CN207423457U - A kind of hydraulic jack air-tightness detection device - Google Patents
A kind of hydraulic jack air-tightness detection device Download PDFInfo
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- CN207423457U CN207423457U CN201721571791.9U CN201721571791U CN207423457U CN 207423457 U CN207423457 U CN 207423457U CN 201721571791 U CN201721571791 U CN 201721571791U CN 207423457 U CN207423457 U CN 207423457U
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- rack
- lifting platform
- detection device
- hydraulic jack
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Abstract
The utility model is related to field of non destructive testing, specifically disclose a kind of hydraulic jack air-tightness detection device.The hydraulic jack air-tightness detection device includes rack and the workbench above rack, and several guide rods are equipped between the rack and workbench；The lifting platform being slidably connected with guide rod is further included, the workbench is equipped with the first driving means that driving lifting platform is slided along guide rod；The Lifting platform is fixedly connected with supporting plate to the one side of rack, and the test space is formed between supporting plate and lifting platform；The lifting platform is equipped with to compress the hold-down mechanism of jack to be measured；The upper surface of the rack is equipped with liquid bath corresponding with supporting plate, and detection liquid is equipped in the liquid bath；Further include the pressue device being arranged in rack.Above-described hydraulic jack air-tightness detection device, which realizes, more convenient to be accurately detected the quality of jack weld seam.
Description
Technical field
The utility model is related to field of non destructive testing more particularly to a kind of hydraulic jack air-tightness detection devices.
Background technology
Hydraulic jack is a kind of to use plunger as rigid top lift part, using hydraulic oil as the jack of driving medium.
Inner housing, outer housing and bottom plate are generally included, top lift part, inner housing and the concentric distribution of outer housing and difference are provided in inner housing
It is connected and sealed with bottom plate.Under normal conditions, hydraulic oil reservoir is deposited in cavity between the inner hull and the outer hull, is used
When, the in vivo hydraulic oil of chamber is delivered to inner housing by pumping, to promote top lift part.Due to storing the needs of hydraulic oil, outside
It needs to be tightly connected between housing and bottom plate, there are two types of currently used connection modes：Sealing element connects and welding.Welding due to
Easy to operate, good connecting effect is widely adopted.In order to ensure sealing performance, the quality of weld seam is evaluation jack performance
Important indicator.
Fig. 1 is a kind of structure diagram of the jack using welding manner connection, due to outer housing 12 and bottom plate 15 it
Between weld seam 14 for angle welding, conventional lossless detection method, such as the methods of ultrasound detection and ray detection, there is operation
The problem of inconvenient, seriously affects the efficiency of detection and the accuracy of monitoring result.
The content of the invention
The technical problem to be solved by the present invention is to provide a kind of hydraulic jack air-tightness detection device, more convenient standards
True is detected the quality of jack weld seam.
In order to solve the above-mentioned technical problem, the technical scheme that the utility model is provided is as follows：A kind of hydraulic jack is airtight
Property detection device, the workbench including rack and above rack, between the rack and workbench be equipped with several guiding
Bar；The lifting platform being slidably connected with guide rod is further included, the workbench is equipped with what driving lifting platform was slided along guide rod
First driving means；The Lifting platform is fixedly connected with supporting plate to the one side of rack, and is formed between supporting plate and lifting platform
The test space；The lifting platform is equipped with to compress the hold-down mechanism of jack to be measured；The upper surface of the rack be equipped with
The corresponding liquid bath of supporting plate, the liquid bath is interior to be equipped with detection liquid；Further include the pressue device being arranged in rack.
When carrying out crack detection, the weld seam of jack to be detected is placed in detection liquid, and to jack internal cavity
It pressurizes, by observing in detection liquid whether bubble occur, to judge that weld seam whether there is crack defect.It is examined with existing ultrasound
The non-destructive testings modes such as survey are compared, and internal pressure detection can accurately not only detect that weld seam whether there is crack defect, moreover it is possible to very well
Simulate inside cavity compression operating mode, while weld seam detection, complete the pressure test of jack to be detected, detect
Effect is good.Due to the special construction of jack, second between the first cavity and inner housing and top lift part between inner and outer shell
One-way conduction between cavity, when being filled with gases at high pressure to the first cavity, gas can be by the passage in bottom plate to the second cavity
Flowing, and promote top lift part lifting.So not only waste source of the gas, but also after detection is completed, the in vivo gas of the second chamber without
Method is independently excluded, it is necessary to which pressure release is manually exhausted.In the technical solution of the application, jack to be detected is placed on supporting plate
And hold-down mechanism, the contacts baseplate of the supporting plate and jack to be detected, hold-down mechanism compress top lift part, are placed on vertically
During pressurization, lifting occurs for top lift part.While realizing that jack to be detected compresses positioning, cleverly solve because of top
The problem of lifting part lifting and bringing, equipment operation is simple and convenient, and detection efficiency is high.
