CN203248446U - Concrete pump hydraulic cylinder with automatic oil replenishing and limiting achievable - Google Patents
Concrete pump hydraulic cylinder with automatic oil replenishing and limiting achievable Download PDFInfo
- Publication number
- CN203248446U CN203248446U CN 201320189467 CN201320189467U CN203248446U CN 203248446 U CN203248446 U CN 203248446U CN 201320189467 CN201320189467 CN 201320189467 CN 201320189467 U CN201320189467 U CN 201320189467U CN 203248446 U CN203248446 U CN 203248446U
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- Prior art keywords
- oil
- hydraulic cylinder
- concrete pump
- piston
- cylinder
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Bridges Or Land Bridges (AREA)
- Reciprocating Pumps (AREA)
Abstract
The utility model discloses a concrete pump hydraulic cylinder with automatic oil replenishing and limiting achievable. The concrete pump hydraulic cylinder with automatic oil replenishing and limiting achievable comprises a hydraulic oil cylinder and a piston, wherein a through hole is machined in the piston in the direction parallel to the axis of the piston, two one-way valves are symmetrically installed in the through hole, the valve head of one of the one-way valve faces an oil inlet cavity, the valve head of the other one-way valve faces an oil returning cavity, and a connecting spring is arranged between the two one-way valves. The concrete pump hydraulic cylinder with automatic oil replenishing and limiting achievable has the advantages that the automatic oil replenishing function and the automatic limiting function are achieved, and the phenomenon that parts, such as an end cover, a guiding sleeve and a buffering part, of the oil cylinder are squeezed and impacted is avoided.
Description
Technical field
The utility model relates to concrete pump, relates in particular to the hydraulic driven concrete pump.
Background technique
Existing hydraulic driven concrete pump is called for short concrete pump.This pump is comprised of hopper, oil hydraulic cylinder (comprising oil cylinder and piston), concrete cylinder, distributing valve, Y-tube, flushing device, hydraulic system and power system etc.Hydraulic system is by the to-and-fro motion of pressure pushing piston.Suction when moving behind the piston is pressed into delivery pipe through Y-tube with the concrete in the concrete cylinder during front pushing away.Wherein, oil hydraulic cylinder is comprised of two covers.In use have following problem: oil cylinder piston moves to the position, stroke end and when not commutating, can produce pinch shock to positions such as hydraulic jack end cap, guide sleeve, bufferings.Especially the recharging oil device of oil cylinder is all outside at oil cylinder, carries out repairing by artificial intermittent operation.Outside oil cylinder recharging oil device often damages because of the collision of outside.In concrete pump when normal operation,, owing to letting out in the oil cylinder, the hydraulic oil in two oil cylinder UNICOM chambeies will gradually reduce, and make two oil cylinders can not arrive the stroke end, thereby increase the commutation number of times, reduce pumping efficiency, the working life of minimizing concrete pump.
The model utility content
For addressing the above problem, the utility model provides a kind of automatic repairing and spacing concrete pump oil hydraulic cylinder, realizes automatic repairing and spacing function, avoids the positions such as end cap, guide sleeve, buffering to oil cylinder to produce the pinch shock phenomenon.
For achieving the above object, the technological scheme that adopts of the utility model is as follows:
A kind of automatic repairing and spacing concrete pump oil hydraulic cylinder, it comprises hydraulic jack and piston, it is characterized in that, direction parallel with axis on piston is processed with through hole, two one-way valves of symmetrical installation in the through hole, the valve head of two one-way valves is provided with the connection spring respectively towards oil suction chamber side and oil back chamber side between two one-way valves.
