CN102829986A - Jack detection device - Google Patents
Jack detection device Download PDFInfo
- Publication number
- CN102829986A CN102829986A CN2011101629680A CN201110162968A CN102829986A CN 102829986 A CN102829986 A CN 102829986A CN 2011101629680 A CN2011101629680 A CN 2011101629680A CN 201110162968 A CN201110162968 A CN 201110162968A CN 102829986 A CN102829986 A CN 102829986A
- Authority
- CN
- China
- Prior art keywords
- lifting jack
- jack
- portable beam
- test
- lifting
- 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.)
- Pending
Links
Images
Landscapes
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a jack detection device which comprises a jack performance detection device and a jack performance detection console. According to the jack detection device, a jack is detected by a fixed reference, so that the detection difficulty of the jack to be detected is simplified, and an effective comparison reference is provided for detection of the jacks of the same batch and type; and at the same time, the jack detection device disclosed by the invention takes a maximal jacking state of the jack as an initial detection state, so that the self-locking, pressure-maintaining and stressed performances of the jack to be detected within a maximal jacking upper limit range are effectively guaranteed.
Description
Technical field
The present invention relates to a kind of pick-up unit, relate in particular to a kind of whether lifting jack reaches request for utilization after reparation pick-up unit that detects.
Background technology
Lifting jack is that a kind of the top with rigidity lifted part as equipment, through the light little hoisting device of top bracket or bottom claw jacking weight in stroke.Can be divided into three types of tooth bar lifting jack, screw jack and hydraulic jack by architectural feature.Wherein screw jack and hydraulic jack are the most general, and wherein hydraulic jack is owing to having compact conformation, stable working, self-locking action etc. being arranged, so be widely used.
As little heavy-duty hoisting equipment commonly used; Must check the whether work of the whether in proper working order and self-locking holding device of each parts before hydraulic jack is used with remaining valid, hydraulic jack withstand on dispatch from the factory or keep in repair after preceding test and the inspection that must carry out validity to the parts of being correlated with and function of coming into operation.Particularly, before coming into operation, need to a series of performance test of lifting jack to the long-term hydraulic jack of using perhaps improper use to cause the lifting jack component abrasion to reprocess.
At present, domestic in the lifting jack context of detection, still adopting a bit perhaps, the multi-point sampler method detects.The structure of the jack pressure tester of its use is very simple; Mainly partly form by pressure transducer, pressure data display instrument, test board etc.; Wherein pressure transducer is used to gather the pressure of lifting jack; The pressure data display instrument converts the electric pressure signal of pressure transducer collection to digital signal, and is presented on the charactron, and test board is used to lay lifting jack.Its test process is: the strange near point of taking to be tested is placed on the test board suitable parallels on pad below the lifting jack.Shake jack handle (electronic then starter motor), the rising lifting jack makes pressure transducer stressed.Then continue the rising lifting jack, make the stressed rated pressure that reaches of pressure transducer, and then carry out stressed and locking test.The test here is the elevate a turnable ladder spare of the lifting jack that raises step by step of employing, the method for active force test.
Hydraulic jack withstands on repairs lifting jack need be carried out in the back for the security that guarantees use Performance Detection; Particularly reach the self-locking property under the ultimate limit state of the pressurize self-locking property of prescribing a time limit on the elevate a turnable ladder at lifting jack; To guarantee the safe handling of lifting jack; The industrial accident of avoiding occurring lifting jack catastrophic failure in actual use and causing, this device is mainly verified the maximum load of lifting jack, the withstand voltage test of rated load.
Summary of the invention
To above problem; The invention discloses a kind of lifting jack test unit; Through displacement transducer, pressure transducer and portable beam structure; Test the self-locking property that the initial state of lifting jack to be detected is prescribed a time limit on maximum elevate a turnable ladder, and passive when stressed at the elevate a turnable ladder state less than the self-locking pressure maintaining performance under the elevate a turnable ladder upper limit.