Preferably, the detection liquid is suds.
Preferably, the pressue device include air pump, the horizontally disposed and polishing head that is connected with air pump and
The second driving device that driving polishing head moves along a straight line vertically.Polishing head can axially movable, not only can be to be detected
During jack installation positioning, move backward, reserve enough operating spaces；In pressurization, the move distance of polishing head can root
According to the diameter flexible modulation of jack to be detected, adaptability is good.
Preferably, the end of the polishing head is equipped with sealing element, it is ensured that the in vivo pressure effect of chamber.
Preferably, the hold-down mechanism includes the mandril vertically set and driving mandril straight line vertically
3rd driving device of movement.Since in pressure process, top lift part can rise therewith, influence detection and operate, the setting of mandril,
Positioning and the effect compressed are not only acted as, moreover it is possible to prevent top lift part lifting during the test, it is ensured that internal cavity quickly rises
Pressure.When installing jack to be detected, mandril moves upwards, and reserves operating space；The distance that mandril moves downward can basis
The actual size flexible modulation of jack to be detected, adaptability are good.
Description of the drawings
Fig. 1 is the structure diagram of hydraulic jack；
Fig. 2 is the structure diagram of the present embodiment hydraulic jack air-tightness detection device；
Fig. 3 is the structural representation that jack is connected with detection device in the present embodiment hydraulic jack air-tightness detection device
Figure.
Specific embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, is further elaborated the utility model.It should be appreciated that specific embodiment described herein is only used to explain
The utility model is not used to limit the utility model.
Embodiment
As shown in Fig. 2, a kind of hydraulic jack air-tightness detection device, the work including rack 3 and above rack 3
Platform 2 is equipped with several guide rods 7 between the rack 3 and workbench 2.The lifting platform 4 being slidably connected with guide rod 7 is further included,
The workbench 2 is equipped with the first driving means 21 that driving lifting platform 4 is slided along guide rod 7.The lifting platform 4 is towards machine
The one side of frame 3 is fixedly connected with supporting plate 8, and forms the test space between supporting plate 8 and lifting platform 4.The upper surface of the rack 3
Detection liquid is equipped with equipped with liquid bath 31 corresponding with supporting plate, in the liquid bath 31, the detection liquid is preferably suds.
As shown in Figures 2 and 3, the pressue device 5 being arranged in rack 3 is further included, the pressue device 5 includes gas
The second drive that pump, polishing head 51 and driving polishing head 51 horizontally disposed and be connected with air pump move along a straight line vertically
Dynamic device 52.Polishing head 51 not only can be moved backward, stay when jack 1 to be detected is installed and positioned axially movable
Go out enough operating spaces.In pressurization, the move distance of polishing head 51 can flexibly be adjusted according to the diameter of jack 1 to be detected
Section, adaptability are good.The end of the polishing head 51 is equipped with sealing element 53, it is ensured that the in vivo pressure effect of chamber.
As shown in Figures 2 and 3, the lifting platform 4 is equipped with to compress the hold-down mechanism 6 of jack to be measured, described
Hold-down mechanism 6 includes the 3rd driving device that the mandril 62 vertically set and driving mandril 62 move along a straight line vertically
61.Since in pressure process, top lift part can rise therewith, detection operation is influenced, the setting of mandril 62 has not only acted as positioning
With the effect of compression, moreover it is possible to prevent top lift part lifting during the test, it is ensured that internal cavity rapid pressure.It is to be detected installing
During jack 1, mandril 62 moves upwards, and reserves operating space；The distance that mandril 62 moves downward can be according to be detected very heavy
The actual size flexible modulation on top 1, adaptability are good.
When carrying out crack detection, the weld seam of jack 1 to be detected is placed in detection liquid, and to jack internal cavity
13 pressurize, by observing in detection liquid whether bubble occur, to judge that weld seam 14 whether there is crack defect.Surpass with existing
The non-destructive testings mode such as sound detection is compared, and internal pressure detection can accurately not only detect that weld seam 14 with the presence or absence of crack defect, is gone back
The operating mode that 13 inside of cavity is pressurized can be simulated well, while weld seam detection, complete the pressure of jack 1 to be detected
Test, detection result is good, efficient.
