CN205780047U - A kind of hydraulic cylinder sealing detection device - Google Patents
A kind of hydraulic cylinder sealing detection device Download PDFInfo
- Publication number
- CN205780047U CN205780047U CN201620724114.5U CN201620724114U CN205780047U CN 205780047 U CN205780047 U CN 205780047U CN 201620724114 U CN201620724114 U CN 201620724114U CN 205780047 U CN205780047 U CN 205780047U
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- hydraulic cylinder
- hydraulic
- fluid pressure
- hydraulic pump
- pressure line
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Abstract
The utility model discloses a kind of hydraulic cylinder sealing detection device, including: hydraulic system, hydraulic cylinder and load device, described hydraulic system includes fuel tank, motor, hydraulic pump and some fluid pressure lines, described motor is connected with hydraulic pump, the oil-out of hydraulic pump is connected with the rodless cavity of hydraulic cylinder by fluid pressure line, the oil inlet end of hydraulic pump, the rod chamber of hydraulic cylinder all connect fuel tank by fluid pressure line, and the fluid pressure line that the fluid pressure line that is connected with hydraulic pump at the rodless cavity of hydraulic cylinder, hydraulic cylinder rod chamber are connected with fuel tank is respectively mounted a mass flowmenter；Described load device includes variable weights, spring and dividing plate, described variable weights and the plunger rod contacts of hydraulic cylinder, fixedly mounts spring between variable weights and dividing plate.This utility model can obtain result of the test to quicklook, it also avoid the impact that result of the test is produced by Hydraulic Elements more in traditional pressure dwelling loop, and improves accuracy and the cogency of test.
Description
Technical field
This utility model relates to hydraulic system field, specifically a kind of hydraulic cylinder sealing detection device.
Background technology
The hydraulic pressure that hydraulic energy is changed into mechanical energy by hydraulic cylinder, do straight reciprocating motion (or oscillating motion) performs unit
Part.Its simple in construction, reliable operation.When realizing moving back and forth with it, deceleration device can be removed from, and there is no drive gap,
Stable movement, is therefore used widely in the hydraulic system of various machineries.Hydraulic cylinder need after assembly welding completes into
Row sealing propertytest is the most qualified to determine its sealing.The generally method of detection is to use positive chamber and anti-chamber to oil cylinder to enter
Row pressurize is tested, and observes whether in-cylinder pressure has pressure drop, if without pressure drop, then non-internal leakage, sealing are described within the time of regulation
Well.Owing to using more check valve, overflow valve etc. in pressure dwelling loop, result of the test all can be had one fixing by its sealing property
Ring, as leakage occurs in somewhere in the loop, pressure drop will occur in hydraulic cylinder, cause the testing result of mistake, additionally, pressurize is returned
The pressure limit that road is provided that is limited, and the load change scope of hydraulic cylinder is little, can only collect several groups of data at the trial,
Make result of the test cogency little.
Utility model content
The purpose of this utility model is to provide a kind of hydraulic cylinder sealing detection device, to solve in above-mentioned background technology
The problem proposed.
For achieving the above object, the following technical scheme of this utility model offer:
A kind of hydraulic cylinder sealing detection device, including: hydraulic system, hydraulic cylinder and load device, described hydraulic pressure system
System includes fuel tank, motor, hydraulic pump and some fluid pressure lines, and described motor is connected with hydraulic pump, and the oil-out of hydraulic pump leads to
Crossing fluid pressure line to be connected with the rodless cavity of hydraulic cylinder, the oil inlet end of hydraulic pump, the rod chamber of hydraulic cylinder are all connected by fluid pressure line
Connected tank, the hydraulic tube that fluid pressure line that the rodless cavity at hydraulic cylinder is connected with hydraulic pump, hydraulic cylinder rod chamber are connected with fuel tank
A mass flowmenter it is respectively mounted on road；Described load device includes variable weights, spring and dividing plate, described variable weights and hydraulic pressure
The plunger rod contacts of cylinder, fixedly mounts spring between variable weights and dividing plate.
