CN203009268U - Novel conveying cylinder piston limiting mechanism - Google Patents
Novel conveying cylinder piston limiting mechanism Download PDFInfo
- Publication number
- CN203009268U CN203009268U CN 201220568168 CN201220568168U CN203009268U CN 203009268 U CN203009268 U CN 203009268U CN 201220568168 CN201220568168 CN 201220568168 CN 201220568168 U CN201220568168 U CN 201220568168U CN 203009268 U CN203009268 U CN 203009268U
- Authority
- CN
- China
- Prior art keywords
- piston
- cylinder
- main oil
- master cylinder
- oil cylinder
- Prior art date
- 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
Links
Images
Landscapes
- Actuator (AREA)
Abstract
The utility model relates to a novel conveying cylinder piston limiting mechanism which comprises a conveying cylinder, a piton head, a washing chamber, a main oil cylinder, a piston rod, a first piston, a clamp key and a second piston, wherein the washing chamber is connected between the conveying cylinder and the main oil cylinder, the piston rod is installed inside the main oil cylinder, a piston head is installed at one end of the piston rod, the first piston is installed at the other end of the piston rod, and the piston head moves between the conveying cylinder and the washing chamber. The novel conveying cylinder piston limiting mechanism is characterized in that the diameter of one section at the bottom end of the main oil cylinder is designed to be larger than that of the front end of the main oil cylinder, the second piston is placed at the bottom end of the main oil cylinder, the diameter of the second piston is larger than that of the first piston, the first piston is fixed on the piston rod through the clamp key, and a hydraulic oil port is formed on the bottom of the main oil cylinder. A diameter changing structure is designed at the bottom end of the main oil cylinder, pump output of the main oil cylinder in one time is increased under the condition of main oil cylinders with the same length, the structure is simple, examining, repairing and maintenance are convenient, and cost performance of a pump truck is improved.
Description
Technical field
The utility model relates to the field for engineering machinery, is specifically related to a kind of novel piston of conveying cylinder position-limit mechanism.
Background technique
Concrete mixer is that concrete pumping mechanism, distributing arm support and supporting mechanism are integrated on automobile chassis, and collection travels, is pumped to the high-effective concrete conveying engineering machinery of one.Concrete is pumped into needed position under the effect of piston of conveying cylinder.During normal pumping work, piston head is prohibited from entering the washing chamber, with mortar leakage prevention.After pumping is completed, need in time to clean whole delivery pipe and piston head, need to be retracted into piston head in the washing chamber this moment cleans.
At this moment two kinds of solution plans are generally arranged:
One, the inner baffle plate of installing prevents that piston head from entering in the washing chamber.All need again piston head to be moved on in the washing chamber after the dismounting baffle plate and clean but made pump at every turn, time-consuming effort again.So this scheme is eliminated gradually.
Two, at the other end that connects the piston head connecting rod, master cylinder cylinder bottom piston plays the support limit effect at another section of assembling piston.This has just sacrificed certain master cylinder volume.
Generally, longer conveying cylinder and larger conveying cylinder diameter are one of main trend of concrete mixer development, the cylinder body of pumping system is placed on the definite automobile chassis of length, under oil cylinder length same case, can consider that compress the front master cylinder changes piston space as far as possible.How compressing this section space is one of those skilled in the art's technical issues that need to address to obtain more pumpings spaces.
The model utility content
There is the excessive problem of master cylinder bottom headspace in the utility model for prior art, a kind of novel piston of conveying cylinder position-limit mechanism is provided, to have the master cylinder last section now and be transformed into reducer pipe, can be in the situation that the constant axial length that greatly shortens support piston of function, to obtain more space.
The technical solution of the utility model is:
a kind of novel piston of conveying cylinder position-limit mechanism, comprise the conveying cylinder, piston head, the washing chamber, master cylinder, piston rod, piston one, card key, piston two, the washing chamber is connected to and carries between cylinder and master cylinder, piston rod is installed in master cylinder, piston head and piston one are installed respectively in the piston rod two ends, and piston head moves between conveying cylinder and washing chamber, it is characterized in that: the diameter design of one section of master cylinder bottom is larger than master cylinder front end, and place a piston two, and the diameter of piston two is greater than piston one, piston one is fixed on piston rod by card key, the cylinder bottom of master cylinder is provided with hydraulic oil port.