A kind of jack air-tightness detection method using above-mentioned detection device, including at least following steps：
Step 1 first driving means 21 work, and adjust the height of lifting platform 4；3rd driving device 61 works, lifting top
Bar 62, until the spacing between mandril 62 and supporting plate 8 places jack 1 to be detected enough；
Jack 1 to be detected is placed on supporting plate 8 by step 2, adjusts position and angle that jack 1 to be detected is placed
Degree so that the top lift part of jack 1 to be detected is alignd with mandril 62, and the plug cock hole 11 on outer housing is towards pressue device 5 one
Side；Second driving device 52 works, and driving mandril 62 is moved to jack 1 to be detected, until mandril 62 is contacted with top lift part；
Step 3 first driving means 21 work, driving lifting platform 4, top plate and jack to be detected 1 form it is whole to
Liquid bath 31 moves, until the weld seam 14 between outer housing 12 and bottom plate 15 is completely submerged in detection liquid, and plug cock hole 11 is with adding
Pressure device 5 is located at sustained height；
The second driving device of step 4 52 works, and driving polishing head 51 is moved to 1 direction of jack to be detected, until plus
Pressure head 51 stretches into plug cock hole 11 and is tightly connected with plug cock hole 11；Pressue device 5, which works, carries out 1 inner chamber body of jack to be detected
Pressurization, and pressurize 15-30min；Whether there is bubble in observation detection liquid, if there is bubble, then weld seam has crack defect, instead
It, then weld seam does not have crack defect.
Above-described hydraulic jack air-tightness detection device, it is more convenient that accurately the quality of jack weld seam is carried out
Detection.
In short, the above is only the preferred embodiment of the utility model only, it is not intended to limit the utility model, it is all
All any modification, equivalent and improvement made within spirit of the present utility model and principle etc., should be included in this practicality
Within new protection domain.
Claims (5)
1. a kind of hydraulic jack air-tightness detection device, it is characterised in that：Including rack（3）With positioned at rack（3）Top
Workbench（2）, the rack（3）And workbench（2）Between be equipped with several guide rods（7）；It further includes and guide rod（7）It slides
The lifting platform of connection（4）, the workbench（2）It is equipped with driving lifting platform（4）Along guide rod（7）The the first driving dress slided
It puts（21）；The lifting platform（4）Towards rack（3）One side be fixedly connected with supporting plate（8）, and in supporting plate（8）With lifting platform（4）
Between form the test space；The lifting platform（4）It is equipped with to compress the hold-down mechanism of jack to be measured（6）；The rack
（3）Upper surface be equipped with liquid bath corresponding with supporting plate（31）, the liquid bath（31）It is interior to be equipped with detection liquid；Further include the machine of being arranged on
Frame（3）On pressue device（5）.
2. hydraulic jack air-tightness detection device according to claim 1, it is characterised in that：The detection liquid is fertilizer
Soap water.
3. hydraulic jack air-tightness detection device according to claim 1 or 2, it is characterised in that：The pressurization dress
It puts（5）Including air pump, the horizontally disposed and polishing head that is connected with air pump（51）And driving polishing head（51）It is straight vertically
Second driving device of line movement（52）.
4. hydraulic jack air-tightness detection device according to claim 3, it is characterised in that：The polishing head（51）'s
End is equipped with sealing element（53）.
5. according to the hydraulic jack air-tightness detection device described in claim 1 or 2 or 4, it is characterised in that：The compression
Mechanism（6）Including the mandril vertically set（62）And driving mandril（62）The 3rd driving dress to move along a straight line vertically
It puts（61）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721571791.9U CN207423457U (en) | 2017-11-22 | 2017-11-22 | A kind of hydraulic jack air-tightness detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721571791.9U CN207423457U (en) | 2017-11-22 | 2017-11-22 | A kind of hydraulic jack air-tightness detection device |
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| Publication Number | Publication Date |
|---|---|
| CN207423457U true CN207423457U (en) | 2018-05-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721571791.9U Active CN207423457U (en) | 2017-11-22 | 2017-11-22 | A kind of hydraulic jack air-tightness detection device |
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| CN (1) | CN207423457U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107806968A (en) * | 2017-11-22 | 2018-03-16 | 海盐县华星机械有限公司 | A kind of hydraulic jack air-tightness detection device and detection method |
| CN116818207A (en) * | 2023-08-30 | 2023-09-29 | 济宁鲁威液压科技股份有限公司 | Device and method for detecting air tightness of hydraulic element |
-
2017
- 2017-11-22 CN CN201721571791.9U patent/CN207423457U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107806968A (en) * | 2017-11-22 | 2018-03-16 | 海盐县华星机械有限公司 | A kind of hydraulic jack air-tightness detection device and detection method |
| CN116818207A (en) * | 2023-08-30 | 2023-09-29 | 济宁鲁威液压科技股份有限公司 | Device and method for detecting air tightness of hydraulic element |
| CN116818207B (en) * | 2023-08-30 | 2023-12-08 | 济宁鲁威液压科技股份有限公司 | Device and method for detecting air tightness of hydraulic element |
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Address after: Group 22, Yongfu community, Wanghai street, Haiyan County, Jiaxing City, Zhejiang Province Patentee after: Haiyan Huaxing Technology Co., Ltd Address before: 314317 22 groups of Yongfu village, Xitang Bridge Town, Haiyan County, Jiaxing, Zhejiang Patentee before: HAIYAN HUAXING MACHINERY CO., LTD. |