As further program of the utility model: described dividing plate is fixed on one end of spring, dividing plate contacts with bolt,
In the rack-mounted screwed hole of described bolt.
As further program of the utility model: on the fluid pressure line that described hydraulic pump is connected with the rodless cavity of hydraulic cylinder
Being also connected with overflow valve, described overflow valve connects fuel tank.
Compared with prior art, the beneficial effects of the utility model are: this utility model is according to Flow continuity principle, profit
Detect flow with the effusion meter being arranged on hydraulic cylinder two ends, can obtain result of the test to quicklook, it also avoid traditional guarantor
Push back the impact that result of the test is produced by Hydraulic Elements more in road；Hydraulic cylinder is installed additional the load of scalable pretightning force size
Device, can improve accuracy and the cogency of test.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Detailed description of the invention
Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is carried out
Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of this utility model rather than whole
Embodiment.Based on the embodiment in this utility model, those of ordinary skill in the art are not under making creative work premise
The every other embodiment obtained, broadly falls into the scope of this utility model protection.
Refer to Fig. 1, in this utility model embodiment, a kind of hydraulic cylinder sealing detection device, including: hydraulic system,
Hydraulic cylinder 6 and load device, described hydraulic system includes fuel tank 2, motor 3, hydraulic pump 4 and some fluid pressure lines, described
Motor 3 is connected with hydraulic pump 4, and the oil-out of hydraulic pump 4 is connected with the rodless cavity of hydraulic cylinder 6 by fluid pressure line, hydraulic pump 4
Oil inlet end, the rod chamber of hydraulic cylinder 6 all connect fuel tank 2 by fluid pressure line, and the rodless cavity at hydraulic cylinder 6 is connected with hydraulic pump 4
Fluid pressure line, be respectively mounted a mass flowmenter 1 on the fluid pressure line that is connected with fuel tank 2 of hydraulic cylinder 6 rod chamber, be used for detecting
Flow through the hydraulic fluid flow rate in fluid pressure line, when hydraulic pump 4 pump oil, if hydraulic cylinder sealing is good in theory, two quality
The detected value of effusion meter 1 should be consistent, otherwise, it is believed that the problem that hydraulic cylinder exists internal hemorrhage due to trauma；Described load device includes
Variable weights 8, spring 9 and dividing plate 10, described variable weights 8 contacts with the piston rod 7 of hydraulic cylinder 6, between variable weights 8 and dividing plate 10
Fixed installation spring 9, when piston rod 7 moves, promotes variable weights 8 to move, makes spring 9 be compressed, and the elastic force of spring 9 can be regarded
The load that piston rod 7 is subject to.
Described dividing plate 10 is fixed on one end of spring 9, and dividing plate 10 contacts with bolt 12, and described bolt 12 is arranged on frame
In screwed hole on 11, regulate bolt 12, promote dividing plate 10 to move, the length of spring 9 can be changed, i.e. change variable weights 8 to work
The pretightning force of stopper rod 7, the most at the trial, can record multi-group data according to the size of load, make result of the test more accuracy
And cogency.
Overflow valve 5, described overflow valve 5 it is also connected with the rodless cavity of hydraulic cylinder 6 on the fluid pressure line that described hydraulic pump 4 is connected
Connect fuel tank 2, when pressure is excessive in pipeline, overflow valve off-load, play the effect of relief valve.
It is obvious to a person skilled in the art that this utility model is not limited to the details of above-mentioned one exemplary embodiment, and
And in the case of without departing substantially from spirit or essential attributes of the present utility model, it is possible to realize this practicality in other specific forms new
Type.Therefore, no matter from the point of view of which point, all should regard embodiment as exemplary, and be nonrestrictive, this practicality is new
The scope of type is limited by claims rather than described above, it is intended that by the containing of equivalency in claim that fall
All changes in justice and scope are included in this utility model.Should not be considered as any reference in claim limiting
Involved claim.
