CN110606443A - Hydraulic jack with weight display - Google Patents
Hydraulic jack with weight display Download PDFInfo
- Publication number
- CN110606443A CN110606443A CN201910530213.8A CN201910530213A CN110606443A CN 110606443 A CN110606443 A CN 110606443A CN 201910530213 A CN201910530213 A CN 201910530213A CN 110606443 A CN110606443 A CN 110606443A
- Authority
- CN
- China
- Prior art keywords
- elastic body
- resistance
- column type
- weight
- hydraulic jack
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
- B66F3/24—Devices, e.g. jacks, adapted for uninterrupted lifting of loads fluid-pressure operated
- B66F3/25—Constructional features
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/20—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress
- G01L1/22—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress using resistance strain gauges
- G01L1/225—Measuring circuits therefor
- G01L1/2262—Measuring circuits therefor involving simple electrical bridges
Abstract
The invention discloses a hydraulic jack with a weight display function, belongs to the field of hoisting equipment, and comprises a top head and a hydraulic device. The inner part of the top is processed into a column type elastic body structure, then a resistance type strain gauge is pasted on the column type elastic body structure to form a Wheatstone bridge structure, when the hydraulic device pushes the top to lift a weight load, the column type elastic body in the top is slightly deformed, the resistance value of the resistance type strain gauge is changed to cause the output change of the Wheatstone bridge, the resistance value is converted into a weight load value to be displayed on a display instrument after signal processing, in fact, the top of the jack is changed into a weight sensor, and meanwhile, the functions of the top and the weight sensor are achieved. When lifting the object, need not additionally place weighing transducer, convenience simple to use, the top with by the lifting between the object be direct contact, measure more accurately, the condition that additional sensor topples or collapses out can not appear moreover, improved the security of measuring.
Description
Technical Field
The invention belongs to the field of hoisting equipment, and particularly relates to a hydraulic jack with a weight display function.
Background
The hydraulic jack is a lifting and lifting device with wide application, when the hydraulic jack lifts an object, the top head is positioned below the lifted object, and then the object is pushed upwards by pressurization. Because the load of the jack can not be displayed in real time in the lifting process, whether the lifted object moves upwards can be judged only by naked eyes, and then the pressurizing process is controlled, so that the lifting jack is inconvenient and has potential safety hazards.
At present, if the load of jack is to be measured, need additionally install weight sensor between the top of jack and the object of being lifted, because sensor and top and the object of being lifted are all not zonulae occludens, and the error of measurement is bigger, moreover when load is bigger, the condition that the sensor topples even collapses out still probably appears, consequently need provide a neotype hydraulic jack that takes weight to show and solve above-mentioned problem urgently.
Disclosure of Invention
The invention aims to provide a hydraulic jack with a weight display function, wherein a weight load can be directly loaded on the jack, a weight sensor does not need to be additionally arranged, and the current weight load can be directly displayed in real time through a display instrument when the jack lifts the load.
In order to achieve the purpose, the invention adopts the following technical scheme: a hydraulic jack with weight display comprises a jack head and a hydraulic device. The inner part of the top is processed into a column type elastic body structure, then a resistance type strain gauge is pasted on the column type elastic body structure to form a Wheatstone bridge structure, when the hydraulic device pushes the top to lift a weight load, the column type elastic body in the top is slightly deformed, the resistance value of the resistance type strain gauge is changed to cause the output change of the Wheatstone bridge, the resistance value is converted into a weight load value to be displayed on a display instrument after signal processing, in fact, the top of the jack is changed into a weight sensor, and meanwhile, the functions of the top and the weight sensor are achieved.
The invention has the beneficial effects that: the top plays weighing transducer's effect simultaneously, when lifting the object, does not need additionally to place weighing transducer, and convenience simple to use, the top with by lift between the object be direct contact, measure more accurately, the condition that additional sensor topples or collapses out can not appear moreover, improved the measuring security.
Drawings
FIG. 1 is an internal structural view of a head of a hydraulic jack with weight indication;
FIG. 2 is a circuit diagram of a Wheatstone bridge formed by resistive strain gauges in the tip;
fig. 3 is a working principle diagram of the hydraulic jack with weight display.
Detailed Description
The invention is further described with reference to the accompanying drawings 1-3:
the hydraulic jack with the weight display function is characterized in that the inner structure of the top head of the hydraulic jack is shown in figure 1 and comprises a column type elastic body 1, a resistance type strain gauge 2, a resistance type strain gauge 3 and a protective shell 4, wherein the column type elastic body 1 is of a quadrangular prism structure, the resistance type strain gauge 2 and the resistance type strain gauge 3 are pasted on one surface of the column type elastic body, 2 pieces of resistance type strain gauges and 4 pieces of resistance type strain gauges are symmetrically pasted on the opposite surface of the column type elastic body. When the upper contact surface 5 of the plug is pressed, the column type elastic body 1 deforms slightly, so that the 4 resistance type strain gauges deform and the resistance value changes. The protective shell 4 is arranged on the periphery of the column type elastic body 1 and plays a role in protecting the elastic body, the resistance type strain gauge and the lead.
Fig. 2 shows a wheatstone bridge circuit composed of resistance strain gauges in the top, 4 resistance strain gauges R1, R2, R3 and R4 respectively form 4 arms of the wheatstone bridge, an excitation voltage Vin is applied between R1 and R3 and between R2 and R4, when the column type elastic body 1 is stressed and deformed, the resistance values of the 4 resistance strain gauges change, the output voltages Vout between R1 and R2 and between R3 and R4 change correspondingly, and the weight load on the top of the jack can be converted through signal processing according to the change of Vout.
In a preferred embodiment of the present invention, the hydraulic jack with weight display works according to the principle shown in fig. 3, the load 9 is in close contact with the top 6, the hydraulic device 7 provides pressure to push the top to move upwards, the pressure causes the output signal of the column sensor 10 in the top 6 to change, the output signal is transmitted to the display instrument 11 through the connection socket 12 and the cable 13, and the display instrument 11 can display the weight load of the hydraulic jack in real time.
In summary, the hydraulic jack with weight display provided by the invention can be provided, the column type elastic body is processed inside the top head, the hydraulic jack can play a role of a weight sensor, when an object is lifted, the weight sensor does not need to be additionally arranged, the hydraulic jack is simple and convenient to use, the top head is in direct contact with the lifted object, the measurement is more accurate, the situation that the additional sensor topples or collapses out does not occur, and the measurement safety is improved.
Claims (2)
1. The utility model provides a take hydraulic jack of weight demonstration, includes column type elastomer (1), resistance type strainometer (2), resistance type strainometer (3), protecting sheathing (4), column type elastomer 1 is the quadrangular prism structure, pastes resistance type strainometer (2) and resistance type strainometer (3) on its one side, and what the opposite of this face still symmetry pasted has 2 resistance type strainometers, totally 4. When the upper contact surface (5) of the plug is pressed, the column type elastic body (1) can deform slightly, so that the 4 resistance type strain gauges deform and the resistance value changes. The protective shell (4) is arranged on the periphery of the column type elastic body (1) and plays a role in protecting the elastic body, the resistance type strain gauge and the lead.
2. The hydraulic jack of claim 1, wherein: the load (9) is in close contact with the top head (6), the hydraulic device (7) provides pressure for pushing the top head to move upwards, the pressure causes output signals of the column type sensor (10) in the top head (6) to change, the output signals are transmitted to the display instrument (11) through the wiring socket (12) and the cable (13), and the display instrument (11) can display the weight load of the hydraulic jack in real time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910530213.8A CN110606443A (en) | 2019-06-11 | 2019-06-11 | Hydraulic jack with weight display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910530213.8A CN110606443A (en) | 2019-06-11 | 2019-06-11 | Hydraulic jack with weight display |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110606443A true CN110606443A (en) | 2019-12-24 |
Family
ID=68890106
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910530213.8A Pending CN110606443A (en) | 2019-06-11 | 2019-06-11 | Hydraulic jack with weight display |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110606443A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111675129A (en) * | 2020-05-29 | 2020-09-18 | 山东建筑大学 | Electric screw following jack and control method thereof |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4039084A (en) * | 1971-07-06 | 1977-08-02 | Tadano Ironworks Co., Ltd. | Safety-guard for a crane |
| SU449648A1 (en) * | 1973-02-28 | 1980-11-07 | Специальное Конструкторское Бюро Научно-Производственного Объединения "Геотехника" | Drill sound of multichannel telemeasuring instrument |
| CN2120107U (en) * | 1992-04-05 | 1992-10-28 | 中国矿业大学 | Digital display jack |
| CN2334025Y (en) * | 1998-04-12 | 1999-08-18 | 中外合资柳州欧维姆建筑机械有限公司 | Jack overload running performance detecting device |
| WO1999056003A1 (en) * | 1998-04-30 | 1999-11-04 | The Government Of The United States Of America, Represented By The Secretary Of The Department Of Health And Human Services | Method and apparatus for load rate monitoring |
| CN2449220Y (en) * | 2000-11-06 | 2001-09-19 | 余姚传感器厂有限责任公司 | Circular pressing type swing column sensor |
| US20060266791A1 (en) * | 2005-03-25 | 2006-11-30 | Walter Koch | Work-table |