Working principle and good effect are, when the piston movement of an oil hydraulic cylinder during to terminal point, the one-way valve of oil cylinder oil back chamber side is backed down, the one-way valve of oil suction chamber side is opened under the effect of pressure oil all the time, this moment, oil suction chamber and the oil back chamber of oil cylinder consisted of passage, two chambeies of this oil cylinder are on state, flow to the oil back chamber of another oil hydraulic cylinder through the cross over pipe of the passage on the piston and former oil hydraulic cylinder from the high pressure oil of oil pump, the internal drainage of another oil hydraulic cylinder is replenished, the each other repairing that is in operation of such two oil hydraulic cylinders, remedy hydraulic oil and reveal the impact that causes, make two oil cylinders can both arrive stroke terminal all the time; Or high pressure oil avoids the positions such as end cap, guide sleeve, buffering to oil cylinder to produce pinch shock by the direct oil return of the one-way valve on the piston.
By mutually automatically repairing, can save the recharging oil device of oil cylinder, do not rely on and manually carry out repairing.
For making clearer, clear and definite the utility model technology contents of understanding, below in conjunction with accompanying drawing the utility model is further described.
Description of drawings
Fig. 1 is the utility model embodiment's structural representation; There is shown the two cover oil hydraulic cylinders state that uses in parallel.
Among the figure: the 1-hydraulic jack, the 2-piston, the one-way valve of 3a-oil suction chamber side, the one-way valve of 3b-oil back chamber side, 4-connects spring, 5-cross over pipe, 6-oil suction chamber, 7-oil back chamber.
Embodiment
Automatic repairing as shown in Figure 1 and spacing concrete pump oil hydraulic cylinder, it comprises hydraulic jack 1 and piston 2, wherein the direction parallel with axis is processed with through hole on piston 2, the symmetrical one-way valve of installing in the through hole, the valve head of one of them one-way valve is towards the oil suction chamber side, the one-way valve 3a that is called the oil suction chamber side, the valve head of another one-way valve are called the one-way valve 3b of oil back chamber side towards the oil back chamber side; Be provided with between the one-way valve 3a of oil suction chamber side and the one-way valve 3b of oil back chamber side and connect spring 4.
When the piston 2 of an oil hydraulic cylinder stretches out when moving to terminal point, the one-way valve 3b of oil cylinder oil back chamber side is backed down, the one-way valve 3a of oil suction chamber side opens under the effect of pressure oil all the time, this moment, oil suction chamber 6 and the oil back chamber 7 of oil cylinder consisted of passage, two chambeies of this oil cylinder are on state, flow to the oil back chamber of another oil hydraulic cylinder from the high pressure oil of oil pump through the cross over pipe 5 of the passage on the piston 2 and former oil hydraulic cylinder, the internal drainage of another oil hydraulic cylinder is replenished.
Claims (1)
1. an automatic repairing and spacing concrete pump oil hydraulic cylinder, it comprises hydraulic jack and piston, it is characterized in that, direction parallel with axis on piston is processed with through hole, be symmetrically installed with two one-way valves in the through hole, the valve head of two one-way valves is provided with the connection spring respectively towards oil suction chamber side and oil back chamber side between two one-way valves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320189467 CN203248446U (en) | 2013-04-15 | 2013-04-15 | Concrete pump hydraulic cylinder with automatic oil replenishing and limiting achievable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320189467 CN203248446U (en) | 2013-04-15 | 2013-04-15 | Concrete pump hydraulic cylinder with automatic oil replenishing and limiting achievable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203248446U true CN203248446U (en) | 2013-10-23 |
Family
ID=49374887
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320189467 Expired - Fee Related CN203248446U (en) | 2013-04-15 | 2013-04-15 | Concrete pump hydraulic cylinder with automatic oil replenishing and limiting achievable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203248446U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111056334A (en) * | 2019-12-31 | 2020-04-24 | 龙合智能装备制造有限公司 | Self-adaptive loading platform for integral loading of container |
-
2013
- 2013-04-15 CN CN 201320189467 patent/CN203248446U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111056334A (en) * | 2019-12-31 | 2020-04-24 | 龙合智能装备制造有限公司 | Self-adaptive loading platform for integral loading of container |
| CN111056334B (en) * | 2019-12-31 | 2021-10-22 | 龙合智能装备制造有限公司 | Self-adaptive loading platform for integral loading of container |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131023 Termination date: 20160415 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |