CN101705928A - Concrete transfer pump - Google Patents
Concrete transfer pump Download PDFInfo
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- CN101705928A CN101705928A CN200910238369A CN200910238369A CN101705928A CN 101705928 A CN101705928 A CN 101705928A CN 200910238369 A CN200910238369 A CN 200910238369A CN 200910238369 A CN200910238369 A CN 200910238369A CN 101705928 A CN101705928 A CN 101705928A
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- oil cylinder
- concrete
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- 239000003921 oil Substances 0.000 claims abstract description 184
- 230000033001 locomotion Effects 0.000 claims abstract description 51
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 49
- 238000000034 method Methods 0.000 claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 18
- 230000008569 process Effects 0.000 claims abstract description 15
- 239000012530 fluid Substances 0.000 claims description 35
- 239000000945 filler Substances 0.000 claims description 29
- 230000000694 effects Effects 0.000 claims description 22
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 230000009471 action Effects 0.000 abstract description 2
- 238000012423 maintenance Methods 0.000 description 6
- 230000008439 repair process Effects 0.000 description 5
- 238000010276 construction Methods 0.000 description 4
- 230000005611 electricity Effects 0.000 description 2
- 239000002828 fuel tank Substances 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
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Abstract
The invention discloses a concrete transfer pump comprising a main oil cylinder, a concrete cylinder and a water tank arranged between the main oil cylinder and the concrete cylinder; the main oil cylinder is internally provided with a main piston connected with a concrete piston arranged in the concrete cylinder through a main piston rod, and the main piston drives the concrete piston to do reciprocating motion under the action of hydraulic oil in the main oil cylinder; the end part of the main oil cylinder is also provided with a multi-stage oil cylinder which limits the motion stroke of the main piston by a way of supporting against the main piston; and the motion stroke of the main piston is shifted between a working stroke and a dismantling stroke through the protrusion or retraction of the multi-stage oil cylinder. In the embodiment, when the concrete piston of the concrete transfer pump is maintained, the concrete piston can be directly withdrawn to the water tank through retracting the multi-stage oil cylinder so as to be dismantled with simple process and short time; meanwhile, the concrete transfer pump has compact whole structure and small size.
Description
Technical field
The embodiment of the invention relates to concrete tranmission techniques field, relates in particular to a kind of concrete transfer pump.
Background technique
During concrete transfer pump work, the concrete piston need be reciprocating in the concrete cylinder, so that concrete is pressed in the conveyance conduit, therefore, the concrete piston is the critical component in the concrete transfer pump, simultaneously, owing to need directly contact with concrete, the concrete piston also is an easily worn part, needs often dismounting and maintenance.
Fig. 1 is the structural representation of existing concrete transfer pump.As shown in Figure 1, in the existing concrete transfer pump, connect by dismountable connecting rod 12 between concrete piston 10 and the main piston rod 11, during proper functioning, main piston rod 11 can be in master cylinder 13 under the effect of hydraulic oil, drive 10 to-and-fro motion in concrete cylinder 14 of concrete piston by connecting rod 12, so that concrete is pressed in the conveyance conduit.And damage need safeguard the time when concrete piston 10, then need concrete piston 10 is fallen back in the tank 15 from concrete cylinder 14, so that concrete piston 10 is pulled down maintenance, wherein, dismounting concrete piston 10 needs as follows order to carry out: step 1, open the cover plate of tank 15; Step 2 is injected hydraulic oil from hydraulic fluid port A, and main piston rod 11 is fallen back on master cylinder 13 bottoms, and connecting rod 12 is withdrawn in the tank 15; Step 3 is pulled down connecting rod 12; Step 4 is injected hydraulic oil from hydraulic fluid port B, drives main piston rod 11, and main piston rod 11 is contacted with concrete piston 10, and main piston rod 11 and concrete piston 10 are fixed together; Step 5 is injected hydraulic oil from hydraulic fluid port A, drives main piston rod 11, makes main piston rod 11 fall back on master cylinder 13 bottoms, and concrete piston 10 is withdrawn in the tank 15; Step 6 is pulled down concrete piston 10 from main piston rod 11, take out concrete piston 10.After concrete piston 10 is disassembled, concrete piston 10 is keeped in repair, and after concrete piston 10 maintenance finishes,, reinstall concrete piston 10 according to the step opposite with above-mentioned dismounting concrete piston 10.
The inventor finds that in the available coagulation soil transfer pump, when needing repairing the concrete piston, the step of concrete piston dismounting is more in realizing process of the present invention, the unloading process complexity, and it is longer to expend time in, and dismounting labor intensity height; Simultaneously, if dismantle the concrete piston in work progress, in the unloading process of long period, concrete easily solidifies and stops up conveyance conduit, influences the construction effect of concrete transfer pump.
Summary of the invention
The invention provides a kind of concrete transfer pump, can reduce the complexity of concrete piston dismounting, reduce the take-down time, improve the construction effect of concrete transfer pump.
The embodiment of the invention provides a kind of concrete transfer pump, comprising: master cylinder and concrete cylinder, and be arranged on water tank between described master cylinder and the concrete cylinder; Be provided with main piston in the described master cylinder, described main piston is connected with concrete piston in being arranged on described concrete cylinder by main piston rod, and the effect of the hydraulic oil of described main piston in described master cylinder drives described concrete reciprocating motion of the pistons;
The end of described master cylinder also is provided with multi-stage oil cylinder, and described multi-stage oil cylinder is by against the mode of described main piston, and the movement travel of described main piston is limited; And, make the movement travel of described main piston between working stroke and dismounting stroke, switch by the stretching out or withdraw of described multi-stage oil cylinder;
Wherein, described working stroke is meant that described main piston drives described concrete piston and pushes the needed stroke of concrete; Described dismounting stroke is meant that described main piston drives described concrete piston and falls back on needed stroke in the described water tank.
In the above-mentioned concrete transfer pump, described working stroke and the length of the difference of dismantling stroke more than or equal to described concrete piston.Described multi-stage oil cylinder can be 2 grades of oil cylinders, and described 2 grades of oil cylinders specifically can comprise: body oil cylinder and stretch out oil cylinder, and described body oil cylinder is fastened in the opening of described master cylinder end; The described oil cylinder that stretches out is slidingly installed in the described body oil cylinder, and described stretching out is slidingly equipped with auxiliary piston rod in the oil cylinder; Described body oil cylinder is provided with first filler opening, and the described oil cylinder that stretches out is provided with second filler opening, described body oil cylinder and stretch out oil cylinder and be communicated with by described two filler openings; After injecting hydraulic oil in the described body oil cylinder, describedly stretch out oil cylinder and auxiliary piston rod stretches out under the effect of the pressure of hydraulic oil, by the described auxiliary piston rod after stretching out described main piston is limited in the described working stroke and moves;
In the described body oil cylinder after the hydraulic oil pressure release, describedly stretch out oil cylinder and auxiliary piston rod is withdrawn under the effect of the Driving force of described main piston, described main piston is moved in described dismounting stroke by the described auxiliary piston rod after the withdrawal.
In addition, described multi-stage oil cylinder is connected with hydraulic control device, is used to control the injection or the pressure release of hydraulic oil in the described multi-stage oil cylinder.Described hydraulic control device specifically can comprise: with the Pilot operated check valve that the hydraulic fluid port of described multi-stage oil cylinder is communicated with, described Pilot operated check valve is connected on the oil sources by the electric-controlled hydraulic selector valve; Described Pilot operated check valve is under the control of described electric-controlled hydraulic selector valve, and the hydraulic oil that the oil pump of oil sources is sent into injects in the described multi-stage oil cylinder, and the hydraulic oil in the described multi-stage oil cylinder is carried out pressure release.And described electric-controlled hydraulic selector valve is 25 energising control hydraulic multitandem valves, is used to control the conducting forward or backwards of described Pilot operated check valve.
The two ends of described master cylinder are respectively arranged with first filler opening and second filler opening, described first filler opening and second filler opening are connected with oil pump respectively, under the effect of the hydraulic oil that described first filler opening and second filler opening inject, the to-and-fro motion in described master cylinder of described main piston;
In the above-mentioned concrete transfer pump, on the described master cylinder, both sides in first rest position of described main piston can offer first hydraulic fluid port and second hydraulic fluid port, and be connected with first one-way valve between described first hydraulic fluid port and second hydraulic fluid port, be used in described master piston motion during, make the pressure of hydraulic oil of described main piston both sides identical to described first rest position; Wherein, described first rest position is in the described main piston to-and-fro motion process, in described master cylinder away from the rest position at described multi-stage oil cylinder one end place.
On the described master cylinder, also can offer the 3rd hydraulic fluid port and the 4th hydraulic fluid port in second rest position of described main piston and the both sides of the 3rd rest position, and be connected with second one-way valve between described the 3rd hydraulic fluid port and the 4th hydraulic fluid port, be used in described master piston motion during, make the pressure of hydraulic oil of described main piston both sides identical to described second rest position and the 3rd rest position; Described second one-way valve also is connected with stop valve, so that in described multi-stage oil cylinder withdrawal process, closes described stop valve and makes described main piston promote described multi-stage oil cylinder withdrawal; Wherein, described second rest position is a described main piston when moving in described working stroke, in described master cylinder near the rest position at described multi-stage oil cylinder one end place; Described the 3rd rest position is a described main piston when moving in described dismounting stroke, in described master cylinder near the rest position at described multi-stage oil cylinder one end place.