The distance of described master cylinder bottom enlarged diameter section is for when piston two moves to the limit to conveying cylinder direction, and piston head is positioned at carries cylinder.
Piston rod, piston one are blocked by card key and form a Coupled motion.
Because the master cylinder bottom is variable-diameter structure, miner diameter end allows piston one to pass through, and does not allow piston two to pass through, and reaches the purpose of limiting piston two; When piston two and master cylinder miner diameter end are close to, the cylinder bottom hydraulic oil port compressing piston one that hydraulic oil can be by master cylinder enters master cylinder from the master cylinder bottom, to complete pumping; The cylinder bottom of master cylinder is reserved hydraulic oil port, hydraulic oil compressing piston two during pumping, and the limited piston bar is so that the other end piston head of piston rod can not enter the washing chamber.
The utility model has the advantage of: under equal length master cylinder condition, increased pump output of master cylinder, simple in structure, be easy to repair and maintenance, improved the cost performance of pump truck.
Description of drawings
Fig. 1 is the schematic diagram of the utility model piston head when being in the washing chamber.
Fig. 2 is the A place master cylinder bottom enlarged diagram of Fig. 1.
Master cylinder bottom schematic view when Fig. 3 is the normal pumping of the utility model.
The number in the figure explanation
1-carries cylinder, 2-piston head, 3-washing chamber, 4-master cylinder, 5-piston rod, 6-piston one, 7-card key, 8-piston two, 9-cylinder bottom.
Embodiment
as Fig. 1, shown in Figure 2, the utility model comprises carries cylinder 1, piston head 2, washing chamber 3, master cylinder 4, piston rod 5, piston 1, card key 7, piston 28, washing chamber 3 is connected to and carries between cylinder 1 and master cylinder 4, the interior installation piston rod 5 of master cylinder 4, piston head 2 and piston 1 are installed respectively in piston rod 5 two ends, and piston head 2 is being carried motion between cylinder 1 and washing chamber 3, the diameter design of one section of master cylinder 4 bottom is large, and place a piston 28, and the diameter of piston 28 is greater than piston 1, piston 1 is fixed on piston rod 5 by card key 7, the cylinder bottom 9 of master cylinder 4 is provided with hydraulic oil port.
Fig. 1 be piston head 2 in washing chamber 3 in, the location status of piston 1 and piston 28.Piston rod 5, piston 1 form one with card key 7, axially can not move each other.Piston 28 can move around between master cylinder 4 paths and cylinder bottom 9.Card key 7 is together with 28, piston can be separated by hydraulic oil or be squeezed to.Leave hydraulic oil port on cylinder bottom 9.
Because the master cylinder bottom is variable-diameter structure, miner diameter end allows piston 1 to pass through, and does not allow piston 28 to pass through, and reaches the purpose of limiting piston 28; When piston 28 and master cylinder miner diameter end are close to, the cylinder bottom 9 hydraulic oil port compressing pistons 1 that hydraulic oil can be by master cylinder enter master cylinder 4 from master cylinder 4 bottoms, to complete pumping; The cylinder bottom 9 of master cylinder is reserved hydraulic oil port, hydraulic oil compressing piston 28 during pumping, and limited piston bar 5 is so that the other end piston head 2 of piston rod 5 can not enter washing chamber 3.
In pumping when normal operation,, piston head 2 must be positioned at carries cylinder 1 inside, opens cylinder bottom 9 hydraulic oil port of master cylinder 4, at piston 28 with 9 injection liquid force feeds of cylinder bottom and lock.Reach Fig. 3 state this moment, the tight-lipped subsides of path of piston 28 and master cylinder 4, piston head 2 is limited in carrying in cylinder 1.
When needs retreat to washing chamber 3 with piston head 2, unclamp the hydraulic pressure fuel tap between cylinder bottom 9 and piston 28, control oil circuit on master cylinder 4, piston 28 is urged to cylinder bottom 9 gets final product.
Above example is take concrete mixer as example, but this technological scheme needs the engineering machinery of piston limit obviously can be used in other operations the time.The above is only preferred implementation of the present utility model, is noted that can also make some improvement under the prerequisite that does not break away from the utility model principle, and these improvement also should be considered as protection domain of the present utility model.
Claims (3)
1. novel piston of conveying cylinder position-limit mechanism, comprise the conveying cylinder, piston head, the washing chamber, master cylinder, piston rod, piston one, card key, piston two, the washing chamber is connected to and carries between cylinder and master cylinder, piston rod is installed in master cylinder, piston head and piston one are installed respectively in the piston rod two ends, and piston head moves between conveying cylinder and washing chamber, it is characterized in that: the diameter design of one section of master cylinder bottom is larger than master cylinder front end, and place a piston two, and the diameter of piston two is greater than piston one, piston one is fixed on piston rod by card key, the cylinder bottom of master cylinder is provided with hydraulic oil port.
2. novel piston of conveying cylinder position-limit mechanism according to claim 1 is characterized in that: the distance of described master cylinder bottom enlarged diameter section for when piston two when carrying the cylinder direction to move to the limit, piston head is positioned at the conveying cylinder.
3. novel piston of conveying cylinder position-limit mechanism according to claim 1 and 2 is characterized in that: piston rod, piston one are blocked by card key and form a Coupled motion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220568168 CN203009268U (en) | 2012-10-31 | 2012-10-31 | Novel conveying cylinder piston limiting mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220568168 CN203009268U (en) | 2012-10-31 | 2012-10-31 | Novel conveying cylinder piston limiting mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203009268U true CN203009268U (en) | 2013-06-19 |
Family
ID=48600866
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220568168 Expired - Fee Related CN203009268U (en) | 2012-10-31 | 2012-10-31 | Novel conveying cylinder piston limiting mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203009268U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102966528A (en) * | 2012-10-31 | 2013-03-13 | 山推楚天工程机械有限公司 | Novel piston limiting mechanism of conveying cylinder |
-
2012
- 2012-10-31 CN CN 201220568168 patent/CN203009268U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102966528A (en) * | 2012-10-31 | 2013-03-13 | 山推楚天工程机械有限公司 | Novel piston limiting mechanism of conveying cylinder |
| CN102966528B (en) * | 2012-10-31 | 2015-09-30 | 山推楚天工程机械有限公司 | A kind of novel piston of conveying cylinder position-limit mechanism |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2061974B1 (en) | Pistonless compressor | |
| CN202690570U (en) | Hydraulic cylinder, hydraulic circuit, material pumping system and engineering machinery | |
| CN102424036A (en) | Telescopic support leg device and engineering machinery | |
| CN201714740U (en) | Multifunctional integrated hydraulic cylinder | |
| CN102979780A (en) | Hydraulic cylinder and engineering machine with hydraulic cylinder | |
| CN2851676Y (en) | Hydraulic cylinder with double work travels | |
| CN203009268U (en) | Novel conveying cylinder piston limiting mechanism | |
| CN202040145U (en) | Multistage locking cylinder | |
| CN102966528A (en) | Novel piston limiting mechanism of conveying cylinder | |
| CN102678540B (en) | Hydraulic oil cylinder, hydraulic oil circuit, material pumping system, and engineering machinery | |
| CN104373395A (en) | High-pressure oil supercharger for hoist cylinder locking device | |
| CN115199610A (en) | Full-stroke self-locking mechanism of hydraulic cylinder | |
| CN102705292A (en) | Hydraulic oil cylinder with novel connector body | |
| CN211852373U (en) | Two-stage independent control oil cylinder structure | |
| CN105465097B (en) | Engineering machinery and its multi-stage expansion mechanism | |
| CN202646221U (en) | Large aperture hydraulic cylinder | |
| CN104632756A (en) | Two-way telescopic quick-changing oil cylinder | |
| CN204985150U (en) | Mobile crane oil expenses cylinder and mobile crane | |
| CN105041914B (en) | A kind of twin-stage clutch general pump and vehicle | |
| CN202612248U (en) | Combined-type hydraulic cylinder | |
| CN202768518U (en) | Combination type hydraulic cylinder with floating cylinder barrels | |
| CN203902647U (en) | Steering oil pump belt oil tank assembly, a power steering system and vehicle | |
| CN202215529U (en) | Novel press oil cylinder | |
| CN204434186U (en) | A kind of doublestroke dual thrust hydraulic jack | |
| CN105371083A (en) | Concentrated lubricating system of heading machine |
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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130619 Termination date: 20161031 |