| CN201165457Y (en) * | 2007-11-23 | 2008-12-17 | 杨绍荃 | Jack for measuring force and displacement |
| CN102818663A (en) * | 2012-08-31 | 2012-12-12 | 苏州托克斯冲压设备有限公司 | Indirect pressure measuring device of electronic pressure machine |
| CN102941464A (en) * | 2012-11-12 | 2013-02-27 | 宁波华美达机械制造有限公司 | Automatic press-in equipment for interference steel jacket on rotating junction on injection molding machine |
| CN207498924U (en) * | 2017-05-05 | 2018-06-15 | 郑州天时海洋石油装备有限公司 | A kind of self-lifting type marine drilling platform locking device of detectable load |
| CN108313919A (en) * | 2018-03-29 | 2018-07-24 | 湖北赞博信息科技股份有限公司 | A kind of Ultralow thin type hydraulic jack |
-
2019
- 2019-06-11 CN CN201910530213.8A patent/CN110606443A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4039084A (en) * | 1971-07-06 | 1977-08-02 | Tadano Ironworks Co., Ltd. | Safety-guard for a crane |
| SU449648A1 (en) * | 1973-02-28 | 1980-11-07 | Специальное Конструкторское Бюро Научно-Производственного Объединения "Геотехника" | Drill sound of multichannel telemeasuring instrument |
| CN2120107U (en) * | 1992-04-05 | 1992-10-28 | 中国矿业大学 | Digital display jack |
| CN2334025Y (en) * | 1998-04-12 | 1999-08-18 | 中外合资柳州欧维姆建筑机械有限公司 | Jack overload running performance detecting device |
| WO1999056003A1 (en) * | 1998-04-30 | 1999-11-04 | The Government Of The United States Of America, Represented By The Secretary Of The Department Of Health And Human Services | Method and apparatus for load rate monitoring |
| CN2449220Y (en) * | 2000-11-06 | 2001-09-19 | 余姚传感器厂有限责任公司 | Circular pressing type swing column sensor |
| US20060266791A1 (en) * | 2005-03-25 | 2006-11-30 | Walter Koch | Work-table |
| CN201165457Y (en) * | 2007-11-23 | 2008-12-17 | 杨绍荃 | Jack for measuring force and displacement |
| CN102818663A (en) * | 2012-08-31 | 2012-12-12 | 苏州托克斯冲压设备有限公司 | Indirect pressure measuring device of electronic pressure machine |
| CN102941464A (en) * | 2012-11-12 | 2013-02-27 | 宁波华美达机械制造有限公司 | Automatic press-in equipment for interference steel jacket on rotating junction on injection molding machine |
| CN207498924U (en) * | 2017-05-05 | 2018-06-15 | 郑州天时海洋石油装备有限公司 | A kind of self-lifting type marine drilling platform locking device of detectable load |
| CN108313919A (en) * | 2018-03-29 | 2018-07-24 | 湖北赞博信息科技股份有限公司 | A kind of Ultralow thin type hydraulic jack |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111675129A (en) * | 2020-05-29 | 2020-09-18 | 山东建筑大学 | Electric screw following jack and control method thereof |
| CN111675129B (en) * | 2020-05-29 | 2021-08-10 | 山东建筑大学 | Electric screw following jack and control method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201615812U (en) | Contact pressure detection device of load switch contact | |
| CN108051054A (en) | It is a kind of in hospital can intelligent measure height and weight measuring instrument | |
| CN110606443A (en) | Hydraulic jack with weight display | |
| CN201389017Y (en) | Strain-type medical fetal heart pressure sensor | |
| CN205384108U (en) | Measure axial tension's resistance strain force sensor | |
| CN210603570U (en) | Be applied to and detect foil gage pressure sensor broken string circuit | |
| CN203069580U (en) | Mechanical calibration device for output load of lever type consolidometer | |
| CN113790974A (en) | Soil body horizontal stress testing method and system based on flexible consolidation pressure chamber | |
| CN202083500U (en) | Resistance type double-flange torque sensor | |
| KR20120123171A (en) | Load cell unit | |
| CN102116697A (en) | Center-of-gravity measurement module and action induction module | |
| CN204924517U (en) | Portable electronic dynamometer | |
| CN203163840U (en) | High precision column type weighing sensor | |
| CN209764562U (en) | Test system for detecting pre-tightening force of blind rivet | |
| CN201637384U (en) | Transducer for measuring small displacement | |
| CN211904497U (en) | Sensor circuit and sensor for measuring pressure-torsion composite force | |
| CN101726346A (en) | Wheel load measuring instrument with strain gauges | |
| CN201520617U (en) | Hydraulic jack capable of displaying load and realizing overload warning | |
| CN202614439U (en) | Dynamometer special for digital elevator inspection | |
| CN210037072U (en) | Detection apparatus for push-pull effort meter | |
| CN207263289U (en) | A kind of calibrating installation for human body platform scale | |
| CN217845958U (en) | Tensile calibrating installation of compression-shear testing machine | |
| CN220819269U (en) | Single-shaft miniature pressing force transducer | |
| CN203587252U (en) | Plate-type stretching force cell enabling precise measurement | |
| CN220084565U (en) | Electric cylinder test platform |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20191224 |
|
| WD01 | Invention patent application deemed withdrawn after publication |