Further, the front end of described master cylinder is provided with postive stop baffle, and the shape of described postive stop baffle is identical with the shape of described main piston, and described postive stop baffle offers through hole, so that make the hydraulic fluid pressure of described postive stop baffle both sides identical.
Embodiment of the invention concrete transfer pump is by being provided with multi-stage oil cylinder, can adjust the movement travel of main piston in master cylinder, when the main piston proper functioning, the length that can utilize multi-stage oil cylinder to stretch out, main piston is limited in its working stroke, carries out concrete propelling movement normally to guarantee the concrete piston; When needs dismounting concrete piston keeps in repair, multi-stage oil cylinder can be withdrawn, to increase the movement travel of main piston in master cylinder, the concrete piston is withdrawn into water tank in the concrete cylinder, realization is to the dismounting of concrete piston, the unloading process of concrete piston is simple, and the take-down time is short, can effectively guarantee the construction effect of concrete transfer pump; Simultaneously, by adopting multi-stage oil cylinder the movement travel of main piston is adjusted, made the concrete transfer pump compact overall structure, volume is little, and it is little to take up room, and can be convenient to the integral arrangement and the maintenance of concrete transfer pump.
Description of drawings
Fig. 1 is the structural representation of existing concrete transfer pump;
Fig. 2 is concrete transfer pump embodiment's one of the present invention structural representation;
Fig. 3 is the structural representation of concrete transfer pump embodiment of the present invention when the concrete piston is dismantled;
Fig. 4 is concrete transfer pump embodiment's two of the present invention structural representation;
Fig. 5 is concrete transfer pump embodiment's three of the present invention structural representation;
Fig. 6 is concrete transfer pump embodiment's four of the present invention structural representation.
Reference character:
10-concrete piston; The 11-main piston rod; The 12-connecting rod; The 13-master cylinder;
14-concrete cylinder; The 15-tank; 221-concrete piston; 22-concrete cylinder;
The 23-water tank; The 211-main piston; The 26-oil sources; The 24-multi-stage oil cylinder;
The 21-master cylinder; 243-body oil cylinder; The 261-oil pump; The 216-stop valve;
The 262-fuel tank; The 244-postive stop baffle; 27-4 level oil cylinder; 271-first oil cylinder;
The 251-Pilot operated check valve; 242-stretches out oil cylinder;
215-second one-way valve; The 241-auxiliary piston rod;
252-electric-controlled hydraulic selector valve; 2121-first rest position;
213-first one-way valve; 2142-the 3rd rest position;
2141-second rest position; 272-second oil cylinder;
273-the 3rd oil cylinder; 274-the 4th oil cylinder;
The 25-hydraulic control device.
Embodiment
For the purpose, technological scheme and the advantage that make the embodiment of the invention clearer, below in conjunction with the accompanying drawing in the embodiment of the invention, technological scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, rather than whole embodiments.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment who is obtained under the creative work prerequisite.
The defective that exists when dismantling at concrete piston in the existing concrete transfer pump, the embodiment of the invention provides a kind of concrete transfer pump, increase multi-stage oil cylinder by end at the master cylinder of existing concrete transfer pump, utilize multi-stage oil cylinder to adjust the movement travel of main piston in the master cylinder, when the concrete transfer pump proper functioning, multi-stage oil cylinder can be stretched out, make master piston motion in working stroke, drive the to-and-fro motion in the concrete cylinder of concrete piston; When needs dismounting concrete piston keeps in repair, can make the multi-stage oil cylinder withdrawal, increase the movement travel of main piston, make master piston motion in the dismounting stroke, make main piston the concrete piston can be fallen back in the water tank, the concrete piston is dismantled and keeped in repair, and the unloading process of concrete piston is simple, and the take-down time is short, simultaneously, adopt multi-stage oil cylinder can make the compact overall structure of concrete transfer pump, volume is little, and it is little to take up room.
Fig. 2 is concrete transfer pump embodiment's one of the present invention structural representation. as shown in Figure 2, the present embodiment concrete transfer pump comprises: and master cylinder 21 and concrete cylinder 22, and be arranged on water tank 23 between master cylinder 21 and the concrete cylinder 22; Be provided with main piston 211 in the master cylinder 21, this main piston 211 is connected with concrete piston 221 in being arranged on concrete cylinder 22 by main piston rod, this main piston 211 can drive 221 to-and-fro motion of concrete piston in the effect of the hydraulic oil in the master cylinder 21, so that utilize the to-and-fro motion of concrete piston 221 that concrete is pressed into conveyance conduit, realize concrete propelling movement; In addition, the end of this master cylinder 21 also is provided with multi-stage oil cylinder 24, and this multi-stage oil cylinder 24 can be by against the mode of main piston 211, and the movement travel of main piston 211 is limited; And, make the movement travel of main piston 211 between working stroke and dismounting stroke, switch by the stretching out or withdraw of multi-stage oil cylinder 24; Wherein, working stroke is meant that main piston 211 drives concrete piston 221 and pushes the needed stroke of concrete; The dismounting stroke is meant that main piston 211 drives concrete piston 221 and falls back on needed stroke in the water tank 23.
Particularly, when the concrete transfer pump proper functioning, can be by in multi-stage oil cylinder 24, injecting hydraulic oil, multi-stage oil cylinder 24 is stretched out under the effect of the pressure of hydraulic oil, make and the movement travel of the multi-stage oil cylinder 24 restriction main pistons 211 after stretching out make main piston 211 in working stroke, to move back and forth, to guarantee in the concrete transfer pump working procedure, concrete piston 221 to-and-fro motion in concrete cylinder 22 always satisfies pushing concrete needs; When needs dismounting concrete piston 221, when concrete piston 221 is repaired or replaced, can carry out pressure release to multi-stage oil cylinder 24, multi-stage oil cylinder 24 after the pressure release can be withdrawn under the effect of main piston 211, make the movement travel of main piston 211 in master cylinder 21 increase, thereby concrete piston 221 can be withdrawn in the water tank 23 in concrete cylinder 22, concrete piston 221 is pulled down from main piston rod.As can be seen, present embodiment is by being provided with multi-stage oil cylinder, can regulate the movement travel of main piston rod easily, when dismounting concrete piston, as long as, can easily the concrete piston be fallen back in the water tank with the multi-stage oil cylinder withdrawal, dismounting with respect to prior art concrete piston, the unloading process of concrete piston is simple in the present embodiment, and the take-down time is short, can effectively improve the removal efficiency of concrete piston.
In the present embodiment, for making the compact structure of concrete transfer pump, volume is little, particularly, as shown in Figure 2, the multi-stage oil cylinder 24 in the present embodiment is 2 grades of oil cylinders, comprises and stretches out oil cylinder 242 and body oil cylinder 243, wherein, body oil cylinder 243 is fastened in the opening of master cylinder 21 ends, and sealing is provided with; Stretch out oil cylinder 242 and be slidingly installed in the body oil cylinder 243, and stretch out and be slidingly equipped with auxiliary piston rod 241 in the oil cylinder 242; Can be provided with first filler opening on the body oil cylinder 243, be used for injecting hydraulic oil in this multi-stage oil cylinder, stretch out oil cylinder 242 and be provided with into second hydraulic fluid port, stretch out oil cylinder 242 and be communicated with body oil cylinder 243 by second filler opening on it from this first filler opening; When by first filler opening injects hydraulic oil in body oil cylinder 243 after, stretch out oil cylinder 242 and auxiliary piston rod 241 and can under the effect of the pressure of hydraulic oil, stretch out, by the auxiliary piston rod after stretching out 241 main piston 211 is limited in the working stroke and moves; After the hydraulic oil pressure release in the body oil cylinder 243, stretch out oil cylinder 242 and auxiliary piston rod 241 and can under the Driving force effect of main piston 211, withdraw, by the auxiliary piston rod 241 after the withdrawal main piston rod is moved in the dismounting stroke.As can be seen, multi-stage oil cylinder can be stretched out by the hydraulic oil that in multi-stage oil cylinder, injects certain pressure in the present embodiment, with with main piston rod motion in working stroke, work normally, and when needing repairing the concrete piston, can be with the multi-stage oil cylinder pressure release, and under the promotion of main piston rod, withdraw, increase the movement travel of main piston rod, it can be moved in the dismounting stroke, the concrete piston is fallen back in the water tank, the concrete piston is dismantled.
In the present embodiment, described working stroke should be more than or equal to the length of concrete piston 221, so that when main piston moves in the dismounting stroke, can effectively the concrete piston be withdrawn in the water tank with the difference of dismounting stroke.Particularly, as shown in Figure 2, the length summation that the length that multi-stage oil cylinder 24 stretches out in this enforcement is auxiliary piston rod 241 and stretches out oil cylinder 242, and working stroke promptly is the distance between master cylinder 21 left ends and the auxiliary piston rod 241, after the dismounting stroke is auxiliary piston rod 241 withdrawals, the distance of whole master cylinder 21 inner chambers.
In the present embodiment, multi-stage oil cylinder 24 can be connected with hydraulic control device 25, be used to control the injection and the pressure release of hydraulic oil in the multi-stage oil cylinder 24, make multi-stage oil cylinder 24 under the control action of hydraulic control device 25, to stretch out or to withdraw. particularly, as shown in Figure 2, hydraulic control device 25 can comprise the Pilot operated check valve 251 that is communicated with the hydraulic fluid port of multi-stage oil cylinder 24, Pilot operated check valve 251 can be connected on the oil sources 26 by electric-controlled hydraulic selector valve 252, Pilot operated check valve 251 can be under the control of electric-controlled hydraulic selector valve 252, the hydraulic oil that the oil pump 261 of oil sources 26 is sent into injects in the multi-stage oil cylinder 24, so that multi-stage oil cylinder 24 is stretched out, or to the pressure release of carrying out of multi-stage oil cylinder 24, so that under the thrust of main piston 211, make multi-stage oil cylinder 24 withdrawals, wherein, electric-controlled hydraulic selector valve 252 may command Pilot operated check valves 251 the opening direction of conducting forward or backwards, so that in multi-stage oil cylinder 24, inject hydraulic oil by Pilot operated check valve 251, and the hydraulic oil in the multi-stage oil cylinder 24 are released. simultaneously, in the present embodiment, electric-controlled hydraulic selector valve 252 specifically can be 25 logical electric-controlled hydraulic multi-way valve, when oil circuit is commutated, the also conducting forward or backwards of may command Pilot operated check valve 251, simultaneously, also can effectively guarantee to let out decompression in the electric-controlled hydraulic selector valve, guarantee the pressure of hydraulic oil in the multi-stage oil cylinder 24.
For the present invention is had a better understanding, the concrete application to the embodiment of the invention describes below.
The present embodiment concrete transfer pump can be used for concrete transmission, as shown in Figure 2, when the concrete transfer pump proper functioning, when transmitting concrete, can utilize electric-controlled hydraulic selector valve 252 dead electricity, make Pilot operated check valve 251 forward conductions, the hydraulic oil that the oil pump 261 of oil sources 26 is sent into is injected in the multi-stage oil cylinder 24, make multi-stage oil cylinder 24 under the effect of the pressure of the hydraulic oil that injects, stretch out, the auxiliary piston rod 241 that utilization is stretched out is limited in the position that auxiliary piston rod 241 stretches out with the movement travel of main piston 211 in master cylinder 21, make main piston 211 in working stroke, to move, drive 221 to-and-fro motion in concrete cylinder 22 of concrete piston, realize concrete propelling movement.
Fig. 3 is the structural representation of concrete transfer pump embodiment of the present invention when the concrete piston is dismantled.When 221 damages of concrete piston need repairing, as shown in Figure 3, can utilize electric-controlled hydraulic selector valve 252 to power on, carry out the oil circuit commutation, and control Pilot operated check valve 251 reverse openings, hydraulic oil in the multi-stage oil cylinder 24 directly is communicated with the fuel tank 262 of oil sources 26, make multi-stage oil cylinder 24 under the promotion of main piston 211, to withdraw, thereby increase the movement travel of main piston 211 in master cylinder 21, concrete piston 221 can be withdrawn in the water tank 23 in concrete cylinder 22, in water tank 23, concrete piston 221 is pulled down from main piston 211, repaired or replaced.After maintenance finishes, concrete piston 221 can be reinstalled on the main piston 211, simultaneously, can utilize electric-controlled hydraulic selector valve 252 dead electricity, Pilot operated check valve 251 forward conductions, the hydraulic oil that makes oil pump 261 send into can be injected in the multi-stage oil cylinder 24 by Pilot operated check valve 251, and multi-stage oil cylinder 24 is stretched out, and the movement travel with main piston 211 is limited in its working stroke again.
In summary it can be seen, the embodiment of the invention is by being provided with multi-stage oil cylinder, can adjust the movement travel of main piston in master cylinder, when the concrete transfer pump proper functioning, the length that can utilize multi-stage oil cylinder to stretch out, main piston is limited in its working stroke, carries out concrete propelling movement normally to guarantee the concrete piston; When needs dismounting concrete piston keeps in repair, multi-stage oil cylinder can be withdrawn, to increase the movement travel of main piston in master cylinder, the concrete piston is withdrawn into water tank in the concrete cylinder, realization is to the dismounting of concrete piston, the unloading process of concrete piston is simple, and the take-down time is short, can effectively guarantee the construction effect of concrete transfer pump; Simultaneously, by adopting multi-stage oil cylinder the movement travel of main piston is adjusted, made the concrete transfer pump compact overall structure, volume is little, and it is little to take up room, and can be convenient to the integral arrangement and the maintenance of concrete transfer pump.
Fig. 4 is concrete transfer pump embodiment's two of the present invention structural representation. in this enforcement, the two ends of master cylinder 21 are respectively arranged with the first filler opening A and the second filler opening B, the first filler opening A and the second filler opening B are connected with oil pump respectively, under the effect of the hydraulic oil that the first filler opening A and the second filler opening B inject, main piston 211 can to-and-fro motion in master cylinder 21; In addition, for slowing down the impact force to master cylinder 21 of main piston 211 when master cylinder 21 moves to rest position, minimizing is to the impact of master cylinder 21, on the master cylinder 21 of present embodiment, both sides in first rest position 2121 of main piston 211 offer first hydraulic fluid port and second hydraulic fluid port, and be connected with first one-way valve 213 between first hydraulic fluid port and second hydraulic fluid port, be used for when main piston 211 moves to this first rest position 2121, make the pressure of hydraulic oil of main piston 211 both sides identical; Wherein, first rest position 2121 is in the main piston 211 to-and-fro motion processes, in master cylinder 21 away from the rest position at multi-stage oil cylinder 24 1 end places. like this, when main piston 211 moves to this first rest position 2121, because the hydraulic fluid pressure of main piston 211 right-hand members is greater than left end, therefore, the hydraulic oil of main piston 211 right-hand members can flow into left end, make that the hydraulic fluid pressure at main piston 211 two ends is identical, this moment, main piston did not stress, and therefore, can effectively reduce main piston 211 in the impact of rest position to master cylinder 21, stability and reliability when improving the operation of whole concrete transfer pump, the working life of improving concrete transfer pump.
Further, as shown in Figure 4, on master cylinder 21, offer the 3rd hydraulic fluid port and the 4th hydraulic fluid port in second rest position 2141 of main piston 211 and the both sides of the 3rd rest position 2142, and be connected with second one-way valve 215 between the 3rd hydraulic fluid port and the 4th hydraulic fluid port, be used for when main piston 211 moves to second rest position 2141 and the 3rd rest position 2142, make the pressure of hydraulic oil of main piston 211 both sides identical; In addition, second one-way valve 215 also is connected with stop valve 216, so that in multi-stage oil cylinder 24 withdrawal processes, closes stop valve 216 and makes main piston 211 promote multi-stage oil cylinder 24 withdrawals; Wherein, when second rest position 2141 is moved in working stroke for main piston 211, the rest position at close multi-stage oil cylinder 24 1 end places in master cylinder 21; When the 3rd rest position 2142 is moved in the dismounting stroke for main piston 211, the rest position at close multi-stage oil cylinder 24 1 end places in master cylinder 24.
When the concrete transfer pump proper functioning, stop valve 216 can be opened, when main piston 211 moves to second rest position 2141, the hydraulic oil that main piston 211 left end pressure are bigger can enter right-hand member from second one-way valve 215, make that the hydraulic fluid pressure of main piston 211 left ends and right-hand member is identical, thereby main piston 211 is played buffer function in the motion of second rest position 2141, avoid master cylinder 21 is caused bigger impact; When concrete transfer pump needs to safeguard, dismounting concrete piston 221, during with multi-stage oil cylinder 24 withdrawals, stop valve 216 can be closed, at this moment, second one-way valve 215 is inoperative, main piston 211 can promote multi-stage oil cylinder 24 withdrawals under the effect of the hydraulic oil of the big pressure of its left end, as can be seen, and can be when the withdrawal multi-stage oil cylinder by stop valve 216 is set, close the path on second one-way valve 215, make main piston 211 effectively multi-stage oil cylinder to be compressed.
As can be seen, when stating the effect of the embodiment of the invention one technological scheme in realization, in the present embodiment by one-way valve is set, can effectively avoid in the master piston motion process impact to master cylinder, improve the stability and the reliability of concrete transfer pump operation, improve the working life of concrete transfer pump.
Fig. 5 is concrete transfer pump embodiment's three of the present invention structural representation.On the basis of above-mentioned Fig. 2 or technological scheme embodiment illustrated in fig. 4, as shown in Figure 5, the front end of multi-stage oil cylinder 24 also can be provided with postive stop baffle 244 in the present embodiment, the shape of this postive stop baffle 244 is identical with the shape of the piston of main piston 211, and offer through hole on the postive stop baffle 244, so that the pressure of hydraulic oil is identical in the space that main piston 211 and master cylinder 21 forms, like this when main piston 211 moves to the end, main piston 211 directly contacts with postive stop baffle 244, area of contact is bigger, improve stability and the reliability of main piston 211 when proper functioning further, the stability when improving the concrete transfer pump operation.
Fig. 6 is concrete transfer pump embodiment's four of the present invention structural representation.Different with above-mentioned Fig. 1,4 or 5 illustrated embodiment technological schemes is, in the present embodiment, described multi-stage oil cylinder is 4 grades of oil cylinders 27, comprise first oil cylinder 271, second oil cylinder 272, the 3rd oil cylinder 273 and the 4th oil cylinder 274, as can be seen, the total length that these 4 grades of oil cylinders 27 stretch out is first oil cylinder 271, second oil cylinder 272 and the 3rd oil cylinder 273 sums, length after the withdrawal is the length of the 4th oil cylinder 274, make that the structure of multi-stage oil cylinder is compact more, volume also can be littler, be convenient to the installation of multi-stage oil cylinder, reduce the volume of whole concrete transfer pump.In addition, the multi-stage oil cylinder described in the present embodiment also can be 3 grades, the 5 grades multi-stage oil cylinders that reach greater than 5 grades, particularly, the multi-stage oil cylinder of suitable number of stages can be set according to the actual needs.
It should be noted that at last: above embodiment only in order to technological scheme of the present invention to be described, is not intended to limit; Although with reference to previous embodiment the present invention is had been described in detail, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technological scheme that aforementioned each embodiment put down in writing, and perhaps part technical characteristics wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the spirit and scope of various embodiments of the present invention technological scheme.
Claims (9)
1. a concrete transfer pump is characterized in that, comprising:
Master cylinder and concrete cylinder, and be arranged on water tank between described master cylinder and the concrete cylinder; Be provided with main piston in the described master cylinder, described main piston is connected with concrete piston in being arranged on described concrete cylinder by main piston rod, and the effect of the hydraulic oil of described main piston in described master cylinder drives described concrete reciprocating motion of the pistons;
The end of described master cylinder also is provided with multi-stage oil cylinder, and described multi-stage oil cylinder is by against the mode of described main piston, and the movement travel of described main piston is limited; And, make the movement travel of described main piston between working stroke and dismounting stroke, switch by the stretching out or withdraw of described multi-stage oil cylinder;
Wherein, described working stroke is meant that described main piston drives described concrete piston and pushes the needed stroke of concrete; Described dismounting stroke is meant that described main piston drives described concrete piston and falls back on needed stroke in the described water tank.
2. concrete transfer pump according to claim 1 is characterized in that, described working stroke and the length of the difference of dismantling stroke more than or equal to described concrete piston.
3. concrete transfer pump according to claim 1 is characterized in that, described multi-stage oil cylinder is 2 grades of oil cylinders, and described 2 grades of oil cylinders comprise: body oil cylinder and stretch out oil cylinder, and described body oil cylinder is fastened in the opening of described master cylinder end; The described oil cylinder that stretches out is slidingly installed in the described body oil cylinder, and described stretching out is slidingly equipped with auxiliary piston rod in the oil cylinder; Described body oil cylinder is provided with first filler opening, and the described oil cylinder that stretches out is provided with second filler opening, and described body oil cylinder is communicated with by described second filler opening and the described oil cylinder that stretches out; After injecting hydraulic oil in the described body oil cylinder, describedly stretch out oil cylinder and auxiliary piston rod stretches out under the effect of the pressure of hydraulic oil, by the described auxiliary piston rod after stretching out described main piston is limited in the described working stroke and moves;
In the described body oil cylinder after the hydraulic oil pressure release, describedly stretch out oil cylinder and auxiliary piston rod is withdrawn under the effect of the Driving force of described main piston, described main piston is moved in described dismounting stroke by the described auxiliary piston rod after the withdrawal.
4. according to the arbitrary described concrete transfer pump of claim 1～3, it is characterized in that described multi-stage oil cylinder is connected with hydraulic control device, be used to control the injection or the pressure release of hydraulic oil in the described multi-stage oil cylinder.
5. concrete transfer pump according to claim 4 is characterized in that, described hydraulic control device comprises: with the Pilot operated check valve that the filler opening of described multi-stage oil cylinder is communicated with, described Pilot operated check valve is connected on the oil sources by the electric-controlled hydraulic selector valve; Described Pilot operated check valve is under the control of described electric-controlled hydraulic selector valve, and the hydraulic oil that the oil pump of oil sources is sent into injects in the described multi-stage oil cylinder, and the hydraulic oil in the described multi-stage oil cylinder is carried out pressure release.
6. concrete transfer pump according to claim 5 is characterized in that, described electric-controlled hydraulic selector valve is 25 energising control hydraulic multitandem valves, is used to control the conducting forward or backwards of described Pilot operated check valve.
7. concrete transfer pump according to claim 1, it is characterized in that, the two ends of described master cylinder are respectively arranged with first filler opening and second filler opening, described first filler opening and second filler opening are connected with oil pump respectively, under the effect of the hydraulic oil that described first filler opening and second filler opening inject, the to-and-fro motion in described master cylinder of described main piston;
On the described master cylinder, both sides in first rest position of described main piston offer first hydraulic fluid port and second hydraulic fluid port, and be connected with first one-way valve between described first hydraulic fluid port and second hydraulic fluid port, be used in described master piston motion during, make the pressure of hydraulic oil of described main piston both sides identical to described first rest position;
Wherein, described first rest position is in the described main piston to-and-fro motion process, in described master cylinder away from the rest position at described multi-stage oil cylinder one end place.
8. according to claim 1 or 7 described concrete transfer pumps, it is characterized in that, on the described master cylinder, offer the 3rd hydraulic fluid port and the 4th hydraulic fluid port in second rest position of described main piston and the both sides of the 3rd rest position, and be connected with second one-way valve between described the 3rd hydraulic fluid port and the 4th hydraulic fluid port, be used in described master piston motion during, make the pressure of hydraulic oil of described main piston both sides identical to described second rest position and the 3rd rest position;
Described second one-way valve also is connected with stop valve, so that in described multi-stage oil cylinder withdrawal process, closes described stop valve and makes described main piston promote described multi-stage oil cylinder withdrawal;
Wherein, described second rest position is a described main piston when moving in described working stroke, in described master cylinder near the rest position at described multi-stage oil cylinder one end place; Described the 3rd rest position is a described main piston when moving in described dismounting stroke, in described master cylinder near the rest position at described multi-stage oil cylinder one end place.
9. concrete transfer pump according to claim 1, it is characterized in that, the front end of described master cylinder is provided with postive stop baffle, the shape of described postive stop baffle is identical with the shape of described main piston, and described postive stop baffle offers through hole, so that make the hydraulic fluid pressure of described postive stop baffle both sides identical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910238369A CN101705928A (en) | 2009-12-01 | 2009-12-01 | Concrete transfer pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910238369A CN101705928A (en) | 2009-12-01 | 2009-12-01 | Concrete transfer pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101705928A true CN101705928A (en) | 2010-05-12 |
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ID=42376174
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910238369A Pending CN101705928A (en) | 2009-12-01 | 2009-12-01 | Concrete transfer pump |
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| Country | Link |
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| CN (1) | CN101705928A (en) |
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| WO2011113241A1 (en) * | 2010-03-16 | 2011-09-22 | 湖南三一智能控制设备有限公司 | Concrete pumping structure |
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| CN102852753A (en) * | 2012-09-21 | 2013-01-02 | 淮南矿业(集团)有限责任公司 | Hydraulic grouting pump |
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| CN102978675B (en) * | 2012-12-03 | 2015-06-24 | 中联重科股份有限公司 | Concrete conveying cylinder, manufacturing method thereof and pumping equipment comprising concrete conveying cylinder |
| CN104214068A (en) * | 2014-08-26 | 2014-12-17 | 成都迅德科技有限公司 | Concrete pump |
| CN104214068B (en) * | 2014-08-26 | 2016-03-02 | 温州弘大市政园林建设有限公司 | concrete pump |
| CN105508329B (en) * | 2014-09-23 | 2017-08-25 | 中联重科股份有限公司 | Pumping hydraulic control system and concrete pumping equipment |
| CN105508329A (en) * | 2014-09-23 | 2016-04-20 | 中联重科股份有限公司 | Pumping hydraulic control system and concrete pumping equipment |
| CN106351815A (en) * | 2016-10-21 | 2017-01-25 | 北汽福田汽车股份有限公司 | Pump car and telescopic pumping system thereof |
| CN106351815B (en) * | 2016-10-21 | 2019-06-11 | 北汽福田汽车股份有限公司 | A kind of pump truck and its telescopic pumping system |
| CN107701419A (en) * | 2017-08-23 | 2018-02-16 | 四川达灿石油设备有限公司 | A kind of device for pressure break exploitation |
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| CN114962202A (en) * | 2021-08-14 | 2022-08-30 | 深圳市东深环保科技有限公司 | Double-cylinder grouting pump |
| CN114320815A (en) * | 2021-12-17 | 2022-04-12 | 镇江长城注浆设备有限公司 | Full-hydraulic-control grouting pump capable of grouting viscous granular materials |
| CN114320815B (en) * | 2021-12-17 | 2024-01-02 | 镇江长城注浆设备有限公司 | Grouting pump capable of fully hydraulically controlling grouting of viscous granular material |
| CN114453723A (en) * | 2022-03-11 | 2022-05-10 | 哈尔滨焊接研究院有限公司 | Upsetting cylinder and friction welding machine |
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Open date: 20100512 |