Lifting jack test unit disclosed by the invention comprises lifting jack performance test apparatus and lifting jack performance test operator's console; Described lifting jack performance test apparatus comprises top board, base plate and bolt bracing frame; Described lifting jack test unit also comprises portable beam, following portable beam, pressure transducer and displacement transducer; Described upward portable beam and following portable beam are installed between the top board and base plate of lifting jack test unit; Be flexible connection between last portable beam and the following portable beam, described displacement transducer is arranged on the base plate, and described pressure transducer is installed on the top board.
Be respectively equipped with lifting jack locating slot or lifting jack positioning convex ring above described upward portable beam and the following portable beam.
Described pressure transducer is installed on the portable beam; Described top board or base plate are provided with handle or leg.
Described lifting jack performance test operator's console comprises shock-proof pressure gauge, power value sensor digital display instrument, displacement transducer digital display instrument, proportional pressure control valve adjusting button, hydraulic system start button, hydraulic system stop button, solenoid directional control valve, unloader, hydraulic jack tubing interface, shock-proof pressure gauge pressure measurement hose connection, power value sensing data line interface, displacement transducer data line interface, electric cabinet external power interface.
Lifting jack test unit disclosed by the invention is through fixing benchmark test lifting jack; Simplified the detection difficulty of lifting jack to be detected; Also effective contrast benchmark is provided simultaneously for same batch of detection with the lifting jack of type; Simultaneously because lifting jack test unit disclosed by the invention is maximum top act state with lifting jack serves as the test original state, guaranteed that effectively lifting jack to be measured lifts the self-locking pressurize stress performance in the upper range on the maximum top.
Description of drawings
Fig. 1 is the front view of the structural representation of lifting jack performance test apparatus of the present invention;
Fig. 2 is the vertical view of the structural representation of lifting jack performance test apparatus of the present invention;
Fig. 3 is a lifting jack pressurize lock test displacement time diagram to be measured;
Displacement-time ideal curve the figure of Fig. 4 lifting jack continuous performance test
Fig. 5 stage displacement time curve figure that creeps.
Reference numerals list:
13. lifting jack positioning convex ring 15. displacement transducers
21. portable beam on the top board 22.
25. following portable beam 26. bolt bracing frames
27. base plate 31. handles
33. pressure transducer 37. legs
11. lifting jack locating slot 23. lifting jack to be measured
24. hydraulic jack
Embodiment
Below in conjunction with accompanying drawing and embodiment; Further illustrate the present invention; Should understand following embodiment only be used to the present invention is described and be not used in the restriction scope of the present invention; After having read the present invention, those skilled in the art all fall within the application's accompanying claims institute restricted portion to the modification of the various equivalent form of values of the present invention.
Extremely shown in Figure 3 like Fig. 1; The invention discloses a kind of lifting jack test unit; Comprise lifting jack performance test apparatus and lifting jack performance test operator's console; Described lifting jack performance test apparatus comprises top board 21, base plate 27 and bolt bracing frame 26; Described lifting jack test unit also comprises portable beam 22, following portable beam 25, pressure transducer 33 and displacement transducer 15, and described upward portable beam 22 and following portable beam 25 are installed between the top board 21 and base plate 27 of lifting jack test unit, are flexible connection between last portable beam 22 and following portable beam 25 and the bolt bracing frame 26; Described displacement transducer 15 is arranged on the base plate 27, and described pressure transducer 33 is installed on the top board 21.
Be respectively equipped with lifting jack locating slot 11 or lifting jack positioning convex ring 13 above described upward portable beam 22 and the following portable beam 25.
Described pressure transducer 33 is installed on the portable beam 22.
Described top board 21 or base plate 27 are provided with handle 31 or leg 37.