Although moreover, it will be appreciated that this specification is been described by according to embodiment, but the most each embodiment only wraps
Containing an independent technical scheme, this narrating mode of description is only that for clarity sake those skilled in the art should
Description can also be formed those skilled in the art through appropriately combined as an entirety, the technical scheme in each embodiment
May be appreciated other embodiments.
Claims (3)
1. a hydraulic cylinder sealing detection device, including: hydraulic system, hydraulic cylinder and load device, it is characterised in that: institute
Stating hydraulic system and include fuel tank, motor, hydraulic pump and some fluid pressure lines, described motor is connected with hydraulic pump, hydraulic pump
Oil-out is connected with the rodless cavity of hydraulic cylinder by fluid pressure line, and the oil inlet end of hydraulic pump, the rod chamber of hydraulic cylinder all pass through liquid
Pressure pipe road connects fuel tank, and fluid pressure line, hydraulic cylinder rod chamber that the rodless cavity at hydraulic cylinder is connected with hydraulic pump are connected with fuel tank
Fluid pressure line on be respectively mounted a mass flowmenter；Described load device includes variable weights, spring and dividing plate, described heavy burden
Block and the plunger rod contacts of hydraulic cylinder, fixedly mount spring between variable weights and dividing plate.
A kind of hydraulic cylinder sealing detection device the most according to claim 1, it is characterised in that: described dividing plate is fixed on bullet
One end of spring, dividing plate contacts with bolt, in the rack-mounted screwed hole of described bolt.
A kind of hydraulic cylinder sealing detection device the most according to claim 1, it is characterised in that: described hydraulic pump and hydraulic pressure
Being also connected with overflow valve on the fluid pressure line that the rodless cavity of cylinder connects, described overflow valve connects fuel tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620724114.5U CN205780047U (en) | 2016-07-11 | 2016-07-11 | A kind of hydraulic cylinder sealing detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620724114.5U CN205780047U (en) | 2016-07-11 | 2016-07-11 | A kind of hydraulic cylinder sealing detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205780047U true CN205780047U (en) | 2016-12-07 |
Family
ID=58124359
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620724114.5U Expired - Fee Related CN205780047U (en) | 2016-07-11 | 2016-07-11 | A kind of hydraulic cylinder sealing detection device |
Country Status (1)
| Country | Link |
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| CN (1) | CN205780047U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108361243A (en) * | 2018-02-27 | 2018-08-03 | 龙工(福建)液压有限公司 | A kind of hydraulic cylinder detection method |
| CN114483711A (en) * | 2022-02-04 | 2022-05-13 | 浙江大学 | Constant parameter method for detecting and evaluating leakage in hydraulic cylinder and detection device thereof |
| CN114962389A (en) * | 2021-12-14 | 2022-08-30 | 武汉理工大学 | Hydraulic cylinder piston rod sealing state real-time monitoring device |
-
2016
- 2016-07-11 CN CN201620724114.5U patent/CN205780047U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108361243A (en) * | 2018-02-27 | 2018-08-03 | 龙工(福建)液压有限公司 | A kind of hydraulic cylinder detection method |
| CN114962389A (en) * | 2021-12-14 | 2022-08-30 | 武汉理工大学 | Hydraulic cylinder piston rod sealing state real-time monitoring device |
| CN114483711A (en) * | 2022-02-04 | 2022-05-13 | 浙江大学 | Constant parameter method for detecting and evaluating leakage in hydraulic cylinder and detection device thereof |
| CN114483711B (en) * | 2022-02-04 | 2022-11-29 | 浙江大学 | Constant parameter method for detecting and evaluating leakage in hydraulic cylinder and detection device thereof |
| WO2023147740A1 (en) * | 2022-02-04 | 2023-08-10 | 浙江大学 | Constant value parameter method for detecting and evaluating leakage in hydraulic cylinder and detection device thereof |
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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: 20161207 Termination date: 20170711 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |