CN106840555B - Hydraulic cylinder air tightness detection apparatus - Google Patents
Hydraulic cylinder air tightness detection apparatus Download PDFInfo
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- CN106840555B CN106840555B CN201611228477.0A CN201611228477A CN106840555B CN 106840555 B CN106840555 B CN 106840555B CN 201611228477 A CN201611228477 A CN 201611228477A CN 106840555 B CN106840555 B CN 106840555B
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- Prior art keywords
- hydraulic cylinder
- detection
- air
- detection slot
- graded tube
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
- G01M3/32—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for containers, e.g. radiators
Abstract
The present invention relates to a kind of detection devices, and in particular to hydraulic cylinder air tightness detection apparatus.The device includes inflator and detection slot, and air inlet pipe is connected on the inflator, and the outlet side of the air inlet pipe is equipped with attachment cap；The bottom of the detection slot is equipped with the pedestal for fixer cylinder pressure, and the side of detection slot is rotatably equipped with stopper rod chuck, and side of the stopper rod chuck to outside detection slot is fixedly connected with rotating disc；The graded tube for being provided with pin hole is fixedly installed in detection slot, the graded tube is provided with marking fluid, and the free end of graded tube is connected with Taper Pipe, and the free end of the Taper Pipe is equipped with snap ring.The present apparatus is easy to operate when detecting air-tightness between hydraulic cylinder and piston, the air-tightness of hydraulic cylinder can be fast and accurately judged, to improve detection efficiency.
Description
Technical field
The present invention relates to a kind of detection devices, and in particular to hydraulic cylinder air tightness detection apparatus.
Background technique
Hydraulic cylinder is that hydraulic energy is changed into mechanical energy and does the hydraulic of straight reciprocating motion (or pendulum motion) to execute member
Part.Its structure is simple, reliable operation.Deceleration device when realizing reciprocating motion, can be removed from it, and do not have drive gap,
Movement is steady, therefore is used widely in the hydraulic system of various machinery.Hydraulic cylinder power output and piston effective area and
The pressure difference on its both sides is directly proportional；Hydraulic cylinder substantially by cylinder barrel and cylinder cap, piston and piston rod, sealing device, buffer unit with
Exhaust apparatus composition.The most common problem of hydraulic cylinder is exactly oil leakage phenomenon, so that the hydraulic cylinder produced will carry out one
The detection of a sealing performance, the main object of detection are the sealing performances between hydraulic cylinder and piston, judge institute by detection
Whether the hydraulic cylinder produced is qualified.Since the general air-tightness for detecting hydraulic cylinder is all using multi-faceted detection side at present
Formula, thus the detection of comprehensive realization hydraulic cylinder, but such detection is slow, and it is fast not to be able to satisfy large batch of hydraulic cylinder
Speed detection, so that detection efficiency is lower.
Summary of the invention
The purpose of the present invention is to provide a kind of hydraulic cylinder air tightness detection apparatus for being able to achieve quickly detection air-tightness.
To achieve the goals above, used base case is hydraulic cylinder air tightness detection apparatus, which includes filling
Mechanism of qi and detection slot are connected with air inlet pipe on the inflator, and the outlet side of the air inlet pipe is equipped with attachment cap；The detection
The bottom of slot is equipped with the pedestal for fixer cylinder pressure, and the side of detection slot is rotatably equipped with stopper rod chuck, the stopper rod card
Side of the disk to outside detection slot is fixedly connected with rotating disc；The graded tube for being provided with pin hole, the quarter are fixedly installed in detection slot
Degree pipe is provided with marking fluid, and the free end of graded tube is connected with Taper Pipe, and the free end of the Taper Pipe is equipped with snap ring.
The working principle of base case: this programme is by the way that the hydraulic cylinder for needing to detect to be placed on the pedestal in detection slot
It is fixed, since there are two hydraulic fluid ports on hydraulic cylinder, so when detecting the air-tightness between hydraulic cylinder and piston, by by air inlet pipe
The attachment cap of outlet side is connect with one of hydraulic fluid port, is then started inflator and is inflated into hydraulic cylinder, makes the liquid on hydraulic cylinder
Compression bar ejects outward, and pushes up to on stopper rod chuck, and hydraulic stem cannot be continued to stretch out by dieback at this time, thus corresponding piston
It will stop sliding；Taper Pipe is connected on another hydraulic fluid port of hydraulic cylinder by snap ring at this time, and inflator is kept to continue to fill
Gas, and constantly increase the blowing pressure of inflator, when sealing performance is bad between hydraulic cylinder and piston, the gas being filled with is just
It can be discharged into Taper Pipe from another oil port, the gas of discharge is filled into graded tube by Taper Pipe, to make the label in graded tube
Liquid generates movement, to realize the detection of air-tightness between hydraulic cylinder and piston；In addition when the rotating disc on rotation stopper rod chuck
When, hydraulic stem rotation will be also driven, and rotation is passed into the piston in hydraulic cylinder, and so that it is generated rotation, lived by making
Plug generates rotation, to simulate air-leakage test when piston and hydraulic cylinder generation relative motion.Compared with prior art, originally
Device is easy to operate when detecting air-tightness between hydraulic cylinder and piston, can fast and accurately judge the air-tightness of hydraulic cylinder
Can, to improve detection efficiency.
Base case is optimized to obtain prioritization scheme 1, the diameter of the graded tube is the glass graduated tube of 3-5mm.
Since the air leaked from piston when detection is less, so by the diameter for reducing graded tube, so that the label in graded tube
Liquid movement is more obvious, thus the convenient judgement to air-tightness.
Optimizing to obtain prioritization scheme 2 to prioritization scheme 1, the stopper rod chuck includes top plate, supporting plate and multiple cylinders,
Air bag is connected between the top plate and supporting plate, the air bag is communicated with each cylinder, and the piston rod of each cylinder is in together
Hydraulic stem in one plane and perpendicular to hydraulic cylinder.Setting in this way, when the hydraulic stem of hydraulic cylinder is against stopper rod chuck
When top plate, the air bag between top plate and supporting plate is compressed, to the air of air bag is extruded into connected cylinder, is made
The piston rod of each cylinder stretches out, and pushes up to hydraulic stem circumferential surface, to realize the fixation to hydraulic stem, while hydraulic stem more compresses
When top plate, the active force of cylinder piston rod is bigger, to generate the fixed self-locking effect of hydraulic stem.
Prioritization scheme 2 is optimized to obtain prioritization scheme 3, the compression ring of expansion after inflation is equipped in the attachment cap,
The compression ring is communicated with air inlet pipe.Setting in this way, when can attachment cap be connected on hydraulic fluid port, compression ring can pass through
The effect of inflation, so that attachment cap generates preferable sealing function with corresponding hydraulic fluid port.
Prioritization scheme 3 is optimized to obtain prioritization scheme 4, the cavity being connected to outer wall is provided in the pedestal, it is described
Cavity is equipped with vacuum pump；The top surface of pedestal is equipped with non-slip mat, is provided with the sucker being connected to cavity in the non-slip mat.Pass through
Such setting the cylinder body of hydraulic cylinder can be firmly sucked by the negative pressure generated at sucker, to prevent it when detecting
Generate sliding.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of hydraulic cylinder air tightness detection apparatus；
Fig. 2 is the structural schematic diagram of attachment cap.
Specific embodiment
Drawing reference numeral explanation: inflator 1, air inlet pipe 2, attachment cap 3, Taper Pipe 4, graded tube 5, marking fluid 6, detection slot 7, plug
Bar chuck 8, rotating disc 9, pedestal 10, the first hydraulic fluid port 11, hydraulic stem 12, the second hydraulic fluid port 13, compression ring 14, cylinder 15.
Hydraulic cylinder air tightness detection apparatus as shown in Figure 1, including inflator 1 and detection slot 7, be connected on inflator 1 into
Attachment cap 3 is installed in the outlet side of tracheae 2, air inlet pipe 2, as shown in Fig. 2, being equipped with compression ring 14 in attachment cap 3, compression ring 14 passes through needle
Pipe is connected with air inlet pipe 2.The bottom mounting seat 10 of detection slot 7, be provided in pedestal 10 with the external cavity connected, pacify in cavity
Equipped with vacuum pump, the top surface of pedestal 10 is equipped with the non-slip mat of one layer of rubber, is provided with the sucker being connected to cavity in non-slip mat.Detection
Rotational installation rotation stopper rod chuck 8, stopper rod chuck 8 are made of supporting plate and top plate, connect between supporting plate and top plate on the right side wall of slot 7
It is connected to the air bag equipped with air, the air bag and multiple cylinders 15 are connected, and the piston rod of each cylinder 15 is all perpendicular to hydraulic cylinder
Hydraulic stem 12, and each piston rod is all on same plane；It is connected with rotating disc 9 on the outside of supporting plate, is installed on rotating disc 9
There is handle.The right side wall of detection slot 7 is further fixed on graded tube 5, graded tube 5 close to the side of 7 right side wall of detection slot be equipped with it is outer
The pin hole that boundary communicates, the diameter of graded tube 5 are 4mm, and internal equipped with red marking fluid 6, the free end of graded tube 5 and cone
Pipe 4 connects, and is equipped with snap ring on Taper Pipe 4.
When detecting the air-tightness of hydraulic cylinder and itself piston, hydraulic cylinder is placed on the pedestal 10 in detection slot 7 solid
It is fixed, and start vacuum pump；Since there are two hydraulic fluid ports on hydraulic cylinder, it is set to the first hydraulic fluid port 11 and the second hydraulic fluid port 13 for the time being, so
When detecting the air-tightness between hydraulic cylinder and piston, by the way that the attachment cap 3 of 2 outlet side of air inlet pipe is connect with the first hydraulic fluid port 11,
Then starting inflator 1 is inflated into hydraulic cylinder, ejects the hydraulic stem 12 on hydraulic cylinder outward, and push up and extremely arrive stopper rod chuck 8
On, and the piston rod on cylinder 15 will be pushed against on hydraulic stem 12, and hydraulic stem cannot be continued to stretch out by dieback at this time, thus right
The piston answered will also stop sliding；Taper Pipe 4 is connected on the second hydraulic fluid port 13 of hydraulic cylinder by snap ring at this time, and keeps filling
Mechanism of qi 1 continues to inflate, and constantly increases the blowing pressure of inflator 1, when sealing performance is bad between hydraulic cylinder and piston, institute
The gas being filled with will be discharged into Taper Pipe 4 from the second oil port, and the gas of discharge is filled into graded tube 5 by Taper Pipe 4, to make to carve
The marking fluid 6 spent in pipe 5 generates movement, to realize the detection of air-tightness between hydraulic cylinder and piston；In addition when rotation stopper rod
When rotating disc 9 on chuck 8, also hydraulic stem 12 will be driven to rotate, and rotation is passed into the piston in hydraulic cylinder, also makes it
Rotation is generated, by making piston generate rotation, to simulate air-leakage test when piston generates relative motion with hydraulic cylinder.
What has been described above is only an embodiment of the present invention, and the common sense such as well known specific structure or characteristic are not made herein in scheme
Excessive description.It, without departing from the structure of the invention, can be with it should be pointed out that for those skilled in the art
Several modifications and improvements are made, these also should be considered as protection scope of the present invention, these all will not influence what the present invention was implemented
Effect and patent practicability.The scope of protection required by this application should be based on the content of the claims, in specification
The records such as specific embodiment can be used for explaining the content of claim.
Claims (3)
1. a kind of hydraulic cylinder air tightness detection apparatus, it is characterised in that: including inflator and detection slot, be connected on the inflator
The outlet side of air inlet pipe, the air inlet pipe is equipped with attachment cap；The bottom of the detection slot is equipped with for fixer cylinder pressure
Pedestal, the side of detection slot are rotatably equipped with stopper rod chuck, and side of the stopper rod chuck to outside detection slot, which is fixedly connected with, to be turned
Moving plate；The graded tube for being provided with pin hole is fixedly installed in detection slot, the graded tube is provided with marking fluid, the free end of graded tube
It is connected with Taper Pipe, the free end of the Taper Pipe is equipped with snap ring, and the diameter of the graded tube is the glass graduated tube of 3-5mm, institute
Stating stopper rod chuck includes top plate, supporting plate and multiple cylinders, is connected with air bag between the top plate and supporting plate, the air bag with it is each
Cylinder communicates, and the piston rod of each cylinder is in the hydraulic stem on same plane and perpendicular to hydraulic cylinder.
2. hydraulic cylinder air tightness detection apparatus according to claim 1, it is characterised in that: after being equipped with inflation in the attachment cap
The compression ring of expansion, the compression ring are communicated with air inlet pipe.
3. hydraulic cylinder air tightness detection apparatus according to claim 2, it is characterised in that: be provided in the pedestal and connect with outer wall
Logical cavity, the cavity are equipped with vacuum pump；The top surface of pedestal is equipped with non-slip mat, is provided in the non-slip mat and connects with cavity
Logical sucker.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611228477.0A CN106840555B (en) | 2016-12-27 | 2016-12-27 | Hydraulic cylinder air tightness detection apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611228477.0A CN106840555B (en) | 2016-12-27 | 2016-12-27 | Hydraulic cylinder air tightness detection apparatus |
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| Publication Number | Publication Date |
|---|---|
| CN106840555A CN106840555A (en) | 2017-06-13 |
| CN106840555B true CN106840555B (en) | 2018-12-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201611228477.0A Active CN106840555B (en) | 2016-12-27 | 2016-12-27 | Hydraulic cylinder air tightness detection apparatus |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107655892B (en) * | 2017-10-31 | 2023-09-12 | 安徽能通新能源科技有限公司 | Lithium battery monitoring device |
| CN109489910B (en) * | 2018-12-29 | 2020-07-17 | 重庆维庆液压机械有限公司 | Hydraulic cylinder detection device |
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| RU2052782C1 (en) * | 1992-04-01 | 1996-01-20 | Сергей Григорьевич Межов | Device for inspecting air-tightness of annular seals of hydraulic cylinders |
| JP2001289731A (en) * | 2000-04-05 | 2001-10-19 | Akashi Corp | Pulsation pressure testing machine |
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| CN106840555A (en) | 2017-06-13 |
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| TR01 | Transfer of patent right |
Effective date of registration: 20210223 Address after: 401120 Yubei District, Chongqing Shuangfeng bridge airport development zone, Xiangyu Road, No. 15, 2. Patentee after: Chongqing Bochuang Intellectual Property Operations Co.,Ltd. Address before: No. 999 Xingguang Avenue, Yongchuan District, Chongqing 402160 (in Fenghuang Lake Industrial Park, Yongchuan Industrial Park, Chongqing) Patentee before: CHONGQING WAYCH HYDRAULIC MACHINERY Co.,Ltd. |
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