Described lifting jack performance test operator's console comprises shock-proof pressure gauge, power value sensor digital display instrument, displacement transducer digital display instrument, proportional pressure control valve adjusting button, hydraulic system start button, hydraulic system stop button, solenoid directional control valve, unloader, hydraulic jack 24 tubing interfaces, shock-proof pressure gauge pressure measurement hose connection, power value sensing data line interface, displacement transducer data line interface, electric cabinet external power interface.
Adopt this device to test
One, the lifting jack 23 to be measured of packing into is removed 6 set nuts, takes out top board 21, removes the adjustment nut; Portable beam 22 in the taking-up, pack lifting jack 23 to be measured into to lifting jack locating slot 11, pack into and go up portable beam 22; The adjustment nut of packing into, the top board of packing into, and fastening with set nut.
Two, adjustment stroke
Confirm the distance between the top board and base plate in this device according to the total kilometres of lifting jack; Distance between generalized case lower roof plate and the base plate should be more than or equal to the thickness sum of height of contour, top board and the up and down beam of the stroke of the height of contour of the stroke of the length of sensor, lifting jack, lifting jack, hydraulic jack 24, hydraulic jack 24; Adjustment adjustment nut keeps the consistance of distance between top board and the base plate; 6 set nuts; And fastening, even can be accidents caused in order to avoid because the inclination between top board and the base plate causes the stressed skew of lifting jack, measurement data is inaccurate;
1: static test: with the bolt lifting jack is example, presses the rising button, and hydraulic jack 24 pistons stretch out; Withstand lifting jack 23 to be measured, during test, lifting jack must be placed smooth; To support tooth and be pushed into lifting position, and, jacking sleeve risen earlier with the direct rotating ratchet group of hand; Until taking over a business, insert then and the pressing handle with till weight contacts.2/3 position that lifting jack 23 piston rods to be measured should rise to the lifting height gets final product, and (when redness warning line occurring, expression has worked the operational height that rises to this lifting jack; Should stop the pressing handle immediately, stop to hoist, otherwise possibly cause danger; Descend like need; Extract handle earlier, will support tooth and push opposite direction to and be pushed into " decline " position, the i.e. decline gradually of jacking sleeve of inserting handle again and pulling lifting jack).Rotary knob, proportional pressure control valve are adjusted to different pressure ratings from low to high, and each pressure rating dwell time is no less than 30s; Whether the digital display value and the corresponding relation between the shock-proof pressure gauge value of paired observation power value sensor be correct, because the bolt lifting jack has self-locking property, the digital display of displacement transducer should be unable to surpass 5% in whole test process; Progressively become big and surpass setting explanation bolt lifting jack self-locking property defective if change, have potential safety hazard, should ban use of.
With hydraulic jack 24 is example, presses the rising button, and hydraulic jack 24 pistons stretch out; Withstand lifting jack 23 to be measured, give lifting jack 23 pumps oil to be measured with external manual pump, lifting jack 23 piston rods to be measured stop pump oil in the time of should rising to 2/3 position of lifting height; Rotary knob; Proportional pressure control valve is adjusted to different pressure ratings from low to high, and each pressure rating dwell time is no less than 30s, and whether the digital display value and the corresponding relation between the shock-proof pressure gauge value of paired observation power value sensor be correct; Because tested lifting jack and exert pressure and have equilibrium of forces between the lifting jack; Therefore lifting jack 23 to be measured is when different pressure ratings, and piston rod can move down a distance, but can remain unchanged at packing stage.Be in shifting state under the piston rod as lifting jack to be measured 23 is consistent, explain that the sealing of lifting jack 23 to be measured will damage, should ban use of.
2: dynamic test: the position that should adjust lifting jack 23 to be measured before the test; Make the bolt lifting jack press the swing fulcrum of hand and the swing fulcrum of testing machine swing arm is in same straight line as far as possible; Rotary knob; Given proper working load is generally got 80% of former demarcation load, and lifting jack can not the jacking trial load, shows the lifting jack performance failure.After the proper working load stand the test, rotary knob, the operating load that given lifting jack is maximum, lifting jack 23 to be measured is implemented the jackings action, as can not the jacking test load, explains that this lifting jack maximum load performance test is defective.Should indicate prudent the use.
3 continuous working tests:, can be lubricated in lifting jack rotatable parts junction before the test at the verification method of different loads bottom offset and time.When lifting jack under certain load, piston stretches out or do not have when withdrawing creeps, and when reality is used; Some lifting jack are owing to be sealed with leakage; Draw high spring failure, leading screw has the rubbish jam, and the magnitude of interference more usually creeping phenomenon can take place between the mating parts; This phenomenon is obvious especially when particularly repairing lifting jack and adopting many lifting jack to scrabble up a lifting jack, also more need carry out this tentative module.
The lifting jack pressurize lock test displacement time diagram to be measured that the displacement-time diagram that obtains is as shown in Figure 3; It is qualified to be regarded as; Displacement-time ideal curve figure for the test of lifting jack continuous performance shown in Figure 4, the stage shown in Figure 5 displacement time curve figure that creeps then is regarded as defective.
4: long duration test: with hydraulic jack 24 is example, presses the rising button, and hydraulic jack 24 pistons stretch out; Withstand lifting jack 23 to be measured, give lifting jack 23 pumps oil to be measured with external manual pump, lifting jack 23 piston rods to be measured should rise to 2/3 of lifting height and stop pump oil during with interior optional position; Rotary knob, proportional pressure control valve are adjusted to maximum pressure rating, the digital display value of paired observation power value sensor and the corresponding relation between the shock-proof pressure gauge value from low to high; After the state of lifting jack 23 to be measured is fixed, the high-pressure ball valve of closing external manual pump oil pipe front, the high-pressure ball valve of closing test jack hydraulic pumping plant front; This moment, system was at packing stage; The digital display value of power value sensor and pressure tabular value, and the digital display value of displacement transducer all is a fixed value, record data; After 6 hours, observe above data once more and whether can remain unchanged.As lifting jack 23 piston rod displacements to be measured change the explanation lifting jack 23 to be measured have internal leakage, should ban use of.
5: the inclination load test is an example with hydraulic jack 24; Place self-control to become with surface level on the inclined table of 60 degree lifting jack 23 bases to be measured; The top board of piston directly withstands on down on the plane of portable beam, and rotary knob, proportional pressure control valve are adjusted to from low to high and should be able to be born rated load weight; Give lifting jack 23 pumps oil to be measured with external manual pump, can not bear this rated load weight like lifting jack 23 to be measured; Or adjustment screw rod, piston rod bending cause and can not reset.Tilt when stressed oil cylinder and the slit leakage of oil appears in base, adjustment screw rod external diameter is too little or the piston rod endoporus should ban use of too greatly of this lifting jack is described.
Five, off-test
After off-test, the valve of hydraulic jack 24 is opened, to hydraulic jack 24 discharge degree, again lifting jack 23 to be measured is shifted out test unit, the piston of lifting jack is return original position, experiment finishes.
The above only is a preferred implementation of the present invention, should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention, can make and improve and replenish, these improvement and replenish and also should be regarded as protection scope of the present invention.
Lifting jack test unit disclosed by the invention is through fixing benchmark test lifting jack; Simplified the detection difficulty of lifting jack to be detected; Also effective contrast benchmark is provided simultaneously for same batch of detection with the lifting jack of type; Simultaneously because lifting jack test unit disclosed by the invention is maximum top act state with lifting jack serves as the test original state, guaranteed that effectively lifting jack to be measured lifts the self-locking pressurize stress performance in the upper range on the maximum top.
