that, for connecting between line shaft and the input shaft, between first output shaft and first pump shaft multiple mode being arranged, such as, under the situation that guarantees axle head processing and assembly precision, can on line shaft, establish spline, and on input shaft, establish the spline that matches with spline, realize transmission by cooperatively interact spline and spline, or the like.
In this example, realize transmission, realize the increase of rotating speed by the difference of pitch circle radius by gear meshing.As shown in Figure 4, speed increaser 4 comprises speed increaser shell 40, input shaft 41, first output shaft 43, driving gear 42, first driven gear 44.In this example, the driving gear 42 and first driven gear 44 all are spur gear wheels, and described input shaft 41 and first output shaft, 43 axis are parallel to each other, and are installed in respectively on the speed increaser shell 40; Driving gear 42 is assemblied on the input shaft 41, and be running shaft with input shaft 41, first driven gear 44 is assemblied on first output shaft 43, and be running shaft with first output shaft 43, the driving gear 42 and first driven gear 44 are meshing with each other, like this, and when input shaft 41 rotations, engagement by the driving gear 42 and first driven gear 44 just can drive 43 rotations of first output shaft, by first output shaft, 43 outputting powers.Elsewhere, in this example, it will be appreciated by those skilled in the art that, in driving gear 42 Pitch radiuss during greater than first driven gear, 44 Pitch radiuss, first output shaft 43 rotating speed that rotatablely moves is improved, realize the purpose of speedup, optionally technological scheme is that scope with the ratio of the Pitch radius of the driving gear 42 and first driven gear 44 is located between 1: 0.5~1: 0.9, preferred range is between 1: 0.6~1: 0.8, and the velocity ratio of the driving wheel and first follower is remained between 0.6~0.8.In this example, the velocity ratio of the driving gear and first driven gear is 0.7; Like this, speed increaser 4 can increase by 1/3 with the rotating speed that rotatablely moves of motor 1 output, thereby the maximum output speed of speed increaser 4 can be increased to 2000 rev/mins, first output shaft of speed increaser 4 can drive first oil hydraulic pump and rotate with the first oil hydraulic pump maximum (top) speed, realize the optimum Match of the input speed and the first oil hydraulic pump pump functional oil, give full play to the pump oil ability of first oil hydraulic pump.In this example, mode with gear engagement realizes speedup, can guarantee the stability of transmission campaign and velocity ratio simultaneously, can satisfy the needs that first oil hydraulic pump runs up simultaneously, gear transmission also possesses the smaller advantage that takes up room in addition, is convenient to the layout of speed increaser 4.It will be understood by those skilled in the art that and realize that speedup also has a lot of concrete modes, with regard to gear engagement, gear also is not limited to cylindrical gears, also can be the worm and gear transmission.In addition, driving mechanism also can be the driving mechanism of other types, such as, can driving wheel and first follower be set to drive sprocket and driven sprocket, with Transmitted chains drive sprocket is linked to each other with driven sprocket, drive sprocket can drive the driven sprocket rotation.Same principle as long as the external diameter of drive sprocket just can be realized the rotating speed of the rotating speed of driven sprocket greater than drive sprocket greater than the external diameter of driven sprocket, makes the first output shaft rotating speed greater than input shaft rotational speed.Based on same principle, those skilled in the art can also associate the more kind of drive, as belt transmission, and friction driving, wherein belt transmission can be the flat belt transmission, also can be the vee belt transmission, Toothed belt or the like.It will be appreciated by those skilled in the art that, above-mentioned structure is not limited to driving wheel and the direct transmission of first follower, also comprise indirect drive mechanism, such as, in order to satisfy the requirement of specific environment, can between the driving gear and first driven gear, establish the intermediate gear that is fixed on the speed increaser housing, and intermediate gear and driving gear and first driven gear are meshed simultaneously, the driving gear and first driven gear are separated, during the driving gear rotation, just can drive the rotation of first driven gear by intermediate gear; In order to reduce the speed increaser occupation space, can also between the driving gear and first driven gear, establish planetary pinion, can realize purpose of the present invention equally.
The concrete pump main power system that this example is provided is carried out general description below.As shown in Figure 2, the line shaft 1 of motor 1 links to each other with the input shaft 41 of speed increaser 4 by coupling 5, first output shaft 43 of described speed increaser 4 links by first pump shaft of the coupling 6 and first oil hydraulic pump 3, coupling shell 54 two ends of coupling 5 fix with the body of motor 1 and speed increaser shell 40 1 sides of speed increaser 4 respectively, and the coupling shell of coupling 6 (not marking among the figure) two ends are fixed with speed increaser shell 40 opposite sides and first oil hydraulic pump, 3 pump cases respectively.Its working procedure is: motor 1 rotation, its line shaft 11 drives input shaft 41 rotations of speed increaser 4 by coupling 5, after the driving gear 42 of speed increaser 4 and the engagement of first driven gear 44 the rotating speed raising with input shaft 41, by 43 outputs of first output shaft, first output shaft 43 drives first pump shaft rotation of first oil hydraulic pump 3 by coupling 6, the rotating speed of motor 1 line shaft 11 is through behind the speed increaser 4, its rotating speed can reach the first oil hydraulic pump maximum functional rotating speed, and first oil hydraulic pump pump oil ability is given full play to; Form under the situation of first oil hydraulic pump 3 at an oil hydraulic pump, the increase of rotating speed can improve the discharge capacity of high pressure oil, satisfies the needs that drive concrete pump, needn't therefore can reduce the manufacture cost of concrete pump main power system again with a plurality of oil hydraulic pump series connection.
Utilize in the concrete pump of motor for power source current, can pass through to adopt the oil hydraulic pump of bigger discharge capacity, or, realize improving the purpose that first oil hydraulic pump pumps the flow of hydraulic oil by two oil hydraulic pumps are composed in series main oil pump.But, owing to motor power axle rotating ratio is lower, adopt to reach oil hydraulic pump maximum functional rotating speed in such a way, can not give full play to the pump functional oil of oil hydraulic pump, caused the waste of oil hydraulic pump pump functional oil resource.The present invention starts with from the new technical conceive direction of another one, between motor and oil hydraulic pump, increase a speed increaser, the pump shaft rotating speed is improved, when realizing that increasing oil hydraulic pump pumps the flow of hydraulic oil, make the oil hydraulic pump input speed reach the maximum functional rotating speed, can give full play to the pump oil ability of oil hydraulic pump.
In this example, first oil hydraulic pump 3 is a gear type oil hydraulic pump, and the gear type oil hydraulic pump has simple in structure, volume is little, light weight, good manufacturability, low price, suction capacity is strong, and is insensitive to oil contamination, speed range is big, easy to maintenance, the advantage of reliable operation goes for working environment less demanding, to the workplace that discharge capacity will be aspired for stability, satisfy corresponding work requirement.In addition, in this example, the gear type oil hydraulic pump is the simply connected oil hydraulic pump, because motor 1 rotatablely moves through behind the speed increaser 4, the output movement of speed increaser 4 can reach gear type oil hydraulic pump maximum functional rotating speed, and therefore, it discharges the needs that the high pressure oil oil mass also can satisfy operation; Needn't can reduce the manufacture cost of concrete pump again with a plurality of oil hydraulic pump series connection.It will be appreciated by those skilled in the art that, require high at working environment, need to adjust the workplace of hydraulic oil discharge capacity, can select for use pluger type hydraulic pump as first oil hydraulic pump, because pluger type hydraulic pump is easy to process, obtain higher quality of fit easily, good airproof performance, the volumetric efficiency height, the working pressure height.Therefore, it is first oil hydraulic pump that those skilled in the art can select different oil hydraulic pumps for use according to different job requirements, to satisfy different requirements.
The foregoing description is that example is described with an output shaft, in actual production, in order to satisfy needs to concrete pump big-flow high-pressure oil, need oil hydraulic pump with two parallel connections of a motoring, provide high pressure oil with the oil hydraulic pump of two associations for concrete pump.At this moment, just need concrete pump that two output terminals are arranged, to drive two oil hydraulic pumps in parallel.As Fig. 5, another embodiment just provides the concrete pump main power system of another kind of structure, the structure in the speed increaser of this system in having embodiment one, also comprise second output shaft 45, second driven gear 46, described main oil pump also comprises second oil hydraulic pump, and second oil hydraulic pump comprises the second pump shaft (not shown); Second output shaft 45 is installed on the speed increaser shell 40; Described second driven gear 46 is installed on second output shaft 45; Driving gear 42 is meshed with second driven gear 46, can drive 46 rotations of second driven gear; Transmission between the described driving gear 42 and second driven gear 46 is also than less than 1, and to realize the increase of rotational speed, described second output shaft 45 and second pump shaft link, and drive second oil hydraulic pump.Certainly also can connect between input shaft and second output shaft 45, can reach the purpose of increase rotating speed equally by the mode of coupling; Between driving wheel and first follower and the velocity ratio between the driving wheel and second follower can be identical, also can be inequality.Its basic functional principle is identical with last example, does not repeat them here.
On the basis that above-mentioned concrete pump main power system is provided, the present invention also provides a kind of concrete pump, and this concrete pump comprises hopper, pumping system, conveyance conduit and main power system, and described hopper is used to hold or store concrete; Described pumping system comprises two oil hydraulic cylinders, the alternate reciprocating motion of described two hydraulic cylinder pistons can with the concrete continuous of hopper be pumped into conveyance conduit; Described conveyance conduit can be with transmission and concrete transmission to far away or higher position; Main power system can provide hydraulic oil for the oil hydraulic cylinder of pumping system, described power system is above-mentioned concrete pump main power system, and the hydraulic oil of first oil hydraulic pump outlet links to each other by hydraulic tube with oil hydraulic cylinder in the pumping system in the described concrete pump main power system.In addition, concrete pump can also comprise the chassis that can tow, and described hopper, pumping system, conveyance conduit and main power system are installed on the described chassis, fixes with described chassis, is convenient to towing of concrete pump, the conversion process place.
The above only is a preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.