Claims (4)
1. lifting jack test unit; Comprise lifting jack performance test apparatus and lifting jack performance test operator's console; Described lifting jack performance test apparatus comprises top board (21), base plate (27) and bolt bracing frame (26); It is characterized in that: described lifting jack test unit also comprises portable beam (22), following portable beam (25), pressure transducer (33) and displacement transducer (15); Described upward portable beam (22) and following portable beam (25) are installed between the top board (21) and base plate (27) of lifting jack test unit; Be flexible connection between last portable beam (22) and following portable beam (25) and the bolt bracing frame (26), described displacement transducer (15) is arranged on (27) on the base plate, and described pressure transducer (33) is installed on the top board (21).
2. lifting jack test unit according to claim 1 is characterized in that: be respectively equipped with lifting jack locating slot (11) or lifting jack positioning convex ring (13) above described upward portable beam (22) and the following portable beam (25).
3. lifting jack test unit according to claim 1 is characterized in that: described pressure transducer (33) is installed on the portable beam (22).
4. lifting jack test unit according to claim 1 is characterized in that: described top board (21) or base plate (27) are provided with handle (31) or leg (37).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101629680A CN102829986A (en) | 2011-06-17 | 2011-06-17 | Jack detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101629680A CN102829986A (en) | 2011-06-17 | 2011-06-17 | Jack detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102829986A true CN102829986A (en) | 2012-12-19 |
Family
ID=47333199
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011101629680A Pending CN102829986A (en) | 2011-06-17 | 2011-06-17 | Jack detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102829986A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105319081A (en) * | 2015-04-27 | 2016-02-10 | 洛阳辰祥机械科技有限公司 | Detection device of jack |
| CN105424347A (en) * | 2015-12-11 | 2016-03-23 | 重庆长安空港汽车配件有限责任公司 | Jack pressure detection equipment |
| CN106248413A (en) * | 2016-08-04 | 2016-12-21 | 南通市通润汽车零部件有限公司 | A kind of detection equipment of scissor-like jack |
| CN106969927A (en) * | 2017-03-10 | 2017-07-21 | 浙江华电器材检测研究所 | jack dynamic test system |
| CN107036798A (en) * | 2017-05-31 | 2017-08-11 | 大连船舶重工集团有限公司 | A kind of method for the main tension compensator floor loading experiment of drilling well |
| CN107433440A (en) * | 2016-05-27 | 2017-12-05 | 上海梅山科技发展有限公司 | Oil cylinder integral demounting and erecting device |
| CN109611415A (en) * | 2019-01-31 | 2019-04-12 | 广船国际有限公司 | A kind of method and test platform device for moving the test of ship trolley |
| CN109682628A (en) * | 2019-01-04 | 2019-04-26 | 武汉船用机械有限责任公司 | The experimental rig of raise-lower hydraulic machine |
| CN110779753A (en) * | 2019-12-12 | 2020-02-11 | 安徽青松工具有限公司 | Vehicle-mounted jack test equipment |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2852095Y (en) * | 2005-10-31 | 2006-12-27 | 李良 | Jack dynamic load tester |
| CN201000399Y (en) * | 2007-01-07 | 2008-01-02 | 温州市华特电气有限公司 | Device for testing performance of jack |
| CN101476992A (en) * | 2009-02-09 | 2009-07-08 | 浙江电力职业技术学院 | Load dynamic pretest system for hoisting jack |
| CN101988865A (en) * | 2009-07-31 | 2011-03-23 | 中国建筑第八工程局有限公司 | Hydraulic jack self-calibrating system and self-calibrating method |
-
2011
- 2011-06-17 CN CN2011101629680A patent/CN102829986A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2852095Y (en) * | 2005-10-31 | 2006-12-27 | 李良 | Jack dynamic load tester |
| CN201000399Y (en) * | 2007-01-07 | 2008-01-02 | 温州市华特电气有限公司 | Device for testing performance of jack |
| CN101476992A (en) * | 2009-02-09 | 2009-07-08 | 浙江电力职业技术学院 | Load dynamic pretest system for hoisting jack |
| CN101988865A (en) * | 2009-07-31 | 2011-03-23 | 中国建筑第八工程局有限公司 | Hydraulic jack self-calibrating system and self-calibrating method |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105319081A (en) * | 2015-04-27 | 2016-02-10 | 洛阳辰祥机械科技有限公司 | Detection device of jack |
| CN105424347A (en) * | 2015-12-11 | 2016-03-23 | 重庆长安空港汽车配件有限责任公司 | Jack pressure detection equipment |
| CN107433440A (en) * | 2016-05-27 | 2017-12-05 | 上海梅山科技发展有限公司 | Oil cylinder integral demounting and erecting device |
| CN107433440B (en) * | 2016-05-27 | 2019-05-24 | 上海梅山科技发展有限公司 | Oil cylinder integral demounting and mounting device |
| CN106248413A (en) * | 2016-08-04 | 2016-12-21 | 南通市通润汽车零部件有限公司 | A kind of detection equipment of scissor-like jack |
| CN106969927A (en) * | 2017-03-10 | 2017-07-21 | 浙江华电器材检测研究所 | jack dynamic test system |
| CN106969927B (en) * | 2017-03-10 | 2024-03-15 | 浙江华电器材检测研究院有限公司 | Jack dynamic test system |
| CN107036798A (en) * | 2017-05-31 | 2017-08-11 | 大连船舶重工集团有限公司 | A kind of method for the main tension compensator floor loading experiment of drilling well |
| CN109682628A (en) * | 2019-01-04 | 2019-04-26 | 武汉船用机械有限责任公司 | The experimental rig of raise-lower hydraulic machine |
| CN109611415A (en) * | 2019-01-31 | 2019-04-12 | 广船国际有限公司 | A kind of method and test platform device for moving the test of ship trolley |
| CN109611415B (en) * | 2019-01-31 | 2020-10-09 | 广船国际有限公司 | Test method and test platform device for ship moving trolley |
| CN110779753A (en) * | 2019-12-12 | 2020-02-11 | 安徽青松工具有限公司 | Vehicle-mounted jack test equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102829986A (en) | Jack detection device | |
| CN104359662A (en) | Cylindrical compression spring parameter testing method | |
| CN206339329U (en) | Volume range force sensor calibrating installation | |
| CN109030219B (en) | Detection method of carton strength detection device | |
| CN103645009A (en) | Torque wrench calibrator | |
| CN209355838U (en) | A kind of detection device for bearing end-play | |
| CN102103065A (en) | Device for calibrating extraction instrument | |
| CN203479555U (en) | Pressure testing device for jack | |
| CN108663274A (en) | The very heavy very useful three axis the static and dynamic experiment machine of one kind and test method | |
| CN101476992A (en) | Load dynamic pretest system for hoisting jack | |
| CN201464204U (en) | Dynamic jack load pretesting system | |
| CN106644329B (en) | 120MN bridge support testing machine for high-precision dynamic measurement | |
| CN201173099Y (en) | Oil pumping machine unloading and calibration device | |
| CN209043544U (en) | A kind of KOCKS nitrogen gas spring on-line measuring device | |
| CN207730576U (en) | Build concrete crush test machine | |
| CN201778345U (en) | Testing machine for spud leg locking system of self-elevating drilling platform | |
| KR100791306B1 (en) | Bi-directional Single-acting hydraulic cylinder Pile Load Test | |
| CN101762380B (en) | Method for testing vertical ultimate stable bearing capacity of scaffold | |
| JP2018077179A (en) | Method for rubber compression test | |
| KR20140143250A (en) | Load test apparatus for overhead lug and load test apparatus of overhead lug using it | |
| CN203479626U (en) | Pressure test device of jack | |
| CN107179189B (en) | Large-scale load test device | |
| CN111189657B (en) | Method for correcting hydraulic jack by using axial compression steel pipe | |
| CN105133668A (en) | Load box | |
| CN205642746U (en) | Part water pressure testing device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20121219 |